From ec52e58404a2cab045d132c095388bddd6676e28 Mon Sep 17 00:00:00 2001 From: acdlite Date: Fri, 19 Apr 2024 18:28:23 +0000 Subject: [PATCH] Run Closure on non-minified prod builds, too (#28827) In #26446 we started publishing non-minified versions of our production build artifacts, along with source maps, for easier debugging of React when running in production mode. The way it's currently set up is that these builds are generated *before* Closure compiler has run. Which means it's missing many of the optimizations that are in the final build, like dead code elimination. This PR changes the build process to run Closure on the non-minified production builds, too, by moving the sourcemap generation to later in the pipeline. The non-minified builds will still preserve the original symbol names, and we'll use Prettier to add back whitespace. This is the exact same approach we've been using for years to generate production builds for Meta. The idea is that the only difference between the minified and non- minified builds is whitespace and symbol mangling. The semantic structure of the program should be identical. To implement this, I disabled symbol mangling when running Closure compiler. Then, in a later step, the symbols are mangled by Terser. This is when the source maps are generated. DiffTrain build for commit https://github.com/facebook/react/commit/0e0b69321a6fcfe8a3eaae3b1016beb110437b38. --- .../vendor/react-is/cjs/ReactIs-dev.js | 395 +- .../cjs/ReactTestRenderer-dev.js | 43843 ++++++-------- .../vendor/react/cjs/JSXDEVRuntime-dev.js | 2685 +- .../vendor/react/cjs/JSXRuntime-dev.js | 2749 +- .../RKJSModules/vendor/react/cjs/React-dev.js | 6347 +- .../vendor/scheduler/cjs/Scheduler-dev.js | 1056 +- .../vendor/scheduler/cjs/SchedulerMock-dev.js | 1200 +- .../Libraries/Renderer/REVISION | 2 +- .../implementations/ReactFabric-dev.fb.js | 49811 +++++++-------- .../ReactNativeRenderer-dev.fb.js | 50403 +++++++--------- 10 files changed, 72396 insertions(+), 86095 deletions(-) diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-is/cjs/ReactIs-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-is/cjs/ReactIs-dev.js index 8ab25aaee0d27..fa2bc4db06197 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-is/cjs/ReactIs-dev.js +++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-is/cjs/ReactIs-dev.js @@ -7,232 +7,207 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<> + * @generated SignedSource<<4b798dcd431887c30b264d36a3b13441>> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; - - var dynamicFlagsUntyped = require("ReactNativeInternalFeatureFlags"); - - // ATTENTION - // When adding new symbols to this file, - // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' - // The Symbol used to tag the ReactElement-like types. - var REACT_ELEMENT_TYPE = Symbol.for("react.element"); - var REACT_PORTAL_TYPE = Symbol.for("react.portal"); - var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); - var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); - var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); - var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); // TODO: Delete with enableRenderableContext - - var REACT_CONSUMER_TYPE = Symbol.for("react.consumer"); - var REACT_CONTEXT_TYPE = Symbol.for("react.context"); - var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); - var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); - var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); - var REACT_MEMO_TYPE = Symbol.for("react.memo"); - var REACT_LAZY_TYPE = Symbol.for("react.lazy"); - var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); - - // Re-export dynamic flags from the internal module. - var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on - // the exports object every time a flag is read. - - var enableRenderableContext = dynamicFlags.enableRenderableContext; - // The rest of the flags are static for better dead code elimination. - var enableDebugTracing = false; - var enableScopeAPI = false; - var enableLegacyHidden = false; - var enableTransitionTracing = false; - - var REACT_CLIENT_REFERENCE = Symbol.for("react.client.reference"); - function isValidElementType(type) { - if (typeof type === "string" || typeof type === "function") { - return true; - } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). - - if ( - type === REACT_FRAGMENT_TYPE || - type === REACT_PROFILER_TYPE || - enableDebugTracing || - type === REACT_STRICT_MODE_TYPE || - type === REACT_SUSPENSE_TYPE || - type === REACT_SUSPENSE_LIST_TYPE || - enableLegacyHidden || - type === REACT_OFFSCREEN_TYPE || - enableScopeAPI || - enableTransitionTracing - ) { - return true; - } - - if (typeof type === "object" && type !== null) { - if ( - type.$$typeof === REACT_LAZY_TYPE || - type.$$typeof === REACT_MEMO_TYPE || - type.$$typeof === REACT_CONTEXT_TYPE || - (!enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE) || - (enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE) || - type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object - // types supported by any Flight configuration anywhere since - // we don't know which Flight build this will end up being used - // with. - type.$$typeof === REACT_CLIENT_REFERENCE || - type.getModuleId !== undefined - ) { - return true; - } - } - - return false; + (function() { +'use strict'; + +var dynamicFlagsUntyped = require('ReactNativeInternalFeatureFlags'); + +// ATTENTION +// When adding new symbols to this file, +// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' +// The Symbol used to tag the ReactElement-like types. +var REACT_ELEMENT_TYPE = Symbol.for('react.element'); +var REACT_PORTAL_TYPE = Symbol.for('react.portal'); +var REACT_FRAGMENT_TYPE = Symbol.for('react.fragment'); +var REACT_STRICT_MODE_TYPE = Symbol.for('react.strict_mode'); +var REACT_PROFILER_TYPE = Symbol.for('react.profiler'); +var REACT_PROVIDER_TYPE = Symbol.for('react.provider'); // TODO: Delete with enableRenderableContext + +var REACT_CONSUMER_TYPE = Symbol.for('react.consumer'); +var REACT_CONTEXT_TYPE = Symbol.for('react.context'); +var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref'); +var REACT_SUSPENSE_TYPE = Symbol.for('react.suspense'); +var REACT_SUSPENSE_LIST_TYPE = Symbol.for('react.suspense_list'); +var REACT_MEMO_TYPE = Symbol.for('react.memo'); +var REACT_LAZY_TYPE = Symbol.for('react.lazy'); +var REACT_OFFSCREEN_TYPE = Symbol.for('react.offscreen'); + +// Re-export dynamic flags from the internal module. +var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on +// the exports object every time a flag is read. + +var enableRenderableContext = dynamicFlags.enableRenderableContext; + // The rest of the flags are static for better dead code elimination. +var enableDebugTracing = false; +var enableScopeAPI = false; +var enableLegacyHidden = false; +var enableTransitionTracing = false; + +var REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference'); +function isValidElementType(type) { + if (typeof type === 'string' || typeof type === 'function') { + return true; + } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). + + + if (type === REACT_FRAGMENT_TYPE || type === REACT_PROFILER_TYPE || enableDebugTracing || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || enableLegacyHidden || type === REACT_OFFSCREEN_TYPE || enableScopeAPI || enableTransitionTracing ) { + return true; + } + + if (typeof type === 'object' && type !== null) { + if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || !enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE || enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object + // types supported by any Flight configuration anywhere since + // we don't know which Flight build this will end up being used + // with. + type.$$typeof === REACT_CLIENT_REFERENCE || type.getModuleId !== undefined) { + return true; } + } - function typeOf(object) { - if (typeof object === "object" && object !== null) { - var $$typeof = object.$$typeof; - - switch ($$typeof) { - case REACT_ELEMENT_TYPE: - var type = object.type; - - switch (type) { - case REACT_FRAGMENT_TYPE: - case REACT_PROFILER_TYPE: - case REACT_STRICT_MODE_TYPE: - case REACT_SUSPENSE_TYPE: - case REACT_SUSPENSE_LIST_TYPE: - return type; - - default: - var $$typeofType = type && type.$$typeof; - - switch ($$typeofType) { - case REACT_CONTEXT_TYPE: - case REACT_FORWARD_REF_TYPE: - case REACT_LAZY_TYPE: - case REACT_MEMO_TYPE: - return $$typeofType; + return false; +} - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - return $$typeofType; - } +function typeOf(object) { + if (typeof object === 'object' && object !== null) { + var $$typeof = object.$$typeof; + + switch ($$typeof) { + case REACT_ELEMENT_TYPE: + var type = object.type; + + switch (type) { + case REACT_FRAGMENT_TYPE: + case REACT_PROFILER_TYPE: + case REACT_STRICT_MODE_TYPE: + case REACT_SUSPENSE_TYPE: + case REACT_SUSPENSE_LIST_TYPE: + return type; + + default: + var $$typeofType = type && type.$$typeof; + + switch ($$typeofType) { + case REACT_CONTEXT_TYPE: + case REACT_FORWARD_REF_TYPE: + case REACT_LAZY_TYPE: + case REACT_MEMO_TYPE: + return $$typeofType; + + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + return $$typeofType; + } - // Fall through + // Fall through - case REACT_PROVIDER_TYPE: - if (!enableRenderableContext) { - return $$typeofType; - } + case REACT_PROVIDER_TYPE: + if (!enableRenderableContext) { + return $$typeofType; + } - // Fall through + // Fall through - default: - return $$typeof; - } + default: + return $$typeof; } - case REACT_PORTAL_TYPE: - return $$typeof; } - } - return undefined; - } - var ContextConsumer = enableRenderableContext - ? REACT_CONSUMER_TYPE - : REACT_CONTEXT_TYPE; - var ContextProvider = enableRenderableContext - ? REACT_CONTEXT_TYPE - : REACT_PROVIDER_TYPE; - var Element = REACT_ELEMENT_TYPE; - var ForwardRef = REACT_FORWARD_REF_TYPE; - var Fragment = REACT_FRAGMENT_TYPE; - var Lazy = REACT_LAZY_TYPE; - var Memo = REACT_MEMO_TYPE; - var Portal = REACT_PORTAL_TYPE; - var Profiler = REACT_PROFILER_TYPE; - var StrictMode = REACT_STRICT_MODE_TYPE; - var Suspense = REACT_SUSPENSE_TYPE; - var SuspenseList = REACT_SUSPENSE_LIST_TYPE; - function isContextConsumer(object) { - if (enableRenderableContext) { - return typeOf(object) === REACT_CONSUMER_TYPE; - } else { - return typeOf(object) === REACT_CONTEXT_TYPE; - } - } - function isContextProvider(object) { - if (enableRenderableContext) { - return typeOf(object) === REACT_CONTEXT_TYPE; - } else { - return typeOf(object) === REACT_PROVIDER_TYPE; - } - } - function isElement(object) { - return ( - typeof object === "object" && - object !== null && - object.$$typeof === REACT_ELEMENT_TYPE - ); - } - function isForwardRef(object) { - return typeOf(object) === REACT_FORWARD_REF_TYPE; - } - function isFragment(object) { - return typeOf(object) === REACT_FRAGMENT_TYPE; - } - function isLazy(object) { - return typeOf(object) === REACT_LAZY_TYPE; - } - function isMemo(object) { - return typeOf(object) === REACT_MEMO_TYPE; - } - function isPortal(object) { - return typeOf(object) === REACT_PORTAL_TYPE; - } - function isProfiler(object) { - return typeOf(object) === REACT_PROFILER_TYPE; - } - function isStrictMode(object) { - return typeOf(object) === REACT_STRICT_MODE_TYPE; - } - function isSuspense(object) { - return typeOf(object) === REACT_SUSPENSE_TYPE; - } - function isSuspenseList(object) { - return typeOf(object) === REACT_SUSPENSE_LIST_TYPE; + case REACT_PORTAL_TYPE: + return $$typeof; } + } + + return undefined; +} +var ContextConsumer = enableRenderableContext ? REACT_CONSUMER_TYPE : REACT_CONTEXT_TYPE; +var ContextProvider = enableRenderableContext ? REACT_CONTEXT_TYPE : REACT_PROVIDER_TYPE; +var Element = REACT_ELEMENT_TYPE; +var ForwardRef = REACT_FORWARD_REF_TYPE; +var Fragment = REACT_FRAGMENT_TYPE; +var Lazy = REACT_LAZY_TYPE; +var Memo = REACT_MEMO_TYPE; +var Portal = REACT_PORTAL_TYPE; +var Profiler = REACT_PROFILER_TYPE; +var StrictMode = REACT_STRICT_MODE_TYPE; +var Suspense = REACT_SUSPENSE_TYPE; +var SuspenseList = REACT_SUSPENSE_LIST_TYPE; +function isContextConsumer(object) { + if (enableRenderableContext) { + return typeOf(object) === REACT_CONSUMER_TYPE; + } else { + return typeOf(object) === REACT_CONTEXT_TYPE; + } +} +function isContextProvider(object) { + if (enableRenderableContext) { + return typeOf(object) === REACT_CONTEXT_TYPE; + } else { + return typeOf(object) === REACT_PROVIDER_TYPE; + } +} +function isElement(object) { + return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE; +} +function isForwardRef(object) { + return typeOf(object) === REACT_FORWARD_REF_TYPE; +} +function isFragment(object) { + return typeOf(object) === REACT_FRAGMENT_TYPE; +} +function isLazy(object) { + return typeOf(object) === REACT_LAZY_TYPE; +} +function isMemo(object) { + return typeOf(object) === REACT_MEMO_TYPE; +} +function isPortal(object) { + return typeOf(object) === REACT_PORTAL_TYPE; +} +function isProfiler(object) { + return typeOf(object) === REACT_PROFILER_TYPE; +} +function isStrictMode(object) { + return typeOf(object) === REACT_STRICT_MODE_TYPE; +} +function isSuspense(object) { + return typeOf(object) === REACT_SUSPENSE_TYPE; +} +function isSuspenseList(object) { + return typeOf(object) === REACT_SUSPENSE_LIST_TYPE; +} - exports.ContextConsumer = ContextConsumer; - exports.ContextProvider = ContextProvider; - exports.Element = Element; - exports.ForwardRef = ForwardRef; - exports.Fragment = Fragment; - exports.Lazy = Lazy; - exports.Memo = Memo; - exports.Portal = Portal; - exports.Profiler = Profiler; - exports.StrictMode = StrictMode; - exports.Suspense = Suspense; - exports.SuspenseList = SuspenseList; - exports.isContextConsumer = isContextConsumer; - exports.isContextProvider = isContextProvider; - exports.isElement = isElement; - exports.isForwardRef = isForwardRef; - exports.isFragment = isFragment; - exports.isLazy = isLazy; - exports.isMemo = isMemo; - exports.isPortal = isPortal; - exports.isProfiler = isProfiler; - exports.isStrictMode = isStrictMode; - exports.isSuspense = isSuspense; - exports.isSuspenseList = isSuspenseList; - exports.isValidElementType = isValidElementType; - exports.typeOf = typeOf; +exports.ContextConsumer = ContextConsumer; +exports.ContextProvider = ContextProvider; +exports.Element = Element; +exports.ForwardRef = ForwardRef; +exports.Fragment = Fragment; +exports.Lazy = Lazy; +exports.Memo = Memo; +exports.Portal = Portal; +exports.Profiler = Profiler; +exports.StrictMode = StrictMode; +exports.Suspense = Suspense; +exports.SuspenseList = SuspenseList; +exports.isContextConsumer = isContextConsumer; +exports.isContextProvider = isContextProvider; +exports.isElement = isElement; +exports.isForwardRef = isForwardRef; +exports.isFragment = isFragment; +exports.isLazy = isLazy; +exports.isMemo = isMemo; +exports.isPortal = isPortal; +exports.isProfiler = isProfiler; +exports.isStrictMode = isStrictMode; +exports.isSuspense = isSuspense; +exports.isSuspenseList = isSuspenseList; +exports.isValidElementType = isValidElementType; +exports.typeOf = typeOf; })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js index e23f78a77de97..3d412c54b2090 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js +++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react-test-renderer/cjs/ReactTestRenderer-dev.js @@ -7,8777 +7,7735 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<> + * @generated SignedSource<> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; + (function() { +'use strict'; - var React = require("react"); - var Scheduler = require("scheduler/unstable_mock"); - var Scheduler$1 = require("scheduler"); +var React = require('react'); +var Scheduler = require('scheduler/unstable_mock'); +var Scheduler$1 = require('scheduler'); - var ReactSharedInternals = - React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; +var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; - // by calls to these methods by a Babel plugin. - // - // In PROD (or in packages without access to React internals), - // they are left as they are instead. - - function warn(format) { - { - { - for ( - var _len = arguments.length, - args = new Array(_len > 1 ? _len - 1 : 0), - _key = 1; - _key < _len; - _key++ - ) { - args[_key - 1] = arguments[_key]; - } +// by calls to these methods by a Babel plugin. +// +// In PROD (or in packages without access to React internals), +// they are left as they are instead. - printWarning("warn", format, args); - } +function warn(format) { + { + { + for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; } - } - function error(format) { - { - { - for ( - var _len2 = arguments.length, - args = new Array(_len2 > 1 ? _len2 - 1 : 0), - _key2 = 1; - _key2 < _len2; - _key2++ - ) { - args[_key2 - 1] = arguments[_key2]; - } - printWarning("error", format, args); - } - } + printWarning('warn', format, args); } - - function printWarning(level, format, args) { - // When changing this logic, you might want to also - // update consoleWithStackDev.www.js as well. - { - var stack = ReactSharedInternals.getStackAddendum(); - - if (stack !== "") { - format += "%s"; - args = args.concat([stack]); - } // eslint-disable-next-line react-internal/safe-string-coercion - - var argsWithFormat = args.map(function (item) { - return String(item); - }); // Careful: RN currently depends on this prefix - - argsWithFormat.unshift("Warning: " + format); // We intentionally don't use spread (or .apply) directly because it - // breaks IE9: https://github.com/facebook/react/issues/13610 - // eslint-disable-next-line react-internal/no-production-logging - - Function.prototype.apply.call(console[level], console, argsWithFormat); - } - } - - function _defineProperties(target, props) { - for (var i = 0; i < props.length; i++) { - var descriptor = props[i]; - descriptor.enumerable = descriptor.enumerable || false; - descriptor.configurable = true; - if ("value" in descriptor) descriptor.writable = true; - Object.defineProperty(target, descriptor.key, descriptor); - } - } - - function _createClass(Constructor, protoProps, staticProps) { - if (protoProps) _defineProperties(Constructor.prototype, protoProps); - if (staticProps) _defineProperties(Constructor, staticProps); - return Constructor; - } - - function _objectWithoutPropertiesLoose(source, excluded) { - if (source == null) return {}; - var target = {}; - var sourceKeys = Object.keys(source); - var key, i; - - for (i = 0; i < sourceKeys.length; i++) { - key = sourceKeys[i]; - if (excluded.indexOf(key) >= 0) continue; - target[key] = source[key]; - } - - return target; - } - - var assign = Object.assign; - - var LegacyRoot = 0; - var ConcurrentRoot = 1; - - /** - * `ReactInstanceMap` maintains a mapping from a public facing stateful - * instance (key) and the internal representation (value). This allows public - * methods to accept the user facing instance as an argument and map them back - * to internal methods. - * - * Note that this module is currently shared and assumed to be stateless. - * If this becomes an actual Map, that will break. - */ - function get(key) { - return key._reactInternals; - } - function set(key, value) { - key._reactInternals = value; - } - - var debugRenderPhaseSideEffectsForStrictMode = false; - var enableSchedulingProfiler = true; - var enableProfilerTimer = true; - var enableProfilerCommitHooks = true; - var enableProfilerNestedUpdatePhase = true; - var syncLaneExpirationMs = 250; - var transitionLaneExpirationMs = 5000; - var enableLazyContextPropagation = false; - var enableLegacyHidden = false; - var enableAsyncActions = true; - var disableLegacyMode = false; - - var FunctionComponent = 0; - var ClassComponent = 1; - var HostRoot = 3; // Root of a host tree. Could be nested inside another node. - - var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. - - var HostComponent = 5; - var HostText = 6; - var Fragment = 7; - var Mode = 8; - var ContextConsumer = 9; - var ContextProvider = 10; - var ForwardRef = 11; - var Profiler = 12; - var SuspenseComponent = 13; - var MemoComponent = 14; - var SimpleMemoComponent = 15; - var LazyComponent = 16; - var IncompleteClassComponent = 17; - var DehydratedFragment = 18; - var SuspenseListComponent = 19; - var ScopeComponent = 21; - var OffscreenComponent = 22; - var LegacyHiddenComponent = 23; - var CacheComponent = 24; - var TracingMarkerComponent = 25; - var HostHoistable = 26; - var HostSingleton = 27; - var IncompleteFunctionComponent = 28; - - // ATTENTION - // When adding new symbols to this file, - // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' - // The Symbol used to tag the ReactElement-like types. - var REACT_ELEMENT_TYPE = Symbol.for("react.element"); - var REACT_PORTAL_TYPE = Symbol.for("react.portal"); - var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); - var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); - var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); - var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); // TODO: Delete with enableRenderableContext - - var REACT_CONSUMER_TYPE = Symbol.for("react.consumer"); - var REACT_CONTEXT_TYPE = Symbol.for("react.context"); - var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); - var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); - var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); - var REACT_MEMO_TYPE = Symbol.for("react.memo"); - var REACT_LAZY_TYPE = Symbol.for("react.lazy"); - var REACT_SCOPE_TYPE = Symbol.for("react.scope"); - var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for("react.debug_trace_mode"); - var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); - var REACT_LEGACY_HIDDEN_TYPE = Symbol.for("react.legacy_hidden"); - var REACT_TRACING_MARKER_TYPE = Symbol.for("react.tracing_marker"); - var REACT_MEMO_CACHE_SENTINEL = Symbol.for("react.memo_cache_sentinel"); - var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; - var FAUX_ITERATOR_SYMBOL = "@@iterator"; - function getIteratorFn(maybeIterable) { - if (maybeIterable === null || typeof maybeIterable !== "object") { - return null; + } +} +function error(format) { + { + { + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + args[_key2 - 1] = arguments[_key2]; } - var maybeIterator = - (MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) || - maybeIterable[FAUX_ITERATOR_SYMBOL]; + printWarning('error', format, args); + } + } +} - if (typeof maybeIterator === "function") { - return maybeIterator; - } +function printWarning(level, format, args) { + // When changing this logic, you might want to also + // update consoleWithStackDev.www.js as well. + { + var stack = ReactSharedInternals.getStackAddendum(); - return null; - } + if (stack !== '') { + format += '%s'; + args = args.concat([stack]); + } // eslint-disable-next-line react-internal/safe-string-coercion - function getWrappedName$1(outerType, innerType, wrapperName) { - var displayName = outerType.displayName; - if (displayName) { - return displayName; - } + var argsWithFormat = args.map(function (item) { + return String(item); + }); // Careful: RN currently depends on this prefix - var functionName = innerType.displayName || innerType.name || ""; - return functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName; - } // Keep in sync with react-reconciler/getComponentNameFromFiber + argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it + // breaks IE9: https://github.com/facebook/react/issues/13610 + // eslint-disable-next-line react-internal/no-production-logging - function getContextName$1(type) { - return type.displayName || "Context"; - } + Function.prototype.apply.call(console[level], console, argsWithFormat); + } +} - var REACT_CLIENT_REFERENCE = Symbol.for("react.client.reference"); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. +function _defineProperties(target, props) { + for (var i = 0; i < props.length; i++) { + var descriptor = props[i]; + descriptor.enumerable = descriptor.enumerable || false; + descriptor.configurable = true; + if ("value" in descriptor) descriptor.writable = true; + Object.defineProperty(target, descriptor.key, descriptor); + } +} - function getComponentNameFromType(type) { - if (type == null) { - // Host root, text node or just invalid type. - return null; - } +function _createClass(Constructor, protoProps, staticProps) { + if (protoProps) _defineProperties(Constructor.prototype, protoProps); + if (staticProps) _defineProperties(Constructor, staticProps); + return Constructor; +} - if (typeof type === "function") { - if (type.$$typeof === REACT_CLIENT_REFERENCE) { - // TODO: Create a convention for naming client references with debug info. - return null; - } +function _objectWithoutPropertiesLoose(source, excluded) { + if (source == null) return {}; + var target = {}; + var sourceKeys = Object.keys(source); + var key, i; - return type.displayName || type.name || null; - } + for (i = 0; i < sourceKeys.length; i++) { + key = sourceKeys[i]; + if (excluded.indexOf(key) >= 0) continue; + target[key] = source[key]; + } - if (typeof type === "string") { - return type; - } + return target; +} - switch (type) { - case REACT_FRAGMENT_TYPE: - return "Fragment"; +var assign = Object.assign; - case REACT_PORTAL_TYPE: - return "Portal"; +var LegacyRoot = 0; +var ConcurrentRoot = 1; - case REACT_PROFILER_TYPE: - return "Profiler"; +/** + * `ReactInstanceMap` maintains a mapping from a public facing stateful + * instance (key) and the internal representation (value). This allows public + * methods to accept the user facing instance as an argument and map them back + * to internal methods. + * + * Note that this module is currently shared and assumed to be stateless. + * If this becomes an actual Map, that will break. + */ +function get(key) { + return key._reactInternals; +} +function set(key, value) { + key._reactInternals = value; +} - case REACT_STRICT_MODE_TYPE: - return "StrictMode"; +var debugRenderPhaseSideEffectsForStrictMode = false; +var enableSchedulingProfiler = true; +var enableProfilerTimer = true; +var enableProfilerCommitHooks = true; +var enableProfilerNestedUpdatePhase = true; +var syncLaneExpirationMs = 250; +var transitionLaneExpirationMs = 5000; +var enableLazyContextPropagation = false; +var enableLegacyHidden = false; +var enableAsyncActions = true; +var disableLegacyMode = false; + +var FunctionComponent = 0; +var ClassComponent = 1; +var HostRoot = 3; // Root of a host tree. Could be nested inside another node. + +var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. + +var HostComponent = 5; +var HostText = 6; +var Fragment = 7; +var Mode = 8; +var ContextConsumer = 9; +var ContextProvider = 10; +var ForwardRef = 11; +var Profiler = 12; +var SuspenseComponent = 13; +var MemoComponent = 14; +var SimpleMemoComponent = 15; +var LazyComponent = 16; +var IncompleteClassComponent = 17; +var DehydratedFragment = 18; +var SuspenseListComponent = 19; +var ScopeComponent = 21; +var OffscreenComponent = 22; +var LegacyHiddenComponent = 23; +var CacheComponent = 24; +var TracingMarkerComponent = 25; +var HostHoistable = 26; +var HostSingleton = 27; +var IncompleteFunctionComponent = 28; + +// ATTENTION +// When adding new symbols to this file, +// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' +// The Symbol used to tag the ReactElement-like types. +var REACT_ELEMENT_TYPE = Symbol.for('react.element'); +var REACT_PORTAL_TYPE = Symbol.for('react.portal'); +var REACT_FRAGMENT_TYPE = Symbol.for('react.fragment'); +var REACT_STRICT_MODE_TYPE = Symbol.for('react.strict_mode'); +var REACT_PROFILER_TYPE = Symbol.for('react.profiler'); +var REACT_PROVIDER_TYPE = Symbol.for('react.provider'); // TODO: Delete with enableRenderableContext + +var REACT_CONSUMER_TYPE = Symbol.for('react.consumer'); +var REACT_CONTEXT_TYPE = Symbol.for('react.context'); +var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref'); +var REACT_SUSPENSE_TYPE = Symbol.for('react.suspense'); +var REACT_SUSPENSE_LIST_TYPE = Symbol.for('react.suspense_list'); +var REACT_MEMO_TYPE = Symbol.for('react.memo'); +var REACT_LAZY_TYPE = Symbol.for('react.lazy'); +var REACT_SCOPE_TYPE = Symbol.for('react.scope'); +var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for('react.debug_trace_mode'); +var REACT_OFFSCREEN_TYPE = Symbol.for('react.offscreen'); +var REACT_LEGACY_HIDDEN_TYPE = Symbol.for('react.legacy_hidden'); +var REACT_TRACING_MARKER_TYPE = Symbol.for('react.tracing_marker'); +var REACT_MEMO_CACHE_SENTINEL = Symbol.for('react.memo_cache_sentinel'); +var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; +var FAUX_ITERATOR_SYMBOL = '@@iterator'; +function getIteratorFn(maybeIterable) { + if (maybeIterable === null || typeof maybeIterable !== 'object') { + return null; + } + + var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]; + + if (typeof maybeIterator === 'function') { + return maybeIterator; + } + + return null; +} - case REACT_SUSPENSE_TYPE: - return "Suspense"; +function getWrappedName$1(outerType, innerType, wrapperName) { + var displayName = outerType.displayName; - case REACT_SUSPENSE_LIST_TYPE: - return "SuspenseList"; - } + if (displayName) { + return displayName; + } - if (typeof type === "object") { - { - if (typeof type.tag === "number") { - error( - "Received an unexpected object in getComponentNameFromType(). " + - "This is likely a bug in React. Please file an issue." - ); - } - } + var functionName = innerType.displayName || innerType.name || ''; + return functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName; +} // Keep in sync with react-reconciler/getComponentNameFromFiber - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: { - var provider = type; - return getContextName$1(provider._context) + ".Provider"; - } - case REACT_CONTEXT_TYPE: - var context = type; +function getContextName$1(type) { + return type.displayName || 'Context'; +} - { - return getContextName$1(context) + ".Consumer"; - } +var REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference'); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. - case REACT_CONSUMER_TYPE: { - return null; - } +function getComponentNameFromType(type) { + if (type == null) { + // Host root, text node or just invalid type. + return null; + } - case REACT_FORWARD_REF_TYPE: - return getWrappedName$1(type, type.render, "ForwardRef"); + if (typeof type === 'function') { + if (type.$$typeof === REACT_CLIENT_REFERENCE) { + // TODO: Create a convention for naming client references with debug info. + return null; + } - case REACT_MEMO_TYPE: - var outerName = type.displayName || null; + return type.displayName || type.name || null; + } - if (outerName !== null) { - return outerName; - } + if (typeof type === 'string') { + return type; + } - return getComponentNameFromType(type.type) || "Memo"; + switch (type) { + case REACT_FRAGMENT_TYPE: + return 'Fragment'; - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; + case REACT_PORTAL_TYPE: + return 'Portal'; - try { - return getComponentNameFromType(init(payload)); - } catch (x) { - return null; - } - } - } - } + case REACT_PROFILER_TYPE: + return 'Profiler'; - return null; - } + case REACT_STRICT_MODE_TYPE: + return 'StrictMode'; - function getWrappedName(outerType, innerType, wrapperName) { - var functionName = innerType.displayName || innerType.name || ""; - return ( - outerType.displayName || - (functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName) - ); - } // Keep in sync with shared/getComponentNameFromType + case REACT_SUSPENSE_TYPE: + return 'Suspense'; - function getContextName(type) { - return type.displayName || "Context"; - } + case REACT_SUSPENSE_LIST_TYPE: + return 'SuspenseList'; - function getComponentNameFromOwner(owner) { - if (typeof owner.tag === "number") { - return getComponentNameFromFiber(owner); - } + } - if (typeof owner.name === "string") { - return owner.name; + if (typeof type === 'object') { + { + if (typeof type.tag === 'number') { + error('Received an unexpected object in getComponentNameFromType(). ' + 'This is likely a bug in React. Please file an issue.'); } - - return null; } - function getComponentNameFromFiber(fiber) { - var tag = fiber.tag, - type = fiber.type; - - switch (tag) { - case CacheComponent: - return "Cache"; - - case ContextConsumer: { - var context = type; - return getContextName(context) + ".Consumer"; - } - case ContextProvider: { + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + { var provider = type; - return getContextName(provider._context) + ".Provider"; + return getContextName$1(provider._context) + '.Provider'; } - case DehydratedFragment: - return "DehydratedFragment"; + case REACT_CONTEXT_TYPE: + var context = type; - case ForwardRef: - return getWrappedName(type, type.render, "ForwardRef"); + { + return getContextName$1(context) + '.Consumer'; + } - case Fragment: - return "Fragment"; + case REACT_CONSUMER_TYPE: + { + return null; + } - case HostHoistable: - case HostSingleton: - case HostComponent: - // Host component type is the display name (e.g. "div", "View") - return type; + case REACT_FORWARD_REF_TYPE: + return getWrappedName$1(type, type.render, 'ForwardRef'); - case HostPortal: - return "Portal"; + case REACT_MEMO_TYPE: + var outerName = type.displayName || null; - case HostRoot: - return "Root"; + if (outerName !== null) { + return outerName; + } - case HostText: - return "Text"; + return getComponentNameFromType(type.type) || 'Memo'; - case LazyComponent: - // Name comes from the type in this case; we don't have a tag. - return getComponentNameFromType(type); + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; - case Mode: - if (type === REACT_STRICT_MODE_TYPE) { - // Don't be less specific than shared/getComponentNameFromType - return "StrictMode"; + try { + return getComponentNameFromType(init(payload)); + } catch (x) { + return null; } + } + } + } - return "Mode"; - - case OffscreenComponent: - return "Offscreen"; - - case Profiler: - return "Profiler"; + return null; +} - case ScopeComponent: - return "Scope"; +function getWrappedName(outerType, innerType, wrapperName) { + var functionName = innerType.displayName || innerType.name || ''; + return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName); +} // Keep in sync with shared/getComponentNameFromType - case SuspenseComponent: - return "Suspense"; - case SuspenseListComponent: - return "SuspenseList"; +function getContextName(type) { + return type.displayName || 'Context'; +} - case TracingMarkerComponent: - return "TracingMarker"; - // The display name for these tags come from the user-provided type: +function getComponentNameFromOwner(owner) { + if (typeof owner.tag === 'number') { + return getComponentNameFromFiber(owner); + } - case IncompleteClassComponent: - case IncompleteFunctionComponent: + if (typeof owner.name === 'string') { + return owner.name; + } - // Fallthrough + return null; +} +function getComponentNameFromFiber(fiber) { + var tag = fiber.tag, + type = fiber.type; - case ClassComponent: - case FunctionComponent: - case MemoComponent: - case SimpleMemoComponent: - if (typeof type === "function") { - return type.displayName || type.name || null; - } + switch (tag) { + case CacheComponent: + return 'Cache'; - if (typeof type === "string") { - return type; - } + case ContextConsumer: + { + var context = type; + return getContextName(context) + '.Consumer'; + } - break; + case ContextProvider: + { + var provider = type; + return getContextName(provider._context) + '.Provider'; } - return null; - } + case DehydratedFragment: + return 'DehydratedFragment'; - var NoFlags$1 = - /* */ - 0; - var PerformedWork = - /* */ - 1; - var Placement = - /* */ - 2; - var DidCapture = - /* */ - 128; - var Hydrating = - /* */ - 4096; // You can change the rest (and add more). - - var Update = - /* */ - 4; - /* Skipped value: 0b0000000000000000000000001000; */ - - var ChildDeletion = - /* */ - 16; - var ContentReset = - /* */ - 32; - var Callback = - /* */ - 64; - /* Used by DidCapture: 0b0000000000000000000010000000; */ - - var ForceClientRender = - /* */ - 256; - var Ref = - /* */ - 512; - var Snapshot = - /* */ - 1024; - var Passive$1 = - /* */ - 2048; - /* Used by Hydrating: 0b0000000000000001000000000000; */ - - var Visibility = - /* */ - 8192; - var StoreConsistency = - /* */ - 16384; // It's OK to reuse these bits because these flags are mutually exclusive for - // different fiber types. We should really be doing this for as many flags as - // possible, because we're about to run out of bits. - - var ScheduleRetry = StoreConsistency; - var ShouldSuspendCommit = Visibility; - var DidDefer = ContentReset; - var FormReset = Snapshot; - var LifecycleEffectMask = - Passive$1 | Update | Callback | Ref | Snapshot | StoreConsistency; // Union of all commit flags (flags with the lifetime of a particular commit) - - var HostEffectMask = - /* */ - 32767; // These are not really side effects, but we still reuse this field. - - var Incomplete = - /* */ - 32768; - var ShouldCapture = - /* */ - 65536; - var ForceUpdateForLegacySuspense = - /* */ - 131072; - var Forked = - /* */ - 1048576; // Static tags describe aspects of a fiber that are not specific to a render, - // e.g. a fiber uses a passive effect (even if there are no updates on this particular render). - // This enables us to defer more work in the unmount case, - // since we can defer traversing the tree during layout to look for Passive effects, - // and instead rely on the static flag as a signal that there may be cleanup work. - - var RefStatic = - /* */ - 2097152; - var LayoutStatic = - /* */ - 4194304; - var PassiveStatic = - /* */ - 8388608; - var MaySuspendCommit = - /* */ - 16777216; // Flag used to identify newly inserted fibers. It isn't reset after commit unlike `Placement`. - - var PlacementDEV = - /* */ - 33554432; - var MountLayoutDev = - /* */ - 67108864; - var MountPassiveDev = - /* */ - 134217728; // Groups of flags that are used in the commit phase to skip over trees that - // don't contain effects, by checking subtreeFlags. - - var BeforeMutationMask = // TODO: Remove Update flag from before mutation phase by re-landing Visibility - // flag logic (see #20043) - Update | Snapshot | 0; - var MutationMask = - Placement | - Update | - ChildDeletion | - ContentReset | - Ref | - Hydrating | - Visibility | - FormReset; - var LayoutMask = Update | Callback | Ref | Visibility; // TODO: Split into PassiveMountMask and PassiveUnmountMask - - var PassiveMask = Passive$1 | Visibility | ChildDeletion; // Union of tags that don't get reset on clones. - // This allows certain concepts to persist without recalculating them, - // e.g. whether a subtree contains passive effects or portals. - - var StaticMask = - LayoutStatic | PassiveStatic | RefStatic | MaySuspendCommit; - - function getNearestMountedFiber(fiber) { - var node = fiber; - var nearestMounted = fiber; - - if (!fiber.alternate) { - // If there is no alternate, this might be a new tree that isn't inserted - // yet. If it is, then it will have a pending insertion effect on it. - var nextNode = node; + case ForwardRef: + return getWrappedName(type, type.render, 'ForwardRef'); - do { - node = nextNode; + case Fragment: + return 'Fragment'; - if ((node.flags & (Placement | Hydrating)) !== NoFlags$1) { - // This is an insertion or in-progress hydration. The nearest possible - // mounted fiber is the parent but we need to continue to figure out - // if that one is still mounted. - nearestMounted = node.return; - } // $FlowFixMe[incompatible-type] we bail out when we get a null + case HostHoistable: + case HostSingleton: + case HostComponent: + // Host component type is the display name (e.g. "div", "View") + return type; - nextNode = node.return; - } while (nextNode); - } else { - while (node.return) { - node = node.return; - } - } + case HostPortal: + return 'Portal'; - if (node.tag === HostRoot) { - // TODO: Check if this was a nested HostRoot when used with - // renderContainerIntoSubtree. - return nearestMounted; - } // If we didn't hit the root, that means that we're in an disconnected tree - // that has been unmounted. + case HostRoot: + return 'Root'; - return null; - } - function isFiberMounted(fiber) { - return getNearestMountedFiber(fiber) === fiber; - } - function isMounted(component) { - { - var owner = ReactSharedInternals.owner; - - if (owner !== null && owner.tag === ClassComponent) { - var ownerFiber = owner; - var instance = ownerFiber.stateNode; - - if (!instance._warnedAboutRefsInRender) { - error( - "%s is accessing isMounted inside its render() function. " + - "render() should be a pure function of props and state. It should " + - "never access something that requires stale data from the previous " + - "render, such as refs. Move this logic to componentDidMount and " + - "componentDidUpdate instead.", - getComponentNameFromFiber(ownerFiber) || "A component" - ); - } + case HostText: + return 'Text'; - instance._warnedAboutRefsInRender = true; - } + case LazyComponent: + // Name comes from the type in this case; we don't have a tag. + return getComponentNameFromType(type); + + case Mode: + if (type === REACT_STRICT_MODE_TYPE) { + // Don't be less specific than shared/getComponentNameFromType + return 'StrictMode'; } - var fiber = get(component); + return 'Mode'; - if (!fiber) { - return false; - } + case OffscreenComponent: + return 'Offscreen'; - return getNearestMountedFiber(fiber) === fiber; - } + case Profiler: + return 'Profiler'; - function assertIsMounted(fiber) { - if (getNearestMountedFiber(fiber) !== fiber) { - throw new Error("Unable to find node on an unmounted component."); - } - } + case ScopeComponent: + return 'Scope'; - function findCurrentFiberUsingSlowPath(fiber) { - var alternate = fiber.alternate; + case SuspenseComponent: + return 'Suspense'; - if (!alternate) { - // If there is no alternate, then we only need to check if it is mounted. - var nearestMounted = getNearestMountedFiber(fiber); + case SuspenseListComponent: + return 'SuspenseList'; - if (nearestMounted === null) { - throw new Error("Unable to find node on an unmounted component."); - } + case TracingMarkerComponent: + return 'TracingMarker'; + // The display name for these tags come from the user-provided type: - if (nearestMounted !== fiber) { - return null; - } + case IncompleteClassComponent: + case IncompleteFunctionComponent: - return fiber; - } // If we have two possible branches, we'll walk backwards up to the root - // to see what path the root points to. On the way we may hit one of the - // special cases and we'll deal with them. + // Fallthrough - var a = fiber; - var b = alternate; + case ClassComponent: + case FunctionComponent: + case MemoComponent: + case SimpleMemoComponent: + if (typeof type === 'function') { + return type.displayName || type.name || null; + } - while (true) { - var parentA = a.return; + if (typeof type === 'string') { + return type; + } - if (parentA === null) { - // We're at the root. - break; - } + break; - var parentB = parentA.alternate; + } - if (parentB === null) { - // There is no alternate. This is an unusual case. Currently, it only - // happens when a Suspense component is hidden. An extra fragment fiber - // is inserted in between the Suspense fiber and its children. Skip - // over this extra fragment fiber and proceed to the next parent. - var nextParent = parentA.return; + return null; +} - if (nextParent !== null) { - a = b = nextParent; - continue; - } // If there's no parent, we're at the root. +var NoFlags$1 = +/* */ +0; +var PerformedWork = +/* */ +1; +var Placement = +/* */ +2; +var DidCapture = +/* */ +128; +var Hydrating = +/* */ +4096; // You can change the rest (and add more). + +var Update = +/* */ +4; +/* Skipped value: 0b0000000000000000000000001000; */ + +var ChildDeletion = +/* */ +16; +var ContentReset = +/* */ +32; +var Callback = +/* */ +64; +/* Used by DidCapture: 0b0000000000000000000010000000; */ + +var ForceClientRender = +/* */ +256; +var Ref = +/* */ +512; +var Snapshot = +/* */ +1024; +var Passive$1 = +/* */ +2048; +/* Used by Hydrating: 0b0000000000000001000000000000; */ + +var Visibility = +/* */ +8192; +var StoreConsistency = +/* */ +16384; // It's OK to reuse these bits because these flags are mutually exclusive for +// different fiber types. We should really be doing this for as many flags as +// possible, because we're about to run out of bits. + +var ScheduleRetry = StoreConsistency; +var ShouldSuspendCommit = Visibility; +var DidDefer = ContentReset; +var FormReset = Snapshot; +var LifecycleEffectMask = Passive$1 | Update | Callback | Ref | Snapshot | StoreConsistency; // Union of all commit flags (flags with the lifetime of a particular commit) + +var HostEffectMask = +/* */ +32767; // These are not really side effects, but we still reuse this field. + +var Incomplete = +/* */ +32768; +var ShouldCapture = +/* */ +65536; +var ForceUpdateForLegacySuspense = +/* */ +131072; +var Forked = +/* */ +1048576; // Static tags describe aspects of a fiber that are not specific to a render, +// e.g. a fiber uses a passive effect (even if there are no updates on this particular render). +// This enables us to defer more work in the unmount case, +// since we can defer traversing the tree during layout to look for Passive effects, +// and instead rely on the static flag as a signal that there may be cleanup work. + +var RefStatic = +/* */ +2097152; +var LayoutStatic = +/* */ +4194304; +var PassiveStatic = +/* */ +8388608; +var MaySuspendCommit = +/* */ +16777216; // Flag used to identify newly inserted fibers. It isn't reset after commit unlike `Placement`. + +var PlacementDEV = +/* */ +33554432; +var MountLayoutDev = +/* */ +67108864; +var MountPassiveDev = +/* */ +134217728; // Groups of flags that are used in the commit phase to skip over trees that +// don't contain effects, by checking subtreeFlags. + +var BeforeMutationMask = // TODO: Remove Update flag from before mutation phase by re-landing Visibility +// flag logic (see #20043) +Update | Snapshot | (0); +var MutationMask = Placement | Update | ChildDeletion | ContentReset | Ref | Hydrating | Visibility | FormReset; +var LayoutMask = Update | Callback | Ref | Visibility; // TODO: Split into PassiveMountMask and PassiveUnmountMask + +var PassiveMask = Passive$1 | Visibility | ChildDeletion; // Union of tags that don't get reset on clones. +// This allows certain concepts to persist without recalculating them, +// e.g. whether a subtree contains passive effects or portals. + +var StaticMask = LayoutStatic | PassiveStatic | RefStatic | MaySuspendCommit; + +function getNearestMountedFiber(fiber) { + var node = fiber; + var nearestMounted = fiber; + + if (!fiber.alternate) { + // If there is no alternate, this might be a new tree that isn't inserted + // yet. If it is, then it will have a pending insertion effect on it. + var nextNode = node; + + do { + node = nextNode; + + if ((node.flags & (Placement | Hydrating)) !== NoFlags$1) { + // This is an insertion or in-progress hydration. The nearest possible + // mounted fiber is the parent but we need to continue to figure out + // if that one is still mounted. + nearestMounted = node.return; + } // $FlowFixMe[incompatible-type] we bail out when we get a null + + + nextNode = node.return; + } while (nextNode); + } else { + while (node.return) { + node = node.return; + } + } + + if (node.tag === HostRoot) { + // TODO: Check if this was a nested HostRoot when used with + // renderContainerIntoSubtree. + return nearestMounted; + } // If we didn't hit the root, that means that we're in an disconnected tree + // that has been unmounted. + + + return null; +} +function isFiberMounted(fiber) { + return getNearestMountedFiber(fiber) === fiber; +} +function isMounted(component) { + { + var owner = ReactSharedInternals.owner; - break; - } // If both copies of the parent fiber point to the same child, we can - // assume that the child is current. This happens when we bailout on low - // priority: the bailed out fiber's child reuses the current child. - - if (parentA.child === parentB.child) { - var child = parentA.child; - - while (child) { - if (child === a) { - // We've determined that A is the current branch. - assertIsMounted(parentA); - return fiber; - } + if (owner !== null && owner.tag === ClassComponent) { + var ownerFiber = owner; + var instance = ownerFiber.stateNode; - if (child === b) { - // We've determined that B is the current branch. - assertIsMounted(parentA); - return alternate; - } + if (!instance._warnedAboutRefsInRender) { + error('%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentNameFromFiber(ownerFiber) || 'A component'); + } - child = child.sibling; - } // We should never have an alternate for any mounting node. So the only - // way this could possibly happen is if this was unmounted, if at all. + instance._warnedAboutRefsInRender = true; + } + } - throw new Error("Unable to find node on an unmounted component."); - } + var fiber = get(component); - if (a.return !== b.return) { - // The return pointer of A and the return pointer of B point to different - // fibers. We assume that return pointers never criss-cross, so A must - // belong to the child set of A.return, and B must belong to the child - // set of B.return. - a = parentA; - b = parentB; - } else { - // The return pointers point to the same fiber. We'll have to use the - // default, slow path: scan the child sets of each parent alternate to see - // which child belongs to which set. - // - // Search parent A's child set - var didFindChild = false; - var _child = parentA.child; - - while (_child) { - if (_child === a) { - didFindChild = true; - a = parentA; - b = parentB; - break; - } + if (!fiber) { + return false; + } - if (_child === b) { - didFindChild = true; - b = parentA; - a = parentB; - break; - } + return getNearestMountedFiber(fiber) === fiber; +} - _child = _child.sibling; - } +function assertIsMounted(fiber) { + if (getNearestMountedFiber(fiber) !== fiber) { + throw new Error('Unable to find node on an unmounted component.'); + } +} - if (!didFindChild) { - // Search parent B's child set - _child = parentB.child; +function findCurrentFiberUsingSlowPath(fiber) { + var alternate = fiber.alternate; - while (_child) { - if (_child === a) { - didFindChild = true; - a = parentB; - b = parentA; - break; - } + if (!alternate) { + // If there is no alternate, then we only need to check if it is mounted. + var nearestMounted = getNearestMountedFiber(fiber); - if (_child === b) { - didFindChild = true; - b = parentB; - a = parentA; - break; - } + if (nearestMounted === null) { + throw new Error('Unable to find node on an unmounted component.'); + } - _child = _child.sibling; - } + if (nearestMounted !== fiber) { + return null; + } - if (!didFindChild) { - throw new Error( - "Child was not found in either parent set. This indicates a bug " + - "in React related to the return pointer. Please file an issue." - ); - } - } - } + return fiber; + } // If we have two possible branches, we'll walk backwards up to the root + // to see what path the root points to. On the way we may hit one of the + // special cases and we'll deal with them. - if (a.alternate !== b) { - throw new Error( - "Return fibers should always be each others' alternates. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } // If the root is not a host container, we're in a disconnected tree. I.e. - // unmounted. - if (a.tag !== HostRoot) { - throw new Error("Unable to find node on an unmounted component."); - } + var a = fiber; + var b = alternate; - if (a.stateNode.current === a) { - // We've determined that A is the current branch. - return fiber; - } // Otherwise B has to be current branch. + while (true) { + var parentA = a.return; - return alternate; - } - function findCurrentHostFiber(parent) { - var currentParent = findCurrentFiberUsingSlowPath(parent); - return currentParent !== null - ? findCurrentHostFiberImpl(currentParent) - : null; + if (parentA === null) { + // We're at the root. + break; } - function findCurrentHostFiberImpl(node) { - // Next we'll drill down this component to find the first HostComponent/Text. - var tag = node.tag; + var parentB = parentA.alternate; - if ( - tag === HostComponent || - tag === HostHoistable || - tag === HostSingleton || - tag === HostText - ) { - return node; - } + if (parentB === null) { + // There is no alternate. This is an unusual case. Currently, it only + // happens when a Suspense component is hidden. An extra fragment fiber + // is inserted in between the Suspense fiber and its children. Skip + // over this extra fragment fiber and proceed to the next parent. + var nextParent = parentA.return; - var child = node.child; + if (nextParent !== null) { + a = b = nextParent; + continue; + } // If there's no parent, we're at the root. - while (child !== null) { - var match = findCurrentHostFiberImpl(child); - if (match !== null) { - return match; + break; + } // If both copies of the parent fiber point to the same child, we can + // assume that the child is current. This happens when we bailout on low + // priority: the bailed out fiber's child reuses the current child. + + + if (parentA.child === parentB.child) { + var child = parentA.child; + + while (child) { + if (child === a) { + // We've determined that A is the current branch. + assertIsMounted(parentA); + return fiber; + } + + if (child === b) { + // We've determined that B is the current branch. + assertIsMounted(parentA); + return alternate; } child = child.sibling; - } + } // We should never have an alternate for any mounting node. So the only + // way this could possibly happen is if this was unmounted, if at all. - return null; + + throw new Error('Unable to find node on an unmounted component.'); } - var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare - - function isArray(a) { - return isArrayImpl(a); - } - - // This module only exists as an ESM wrapper around the external CommonJS - var scheduleCallback$3 = Scheduler$1.unstable_scheduleCallback; - var cancelCallback$1 = Scheduler$1.unstable_cancelCallback; - var shouldYield = Scheduler$1.unstable_shouldYield; - var requestPaint = Scheduler$1.unstable_requestPaint; - var now$1 = Scheduler$1.unstable_now; - var ImmediatePriority = Scheduler$1.unstable_ImmediatePriority; - var UserBlockingPriority = Scheduler$1.unstable_UserBlockingPriority; - var NormalPriority$1 = Scheduler$1.unstable_NormalPriority; - var IdlePriority = Scheduler$1.unstable_IdlePriority; // this doesn't actually exist on the scheduler, but it *does* - - // Helpers to patch console.logs to avoid logging during side-effect free - // replaying on render function. This currently only patches the object - // lazily which won't cover if the log function was extracted eagerly. - // We could also eagerly patch the method. - var disabledDepth = 0; - var prevLog; - var prevInfo; - var prevWarn; - var prevError; - var prevGroup; - var prevGroupCollapsed; - var prevGroupEnd; - - function disabledLog() {} - - disabledLog.__reactDisabledLog = true; - function disableLogs() { - { - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - prevLog = console.log; - prevInfo = console.info; - prevWarn = console.warn; - prevError = console.error; - prevGroup = console.group; - prevGroupCollapsed = console.groupCollapsed; - prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 - - var props = { - configurable: true, - enumerable: true, - value: disabledLog, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - info: props, - log: props, - warn: props, - error: props, - group: props, - groupCollapsed: props, - groupEnd: props - }); - /* eslint-enable react-internal/no-production-logging */ - } + if (a.return !== b.return) { + // The return pointer of A and the return pointer of B point to different + // fibers. We assume that return pointers never criss-cross, so A must + // belong to the child set of A.return, and B must belong to the child + // set of B.return. + a = parentA; + b = parentB; + } else { + // The return pointers point to the same fiber. We'll have to use the + // default, slow path: scan the child sets of each parent alternate to see + // which child belongs to which set. + // + // Search parent A's child set + var didFindChild = false; + var _child = parentA.child; - disabledDepth++; - } - } - function reenableLogs() { - { - disabledDepth--; - - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - var props = { - configurable: true, - enumerable: true, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - log: assign({}, props, { - value: prevLog - }), - info: assign({}, props, { - value: prevInfo - }), - warn: assign({}, props, { - value: prevWarn - }), - error: assign({}, props, { - value: prevError - }), - group: assign({}, props, { - value: prevGroup - }), - groupCollapsed: assign({}, props, { - value: prevGroupCollapsed - }), - groupEnd: assign({}, props, { - value: prevGroupEnd - }) - }); - /* eslint-enable react-internal/no-production-logging */ + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentA; + b = parentB; + break; } - if (disabledDepth < 0) { - error( - "disabledDepth fell below zero. " + - "This is a bug in React. Please file an issue." - ); + if (_child === b) { + didFindChild = true; + b = parentA; + a = parentB; + break; } - } - } - var rendererID = null; - var injectedHook = null; - var injectedProfilingHooks = null; - var hasLoggedError = false; - var isDevToolsPresent = - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined"; - function injectInternals(internals) { - if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === "undefined") { - // No DevTools - return false; + _child = _child.sibling; } - var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__; - - if (hook.isDisabled) { - // This isn't a real property on the hook, but it can be set to opt out - // of DevTools integration and associated warnings and logs. - // https://github.com/facebook/react/issues/3877 - return true; - } + if (!didFindChild) { + // Search parent B's child set + _child = parentB.child; - if (!hook.supportsFiber) { - { - error( - "The installed version of React DevTools is too old and will not work " + - "with the current version of React. Please update React DevTools. " + - "https://react.dev/link/react-devtools" - ); - } // DevTools exists, even though it doesn't support Fiber. + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentB; + b = parentA; + break; + } - return true; - } + if (_child === b) { + didFindChild = true; + b = parentB; + a = parentA; + break; + } - try { - if (enableSchedulingProfiler) { - // Conditionally inject these hooks only if Timeline profiler is supported by this build. - // This gives DevTools a way to feature detect that isn't tied to version number - // (since profiling and timeline are controlled by different feature flags). - internals = assign({}, internals, { - getLaneLabelMap: getLaneLabelMap, - injectProfilingHooks: injectProfilingHooks - }); + _child = _child.sibling; } - rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks. - - injectedHook = hook; - } catch (err) { - // Catch all errors because it is unsafe to throw during initialization. - { - error("React instrumentation encountered an error: %s.", err); + if (!didFindChild) { + throw new Error('Child was not found in either parent set. This indicates a bug ' + 'in React related to the return pointer. Please file an issue.'); } } - - if (hook.checkDCE) { - // This is the real DevTools. - return true; - } else { - // This is likely a hook installed by Fast Refresh runtime. - return false; - } } - function onScheduleRoot(root, children) { - { - if ( - injectedHook && - typeof injectedHook.onScheduleFiberRoot === "function" - ) { - try { - injectedHook.onScheduleFiberRoot(rendererID, root, children); - } catch (err) { - if (!hasLoggedError) { - hasLoggedError = true; - error("React instrumentation encountered an error: %s", err); - } - } - } - } + if (a.alternate !== b) { + throw new Error("Return fibers should always be each others' alternates. " + 'This error is likely caused by a bug in React. Please file an issue.'); } - function onCommitRoot(root, eventPriority) { - if ( - injectedHook && - typeof injectedHook.onCommitFiberRoot === "function" - ) { - try { - var didError = (root.current.flags & DidCapture) === DidCapture; + } // If the root is not a host container, we're in a disconnected tree. I.e. + // unmounted. - if (enableProfilerTimer) { - var schedulerPriority; - switch (eventPriority) { - case DiscreteEventPriority: - schedulerPriority = ImmediatePriority; - break; + if (a.tag !== HostRoot) { + throw new Error('Unable to find node on an unmounted component.'); + } - case ContinuousEventPriority: - schedulerPriority = UserBlockingPriority; - break; + if (a.stateNode.current === a) { + // We've determined that A is the current branch. + return fiber; + } // Otherwise B has to be current branch. - case DefaultEventPriority: - schedulerPriority = NormalPriority$1; - break; - case IdleEventPriority: - schedulerPriority = IdlePriority; - break; + return alternate; +} +function findCurrentHostFiber(parent) { + var currentParent = findCurrentFiberUsingSlowPath(parent); + return currentParent !== null ? findCurrentHostFiberImpl(currentParent) : null; +} - default: - schedulerPriority = NormalPriority$1; - break; - } +function findCurrentHostFiberImpl(node) { + // Next we'll drill down this component to find the first HostComponent/Text. + var tag = node.tag; - injectedHook.onCommitFiberRoot( - rendererID, - root, - schedulerPriority, - didError - ); - } - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + if (tag === HostComponent || tag === HostHoistable || tag === HostSingleton || tag === HostText) { + return node; + } - error("React instrumentation encountered an error: %s", err); - } - } - } - } - } - function onPostCommitRoot(root) { - if ( - injectedHook && - typeof injectedHook.onPostCommitFiberRoot === "function" - ) { - try { - injectedHook.onPostCommitFiberRoot(rendererID, root); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + var child = node.child; - error("React instrumentation encountered an error: %s", err); - } - } - } - } + while (child !== null) { + var match = findCurrentHostFiberImpl(child); + + if (match !== null) { + return match; } - function onCommitUnmount(fiber) { - if ( - injectedHook && - typeof injectedHook.onCommitFiberUnmount === "function" - ) { - try { - injectedHook.onCommitFiberUnmount(rendererID, fiber); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; - error("React instrumentation encountered an error: %s", err); - } - } - } - } + child = child.sibling; + } + + return null; +} + +var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare + +function isArray(a) { + return isArrayImpl(a); +} + +// This module only exists as an ESM wrapper around the external CommonJS +var scheduleCallback$3 = Scheduler$1.unstable_scheduleCallback; +var cancelCallback$1 = Scheduler$1.unstable_cancelCallback; +var shouldYield = Scheduler$1.unstable_shouldYield; +var requestPaint = Scheduler$1.unstable_requestPaint; +var now$1 = Scheduler$1.unstable_now; +var ImmediatePriority = Scheduler$1.unstable_ImmediatePriority; +var UserBlockingPriority = Scheduler$1.unstable_UserBlockingPriority; +var NormalPriority$1 = Scheduler$1.unstable_NormalPriority; +var IdlePriority = Scheduler$1.unstable_IdlePriority; // this doesn't actually exist on the scheduler, but it *does* + +// Helpers to patch console.logs to avoid logging during side-effect free +// replaying on render function. This currently only patches the object +// lazily which won't cover if the log function was extracted eagerly. +// We could also eagerly patch the method. +var disabledDepth = 0; +var prevLog; +var prevInfo; +var prevWarn; +var prevError; +var prevGroup; +var prevGroupCollapsed; +var prevGroupEnd; + +function disabledLog() {} + +disabledLog.__reactDisabledLog = true; +function disableLogs() { + { + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + prevLog = console.log; + prevInfo = console.info; + prevWarn = console.warn; + prevError = console.error; + prevGroup = console.group; + prevGroupCollapsed = console.groupCollapsed; + prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 + + var props = { + configurable: true, + enumerable: true, + value: disabledLog, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + info: props, + log: props, + warn: props, + error: props, + group: props, + groupCollapsed: props, + groupEnd: props + }); + /* eslint-enable react-internal/no-production-logging */ + } + + disabledDepth++; + } +} +function reenableLogs() { + { + disabledDepth--; + + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + var props = { + configurable: true, + enumerable: true, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + log: assign({}, props, { + value: prevLog + }), + info: assign({}, props, { + value: prevInfo + }), + warn: assign({}, props, { + value: prevWarn + }), + error: assign({}, props, { + value: prevError + }), + group: assign({}, props, { + value: prevGroup + }), + groupCollapsed: assign({}, props, { + value: prevGroupCollapsed + }), + groupEnd: assign({}, props, { + value: prevGroupEnd + }) + }); + /* eslint-enable react-internal/no-production-logging */ } - function setIsStrictModeForDevtools(newIsStrictMode) { - { - if (newIsStrictMode) { - disableLogs(); - } else { - reenableLogs(); - } - } - } // Profiler API hooks - function injectProfilingHooks(profilingHooks) { - injectedProfilingHooks = profilingHooks; + if (disabledDepth < 0) { + error('disabledDepth fell below zero. ' + 'This is a bug in React. Please file an issue.'); } + } +} - function getLaneLabelMap() { - { - var map = new Map(); - var lane = 1; +var rendererID = null; +var injectedHook = null; +var injectedProfilingHooks = null; +var hasLoggedError = false; +var isDevToolsPresent = typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined'; +function injectInternals(internals) { + if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') { + // No DevTools + return false; + } + + var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__; + + if (hook.isDisabled) { + // This isn't a real property on the hook, but it can be set to opt out + // of DevTools integration and associated warnings and logs. + // https://github.com/facebook/react/issues/3877 + return true; + } + + if (!hook.supportsFiber) { + { + error('The installed version of React DevTools is too old and will not work ' + 'with the current version of React. Please update React DevTools. ' + 'https://react.dev/link/react-devtools'); + } // DevTools exists, even though it doesn't support Fiber. - for (var index = 0; index < TotalLanes; index++) { - var label = getLabelForLane(lane); - map.set(lane, label); - lane *= 2; - } - return map; - } + return true; + } + + try { + if (enableSchedulingProfiler) { + // Conditionally inject these hooks only if Timeline profiler is supported by this build. + // This gives DevTools a way to feature detect that isn't tied to version number + // (since profiling and timeline are controlled by different feature flags). + internals = assign({}, internals, { + getLaneLabelMap: getLaneLabelMap, + injectProfilingHooks: injectProfilingHooks + }); } - function markCommitStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markCommitStarted === "function" - ) { - injectedProfilingHooks.markCommitStarted(lanes); - } - } + rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks. + + injectedHook = hook; + } catch (err) { + // Catch all errors because it is unsafe to throw during initialization. + { + error('React instrumentation encountered an error: %s.', err); } - function markCommitStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markCommitStopped === "function" - ) { - injectedProfilingHooks.markCommitStopped(); + } + + if (hook.checkDCE) { + // This is the real DevTools. + return true; + } else { + // This is likely a hook installed by Fast Refresh runtime. + return false; + } +} +function onScheduleRoot(root, children) { + { + if (injectedHook && typeof injectedHook.onScheduleFiberRoot === 'function') { + try { + injectedHook.onScheduleFiberRoot(rendererID, root, children); + } catch (err) { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentRenderStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentRenderStarted === - "function" - ) { - injectedProfilingHooks.markComponentRenderStarted(fiber); + } +} +function onCommitRoot(root, eventPriority) { + if (injectedHook && typeof injectedHook.onCommitFiberRoot === 'function') { + try { + var didError = (root.current.flags & DidCapture) === DidCapture; + + if (enableProfilerTimer) { + var schedulerPriority; + + switch (eventPriority) { + case DiscreteEventPriority: + schedulerPriority = ImmediatePriority; + break; + + case ContinuousEventPriority: + schedulerPriority = UserBlockingPriority; + break; + + case DefaultEventPriority: + schedulerPriority = NormalPriority$1; + break; + + case IdleEventPriority: + schedulerPriority = IdlePriority; + break; + + default: + schedulerPriority = NormalPriority$1; + break; } + + injectedHook.onCommitFiberRoot(rendererID, root, schedulerPriority, didError); } - } - function markComponentRenderStopped() { + } catch (err) { { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentRenderStopped === - "function" - ) { - injectedProfilingHooks.markComponentRenderStopped(); + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentPassiveEffectMountStarted(fiber) { + } +} +function onPostCommitRoot(root) { + if (injectedHook && typeof injectedHook.onPostCommitFiberRoot === 'function') { + try { + injectedHook.onPostCommitFiberRoot(rendererID, root); + } catch (err) { { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectMountStarted === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectMountStarted(fiber); + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentPassiveEffectMountStopped() { + } +} +function onCommitUnmount(fiber) { + if (injectedHook && typeof injectedHook.onCommitFiberUnmount === 'function') { + try { + injectedHook.onCommitFiberUnmount(rendererID, fiber); + } catch (err) { { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectMountStopped === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectMountStopped(); + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentPassiveEffectUnmountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStarted === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectUnmountStarted( - fiber - ); - } - } + } +} +function setIsStrictModeForDevtools(newIsStrictMode) { + { + if (newIsStrictMode) { + disableLogs(); + } else { + reenableLogs(); + } + } +} // Profiler API hooks + +function injectProfilingHooks(profilingHooks) { + injectedProfilingHooks = profilingHooks; +} + +function getLaneLabelMap() { + { + var map = new Map(); + var lane = 1; + + for (var index = 0; index < TotalLanes; index++) { + var label = getLabelForLane(lane); + map.set(lane, label); + lane *= 2; } - function markComponentPassiveEffectUnmountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStopped === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectUnmountStopped(); - } - } + + return map; + } +} + +function markCommitStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markCommitStarted === 'function') { + injectedProfilingHooks.markCommitStarted(lanes); } - function markComponentLayoutEffectMountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectMountStarted === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectMountStarted(fiber); - } - } + } +} +function markCommitStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markCommitStopped === 'function') { + injectedProfilingHooks.markCommitStopped(); } - function markComponentLayoutEffectMountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectMountStopped === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectMountStopped(); - } - } + } +} +function markComponentRenderStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentRenderStarted === 'function') { + injectedProfilingHooks.markComponentRenderStarted(fiber); } - function markComponentLayoutEffectUnmountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStarted === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectUnmountStarted(fiber); - } - } + } +} +function markComponentRenderStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentRenderStopped === 'function') { + injectedProfilingHooks.markComponentRenderStopped(); } - function markComponentLayoutEffectUnmountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStopped === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectUnmountStopped(); - } - } + } +} +function markComponentPassiveEffectMountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectMountStarted === 'function') { + injectedProfilingHooks.markComponentPassiveEffectMountStarted(fiber); } - function markComponentErrored(fiber, thrownValue, lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentErrored === "function" - ) { - injectedProfilingHooks.markComponentErrored( - fiber, - thrownValue, - lanes - ); - } - } + } +} +function markComponentPassiveEffectMountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectMountStopped === 'function') { + injectedProfilingHooks.markComponentPassiveEffectMountStopped(); } - function markComponentSuspended(fiber, wakeable, lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentSuspended === "function" - ) { - injectedProfilingHooks.markComponentSuspended(fiber, wakeable, lanes); - } - } + } +} +function markComponentPassiveEffectUnmountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStarted === 'function') { + injectedProfilingHooks.markComponentPassiveEffectUnmountStarted(fiber); } - function markLayoutEffectsStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markLayoutEffectsStarted === "function" - ) { - injectedProfilingHooks.markLayoutEffectsStarted(lanes); - } - } + } +} +function markComponentPassiveEffectUnmountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStopped === 'function') { + injectedProfilingHooks.markComponentPassiveEffectUnmountStopped(); } - function markLayoutEffectsStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markLayoutEffectsStopped === "function" - ) { - injectedProfilingHooks.markLayoutEffectsStopped(); - } - } + } +} +function markComponentLayoutEffectMountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectMountStarted === 'function') { + injectedProfilingHooks.markComponentLayoutEffectMountStarted(fiber); } - function markPassiveEffectsStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markPassiveEffectsStarted === "function" - ) { - injectedProfilingHooks.markPassiveEffectsStarted(lanes); - } - } + } +} +function markComponentLayoutEffectMountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectMountStopped === 'function') { + injectedProfilingHooks.markComponentLayoutEffectMountStopped(); } - function markPassiveEffectsStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markPassiveEffectsStopped === "function" - ) { - injectedProfilingHooks.markPassiveEffectsStopped(); - } - } + } +} +function markComponentLayoutEffectUnmountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStarted === 'function') { + injectedProfilingHooks.markComponentLayoutEffectUnmountStarted(fiber); } - function markRenderStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderStarted === "function" - ) { - injectedProfilingHooks.markRenderStarted(lanes); - } - } + } +} +function markComponentLayoutEffectUnmountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStopped === 'function') { + injectedProfilingHooks.markComponentLayoutEffectUnmountStopped(); } - function markRenderYielded() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderYielded === "function" - ) { - injectedProfilingHooks.markRenderYielded(); - } - } + } +} +function markComponentErrored(fiber, thrownValue, lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentErrored === 'function') { + injectedProfilingHooks.markComponentErrored(fiber, thrownValue, lanes); } - function markRenderStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderStopped === "function" - ) { - injectedProfilingHooks.markRenderStopped(); - } - } + } +} +function markComponentSuspended(fiber, wakeable, lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentSuspended === 'function') { + injectedProfilingHooks.markComponentSuspended(fiber, wakeable, lanes); } - function markRenderScheduled(lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderScheduled === "function" - ) { - injectedProfilingHooks.markRenderScheduled(lane); - } - } + } +} +function markLayoutEffectsStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markLayoutEffectsStarted === 'function') { + injectedProfilingHooks.markLayoutEffectsStarted(lanes); } - function markForceUpdateScheduled(fiber, lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markForceUpdateScheduled === "function" - ) { - injectedProfilingHooks.markForceUpdateScheduled(fiber, lane); - } - } + } +} +function markLayoutEffectsStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markLayoutEffectsStopped === 'function') { + injectedProfilingHooks.markLayoutEffectsStopped(); } - function markStateUpdateScheduled(fiber, lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markStateUpdateScheduled === "function" - ) { - injectedProfilingHooks.markStateUpdateScheduled(fiber, lane); - } - } + } +} +function markPassiveEffectsStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markPassiveEffectsStarted === 'function') { + injectedProfilingHooks.markPassiveEffectsStarted(lanes); } + } +} +function markPassiveEffectsStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markPassiveEffectsStopped === 'function') { + injectedProfilingHooks.markPassiveEffectsStopped(); + } + } +} +function markRenderStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderStarted === 'function') { + injectedProfilingHooks.markRenderStarted(lanes); + } + } +} +function markRenderYielded() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderYielded === 'function') { + injectedProfilingHooks.markRenderYielded(); + } + } +} +function markRenderStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderStopped === 'function') { + injectedProfilingHooks.markRenderStopped(); + } + } +} +function markRenderScheduled(lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderScheduled === 'function') { + injectedProfilingHooks.markRenderScheduled(lane); + } + } +} +function markForceUpdateScheduled(fiber, lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markForceUpdateScheduled === 'function') { + injectedProfilingHooks.markForceUpdateScheduled(fiber, lane); + } + } +} +function markStateUpdateScheduled(fiber, lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markStateUpdateScheduled === 'function') { + injectedProfilingHooks.markStateUpdateScheduled(fiber, lane); + } + } +} - var NoMode = - /* */ - 0; // TODO: Remove ConcurrentMode by reading from the root tag instead - - var ConcurrentMode = - /* */ - 1; - var ProfileMode = - /* */ - 2; - var StrictLegacyMode = - /* */ - 8; - var StrictEffectsMode = - /* */ - 16; - var ConcurrentUpdatesByDefaultMode = - /* */ - 32; - var NoStrictPassiveEffectsMode = - /* */ - 64; - - // TODO: This is pretty well supported by browsers. Maybe we can drop it. - var clz32 = Math.clz32 ? Math.clz32 : clz32Fallback; // Count leading zeros. - // Based on: - // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32 - - var log = Math.log; - var LN2 = Math.LN2; - - function clz32Fallback(x) { - var asUint = x >>> 0; - - if (asUint === 0) { - return 32; - } - - return (31 - ((log(asUint) / LN2) | 0)) | 0; - } - - // If those values are changed that package should be rebuilt and redeployed. - - var TotalLanes = 31; - var NoLanes = - /* */ - 0; - var NoLane = - /* */ - 0; - var SyncHydrationLane = - /* */ - 1; - var SyncLane = - /* */ - 2; - var SyncLaneIndex = 1; - var InputContinuousHydrationLane = - /* */ - 4; - var InputContinuousLane = - /* */ - 8; - var DefaultHydrationLane = - /* */ - 16; - var DefaultLane = - /* */ - 32; - var SyncUpdateLanes = SyncLane | InputContinuousLane | DefaultLane; - var TransitionHydrationLane = - /* */ - 64; - var TransitionLanes = - /* */ - 4194176; - var TransitionLane1 = - /* */ - 128; - var TransitionLane2 = - /* */ - 256; - var TransitionLane3 = - /* */ - 512; - var TransitionLane4 = - /* */ - 1024; - var TransitionLane5 = - /* */ - 2048; - var TransitionLane6 = - /* */ - 4096; - var TransitionLane7 = - /* */ - 8192; - var TransitionLane8 = - /* */ - 16384; - var TransitionLane9 = - /* */ - 32768; - var TransitionLane10 = - /* */ - 65536; - var TransitionLane11 = - /* */ - 131072; - var TransitionLane12 = - /* */ - 262144; - var TransitionLane13 = - /* */ - 524288; - var TransitionLane14 = - /* */ - 1048576; - var TransitionLane15 = - /* */ - 2097152; - var RetryLanes = - /* */ - 62914560; - var RetryLane1 = - /* */ - 4194304; - var RetryLane2 = - /* */ - 8388608; - var RetryLane3 = - /* */ - 16777216; - var RetryLane4 = - /* */ - 33554432; - var SomeRetryLane = RetryLane1; - var SelectiveHydrationLane = - /* */ - 67108864; - var NonIdleLanes = - /* */ - 134217727; - var IdleHydrationLane = - /* */ - 134217728; - var IdleLane = - /* */ - 268435456; - var OffscreenLane = - /* */ - 536870912; - var DeferredLane = - /* */ - 1073741824; // Any lane that might schedule an update. This is used to detect infinite - // update loops, so it doesn't include hydration lanes or retries. - - var UpdateLanes = - SyncLane | InputContinuousLane | DefaultLane | TransitionLanes; // This function is used for the experimental timeline (react-devtools-timeline) - // It should be kept in sync with the Lanes values above. - - function getLabelForLane(lane) { - { - if (lane & SyncHydrationLane) { - return "SyncHydrationLane"; - } - - if (lane & SyncLane) { - return "Sync"; - } - - if (lane & InputContinuousHydrationLane) { - return "InputContinuousHydration"; - } - - if (lane & InputContinuousLane) { - return "InputContinuous"; - } +var NoMode = +/* */ +0; // TODO: Remove ConcurrentMode by reading from the root tag instead + +var ConcurrentMode = +/* */ +1; +var ProfileMode = +/* */ +2; +var StrictLegacyMode = +/* */ +8; +var StrictEffectsMode = +/* */ +16; +var ConcurrentUpdatesByDefaultMode = +/* */ +32; +var NoStrictPassiveEffectsMode = +/* */ +64; + +// TODO: This is pretty well supported by browsers. Maybe we can drop it. +var clz32 = Math.clz32 ? Math.clz32 : clz32Fallback; // Count leading zeros. +// Based on: +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32 + +var log = Math.log; +var LN2 = Math.LN2; + +function clz32Fallback(x) { + var asUint = x >>> 0; + + if (asUint === 0) { + return 32; + } + + return 31 - (log(asUint) / LN2 | 0) | 0; +} - if (lane & DefaultHydrationLane) { - return "DefaultHydration"; - } +// If those values are changed that package should be rebuilt and redeployed. + +var TotalLanes = 31; +var NoLanes = +/* */ +0; +var NoLane = +/* */ +0; +var SyncHydrationLane = +/* */ +1; +var SyncLane = +/* */ +2; +var SyncLaneIndex = 1; +var InputContinuousHydrationLane = +/* */ +4; +var InputContinuousLane = +/* */ +8; +var DefaultHydrationLane = +/* */ +16; +var DefaultLane = +/* */ +32; +var SyncUpdateLanes = SyncLane | InputContinuousLane | DefaultLane ; +var TransitionHydrationLane = +/* */ +64; +var TransitionLanes = +/* */ +4194176; +var TransitionLane1 = +/* */ +128; +var TransitionLane2 = +/* */ +256; +var TransitionLane3 = +/* */ +512; +var TransitionLane4 = +/* */ +1024; +var TransitionLane5 = +/* */ +2048; +var TransitionLane6 = +/* */ +4096; +var TransitionLane7 = +/* */ +8192; +var TransitionLane8 = +/* */ +16384; +var TransitionLane9 = +/* */ +32768; +var TransitionLane10 = +/* */ +65536; +var TransitionLane11 = +/* */ +131072; +var TransitionLane12 = +/* */ +262144; +var TransitionLane13 = +/* */ +524288; +var TransitionLane14 = +/* */ +1048576; +var TransitionLane15 = +/* */ +2097152; +var RetryLanes = +/* */ +62914560; +var RetryLane1 = +/* */ +4194304; +var RetryLane2 = +/* */ +8388608; +var RetryLane3 = +/* */ +16777216; +var RetryLane4 = +/* */ +33554432; +var SomeRetryLane = RetryLane1; +var SelectiveHydrationLane = +/* */ +67108864; +var NonIdleLanes = +/* */ +134217727; +var IdleHydrationLane = +/* */ +134217728; +var IdleLane = +/* */ +268435456; +var OffscreenLane = +/* */ +536870912; +var DeferredLane = +/* */ +1073741824; // Any lane that might schedule an update. This is used to detect infinite +// update loops, so it doesn't include hydration lanes or retries. + +var UpdateLanes = SyncLane | InputContinuousLane | DefaultLane | TransitionLanes; // This function is used for the experimental timeline (react-devtools-timeline) +// It should be kept in sync with the Lanes values above. + +function getLabelForLane(lane) { + { + if (lane & SyncHydrationLane) { + return 'SyncHydrationLane'; + } + + if (lane & SyncLane) { + return 'Sync'; + } + + if (lane & InputContinuousHydrationLane) { + return 'InputContinuousHydration'; + } + + if (lane & InputContinuousLane) { + return 'InputContinuous'; + } + + if (lane & DefaultHydrationLane) { + return 'DefaultHydration'; + } + + if (lane & DefaultLane) { + return 'Default'; + } + + if (lane & TransitionHydrationLane) { + return 'TransitionHydration'; + } + + if (lane & TransitionLanes) { + return 'Transition'; + } + + if (lane & RetryLanes) { + return 'Retry'; + } + + if (lane & SelectiveHydrationLane) { + return 'SelectiveHydration'; + } - if (lane & DefaultLane) { - return "Default"; - } + if (lane & IdleHydrationLane) { + return 'IdleHydration'; + } - if (lane & TransitionHydrationLane) { - return "TransitionHydration"; - } + if (lane & IdleLane) { + return 'Idle'; + } - if (lane & TransitionLanes) { - return "Transition"; - } + if (lane & OffscreenLane) { + return 'Offscreen'; + } - if (lane & RetryLanes) { - return "Retry"; - } + if (lane & DeferredLane) { + return 'Deferred'; + } + } +} +var NoTimestamp = -1; +var nextTransitionLane = TransitionLane1; +var nextRetryLane = RetryLane1; - if (lane & SelectiveHydrationLane) { - return "SelectiveHydration"; - } +function getHighestPriorityLanes(lanes) { + { + var pendingSyncLanes = lanes & SyncUpdateLanes; - if (lane & IdleHydrationLane) { - return "IdleHydration"; - } + if (pendingSyncLanes !== 0) { + return pendingSyncLanes; + } + } - if (lane & IdleLane) { - return "Idle"; - } + switch (getHighestPriorityLane(lanes)) { + case SyncHydrationLane: + return SyncHydrationLane; - if (lane & OffscreenLane) { - return "Offscreen"; - } + case SyncLane: + return SyncLane; - if (lane & DeferredLane) { - return "Deferred"; - } - } - } - var NoTimestamp = -1; - var nextTransitionLane = TransitionLane1; - var nextRetryLane = RetryLane1; + case InputContinuousHydrationLane: + return InputContinuousHydrationLane; + + case InputContinuousLane: + return InputContinuousLane; + + case DefaultHydrationLane: + return DefaultHydrationLane; + + case DefaultLane: + return DefaultLane; + + case TransitionHydrationLane: + return TransitionHydrationLane; + + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + return lanes & TransitionLanes; + + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + return lanes & RetryLanes; + + case SelectiveHydrationLane: + return SelectiveHydrationLane; + + case IdleHydrationLane: + return IdleHydrationLane; + + case IdleLane: + return IdleLane; + + case OffscreenLane: + return OffscreenLane; + + case DeferredLane: + // This shouldn't be reachable because deferred work is always entangled + // with something else. + return NoLanes; - function getHighestPriorityLanes(lanes) { + default: { - var pendingSyncLanes = lanes & SyncUpdateLanes; + error('Should have found matching lanes. This is a bug in React.'); + } // This shouldn't be reachable, but as a fallback, return the entire bitmask. - if (pendingSyncLanes !== 0) { - return pendingSyncLanes; - } - } - switch (getHighestPriorityLane(lanes)) { - case SyncHydrationLane: - return SyncHydrationLane; + return lanes; + } +} - case SyncLane: - return SyncLane; +function getNextLanes(root, wipLanes) { + // Early bailout if there's no pending work left. + var pendingLanes = root.pendingLanes; - case InputContinuousHydrationLane: - return InputContinuousHydrationLane; + if (pendingLanes === NoLanes) { + return NoLanes; + } - case InputContinuousLane: - return InputContinuousLane; + var nextLanes = NoLanes; + var suspendedLanes = root.suspendedLanes; + var pingedLanes = root.pingedLanes; // Do not work on any idle work until all the non-idle work has finished, + // even if the work is suspended. - case DefaultHydrationLane: - return DefaultHydrationLane; + var nonIdlePendingLanes = pendingLanes & NonIdleLanes; - case DefaultLane: - return DefaultLane; + if (nonIdlePendingLanes !== NoLanes) { + var nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes; - case TransitionHydrationLane: - return TransitionHydrationLane; + if (nonIdleUnblockedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes); + } else { + var nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes; - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - return lanes & TransitionLanes; + if (nonIdlePingedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(nonIdlePingedLanes); + } + } + } else { + // The only remaining work is Idle. + var unblockedLanes = pendingLanes & ~suspendedLanes; - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - return lanes & RetryLanes; + if (unblockedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(unblockedLanes); + } else { + if (pingedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(pingedLanes); + } + } + } - case SelectiveHydrationLane: - return SelectiveHydrationLane; + if (nextLanes === NoLanes) { + // This should only be reachable if we're suspended + // TODO: Consider warning in this path if a fallback timer is not scheduled. + return NoLanes; + } // If we're already in the middle of a render, switching lanes will interrupt + // it and we'll lose our progress. We should only do this if the new lanes are + // higher priority. - case IdleHydrationLane: - return IdleHydrationLane; - case IdleLane: - return IdleLane; + if (wipLanes !== NoLanes && wipLanes !== nextLanes && // If we already suspended with a delay, then interrupting is fine. Don't + // bother waiting until the root is complete. + (wipLanes & suspendedLanes) === NoLanes) { + var nextLane = getHighestPriorityLane(nextLanes); + var wipLane = getHighestPriorityLane(wipLanes); - case OffscreenLane: - return OffscreenLane; + if ( // Tests whether the next lane is equal or lower priority than the wip + // one. This works because the bits decrease in priority as you go left. + nextLane >= wipLane || // Default priority updates should not interrupt transition updates. The + // only difference between default updates and transition updates is that + // default updates do not support refresh transitions. + nextLane === DefaultLane && (wipLane & TransitionLanes) !== NoLanes) { + // Keep working on the existing in-progress tree. Do not interrupt. + return wipLanes; + } + } - case DeferredLane: - // This shouldn't be reachable because deferred work is always entangled - // with something else. - return NoLanes; + return nextLanes; +} +function getEntangledLanes(root, renderLanes) { + var entangledLanes = renderLanes; + + if ((root.current.mode & ConcurrentUpdatesByDefaultMode) !== NoMode) ; else if ((entangledLanes & InputContinuousLane) !== NoLanes) { + // When updates are sync by default, we entangle continuous priority updates + // and default updates, so they render in the same batch. The only reason + // they use separate lanes is because continuous updates should interrupt + // transitions, but default updates should not. + entangledLanes |= entangledLanes & DefaultLane; + } // Check for entangled lanes and add them to the batch. + // + // A lane is said to be entangled with another when it's not allowed to render + // in a batch that does not also include the other lane. Typically we do this + // when multiple updates have the same source, and we only want to respond to + // the most recent event from that source. + // + // Note that we apply entanglements *after* checking for partial work above. + // This means that if a lane is entangled during an interleaved event while + // it's already rendering, we won't interrupt it. This is intentional, since + // entanglement is usually "best effort": we'll try our best to render the + // lanes in the same batch, but it's not worth throwing out partially + // completed work in order to do it. + // TODO: Reconsider this. The counter-argument is that the partial work + // represents an intermediate state, which we don't want to show to the user. + // And by spending extra time finishing it, we're increasing the amount of + // time it takes to show the final state, which is what they are actually + // waiting for. + // + // For those exceptions where entanglement is semantically important, + // we should ensure that there is no partial work at the + // time we apply the entanglement. + + + var allEntangledLanes = root.entangledLanes; + + if (allEntangledLanes !== NoLanes) { + var entanglements = root.entanglements; + var lanes = entangledLanes & allEntangledLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + entangledLanes |= entanglements[index]; + lanes &= ~lane; + } + } + + return entangledLanes; +} - default: - { - error("Should have found matching lanes. This is a bug in React."); - } // This shouldn't be reachable, but as a fallback, return the entire bitmask. +function computeExpirationTime(lane, currentTime) { + switch (lane) { + case SyncHydrationLane: + case SyncLane: + case InputContinuousHydrationLane: + case InputContinuousLane: + // User interactions should expire slightly more quickly. + // + // NOTE: This is set to the corresponding constant as in Scheduler.js. + // When we made it larger, a product metric in www regressed, suggesting + // there's a user interaction that's being starved by a series of + // synchronous updates. If that theory is correct, the proper solution is + // to fix the starvation. However, this scenario supports the idea that + // expiration times are an important safeguard when starvation + // does happen. + return currentTime + syncLaneExpirationMs; + + case DefaultHydrationLane: + case DefaultLane: + case TransitionHydrationLane: + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + return currentTime + transitionLaneExpirationMs; + + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + // TODO: Retries should be allowed to expire if they are CPU bound for + // too long, but when I made this change it caused a spike in browser + // crashes. There must be some other underlying bug; not super urgent but + // ideally should figure out why and fix it. Unfortunately we don't have + // a repro for the crashes, only detected via production metrics. + return NoTimestamp; + + case SelectiveHydrationLane: + case IdleHydrationLane: + case IdleLane: + case OffscreenLane: + case DeferredLane: + // Anything idle priority or lower should never expire. + return NoTimestamp; + + default: + { + error('Should have found matching lanes. This is a bug in React.'); + } + + return NoTimestamp; + } +} - return lanes; - } - } +function markStarvedLanesAsExpired(root, currentTime) { + // TODO: This gets called every time we yield. We can optimize by storing + // the earliest expiration time on the root. Then use that to quickly bail out + // of this function. + var pendingLanes = root.pendingLanes; + var suspendedLanes = root.suspendedLanes; + var pingedLanes = root.pingedLanes; + var expirationTimes = root.expirationTimes; // Iterate through the pending lanes and check if we've reached their + // expiration time. If so, we'll assume the update is being starved and mark + // it as expired to force it to finish. + // TODO: We should be able to replace this with upgradePendingLanesToSync + // + // We exclude retry lanes because those must always be time sliced, in order + // to unwrap uncached promises. + // TODO: Write a test for this + + var lanes = pendingLanes & ~RetryLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + var expirationTime = expirationTimes[index]; + + if (expirationTime === NoTimestamp) { + // Found a pending lane with no expiration time. If it's not suspended, or + // if it's pinged, assume it's CPU-bound. Compute a new expiration time + // using the current time. + if ((lane & suspendedLanes) === NoLanes || (lane & pingedLanes) !== NoLanes) { + // Assumes timestamps are monotonically increasing. + expirationTimes[index] = computeExpirationTime(lane, currentTime); + } + } else if (expirationTime <= currentTime) { + // This lane expired + root.expiredLanes |= lane; + } + + lanes &= ~lane; + } +} // This returns the highest priority pending lanes regardless of whether they +function getLanesToRetrySynchronouslyOnError(root, originallyAttemptedLanes) { + if (root.errorRecoveryDisabledLanes & originallyAttemptedLanes) { + // The error recovery mechanism is disabled until these lanes are cleared. + return NoLanes; + } + + var everythingButOffscreen = root.pendingLanes & ~OffscreenLane; + + if (everythingButOffscreen !== NoLanes) { + return everythingButOffscreen; + } + + if (everythingButOffscreen & OffscreenLane) { + return OffscreenLane; + } + + return NoLanes; +} +function includesSyncLane(lanes) { + return (lanes & (SyncLane | SyncHydrationLane)) !== NoLanes; +} +function includesNonIdleWork(lanes) { + return (lanes & NonIdleLanes) !== NoLanes; +} +function includesOnlyRetries(lanes) { + return (lanes & RetryLanes) === lanes; +} +function includesOnlyNonUrgentLanes(lanes) { + // TODO: Should hydration lanes be included here? This function is only + // used in `updateDeferredValueImpl`. + var UrgentLanes = SyncLane | InputContinuousLane | DefaultLane; + return (lanes & UrgentLanes) === NoLanes; +} +function includesOnlyTransitions(lanes) { + return (lanes & TransitionLanes) === lanes; +} +function includesBlockingLane(root, lanes) { + if ((root.current.mode & ConcurrentUpdatesByDefaultMode) !== NoMode) { + // Concurrent updates by default always use time slicing. + return false; + } + + var SyncDefaultLanes = InputContinuousHydrationLane | InputContinuousLane | DefaultHydrationLane | DefaultLane; + return (lanes & SyncDefaultLanes) !== NoLanes; +} +function includesExpiredLane(root, lanes) { + // This is a separate check from includesBlockingLane because a lane can + // expire after a render has already started. + return (lanes & root.expiredLanes) !== NoLanes; +} +function isTransitionLane(lane) { + return (lane & TransitionLanes) !== NoLanes; +} +function claimNextTransitionLane() { + // Cycle through the lanes, assigning each new transition to the next lane. + // In most cases, this means every transition gets its own lane, until we + // run out of lanes and cycle back to the beginning. + var lane = nextTransitionLane; + nextTransitionLane <<= 1; + + if ((nextTransitionLane & TransitionLanes) === NoLanes) { + nextTransitionLane = TransitionLane1; + } + + return lane; +} +function claimNextRetryLane() { + var lane = nextRetryLane; + nextRetryLane <<= 1; - function getNextLanes(root, wipLanes) { - // Early bailout if there's no pending work left. - var pendingLanes = root.pendingLanes; + if ((nextRetryLane & RetryLanes) === NoLanes) { + nextRetryLane = RetryLane1; + } - if (pendingLanes === NoLanes) { - return NoLanes; - } + return lane; +} +function getHighestPriorityLane(lanes) { + return lanes & -lanes; +} +function pickArbitraryLane(lanes) { + // This wrapper function gets inlined. Only exists so to communicate that it + // doesn't matter which bit is selected; you can pick any bit without + // affecting the algorithms where its used. Here I'm using + // getHighestPriorityLane because it requires the fewest operations. + return getHighestPriorityLane(lanes); +} - var nextLanes = NoLanes; - var suspendedLanes = root.suspendedLanes; - var pingedLanes = root.pingedLanes; // Do not work on any idle work until all the non-idle work has finished, - // even if the work is suspended. +function pickArbitraryLaneIndex(lanes) { + return 31 - clz32(lanes); +} - var nonIdlePendingLanes = pendingLanes & NonIdleLanes; +function laneToIndex(lane) { + return pickArbitraryLaneIndex(lane); +} - if (nonIdlePendingLanes !== NoLanes) { - var nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes; +function includesSomeLane(a, b) { + return (a & b) !== NoLanes; +} +function isSubsetOfLanes(set, subset) { + return (set & subset) === subset; +} +function mergeLanes(a, b) { + return a | b; +} +function removeLanes(set, subset) { + return set & ~subset; +} +function intersectLanes(a, b) { + return a & b; +} // Seems redundant, but it changes the type from a single lane (used for +// updates) to a group of lanes (used for flushing work). - if (nonIdleUnblockedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes); - } else { - var nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes; +function laneToLanes(lane) { + return lane; +} +function createLaneMap(initial) { + // Intentionally pushing one by one. + // https://v8.dev/blog/elements-kinds#avoid-creating-holes + var laneMap = []; - if (nonIdlePingedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(nonIdlePingedLanes); - } - } - } else { - // The only remaining work is Idle. - var unblockedLanes = pendingLanes & ~suspendedLanes; + for (var i = 0; i < TotalLanes; i++) { + laneMap.push(initial); + } - if (unblockedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(unblockedLanes); - } else { - if (pingedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(pingedLanes); - } - } - } + return laneMap; +} +function markRootUpdated$1(root, updateLane) { + root.pendingLanes |= updateLane; // If there are any suspended transitions, it's possible this new update + // could unblock them. Clear the suspended lanes so that we can try rendering + // them again. + // + // TODO: We really only need to unsuspend only lanes that are in the + // `subtreeLanes` of the updated fiber, or the update lanes of the return + // path. This would exclude suspended updates in an unrelated sibling tree, + // since there's no way for this update to unblock it. + // + // We don't do this if the incoming update is idle, because we never process + // idle updates until after all the regular updates have finished; there's no + // way it could unblock a transition. + + if (updateLane !== IdleLane) { + root.suspendedLanes = NoLanes; + root.pingedLanes = NoLanes; + } +} +function markRootSuspended$1(root, suspendedLanes, spawnedLane) { + root.suspendedLanes |= suspendedLanes; + root.pingedLanes &= ~suspendedLanes; // The suspended lanes are no longer CPU-bound. Clear their expiration times. + + var expirationTimes = root.expirationTimes; + var lanes = suspendedLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + expirationTimes[index] = NoTimestamp; + lanes &= ~lane; + } + + if (spawnedLane !== NoLane) { + markSpawnedDeferredLane(root, spawnedLane, suspendedLanes); + } +} +function markRootPinged$1(root, pingedLanes) { + root.pingedLanes |= root.suspendedLanes & pingedLanes; +} +function markRootFinished(root, remainingLanes, spawnedLane) { + var noLongerPendingLanes = root.pendingLanes & ~remainingLanes; + root.pendingLanes = remainingLanes; // Let's try everything again - if (nextLanes === NoLanes) { - // This should only be reachable if we're suspended - // TODO: Consider warning in this path if a fallback timer is not scheduled. - return NoLanes; - } // If we're already in the middle of a render, switching lanes will interrupt - // it and we'll lose our progress. We should only do this if the new lanes are - // higher priority. - - if ( - wipLanes !== NoLanes && - wipLanes !== nextLanes && // If we already suspended with a delay, then interrupting is fine. Don't - // bother waiting until the root is complete. - (wipLanes & suspendedLanes) === NoLanes - ) { - var nextLane = getHighestPriorityLane(nextLanes); - var wipLane = getHighestPriorityLane(wipLanes); - - if ( - // Tests whether the next lane is equal or lower priority than the wip - // one. This works because the bits decrease in priority as you go left. - nextLane >= wipLane || // Default priority updates should not interrupt transition updates. The - // only difference between default updates and transition updates is that - // default updates do not support refresh transitions. - (nextLane === DefaultLane && (wipLane & TransitionLanes) !== NoLanes) - ) { - // Keep working on the existing in-progress tree. Do not interrupt. - return wipLanes; - } - } + root.suspendedLanes = NoLanes; + root.pingedLanes = NoLanes; + root.expiredLanes &= remainingLanes; + root.entangledLanes &= remainingLanes; + root.errorRecoveryDisabledLanes &= remainingLanes; + root.shellSuspendCounter = 0; + var entanglements = root.entanglements; + var expirationTimes = root.expirationTimes; + var hiddenUpdates = root.hiddenUpdates; // Clear the lanes that no longer have pending work - return nextLanes; - } - function getEntangledLanes(root, renderLanes) { - var entangledLanes = renderLanes; + var lanes = noLongerPendingLanes; - if ((root.current.mode & ConcurrentUpdatesByDefaultMode) !== NoMode); - else if ((entangledLanes & InputContinuousLane) !== NoLanes) { - // When updates are sync by default, we entangle continuous priority updates - // and default updates, so they render in the same batch. The only reason - // they use separate lanes is because continuous updates should interrupt - // transitions, but default updates should not. - entangledLanes |= entangledLanes & DefaultLane; - } // Check for entangled lanes and add them to the batch. - // - // A lane is said to be entangled with another when it's not allowed to render - // in a batch that does not also include the other lane. Typically we do this - // when multiple updates have the same source, and we only want to respond to - // the most recent event from that source. - // - // Note that we apply entanglements *after* checking for partial work above. - // This means that if a lane is entangled during an interleaved event while - // it's already rendering, we won't interrupt it. This is intentional, since - // entanglement is usually "best effort": we'll try our best to render the - // lanes in the same batch, but it's not worth throwing out partially - // completed work in order to do it. - // TODO: Reconsider this. The counter-argument is that the partial work - // represents an intermediate state, which we don't want to show to the user. - // And by spending extra time finishing it, we're increasing the amount of - // time it takes to show the final state, which is what they are actually - // waiting for. - // - // For those exceptions where entanglement is semantically important, - // we should ensure that there is no partial work at the - // time we apply the entanglement. + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + entanglements[index] = NoLanes; + expirationTimes[index] = NoTimestamp; + var hiddenUpdatesForLane = hiddenUpdates[index]; - var allEntangledLanes = root.entangledLanes; + if (hiddenUpdatesForLane !== null) { + hiddenUpdates[index] = null; // "Hidden" updates are updates that were made to a hidden component. They + // have special logic associated with them because they may be entangled + // with updates that occur outside that tree. But once the outer tree + // commits, they behave like regular updates. - if (allEntangledLanes !== NoLanes) { - var entanglements = root.entanglements; - var lanes = entangledLanes & allEntangledLanes; + for (var i = 0; i < hiddenUpdatesForLane.length; i++) { + var update = hiddenUpdatesForLane[i]; - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - entangledLanes |= entanglements[index]; - lanes &= ~lane; + if (update !== null) { + update.lane &= ~OffscreenLane; } } - - return entangledLanes; } - function computeExpirationTime(lane, currentTime) { - switch (lane) { - case SyncHydrationLane: - case SyncLane: - case InputContinuousHydrationLane: - case InputContinuousLane: - // User interactions should expire slightly more quickly. - // - // NOTE: This is set to the corresponding constant as in Scheduler.js. - // When we made it larger, a product metric in www regressed, suggesting - // there's a user interaction that's being starved by a series of - // synchronous updates. If that theory is correct, the proper solution is - // to fix the starvation. However, this scenario supports the idea that - // expiration times are an important safeguard when starvation - // does happen. - return currentTime + syncLaneExpirationMs; - - case DefaultHydrationLane: - case DefaultLane: - case TransitionHydrationLane: - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - return currentTime + transitionLaneExpirationMs; - - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - // TODO: Retries should be allowed to expire if they are CPU bound for - // too long, but when I made this change it caused a spike in browser - // crashes. There must be some other underlying bug; not super urgent but - // ideally should figure out why and fix it. Unfortunately we don't have - // a repro for the crashes, only detected via production metrics. - return NoTimestamp; - - case SelectiveHydrationLane: - case IdleHydrationLane: - case IdleLane: - case OffscreenLane: - case DeferredLane: - // Anything idle priority or lower should never expire. - return NoTimestamp; - - default: - { - error("Should have found matching lanes. This is a bug in React."); - } + lanes &= ~lane; + } - return NoTimestamp; - } - } + if (spawnedLane !== NoLane) { + markSpawnedDeferredLane(root, spawnedLane, // This render finished successfully without suspending, so we don't need + // to entangle the spawned task with the parent task. + NoLanes); + } +} - function markStarvedLanesAsExpired(root, currentTime) { - // TODO: This gets called every time we yield. We can optimize by storing - // the earliest expiration time on the root. Then use that to quickly bail out - // of this function. - var pendingLanes = root.pendingLanes; - var suspendedLanes = root.suspendedLanes; - var pingedLanes = root.pingedLanes; - var expirationTimes = root.expirationTimes; // Iterate through the pending lanes and check if we've reached their - // expiration time. If so, we'll assume the update is being starved and mark - // it as expired to force it to finish. - // TODO: We should be able to replace this with upgradePendingLanesToSync - // - // We exclude retry lanes because those must always be time sliced, in order - // to unwrap uncached promises. - // TODO: Write a test for this - - var lanes = pendingLanes & ~RetryLanes; - - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - var expirationTime = expirationTimes[index]; - - if (expirationTime === NoTimestamp) { - // Found a pending lane with no expiration time. If it's not suspended, or - // if it's pinged, assume it's CPU-bound. Compute a new expiration time - // using the current time. - if ( - (lane & suspendedLanes) === NoLanes || - (lane & pingedLanes) !== NoLanes - ) { - // Assumes timestamps are monotonically increasing. - expirationTimes[index] = computeExpirationTime(lane, currentTime); - } - } else if (expirationTime <= currentTime) { - // This lane expired - root.expiredLanes |= lane; - } +function markSpawnedDeferredLane(root, spawnedLane, entangledLanes) { + // This render spawned a deferred task. Mark it as pending. + root.pendingLanes |= spawnedLane; + root.suspendedLanes &= ~spawnedLane; // Entangle the spawned lane with the DeferredLane bit so that we know it + // was the result of another render. This lets us avoid a useDeferredValue + // waterfall — only the first level will defer. + + var spawnedLaneIndex = laneToIndex(spawnedLane); + root.entangledLanes |= spawnedLane; + root.entanglements[spawnedLaneIndex] |= DeferredLane | // If the parent render task suspended, we must also entangle those lanes + // with the spawned task, so that the deferred task includes all the same + // updates that the parent task did. We can exclude any lane that is not + // used for updates (e.g. Offscreen). + entangledLanes & UpdateLanes; +} - lanes &= ~lane; - } - } // This returns the highest priority pending lanes regardless of whether they - function getLanesToRetrySynchronouslyOnError( - root, - originallyAttemptedLanes - ) { - if (root.errorRecoveryDisabledLanes & originallyAttemptedLanes) { - // The error recovery mechanism is disabled until these lanes are cleared. - return NoLanes; - } +function markRootEntangled(root, entangledLanes) { + // In addition to entangling each of the given lanes with each other, we also + // have to consider _transitive_ entanglements. For each lane that is already + // entangled with *any* of the given lanes, that lane is now transitively + // entangled with *all* the given lanes. + // + // Translated: If C is entangled with A, then entangling A with B also + // entangles C with B. + // + // If this is hard to grasp, it might help to intentionally break this + // function and look at the tests that fail in ReactTransition-test.js. Try + // commenting out one of the conditions below. + var rootEntangledLanes = root.entangledLanes |= entangledLanes; + var entanglements = root.entanglements; + var lanes = rootEntangledLanes; + + while (lanes) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + + if ( // Is this one of the newly entangled lanes? + lane & entangledLanes | // Is this lane transitively entangled with the newly entangled lanes? + entanglements[index] & entangledLanes) { + entanglements[index] |= entangledLanes; + } + + lanes &= ~lane; + } +} +function upgradePendingLaneToSync(root, lane) { + // Since we're upgrading the priority of the given lane, there is now pending + // sync work. + root.pendingLanes |= SyncLane; // Entangle the sync lane with the lane we're upgrading. This means SyncLane + // will not be allowed to finish without also finishing the given lane. + + root.entangledLanes |= SyncLane; + root.entanglements[SyncLaneIndex] |= lane; +} +function markHiddenUpdate(root, update, lane) { + var index = laneToIndex(lane); + var hiddenUpdates = root.hiddenUpdates; + var hiddenUpdatesForLane = hiddenUpdates[index]; + + if (hiddenUpdatesForLane === null) { + hiddenUpdates[index] = [update]; + } else { + hiddenUpdatesForLane.push(update); + } + + update.lane = lane | OffscreenLane; +} +function getBumpedLaneForHydration(root, renderLanes) { + var renderLane = getHighestPriorityLane(renderLanes); + var lane; + + if ((renderLane & SyncUpdateLanes) !== NoLane) { + lane = SyncHydrationLane; + } else { + switch (renderLane) { + case SyncLane: + lane = SyncHydrationLane; + break; + + case InputContinuousLane: + lane = InputContinuousHydrationLane; + break; + + case DefaultLane: + lane = DefaultHydrationLane; + break; + + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + lane = TransitionHydrationLane; + break; + + case IdleLane: + lane = IdleHydrationLane; + break; + + default: + // Everything else is already either a hydration lane, or shouldn't + // be retried at a hydration lane. + lane = NoLane; + break; + } + } // Check if the lane we chose is suspended. If so, that indicates that we + // already attempted and failed to hydrate at that level. Also check if we're + // already rendering that lane, which is rare but could happen. + + + if ((lane & (root.suspendedLanes | renderLanes)) !== NoLane) { + // Give up trying to hydrate and fall back to client render. + return NoLane; + } + + return lane; +} +function getTransitionsForLanes(root, lanes) { + { + return null; + } +} - var everythingButOffscreen = root.pendingLanes & ~OffscreenLane; +var NoEventPriority = NoLane; +var DiscreteEventPriority = SyncLane; +var ContinuousEventPriority = InputContinuousLane; +var DefaultEventPriority = DefaultLane; +var IdleEventPriority = IdleLane; +function higherEventPriority(a, b) { + return a !== 0 && a < b ? a : b; +} +function lowerEventPriority(a, b) { + return a === 0 || a > b ? a : b; +} +function isHigherEventPriority(a, b) { + return a !== 0 && a < b; +} +function eventPriorityToLane(updatePriority) { + return updatePriority; +} +function lanesToEventPriority(lanes) { + var lane = getHighestPriorityLane(lanes); - if (everythingButOffscreen !== NoLanes) { - return everythingButOffscreen; - } + if (!isHigherEventPriority(DiscreteEventPriority, lane)) { + return DiscreteEventPriority; + } - if (everythingButOffscreen & OffscreenLane) { - return OffscreenLane; - } + if (!isHigherEventPriority(ContinuousEventPriority, lane)) { + return ContinuousEventPriority; + } - return NoLanes; - } - function includesSyncLane(lanes) { - return (lanes & (SyncLane | SyncHydrationLane)) !== NoLanes; - } - function includesNonIdleWork(lanes) { - return (lanes & NonIdleLanes) !== NoLanes; - } - function includesOnlyRetries(lanes) { - return (lanes & RetryLanes) === lanes; - } - function includesOnlyNonUrgentLanes(lanes) { - // TODO: Should hydration lanes be included here? This function is only - // used in `updateDeferredValueImpl`. - var UrgentLanes = SyncLane | InputContinuousLane | DefaultLane; - return (lanes & UrgentLanes) === NoLanes; - } - function includesOnlyTransitions(lanes) { - return (lanes & TransitionLanes) === lanes; - } - function includesBlockingLane(root, lanes) { - if ((root.current.mode & ConcurrentUpdatesByDefaultMode) !== NoMode) { - // Concurrent updates by default always use time slicing. - return false; - } + if (includesNonIdleWork(lane)) { + return DefaultEventPriority; + } - var SyncDefaultLanes = - InputContinuousHydrationLane | - InputContinuousLane | - DefaultHydrationLane | - DefaultLane; - return (lanes & SyncDefaultLanes) !== NoLanes; - } - function includesExpiredLane(root, lanes) { - // This is a separate check from includesBlockingLane because a lane can - // expire after a render has already started. - return (lanes & root.expiredLanes) !== NoLanes; - } - function isTransitionLane(lane) { - return (lane & TransitionLanes) !== NoLanes; - } - function claimNextTransitionLane() { - // Cycle through the lanes, assigning each new transition to the next lane. - // In most cases, this means every transition gets its own lane, until we - // run out of lanes and cycle back to the beginning. - var lane = nextTransitionLane; - nextTransitionLane <<= 1; + return IdleEventPriority; +} - if ((nextTransitionLane & TransitionLanes) === NoLanes) { - nextTransitionLane = TransitionLane1; - } +// Renderers that don't support hydration +// can re-export everything from this module. +function shim$1() { + throw new Error('The current renderer does not support hydration. ' + 'This error is likely caused by a bug in React. ' + 'Please file an issue.'); +} // Hydration (when unsupported) + + +var supportsHydration = false; +var isSuspenseInstancePending = shim$1; +var isSuspenseInstanceFallback = shim$1; +var getSuspenseInstanceFallbackErrorDetails = shim$1; +var registerSuspenseInstanceRetry = shim$1; +var clearSuspenseBoundary = shim$1; +var clearSuspenseBoundaryFromContainer = shim$1; + +// Renderers that don't support hydration +// can re-export everything from this module. +function shim() { + throw new Error('The current renderer does not support Resources. ' + 'This error is likely caused by a bug in React. ' + 'Please file an issue.'); +} // Resources (when unsupported) +var suspendResource = shim; + +var NO_CONTEXT = {}; +var nodeToInstanceMap = new WeakMap(); + +{ + Object.freeze(NO_CONTEXT); +} - return lane; - } - function claimNextRetryLane() { - var lane = nextRetryLane; - nextRetryLane <<= 1; +function getPublicInstance(inst) { + switch (inst.tag) { + case 'INSTANCE': + var createNodeMock = inst.rootContainerInstance.createNodeMock; + var mockNode = createNodeMock({ + type: inst.type, + props: inst.props + }); - if ((nextRetryLane & RetryLanes) === NoLanes) { - nextRetryLane = RetryLane1; + if (typeof mockNode === 'object' && mockNode !== null) { + nodeToInstanceMap.set(mockNode, inst); } - return lane; - } - function getHighestPriorityLane(lanes) { - return lanes & -lanes; - } - function pickArbitraryLane(lanes) { - // This wrapper function gets inlined. Only exists so to communicate that it - // doesn't matter which bit is selected; you can pick any bit without - // affecting the algorithms where its used. Here I'm using - // getHighestPriorityLane because it requires the fewest operations. - return getHighestPriorityLane(lanes); - } - - function pickArbitraryLaneIndex(lanes) { - return 31 - clz32(lanes); - } - - function laneToIndex(lane) { - return pickArbitraryLaneIndex(lane); - } + return mockNode; - function includesSomeLane(a, b) { - return (a & b) !== NoLanes; - } - function isSubsetOfLanes(set, subset) { - return (set & subset) === subset; - } - function mergeLanes(a, b) { - return a | b; - } - function removeLanes(set, subset) { - return set & ~subset; + default: + return inst; + } +} +function appendChild(parentInstance, child) { + { + if (!isArray(parentInstance.children)) { + error('An invalid container has been provided. ' + 'This may indicate that another renderer is being used in addition to the test renderer. ' + '(For example, ReactDOM.createPortal inside of a ReactTestRenderer tree.) ' + 'This is not supported.'); } - function intersectLanes(a, b) { - return a & b; - } // Seems redundant, but it changes the type from a single lane (used for - // updates) to a group of lanes (used for flushing work). + } - function laneToLanes(lane) { - return lane; - } - function createLaneMap(initial) { - // Intentionally pushing one by one. - // https://v8.dev/blog/elements-kinds#avoid-creating-holes - var laneMap = []; + var index = parentInstance.children.indexOf(child); - for (var i = 0; i < TotalLanes; i++) { - laneMap.push(initial); - } + if (index !== -1) { + parentInstance.children.splice(index, 1); + } - return laneMap; - } - function markRootUpdated$1(root, updateLane) { - root.pendingLanes |= updateLane; // If there are any suspended transitions, it's possible this new update - // could unblock them. Clear the suspended lanes so that we can try rendering - // them again. - // - // TODO: We really only need to unsuspend only lanes that are in the - // `subtreeLanes` of the updated fiber, or the update lanes of the return - // path. This would exclude suspended updates in an unrelated sibling tree, - // since there's no way for this update to unblock it. - // - // We don't do this if the incoming update is idle, because we never process - // idle updates until after all the regular updates have finished; there's no - // way it could unblock a transition. + parentInstance.children.push(child); +} +function insertBefore(parentInstance, child, beforeChild) { + var index = parentInstance.children.indexOf(child); - if (updateLane !== IdleLane) { - root.suspendedLanes = NoLanes; - root.pingedLanes = NoLanes; - } - } - function markRootSuspended$1(root, suspendedLanes, spawnedLane) { - root.suspendedLanes |= suspendedLanes; - root.pingedLanes &= ~suspendedLanes; // The suspended lanes are no longer CPU-bound. Clear their expiration times. + if (index !== -1) { + parentInstance.children.splice(index, 1); + } - var expirationTimes = root.expirationTimes; - var lanes = suspendedLanes; + var beforeIndex = parentInstance.children.indexOf(beforeChild); + parentInstance.children.splice(beforeIndex, 0, child); +} +function removeChild(parentInstance, child) { + var index = parentInstance.children.indexOf(child); + parentInstance.children.splice(index, 1); +} +function clearContainer(container) { + container.children.splice(0); +} +function getRootHostContext(rootContainerInstance) { + return NO_CONTEXT; +} +function getChildHostContext(parentHostContext, type) { + return NO_CONTEXT; +} +function createInstance(type, props, rootContainerInstance, hostContext, internalInstanceHandle) { + return { + type: type, + props: props, + isHidden: false, + children: [], + internalInstanceHandle: internalInstanceHandle, + rootContainerInstance: rootContainerInstance, + tag: 'INSTANCE' + }; +} +function appendInitialChild(parentInstance, child) { + var index = parentInstance.children.indexOf(child); - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - expirationTimes[index] = NoTimestamp; - lanes &= ~lane; - } + if (index !== -1) { + parentInstance.children.splice(index, 1); + } - if (spawnedLane !== NoLane) { - markSpawnedDeferredLane(root, spawnedLane, suspendedLanes); - } - } - function markRootPinged$1(root, pingedLanes) { - root.pingedLanes |= root.suspendedLanes & pingedLanes; - } - function markRootFinished(root, remainingLanes, spawnedLane) { - var noLongerPendingLanes = root.pendingLanes & ~remainingLanes; - root.pendingLanes = remainingLanes; // Let's try everything again + parentInstance.children.push(child); +} +function shouldSetTextContent(type, props) { + return false; +} +function createTextInstance(text, rootContainerInstance, hostContext, internalInstanceHandle) { + return { + text: text, + isHidden: false, + tag: 'TEXT' + }; +} +var currentUpdatePriority = NoEventPriority; +function setCurrentUpdatePriority(newPriority) { + currentUpdatePriority = newPriority; +} +function getCurrentUpdatePriority() { + return currentUpdatePriority; +} +function resolveUpdatePriority() { + if (currentUpdatePriority !== NoEventPriority) { + return currentUpdatePriority; + } - root.suspendedLanes = NoLanes; - root.pingedLanes = NoLanes; - root.expiredLanes &= remainingLanes; - root.entangledLanes &= remainingLanes; - root.errorRecoveryDisabledLanes &= remainingLanes; - root.shellSuspendCounter = 0; - var entanglements = root.entanglements; - var expirationTimes = root.expirationTimes; - var hiddenUpdates = root.hiddenUpdates; // Clear the lanes that no longer have pending work + return DefaultEventPriority; +} +function shouldAttemptEagerTransition() { + return false; +} +var scheduleTimeout = setTimeout; +var cancelTimeout = clearTimeout; +var noTimeout = -1; // ------------------- +function commitUpdate(instance, updatePayload, type, oldProps, newProps, internalInstanceHandle) { + instance.type = type; + instance.props = newProps; +} +function commitMount(instance, type, newProps, internalInstanceHandle) {// noop +} +function commitTextUpdate(textInstance, oldText, newText) { + textInstance.text = newText; +} +function resetTextContent(testElement) {// noop +} +var appendChildToContainer = appendChild; +var insertInContainerBefore = insertBefore; +var removeChildFromContainer = removeChild; +function hideInstance(instance) { + instance.isHidden = true; +} +function hideTextInstance(textInstance) { + textInstance.isHidden = true; +} +function unhideInstance(instance, props) { + instance.isHidden = false; +} +function unhideTextInstance(textInstance, text) { + textInstance.isHidden = false; +} +function preloadInstance(type, props) { + // Return true to indicate it's already loaded + return true; +} +function waitForCommitToBeReady() { + return null; +} +var NotPendingTransition = null; - var lanes = noLongerPendingLanes; +var valueStack = []; +var fiberStack; - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - entanglements[index] = NoLanes; - expirationTimes[index] = NoTimestamp; - var hiddenUpdatesForLane = hiddenUpdates[index]; +{ + fiberStack = []; +} - if (hiddenUpdatesForLane !== null) { - hiddenUpdates[index] = null; // "Hidden" updates are updates that were made to a hidden component. They - // have special logic associated with them because they may be entangled - // with updates that occur outside that tree. But once the outer tree - // commits, they behave like regular updates. +var index = -1; - for (var i = 0; i < hiddenUpdatesForLane.length; i++) { - var update = hiddenUpdatesForLane[i]; +function createCursor(defaultValue) { + return { + current: defaultValue + }; +} - if (update !== null) { - update.lane &= ~OffscreenLane; - } - } - } +function pop(cursor, fiber) { + if (index < 0) { + { + error('Unexpected pop.'); + } - lanes &= ~lane; - } + return; + } - if (spawnedLane !== NoLane) { - markSpawnedDeferredLane( - root, - spawnedLane, // This render finished successfully without suspending, so we don't need - // to entangle the spawned task with the parent task. - NoLanes - ); - } + { + if (fiber !== fiberStack[index]) { + error('Unexpected Fiber popped.'); } + } - function markSpawnedDeferredLane(root, spawnedLane, entangledLanes) { - // This render spawned a deferred task. Mark it as pending. - root.pendingLanes |= spawnedLane; - root.suspendedLanes &= ~spawnedLane; // Entangle the spawned lane with the DeferredLane bit so that we know it - // was the result of another render. This lets us avoid a useDeferredValue - // waterfall — only the first level will defer. + cursor.current = valueStack[index]; + valueStack[index] = null; - var spawnedLaneIndex = laneToIndex(spawnedLane); - root.entangledLanes |= spawnedLane; - root.entanglements[spawnedLaneIndex] |= - DeferredLane | // If the parent render task suspended, we must also entangle those lanes - // with the spawned task, so that the deferred task includes all the same - // updates that the parent task did. We can exclude any lane that is not - // used for updates (e.g. Offscreen). - (entangledLanes & UpdateLanes); - } + { + fiberStack[index] = null; + } - function markRootEntangled(root, entangledLanes) { - // In addition to entangling each of the given lanes with each other, we also - // have to consider _transitive_ entanglements. For each lane that is already - // entangled with *any* of the given lanes, that lane is now transitively - // entangled with *all* the given lanes. - // - // Translated: If C is entangled with A, then entangling A with B also - // entangles C with B. - // - // If this is hard to grasp, it might help to intentionally break this - // function and look at the tests that fail in ReactTransition-test.js. Try - // commenting out one of the conditions below. - var rootEntangledLanes = (root.entangledLanes |= entangledLanes); - var entanglements = root.entanglements; - var lanes = rootEntangledLanes; - - while (lanes) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - - if ( - // Is this one of the newly entangled lanes? - (lane & entangledLanes) | // Is this lane transitively entangled with the newly entangled lanes? - (entanglements[index] & entangledLanes) - ) { - entanglements[index] |= entangledLanes; - } + index--; +} - lanes &= ~lane; - } - } - function upgradePendingLaneToSync(root, lane) { - // Since we're upgrading the priority of the given lane, there is now pending - // sync work. - root.pendingLanes |= SyncLane; // Entangle the sync lane with the lane we're upgrading. This means SyncLane - // will not be allowed to finish without also finishing the given lane. +function push(cursor, value, fiber) { + index++; + valueStack[index] = cursor.current; - root.entangledLanes |= SyncLane; - root.entanglements[SyncLaneIndex] |= lane; - } - function markHiddenUpdate(root, update, lane) { - var index = laneToIndex(lane); - var hiddenUpdates = root.hiddenUpdates; - var hiddenUpdatesForLane = hiddenUpdates[index]; + { + fiberStack[index] = fiber; + } - if (hiddenUpdatesForLane === null) { - hiddenUpdates[index] = [update]; - } else { - hiddenUpdatesForLane.push(update); - } + cursor.current = value; +} - update.lane = lane | OffscreenLane; - } - function getBumpedLaneForHydration(root, renderLanes) { - var renderLane = getHighestPriorityLane(renderLanes); - var lane; +var warnedAboutMissingGetChildContext; - if ((renderLane & SyncUpdateLanes) !== NoLane) { - lane = SyncHydrationLane; - } else { - switch (renderLane) { - case SyncLane: - lane = SyncHydrationLane; - break; +{ + warnedAboutMissingGetChildContext = {}; +} - case InputContinuousLane: - lane = InputContinuousHydrationLane; - break; +var emptyContextObject = {}; - case DefaultLane: - lane = DefaultHydrationLane; - break; +{ + Object.freeze(emptyContextObject); +} // A cursor to the current merged context object on the stack. - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - lane = TransitionHydrationLane; - break; - case IdleLane: - lane = IdleHydrationLane; - break; +var contextStackCursor$1 = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed. - default: - // Everything else is already either a hydration lane, or shouldn't - // be retried at a hydration lane. - lane = NoLane; - break; - } - } // Check if the lane we chose is suspended. If so, that indicates that we - // already attempted and failed to hydrate at that level. Also check if we're - // already rendering that lane, which is rare but could happen. +var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack. +// We use this to get access to the parent context after we have already +// pushed the next context provider, and now need to merge their contexts. - if ((lane & (root.suspendedLanes | renderLanes)) !== NoLane) { - // Give up trying to hydrate and fall back to client render. - return NoLane; - } +var previousContext = emptyContextObject; - return lane; - } - function getTransitionsForLanes(root, lanes) { - { - return null; - } +function getUnmaskedContext(workInProgress, Component, didPushOwnContextIfProvider) { + { + if (didPushOwnContextIfProvider && isContextProvider(Component)) { + // If the fiber is a context provider itself, when we read its context + // we may have already pushed its own child context on the stack. A context + // provider should not "see" its own child context. Therefore we read the + // previous (parent) context instead for a context provider. + return previousContext; } - var NoEventPriority = NoLane; - var DiscreteEventPriority = SyncLane; - var ContinuousEventPriority = InputContinuousLane; - var DefaultEventPriority = DefaultLane; - var IdleEventPriority = IdleLane; - function higherEventPriority(a, b) { - return a !== 0 && a < b ? a : b; - } - function lowerEventPriority(a, b) { - return a === 0 || a > b ? a : b; - } - function isHigherEventPriority(a, b) { - return a !== 0 && a < b; - } - function eventPriorityToLane(updatePriority) { - return updatePriority; - } - function lanesToEventPriority(lanes) { - var lane = getHighestPriorityLane(lanes); + return contextStackCursor$1.current; + } +} - if (!isHigherEventPriority(DiscreteEventPriority, lane)) { - return DiscreteEventPriority; - } +function cacheContext(workInProgress, unmaskedContext, maskedContext) { + { + var instance = workInProgress.stateNode; + instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext; + instance.__reactInternalMemoizedMaskedChildContext = maskedContext; + } +} - if (!isHigherEventPriority(ContinuousEventPriority, lane)) { - return ContinuousEventPriority; - } +function getMaskedContext(workInProgress, unmaskedContext) { + { + var type = workInProgress.type; + var contextTypes = type.contextTypes; - if (includesNonIdleWork(lane)) { - return DefaultEventPriority; - } + if (!contextTypes) { + return emptyContextObject; + } // Avoid recreating masked context unless unmasked context has changed. + // Failing to do this will result in unnecessary calls to componentWillReceiveProps. + // This may trigger infinite loops if componentWillReceiveProps calls setState. - return IdleEventPriority; - } - // Renderers that don't support hydration - // can re-export everything from this module. - function shim$1() { - throw new Error( - "The current renderer does not support hydration. " + - "This error is likely caused by a bug in React. " + - "Please file an issue." - ); - } // Hydration (when unsupported) + var instance = workInProgress.stateNode; - var supportsHydration = false; - var isSuspenseInstancePending = shim$1; - var isSuspenseInstanceFallback = shim$1; - var getSuspenseInstanceFallbackErrorDetails = shim$1; - var registerSuspenseInstanceRetry = shim$1; - var clearSuspenseBoundary = shim$1; - var clearSuspenseBoundaryFromContainer = shim$1; + if (instance && instance.__reactInternalMemoizedUnmaskedChildContext === unmaskedContext) { + return instance.__reactInternalMemoizedMaskedChildContext; + } - // Renderers that don't support hydration - // can re-export everything from this module. - function shim() { - throw new Error( - "The current renderer does not support Resources. " + - "This error is likely caused by a bug in React. " + - "Please file an issue." - ); - } // Resources (when unsupported) - var suspendResource = shim; + var context = {}; - var NO_CONTEXT = {}; - var nodeToInstanceMap = new WeakMap(); + for (var key in contextTypes) { + context[key] = unmaskedContext[key]; + } // Cache unmasked context so we can avoid recreating masked context unless necessary. + // Context is created before the class component is instantiated so check for instance. - { - Object.freeze(NO_CONTEXT); + + if (instance) { + cacheContext(workInProgress, unmaskedContext, context); } - function getPublicInstance(inst) { - switch (inst.tag) { - case "INSTANCE": - var createNodeMock = inst.rootContainerInstance.createNodeMock; - var mockNode = createNodeMock({ - type: inst.type, - props: inst.props - }); + return context; + } +} - if (typeof mockNode === "object" && mockNode !== null) { - nodeToInstanceMap.set(mockNode, inst); - } +function hasContextChanged() { + { + return didPerformWorkStackCursor.current; + } +} + +function isContextProvider(type) { + { + var childContextTypes = type.childContextTypes; + return childContextTypes !== null && childContextTypes !== undefined; + } +} - return mockNode; +function popContext(fiber) { + { + pop(didPerformWorkStackCursor, fiber); + pop(contextStackCursor$1, fiber); + } +} - default: - return inst; - } +function popTopLevelContextObject(fiber) { + { + pop(didPerformWorkStackCursor, fiber); + pop(contextStackCursor$1, fiber); + } +} + +function pushTopLevelContextObject(fiber, context, didChange) { + { + if (contextStackCursor$1.current !== emptyContextObject) { + throw new Error('Unexpected context found on stack. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function appendChild(parentInstance, child) { - { - if (!isArray(parentInstance.children)) { - error( - "An invalid container has been provided. " + - "This may indicate that another renderer is being used in addition to the test renderer. " + - "(For example, ReactDOM.createPortal inside of a ReactTestRenderer tree.) " + - "This is not supported." - ); - } - } - var index = parentInstance.children.indexOf(child); + push(contextStackCursor$1, context, fiber); + push(didPerformWorkStackCursor, didChange, fiber); + } +} - if (index !== -1) { - parentInstance.children.splice(index, 1); - } +function processChildContext(fiber, type, parentContext) { + { + var instance = fiber.stateNode; + var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future. + // It has only been added in Fiber to match the (unintentional) behavior in Stack. - parentInstance.children.push(child); - } - function insertBefore(parentInstance, child, beforeChild) { - var index = parentInstance.children.indexOf(child); + if (typeof instance.getChildContext !== 'function') { + { + var componentName = getComponentNameFromFiber(fiber) || 'Unknown'; - if (index !== -1) { - parentInstance.children.splice(index, 1); + if (!warnedAboutMissingGetChildContext[componentName]) { + warnedAboutMissingGetChildContext[componentName] = true; + + error('%s.childContextTypes is specified but there is no getChildContext() method ' + 'on the instance. You can either define getChildContext() on %s or remove ' + 'childContextTypes from it.', componentName, componentName); + } } - var beforeIndex = parentInstance.children.indexOf(beforeChild); - parentInstance.children.splice(beforeIndex, 0, child); - } - function removeChild(parentInstance, child) { - var index = parentInstance.children.indexOf(child); - parentInstance.children.splice(index, 1); - } - function clearContainer(container) { - container.children.splice(0); - } - function getRootHostContext(rootContainerInstance) { - return NO_CONTEXT; - } - function getChildHostContext(parentHostContext, type) { - return NO_CONTEXT; - } - function createInstance( - type, - props, - rootContainerInstance, - hostContext, - internalInstanceHandle - ) { - return { - type: type, - props: props, - isHidden: false, - children: [], - internalInstanceHandle: internalInstanceHandle, - rootContainerInstance: rootContainerInstance, - tag: "INSTANCE" - }; + return parentContext; } - function appendInitialChild(parentInstance, child) { - var index = parentInstance.children.indexOf(child); - if (index !== -1) { - parentInstance.children.splice(index, 1); - } + var childContext = instance.getChildContext(); - parentInstance.children.push(child); - } - function shouldSetTextContent(type, props) { - return false; - } - function createTextInstance( - text, - rootContainerInstance, - hostContext, - internalInstanceHandle - ) { - return { - text: text, - isHidden: false, - tag: "TEXT" - }; - } - var currentUpdatePriority = NoEventPriority; - function setCurrentUpdatePriority(newPriority) { - currentUpdatePriority = newPriority; - } - function getCurrentUpdatePriority() { - return currentUpdatePriority; - } - function resolveUpdatePriority() { - if (currentUpdatePriority !== NoEventPriority) { - return currentUpdatePriority; + for (var contextKey in childContext) { + if (!(contextKey in childContextTypes)) { + throw new Error((getComponentNameFromFiber(fiber) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes."); } - - return DefaultEventPriority; - } - function shouldAttemptEagerTransition() { - return false; - } - var scheduleTimeout = setTimeout; - var cancelTimeout = clearTimeout; - var noTimeout = -1; // ------------------- - function commitUpdate( - instance, - updatePayload, - type, - oldProps, - newProps, - internalInstanceHandle - ) { - instance.type = type; - instance.props = newProps; - } - function commitMount(instance, type, newProps, internalInstanceHandle) { - // noop - } - function commitTextUpdate(textInstance, oldText, newText) { - textInstance.text = newText; - } - function resetTextContent(testElement) { - // noop - } - var appendChildToContainer = appendChild; - var insertInContainerBefore = insertBefore; - var removeChildFromContainer = removeChild; - function hideInstance(instance) { - instance.isHidden = true; - } - function hideTextInstance(textInstance) { - textInstance.isHidden = true; - } - function unhideInstance(instance, props) { - instance.isHidden = false; - } - function unhideTextInstance(textInstance, text) { - textInstance.isHidden = false; - } - function preloadInstance(type, props) { - // Return true to indicate it's already loaded - return true; } - function waitForCommitToBeReady() { - return null; - } - var NotPendingTransition = null; - var valueStack = []; - var fiberStack; + return assign({}, parentContext, childContext); + } +} - { - fiberStack = []; - } +function pushContextProvider(workInProgress) { + { + var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity. + // If the instance does not exist yet, we will push null at first, + // and replace it on the stack later when invalidating the context. - var index = -1; + var memoizedMergedChildContext = instance && instance.__reactInternalMemoizedMergedChildContext || emptyContextObject; // Remember the parent context so we can merge with it later. + // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates. - function createCursor(defaultValue) { - return { - current: defaultValue - }; - } + previousContext = contextStackCursor$1.current; + push(contextStackCursor$1, memoizedMergedChildContext, workInProgress); + push(didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress); + return true; + } +} - function pop(cursor, fiber) { - if (index < 0) { - { - error("Unexpected pop."); - } +function invalidateContextProvider(workInProgress, type, didChange) { + { + var instance = workInProgress.stateNode; - return; - } + if (!instance) { + throw new Error('Expected to have an instance by this point. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } - { - if (fiber !== fiberStack[index]) { - error("Unexpected Fiber popped."); - } - } + if (didChange) { + // Merge parent and own context. + // Skip this if we're not updating due to sCU. + // This avoids unnecessarily recomputing memoized values. + var mergedContext = processChildContext(workInProgress, type, previousContext); + instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one. + // It is important to unwind the context in the reverse order. - cursor.current = valueStack[index]; - valueStack[index] = null; + pop(didPerformWorkStackCursor, workInProgress); + pop(contextStackCursor$1, workInProgress); // Now push the new context and mark that it has changed. - { - fiberStack[index] = null; - } + push(contextStackCursor$1, mergedContext, workInProgress); + push(didPerformWorkStackCursor, didChange, workInProgress); + } else { + pop(didPerformWorkStackCursor, workInProgress); + push(didPerformWorkStackCursor, didChange, workInProgress); + } + } +} - index--; +function findCurrentUnmaskedContext(fiber) { + { + // Currently this is only used with renderSubtreeIntoContainer; not sure if it + // makes sense elsewhere + if (!isFiberMounted(fiber) || fiber.tag !== ClassComponent) { + throw new Error('Expected subtree parent to be a mounted class component. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function push(cursor, value, fiber) { - index++; - valueStack[index] = cursor.current; + var node = fiber; - { - fiberStack[index] = fiber; - } + do { + switch (node.tag) { + case HostRoot: + return node.stateNode.context; - cursor.current = value; - } + case ClassComponent: + { + var Component = node.type; - var warnedAboutMissingGetChildContext; + if (isContextProvider(Component)) { + return node.stateNode.__reactInternalMemoizedMergedChildContext; + } - { - warnedAboutMissingGetChildContext = {}; - } + break; + } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - var emptyContextObject = {}; - { - Object.freeze(emptyContextObject); - } // A cursor to the current merged context object on the stack. + node = node.return; + } while (node !== null); - var contextStackCursor$1 = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed. + throw new Error('Found unexpected detached subtree parent. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack. - // We use this to get access to the parent context after we have already - // pushed the next context provider, and now need to merge their contexts. +// We use the existence of the state object as an indicator that the component +// is hidden. +var OffscreenVisible = +/* */ +1; +var OffscreenDetached = +/* */ +2; +var OffscreenPassiveEffectsConnected = +/* */ +4; +function isOffscreenManual(offscreenFiber) { + return offscreenFiber.memoizedProps !== null && offscreenFiber.memoizedProps.mode === 'manual'; +} - var previousContext = emptyContextObject; +/** + * inlined Object.is polyfill to avoid requiring consumers ship their own + * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is + */ +function is(x, y) { + return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare + ; +} - function getUnmaskedContext( - workInProgress, - Component, - didPushOwnContextIfProvider - ) { - { - if (didPushOwnContextIfProvider && isContextProvider(Component)) { - // If the fiber is a context provider itself, when we read its context - // we may have already pushed its own child context on the stack. A context - // provider should not "see" its own child context. Therefore we read the - // previous (parent) context instead for a context provider. - return previousContext; - } +var objectIs = // $FlowFixMe[method-unbinding] +typeof Object.is === 'function' ? Object.is : is; - return contextStackCursor$1.current; - } - } +function describeBuiltInComponentFrame(name) { + { + return describeComponentFrame(name); + } +} +function describeDebugInfoFrame(name, env) { + return describeBuiltInComponentFrame(name + (env ? ' (' + env + ')' : '')); +} - function cacheContext(workInProgress, unmaskedContext, maskedContext) { - { - var instance = workInProgress.stateNode; - instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext; - instance.__reactInternalMemoizedMaskedChildContext = maskedContext; - } - } +{ + var PossiblyWeakMap$1 = typeof WeakMap === 'function' ? WeakMap : Map; + new PossiblyWeakMap$1(); +} - function getMaskedContext(workInProgress, unmaskedContext) { - { - var type = workInProgress.type; - var contextTypes = type.contextTypes; +function describeComponentFrame(name) { + return '\n in ' + (name || 'Unknown'); +} - if (!contextTypes) { - return emptyContextObject; - } // Avoid recreating masked context unless unmasked context has changed. - // Failing to do this will result in unnecessary calls to componentWillReceiveProps. - // This may trigger infinite loops if componentWillReceiveProps calls setState. +function describeClassComponentFrame(ctor) { + { + return describeFunctionComponentFrame(ctor); + } +} +function describeFunctionComponentFrame(fn) { + { + if (!fn) { + return ''; + } - var instance = workInProgress.stateNode; + var name = fn.displayName || fn.name || null; + return describeComponentFrame(name); + } +} - if ( - instance && - instance.__reactInternalMemoizedUnmaskedChildContext === - unmaskedContext - ) { - return instance.__reactInternalMemoizedMaskedChildContext; - } +function describeFiber(fiber) { + switch (fiber.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + return describeBuiltInComponentFrame(fiber.type); - var context = {}; + case LazyComponent: + return describeBuiltInComponentFrame('Lazy'); - for (var key in contextTypes) { - context[key] = unmaskedContext[key]; - } // Cache unmasked context so we can avoid recreating masked context unless necessary. - // Context is created before the class component is instantiated so check for instance. + case SuspenseComponent: + return describeBuiltInComponentFrame('Suspense'); - if (instance) { - cacheContext(workInProgress, unmaskedContext, context); - } + case SuspenseListComponent: + return describeBuiltInComponentFrame('SuspenseList'); - return context; - } - } + case FunctionComponent: + case SimpleMemoComponent: + return describeFunctionComponentFrame(fiber.type); - function hasContextChanged() { - { - return didPerformWorkStackCursor.current; - } - } + case ForwardRef: + return describeFunctionComponentFrame(fiber.type.render); - function isContextProvider(type) { - { - var childContextTypes = type.childContextTypes; - return childContextTypes !== null && childContextTypes !== undefined; - } - } + case ClassComponent: + return describeClassComponentFrame(fiber.type); - function popContext(fiber) { - { - pop(didPerformWorkStackCursor, fiber); - pop(contextStackCursor$1, fiber); - } - } + default: + return ''; + } +} - function popTopLevelContextObject(fiber) { - { - pop(didPerformWorkStackCursor, fiber); - pop(contextStackCursor$1, fiber); - } - } +function getStackByFiberInDevAndProd(workInProgress) { + try { + var info = ''; + var node = workInProgress; - function pushTopLevelContextObject(fiber, context, didChange) { - { - if (contextStackCursor$1.current !== emptyContextObject) { - throw new Error( - "Unexpected context found on stack. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } + do { + info += describeFiber(node); - push(contextStackCursor$1, context, fiber); - push(didPerformWorkStackCursor, didChange, fiber); - } - } + if (true) { + // Add any Server Component stack frames in reverse order. + var debugInfo = node._debugInfo; - function processChildContext(fiber, type, parentContext) { - { - var instance = fiber.stateNode; - var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future. - // It has only been added in Fiber to match the (unintentional) behavior in Stack. + if (debugInfo) { + for (var i = debugInfo.length - 1; i >= 0; i--) { + var entry = debugInfo[i]; - if (typeof instance.getChildContext !== "function") { - { - var componentName = getComponentNameFromFiber(fiber) || "Unknown"; - - if (!warnedAboutMissingGetChildContext[componentName]) { - warnedAboutMissingGetChildContext[componentName] = true; - - error( - "%s.childContextTypes is specified but there is no getChildContext() method " + - "on the instance. You can either define getChildContext() on %s or remove " + - "childContextTypes from it.", - componentName, - componentName - ); + if (typeof entry.name === 'string') { + info += describeDebugInfoFrame(entry.name, entry.env); } } - - return parentContext; } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - var childContext = instance.getChildContext(); - for (var contextKey in childContext) { - if (!(contextKey in childContextTypes)) { - throw new Error( - (getComponentNameFromFiber(fiber) || "Unknown") + - '.getChildContext(): key "' + - contextKey + - '" is not defined in childContextTypes.' - ); - } - } + node = node.return; + } while (node); - return assign({}, parentContext, childContext); - } - } + return info; + } catch (x) { + return '\nError generating stack: ' + x.message + '\n' + x.stack; + } +} - function pushContextProvider(workInProgress) { - { - var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity. - // If the instance does not exist yet, we will push null at first, - // and replace it on the stack later when invalidating the context. - - var memoizedMergedChildContext = - (instance && instance.__reactInternalMemoizedMergedChildContext) || - emptyContextObject; // Remember the parent context so we can merge with it later. - // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates. - - previousContext = contextStackCursor$1.current; - push(contextStackCursor$1, memoizedMergedChildContext, workInProgress); - push( - didPerformWorkStackCursor, - didPerformWorkStackCursor.current, - workInProgress - ); - return true; - } - } - - function invalidateContextProvider(workInProgress, type, didChange) { - { - var instance = workInProgress.stateNode; - - if (!instance) { - throw new Error( - "Expected to have an instance by this point. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - - if (didChange) { - // Merge parent and own context. - // Skip this if we're not updating due to sCU. - // This avoids unnecessarily recomputing memoized values. - var mergedContext = processChildContext( - workInProgress, - type, - previousContext - ); - instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one. - // It is important to unwind the context in the reverse order. - - pop(didPerformWorkStackCursor, workInProgress); - pop(contextStackCursor$1, workInProgress); // Now push the new context and mark that it has changed. - - push(contextStackCursor$1, mergedContext, workInProgress); - push(didPerformWorkStackCursor, didChange, workInProgress); - } else { - pop(didPerformWorkStackCursor, workInProgress); - push(didPerformWorkStackCursor, didChange, workInProgress); - } - } - } +var CapturedStacks = new WeakMap(); +function createCapturedValueAtFiber(value, source) { + // If the value is an error, call this function immediately after it is thrown + // so the stack is accurate. + var stack; + + if (typeof value === 'object' && value !== null) { + var capturedStack = CapturedStacks.get(value); + + if (typeof capturedStack === 'string') { + stack = capturedStack; + } else { + stack = getStackByFiberInDevAndProd(source); + CapturedStacks.set(value, stack); + } + } else { + stack = getStackByFiberInDevAndProd(source); + } + + return { + value: value, + source: source, + stack: stack + }; +} +function createCapturedValueFromError(value, stack) { + if (typeof stack === 'string') { + CapturedStacks.set(value, stack); + } + + return { + value: value, + source: null, + stack: stack + }; +} - function findCurrentUnmaskedContext(fiber) { - { - // Currently this is only used with renderSubtreeIntoContainer; not sure if it - // makes sense elsewhere - if (!isFiberMounted(fiber) || fiber.tag !== ClassComponent) { - throw new Error( - "Expected subtree parent to be a mounted class component. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } +var contextStackCursor = createCursor(null); +var contextFiberStackCursor = createCursor(null); +var rootInstanceStackCursor = createCursor(null); // Represents the nearest host transition provider (in React DOM, a
) +// NOTE: Since forms cannot be nested, and this feature is only implemented by +// React DOM, we don't technically need this to be a stack. It could be a single +// module variable instead. + +var hostTransitionProviderCursor = createCursor(null); // TODO: This should initialize to NotPendingTransition, a constant +// imported from the fiber config. However, because of a cycle in the module +// graph, that value isn't defined during this module's initialization. I can't +// think of a way to work around this without moving that value out of the +// fiber config. For now, the "no provider" case is handled when reading, +// inside useHostTransitionStatus. + +var HostTransitionContext = { + $$typeof: REACT_CONTEXT_TYPE, + Provider: null, + Consumer: null, + _currentValue: null, + _currentValue2: null, + _threadCount: 0 +}; + +function requiredContext(c) { + { + if (c === null) { + error('Expected host context to exist. This error is likely caused by a bug ' + 'in React. Please file an issue.'); + } + } + + return c; +} - var node = fiber; +function getRootHostContainer() { + var rootInstance = requiredContext(rootInstanceStackCursor.current); + return rootInstance; +} - do { - switch (node.tag) { - case HostRoot: - return node.stateNode.context; +function pushHostContainer(fiber, nextRootInstance) { + // Push current root instance onto the stack; + // This allows us to reset root when portals are popped. + push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it. + // This enables us to pop only Fibers that provide unique contexts. - case ClassComponent: { - var Component = node.type; + push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack. + // However, we can't just call getRootHostContext() and push it because + // we'd have a different number of entries on the stack depending on + // whether getRootHostContext() throws somewhere in renderer code or not. + // So we push an empty value first. This lets us safely unwind on errors. - if (isContextProvider(Component)) { - return node.stateNode.__reactInternalMemoizedMergedChildContext; - } + push(contextStackCursor, null, fiber); + var nextRootContext = getRootHostContext(); // Now that we know this function doesn't throw, replace it. - break; - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null + pop(contextStackCursor, fiber); + push(contextStackCursor, nextRootContext, fiber); +} - node = node.return; - } while (node !== null); +function popHostContainer(fiber) { + pop(contextStackCursor, fiber); + pop(contextFiberStackCursor, fiber); + pop(rootInstanceStackCursor, fiber); +} - throw new Error( - "Found unexpected detached subtree parent. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } +function getHostContext() { + var context = requiredContext(contextStackCursor.current); + return context; +} - // We use the existence of the state object as an indicator that the component - // is hidden. - var OffscreenVisible = - /* */ - 1; - var OffscreenDetached = - /* */ - 2; - var OffscreenPassiveEffectsConnected = - /* */ - 4; - function isOffscreenManual(offscreenFiber) { - return ( - offscreenFiber.memoizedProps !== null && - offscreenFiber.memoizedProps.mode === "manual" - ); - } +function pushHostContext(fiber) { + { + var stateHook = fiber.memoizedState; - /** - * inlined Object.is polyfill to avoid requiring consumers ship their own - * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is - */ - function is(x, y) { - return ( - (x === y && (x !== 0 || 1 / x === 1 / y)) || (x !== x && y !== y) // eslint-disable-line no-self-compare - ); + if (stateHook !== null) { + // Only provide context if this fiber has been upgraded by a host + // transition. We use the same optimization for regular host context below. + push(hostTransitionProviderCursor, fiber, fiber); } + } - var objectIs = typeof Object.is === "function" ? Object.is : is; // $FlowFixMe[method-unbinding] + var context = requiredContext(contextStackCursor.current); + var nextContext = getChildHostContext(); // Don't push this Fiber's context unless it's unique. - function describeBuiltInComponentFrame(name) { - { - return describeComponentFrame(name); - } - } - function describeDebugInfoFrame(name, env) { - return describeBuiltInComponentFrame( - name + (env ? " (" + env + ")" : "") - ); - } + if (context !== nextContext) { + // Track the context and the Fiber that provided it. + // This enables us to pop only Fibers that provide unique contexts. + push(contextFiberStackCursor, fiber, fiber); + push(contextStackCursor, nextContext, fiber); + } +} - { - var PossiblyWeakMap$1 = typeof WeakMap === "function" ? WeakMap : Map; - new PossiblyWeakMap$1(); - } +function popHostContext(fiber) { + if (contextFiberStackCursor.current === fiber) { + // Do not pop unless this Fiber provided the current context. + // pushHostContext() only pushes Fibers that provide unique contexts. + pop(contextStackCursor, fiber); + pop(contextFiberStackCursor, fiber); + } - function describeComponentFrame(name) { - return "\n in " + (name || "Unknown"); - } + { + if (hostTransitionProviderCursor.current === fiber) { + // Do not pop unless this Fiber provided the current context. This is mostly + // a performance optimization, but conveniently it also prevents a potential + // data race where a host provider is upgraded (i.e. memoizedState becomes + // non-null) during a concurrent event. This is a bit of a flaw in the way + // we upgrade host components, but because we're accounting for it here, it + // should be fine. + pop(hostTransitionProviderCursor, fiber); // When popping the transition provider, we reset the context value back + // to `null`. We can do this because you're not allowd to nest forms. If + // we allowed for multiple nested host transition providers, then we'd + // need to reset this to the parent provider's status. - function describeClassComponentFrame(ctor) { - { - return describeFunctionComponentFrame(ctor); - } - } - function describeFunctionComponentFrame(fn) { { - if (!fn) { - return ""; - } - - var name = fn.displayName || fn.name || null; - return describeComponentFrame(name); + HostTransitionContext._currentValue2 = null; } } + } +} - function describeFiber(fiber) { - switch (fiber.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - return describeBuiltInComponentFrame(fiber.type); - - case LazyComponent: - return describeBuiltInComponentFrame("Lazy"); - - case SuspenseComponent: - return describeBuiltInComponentFrame("Suspense"); +var maxRowLength = 120; +var idealDepth = 15; - case SuspenseListComponent: - return describeBuiltInComponentFrame("SuspenseList"); +function findNotableNode(node, indent) { + if (node.serverProps === undefined && node.serverTail.length === 0 && node.children.length === 1 && node.distanceFromLeaf > 3 && node.distanceFromLeaf > idealDepth - indent) { + // This is not an interesting node for contextual purposes so we can skip it. + var child = node.children[0]; + return findNotableNode(child, indent); + } - case FunctionComponent: - case SimpleMemoComponent: - return describeFunctionComponentFrame(fiber.type); + return node; +} - case ForwardRef: - return describeFunctionComponentFrame(fiber.type.render); +function indentation(indent) { + return ' ' + ' '.repeat(indent); +} - case ClassComponent: - return describeClassComponentFrame(fiber.type); +function added(indent) { + return '+ ' + ' '.repeat(indent); +} - default: - return ""; - } - } +function removed(indent) { + return '- ' + ' '.repeat(indent); +} - function getStackByFiberInDevAndProd(workInProgress) { - try { - var info = ""; - var node = workInProgress; +function describeFiberType(fiber) { + switch (fiber.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + return fiber.type; - do { - info += describeFiber(node); + case LazyComponent: + return 'Lazy'; - if (true) { - // Add any Server Component stack frames in reverse order. - var debugInfo = node._debugInfo; + case SuspenseComponent: + return 'Suspense'; - if (debugInfo) { - for (var i = debugInfo.length - 1; i >= 0; i--) { - var entry = debugInfo[i]; + case SuspenseListComponent: + return 'SuspenseList'; - if (typeof entry.name === "string") { - info += describeDebugInfoFrame(entry.name, entry.env); - } - } - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null + case FunctionComponent: + case SimpleMemoComponent: + var fn = fiber.type; + return fn.displayName || fn.name || null; - node = node.return; - } while (node); + case ForwardRef: + var render = fiber.type.render; + return render.displayName || render.name || null; - return info; - } catch (x) { - return "\nError generating stack: " + x.message + "\n" + x.stack; - } - } + case ClassComponent: + var ctr = fiber.type; + return ctr.displayName || ctr.name || null; - var CapturedStacks = new WeakMap(); - function createCapturedValueAtFiber(value, source) { - // If the value is an error, call this function immediately after it is thrown - // so the stack is accurate. - var stack; + default: + // Skip + return null; + } +} - if (typeof value === "object" && value !== null) { - var capturedStack = CapturedStacks.get(value); +var needsEscaping = /["'&<>\n\t]/; - if (typeof capturedStack === "string") { - stack = capturedStack; - } else { - stack = getStackByFiberInDevAndProd(source); - CapturedStacks.set(value, stack); - } - } else { - stack = getStackByFiberInDevAndProd(source); - } +function describeTextNode(content, maxLength) { + if (needsEscaping.test(content)) { + var encoded = JSON.stringify(content); - return { - value: value, - source: source, - stack: stack - }; - } - function createCapturedValueFromError(value, stack) { - if (typeof stack === "string") { - CapturedStacks.set(value, stack); + if (encoded.length > maxLength - 2) { + if (maxLength < 8) { + return '{"..."}'; } - return { - value: value, - source: null, - stack: stack - }; + return '{' + encoded.slice(0, maxLength - 7) + '..."}'; } - var contextStackCursor = createCursor(null); - var contextFiberStackCursor = createCursor(null); - var rootInstanceStackCursor = createCursor(null); // Represents the nearest host transition provider (in React DOM, a ) - // NOTE: Since forms cannot be nested, and this feature is only implemented by - // React DOM, we don't technically need this to be a stack. It could be a single - // module variable instead. - - var hostTransitionProviderCursor = createCursor(null); // TODO: This should initialize to NotPendingTransition, a constant - // imported from the fiber config. However, because of a cycle in the module - // graph, that value isn't defined during this module's initialization. I can't - // think of a way to work around this without moving that value out of the - // fiber config. For now, the "no provider" case is handled when reading, - // inside useHostTransitionStatus. - - var HostTransitionContext = { - $$typeof: REACT_CONTEXT_TYPE, - Provider: null, - Consumer: null, - _currentValue: null, - _currentValue2: null, - _threadCount: 0 - }; - - function requiredContext(c) { - { - if (c === null) { - error( - "Expected host context to exist. This error is likely caused by a bug " + - "in React. Please file an issue." - ); - } + return '{' + encoded + '}'; + } else { + if (content.length > maxLength) { + if (maxLength < 5) { + return '{"..."}'; } - return c; - } - - function getRootHostContainer() { - var rootInstance = requiredContext(rootInstanceStackCursor.current); - return rootInstance; + return content.slice(0, maxLength - 3) + '...'; } - function pushHostContainer(fiber, nextRootInstance) { - // Push current root instance onto the stack; - // This allows us to reset root when portals are popped. - push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it. - // This enables us to pop only Fibers that provide unique contexts. + return content; + } +} - push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack. - // However, we can't just call getRootHostContext() and push it because - // we'd have a different number of entries on the stack depending on - // whether getRootHostContext() throws somewhere in renderer code or not. - // So we push an empty value first. This lets us safely unwind on errors. +function describeTextDiff(clientText, serverProps, indent) { + var maxLength = maxRowLength - indent * 2; - push(contextStackCursor, null, fiber); - var nextRootContext = getRootHostContext(); // Now that we know this function doesn't throw, replace it. + if (serverProps === null) { + return added(indent) + describeTextNode(clientText, maxLength) + '\n'; + } else if (typeof serverProps === 'string') { + var serverText = serverProps; + var firstDiff = 0; - pop(contextStackCursor, fiber); - push(contextStackCursor, nextRootContext, fiber); + for (; firstDiff < serverText.length && firstDiff < clientText.length; firstDiff++) { + if (serverText.charCodeAt(firstDiff) !== clientText.charCodeAt(firstDiff)) { + break; + } } - function popHostContainer(fiber) { - pop(contextStackCursor, fiber); - pop(contextFiberStackCursor, fiber); - pop(rootInstanceStackCursor, fiber); + if (firstDiff > maxLength - 8 && firstDiff > 10) { + // The first difference between the two strings would be cut off, so cut off in + // the beginning instead. + clientText = '...' + clientText.slice(firstDiff - 8); + serverText = '...' + serverText.slice(firstDiff - 8); } - function getHostContext() { - var context = requiredContext(contextStackCursor.current); - return context; - } + return added(indent) + describeTextNode(clientText, maxLength) + '\n' + removed(indent) + describeTextNode(serverText, maxLength) + '\n'; + } else { + return indentation(indent) + describeTextNode(clientText, maxLength) + '\n'; + } +} - function pushHostContext(fiber) { - { - var stateHook = fiber.memoizedState; +function objectName(object) { + // $FlowFixMe[method-unbinding] + var name = Object.prototype.toString.call(object); + return name.replace(/^\[object (.*)\]$/, function (m, p0) { + return p0; + }); +} - if (stateHook !== null) { - // Only provide context if this fiber has been upgraded by a host - // transition. We use the same optimization for regular host context below. - push(hostTransitionProviderCursor, fiber, fiber); - } - } +function describeValue(value, maxLength) { + switch (typeof value) { + case 'string': + { + var encoded = JSON.stringify(value); - var context = requiredContext(contextStackCursor.current); - var nextContext = getChildHostContext(); // Don't push this Fiber's context unless it's unique. + if (encoded.length > maxLength) { + if (maxLength < 5) { + return '"..."'; + } - if (context !== nextContext) { - // Track the context and the Fiber that provided it. - // This enables us to pop only Fibers that provide unique contexts. - push(contextFiberStackCursor, fiber, fiber); - push(contextStackCursor, nextContext, fiber); - } - } + return encoded.slice(0, maxLength - 4) + '..."'; + } - function popHostContext(fiber) { - if (contextFiberStackCursor.current === fiber) { - // Do not pop unless this Fiber provided the current context. - // pushHostContext() only pushes Fibers that provide unique contexts. - pop(contextStackCursor, fiber); - pop(contextFiberStackCursor, fiber); + return encoded; } + case 'object': { - if (hostTransitionProviderCursor.current === fiber) { - // Do not pop unless this Fiber provided the current context. This is mostly - // a performance optimization, but conveniently it also prevents a potential - // data race where a host provider is upgraded (i.e. memoizedState becomes - // non-null) during a concurrent event. This is a bit of a flaw in the way - // we upgrade host components, but because we're accounting for it here, it - // should be fine. - pop(hostTransitionProviderCursor, fiber); // When popping the transition provider, we reset the context value back - // to `null`. We can do this because you're not allowd to nest forms. If - // we allowed for multiple nested host transition providers, then we'd - // need to reset this to the parent provider's status. + if (value === null) { + return 'null'; + } - { - HostTransitionContext._currentValue2 = null; - } + if (isArray(value)) { + return '[...]'; } - } - } - var maxRowLength = 120; - var idealDepth = 15; + if (value.$$typeof === REACT_ELEMENT_TYPE) { + var type = getComponentNameFromType(value.type); + return type ? '<' + type + '>' : '<...>'; + } - function findNotableNode(node, indent) { - if ( - node.serverProps === undefined && - node.serverTail.length === 0 && - node.children.length === 1 && - node.distanceFromLeaf > 3 && - node.distanceFromLeaf > idealDepth - indent - ) { - // This is not an interesting node for contextual purposes so we can skip it. - var child = node.children[0]; - return findNotableNode(child, indent); - } + var name = objectName(value); - return node; - } + if (name === 'Object') { + var properties = ''; + maxLength -= 2; - function indentation(indent) { - return " " + " ".repeat(indent); - } + for (var propName in value) { + if (!value.hasOwnProperty(propName)) { + continue; + } - function added(indent) { - return "+ " + " ".repeat(indent); - } + var jsonPropName = JSON.stringify(propName); - function removed(indent) { - return "- " + " ".repeat(indent); - } + if (jsonPropName !== '"' + propName + '"') { + propName = jsonPropName; + } - function describeFiberType(fiber) { - switch (fiber.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - return fiber.type; + maxLength -= propName.length - 2; + var propValue = describeValue(value[propName], maxLength < 15 ? maxLength : 15); + maxLength -= propValue.length; - case LazyComponent: - return "Lazy"; + if (maxLength < 0) { + properties += properties === '' ? '...' : ', ...'; + break; + } - case SuspenseComponent: - return "Suspense"; + properties += (properties === '' ? '' : ',') + propName + ':' + propValue; + } - case SuspenseListComponent: - return "SuspenseList"; + return '{' + properties + '}'; + } - case FunctionComponent: - case SimpleMemoComponent: - var fn = fiber.type; - return fn.displayName || fn.name || null; + return name; + } - case ForwardRef: - var render = fiber.type.render; - return render.displayName || render.name || null; + case 'function': + { + var _name = value.displayName || value.name; - case ClassComponent: - var ctr = fiber.type; - return ctr.displayName || ctr.name || null; + return _name ? 'function ' + _name : 'function'; + } - default: - // Skip - return null; + default: + // eslint-disable-next-line react-internal/safe-string-coercion + return String(value); + } +} + +function describePropValue(value, maxLength) { + if (typeof value === 'string' && !needsEscaping.test(value)) { + if (value.length > maxLength - 2) { + if (maxLength < 5) { + return '"..."'; } + + return '"' + value.slice(0, maxLength - 5) + '..."'; } - var needsEscaping = /["'&<>\n\t]/; + return '"' + value + '"'; + } - function describeTextNode(content, maxLength) { - if (needsEscaping.test(content)) { - var encoded = JSON.stringify(content); + return '{' + describeValue(value, maxLength - 2) + '}'; +} - if (encoded.length > maxLength - 2) { - if (maxLength < 8) { - return '{"..."}'; - } +function describeCollapsedElement(type, props, indent) { + // This function tries to fit the props into a single line for non-essential elements. + // We also ignore children because we're not going deeper. + var maxLength = maxRowLength - indent * 2 - type.length - 2; + var content = ''; - return "{" + encoded.slice(0, maxLength - 7) + '..."}'; - } + for (var propName in props) { + if (!props.hasOwnProperty(propName)) { + continue; + } - return "{" + encoded + "}"; - } else { - if (content.length > maxLength) { - if (maxLength < 5) { - return '{"..."}'; - } + if (propName === 'children') { + // Ignored. + continue; + } - return content.slice(0, maxLength - 3) + "..."; - } + var propValue = describePropValue(props[propName], 15); + maxLength -= propName.length + propValue.length + 2; - return content; - } + if (maxLength < 0) { + content += ' ...'; + break; } - function describeTextDiff(clientText, serverProps, indent) { - var maxLength = maxRowLength - indent * 2; + content += ' ' + propName + '=' + propValue; + } - if (serverProps === null) { - return added(indent) + describeTextNode(clientText, maxLength) + "\n"; - } else if (typeof serverProps === "string") { - var serverText = serverProps; - var firstDiff = 0; + return indentation(indent) + '<' + type + content + '>\n'; +} - for ( - ; - firstDiff < serverText.length && firstDiff < clientText.length; - firstDiff++ - ) { - if ( - serverText.charCodeAt(firstDiff) !== - clientText.charCodeAt(firstDiff) - ) { - break; - } - } +function describeExpandedElement(type, props, rowPrefix) { + // This function tries to fit the props into a single line for non-essential elements. + // We also ignore children because we're not going deeper. + var remainingRowLength = maxRowLength - rowPrefix.length - type.length; // We add the properties to a set so we can choose later whether we'll put it on one + // line or multiple lines. - if (firstDiff > maxLength - 8 && firstDiff > 10) { - // The first difference between the two strings would be cut off, so cut off in - // the beginning instead. - clientText = "..." + clientText.slice(firstDiff - 8); - serverText = "..." + serverText.slice(firstDiff - 8); - } + var properties = []; - return ( - added(indent) + - describeTextNode(clientText, maxLength) + - "\n" + - removed(indent) + - describeTextNode(serverText, maxLength) + - "\n" - ); - } else { - return ( - indentation(indent) + describeTextNode(clientText, maxLength) + "\n" - ); - } + for (var propName in props) { + if (!props.hasOwnProperty(propName)) { + continue; } - function objectName(object) { - // $FlowFixMe[method-unbinding] - var name = Object.prototype.toString.call(object); - return name.replace(/^\[object (.*)\]$/, function (m, p0) { - return p0; - }); + if (propName === 'children') { + // Ignored. + continue; } - function describeValue(value, maxLength) { - switch (typeof value) { - case "string": { - var encoded = JSON.stringify(value); + var maxLength = maxRowLength - rowPrefix.length - propName.length - 1; + var propValue = describePropValue(props[propName], maxLength); + remainingRowLength -= propName.length + propValue.length + 2; + properties.push(propName + '=' + propValue); + } - if (encoded.length > maxLength) { - if (maxLength < 5) { - return '"..."'; - } + if (properties.length === 0) { + return rowPrefix + '<' + type + '>\n'; + } else if (remainingRowLength > 0) { + // We can fit all on one row. + return rowPrefix + '<' + type + ' ' + properties.join(' ') + '>\n'; + } else { + // Split into one row per property: + return rowPrefix + '<' + type + '\n' + rowPrefix + ' ' + properties.join('\n' + rowPrefix + ' ') + '\n' + rowPrefix + '>\n'; + } +} - return encoded.slice(0, maxLength - 4) + '..."'; - } +function describePropertiesDiff(clientObject, serverObject, indent) { + var properties = ''; + var remainingServerProperties = assign({}, serverObject); - return encoded; - } + for (var propName in clientObject) { + if (!clientObject.hasOwnProperty(propName)) { + continue; + } - case "object": { - if (value === null) { - return "null"; - } + delete remainingServerProperties[propName]; + var maxLength = maxRowLength - indent * 2 - propName.length - 2; + var clientValue = clientObject[propName]; + var clientPropValue = describeValue(clientValue, maxLength); - if (isArray(value)) { - return "[...]"; - } + if (serverObject.hasOwnProperty(propName)) { + var serverValue = serverObject[propName]; + var serverPropValue = describeValue(serverValue, maxLength); + properties += added(indent) + propName + ': ' + clientPropValue + '\n'; + properties += removed(indent) + propName + ': ' + serverPropValue + '\n'; + } else { + properties += added(indent) + propName + ': ' + clientPropValue + '\n'; + } + } - if (value.$$typeof === REACT_ELEMENT_TYPE) { - var type = getComponentNameFromType(value.type); - return type ? "<" + type + ">" : "<...>"; - } + for (var _propName in remainingServerProperties) { + if (!remainingServerProperties.hasOwnProperty(_propName)) { + continue; + } - var name = objectName(value); + var _maxLength = maxRowLength - indent * 2 - _propName.length - 2; - if (name === "Object") { - var properties = ""; - maxLength -= 2; + var _serverValue = remainingServerProperties[_propName]; - for (var propName in value) { - if (!value.hasOwnProperty(propName)) { - continue; - } + var _serverPropValue = describeValue(_serverValue, _maxLength); - var jsonPropName = JSON.stringify(propName); + properties += removed(indent) + _propName + ': ' + _serverPropValue + '\n'; + } - if (jsonPropName !== '"' + propName + '"') { - propName = jsonPropName; - } + return properties; +} - maxLength -= propName.length - 2; - var propValue = describeValue( - value[propName], - maxLength < 15 ? maxLength : 15 - ); - maxLength -= propValue.length; +function describeElementDiff(type, clientProps, serverProps, indent) { + var content = ''; // Maps any previously unmatched lower case server prop name to its full prop name - if (maxLength < 0) { - properties += properties === "" ? "..." : ", ..."; - break; - } + var serverPropNames = new Map(); - properties += - (properties === "" ? "" : ",") + propName + ":" + propValue; - } + for (var propName in serverProps) { + if (!serverProps.hasOwnProperty(propName)) { + continue; + } - return "{" + properties + "}"; - } + serverPropNames.set(propName.toLowerCase(), propName); + } - return name; - } + if (serverPropNames.size === 1 && serverPropNames.has('children')) { + content += describeExpandedElement(type, clientProps, indentation(indent)); + } else { + for (var _propName2 in clientProps) { + if (!clientProps.hasOwnProperty(_propName2)) { + continue; + } - case "function": { - var _name = value.displayName || value.name; + if (_propName2 === 'children') { + // Handled below. + continue; + } - return _name ? "function " + _name : "function"; - } + var maxLength = maxRowLength - (indent + 1) * 2 - _propName2.length - 1; + var serverPropName = serverPropNames.get(_propName2.toLowerCase()); - default: - // eslint-disable-next-line react-internal/safe-string-coercion - return String(value); - } - } + if (serverPropName !== undefined) { + serverPropNames.delete(_propName2.toLowerCase()); // There's a diff here. - function describePropValue(value, maxLength) { - if (typeof value === "string" && !needsEscaping.test(value)) { - if (value.length > maxLength - 2) { - if (maxLength < 5) { - return '"..."'; - } + var clientValue = clientProps[_propName2]; + var serverValue = serverProps[serverPropName]; + var clientPropValue = describePropValue(clientValue, maxLength); + var serverPropValue = describePropValue(serverValue, maxLength); - return '"' + value.slice(0, maxLength - 5) + '..."'; + if (typeof clientValue === 'object' && clientValue !== null && typeof serverValue === 'object' && serverValue !== null && objectName(clientValue) === 'Object' && objectName(serverValue) === 'Object' && ( // Only do the diff if the object has a lot of keys or was shortened. + Object.keys(clientValue).length > 2 || Object.keys(serverValue).length > 2 || clientPropValue.indexOf('...') > -1 || serverPropValue.indexOf('...') > -1)) { + // We're comparing two plain objects. We can diff the nested objects instead. + content += indentation(indent + 1) + _propName2 + '={{\n' + describePropertiesDiff(clientValue, serverValue, indent + 2) + indentation(indent + 1) + '}}\n'; + } else { + content += added(indent + 1) + _propName2 + '=' + clientPropValue + '\n'; + content += removed(indent + 1) + _propName2 + '=' + serverPropValue + '\n'; } + } else { + // Considered equal. + content += indentation(indent + 1) + _propName2 + '=' + describePropValue(clientProps[_propName2], maxLength) + '\n'; + } + } - return '"' + value + '"'; + serverPropNames.forEach(function (propName) { + if (propName === 'children') { + // Handled below. + return; } - return "{" + describeValue(value, maxLength - 2) + "}"; + var maxLength = maxRowLength - (indent + 1) * 2 - propName.length - 1; + content += removed(indent + 1) + propName + '=' + describePropValue(serverProps[propName], maxLength) + '\n'; + }); + + if (content === '') { + // No properties + content = indentation(indent) + '<' + type + '>\n'; + } else { + // Had properties + content = indentation(indent) + '<' + type + '\n' + content + indentation(indent) + '>\n'; } + } - function describeCollapsedElement(type, props, indent) { - // This function tries to fit the props into a single line for non-essential elements. - // We also ignore children because we're not going deeper. - var maxLength = maxRowLength - indent * 2 - type.length - 2; - var content = ""; + var serverChildren = serverProps.children; + var clientChildren = clientProps.children; - for (var propName in props) { - if (!props.hasOwnProperty(propName)) { - continue; - } + if (typeof serverChildren === 'string' || typeof serverChildren === 'number' || typeof serverChildren === 'bigint') { + // There's a diff of the children. + // $FlowFixMe[unsafe-addition] + var serverText = '' + serverChildren; + var clientText = ''; - if (propName === "children") { - // Ignored. - continue; - } + if (typeof clientChildren === 'string' || typeof clientChildren === 'number' || typeof clientChildren === 'bigint') { + // $FlowFixMe[unsafe-addition] + clientText = '' + clientChildren; + } - var propValue = describePropValue(props[propName], 15); - maxLength -= propName.length + propValue.length + 2; + content += describeTextDiff(clientText, serverText, indent + 1); + } else if (typeof clientChildren === 'string' || typeof clientChildren === 'number' || typeof clientChildren === 'bigint') { + // The client has children but it's not considered a difference from the server. + // $FlowFixMe[unsafe-addition] + content += describeTextDiff('' + clientChildren, undefined, indent + 1); + } - if (maxLength < 0) { - content += " ..."; - break; - } + return content; +} - content += " " + propName + "=" + propValue; - } +function describeSiblingFiber(fiber, indent) { + var type = describeFiberType(fiber); - return indentation(indent) + "<" + type + content + ">\n"; + if (type === null) { + // Skip this type of fiber. We currently treat this as a fragment + // so it's just part of the parent's children. + var flatContent = ''; + var childFiber = fiber.child; + + while (childFiber) { + flatContent += describeSiblingFiber(childFiber, indent); + childFiber = childFiber.sibling; } - function describeExpandedElement(type, props, rowPrefix) { - // This function tries to fit the props into a single line for non-essential elements. - // We also ignore children because we're not going deeper. - var remainingRowLength = maxRowLength - rowPrefix.length - type.length; // We add the properties to a set so we can choose later whether we'll put it on one - // line or multiple lines. + return flatContent; + } - var properties = []; + return indentation(indent) + '<' + type + '>' + '\n'; +} - for (var propName in props) { - if (!props.hasOwnProperty(propName)) { - continue; - } +function describeNode(node, indent) { + var skipToNode = findNotableNode(node, indent); - if (propName === "children") { - // Ignored. - continue; - } + if (skipToNode !== node && (node.children.length !== 1 || node.children[0] !== skipToNode)) { + return indentation(indent) + '...\n' + describeNode(skipToNode, indent + 1); + } // Prefix with any server components for context - var maxLength = maxRowLength - rowPrefix.length - propName.length - 1; - var propValue = describePropValue(props[propName], maxLength); - remainingRowLength -= propName.length + propValue.length + 2; - properties.push(propName + "=" + propValue); - } - if (properties.length === 0) { - return rowPrefix + "<" + type + ">\n"; - } else if (remainingRowLength > 0) { - // We can fit all on one row. - return rowPrefix + "<" + type + " " + properties.join(" ") + ">\n"; - } else { - // Split into one row per property: - return ( - rowPrefix + - "<" + - type + - "\n" + - rowPrefix + - " " + - properties.join("\n" + rowPrefix + " ") + - "\n" + - rowPrefix + - ">\n" - ); - } - } - - function describePropertiesDiff(clientObject, serverObject, indent) { - var properties = ""; - var remainingServerProperties = assign({}, serverObject); - - for (var propName in clientObject) { - if (!clientObject.hasOwnProperty(propName)) { - continue; - } + var parentContent = ''; + var debugInfo = node.fiber._debugInfo; - delete remainingServerProperties[propName]; - var maxLength = maxRowLength - indent * 2 - propName.length - 2; - var clientValue = clientObject[propName]; - var clientPropValue = describeValue(clientValue, maxLength); - - if (serverObject.hasOwnProperty(propName)) { - var serverValue = serverObject[propName]; - var serverPropValue = describeValue(serverValue, maxLength); - properties += - added(indent) + propName + ": " + clientPropValue + "\n"; - properties += - removed(indent) + propName + ": " + serverPropValue + "\n"; - } else { - properties += - added(indent) + propName + ": " + clientPropValue + "\n"; - } + if (debugInfo) { + for (var i = 0; i < debugInfo.length; i++) { + var serverComponentName = debugInfo[i].name; + + if (typeof serverComponentName === 'string') { + parentContent += indentation(indent) + '<' + serverComponentName + '>' + '\n'; + indent++; } + } + } // Self - for (var _propName in remainingServerProperties) { - if (!remainingServerProperties.hasOwnProperty(_propName)) { - continue; - } - var _maxLength = maxRowLength - indent * 2 - _propName.length - 2; + var selfContent = ''; // We use the pending props since we might be generating a diff before the complete phase + // when something throws. - var _serverValue = remainingServerProperties[_propName]; + var clientProps = node.fiber.pendingProps; - var _serverPropValue = describeValue(_serverValue, _maxLength); + if (node.fiber.tag === HostText) { + // Text Node + selfContent = describeTextDiff(clientProps, node.serverProps, indent); + } else { + var type = describeFiberType(node.fiber); - properties += - removed(indent) + _propName + ": " + _serverPropValue + "\n"; + if (type !== null) { + // Element Node + if (node.serverProps === undefined) { + // Just a reference node for context. + selfContent = describeCollapsedElement(type, clientProps, indent); + indent++; + } else if (node.serverProps === null) { + selfContent = describeExpandedElement(type, clientProps, added(indent)); // If this was an insertion we won't step down further. Any tail + // are considered siblings so we don't indent. + // TODO: Model this a little better. + } else if (typeof node.serverProps === 'string') { + { + error('Should not have matched a non HostText fiber to a Text node. This is a bug in React.'); + } + } else { + selfContent = describeElementDiff(type, clientProps, node.serverProps, indent); + indent++; } - - return properties; } + } // Compute children - function describeElementDiff(type, clientProps, serverProps, indent) { - var content = ""; // Maps any previously unmatched lower case server prop name to its full prop name - var serverPropNames = new Map(); + var childContent = ''; + var childFiber = node.fiber.child; + var diffIdx = 0; - for (var propName in serverProps) { - if (!serverProps.hasOwnProperty(propName)) { - continue; - } + while (childFiber && diffIdx < node.children.length) { + var childNode = node.children[diffIdx]; - serverPropNames.set(propName.toLowerCase(), propName); - } + if (childNode.fiber === childFiber) { + // This was a match in the diff. + childContent += describeNode(childNode, indent); + diffIdx++; + } else { + // This is an unrelated previous sibling. + childContent += describeSiblingFiber(childFiber, indent); + } - if (serverPropNames.size === 1 && serverPropNames.has("children")) { - content += describeExpandedElement( - type, - clientProps, - indentation(indent) - ); - } else { - for (var _propName2 in clientProps) { - if (!clientProps.hasOwnProperty(_propName2)) { - continue; - } + childFiber = childFiber.sibling; + } - if (_propName2 === "children") { - // Handled below. - continue; - } + if (childFiber && node.children.length > 0) { + // If we had any further siblings after the last mismatch, we can't be sure if it's + // actually a valid match since it might not have found a match. So we exclude next + // siblings to avoid confusion. + childContent += indentation(indent) + '...' + '\n'; + } // Deleted tail nodes - var maxLength = - maxRowLength - (indent + 1) * 2 - _propName2.length - 1; - var serverPropName = serverPropNames.get(_propName2.toLowerCase()); - - if (serverPropName !== undefined) { - serverPropNames.delete(_propName2.toLowerCase()); // There's a diff here. - - var clientValue = clientProps[_propName2]; - var serverValue = serverProps[serverPropName]; - var clientPropValue = describePropValue(clientValue, maxLength); - var serverPropValue = describePropValue(serverValue, maxLength); - - if ( - typeof clientValue === "object" && - clientValue !== null && - typeof serverValue === "object" && - serverValue !== null && - objectName(clientValue) === "Object" && - objectName(serverValue) === "Object" && // Only do the diff if the object has a lot of keys or was shortened. - (Object.keys(clientValue).length > 2 || - Object.keys(serverValue).length > 2 || - clientPropValue.indexOf("...") > -1 || - serverPropValue.indexOf("...") > -1) - ) { - // We're comparing two plain objects. We can diff the nested objects instead. - content += - indentation(indent + 1) + - _propName2 + - "={{\n" + - describePropertiesDiff(clientValue, serverValue, indent + 2) + - indentation(indent + 1) + - "}}\n"; - } else { - content += - added(indent + 1) + _propName2 + "=" + clientPropValue + "\n"; - content += - removed(indent + 1) + _propName2 + "=" + serverPropValue + "\n"; - } - } else { - // Considered equal. - content += - indentation(indent + 1) + - _propName2 + - "=" + - describePropValue(clientProps[_propName2], maxLength) + - "\n"; - } - } - serverPropNames.forEach(function (propName) { - if (propName === "children") { - // Handled below. - return; - } + var serverTail = node.serverTail; - var maxLength = maxRowLength - (indent + 1) * 2 - propName.length - 1; - content += - removed(indent + 1) + - propName + - "=" + - describePropValue(serverProps[propName], maxLength) + - "\n"; - }); + for (var _i = 0; _i < serverTail.length; _i++) { + var tailNode = serverTail[_i]; - if (content === "") { - // No properties - content = indentation(indent) + "<" + type + ">\n"; - } else { - // Had properties - content = - indentation(indent) + - "<" + - type + - "\n" + - content + - indentation(indent) + - ">\n"; - } - } + if (typeof tailNode === 'string') { + // Removed text node + childContent += removed(indent) + describeTextNode(tailNode, maxRowLength - indent * 2) + '\n'; + } else { + // Removed element + childContent += describeExpandedElement(tailNode.type, tailNode.props, removed(indent)); + } + } - var serverChildren = serverProps.children; - var clientChildren = clientProps.children; - - if ( - typeof serverChildren === "string" || - typeof serverChildren === "number" || - typeof serverChildren === "bigint" - ) { - // There's a diff of the children. - // $FlowFixMe[unsafe-addition] - var serverText = "" + serverChildren; - var clientText = ""; - - if ( - typeof clientChildren === "string" || - typeof clientChildren === "number" || - typeof clientChildren === "bigint" - ) { - // $FlowFixMe[unsafe-addition] - clientText = "" + clientChildren; - } + return parentContent + selfContent + childContent; +} - content += describeTextDiff(clientText, serverText, indent + 1); - } else if ( - typeof clientChildren === "string" || - typeof clientChildren === "number" || - typeof clientChildren === "bigint" - ) { - // The client has children but it's not considered a difference from the server. - // $FlowFixMe[unsafe-addition] - content += describeTextDiff("" + clientChildren, undefined, indent + 1); - } +function describeDiff(rootNode) { + try { + return '\n\n' + describeNode(rootNode, 0); + } catch (x) { + return ''; + } +} - return content; - } +var isHydrating = false; // This flag allows for warning supression when we expect there to be mismatches - function describeSiblingFiber(fiber, indent) { - var type = describeFiberType(fiber); +var hydrationDiffRootDEV = null; // Hydration errors that were thrown inside this boundary - if (type === null) { - // Skip this type of fiber. We currently treat this as a fragment - // so it's just part of the parent's children. - var flatContent = ""; - var childFiber = fiber.child; +var hydrationErrors = null; - while (childFiber) { - flatContent += describeSiblingFiber(childFiber, indent); - childFiber = childFiber.sibling; - } +function prepareToHydrateHostInstance(fiber, hostContext) { + { + throw new Error('Expected prepareToHydrateHostInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - return flatContent; - } +function prepareToHydrateHostTextInstance(fiber) { + { + throw new Error('Expected prepareToHydrateHostTextInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - return indentation(indent) + "<" + type + ">" + "\n"; - } +function prepareToHydrateHostSuspenseInstance(fiber) { + { + throw new Error('Expected prepareToHydrateHostSuspenseInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - function describeNode(node, indent) { - var skipToNode = findNotableNode(node, indent); +function popHydrationState(fiber) { + { + return false; + } +} - if ( - skipToNode !== node && - (node.children.length !== 1 || node.children[0] !== skipToNode) - ) { - return ( - indentation(indent) + "...\n" + describeNode(skipToNode, indent + 1) - ); - } // Prefix with any server components for context +function upgradeHydrationErrorsToRecoverable() { + if (hydrationErrors !== null) { + // Successfully completed a forced client render. The errors that occurred + // during the hydration attempt are now recovered. We will log them in + // commit phase, once the entire tree has finished. + queueRecoverableErrors(hydrationErrors); + hydrationErrors = null; + } +} - var parentContent = ""; - var debugInfo = node.fiber._debugInfo; +function getIsHydrating() { + return isHydrating; +} - if (debugInfo) { - for (var i = 0; i < debugInfo.length; i++) { - var serverComponentName = debugInfo[i].name; +function queueHydrationError(error) { + if (hydrationErrors === null) { + hydrationErrors = [error]; + } else { + hydrationErrors.push(error); + } +} +function emitPendingHydrationWarnings() { + { + // If we haven't yet thrown any hydration errors by the time we reach the end we've successfully + // hydrated, however, we might still have DEV-only mismatches that we log now. + var diffRoot = hydrationDiffRootDEV; - if (typeof serverComponentName === "string") { - parentContent += - indentation(indent) + "<" + serverComponentName + ">" + "\n"; - indent++; - } - } - } // Self + if (diffRoot !== null) { + hydrationDiffRootDEV = null; + var diff = describeDiff(diffRoot); - var selfContent = ""; // We use the pending props since we might be generating a diff before the complete phase - // when something throws. + error("A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. This won't be patched up. " + 'This can happen if a SSR-ed Client Component used:\n' + '\n' + "- A server/client branch `if (typeof window !== 'undefined')`.\n" + "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + "- Date formatting in a user's locale which doesn't match the server.\n" + '- External changing data without sending a snapshot of it along with the HTML.\n' + '- Invalid HTML tag nesting.\n' + '\n' + 'It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n' + '\n' + '%s%s', 'https://react.dev/link/hydration-mismatch', diff); + } + } +} - var clientProps = node.fiber.pendingProps; +// we wait until the current render is over (either finished or interrupted) +// before adding it to the fiber/hook queue. Push to this array so we can +// access the queue, fiber, update, et al later. + +var concurrentQueues = []; +var concurrentQueuesIndex = 0; +var concurrentlyUpdatedLanes = NoLanes; +function finishQueueingConcurrentUpdates() { + var endIndex = concurrentQueuesIndex; + concurrentQueuesIndex = 0; + concurrentlyUpdatedLanes = NoLanes; + var i = 0; + + while (i < endIndex) { + var fiber = concurrentQueues[i]; + concurrentQueues[i++] = null; + var queue = concurrentQueues[i]; + concurrentQueues[i++] = null; + var update = concurrentQueues[i]; + concurrentQueues[i++] = null; + var lane = concurrentQueues[i]; + concurrentQueues[i++] = null; + + if (queue !== null && update !== null) { + var pending = queue.pending; - if (node.fiber.tag === HostText) { - // Text Node - selfContent = describeTextDiff(clientProps, node.serverProps, indent); - } else { - var type = describeFiberType(node.fiber); - - if (type !== null) { - // Element Node - if (node.serverProps === undefined) { - // Just a reference node for context. - selfContent = describeCollapsedElement(type, clientProps, indent); - indent++; - } else if (node.serverProps === null) { - selfContent = describeExpandedElement( - type, - clientProps, - added(indent) - ); // If this was an insertion we won't step down further. Any tail - // are considered siblings so we don't indent. - // TODO: Model this a little better. - } else if (typeof node.serverProps === "string") { - { - error( - "Should not have matched a non HostText fiber to a Text node. This is a bug in React." - ); - } - } else { - selfContent = describeElementDiff( - type, - clientProps, - node.serverProps, - indent - ); - indent++; - } - } - } // Compute children + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } + + queue.pending = update; + } - var childContent = ""; - var childFiber = node.fiber.child; - var diffIdx = 0; + if (lane !== NoLane) { + markUpdateLaneFromFiberToRoot(fiber, update, lane); + } + } +} +function getConcurrentlyUpdatedLanes() { + return concurrentlyUpdatedLanes; +} - while (childFiber && diffIdx < node.children.length) { - var childNode = node.children[diffIdx]; +function enqueueUpdate$1(fiber, queue, update, lane) { + // Don't update the `childLanes` on the return path yet. If we already in + // the middle of rendering, wait until after it has completed. + concurrentQueues[concurrentQueuesIndex++] = fiber; + concurrentQueues[concurrentQueuesIndex++] = queue; + concurrentQueues[concurrentQueuesIndex++] = update; + concurrentQueues[concurrentQueuesIndex++] = lane; + concurrentlyUpdatedLanes = mergeLanes(concurrentlyUpdatedLanes, lane); // The fiber's `lane` field is used in some places to check if any work is + // scheduled, to perform an eager bailout, so we need to update it immediately. + // TODO: We should probably move this to the "shared" queue instead. + + fiber.lanes = mergeLanes(fiber.lanes, lane); + var alternate = fiber.alternate; + + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, lane); + } +} - if (childNode.fiber === childFiber) { - // This was a match in the diff. - childContent += describeNode(childNode, indent); - diffIdx++; - } else { - // This is an unrelated previous sibling. - childContent += describeSiblingFiber(childFiber, indent); - } +function enqueueConcurrentHookUpdate(fiber, queue, update, lane) { + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); + return getRootForUpdatedFiber(fiber); +} +function enqueueConcurrentHookUpdateAndEagerlyBailout(fiber, queue, update) { + // This function is used to queue an update that doesn't need a rerender. The + // only reason we queue it is in case there's a subsequent higher priority + // update that causes it to be rebased. + var lane = NoLane; + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); // Usually we can rely on the upcoming render phase to process the concurrent + // queue. However, since this is a bail out, we're not scheduling any work + // here. So the update we just queued will leak until something else happens + // to schedule work (if ever). + // + // Check if we're currently in the middle of rendering a tree, and if not, + // process the queue immediately to prevent a leak. + + var isConcurrentlyRendering = getWorkInProgressRoot() !== null; + + if (!isConcurrentlyRendering) { + finishQueueingConcurrentUpdates(); + } +} +function enqueueConcurrentClassUpdate(fiber, queue, update, lane) { + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); + return getRootForUpdatedFiber(fiber); +} +function enqueueConcurrentRenderForLane(fiber, lane) { + enqueueUpdate$1(fiber, null, null, lane); + return getRootForUpdatedFiber(fiber); +} // Calling this function outside this module should only be done for backwards +// compatibility and should always be accompanied by a warning. + +function unsafe_markUpdateLaneFromFiberToRoot(sourceFiber, lane) { + // NOTE: For Hyrum's Law reasons, if an infinite update loop is detected, it + // should throw before `markUpdateLaneFromFiberToRoot` is called. But this is + // undefined behavior and we can change it if we need to; it just so happens + // that, at the time of this writing, there's an internal product test that + // happens to rely on this. + var root = getRootForUpdatedFiber(sourceFiber); + markUpdateLaneFromFiberToRoot(sourceFiber, null, lane); + return root; +} - childFiber = childFiber.sibling; - } +function markUpdateLaneFromFiberToRoot(sourceFiber, update, lane) { + // Update the source fiber's lanes + sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane); + var alternate = sourceFiber.alternate; - if (childFiber && node.children.length > 0) { - // If we had any further siblings after the last mismatch, we can't be sure if it's - // actually a valid match since it might not have found a match. So we exclude next - // siblings to avoid confusion. - childContent += indentation(indent) + "..." + "\n"; - } // Deleted tail nodes + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, lane); + } // Walk the parent path to the root and update the child lanes. - var serverTail = node.serverTail; - for (var _i = 0; _i < serverTail.length; _i++) { - var tailNode = serverTail[_i]; + var isHidden = false; + var parent = sourceFiber.return; + var node = sourceFiber; - if (typeof tailNode === "string") { - // Removed text node - childContent += - removed(indent) + - describeTextNode(tailNode, maxRowLength - indent * 2) + - "\n"; - } else { - // Removed element - childContent += describeExpandedElement( - tailNode.type, - tailNode.props, - removed(indent) - ); - } - } + while (parent !== null) { + parent.childLanes = mergeLanes(parent.childLanes, lane); + alternate = parent.alternate; - return parentContent + selfContent + childContent; + if (alternate !== null) { + alternate.childLanes = mergeLanes(alternate.childLanes, lane); } - function describeDiff(rootNode) { - try { - return "\n\n" + describeNode(rootNode, 0); - } catch (x) { - return ""; + if (parent.tag === OffscreenComponent) { + // Check if this offscreen boundary is currently hidden. + // + // The instance may be null if the Offscreen parent was unmounted. Usually + // the parent wouldn't be reachable in that case because we disconnect + // fibers from the tree when they are deleted. However, there's a weird + // edge case where setState is called on a fiber that was interrupted + // before it ever mounted. Because it never mounts, it also never gets + // deleted. Because it never gets deleted, its return pointer never gets + // disconnected. Which means it may be attached to a deleted Offscreen + // parent node. (This discovery suggests it may be better for memory usage + // if we don't attach the `return` pointer until the commit phase, though + // in order to do that we'd need some other way to track the return + // pointer during the initial render, like on the stack.) + // + // This case is always accompanied by a warning, but we still need to + // account for it. (There may be other cases that we haven't discovered, + // too.) + var offscreenInstance = parent.stateNode; + + if (offscreenInstance !== null && !(offscreenInstance._visibility & OffscreenVisible)) { + isHidden = true; } } - var isHydrating = false; // This flag allows for warning supression when we expect there to be mismatches + node = parent; + parent = parent.return; + } - var hydrationDiffRootDEV = null; // Hydration errors that were thrown inside this boundary + if (isHidden && update !== null && node.tag === HostRoot) { + var root = node.stateNode; + markHiddenUpdate(root, update, lane); + } +} - var hydrationErrors = null; +function getRootForUpdatedFiber(sourceFiber) { + // TODO: We will detect and infinite update loop and throw even if this fiber + // has already unmounted. This isn't really necessary but it happens to be the + // current behavior we've used for several release cycles. Consider not + // performing this check if the updated fiber already unmounted, since it's + // not possible for that to cause an infinite update loop. + throwIfInfiniteUpdateLoopDetected(); // When a setState happens, we must ensure the root is scheduled. Because + // update queues do not have a backpointer to the root, the only way to do + // this currently is to walk up the return path. This used to not be a big + // deal because we would have to walk up the return path to set + // the `childLanes`, anyway, but now those two traversals happen at + // different times. + // TODO: Consider adding a `root` backpointer on the update queue. + + detectUpdateOnUnmountedFiber(sourceFiber, sourceFiber); + var node = sourceFiber; + var parent = node.return; + + while (parent !== null) { + detectUpdateOnUnmountedFiber(sourceFiber, node); + node = parent; + parent = node.return; + } + + return node.tag === HostRoot ? node.stateNode : null; +} - function prepareToHydrateHostInstance(fiber, hostContext) { - { - throw new Error( - "Expected prepareToHydrateHostInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } +function detectUpdateOnUnmountedFiber(sourceFiber, parent) { + { + var alternate = parent.alternate; - function prepareToHydrateHostTextInstance(fiber) { - { - throw new Error( - "Expected prepareToHydrateHostTextInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } + if (alternate === null && (parent.flags & (Placement | Hydrating)) !== NoFlags$1) { + warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); } + } +} - function prepareToHydrateHostSuspenseInstance(fiber) { - { - throw new Error( - "Expected prepareToHydrateHostSuspenseInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } +// there's only a single root, but we do support multi root apps, hence this +// extra complexity. But this module is optimized for the single root case. + +var firstScheduledRoot = null; +var lastScheduledRoot = null; // Used to prevent redundant mircotasks from being scheduled. + +var didScheduleMicrotask = false; // `act` "microtasks" are scheduled on the `act` queue instead of an actual +// microtask, so we have to dedupe those separately. This wouldn't be an issue +// if we required all `act` calls to be awaited, which we might in the future. + +var didScheduleMicrotask_act = false; // Used to quickly bail out of flushSync if there's no sync work to do. + +var mightHavePendingSyncWork = false; +var isFlushingWork = false; +var currentEventTransitionLane = NoLane; +function ensureRootIsScheduled(root) { + // This function is called whenever a root receives an update. It does two + // things 1) it ensures the root is in the root schedule, and 2) it ensures + // there's a pending microtask to process the root schedule. + // + // Most of the actual scheduling logic does not happen until + // `scheduleTaskForRootDuringMicrotask` runs. + // Add the root to the schedule + if (root === lastScheduledRoot || root.next !== null) ; else { + if (lastScheduledRoot === null) { + firstScheduledRoot = lastScheduledRoot = root; + } else { + lastScheduledRoot.next = root; + lastScheduledRoot = root; + } + } // Any time a root received an update, we set this to true until the next time + // we process the schedule. If it's false, then we can quickly exit flushSync + // without consulting the schedule. + + + mightHavePendingSyncWork = true; // At the end of the current event, go through each of the roots and ensure + // there's a task scheduled for each one at the correct priority. + + if (ReactSharedInternals.actQueue !== null) { + // We're inside an `act` scope. + if (!didScheduleMicrotask_act) { + didScheduleMicrotask_act = true; + scheduleImmediateTask(processRootScheduleInMicrotask); + } + } else { + if (!didScheduleMicrotask) { + didScheduleMicrotask = true; + scheduleImmediateTask(processRootScheduleInMicrotask); + } + } + + { + // While this flag is disabled, we schedule the render task immediately + // instead of waiting a microtask. + // TODO: We need to land enableDeferRootSchedulingToMicrotask ASAP to + // unblock additional features we have planned. + scheduleTaskForRootDuringMicrotask(root, now$1()); + } + + if (ReactSharedInternals.isBatchingLegacy && root.tag === LegacyRoot) { + // Special `act` case: Record whenever a legacy update is scheduled. + ReactSharedInternals.didScheduleLegacyUpdate = true; + } +} +function flushSyncWorkOnAllRoots() { + // This is allowed to be called synchronously, but the caller should check + // the execution context first. + flushSyncWorkAcrossRoots_impl(false); +} +function flushSyncWorkOnLegacyRootsOnly() { + // This is allowed to be called synchronously, but the caller should check + // the execution context first. + { + flushSyncWorkAcrossRoots_impl(true); + } +} - function popHydrationState(fiber) { - { - return false; - } - } +function flushSyncWorkAcrossRoots_impl(onlyLegacy) { + if (isFlushingWork) { + // Prevent reentrancy. + // TODO: Is this overly defensive? The callers must check the execution + // context first regardless. + return; + } - function upgradeHydrationErrorsToRecoverable() { - if (hydrationErrors !== null) { - // Successfully completed a forced client render. The errors that occurred - // during the hydration attempt are now recovered. We will log them in - // commit phase, once the entire tree has finished. - queueRecoverableErrors(hydrationErrors); - hydrationErrors = null; - } - } + if (!mightHavePendingSyncWork) { + // Fast path. There's no sync work to do. + return; + } // There may or may not be synchronous work scheduled. Let's check. - function getIsHydrating() { - return isHydrating; - } - function queueHydrationError(error) { - if (hydrationErrors === null) { - hydrationErrors = [error]; - } else { - hydrationErrors.push(error); - } - } - function emitPendingHydrationWarnings() { - { - // If we haven't yet thrown any hydration errors by the time we reach the end we've successfully - // hydrated, however, we might still have DEV-only mismatches that we log now. - var diffRoot = hydrationDiffRootDEV; - - if (diffRoot !== null) { - hydrationDiffRootDEV = null; - var diff = describeDiff(diffRoot); - - error( - "A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. This won't be patched up. " + - "This can happen if a SSR-ed Client Component used:\n" + - "\n" + - "- A server/client branch `if (typeof window !== 'undefined')`.\n" + - "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + - "- Date formatting in a user's locale which doesn't match the server.\n" + - "- External changing data without sending a snapshot of it along with the HTML.\n" + - "- Invalid HTML tag nesting.\n" + - "\n" + - "It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n" + - "\n" + - "%s%s", - "https://react.dev/link/hydration-mismatch", - diff - ); - } - } - } + var didPerformSomeWork; + isFlushingWork = true; - // we wait until the current render is over (either finished or interrupted) - // before adding it to the fiber/hook queue. Push to this array so we can - // access the queue, fiber, update, et al later. - - var concurrentQueues = []; - var concurrentQueuesIndex = 0; - var concurrentlyUpdatedLanes = NoLanes; - function finishQueueingConcurrentUpdates() { - var endIndex = concurrentQueuesIndex; - concurrentQueuesIndex = 0; - concurrentlyUpdatedLanes = NoLanes; - var i = 0; - - while (i < endIndex) { - var fiber = concurrentQueues[i]; - concurrentQueues[i++] = null; - var queue = concurrentQueues[i]; - concurrentQueues[i++] = null; - var update = concurrentQueues[i]; - concurrentQueues[i++] = null; - var lane = concurrentQueues[i]; - concurrentQueues[i++] = null; - - if (queue !== null && update !== null) { - var pending = queue.pending; - - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + do { + didPerformSomeWork = false; + var root = firstScheduledRoot; - queue.pending = update; - } + while (root !== null) { + if (onlyLegacy && (root.tag !== LegacyRoot)) ; else { + var workInProgressRoot = getWorkInProgressRoot(); + var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); + var nextLanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); - if (lane !== NoLane) { - markUpdateLaneFromFiberToRoot(fiber, update, lane); + if (includesSyncLane(nextLanes)) { + // This root has pending sync work. Flush it now. + didPerformSomeWork = true; + performSyncWorkOnRoot(root, nextLanes); } } - } - function getConcurrentlyUpdatedLanes() { - return concurrentlyUpdatedLanes; - } - - function enqueueUpdate$1(fiber, queue, update, lane) { - // Don't update the `childLanes` on the return path yet. If we already in - // the middle of rendering, wait until after it has completed. - concurrentQueues[concurrentQueuesIndex++] = fiber; - concurrentQueues[concurrentQueuesIndex++] = queue; - concurrentQueues[concurrentQueuesIndex++] = update; - concurrentQueues[concurrentQueuesIndex++] = lane; - concurrentlyUpdatedLanes = mergeLanes(concurrentlyUpdatedLanes, lane); // The fiber's `lane` field is used in some places to check if any work is - // scheduled, to perform an eager bailout, so we need to update it immediately. - // TODO: We should probably move this to the "shared" queue instead. - fiber.lanes = mergeLanes(fiber.lanes, lane); - var alternate = fiber.alternate; + root = root.next; + } + } while (didPerformSomeWork); - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, lane); - } - } - - function enqueueConcurrentHookUpdate(fiber, queue, update, lane) { - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); - return getRootForUpdatedFiber(fiber); - } - function enqueueConcurrentHookUpdateAndEagerlyBailout( - fiber, - queue, - update - ) { - // This function is used to queue an update that doesn't need a rerender. The - // only reason we queue it is in case there's a subsequent higher priority - // update that causes it to be rebased. - var lane = NoLane; - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); // Usually we can rely on the upcoming render phase to process the concurrent - // queue. However, since this is a bail out, we're not scheduling any work - // here. So the update we just queued will leak until something else happens - // to schedule work (if ever). - // - // Check if we're currently in the middle of rendering a tree, and if not, - // process the queue immediately to prevent a leak. + isFlushingWork = false; +} - var isConcurrentlyRendering = getWorkInProgressRoot() !== null; +function processRootScheduleInMicrotask() { + // This function is always called inside a microtask. It should never be + // called synchronously. + didScheduleMicrotask = false; - if (!isConcurrentlyRendering) { - finishQueueingConcurrentUpdates(); - } - } - function enqueueConcurrentClassUpdate(fiber, queue, update, lane) { - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); - return getRootForUpdatedFiber(fiber); - } - function enqueueConcurrentRenderForLane(fiber, lane) { - enqueueUpdate$1(fiber, null, null, lane); - return getRootForUpdatedFiber(fiber); - } // Calling this function outside this module should only be done for backwards - // compatibility and should always be accompanied by a warning. + { + didScheduleMicrotask_act = false; + } // We'll recompute this as we iterate through all the roots and schedule them. - function unsafe_markUpdateLaneFromFiberToRoot(sourceFiber, lane) { - // NOTE: For Hyrum's Law reasons, if an infinite update loop is detected, it - // should throw before `markUpdateLaneFromFiberToRoot` is called. But this is - // undefined behavior and we can change it if we need to; it just so happens - // that, at the time of this writing, there's an internal product test that - // happens to rely on this. - var root = getRootForUpdatedFiber(sourceFiber); - markUpdateLaneFromFiberToRoot(sourceFiber, null, lane); - return root; - } - function markUpdateLaneFromFiberToRoot(sourceFiber, update, lane) { - // Update the source fiber's lanes - sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane); - var alternate = sourceFiber.alternate; + mightHavePendingSyncWork = false; + var currentTime = now$1(); + var prev = null; + var root = firstScheduledRoot; - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, lane); - } // Walk the parent path to the root and update the child lanes. + while (root !== null) { + var next = root.next; - var isHidden = false; - var parent = sourceFiber.return; - var node = sourceFiber; + if (currentEventTransitionLane !== NoLane && shouldAttemptEagerTransition()) { + // A transition was scheduled during an event, but we're going to try to + // render it synchronously anyway. We do this during a popstate event to + // preserve the scroll position of the previous page. + upgradePendingLaneToSync(root, currentEventTransitionLane); + } - while (parent !== null) { - parent.childLanes = mergeLanes(parent.childLanes, lane); - alternate = parent.alternate; + var nextLanes = scheduleTaskForRootDuringMicrotask(root, currentTime); - if (alternate !== null) { - alternate.childLanes = mergeLanes(alternate.childLanes, lane); - } + if (nextLanes === NoLane) { + // This root has no more pending work. Remove it from the schedule. To + // guard against subtle reentrancy bugs, this microtask is the only place + // we do this — you can add roots to the schedule whenever, but you can + // only remove them here. + // Null this out so we know it's been removed from the schedule. + root.next = null; - if (parent.tag === OffscreenComponent) { - // Check if this offscreen boundary is currently hidden. - // - // The instance may be null if the Offscreen parent was unmounted. Usually - // the parent wouldn't be reachable in that case because we disconnect - // fibers from the tree when they are deleted. However, there's a weird - // edge case where setState is called on a fiber that was interrupted - // before it ever mounted. Because it never mounts, it also never gets - // deleted. Because it never gets deleted, its return pointer never gets - // disconnected. Which means it may be attached to a deleted Offscreen - // parent node. (This discovery suggests it may be better for memory usage - // if we don't attach the `return` pointer until the commit phase, though - // in order to do that we'd need some other way to track the return - // pointer during the initial render, like on the stack.) - // - // This case is always accompanied by a warning, but we still need to - // account for it. (There may be other cases that we haven't discovered, - // too.) - var offscreenInstance = parent.stateNode; - - if ( - offscreenInstance !== null && - !(offscreenInstance._visibility & OffscreenVisible) - ) { - isHidden = true; - } - } + if (prev === null) { + // This is the new head of the list + firstScheduledRoot = next; + } else { + prev.next = next; + } - node = parent; - parent = parent.return; + if (next === null) { + // This is the new tail of the list + lastScheduledRoot = prev; } + } else { + // This root still has work. Keep it in the list. + prev = root; - if (isHidden && update !== null && node.tag === HostRoot) { - var root = node.stateNode; - markHiddenUpdate(root, update, lane); + if (includesSyncLane(nextLanes)) { + mightHavePendingSyncWork = true; } } - function getRootForUpdatedFiber(sourceFiber) { - // TODO: We will detect and infinite update loop and throw even if this fiber - // has already unmounted. This isn't really necessary but it happens to be the - // current behavior we've used for several release cycles. Consider not - // performing this check if the updated fiber already unmounted, since it's - // not possible for that to cause an infinite update loop. - throwIfInfiniteUpdateLoopDetected(); // When a setState happens, we must ensure the root is scheduled. Because - // update queues do not have a backpointer to the root, the only way to do - // this currently is to walk up the return path. This used to not be a big - // deal because we would have to walk up the return path to set - // the `childLanes`, anyway, but now those two traversals happen at - // different times. - // TODO: Consider adding a `root` backpointer on the update queue. + root = next; + } - detectUpdateOnUnmountedFiber(sourceFiber, sourceFiber); - var node = sourceFiber; - var parent = node.return; + currentEventTransitionLane = NoLane; // At the end of the microtask, flush any pending synchronous work. This has + // to come at the end, because it does actual rendering work that might throw. - while (parent !== null) { - detectUpdateOnUnmountedFiber(sourceFiber, node); - node = parent; - parent = node.return; - } + flushSyncWorkOnAllRoots(); +} - return node.tag === HostRoot ? node.stateNode : null; - } +function scheduleTaskForRootDuringMicrotask(root, currentTime) { + // This function is always called inside a microtask, or at the very end of a + // rendering task right before we yield to the main thread. It should never be + // called synchronously. + // + // TODO: Unless enableDeferRootSchedulingToMicrotask is off. We need to land + // that ASAP to unblock additional features we have planned. + // + // This function also never performs React work synchronously; it should + // only schedule work to be performed later, in a separate task or microtask. + // Check if any lanes are being starved by other work. If so, mark them as + // expired so we know to work on those next. + markStarvedLanesAsExpired(root, currentTime); // Determine the next lanes to work on, and their priority. + + var workInProgressRoot = getWorkInProgressRoot(); + var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); + var nextLanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); + var existingCallbackNode = root.callbackNode; + + if ( // Check if there's nothing to work on + nextLanes === NoLanes || // If this root is currently suspended and waiting for data to resolve, don't + // schedule a task to render it. We'll either wait for a ping, or wait to + // receive an update. + // + // Suspended render phase + root === workInProgressRoot && isWorkLoopSuspendedOnData() || // Suspended commit phase + root.cancelPendingCommit !== null) { + // Fast path: There's nothing to work on. + if (existingCallbackNode !== null) { + cancelCallback(existingCallbackNode); + } + + root.callbackNode = null; + root.callbackPriority = NoLane; + return NoLane; + } // Schedule a new callback in the host environment. + + + if (includesSyncLane(nextLanes)) { + // Synchronous work is always flushed at the end of the microtask, so we + // don't need to schedule an additional task. + if (existingCallbackNode !== null) { + cancelCallback(existingCallbackNode); + } + + root.callbackPriority = SyncLane; + root.callbackNode = null; + return SyncLane; + } else { + // We use the highest priority lane to represent the priority of the callback. + var existingCallbackPriority = root.callbackPriority; + var newCallbackPriority = getHighestPriorityLane(nextLanes); + + if (newCallbackPriority === existingCallbackPriority && // Special case related to `act`. If the currently scheduled task is a + // Scheduler task, rather than an `act` task, cancel it and re-schedule + // on the `act` queue. + !(ReactSharedInternals.actQueue !== null && existingCallbackNode !== fakeActCallbackNode$1)) { + // The priority hasn't changed. We can reuse the existing task. + return newCallbackPriority; + } else { + // Cancel the existing callback. We'll schedule a new one below. + cancelCallback(existingCallbackNode); + } + + var schedulerPriorityLevel; + + switch (lanesToEventPriority(nextLanes)) { + case DiscreteEventPriority: + schedulerPriorityLevel = ImmediatePriority; + break; + + case ContinuousEventPriority: + schedulerPriorityLevel = UserBlockingPriority; + break; + + case DefaultEventPriority: + schedulerPriorityLevel = NormalPriority$1; + break; + + case IdleEventPriority: + schedulerPriorityLevel = IdlePriority; + break; + + default: + schedulerPriorityLevel = NormalPriority$1; + break; + } + + var newCallbackNode = scheduleCallback$2(schedulerPriorityLevel, performConcurrentWorkOnRoot.bind(null, root)); + root.callbackPriority = newCallbackPriority; + root.callbackNode = newCallbackNode; + return newCallbackPriority; + } +} - function detectUpdateOnUnmountedFiber(sourceFiber, parent) { - { - var alternate = parent.alternate; +function getContinuationForRoot(root, originalCallbackNode) { + // This is called at the end of `performConcurrentWorkOnRoot` to determine + // if we need to schedule a continuation task. + // + // Usually `scheduleTaskForRootDuringMicrotask` only runs inside a microtask; + // however, since most of the logic for determining if we need a continuation + // versus a new task is the same, we cheat a bit and call it here. This is + // only safe to do because we know we're at the end of the browser task. + // So although it's not an actual microtask, it might as well be. + scheduleTaskForRootDuringMicrotask(root, now$1()); + + if (root.callbackNode === originalCallbackNode) { + // The task node scheduled for this root is the same one that's + // currently executed. Need to return a continuation. + return performConcurrentWorkOnRoot.bind(null, root); + } + + return null; +} +var fakeActCallbackNode$1 = {}; + +function scheduleCallback$2(priorityLevel, callback) { + if (ReactSharedInternals.actQueue !== null) { + // Special case: We're inside an `act` scope (a testing utility). + // Instead of scheduling work in the host environment, add it to a + // fake internal queue that's managed by the `act` implementation. + ReactSharedInternals.actQueue.push(callback); + return fakeActCallbackNode$1; + } else { + return scheduleCallback$3(priorityLevel, callback); + } +} - if ( - alternate === null && - (parent.flags & (Placement | Hydrating)) !== NoFlags$1 - ) { - warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); - } - } - } +function cancelCallback(callbackNode) { + if (callbackNode === fakeActCallbackNode$1) ; else if (callbackNode !== null) { + cancelCallback$1(callbackNode); + } +} - // there's only a single root, but we do support multi root apps, hence this - // extra complexity. But this module is optimized for the single root case. +function scheduleImmediateTask(cb) { + if (ReactSharedInternals.actQueue !== null) { + // Special case: Inside an `act` scope, we push microtasks to the fake `act` + // callback queue. This is because we currently support calling `act` + // without awaiting the result. The plan is to deprecate that, and require + // that you always await the result so that the microtasks have a chance to + // run. But it hasn't happened yet. + ReactSharedInternals.actQueue.push(function () { + cb(); + return null; + }); + } // TODO: Can we land supportsMicrotasks? Which environments don't support it? + // Alternatively, can we move this check to the host config? - var firstScheduledRoot = null; - var lastScheduledRoot = null; // Used to prevent redundant mircotasks from being scheduled. - var didScheduleMicrotask = false; // `act` "microtasks" are scheduled on the `act` queue instead of an actual - // microtask, so we have to dedupe those separately. This wouldn't be an issue - // if we required all `act` calls to be awaited, which we might in the future. + { + // If microtasks are not supported, use Scheduler. + scheduleCallback$3(ImmediatePriority, cb); + } +} - var didScheduleMicrotask_act = false; // Used to quickly bail out of flushSync if there's no sync work to do. +function requestTransitionLane( // This argument isn't used, it's only here to encourage the caller to +// check that it's inside a transition before calling this function. +// TODO: Make this non-nullable. Requires a tweak to useOptimistic. +transition) { + // The algorithm for assigning an update to a lane should be stable for all + // updates at the same priority within the same event. To do this, the + // inputs to the algorithm must be the same. + // + // The trick we use is to cache the first of each of these inputs within an + // event. Then reset the cached values once we can be sure the event is + // over. Our heuristic for that is whenever we enter a concurrent work loop. + if (currentEventTransitionLane === NoLane) { + // All transitions within the same event are assigned the same lane. + currentEventTransitionLane = claimNextTransitionLane(); + } + + return currentEventTransitionLane; +} - var mightHavePendingSyncWork = false; - var isFlushingWork = false; - var currentEventTransitionLane = NoLane; - function ensureRootIsScheduled(root) { - // This function is called whenever a root receives an update. It does two - // things 1) it ensures the root is in the root schedule, and 2) it ensures - // there's a pending microtask to process the root schedule. - // - // Most of the actual scheduling logic does not happen until - // `scheduleTaskForRootDuringMicrotask` runs. - // Add the root to the schedule - if (root === lastScheduledRoot || root.next !== null); - else { - if (lastScheduledRoot === null) { - firstScheduledRoot = lastScheduledRoot = root; - } else { - lastScheduledRoot.next = root; - lastScheduledRoot = root; - } - } // Any time a root received an update, we set this to true until the next time - // we process the schedule. If it's false, then we can quickly exit flushSync - // without consulting the schedule. - - mightHavePendingSyncWork = true; // At the end of the current event, go through each of the roots and ensure - // there's a task scheduled for each one at the correct priority. - - if (ReactSharedInternals.actQueue !== null) { - // We're inside an `act` scope. - if (!didScheduleMicrotask_act) { - didScheduleMicrotask_act = true; - scheduleImmediateTask(processRootScheduleInMicrotask); - } - } else { - if (!didScheduleMicrotask) { - didScheduleMicrotask = true; - scheduleImmediateTask(processRootScheduleInMicrotask); - } +// transition updates that occur while the async action is still in progress +// are treated as part of the action. +// +// The ideal behavior would be to treat each async function as an independent +// action. However, without a mechanism like AsyncContext, we can't tell which +// action an update corresponds to. So instead, we entangle them all into one. +// The listeners to notify once the entangled scope completes. + +var currentEntangledListeners = null; // The number of pending async actions in the entangled scope. + +var currentEntangledPendingCount = 0; // The transition lane shared by all updates in the entangled scope. + +var currentEntangledLane = NoLane; // A thenable that resolves when the entangled scope completes. It does not +// resolve to a particular value because it's only used for suspending the UI +// until the async action scope has completed. + +var currentEntangledActionThenable = null; +function entangleAsyncAction(transition, thenable) { + // `thenable` is the return value of the async action scope function. Create + // a combined thenable that resolves once every entangled scope function + // has finished. + if (currentEntangledListeners === null) { + // There's no outer async action scope. Create a new one. + var entangledListeners = currentEntangledListeners = []; + currentEntangledPendingCount = 0; + currentEntangledLane = requestTransitionLane(); + var entangledThenable = { + status: 'pending', + value: undefined, + then: function (resolve) { + entangledListeners.push(resolve); } + }; + currentEntangledActionThenable = entangledThenable; + } - { - // While this flag is disabled, we schedule the render task immediately - // instead of waiting a microtask. - // TODO: We need to land enableDeferRootSchedulingToMicrotask ASAP to - // unblock additional features we have planned. - scheduleTaskForRootDuringMicrotask(root, now$1()); - } + currentEntangledPendingCount++; + thenable.then(pingEngtangledActionScope, pingEngtangledActionScope); + return thenable; +} - if (ReactSharedInternals.isBatchingLegacy && root.tag === LegacyRoot) { - // Special `act` case: Record whenever a legacy update is scheduled. - ReactSharedInternals.didScheduleLegacyUpdate = true; - } - } - function flushSyncWorkOnAllRoots() { - // This is allowed to be called synchronously, but the caller should check - // the execution context first. - flushSyncWorkAcrossRoots_impl(false); - } - function flushSyncWorkOnLegacyRootsOnly() { - // This is allowed to be called synchronously, but the caller should check - // the execution context first. - { - flushSyncWorkAcrossRoots_impl(true); - } +function pingEngtangledActionScope() { + if (currentEntangledListeners !== null && --currentEntangledPendingCount === 0) { + // All the actions have finished. Close the entangled async action scope + // and notify all the listeners. + if (currentEntangledActionThenable !== null) { + var fulfilledThenable = currentEntangledActionThenable; + fulfilledThenable.status = 'fulfilled'; } - function flushSyncWorkAcrossRoots_impl(onlyLegacy) { - if (isFlushingWork) { - // Prevent reentrancy. - // TODO: Is this overly defensive? The callers must check the execution - // context first regardless. - return; - } - - if (!mightHavePendingSyncWork) { - // Fast path. There's no sync work to do. - return; - } // There may or may not be synchronous work scheduled. Let's check. - - var didPerformSomeWork; - isFlushingWork = true; - - do { - didPerformSomeWork = false; - var root = firstScheduledRoot; - - while (root !== null) { - if (onlyLegacy && root.tag !== LegacyRoot); - else { - var workInProgressRoot = getWorkInProgressRoot(); - var workInProgressRootRenderLanes = - getWorkInProgressRootRenderLanes(); - var nextLanes = getNextLanes( - root, - root === workInProgressRoot - ? workInProgressRootRenderLanes - : NoLanes - ); + var listeners = currentEntangledListeners; + currentEntangledListeners = null; + currentEntangledLane = NoLane; + currentEntangledActionThenable = null; - if (includesSyncLane(nextLanes)) { - // This root has pending sync work. Flush it now. - didPerformSomeWork = true; - performSyncWorkOnRoot(root, nextLanes); - } - } + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; + listener(); + } + } +} - root = root.next; - } - } while (didPerformSomeWork); +function chainThenableValue(thenable, result) { + // Equivalent to: Promise.resolve(thenable).then(() => result), except we can + // cheat a bit since we know that that this thenable is only ever consumed + // by React. + // + // We don't technically require promise support on the client yet, hence this + // extra code. + var listeners = []; + var thenableWithOverride = { + status: 'pending', + value: null, + reason: null, + then: function (resolve) { + listeners.push(resolve); + } + }; + thenable.then(function (value) { + var fulfilledThenable = thenableWithOverride; + fulfilledThenable.status = 'fulfilled'; + fulfilledThenable.value = result; + + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; + listener(result); + } + }, function (error) { + var rejectedThenable = thenableWithOverride; + rejectedThenable.status = 'rejected'; + rejectedThenable.reason = error; + + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; // This is a perf hack where we call the `onFulfill` ping function + // instead of `onReject`, because we know that React is the only + // consumer of these promises, and it passes the same listener to both. + // We also know that it will read the error directly off the + // `.reason` field. + + listener(undefined); + } + }); + return thenableWithOverride; +} +function peekEntangledActionLane() { + return currentEntangledLane; +} +function peekEntangledActionThenable() { + return currentEntangledActionThenable; +} - isFlushingWork = false; - } +var UpdateState = 0; +var ReplaceState = 1; +var ForceUpdate = 2; +var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`. +// It should only be read right after calling `processUpdateQueue`, via +// `checkHasForceUpdateAfterProcessing`. - function processRootScheduleInMicrotask() { - // This function is always called inside a microtask. It should never be - // called synchronously. - didScheduleMicrotask = false; +var hasForceUpdate = false; +var didWarnUpdateInsideUpdate; +var currentlyProcessingQueue; - { - didScheduleMicrotask_act = false; - } // We'll recompute this as we iterate through all the roots and schedule them. - - mightHavePendingSyncWork = false; - var currentTime = now$1(); - var prev = null; - var root = firstScheduledRoot; - - while (root !== null) { - var next = root.next; - - if ( - currentEventTransitionLane !== NoLane && - shouldAttemptEagerTransition() - ) { - // A transition was scheduled during an event, but we're going to try to - // render it synchronously anyway. We do this during a popstate event to - // preserve the scroll position of the previous page. - upgradePendingLaneToSync(root, currentEventTransitionLane); - } +{ + didWarnUpdateInsideUpdate = false; + currentlyProcessingQueue = null; +} - var nextLanes = scheduleTaskForRootDuringMicrotask(root, currentTime); +function initializeUpdateQueue(fiber) { + var queue = { + baseState: fiber.memoizedState, + firstBaseUpdate: null, + lastBaseUpdate: null, + shared: { + pending: null, + lanes: NoLanes, + hiddenCallbacks: null + }, + callbacks: null + }; + fiber.updateQueue = queue; +} +function cloneUpdateQueue(current, workInProgress) { + // Clone the update queue from current. Unless it's already a clone. + var queue = workInProgress.updateQueue; + var currentQueue = current.updateQueue; + + if (queue === currentQueue) { + var clone = { + baseState: currentQueue.baseState, + firstBaseUpdate: currentQueue.firstBaseUpdate, + lastBaseUpdate: currentQueue.lastBaseUpdate, + shared: currentQueue.shared, + callbacks: null + }; + workInProgress.updateQueue = clone; + } +} +function createUpdate(lane) { + var update = { + lane: lane, + tag: UpdateState, + payload: null, + callback: null, + next: null + }; + return update; +} +function enqueueUpdate(fiber, update, lane) { + var updateQueue = fiber.updateQueue; - if (nextLanes === NoLane) { - // This root has no more pending work. Remove it from the schedule. To - // guard against subtle reentrancy bugs, this microtask is the only place - // we do this — you can add roots to the schedule whenever, but you can - // only remove them here. - // Null this out so we know it's been removed from the schedule. - root.next = null; + if (updateQueue === null) { + // Only occurs if the fiber has been unmounted. + return null; + } - if (prev === null) { - // This is the new head of the list - firstScheduledRoot = next; - } else { - prev.next = next; - } + var sharedQueue = updateQueue.shared; - if (next === null) { - // This is the new tail of the list - lastScheduledRoot = prev; - } - } else { - // This root still has work. Keep it in the list. - prev = root; + { + if (currentlyProcessingQueue === sharedQueue && !didWarnUpdateInsideUpdate) { + var componentName = getComponentNameFromFiber(fiber); - if (includesSyncLane(nextLanes)) { - mightHavePendingSyncWork = true; - } - } + error('An update (setState, replaceState, or forceUpdate) was scheduled ' + 'from inside an update function. Update functions should be pure, ' + 'with zero side-effects. Consider using componentDidUpdate or a ' + 'callback.\n\nPlease update the following component: %s', componentName); - root = next; - } + didWarnUpdateInsideUpdate = true; + } + } - currentEventTransitionLane = NoLane; // At the end of the microtask, flush any pending synchronous work. This has - // to come at the end, because it does actual rendering work that might throw. + if (isUnsafeClassRenderPhaseUpdate()) { + // This is an unsafe render phase update. Add directly to the update + // queue so we can process it immediately during the current render. + var pending = sharedQueue.pending; - flushSyncWorkOnAllRoots(); + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; } - function scheduleTaskForRootDuringMicrotask(root, currentTime) { - // This function is always called inside a microtask, or at the very end of a - // rendering task right before we yield to the main thread. It should never be - // called synchronously. - // - // TODO: Unless enableDeferRootSchedulingToMicrotask is off. We need to land - // that ASAP to unblock additional features we have planned. - // - // This function also never performs React work synchronously; it should - // only schedule work to be performed later, in a separate task or microtask. - // Check if any lanes are being starved by other work. If so, mark them as - // expired so we know to work on those next. - markStarvedLanesAsExpired(root, currentTime); // Determine the next lanes to work on, and their priority. - - var workInProgressRoot = getWorkInProgressRoot(); - var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); - var nextLanes = getNextLanes( - root, - root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes - ); - var existingCallbackNode = root.callbackNode; - - if ( - // Check if there's nothing to work on - nextLanes === NoLanes || // If this root is currently suspended and waiting for data to resolve, don't - // schedule a task to render it. We'll either wait for a ping, or wait to - // receive an update. - // - // Suspended render phase - (root === workInProgressRoot && isWorkLoopSuspendedOnData()) || // Suspended commit phase - root.cancelPendingCommit !== null - ) { - // Fast path: There's nothing to work on. - if (existingCallbackNode !== null) { - cancelCallback(existingCallbackNode); - } + sharedQueue.pending = update; // Update the childLanes even though we're most likely already rendering + // this fiber. This is for backwards compatibility in the case where you + // update a different component during render phase than the one that is + // currently renderings (a pattern that is accompanied by a warning). - root.callbackNode = null; - root.callbackPriority = NoLane; - return NoLane; - } // Schedule a new callback in the host environment. + return unsafe_markUpdateLaneFromFiberToRoot(fiber, lane); + } else { + return enqueueConcurrentClassUpdate(fiber, sharedQueue, update, lane); + } +} +function entangleTransitions(root, fiber, lane) { + var updateQueue = fiber.updateQueue; - if (includesSyncLane(nextLanes)) { - // Synchronous work is always flushed at the end of the microtask, so we - // don't need to schedule an additional task. - if (existingCallbackNode !== null) { - cancelCallback(existingCallbackNode); - } + if (updateQueue === null) { + // Only occurs if the fiber has been unmounted. + return; + } - root.callbackPriority = SyncLane; - root.callbackNode = null; - return SyncLane; - } else { - // We use the highest priority lane to represent the priority of the callback. - var existingCallbackPriority = root.callbackPriority; - var newCallbackPriority = getHighestPriorityLane(nextLanes); - - if ( - newCallbackPriority === existingCallbackPriority && // Special case related to `act`. If the currently scheduled task is a - // Scheduler task, rather than an `act` task, cancel it and re-schedule - // on the `act` queue. - !( - ReactSharedInternals.actQueue !== null && - existingCallbackNode !== fakeActCallbackNode$1 - ) - ) { - // The priority hasn't changed. We can reuse the existing task. - return newCallbackPriority; - } else { - // Cancel the existing callback. We'll schedule a new one below. - cancelCallback(existingCallbackNode); - } + var sharedQueue = updateQueue.shared; - var schedulerPriorityLevel; + if (isTransitionLane(lane)) { + var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must + // have finished. We can remove them from the shared queue, which represents + // a superset of the actually pending lanes. In some cases we may entangle + // more than we need to, but that's OK. In fact it's worse if we *don't* + // entangle when we should. - switch (lanesToEventPriority(nextLanes)) { - case DiscreteEventPriority: - schedulerPriorityLevel = ImmediatePriority; - break; + queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. - case ContinuousEventPriority: - schedulerPriorityLevel = UserBlockingPriority; - break; + var newQueueLanes = mergeLanes(queueLanes, lane); + sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if + // the lane finished since the last time we entangled it. So we need to + // entangle it again, just to be sure. - case DefaultEventPriority: - schedulerPriorityLevel = NormalPriority$1; - break; + markRootEntangled(root, newQueueLanes); + } +} +function enqueueCapturedUpdate(workInProgress, capturedUpdate) { + // Captured updates are updates that are thrown by a child during the render + // phase. They should be discarded if the render is aborted. Therefore, + // we should only put them on the work-in-progress queue, not the current one. + var queue = workInProgress.updateQueue; // Check if the work-in-progress queue is a clone. + + var current = workInProgress.alternate; + + if (current !== null) { + var currentQueue = current.updateQueue; + + if (queue === currentQueue) { + // The work-in-progress queue is the same as current. This happens when + // we bail out on a parent fiber that then captures an error thrown by + // a child. Since we want to append the update only to the work-in + // -progress queue, we need to clone the updates. We usually clone during + // processUpdateQueue, but that didn't happen in this case because we + // skipped over the parent when we bailed out. + var newFirst = null; + var newLast = null; + var firstBaseUpdate = queue.firstBaseUpdate; - case IdleEventPriority: - schedulerPriorityLevel = IdlePriority; - break; + if (firstBaseUpdate !== null) { + // Loop through the updates and clone them. + var update = firstBaseUpdate; - default: - schedulerPriorityLevel = NormalPriority$1; - break; - } + do { + var clone = { + lane: update.lane, + tag: update.tag, + payload: update.payload, + // When this update is rebased, we should not fire its + // callback again. + callback: null, + next: null + }; - var newCallbackNode = scheduleCallback$2( - schedulerPriorityLevel, - performConcurrentWorkOnRoot.bind(null, root) - ); - root.callbackPriority = newCallbackPriority; - root.callbackNode = newCallbackNode; - return newCallbackPriority; - } - } + if (newLast === null) { + newFirst = newLast = clone; + } else { + newLast.next = clone; + newLast = clone; + } // $FlowFixMe[incompatible-type] we bail out when we get a null - function getContinuationForRoot(root, originalCallbackNode) { - // This is called at the end of `performConcurrentWorkOnRoot` to determine - // if we need to schedule a continuation task. - // - // Usually `scheduleTaskForRootDuringMicrotask` only runs inside a microtask; - // however, since most of the logic for determining if we need a continuation - // versus a new task is the same, we cheat a bit and call it here. This is - // only safe to do because we know we're at the end of the browser task. - // So although it's not an actual microtask, it might as well be. - scheduleTaskForRootDuringMicrotask(root, now$1()); - if (root.callbackNode === originalCallbackNode) { - // The task node scheduled for this root is the same one that's - // currently executed. Need to return a continuation. - return performConcurrentWorkOnRoot.bind(null, root); - } + update = update.next; + } while (update !== null); // Append the captured update the end of the cloned list. - return null; - } - var fakeActCallbackNode$1 = {}; - function scheduleCallback$2(priorityLevel, callback) { - if (ReactSharedInternals.actQueue !== null) { - // Special case: We're inside an `act` scope (a testing utility). - // Instead of scheduling work in the host environment, add it to a - // fake internal queue that's managed by the `act` implementation. - ReactSharedInternals.actQueue.push(callback); - return fakeActCallbackNode$1; + if (newLast === null) { + newFirst = newLast = capturedUpdate; + } else { + newLast.next = capturedUpdate; + newLast = capturedUpdate; + } } else { - return scheduleCallback$3(priorityLevel, callback); + // There are no base updates. + newFirst = newLast = capturedUpdate; } - } - function cancelCallback(callbackNode) { - if (callbackNode === fakeActCallbackNode$1); - else if (callbackNode !== null) { - cancelCallback$1(callbackNode); - } + queue = { + baseState: currentQueue.baseState, + firstBaseUpdate: newFirst, + lastBaseUpdate: newLast, + shared: currentQueue.shared, + callbacks: currentQueue.callbacks + }; + workInProgress.updateQueue = queue; + return; } + } // Append the update to the end of the list. - function scheduleImmediateTask(cb) { - if (ReactSharedInternals.actQueue !== null) { - // Special case: Inside an `act` scope, we push microtasks to the fake `act` - // callback queue. This is because we currently support calling `act` - // without awaiting the result. The plan is to deprecate that, and require - // that you always await the result so that the microtasks have a chance to - // run. But it hasn't happened yet. - ReactSharedInternals.actQueue.push(function () { - cb(); - return null; - }); - } // TODO: Can we land supportsMicrotasks? Which environments don't support it? - // Alternatively, can we move this check to the host config? - - { - // If microtasks are not supported, use Scheduler. - scheduleCallback$3(ImmediatePriority, cb); - } - } - function requestTransitionLane( // This argument isn't used, it's only here to encourage the caller to - // check that it's inside a transition before calling this function. - // TODO: Make this non-nullable. Requires a tweak to useOptimistic. - transition - ) { - // The algorithm for assigning an update to a lane should be stable for all - // updates at the same priority within the same event. To do this, the - // inputs to the algorithm must be the same. - // - // The trick we use is to cache the first of each of these inputs within an - // event. Then reset the cached values once we can be sure the event is - // over. Our heuristic for that is whenever we enter a concurrent work loop. - if (currentEventTransitionLane === NoLane) { - // All transitions within the same event are assigned the same lane. - currentEventTransitionLane = claimNextTransitionLane(); - } + var lastBaseUpdate = queue.lastBaseUpdate; - return currentEventTransitionLane; - } + if (lastBaseUpdate === null) { + queue.firstBaseUpdate = capturedUpdate; + } else { + lastBaseUpdate.next = capturedUpdate; + } - // transition updates that occur while the async action is still in progress - // are treated as part of the action. - // - // The ideal behavior would be to treat each async function as an independent - // action. However, without a mechanism like AsyncContext, we can't tell which - // action an update corresponds to. So instead, we entangle them all into one. - // The listeners to notify once the entangled scope completes. - - var currentEntangledListeners = null; // The number of pending async actions in the entangled scope. - - var currentEntangledPendingCount = 0; // The transition lane shared by all updates in the entangled scope. - - var currentEntangledLane = NoLane; // A thenable that resolves when the entangled scope completes. It does not - // resolve to a particular value because it's only used for suspending the UI - // until the async action scope has completed. - - var currentEntangledActionThenable = null; - function entangleAsyncAction(transition, thenable) { - // `thenable` is the return value of the async action scope function. Create - // a combined thenable that resolves once every entangled scope function - // has finished. - if (currentEntangledListeners === null) { - // There's no outer async action scope. Create a new one. - var entangledListeners = (currentEntangledListeners = []); - currentEntangledPendingCount = 0; - currentEntangledLane = requestTransitionLane(); - var entangledThenable = { - status: "pending", - value: undefined, - then: function (resolve) { - entangledListeners.push(resolve); - } - }; - currentEntangledActionThenable = entangledThenable; - } + queue.lastBaseUpdate = capturedUpdate; +} - currentEntangledPendingCount++; - thenable.then(pingEngtangledActionScope, pingEngtangledActionScope); - return thenable; - } +function getStateFromUpdate(workInProgress, queue, update, prevState, nextProps, instance) { + switch (update.tag) { + case ReplaceState: + { + var payload = update.payload; - function pingEngtangledActionScope() { - if ( - currentEntangledListeners !== null && - --currentEntangledPendingCount === 0 - ) { - // All the actions have finished. Close the entangled async action scope - // and notify all the listeners. - if (currentEntangledActionThenable !== null) { - var fulfilledThenable = currentEntangledActionThenable; - fulfilledThenable.status = "fulfilled"; - } + if (typeof payload === 'function') { + // Updater function + { + enterDisallowedContextReadInDEV(); + } - var listeners = currentEntangledListeners; - currentEntangledListeners = null; - currentEntangledLane = NoLane; - currentEntangledActionThenable = null; + var nextState = payload.call(instance, prevState, nextProps); - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; - listener(); - } - } - } + { - function chainThenableValue(thenable, result) { - // Equivalent to: Promise.resolve(thenable).then(() => result), except we can - // cheat a bit since we know that that this thenable is only ever consumed - // by React. - // - // We don't technically require promise support on the client yet, hence this - // extra code. - var listeners = []; - var thenableWithOverride = { - status: "pending", - value: null, - reason: null, - then: function (resolve) { - listeners.push(resolve); - } - }; - thenable.then( - function (value) { - var fulfilledThenable = thenableWithOverride; - fulfilledThenable.status = "fulfilled"; - fulfilledThenable.value = result; - - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; - listener(result); + exitDisallowedContextReadInDEV(); } - }, - function (error) { - var rejectedThenable = thenableWithOverride; - rejectedThenable.status = "rejected"; - rejectedThenable.reason = error; - - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; // This is a perf hack where we call the `onFulfill` ping function - // instead of `onReject`, because we know that React is the only - // consumer of these promises, and it passes the same listener to both. - // We also know that it will read the error directly off the - // `.reason` field. - - listener(undefined); - } - } - ); - return thenableWithOverride; - } - function peekEntangledActionLane() { - return currentEntangledLane; - } - function peekEntangledActionThenable() { - return currentEntangledActionThenable; - } - - var UpdateState = 0; - var ReplaceState = 1; - var ForceUpdate = 2; - var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`. - // It should only be read right after calling `processUpdateQueue`, via - // `checkHasForceUpdateAfterProcessing`. - var hasForceUpdate = false; - var didWarnUpdateInsideUpdate; - var currentlyProcessingQueue; + return nextState; + } // State object - { - didWarnUpdateInsideUpdate = false; - currentlyProcessingQueue = null; - } - - function initializeUpdateQueue(fiber) { - var queue = { - baseState: fiber.memoizedState, - firstBaseUpdate: null, - lastBaseUpdate: null, - shared: { - pending: null, - lanes: NoLanes, - hiddenCallbacks: null - }, - callbacks: null - }; - fiber.updateQueue = queue; - } - function cloneUpdateQueue(current, workInProgress) { - // Clone the update queue from current. Unless it's already a clone. - var queue = workInProgress.updateQueue; - var currentQueue = current.updateQueue; - if (queue === currentQueue) { - var clone = { - baseState: currentQueue.baseState, - firstBaseUpdate: currentQueue.firstBaseUpdate, - lastBaseUpdate: currentQueue.lastBaseUpdate, - shared: currentQueue.shared, - callbacks: null - }; - workInProgress.updateQueue = clone; + return payload; } - } - function createUpdate(lane) { - var update = { - lane: lane, - tag: UpdateState, - payload: null, - callback: null, - next: null - }; - return update; - } - function enqueueUpdate(fiber, update, lane) { - var updateQueue = fiber.updateQueue; - if (updateQueue === null) { - // Only occurs if the fiber has been unmounted. - return null; + case CaptureUpdate: + { + workInProgress.flags = workInProgress.flags & ~ShouldCapture | DidCapture; } + // Intentional fallthrough - var sharedQueue = updateQueue.shared; - + case UpdateState: { - if ( - currentlyProcessingQueue === sharedQueue && - !didWarnUpdateInsideUpdate - ) { - var componentName = getComponentNameFromFiber(fiber); - - error( - "An update (setState, replaceState, or forceUpdate) was scheduled " + - "from inside an update function. Update functions should be pure, " + - "with zero side-effects. Consider using componentDidUpdate or a " + - "callback.\n\nPlease update the following component: %s", - componentName - ); - - didWarnUpdateInsideUpdate = true; - } - } + var _payload = update.payload; + var partialState; - if (isUnsafeClassRenderPhaseUpdate()) { - // This is an unsafe render phase update. Add directly to the update - // queue so we can process it immediately during the current render. - var pending = sharedQueue.pending; + if (typeof _payload === 'function') { + // Updater function + { + enterDisallowedContextReadInDEV(); + } + + partialState = _payload.call(instance, prevState, nextProps); + + { - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; + exitDisallowedContextReadInDEV(); + } } else { - update.next = pending.next; - pending.next = update; + // Partial state object + partialState = _payload; } - sharedQueue.pending = update; // Update the childLanes even though we're most likely already rendering - // this fiber. This is for backwards compatibility in the case where you - // update a different component during render phase than the one that is - // currently renderings (a pattern that is accompanied by a warning). + if (partialState === null || partialState === undefined) { + // Null and undefined are treated as no-ops. + return prevState; + } // Merge the partial state and the previous state. - return unsafe_markUpdateLaneFromFiberToRoot(fiber, lane); - } else { - return enqueueConcurrentClassUpdate(fiber, sharedQueue, update, lane); + + return assign({}, prevState, partialState); } - } - function entangleTransitions(root, fiber, lane) { - var updateQueue = fiber.updateQueue; - if (updateQueue === null) { - // Only occurs if the fiber has been unmounted. - return; + case ForceUpdate: + { + hasForceUpdate = true; + return prevState; } + } - var sharedQueue = updateQueue.shared; + return prevState; +} - if (isTransitionLane(lane)) { - var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must - // have finished. We can remove them from the shared queue, which represents - // a superset of the actually pending lanes. In some cases we may entangle - // more than we need to, but that's OK. In fact it's worse if we *don't* - // entangle when we should. +var didReadFromEntangledAsyncAction = false; // Each call to processUpdateQueue should be accompanied by a call to this. It's +// only in a separate function because in updateHostRoot, it must happen after +// all the context stacks have been pushed to, to prevent a stack mismatch. A +// bit unfortunate. + +function suspendIfUpdateReadFromEntangledAsyncAction() { + // Check if this update is part of a pending async action. If so, we'll + // need to suspend until the action has finished, so that it's batched + // together with future updates in the same action. + // TODO: Once we support hooks inside useMemo (or an equivalent + // memoization boundary like Forget), hoist this logic so that it only + // suspends if the memo boundary produces a new value. + if (didReadFromEntangledAsyncAction) { + var entangledActionThenable = peekEntangledActionThenable(); + + if (entangledActionThenable !== null) { + // TODO: Instead of the throwing the thenable directly, throw a + // special object like `use` does so we can detect if it's captured + // by userspace. + throw entangledActionThenable; + } + } +} +function processUpdateQueue(workInProgress, props, instance, renderLanes) { + didReadFromEntangledAsyncAction = false; // This is always non-null on a ClassComponent or HostRoot - queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + var queue = workInProgress.updateQueue; + hasForceUpdate = false; - var newQueueLanes = mergeLanes(queueLanes, lane); - sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if - // the lane finished since the last time we entangled it. So we need to - // entangle it again, just to be sure. + { + currentlyProcessingQueue = queue.shared; + } - markRootEntangled(root, newQueueLanes); - } - } - function enqueueCapturedUpdate(workInProgress, capturedUpdate) { - // Captured updates are updates that are thrown by a child during the render - // phase. They should be discarded if the render is aborted. Therefore, - // we should only put them on the work-in-progress queue, not the current one. - var queue = workInProgress.updateQueue; // Check if the work-in-progress queue is a clone. + var firstBaseUpdate = queue.firstBaseUpdate; + var lastBaseUpdate = queue.lastBaseUpdate; // Check if there are pending updates. If so, transfer them to the base queue. - var current = workInProgress.alternate; + var pendingQueue = queue.shared.pending; - if (current !== null) { - var currentQueue = current.updateQueue; - - if (queue === currentQueue) { - // The work-in-progress queue is the same as current. This happens when - // we bail out on a parent fiber that then captures an error thrown by - // a child. Since we want to append the update only to the work-in - // -progress queue, we need to clone the updates. We usually clone during - // processUpdateQueue, but that didn't happen in this case because we - // skipped over the parent when we bailed out. - var newFirst = null; - var newLast = null; - var firstBaseUpdate = queue.firstBaseUpdate; - - if (firstBaseUpdate !== null) { - // Loop through the updates and clone them. - var update = firstBaseUpdate; - - do { - var clone = { - lane: update.lane, - tag: update.tag, - payload: update.payload, - // When this update is rebased, we should not fire its - // callback again. - callback: null, - next: null - }; + if (pendingQueue !== null) { + queue.shared.pending = null; // The pending queue is circular. Disconnect the pointer between first + // and last so that it's non-circular. - if (newLast === null) { - newFirst = newLast = clone; - } else { - newLast.next = clone; - newLast = clone; - } // $FlowFixMe[incompatible-type] we bail out when we get a null + var lastPendingUpdate = pendingQueue; + var firstPendingUpdate = lastPendingUpdate.next; + lastPendingUpdate.next = null; // Append pending updates to base queue - update = update.next; - } while (update !== null); // Append the captured update the end of the cloned list. + if (lastBaseUpdate === null) { + firstBaseUpdate = firstPendingUpdate; + } else { + lastBaseUpdate.next = firstPendingUpdate; + } - if (newLast === null) { - newFirst = newLast = capturedUpdate; - } else { - newLast.next = capturedUpdate; - newLast = capturedUpdate; - } - } else { - // There are no base updates. - newFirst = newLast = capturedUpdate; - } + lastBaseUpdate = lastPendingUpdate; // If there's a current queue, and it's different from the base queue, then + // we need to transfer the updates to that queue, too. Because the base + // queue is a singly-linked list with no cycles, we can append to both + // lists and take advantage of structural sharing. + // TODO: Pass `current` as argument - queue = { - baseState: currentQueue.baseState, - firstBaseUpdate: newFirst, - lastBaseUpdate: newLast, - shared: currentQueue.shared, - callbacks: currentQueue.callbacks - }; - workInProgress.updateQueue = queue; - return; - } - } // Append the update to the end of the list. + var current = workInProgress.alternate; - var lastBaseUpdate = queue.lastBaseUpdate; + if (current !== null) { + // This is always non-null on a ClassComponent or HostRoot + var currentQueue = current.updateQueue; + var currentLastBaseUpdate = currentQueue.lastBaseUpdate; - if (lastBaseUpdate === null) { - queue.firstBaseUpdate = capturedUpdate; - } else { - lastBaseUpdate.next = capturedUpdate; - } + if (currentLastBaseUpdate !== lastBaseUpdate) { + if (currentLastBaseUpdate === null) { + currentQueue.firstBaseUpdate = firstPendingUpdate; + } else { + currentLastBaseUpdate.next = firstPendingUpdate; + } - queue.lastBaseUpdate = capturedUpdate; + currentQueue.lastBaseUpdate = lastPendingUpdate; + } } + } // These values may change as we process the queue. - function getStateFromUpdate( - workInProgress, - queue, - update, - prevState, - nextProps, - instance - ) { - switch (update.tag) { - case ReplaceState: { - var payload = update.payload; - if (typeof payload === "function") { - // Updater function - { - enterDisallowedContextReadInDEV(); - } + if (firstBaseUpdate !== null) { + // Iterate through the list of updates to compute the result. + var newState = queue.baseState; // TODO: Don't need to accumulate this. Instead, we can remove renderLanes + // from the original lanes. - var nextState = payload.call(instance, prevState, nextProps); + var newLanes = NoLanes; + var newBaseState = null; + var newFirstBaseUpdate = null; + var newLastBaseUpdate = null; + var update = firstBaseUpdate; - { - exitDisallowedContextReadInDEV(); - } + do { + // An extra OffscreenLane bit is added to updates that were made to + // a hidden tree, so that we can distinguish them from updates that were + // already there when the tree was hidden. + var updateLane = removeLanes(update.lane, OffscreenLane); + var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then + // it's not a "base" update and we should disregard the extra base lanes + // that were added to renderLanes when we entered the Offscreen tree. - return nextState; - } // State object + var shouldSkipUpdate = isHiddenUpdate ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) : !isSubsetOfLanes(renderLanes, updateLane); - return payload; - } + if (shouldSkipUpdate) { + // Priority is insufficient. Skip this update. If this is the first + // skipped update, the previous update/state is the new base + // update/state. + var clone = { + lane: updateLane, + tag: update.tag, + payload: update.payload, + callback: update.callback, + next: null + }; - case CaptureUpdate: { - workInProgress.flags = - (workInProgress.flags & ~ShouldCapture) | DidCapture; - } - // Intentional fallthrough + if (newLastBaseUpdate === null) { + newFirstBaseUpdate = newLastBaseUpdate = clone; + newBaseState = newState; + } else { + newLastBaseUpdate = newLastBaseUpdate.next = clone; + } // Update the remaining priority in the queue. - case UpdateState: { - var _payload = update.payload; - var partialState; - if (typeof _payload === "function") { - // Updater function - { - enterDisallowedContextReadInDEV(); - } + newLanes = mergeLanes(newLanes, updateLane); + } else { + // This update does have sufficient priority. + // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. + if (updateLane !== NoLane && updateLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } + + if (newLastBaseUpdate !== null) { + var _clone = { + // This update is going to be committed so we never want uncommit + // it. Using NoLane works because 0 is a subset of all bitmasks, so + // this will never be skipped by the check above. + lane: NoLane, + tag: update.tag, + payload: update.payload, + // When this update is rebased, we should not fire its + // callback again. + callback: null, + next: null + }; + newLastBaseUpdate = newLastBaseUpdate.next = _clone; + } // Process this update. - partialState = _payload.call(instance, prevState, nextProps); - { - exitDisallowedContextReadInDEV(); - } - } else { - // Partial state object - partialState = _payload; + newState = getStateFromUpdate(workInProgress, queue, update, newState, props, instance); + var callback = update.callback; + + if (callback !== null) { + workInProgress.flags |= Callback; + + if (isHiddenUpdate) { + workInProgress.flags |= Visibility; } - if (partialState === null || partialState === undefined) { - // Null and undefined are treated as no-ops. - return prevState; - } // Merge the partial state and the previous state. + var callbacks = queue.callbacks; - return assign({}, prevState, partialState); + if (callbacks === null) { + queue.callbacks = [callback]; + } else { + callbacks.push(callback); + } } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - case ForceUpdate: { - hasForceUpdate = true; - return prevState; - } - } - return prevState; - } + update = update.next; - var didReadFromEntangledAsyncAction = false; // Each call to processUpdateQueue should be accompanied by a call to this. It's - // only in a separate function because in updateHostRoot, it must happen after - // all the context stacks have been pushed to, to prevent a stack mismatch. A - // bit unfortunate. + if (update === null) { + pendingQueue = queue.shared.pending; - function suspendIfUpdateReadFromEntangledAsyncAction() { - // Check if this update is part of a pending async action. If so, we'll - // need to suspend until the action has finished, so that it's batched - // together with future updates in the same action. - // TODO: Once we support hooks inside useMemo (or an equivalent - // memoization boundary like Forget), hoist this logic so that it only - // suspends if the memo boundary produces a new value. - if (didReadFromEntangledAsyncAction) { - var entangledActionThenable = peekEntangledActionThenable(); + if (pendingQueue === null) { + break; + } else { + // An update was scheduled from inside a reducer. Add the new + // pending updates to the end of the list and keep processing. + var _lastPendingUpdate = pendingQueue; // Intentionally unsound. Pending updates form a circular list, but we + // unravel them when transferring them to the base queue. - if (entangledActionThenable !== null) { - // TODO: Instead of the throwing the thenable directly, throw a - // special object like `use` does so we can detect if it's captured - // by userspace. - throw entangledActionThenable; + var _firstPendingUpdate = _lastPendingUpdate.next; + _lastPendingUpdate.next = null; + update = _firstPendingUpdate; + queue.lastBaseUpdate = _lastPendingUpdate; + queue.shared.pending = null; } } - } - function processUpdateQueue(workInProgress, props, instance, renderLanes) { - didReadFromEntangledAsyncAction = false; // This is always non-null on a ClassComponent or HostRoot - - var queue = workInProgress.updateQueue; - hasForceUpdate = false; - - { - currentlyProcessingQueue = queue.shared; - } - - var firstBaseUpdate = queue.firstBaseUpdate; - var lastBaseUpdate = queue.lastBaseUpdate; // Check if there are pending updates. If so, transfer them to the base queue. + } while (true); - var pendingQueue = queue.shared.pending; + if (newLastBaseUpdate === null) { + newBaseState = newState; + } - if (pendingQueue !== null) { - queue.shared.pending = null; // The pending queue is circular. Disconnect the pointer between first - // and last so that it's non-circular. + queue.baseState = newBaseState; + queue.firstBaseUpdate = newFirstBaseUpdate; + queue.lastBaseUpdate = newLastBaseUpdate; - var lastPendingUpdate = pendingQueue; - var firstPendingUpdate = lastPendingUpdate.next; - lastPendingUpdate.next = null; // Append pending updates to base queue + if (firstBaseUpdate === null) { + // `queue.lanes` is used for entangling transitions. We can set it back to + // zero once the queue is empty. + queue.shared.lanes = NoLanes; + } // Set the remaining expiration time to be whatever is remaining in the queue. + // This should be fine because the only two other things that contribute to + // expiration time are props and context. We're already in the middle of the + // begin phase by the time we start processing the queue, so we've already + // dealt with the props. Context in components that specify + // shouldComponentUpdate is tricky; but we'll have to account for + // that regardless. - if (lastBaseUpdate === null) { - firstBaseUpdate = firstPendingUpdate; - } else { - lastBaseUpdate.next = firstPendingUpdate; - } - lastBaseUpdate = lastPendingUpdate; // If there's a current queue, and it's different from the base queue, then - // we need to transfer the updates to that queue, too. Because the base - // queue is a singly-linked list with no cycles, we can append to both - // lists and take advantage of structural sharing. - // TODO: Pass `current` as argument + markSkippedUpdateLanes(newLanes); + workInProgress.lanes = newLanes; + workInProgress.memoizedState = newState; + } - var current = workInProgress.alternate; + { + currentlyProcessingQueue = null; + } +} - if (current !== null) { - // This is always non-null on a ClassComponent or HostRoot - var currentQueue = current.updateQueue; - var currentLastBaseUpdate = currentQueue.lastBaseUpdate; +function callCallback(callback, context) { + if (typeof callback !== 'function') { + throw new Error('Invalid argument passed as callback. Expected a function. Instead ' + ("received: " + callback)); + } - if (currentLastBaseUpdate !== lastBaseUpdate) { - if (currentLastBaseUpdate === null) { - currentQueue.firstBaseUpdate = firstPendingUpdate; - } else { - currentLastBaseUpdate.next = firstPendingUpdate; - } + callback.call(context); +} - currentQueue.lastBaseUpdate = lastPendingUpdate; - } - } - } // These values may change as we process the queue. +function resetHasForceUpdateBeforeProcessing() { + hasForceUpdate = false; +} +function checkHasForceUpdateAfterProcessing() { + return hasForceUpdate; +} +function deferHiddenCallbacks(updateQueue) { + // When an update finishes on a hidden component, its callback should not + // be fired until/unless the component is made visible again. Stash the + // callback on the shared queue object so it can be fired later. + var newHiddenCallbacks = updateQueue.callbacks; - if (firstBaseUpdate !== null) { - // Iterate through the list of updates to compute the result. - var newState = queue.baseState; // TODO: Don't need to accumulate this. Instead, we can remove renderLanes - // from the original lanes. - - var newLanes = NoLanes; - var newBaseState = null; - var newFirstBaseUpdate = null; - var newLastBaseUpdate = null; - var update = firstBaseUpdate; + if (newHiddenCallbacks !== null) { + var existingHiddenCallbacks = updateQueue.shared.hiddenCallbacks; - do { - // An extra OffscreenLane bit is added to updates that were made to - // a hidden tree, so that we can distinguish them from updates that were - // already there when the tree was hidden. - var updateLane = removeLanes(update.lane, OffscreenLane); - var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then - // it's not a "base" update and we should disregard the extra base lanes - // that were added to renderLanes when we entered the Offscreen tree. - - var shouldSkipUpdate = isHiddenUpdate - ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) - : !isSubsetOfLanes(renderLanes, updateLane); - - if (shouldSkipUpdate) { - // Priority is insufficient. Skip this update. If this is the first - // skipped update, the previous update/state is the new base - // update/state. - var clone = { - lane: updateLane, - tag: update.tag, - payload: update.payload, - callback: update.callback, - next: null - }; + if (existingHiddenCallbacks === null) { + updateQueue.shared.hiddenCallbacks = newHiddenCallbacks; + } else { + updateQueue.shared.hiddenCallbacks = existingHiddenCallbacks.concat(newHiddenCallbacks); + } + } +} +function commitHiddenCallbacks(updateQueue, context) { + // This component is switching from hidden -> visible. Commit any callbacks + // that were previously deferred. + var hiddenCallbacks = updateQueue.shared.hiddenCallbacks; - if (newLastBaseUpdate === null) { - newFirstBaseUpdate = newLastBaseUpdate = clone; - newBaseState = newState; - } else { - newLastBaseUpdate = newLastBaseUpdate.next = clone; - } // Update the remaining priority in the queue. + if (hiddenCallbacks !== null) { + updateQueue.shared.hiddenCallbacks = null; - newLanes = mergeLanes(newLanes, updateLane); - } else { - // This update does have sufficient priority. - // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - if ( - updateLane !== NoLane && - updateLane === peekEntangledActionLane() - ) { - didReadFromEntangledAsyncAction = true; - } + for (var i = 0; i < hiddenCallbacks.length; i++) { + var callback = hiddenCallbacks[i]; + callCallback(callback, context); + } + } +} +function commitCallbacks(updateQueue, context) { + var callbacks = updateQueue.callbacks; - if (newLastBaseUpdate !== null) { - var _clone = { - // This update is going to be committed so we never want uncommit - // it. Using NoLane works because 0 is a subset of all bitmasks, so - // this will never be skipped by the check above. - lane: NoLane, - tag: update.tag, - payload: update.payload, - // When this update is rebased, we should not fire its - // callback again. - callback: null, - next: null - }; - newLastBaseUpdate = newLastBaseUpdate.next = _clone; - } // Process this update. - - newState = getStateFromUpdate( - workInProgress, - queue, - update, - newState, - props, - instance - ); - var callback = update.callback; + if (callbacks !== null) { + updateQueue.callbacks = null; - if (callback !== null) { - workInProgress.flags |= Callback; + for (var i = 0; i < callbacks.length; i++) { + var callback = callbacks[i]; + callCallback(callback, context); + } + } +} - if (isHiddenUpdate) { - workInProgress.flags |= Visibility; - } +// $FlowFixMe[method-unbinding] +var hasOwnProperty = Object.prototype.hasOwnProperty; - var callbacks = queue.callbacks; +/** + * Performs equality by iterating through keys on an object and returning false + * when any key has values which are not strictly equal between the arguments. + * Returns true when the values of all keys are strictly equal. + */ - if (callbacks === null) { - queue.callbacks = [callback]; - } else { - callbacks.push(callback); - } - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null +function shallowEqual(objA, objB) { + if (objectIs(objA, objB)) { + return true; + } - update = update.next; + if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) { + return false; + } - if (update === null) { - pendingQueue = queue.shared.pending; + var keysA = Object.keys(objA); + var keysB = Object.keys(objB); - if (pendingQueue === null) { - break; - } else { - // An update was scheduled from inside a reducer. Add the new - // pending updates to the end of the list and keep processing. - var _lastPendingUpdate = pendingQueue; // Intentionally unsound. Pending updates form a circular list, but we - // unravel them when transferring them to the base queue. - - var _firstPendingUpdate = _lastPendingUpdate.next; - _lastPendingUpdate.next = null; - update = _firstPendingUpdate; - queue.lastBaseUpdate = _lastPendingUpdate; - queue.shared.pending = null; - } - } - } while (true); + if (keysA.length !== keysB.length) { + return false; + } // Test for A's keys different from B. - if (newLastBaseUpdate === null) { - newBaseState = newState; - } - queue.baseState = newBaseState; - queue.firstBaseUpdate = newFirstBaseUpdate; - queue.lastBaseUpdate = newLastBaseUpdate; + for (var i = 0; i < keysA.length; i++) { + var currentKey = keysA[i]; - if (firstBaseUpdate === null) { - // `queue.lanes` is used for entangling transitions. We can set it back to - // zero once the queue is empty. - queue.shared.lanes = NoLanes; - } // Set the remaining expiration time to be whatever is remaining in the queue. - // This should be fine because the only two other things that contribute to - // expiration time are props and context. We're already in the middle of the - // begin phase by the time we start processing the queue, so we've already - // dealt with the props. Context in components that specify - // shouldComponentUpdate is tricky; but we'll have to account for - // that regardless. + if (!hasOwnProperty.call(objB, currentKey) || // $FlowFixMe[incompatible-use] lost refinement of `objB` + !objectIs(objA[currentKey], objB[currentKey])) { + return false; + } + } - markSkippedUpdateLanes(newLanes); - workInProgress.lanes = newLanes; - workInProgress.memoizedState = newState; - } + return true; +} - { - currentlyProcessingQueue = null; - } +var current = null; +var isRendering = false; +function getCurrentFiberOwnerNameInDevOrNull() { + { + if (current === null) { + return null; } - function callCallback(callback, context) { - if (typeof callback !== "function") { - throw new Error( - "Invalid argument passed as callback. Expected a function. Instead " + - ("received: " + callback) - ); - } + var owner = current._debugOwner; - callback.call(context); + if (owner != null) { + return getComponentNameFromOwner(owner); } + } - function resetHasForceUpdateBeforeProcessing() { - hasForceUpdate = false; - } - function checkHasForceUpdateAfterProcessing() { - return hasForceUpdate; - } - function deferHiddenCallbacks(updateQueue) { - // When an update finishes on a hidden component, its callback should not - // be fired until/unless the component is made visible again. Stash the - // callback on the shared queue object so it can be fired later. - var newHiddenCallbacks = updateQueue.callbacks; + return null; +} - if (newHiddenCallbacks !== null) { - var existingHiddenCallbacks = updateQueue.shared.hiddenCallbacks; +function getCurrentFiberStackInDev() { + { + if (current === null) { + return ''; + } // Safe because if current fiber exists, we are reconciling, + // and it is guaranteed to be the work-in-progress version. - if (existingHiddenCallbacks === null) { - updateQueue.shared.hiddenCallbacks = newHiddenCallbacks; - } else { - updateQueue.shared.hiddenCallbacks = - existingHiddenCallbacks.concat(newHiddenCallbacks); - } - } - } - function commitHiddenCallbacks(updateQueue, context) { - // This component is switching from hidden -> visible. Commit any callbacks - // that were previously deferred. - var hiddenCallbacks = updateQueue.shared.hiddenCallbacks; - if (hiddenCallbacks !== null) { - updateQueue.shared.hiddenCallbacks = null; + return getStackByFiberInDevAndProd(current); + } +} - for (var i = 0; i < hiddenCallbacks.length; i++) { - var callback = hiddenCallbacks[i]; - callCallback(callback, context); - } - } - } - function commitCallbacks(updateQueue, context) { - var callbacks = updateQueue.callbacks; +function resetCurrentFiber() { + { + ReactSharedInternals.getCurrentStack = null; + current = null; + isRendering = false; + } +} +function setCurrentFiber(fiber) { + { + ReactSharedInternals.getCurrentStack = fiber === null ? null : getCurrentFiberStackInDev; + current = fiber; + isRendering = false; + } +} +function getCurrentFiber() { + { + return current; + } +} +function setIsRendering(rendering) { + { + isRendering = rendering; + } +} - if (callbacks !== null) { - updateQueue.callbacks = null; +var ReactStrictModeWarnings = { + recordUnsafeLifecycleWarnings: function (fiber, instance) {}, + flushPendingUnsafeLifecycleWarnings: function () {}, + recordLegacyContextWarning: function (fiber, instance) {}, + flushLegacyContextWarning: function () {}, + discardPendingWarnings: function () {} +}; - for (var i = 0; i < callbacks.length; i++) { - var callback = callbacks[i]; - callCallback(callback, context); - } +{ + var findStrictRoot = function (fiber) { + var maybeStrictRoot = null; + var node = fiber; + + while (node !== null) { + if (node.mode & StrictLegacyMode) { + maybeStrictRoot = node; } + + node = node.return; } - // $FlowFixMe[method-unbinding] - var hasOwnProperty = Object.prototype.hasOwnProperty; + return maybeStrictRoot; + }; - /** - * Performs equality by iterating through keys on an object and returning false - * when any key has values which are not strictly equal between the arguments. - * Returns true when the values of all keys are strictly equal. - */ + var setToSortedString = function (set) { + var array = []; + set.forEach(function (value) { + array.push(value); + }); + return array.sort().join(', '); + }; - function shallowEqual(objA, objB) { - if (objectIs(objA, objB)) { - return true; - } + var pendingComponentWillMountWarnings = []; + var pendingUNSAFE_ComponentWillMountWarnings = []; + var pendingComponentWillReceivePropsWarnings = []; + var pendingUNSAFE_ComponentWillReceivePropsWarnings = []; + var pendingComponentWillUpdateWarnings = []; + var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about. - if ( - typeof objA !== "object" || - objA === null || - typeof objB !== "object" || - objB === null - ) { - return false; - } + var didWarnAboutUnsafeLifecycles = new Set(); - var keysA = Object.keys(objA); - var keysB = Object.keys(objB); + ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function (fiber, instance) { + // Dedupe strategy: Warn once per component. + if (didWarnAboutUnsafeLifecycles.has(fiber.type)) { + return; + } - if (keysA.length !== keysB.length) { - return false; - } // Test for A's keys different from B. + if (typeof instance.componentWillMount === 'function' && // Don't warn about react-lifecycles-compat polyfilled components. + instance.componentWillMount.__suppressDeprecationWarning !== true) { + pendingComponentWillMountWarnings.push(fiber); + } - for (var i = 0; i < keysA.length; i++) { - var currentKey = keysA[i]; + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillMount === 'function') { + pendingUNSAFE_ComponentWillMountWarnings.push(fiber); + } - if ( - !hasOwnProperty.call(objB, currentKey) || // $FlowFixMe[incompatible-use] lost refinement of `objB` - !objectIs(objA[currentKey], objB[currentKey]) - ) { - return false; - } - } + if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) { + pendingComponentWillReceivePropsWarnings.push(fiber); + } - return true; + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber); } - var current = null; - var isRendering = false; - function getCurrentFiberOwnerNameInDevOrNull() { - { - if (current === null) { - return null; - } + if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) { + pendingComponentWillUpdateWarnings.push(fiber); + } - var owner = current._debugOwner; + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillUpdate === 'function') { + pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber); + } + }; - if (owner != null) { - return getComponentNameFromOwner(owner); - } - } + ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = function () { + // We do an initial pass to gather component names + var componentWillMountUniqueNames = new Set(); - return null; + if (pendingComponentWillMountWarnings.length > 0) { + pendingComponentWillMountWarnings.forEach(function (fiber) { + componentWillMountUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillMountWarnings = []; } - function getCurrentFiberStackInDev() { - { - if (current === null) { - return ""; - } // Safe because if current fiber exists, we are reconciling, - // and it is guaranteed to be the work-in-progress version. + var UNSAFE_componentWillMountUniqueNames = new Set(); - return getStackByFiberInDevAndProd(current); - } + if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) { + pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) { + UNSAFE_componentWillMountUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillMountWarnings = []; } - function resetCurrentFiber() { - { - ReactSharedInternals.getCurrentStack = null; - current = null; - isRendering = false; - } - } - function setCurrentFiber(fiber) { - { - ReactSharedInternals.getCurrentStack = - fiber === null ? null : getCurrentFiberStackInDev; - current = fiber; - isRendering = false; - } - } - function getCurrentFiber() { - { - return current; - } - } - function setIsRendering(rendering) { - { - isRendering = rendering; - } + var componentWillReceivePropsUniqueNames = new Set(); + + if (pendingComponentWillReceivePropsWarnings.length > 0) { + pendingComponentWillReceivePropsWarnings.forEach(function (fiber) { + componentWillReceivePropsUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillReceivePropsWarnings = []; } - var ReactStrictModeWarnings = { - recordUnsafeLifecycleWarnings: function (fiber, instance) {}, - flushPendingUnsafeLifecycleWarnings: function () {}, - recordLegacyContextWarning: function (fiber, instance) {}, - flushLegacyContextWarning: function () {}, - discardPendingWarnings: function () {} - }; + var UNSAFE_componentWillReceivePropsUniqueNames = new Set(); - { - var findStrictRoot = function (fiber) { - var maybeStrictRoot = null; - var node = fiber; + if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) { + pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach(function (fiber) { + UNSAFE_componentWillReceivePropsUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillReceivePropsWarnings = []; + } - while (node !== null) { - if (node.mode & StrictLegacyMode) { - maybeStrictRoot = node; - } + var componentWillUpdateUniqueNames = new Set(); - node = node.return; - } + if (pendingComponentWillUpdateWarnings.length > 0) { + pendingComponentWillUpdateWarnings.forEach(function (fiber) { + componentWillUpdateUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillUpdateWarnings = []; + } - return maybeStrictRoot; - }; + var UNSAFE_componentWillUpdateUniqueNames = new Set(); - var setToSortedString = function (set) { - var array = []; - set.forEach(function (value) { - array.push(value); - }); - return array.sort().join(", "); - }; + if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) { + pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) { + UNSAFE_componentWillUpdateUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillUpdateWarnings = []; + } // Finally, we flush all the warnings + // UNSAFE_ ones before the deprecated ones, since they'll be 'louder' - var pendingComponentWillMountWarnings = []; - var pendingUNSAFE_ComponentWillMountWarnings = []; - var pendingComponentWillReceivePropsWarnings = []; - var pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - var pendingComponentWillUpdateWarnings = []; - var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about. - - var didWarnAboutUnsafeLifecycles = new Set(); - - ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function ( - fiber, - instance - ) { - // Dedupe strategy: Warn once per component. - if (didWarnAboutUnsafeLifecycles.has(fiber.type)) { - return; - } - if ( - typeof instance.componentWillMount === "function" && // Don't warn about react-lifecycles-compat polyfilled components. - instance.componentWillMount.__suppressDeprecationWarning !== true - ) { - pendingComponentWillMountWarnings.push(fiber); - } + if (UNSAFE_componentWillMountUniqueNames.size > 0) { + var sortedNames = setToSortedString(UNSAFE_componentWillMountUniqueNames); - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillMount === "function" - ) { - pendingUNSAFE_ComponentWillMountWarnings.push(fiber); - } + error('Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '\nPlease update the following components: %s', sortedNames); + } - if ( - typeof instance.componentWillReceiveProps === "function" && - instance.componentWillReceiveProps.__suppressDeprecationWarning !== - true - ) { - pendingComponentWillReceivePropsWarnings.push(fiber); - } + if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) { + var _sortedNames = setToSortedString(UNSAFE_componentWillReceivePropsUniqueNames); - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillReceiveProps === "function" - ) { - pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber); - } + error('Using UNSAFE_componentWillReceiveProps in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, " + 'refactor your code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n' + '\nPlease update the following components: %s', _sortedNames); + } - if ( - typeof instance.componentWillUpdate === "function" && - instance.componentWillUpdate.__suppressDeprecationWarning !== true - ) { - pendingComponentWillUpdateWarnings.push(fiber); - } + if (UNSAFE_componentWillUpdateUniqueNames.size > 0) { + var _sortedNames2 = setToSortedString(UNSAFE_componentWillUpdateUniqueNames); - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillUpdate === "function" - ) { - pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber); - } - }; + error('Using UNSAFE_componentWillUpdate in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '\nPlease update the following components: %s', _sortedNames2); + } - ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = - function () { - // We do an initial pass to gather component names - var componentWillMountUniqueNames = new Set(); - - if (pendingComponentWillMountWarnings.length > 0) { - pendingComponentWillMountWarnings.forEach(function (fiber) { - componentWillMountUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillMountWarnings = []; - } + if (componentWillMountUniqueNames.size > 0) { + var _sortedNames3 = setToSortedString(componentWillMountUniqueNames); - var UNSAFE_componentWillMountUniqueNames = new Set(); + warn('componentWillMount has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '* Rename componentWillMount to UNSAFE_componentWillMount to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames3); + } - if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) { - pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) { - UNSAFE_componentWillMountUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingUNSAFE_ComponentWillMountWarnings = []; - } + if (componentWillReceivePropsUniqueNames.size > 0) { + var _sortedNames4 = setToSortedString(componentWillReceivePropsUniqueNames); - var componentWillReceivePropsUniqueNames = new Set(); + warn('componentWillReceiveProps has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, refactor your " + 'code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n' + '* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames4); + } - if (pendingComponentWillReceivePropsWarnings.length > 0) { - pendingComponentWillReceivePropsWarnings.forEach(function (fiber) { - componentWillReceivePropsUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillReceivePropsWarnings = []; - } + if (componentWillUpdateUniqueNames.size > 0) { + var _sortedNames5 = setToSortedString(componentWillUpdateUniqueNames); - var UNSAFE_componentWillReceivePropsUniqueNames = new Set(); + warn('componentWillUpdate has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames5); + } + }; - if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) { - pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach( - function (fiber) { - UNSAFE_componentWillReceivePropsUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - } - ); - pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - } + var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about. - var componentWillUpdateUniqueNames = new Set(); + var didWarnAboutLegacyContext = new Set(); - if (pendingComponentWillUpdateWarnings.length > 0) { - pendingComponentWillUpdateWarnings.forEach(function (fiber) { - componentWillUpdateUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillUpdateWarnings = []; - } + ReactStrictModeWarnings.recordLegacyContextWarning = function (fiber, instance) { + var strictRoot = findStrictRoot(fiber); - var UNSAFE_componentWillUpdateUniqueNames = new Set(); - - if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) { - pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) { - UNSAFE_componentWillUpdateUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingUNSAFE_ComponentWillUpdateWarnings = []; - } // Finally, we flush all the warnings - // UNSAFE_ ones before the deprecated ones, since they'll be 'louder' - - if (UNSAFE_componentWillMountUniqueNames.size > 0) { - var sortedNames = setToSortedString( - UNSAFE_componentWillMountUniqueNames - ); + if (strictRoot === null) { + error('Expected to find a StrictMode component in a strict mode tree. ' + 'This error is likely caused by a bug in React. Please file an issue.'); - error( - "Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + - "\nPlease update the following components: %s", - sortedNames - ); - } + return; + } // Dedup strategy: Warn once per component. - if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) { - var _sortedNames = setToSortedString( - UNSAFE_componentWillReceivePropsUniqueNames - ); - error( - "Using UNSAFE_componentWillReceiveProps in strict mode is not recommended " + - "and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* If you're updating state whenever props change, " + - "refactor your code to use memoization techniques or move it to " + - "static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n" + - "\nPlease update the following components: %s", - _sortedNames - ); - } + if (didWarnAboutLegacyContext.has(fiber.type)) { + return; + } - if (UNSAFE_componentWillUpdateUniqueNames.size > 0) { - var _sortedNames2 = setToSortedString( - UNSAFE_componentWillUpdateUniqueNames - ); + var warningsForRoot = pendingLegacyContextWarning.get(strictRoot); - error( - "Using UNSAFE_componentWillUpdate in strict mode is not recommended " + - "and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "\nPlease update the following components: %s", - _sortedNames2 - ); - } + if (fiber.type.contextTypes != null || fiber.type.childContextTypes != null || instance !== null && typeof instance.getChildContext === 'function') { + if (warningsForRoot === undefined) { + warningsForRoot = []; + pendingLegacyContextWarning.set(strictRoot, warningsForRoot); + } - if (componentWillMountUniqueNames.size > 0) { - var _sortedNames3 = setToSortedString( - componentWillMountUniqueNames - ); + warningsForRoot.push(fiber); + } + }; - warn( - "componentWillMount has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + - "* Rename componentWillMount to UNSAFE_componentWillMount to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames3 - ); - } + ReactStrictModeWarnings.flushLegacyContextWarning = function () { + pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) { + if (fiberArray.length === 0) { + return; + } - if (componentWillReceivePropsUniqueNames.size > 0) { - var _sortedNames4 = setToSortedString( - componentWillReceivePropsUniqueNames - ); + var firstFiber = fiberArray[0]; + var uniqueNames = new Set(); + fiberArray.forEach(function (fiber) { + uniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutLegacyContext.add(fiber.type); + }); + var sortedNames = setToSortedString(uniqueNames); - warn( - "componentWillReceiveProps has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* If you're updating state whenever props change, refactor your " + - "code to use memoization techniques or move it to " + - "static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n" + - "* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames4 - ); - } + try { + setCurrentFiber(firstFiber); - if (componentWillUpdateUniqueNames.size > 0) { - var _sortedNames5 = setToSortedString( - componentWillUpdateUniqueNames - ); + error('Legacy context API has been detected within a strict-mode tree.' + '\n\nThe old API will be supported in all 16.x releases, but applications ' + 'using it should migrate to the new version.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here: https://react.dev/link/legacy-context', sortedNames); + } finally { + resetCurrentFiber(); + } + }); + }; + + ReactStrictModeWarnings.discardPendingWarnings = function () { + pendingComponentWillMountWarnings = []; + pendingUNSAFE_ComponentWillMountWarnings = []; + pendingComponentWillReceivePropsWarnings = []; + pendingUNSAFE_ComponentWillReceivePropsWarnings = []; + pendingComponentWillUpdateWarnings = []; + pendingUNSAFE_ComponentWillUpdateWarnings = []; + pendingLegacyContextWarning = new Map(); + }; +} - warn( - "componentWillUpdate has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames5 - ); - } - }; +function getThenablesFromState(state) { + { + var devState = state; + return devState.thenables; + } +} // An error that is thrown (e.g. by `use`) to trigger Suspense. If we +// detect this is caught by userspace, we'll log a warning in development. - var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about. - var didWarnAboutLegacyContext = new Set(); +var SuspenseException = new Error("Suspense Exception: This is not a real error! It's an implementation " + 'detail of `use` to interrupt the current render. You must either ' + 'rethrow it immediately, or move the `use` call outside of the ' + '`try/catch` block. Capturing without rethrowing will lead to ' + 'unexpected behavior.\n\n' + 'To handle async errors, wrap your component in an error boundary, or ' + "call the promise's `.catch` method and pass the result to `use`"); +var SuspenseyCommitException = new Error('Suspense Exception: This is not a real error, and should not leak into ' + "userspace. If you're seeing this, it's likely a bug in React."); // This is a noop thenable that we use to trigger a fallback in throwException. +// TODO: It would be better to refactor throwException into multiple functions +// so we can trigger a fallback directly without having to check the type. But +// for now this will do. - ReactStrictModeWarnings.recordLegacyContextWarning = function ( - fiber, - instance - ) { - var strictRoot = findStrictRoot(fiber); +var noopSuspenseyCommitThenable = { + then: function () { + { + error('Internal React error: A listener was unexpectedly attached to a ' + '"noop" thenable. This is a bug in React. Please file an issue.'); + } + } +}; +function createThenableState() { + // The ThenableState is created the first time a component suspends. If it + // suspends again, we'll reuse the same state. + { + return { + didWarnAboutUncachedPromise: false, + thenables: [] + }; + } +} +function isThenableResolved(thenable) { + var status = thenable.status; + return status === 'fulfilled' || status === 'rejected'; +} - if (strictRoot === null) { - error( - "Expected to find a StrictMode component in a strict mode tree. " + - "This error is likely caused by a bug in React. Please file an issue." - ); +function noop() {} - return; - } // Dedup strategy: Warn once per component. +function trackUsedThenable(thenableState, thenable, index) { + if (ReactSharedInternals.actQueue !== null) { + ReactSharedInternals.didUsePromise = true; + } - if (didWarnAboutLegacyContext.has(fiber.type)) { - return; - } + var trackedThenables = getThenablesFromState(thenableState); + var previous = trackedThenables[index]; - var warningsForRoot = pendingLegacyContextWarning.get(strictRoot); + if (previous === undefined) { + trackedThenables.push(thenable); + } else { + if (previous !== thenable) { + // Reuse the previous thenable, and drop the new one. We can assume + // they represent the same value, because components are idempotent. + { + var thenableStateDev = thenableState; - if ( - fiber.type.contextTypes != null || - fiber.type.childContextTypes != null || - (instance !== null && typeof instance.getChildContext === "function") - ) { - if (warningsForRoot === undefined) { - warningsForRoot = []; - pendingLegacyContextWarning.set(strictRoot, warningsForRoot); - } + if (!thenableStateDev.didWarnAboutUncachedPromise) { + // We should only warn the first time an uncached thenable is + // discovered per component, because if there are multiple, the + // subsequent ones are likely derived from the first. + // + // We track this on the thenableState instead of deduping using the + // component name like we usually do, because in the case of a + // promise-as-React-node, the owner component is likely different from + // the parent that's currently being reconciled. We'd have to track + // the owner using state, which we're trying to move away from. Though + // since this is dev-only, maybe that'd be OK. + // + // However, another benefit of doing it this way is we might + // eventually have a thenableState per memo/Forget boundary instead + // of per component, so this would allow us to have more + // granular warnings. + thenableStateDev.didWarnAboutUncachedPromise = true; // TODO: This warning should link to a corresponding docs page. - warningsForRoot.push(fiber); + error('A component was suspended by an uncached promise. Creating ' + 'promises inside a Client Component or hook is not yet ' + 'supported, except via a Suspense-compatible library or framework.'); } - }; + } // Avoid an unhandled rejection errors for the Promises that we'll + // intentionally ignore. - ReactStrictModeWarnings.flushLegacyContextWarning = function () { - pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) { - if (fiberArray.length === 0) { - return; - } - - var firstFiber = fiberArray[0]; - var uniqueNames = new Set(); - fiberArray.forEach(function (fiber) { - uniqueNames.add(getComponentNameFromFiber(fiber) || "Component"); - didWarnAboutLegacyContext.add(fiber.type); - }); - var sortedNames = setToSortedString(uniqueNames); - - try { - setCurrentFiber(firstFiber); - - error( - "Legacy context API has been detected within a strict-mode tree." + - "\n\nThe old API will be supported in all 16.x releases, but applications " + - "using it should migrate to the new version." + - "\n\nPlease update the following components: %s" + - "\n\nLearn more about this warning here: https://react.dev/link/legacy-context", - sortedNames - ); - } finally { - resetCurrentFiber(); - } - }); - }; - ReactStrictModeWarnings.discardPendingWarnings = function () { - pendingComponentWillMountWarnings = []; - pendingUNSAFE_ComponentWillMountWarnings = []; - pendingComponentWillReceivePropsWarnings = []; - pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - pendingComponentWillUpdateWarnings = []; - pendingUNSAFE_ComponentWillUpdateWarnings = []; - pendingLegacyContextWarning = new Map(); - }; + thenable.then(noop, noop); + thenable = previous; } + } // We use an expando to track the status and result of a thenable so that we + // can synchronously unwrap the value. Think of this as an extension of the + // Promise API, or a custom interface that is a superset of Thenable. + // + // If the thenable doesn't have a status, set it to "pending" and attach + // a listener that will update its status and result when it resolves. - function getThenablesFromState(state) { - { - var devState = state; - return devState.thenables; - } - } // An error that is thrown (e.g. by `use`) to trigger Suspense. If we - // detect this is caught by userspace, we'll log a warning in development. - - var SuspenseException = new Error( - "Suspense Exception: This is not a real error! It's an implementation " + - "detail of `use` to interrupt the current render. You must either " + - "rethrow it immediately, or move the `use` call outside of the " + - "`try/catch` block. Capturing without rethrowing will lead to " + - "unexpected behavior.\n\n" + - "To handle async errors, wrap your component in an error boundary, or " + - "call the promise's `.catch` method and pass the result to `use`" - ); - var SuspenseyCommitException = new Error( - "Suspense Exception: This is not a real error, and should not leak into " + - "userspace. If you're seeing this, it's likely a bug in React." - ); // This is a noop thenable that we use to trigger a fallback in throwException. - // TODO: It would be better to refactor throwException into multiple functions - // so we can trigger a fallback directly without having to check the type. But - // for now this will do. - - var noopSuspenseyCommitThenable = { - then: function () { - { - error( - "Internal React error: A listener was unexpectedly attached to a " + - '"noop" thenable. This is a bug in React. Please file an issue.' - ); - } - } - }; - function createThenableState() { - // The ThenableState is created the first time a component suspends. If it - // suspends again, we'll reuse the same state. + + switch (thenable.status) { + case 'fulfilled': { - return { - didWarnAboutUncachedPromise: false, - thenables: [] - }; + var fulfilledValue = thenable.value; + return fulfilledValue; } - } - function isThenableResolved(thenable) { - var status = thenable.status; - return status === "fulfilled" || status === "rejected"; - } - - function noop() {} - function trackUsedThenable(thenableState, thenable, index) { - if (ReactSharedInternals.actQueue !== null) { - ReactSharedInternals.didUsePromise = true; + case 'rejected': + { + var rejectedError = thenable.reason; + checkIfUseWrappedInAsyncCatch(rejectedError); + throw rejectedError; } - var trackedThenables = getThenablesFromState(thenableState); - var previous = trackedThenables[index]; - - if (previous === undefined) { - trackedThenables.push(thenable); - } else { - if (previous !== thenable) { - // Reuse the previous thenable, and drop the new one. We can assume - // they represent the same value, because components are idempotent. - { - var thenableStateDev = thenableState; - - if (!thenableStateDev.didWarnAboutUncachedPromise) { - // We should only warn the first time an uncached thenable is - // discovered per component, because if there are multiple, the - // subsequent ones are likely derived from the first. - // - // We track this on the thenableState instead of deduping using the - // component name like we usually do, because in the case of a - // promise-as-React-node, the owner component is likely different from - // the parent that's currently being reconciled. We'd have to track - // the owner using state, which we're trying to move away from. Though - // since this is dev-only, maybe that'd be OK. - // - // However, another benefit of doing it this way is we might - // eventually have a thenableState per memo/Forget boundary instead - // of per component, so this would allow us to have more - // granular warnings. - thenableStateDev.didWarnAboutUncachedPromise = true; // TODO: This warning should link to a corresponding docs page. - - error( - "A component was suspended by an uncached promise. Creating " + - "promises inside a Client Component or hook is not yet " + - "supported, except via a Suspense-compatible library or framework." - ); - } - } // Avoid an unhandled rejection errors for the Promises that we'll - // intentionally ignore. - + default: + { + if (typeof thenable.status === 'string') { + // Only instrument the thenable if the status if not defined. If + // it's defined, but an unknown value, assume it's been instrumented by + // some custom userspace implementation. We treat it as "pending". + // Attach a dummy listener, to ensure that any lazy initialization can + // happen. Flight lazily parses JSON when the value is actually awaited. thenable.then(noop, noop); - thenable = previous; - } - } // We use an expando to track the status and result of a thenable so that we - // can synchronously unwrap the value. Think of this as an extension of the - // Promise API, or a custom interface that is a superset of Thenable. - // - // If the thenable doesn't have a status, set it to "pending" and attach - // a listener that will update its status and result when it resolves. - - switch (thenable.status) { - case "fulfilled": { - var fulfilledValue = thenable.value; - return fulfilledValue; - } + } else { + // This is an uncached thenable that we haven't seen before. + // Detect infinite ping loops caused by uncached promises. + var root = getWorkInProgressRoot(); - case "rejected": { - var rejectedError = thenable.reason; - checkIfUseWrappedInAsyncCatch(rejectedError); - throw rejectedError; - } + if (root !== null && root.shellSuspendCounter > 100) { + // This root has suspended repeatedly in the shell without making any + // progress (i.e. committing something). This is highly suggestive of + // an infinite ping loop, often caused by an accidental Async Client + // Component. + // + // During a transition, we can suspend the work loop until the promise + // to resolve, but this is a sync render, so that's not an option. We + // also can't show a fallback, because none was provided. So our last + // resort is to throw an error. + // + // TODO: Remove this error in a future release. Other ways of handling + // this case include forcing a concurrent render, or putting the whole + // root into offscreen mode. + throw new Error('async/await is not yet supported in Client Components, only ' + 'Server Components. This error is often caused by accidentally ' + "adding `'use client'` to a module that was originally written " + 'for the server.'); + } - default: { - if (typeof thenable.status === "string") { - // Only instrument the thenable if the status if not defined. If - // it's defined, but an unknown value, assume it's been instrumented by - // some custom userspace implementation. We treat it as "pending". - // Attach a dummy listener, to ensure that any lazy initialization can - // happen. Flight lazily parses JSON when the value is actually awaited. - thenable.then(noop, noop); - } else { - // This is an uncached thenable that we haven't seen before. - // Detect infinite ping loops caused by uncached promises. - var root = getWorkInProgressRoot(); - - if (root !== null && root.shellSuspendCounter > 100) { - // This root has suspended repeatedly in the shell without making any - // progress (i.e. committing something). This is highly suggestive of - // an infinite ping loop, often caused by an accidental Async Client - // Component. - // - // During a transition, we can suspend the work loop until the promise - // to resolve, but this is a sync render, so that's not an option. We - // also can't show a fallback, because none was provided. So our last - // resort is to throw an error. - // - // TODO: Remove this error in a future release. Other ways of handling - // this case include forcing a concurrent render, or putting the whole - // root into offscreen mode. - throw new Error( - "async/await is not yet supported in Client Components, only " + - "Server Components. This error is often caused by accidentally " + - "adding `'use client'` to a module that was originally written " + - "for the server." - ); + var pendingThenable = thenable; + pendingThenable.status = 'pending'; + pendingThenable.then(function (fulfilledValue) { + if (thenable.status === 'pending') { + var fulfilledThenable = thenable; + fulfilledThenable.status = 'fulfilled'; + fulfilledThenable.value = fulfilledValue; } + }, function (error) { + if (thenable.status === 'pending') { + var rejectedThenable = thenable; + rejectedThenable.status = 'rejected'; + rejectedThenable.reason = error; + } + }); + } // Check one more time in case the thenable resolved synchronously. - var pendingThenable = thenable; - pendingThenable.status = "pending"; - pendingThenable.then( - function (fulfilledValue) { - if (thenable.status === "pending") { - var fulfilledThenable = thenable; - fulfilledThenable.status = "fulfilled"; - fulfilledThenable.value = fulfilledValue; - } - }, - function (error) { - if (thenable.status === "pending") { - var rejectedThenable = thenable; - rejectedThenable.status = "rejected"; - rejectedThenable.reason = error; - } - } - ); - } // Check one more time in case the thenable resolved synchronously. - switch (thenable.status) { - case "fulfilled": { + switch (thenable.status) { + case 'fulfilled': + { var fulfilledThenable = thenable; return fulfilledThenable.value; } - case "rejected": { + case 'rejected': + { var rejectedThenable = thenable; var _rejectedError = rejectedThenable.reason; checkIfUseWrappedInAsyncCatch(_rejectedError); throw _rejectedError; } - } // Suspend. - // - // Throwing here is an implementation detail that allows us to unwind the - // call stack. But we shouldn't allow it to leak into userspace. Throw an - // opaque placeholder value instead of the actual thenable. If it doesn't - // get captured by the work loop, log a warning, because that means - // something in userspace must have caught it. + } // Suspend. + // + // Throwing here is an implementation detail that allows us to unwind the + // call stack. But we shouldn't allow it to leak into userspace. Throw an + // opaque placeholder value instead of the actual thenable. If it doesn't + // get captured by the work loop, log a warning, because that means + // something in userspace must have caught it. - suspendedThenable = thenable; - { - needsToResetSuspendedThenableDEV = true; - } + suspendedThenable = thenable; - throw SuspenseException; + { + needsToResetSuspendedThenableDEV = true; } + + throw SuspenseException; } + } +} +// passed to the rest of the Suspense implementation — which, for historical +// reasons, expects to receive a thenable. + +var suspendedThenable = null; +var needsToResetSuspendedThenableDEV = false; +function getSuspendedThenable() { + // This is called right after `use` suspends by throwing an exception. `use` + // throws an opaque value instead of the thenable itself so that it can't be + // caught in userspace. Then the work loop accesses the actual thenable using + // this function. + if (suspendedThenable === null) { + throw new Error('Expected a suspended thenable. This is a bug in React. Please file ' + 'an issue.'); + } + + var thenable = suspendedThenable; + suspendedThenable = null; + + { + needsToResetSuspendedThenableDEV = false; + } + + return thenable; +} +function checkIfUseWrappedInTryCatch() { + { + // This was set right before SuspenseException was thrown, and it should + // have been cleared when the exception was handled. If it wasn't, + // it must have been caught by userspace. + if (needsToResetSuspendedThenableDEV) { + needsToResetSuspendedThenableDEV = false; + return true; } - // passed to the rest of the Suspense implementation — which, for historical - // reasons, expects to receive a thenable. + } - var suspendedThenable = null; - var needsToResetSuspendedThenableDEV = false; - function getSuspendedThenable() { - // This is called right after `use` suspends by throwing an exception. `use` - // throws an opaque value instead of the thenable itself so that it can't be - // caught in userspace. Then the work loop accesses the actual thenable using - // this function. - if (suspendedThenable === null) { - throw new Error( - "Expected a suspended thenable. This is a bug in React. Please file " + - "an issue." - ); - } + return false; +} +function checkIfUseWrappedInAsyncCatch(rejectedReason) { + // This check runs in prod, too, because it prevents a more confusing + // downstream error, where SuspenseException is caught by a promise and + // thrown asynchronously. + // TODO: Another way to prevent SuspenseException from leaking into an async + // execution context is to check the dispatcher every time `use` is called, + // or some equivalent. That might be preferable for other reasons, too, since + // it matches how we prevent similar mistakes for other hooks. + if (rejectedReason === SuspenseException) { + throw new Error('Hooks are not supported inside an async component. This ' + "error is often caused by accidentally adding `'use client'` " + 'to a module that was originally written for the server.'); + } +} - var thenable = suspendedThenable; - suspendedThenable = null; +var thenableState$1 = null; +var thenableIndexCounter$1 = 0; + +function mergeDebugInfo(outer, inner) { + + if (inner == null) { + return outer; + } else if (outer === null) { + return inner; + } else { + // If we have two debugInfo, we need to create a new one. This makes the array no longer + // live so we'll miss any future updates if we received more so ideally we should always + // do this after both have fully resolved/unsuspended. + return outer.concat(inner); + } +} - { - needsToResetSuspendedThenableDEV = false; - } +var didWarnAboutMaps; +var didWarnAboutGenerators; +var ownerHasKeyUseWarning; +var ownerHasFunctionTypeWarning; +var ownerHasSymbolTypeWarning; - return thenable; - } - function checkIfUseWrappedInTryCatch() { - { - // This was set right before SuspenseException was thrown, and it should - // have been cleared when the exception was handled. If it wasn't, - // it must have been caught by userspace. - if (needsToResetSuspendedThenableDEV) { - needsToResetSuspendedThenableDEV = false; - return true; - } - } +var warnForMissingKey = function (child, returnFiber) {}; - return false; +{ + didWarnAboutMaps = false; + didWarnAboutGenerators = false; + /** + * Warn if there's no key explicitly set on dynamic arrays of children or + * object keys are not valid. This allows us to keep track of children between + * updates. + */ + + ownerHasKeyUseWarning = {}; + ownerHasFunctionTypeWarning = {}; + ownerHasSymbolTypeWarning = {}; + + warnForMissingKey = function (child, returnFiber) { + if (child === null || typeof child !== 'object') { + return; } - function checkIfUseWrappedInAsyncCatch(rejectedReason) { - // This check runs in prod, too, because it prevents a more confusing - // downstream error, where SuspenseException is caught by a promise and - // thrown asynchronously. - // TODO: Another way to prevent SuspenseException from leaking into an async - // execution context is to check the dispatcher every time `use` is called, - // or some equivalent. That might be preferable for other reasons, too, since - // it matches how we prevent similar mistakes for other hooks. - if (rejectedReason === SuspenseException) { - throw new Error( - "Hooks are not supported inside an async component. This " + - "error is often caused by accidentally adding `'use client'` " + - "to a module that was originally written for the server." - ); - } - } - - var thenableState$1 = null; - var thenableIndexCounter$1 = 0; - - function mergeDebugInfo(outer, inner) { - if (inner == null) { - return outer; - } else if (outer === null) { - return inner; - } else { - // If we have two debugInfo, we need to create a new one. This makes the array no longer - // live so we'll miss any future updates if we received more so ideally we should always - // do this after both have fully resolved/unsuspended. - return outer.concat(inner); - } + + if (!child._store || child._store.validated || child.key != null) { + return; } - var didWarnAboutMaps; - var didWarnAboutGenerators; - var ownerHasKeyUseWarning; - var ownerHasFunctionTypeWarning; - var ownerHasSymbolTypeWarning; + if (typeof child._store !== 'object') { + throw new Error('React Component in warnForMissingKey should have a _store. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } // $FlowFixMe[cannot-write] unable to narrow type from mixed to writable object - var warnForMissingKey = function (child, returnFiber) {}; - { - didWarnAboutMaps = false; - didWarnAboutGenerators = false; - /** - * Warn if there's no key explicitly set on dynamic arrays of children or - * object keys are not valid. This allows us to keep track of children between - * updates. - */ - - ownerHasKeyUseWarning = {}; - ownerHasFunctionTypeWarning = {}; - ownerHasSymbolTypeWarning = {}; - - warnForMissingKey = function (child, returnFiber) { - if (child === null || typeof child !== "object") { - return; - } + child._store.validated = true; + var componentName = getComponentNameFromFiber(returnFiber) || 'Component'; - if (!child._store || child._store.validated || child.key != null) { - return; - } + if (ownerHasKeyUseWarning[componentName]) { + return; + } - if (typeof child._store !== "object") { - throw new Error( - "React Component in warnForMissingKey should have a _store. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } // $FlowFixMe[cannot-write] unable to narrow type from mixed to writable object + ownerHasKeyUseWarning[componentName] = true; - child._store.validated = true; - var componentName = - getComponentNameFromFiber(returnFiber) || "Component"; + error('Each child in a list should have a unique ' + '"key" prop. See https://react.dev/link/warning-keys for ' + 'more information.'); + }; +} - if (ownerHasKeyUseWarning[componentName]) { - return; - } +function unwrapThenable(thenable) { + var index = thenableIndexCounter$1; + thenableIndexCounter$1 += 1; - ownerHasKeyUseWarning[componentName] = true; + if (thenableState$1 === null) { + thenableState$1 = createThenableState(); + } - error( - "Each child in a list should have a unique " + - '"key" prop. See https://react.dev/link/warning-keys for ' + - "more information." - ); - }; - } + return trackUsedThenable(thenableState$1, thenable, index); +} - function unwrapThenable(thenable) { - var index = thenableIndexCounter$1; - thenableIndexCounter$1 += 1; +function coerceRef(returnFiber, current, workInProgress, element) { + var ref; - if (thenableState$1 === null) { - thenableState$1 = createThenableState(); - } + { + // Old behavior. + ref = element.ref; + } // TODO: If enableRefAsProp is on, we shouldn't use the `ref` field. We + // should always read the ref from the prop. - return trackUsedThenable(thenableState$1, thenable, index); - } - function coerceRef(returnFiber, current, workInProgress, element) { - var ref; + workInProgress.ref = ref; +} - { - // Old behavior. - ref = element.ref; - } // TODO: If enableRefAsProp is on, we shouldn't use the `ref` field. We - // should always read the ref from the prop. +function throwOnInvalidObjectType(returnFiber, newChild) { + // $FlowFixMe[method-unbinding] + var childString = Object.prototype.toString.call(newChild); + throw new Error("Objects are not valid as a React child (found: " + (childString === '[object Object]' ? 'object with keys {' + Object.keys(newChild).join(', ') + '}' : childString) + "). " + 'If you meant to render a collection of children, use an array ' + 'instead.'); +} - workInProgress.ref = ref; - } +function warnOnFunctionType(returnFiber, invalidChild) { + { + var parentName = getComponentNameFromFiber(returnFiber) || 'Component'; - function throwOnInvalidObjectType(returnFiber, newChild) { - // $FlowFixMe[method-unbinding] - var childString = Object.prototype.toString.call(newChild); - throw new Error( - "Objects are not valid as a React child (found: " + - (childString === "[object Object]" - ? "object with keys {" + Object.keys(newChild).join(", ") + "}" - : childString) + - "). " + - "If you meant to render a collection of children, use an array " + - "instead." - ); + if (ownerHasFunctionTypeWarning[parentName]) { + return; } - function warnOnFunctionType(returnFiber, invalidChild) { - { - var parentName = getComponentNameFromFiber(returnFiber) || "Component"; - - if (ownerHasFunctionTypeWarning[parentName]) { - return; - } + ownerHasFunctionTypeWarning[parentName] = true; + var name = invalidChild.displayName || invalidChild.name || 'Component'; - ownerHasFunctionTypeWarning[parentName] = true; - var name = invalidChild.displayName || invalidChild.name || "Component"; - - if (returnFiber.tag === HostRoot) { - error( - "Functions are not valid as a React child. This may happen if " + - "you return %s instead of <%s /> from render. " + - "Or maybe you meant to call this function rather than return it.\n" + - " root.render(%s)", - name, - name, - name - ); - } else { - error( - "Functions are not valid as a React child. This may happen if " + - "you return %s instead of <%s /> from render. " + - "Or maybe you meant to call this function rather than return it.\n" + - " <%s>{%s}", - name, - name, - parentName, - name, - parentName - ); - } - } + if (returnFiber.tag === HostRoot) { + error('Functions are not valid as a React child. This may happen if ' + 'you return %s instead of <%s /> from render. ' + 'Or maybe you meant to call this function rather than return it.\n' + ' root.render(%s)', name, name, name); + } else { + error('Functions are not valid as a React child. This may happen if ' + 'you return %s instead of <%s /> from render. ' + 'Or maybe you meant to call this function rather than return it.\n' + ' <%s>{%s}', name, name, parentName, name, parentName); } + } +} - function warnOnSymbolType(returnFiber, invalidChild) { - { - var parentName = getComponentNameFromFiber(returnFiber) || "Component"; +function warnOnSymbolType(returnFiber, invalidChild) { + { + var parentName = getComponentNameFromFiber(returnFiber) || 'Component'; - if (ownerHasSymbolTypeWarning[parentName]) { - return; - } + if (ownerHasSymbolTypeWarning[parentName]) { + return; + } - ownerHasSymbolTypeWarning[parentName] = true; // eslint-disable-next-line react-internal/safe-string-coercion + ownerHasSymbolTypeWarning[parentName] = true; // eslint-disable-next-line react-internal/safe-string-coercion - var name = String(invalidChild); + var name = String(invalidChild); - if (returnFiber.tag === HostRoot) { - error( - "Symbols are not valid as a React child.\n" + " root.render(%s)", - name - ); - } else { - error( - "Symbols are not valid as a React child.\n" + " <%s>%s", - parentName, - name, - parentName - ); - } - } + if (returnFiber.tag === HostRoot) { + error('Symbols are not valid as a React child.\n' + ' root.render(%s)', name); + } else { + error('Symbols are not valid as a React child.\n' + ' <%s>%s', parentName, name, parentName); } + } +} - function resolveLazy(lazyType) { - var payload = lazyType._payload; - var init = lazyType._init; - return init(payload); - } // This wrapper function exists because I expect to clone the code in each path - // to be able to optimize each path individually by branching early. This needs - // a compiler or we can do it manually. Helpers that don't need this branching - // live outside of this function. +function resolveLazy(lazyType) { + var payload = lazyType._payload; + var init = lazyType._init; + return init(payload); +} // This wrapper function exists because I expect to clone the code in each path +// to be able to optimize each path individually by branching early. This needs +// a compiler or we can do it manually. Helpers that don't need this branching +// live outside of this function. - function createChildReconciler(shouldTrackSideEffects) { - function deleteChild(returnFiber, childToDelete) { - if (!shouldTrackSideEffects) { - // Noop. - return; - } - var deletions = returnFiber.deletions; +function createChildReconciler(shouldTrackSideEffects) { + function deleteChild(returnFiber, childToDelete) { + if (!shouldTrackSideEffects) { + // Noop. + return; + } - if (deletions === null) { - returnFiber.deletions = [childToDelete]; - returnFiber.flags |= ChildDeletion; - } else { - deletions.push(childToDelete); - } - } + var deletions = returnFiber.deletions; - function deleteRemainingChildren(returnFiber, currentFirstChild) { - if (!shouldTrackSideEffects) { - // Noop. - return null; - } // TODO: For the shouldClone case, this could be micro-optimized a bit by - // assuming that after the first child we've already added everything. + if (deletions === null) { + returnFiber.deletions = [childToDelete]; + returnFiber.flags |= ChildDeletion; + } else { + deletions.push(childToDelete); + } + } - var childToDelete = currentFirstChild; + function deleteRemainingChildren(returnFiber, currentFirstChild) { + if (!shouldTrackSideEffects) { + // Noop. + return null; + } // TODO: For the shouldClone case, this could be micro-optimized a bit by + // assuming that after the first child we've already added everything. - while (childToDelete !== null) { - deleteChild(returnFiber, childToDelete); - childToDelete = childToDelete.sibling; - } - return null; - } + var childToDelete = currentFirstChild; - function mapRemainingChildren(currentFirstChild) { - // Add the remaining children to a temporary map so that we can find them by - // keys quickly. Implicit (null) keys get added to this set with their index - // instead. - var existingChildren = new Map(); - var existingChild = currentFirstChild; + while (childToDelete !== null) { + deleteChild(returnFiber, childToDelete); + childToDelete = childToDelete.sibling; + } - while (existingChild !== null) { - if (existingChild.key !== null) { - existingChildren.set(existingChild.key, existingChild); - } else { - existingChildren.set(existingChild.index, existingChild); - } + return null; + } - existingChild = existingChild.sibling; - } + function mapRemainingChildren(currentFirstChild) { + // Add the remaining children to a temporary map so that we can find them by + // keys quickly. Implicit (null) keys get added to this set with their index + // instead. + var existingChildren = new Map(); + var existingChild = currentFirstChild; - return existingChildren; + while (existingChild !== null) { + if (existingChild.key !== null) { + existingChildren.set(existingChild.key, existingChild); + } else { + existingChildren.set(existingChild.index, existingChild); } - function useFiber(fiber, pendingProps) { - // We currently set sibling to null and index to 0 here because it is easy - // to forget to do before returning it. E.g. for the single child case. - var clone = createWorkInProgress(fiber, pendingProps); - clone.index = 0; - clone.sibling = null; - return clone; - } + existingChild = existingChild.sibling; + } - function placeChild(newFiber, lastPlacedIndex, newIndex) { - newFiber.index = newIndex; + return existingChildren; + } - if (!shouldTrackSideEffects) { - // During hydration, the useId algorithm needs to know which fibers are - // part of a list of children (arrays, iterators). - newFiber.flags |= Forked; - return lastPlacedIndex; - } + function useFiber(fiber, pendingProps) { + // We currently set sibling to null and index to 0 here because it is easy + // to forget to do before returning it. E.g. for the single child case. + var clone = createWorkInProgress(fiber, pendingProps); + clone.index = 0; + clone.sibling = null; + return clone; + } - var current = newFiber.alternate; + function placeChild(newFiber, lastPlacedIndex, newIndex) { + newFiber.index = newIndex; - if (current !== null) { - var oldIndex = current.index; + if (!shouldTrackSideEffects) { + // During hydration, the useId algorithm needs to know which fibers are + // part of a list of children (arrays, iterators). + newFiber.flags |= Forked; + return lastPlacedIndex; + } - if (oldIndex < lastPlacedIndex) { - // This is a move. - newFiber.flags |= Placement | PlacementDEV; - return lastPlacedIndex; - } else { - // This item can stay in place. - return oldIndex; - } - } else { - // This is an insertion. - newFiber.flags |= Placement | PlacementDEV; - return lastPlacedIndex; - } - } + var current = newFiber.alternate; - function placeSingleChild(newFiber) { - // This is simpler for the single child case. We only need to do a - // placement for inserting new children. - if (shouldTrackSideEffects && newFiber.alternate === null) { - newFiber.flags |= Placement | PlacementDEV; - } + if (current !== null) { + var oldIndex = current.index; - return newFiber; - } - - function updateTextNode( - returnFiber, - current, - textContent, - lanes, - debugInfo - ) { - if (current === null || current.tag !== HostText) { - // Insert - var created = createFiberFromText( - textContent, - returnFiber.mode, - lanes - ); - created.return = returnFiber; + if (oldIndex < lastPlacedIndex) { + // This is a move. + newFiber.flags |= Placement | PlacementDEV; + return lastPlacedIndex; + } else { + // This item can stay in place. + return oldIndex; + } + } else { + // This is an insertion. + newFiber.flags |= Placement | PlacementDEV; + return lastPlacedIndex; + } + } - { - created._debugInfo = debugInfo; - } + function placeSingleChild(newFiber) { + // This is simpler for the single child case. We only need to do a + // placement for inserting new children. + if (shouldTrackSideEffects && newFiber.alternate === null) { + newFiber.flags |= Placement | PlacementDEV; + } - return created; - } else { - // Update - var existing = useFiber(current, textContent); - existing.return = returnFiber; + return newFiber; + } - { - existing._debugInfo = debugInfo; - } + function updateTextNode(returnFiber, current, textContent, lanes, debugInfo) { + if (current === null || current.tag !== HostText) { + // Insert + var created = createFiberFromText(textContent, returnFiber.mode, lanes); + created.return = returnFiber; - return existing; - } + { + created._debugInfo = debugInfo; } - function updateElement(returnFiber, current, element, lanes, debugInfo) { - var elementType = element.type; + return created; + } else { + // Update + var existing = useFiber(current, textContent); + existing.return = returnFiber; - if (elementType === REACT_FRAGMENT_TYPE) { - return updateFragment( - returnFiber, - current, - element.props.children, - lanes, - element.key, - debugInfo - ); - } + { + existing._debugInfo = debugInfo; + } - if (current !== null) { - if ( - current.elementType === elementType || // Keep this check inline so it only runs on the false path: - isCompatibleFamilyForHotReloading(current, element) || // Lazy types should reconcile their resolved type. - // We need to do this after the Hot Reloading check above, - // because hot reloading has different semantics than prod because - // it doesn't resuspend. So we can't let the call below suspend. - (typeof elementType === "object" && - elementType !== null && - elementType.$$typeof === REACT_LAZY_TYPE && - resolveLazy(elementType) === current.type) - ) { - // Move based on index - var existing = useFiber(current, element.props); - coerceRef(returnFiber, current, existing, element); - existing.return = returnFiber; + return existing; + } + } - { - existing._debugOwner = element._owner; - existing._debugInfo = debugInfo; - } + function updateElement(returnFiber, current, element, lanes, debugInfo) { + var elementType = element.type; - return existing; - } - } // Insert + if (elementType === REACT_FRAGMENT_TYPE) { + return updateFragment(returnFiber, current, element.props.children, lanes, element.key, debugInfo); + } - var created = createFiberFromElement(element, returnFiber.mode, lanes); - coerceRef(returnFiber, current, created, element); - created.return = returnFiber; + if (current !== null) { + if (current.elementType === elementType || ( // Keep this check inline so it only runs on the false path: + isCompatibleFamilyForHotReloading(current, element) ) || // Lazy types should reconcile their resolved type. + // We need to do this after the Hot Reloading check above, + // because hot reloading has different semantics than prod because + // it doesn't resuspend. So we can't let the call below suspend. + typeof elementType === 'object' && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === current.type) { + // Move based on index + var existing = useFiber(current, element.props); + coerceRef(returnFiber, current, existing, element); + existing.return = returnFiber; { - created._debugInfo = debugInfo; + existing._debugOwner = element._owner; + existing._debugInfo = debugInfo; } - return created; + return existing; } + } // Insert - function updatePortal(returnFiber, current, portal, lanes, debugInfo) { - if ( - current === null || - current.tag !== HostPortal || - current.stateNode.containerInfo !== portal.containerInfo || - current.stateNode.implementation !== portal.implementation - ) { - // Insert - var created = createFiberFromPortal(portal, returnFiber.mode, lanes); - created.return = returnFiber; - { - created._debugInfo = debugInfo; - } + var created = createFiberFromElement(element, returnFiber.mode, lanes); + coerceRef(returnFiber, current, created, element); + created.return = returnFiber; - return created; - } else { - // Update - var existing = useFiber(current, portal.children || []); - existing.return = returnFiber; + { + created._debugInfo = debugInfo; + } - { - existing._debugInfo = debugInfo; - } + return created; + } - return existing; - } + function updatePortal(returnFiber, current, portal, lanes, debugInfo) { + if (current === null || current.tag !== HostPortal || current.stateNode.containerInfo !== portal.containerInfo || current.stateNode.implementation !== portal.implementation) { + // Insert + var created = createFiberFromPortal(portal, returnFiber.mode, lanes); + created.return = returnFiber; + + { + created._debugInfo = debugInfo; } - function updateFragment( - returnFiber, - current, - fragment, - lanes, - key, - debugInfo - ) { - if (current === null || current.tag !== Fragment) { - // Insert - var created = createFiberFromFragment( - fragment, - returnFiber.mode, - lanes, - key - ); - created.return = returnFiber; + return created; + } else { + // Update + var existing = useFiber(current, portal.children || []); + existing.return = returnFiber; - { - created._debugInfo = debugInfo; - } + { + existing._debugInfo = debugInfo; + } - return created; - } else { - // Update - var existing = useFiber(current, fragment); - existing.return = returnFiber; + return existing; + } + } - { - existing._debugInfo = debugInfo; - } + function updateFragment(returnFiber, current, fragment, lanes, key, debugInfo) { + if (current === null || current.tag !== Fragment) { + // Insert + var created = createFiberFromFragment(fragment, returnFiber.mode, lanes, key); + created.return = returnFiber; - return existing; - } + { + created._debugInfo = debugInfo; } - function createChild(returnFiber, newChild, lanes, debugInfo) { - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys. If the previous node is implicitly keyed - // we can continue to replace it without aborting even if it is not a text - // node. - var created = createFiberFromText( - // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - returnFiber.mode, - lanes - ); - created.return = returnFiber; - - { - created._debugInfo = debugInfo; - } - - return created; - } + return created; + } else { + // Update + var existing = useFiber(current, fragment); + existing.return = returnFiber; - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - var _created = createFiberFromElement( - newChild, - returnFiber.mode, - lanes - ); + { + existing._debugInfo = debugInfo; + } - coerceRef(returnFiber, null, _created, newChild); - _created.return = returnFiber; + return existing; + } + } - { - _created._debugInfo = mergeDebugInfo( - debugInfo, - newChild._debugInfo - ); - } + function createChild(returnFiber, newChild, lanes, debugInfo) { + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys. If the previous node is implicitly keyed + // we can continue to replace it without aborting even if it is not a text + // node. + var created = createFiberFromText( // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, returnFiber.mode, lanes); + created.return = returnFiber; - return _created; - } + { + created._debugInfo = debugInfo; + } - case REACT_PORTAL_TYPE: { - var _created2 = createFiberFromPortal( - newChild, - returnFiber.mode, - lanes - ); + return created; + } - _created2.return = returnFiber; + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + var _created = createFiberFromElement(newChild, returnFiber.mode, lanes); - { - _created2._debugInfo = debugInfo; - } + coerceRef(returnFiber, null, _created, newChild); + _created.return = returnFiber; - return _created2; + { + _created._debugInfo = mergeDebugInfo(debugInfo, newChild._debugInfo); } - case REACT_LAZY_TYPE: { - var payload = newChild._payload; - var init = newChild._init; - return createChild( - returnFiber, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) // call merge after init - ); - } + return _created; } - if (isArray(newChild) || getIteratorFn(newChild)) { - var _created3 = createFiberFromFragment( - newChild, - returnFiber.mode, - lanes, - null - ); + case REACT_PORTAL_TYPE: + { + var _created2 = createFiberFromPortal(newChild, returnFiber.mode, lanes); - _created3.return = returnFiber; + _created2.return = returnFiber; { - _created3._debugInfo = mergeDebugInfo( - debugInfo, - newChild._debugInfo - ); + _created2._debugInfo = debugInfo; } - return _created3; - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return createChild( - returnFiber, - unwrapThenable(thenable), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); + return _created2; } - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return createChild( - returnFiber, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo + case REACT_LAZY_TYPE: + { + var payload = newChild._payload; + var init = newChild._init; + return createChild(returnFiber, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo) // call merge after init ); } + } - throwOnInvalidObjectType(returnFiber, newChild); - } + if (isArray(newChild) || getIteratorFn(newChild)) { + var _created3 = createFiberFromFragment(newChild, returnFiber.mode, lanes, null); - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } + _created3.return = returnFiber; - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } + { + _created3._debugInfo = mergeDebugInfo(debugInfo, newChild._debugInfo); } - return null; + return _created3; + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. + + + if (typeof newChild.then === 'function') { + var thenable = newChild; + return createChild(returnFiber, unwrapThenable(thenable), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - function updateSlot(returnFiber, oldFiber, newChild, lanes, debugInfo) { - // Update the fiber if the keys match, otherwise return null. - var key = oldFiber !== null ? oldFiber.key : null; + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return createChild(returnFiber, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys. If the previous node is implicitly keyed - // we can continue to replace it without aborting even if it is not a text - // node. - if (key !== null) { - return null; - } + throwOnInvalidObjectType(returnFiber, newChild); + } - return updateTextNode( - returnFiber, - oldFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes, - debugInfo - ); - } + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - if (newChild.key === key) { - return updateElement( - returnFiber, - oldFiber, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } else { - return null; - } - } + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } - case REACT_PORTAL_TYPE: { - if (newChild.key === key) { - return updatePortal( - returnFiber, - oldFiber, - newChild, - lanes, - debugInfo - ); - } else { - return null; - } - } + return null; + } - case REACT_LAZY_TYPE: { - var payload = newChild._payload; - var init = newChild._init; - return updateSlot( - returnFiber, - oldFiber, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } - } + function updateSlot(returnFiber, oldFiber, newChild, lanes, debugInfo) { + // Update the fiber if the keys match, otherwise return null. + var key = oldFiber !== null ? oldFiber.key : null; - if (isArray(newChild) || getIteratorFn(newChild)) { - if (key !== null) { + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys. If the previous node is implicitly keyed + // we can continue to replace it without aborting even if it is not a text + // node. + if (key !== null) { + return null; + } + + return updateTextNode(returnFiber, oldFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes, debugInfo); + } + + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + if (newChild.key === key) { + return updateElement(returnFiber, oldFiber, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } else { return null; } + } - return updateFragment( - returnFiber, - oldFiber, - newChild, - lanes, - null, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return updateSlot( - returnFiber, - oldFiber, - unwrapThenable(thenable), - lanes, - debugInfo - ); + case REACT_PORTAL_TYPE: + { + if (newChild.key === key) { + return updatePortal(returnFiber, oldFiber, newChild, lanes, debugInfo); + } else { + return null; + } } - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return updateSlot( - returnFiber, - oldFiber, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); + case REACT_LAZY_TYPE: + { + var payload = newChild._payload; + var init = newChild._init; + return updateSlot(returnFiber, oldFiber, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } + } - throwOnInvalidObjectType(returnFiber, newChild); + if (isArray(newChild) || getIteratorFn(newChild)) { + if (key !== null) { + return null; } - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } + return updateFragment(returnFiber, oldFiber, newChild, lanes, null, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } - } - return null; + if (typeof newChild.then === 'function') { + var thenable = newChild; + return updateSlot(returnFiber, oldFiber, unwrapThenable(thenable), lanes, debugInfo); } - function updateFromMap( - existingChildren, - returnFiber, - newIdx, - newChild, - lanes, - debugInfo - ) { - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys, so we neither have to check the old nor - // new node for the key. If both are text nodes, they match. - var matchedFiber = existingChildren.get(newIdx) || null; - return updateTextNode( - returnFiber, - matchedFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes, - debugInfo - ); - } - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - var _matchedFiber = - existingChildren.get( - newChild.key === null ? newIdx : newChild.key - ) || null; - - return updateElement( - returnFiber, - _matchedFiber, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return updateSlot(returnFiber, oldFiber, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - case REACT_PORTAL_TYPE: { - var _matchedFiber2 = - existingChildren.get( - newChild.key === null ? newIdx : newChild.key - ) || null; - - return updatePortal( - returnFiber, - _matchedFiber2, - newChild, - lanes, - debugInfo - ); - } + throwOnInvalidObjectType(returnFiber, newChild); + } - case REACT_LAZY_TYPE: - var payload = newChild._payload; - var init = newChild._init; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - if (isArray(newChild) || getIteratorFn(newChild)) { - var _matchedFiber3 = existingChildren.get(newIdx) || null; + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } - return updateFragment( - returnFiber, - _matchedFiber3, - newChild, - lanes, - null, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - unwrapThenable(thenable), - lanes, - debugInfo - ); - } + return null; + } - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } + function updateFromMap(existingChildren, returnFiber, newIdx, newChild, lanes, debugInfo) { + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys, so we neither have to check the old nor + // new node for the key. If both are text nodes, they match. + var matchedFiber = existingChildren.get(newIdx) || null; + return updateTextNode(returnFiber, matchedFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes, debugInfo); + } - throwOnInvalidObjectType(returnFiber, newChild); - } + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + var _matchedFiber = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null; - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); + return updateElement(returnFiber, _matchedFiber, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); + case REACT_PORTAL_TYPE: + { + var _matchedFiber2 = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null; + + return updatePortal(returnFiber, _matchedFiber2, newChild, lanes, debugInfo); } - } - return null; + case REACT_LAZY_TYPE: + var payload = newChild._payload; + var init = newChild._init; + return updateFromMap(existingChildren, returnFiber, newIdx, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - /** - * Warns if there is a duplicate or missing key - */ - function warnOnInvalidKey(child, knownKeys, returnFiber) { - { - if (typeof child !== "object" || child === null) { - return knownKeys; - } + if (isArray(newChild) || getIteratorFn(newChild)) { + var _matchedFiber3 = existingChildren.get(newIdx) || null; - switch (child.$$typeof) { - case REACT_ELEMENT_TYPE: - case REACT_PORTAL_TYPE: - warnForMissingKey(child, returnFiber); - var key = child.key; + return updateFragment(returnFiber, _matchedFiber3, newChild, lanes, null, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - if (typeof key !== "string") { - break; - } - if (knownKeys === null) { - knownKeys = new Set(); - knownKeys.add(key); - break; - } + if (typeof newChild.then === 'function') { + var thenable = newChild; + return updateFromMap(existingChildren, returnFiber, newIdx, unwrapThenable(thenable), lanes, debugInfo); + } - if (!knownKeys.has(key)) { - knownKeys.add(key); - break; - } + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return updateFromMap(existingChildren, returnFiber, newIdx, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - error( - "Encountered two children with the same key, `%s`. " + - "Keys should be unique so that components maintain their identity " + - "across updates. Non-unique keys may cause children to be " + - "duplicated and/or omitted — the behavior is unsupported and " + - "could change in a future version.", - key - ); + throwOnInvalidObjectType(returnFiber, newChild); + } - break; + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - case REACT_LAZY_TYPE: - var payload = child._payload; - var init = child._init; - warnOnInvalidKey(init(payload), knownKeys, returnFiber); - break; - } - } + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } + return null; + } + /** + * Warns if there is a duplicate or missing key + */ + + + function warnOnInvalidKey(child, knownKeys, returnFiber) { + { + if (typeof child !== 'object' || child === null) { return knownKeys; } - function reconcileChildrenArray( - returnFiber, - currentFirstChild, - newChildren, - lanes, - debugInfo - ) { - // This algorithm can't optimize by searching from both ends since we - // don't have backpointers on fibers. I'm trying to see how far we can get - // with that model. If it ends up not being worth the tradeoffs, we can - // add it later. - // Even with a two ended optimization, we'd want to optimize for the case - // where there are few changes and brute force the comparison instead of - // going for the Map. It'd like to explore hitting that path first in - // forward-only mode and only go for the Map once we notice that we need - // lots of look ahead. This doesn't handle reversal as well as two ended - // search but that's unusual. Besides, for the two ended optimization to - // work on Iterables, we'd need to copy the whole set. - // In this first iteration, we'll just live with hitting the bad case - // (adding everything to a Map) in for every insert/move. - // If you change this code, also update reconcileChildrenIterator() which - // uses the same algorithm. - { - // First, validate keys. - var knownKeys = null; + switch (child.$$typeof) { + case REACT_ELEMENT_TYPE: + case REACT_PORTAL_TYPE: + warnForMissingKey(child, returnFiber); + var key = child.key; - for (var i = 0; i < newChildren.length; i++) { - var child = newChildren[i]; - knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); + if (typeof key !== 'string') { + break; } - } - var resultingFirstChild = null; - var previousNewFiber = null; - var oldFiber = currentFirstChild; - var lastPlacedIndex = 0; - var newIdx = 0; - var nextOldFiber = null; - - for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) { - if (oldFiber.index > newIdx) { - nextOldFiber = oldFiber; - oldFiber = null; - } else { - nextOldFiber = oldFiber.sibling; + if (knownKeys === null) { + knownKeys = new Set(); + knownKeys.add(key); + break; } - var newFiber = updateSlot( - returnFiber, - oldFiber, - newChildren[newIdx], - lanes, - debugInfo - ); - - if (newFiber === null) { - // TODO: This breaks on empty slots like null children. That's - // unfortunate because it triggers the slow path all the time. We need - // a better way to communicate whether this was a miss or null, - // boolean, undefined, etc. - if (oldFiber === null) { - oldFiber = nextOldFiber; - } - + if (!knownKeys.has(key)) { + knownKeys.add(key); break; } - if (shouldTrackSideEffects) { - if (oldFiber && newFiber.alternate === null) { - // We matched the slot, but we didn't reuse the existing fiber, so we - // need to delete the existing child. - deleteChild(returnFiber, oldFiber); - } - } + error('Encountered two children with the same key, `%s`. ' + 'Keys should be unique so that components maintain their identity ' + 'across updates. Non-unique keys may cause children to be ' + 'duplicated and/or omitted — the behavior is unsupported and ' + 'could change in a future version.', key); - lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + break; - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = newFiber; - } else { - // TODO: Defer siblings if we're not at the right index for this slot. - // I.e. if we had null values before, then we want to defer this - // for each null value. However, we also don't want to call updateSlot - // with the previous one. - previousNewFiber.sibling = newFiber; - } + case REACT_LAZY_TYPE: + var payload = child._payload; + var init = child._init; + warnOnInvalidKey(init(payload), knownKeys, returnFiber); + break; + } + } - previousNewFiber = newFiber; - oldFiber = nextOldFiber; - } + return knownKeys; + } + + function reconcileChildrenArray(returnFiber, currentFirstChild, newChildren, lanes, debugInfo) { + // This algorithm can't optimize by searching from both ends since we + // don't have backpointers on fibers. I'm trying to see how far we can get + // with that model. If it ends up not being worth the tradeoffs, we can + // add it later. + // Even with a two ended optimization, we'd want to optimize for the case + // where there are few changes and brute force the comparison instead of + // going for the Map. It'd like to explore hitting that path first in + // forward-only mode and only go for the Map once we notice that we need + // lots of look ahead. This doesn't handle reversal as well as two ended + // search but that's unusual. Besides, for the two ended optimization to + // work on Iterables, we'd need to copy the whole set. + // In this first iteration, we'll just live with hitting the bad case + // (adding everything to a Map) in for every insert/move. + // If you change this code, also update reconcileChildrenIterator() which + // uses the same algorithm. + { + // First, validate keys. + var knownKeys = null; + + for (var i = 0; i < newChildren.length; i++) { + var child = newChildren[i]; + knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); + } + } - if (newIdx === newChildren.length) { - // We've reached the end of the new children. We can delete the rest. - deleteRemainingChildren(returnFiber, oldFiber); + var resultingFirstChild = null; + var previousNewFiber = null; + var oldFiber = currentFirstChild; + var lastPlacedIndex = 0; + var newIdx = 0; + var nextOldFiber = null; - return resultingFirstChild; - } + for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) { + if (oldFiber.index > newIdx) { + nextOldFiber = oldFiber; + oldFiber = null; + } else { + nextOldFiber = oldFiber.sibling; + } - if (oldFiber === null) { - // If we don't have any more existing children we can choose a fast path - // since the rest will all be insertions. - for (; newIdx < newChildren.length; newIdx++) { - var _newFiber = createChild( - returnFiber, - newChildren[newIdx], - lanes, - debugInfo - ); + var newFiber = updateSlot(returnFiber, oldFiber, newChildren[newIdx], lanes, debugInfo); - if (_newFiber === null) { - continue; - } + if (newFiber === null) { + // TODO: This breaks on empty slots like null children. That's + // unfortunate because it triggers the slow path all the time. We need + // a better way to communicate whether this was a miss or null, + // boolean, undefined, etc. + if (oldFiber === null) { + oldFiber = nextOldFiber; + } - lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx); + break; + } - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = _newFiber; - } else { - previousNewFiber.sibling = _newFiber; - } + if (shouldTrackSideEffects) { + if (oldFiber && newFiber.alternate === null) { + // We matched the slot, but we didn't reuse the existing fiber, so we + // need to delete the existing child. + deleteChild(returnFiber, oldFiber); + } + } - previousNewFiber = _newFiber; - } + lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); - return resultingFirstChild; - } // Add all children to a key map for quick lookups. - - var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - - for (; newIdx < newChildren.length; newIdx++) { - var _newFiber2 = updateFromMap( - existingChildren, - returnFiber, - newIdx, - newChildren[newIdx], - lanes, - debugInfo - ); - - if (_newFiber2 !== null) { - if (shouldTrackSideEffects) { - if (_newFiber2.alternate !== null) { - // The new fiber is a work in progress, but if there exists a - // current, that means that we reused the fiber. We need to delete - // it from the child list so that we don't add it to the deletion - // list. - existingChildren.delete( - _newFiber2.key === null ? newIdx : _newFiber2.key - ); - } - } + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = newFiber; + } else { + // TODO: Defer siblings if we're not at the right index for this slot. + // I.e. if we had null values before, then we want to defer this + // for each null value. However, we also don't want to call updateSlot + // with the previous one. + previousNewFiber.sibling = newFiber; + } - lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx); + previousNewFiber = newFiber; + oldFiber = nextOldFiber; + } - if (previousNewFiber === null) { - resultingFirstChild = _newFiber2; - } else { - previousNewFiber.sibling = _newFiber2; - } + if (newIdx === newChildren.length) { + // We've reached the end of the new children. We can delete the rest. + deleteRemainingChildren(returnFiber, oldFiber); - previousNewFiber = _newFiber2; - } - } + return resultingFirstChild; + } - if (shouldTrackSideEffects) { - // Any existing children that weren't consumed above were deleted. We need - // to add them to the deletion list. - existingChildren.forEach(function (child) { - return deleteChild(returnFiber, child); - }); - } + if (oldFiber === null) { + // If we don't have any more existing children we can choose a fast path + // since the rest will all be insertions. + for (; newIdx < newChildren.length; newIdx++) { + var _newFiber = createChild(returnFiber, newChildren[newIdx], lanes, debugInfo); - return resultingFirstChild; - } - - function reconcileChildrenIterator( - returnFiber, - currentFirstChild, - newChildrenIterable, - lanes, - debugInfo - ) { - // This is the same implementation as reconcileChildrenArray(), - // but using the iterator instead. - var iteratorFn = getIteratorFn(newChildrenIterable); - - if (typeof iteratorFn !== "function") { - throw new Error( - "An object is not an iterable. This error is likely caused by a bug in " + - "React. Please file an issue." - ); + if (_newFiber === null) { + continue; } - { - // We don't support rendering Generators because it's a mutation. - // See https://github.com/facebook/react/issues/12995 - if ( - typeof Symbol === "function" && // $FlowFixMe[prop-missing] Flow doesn't know about toStringTag - newChildrenIterable[Symbol.toStringTag] === "Generator" - ) { - if (!didWarnAboutGenerators) { - error( - "Using Generators as children is unsupported and will likely yield " + - "unexpected results because enumerating a generator mutates it. " + - "You may convert it to an array with `Array.from()` or the " + - "`[...spread]` operator before rendering. Keep in mind " + - "you might need to polyfill these features for older browsers." - ); - } + lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx); - didWarnAboutGenerators = true; - } // Warn about using Maps as children + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = _newFiber; + } else { + previousNewFiber.sibling = _newFiber; + } - if (newChildrenIterable.entries === iteratorFn) { - if (!didWarnAboutMaps) { - error( - "Using Maps as children is not supported. " + - "Use an array of keyed ReactElements instead." - ); - } + previousNewFiber = _newFiber; + } - didWarnAboutMaps = true; - } // First, validate keys. - // We'll get a different iterator later for the main pass. + return resultingFirstChild; + } // Add all children to a key map for quick lookups. - var _newChildren = iteratorFn.call(newChildrenIterable); - if (_newChildren) { - var knownKeys = null; + var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - var _step = _newChildren.next(); + for (; newIdx < newChildren.length; newIdx++) { + var _newFiber2 = updateFromMap(existingChildren, returnFiber, newIdx, newChildren[newIdx], lanes, debugInfo); - for (; !_step.done; _step = _newChildren.next()) { - var child = _step.value; - knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); - } + if (_newFiber2 !== null) { + if (shouldTrackSideEffects) { + if (_newFiber2.alternate !== null) { + // The new fiber is a work in progress, but if there exists a + // current, that means that we reused the fiber. We need to delete + // it from the child list so that we don't add it to the deletion + // list. + existingChildren.delete(_newFiber2.key === null ? newIdx : _newFiber2.key); } } - var newChildren = iteratorFn.call(newChildrenIterable); + lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx); - if (newChildren == null) { - throw new Error("An iterable object provided no iterator."); + if (previousNewFiber === null) { + resultingFirstChild = _newFiber2; + } else { + previousNewFiber.sibling = _newFiber2; } - var resultingFirstChild = null; - var previousNewFiber = null; - var oldFiber = currentFirstChild; - var lastPlacedIndex = 0; - var newIdx = 0; - var nextOldFiber = null; - var step = newChildren.next(); - - for ( - ; - oldFiber !== null && !step.done; - newIdx++, step = newChildren.next() - ) { - if (oldFiber.index > newIdx) { - nextOldFiber = oldFiber; - oldFiber = null; - } else { - nextOldFiber = oldFiber.sibling; - } - - var newFiber = updateSlot( - returnFiber, - oldFiber, - step.value, - lanes, - debugInfo - ); - - if (newFiber === null) { - // TODO: This breaks on empty slots like null children. That's - // unfortunate because it triggers the slow path all the time. We need - // a better way to communicate whether this was a miss or null, - // boolean, undefined, etc. - if (oldFiber === null) { - oldFiber = nextOldFiber; - } + previousNewFiber = _newFiber2; + } + } - break; - } + if (shouldTrackSideEffects) { + // Any existing children that weren't consumed above were deleted. We need + // to add them to the deletion list. + existingChildren.forEach(function (child) { + return deleteChild(returnFiber, child); + }); + } - if (shouldTrackSideEffects) { - if (oldFiber && newFiber.alternate === null) { - // We matched the slot, but we didn't reuse the existing fiber, so we - // need to delete the existing child. - deleteChild(returnFiber, oldFiber); - } - } + return resultingFirstChild; + } - lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + function reconcileChildrenIterator(returnFiber, currentFirstChild, newChildrenIterable, lanes, debugInfo) { + // This is the same implementation as reconcileChildrenArray(), + // but using the iterator instead. + var iteratorFn = getIteratorFn(newChildrenIterable); - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = newFiber; - } else { - // TODO: Defer siblings if we're not at the right index for this slot. - // I.e. if we had null values before, then we want to defer this - // for each null value. However, we also don't want to call updateSlot - // with the previous one. - previousNewFiber.sibling = newFiber; - } + if (typeof iteratorFn !== 'function') { + throw new Error('An object is not an iterable. This error is likely caused by a bug in ' + 'React. Please file an issue.'); + } - previousNewFiber = newFiber; - oldFiber = nextOldFiber; + { + // We don't support rendering Generators because it's a mutation. + // See https://github.com/facebook/react/issues/12995 + if (typeof Symbol === 'function' && // $FlowFixMe[prop-missing] Flow doesn't know about toStringTag + newChildrenIterable[Symbol.toStringTag] === 'Generator') { + if (!didWarnAboutGenerators) { + error('Using Generators as children is unsupported and will likely yield ' + 'unexpected results because enumerating a generator mutates it. ' + 'You may convert it to an array with `Array.from()` or the ' + '`[...spread]` operator before rendering. Keep in mind ' + 'you might need to polyfill these features for older browsers.'); } - if (step.done) { - // We've reached the end of the new children. We can delete the rest. - deleteRemainingChildren(returnFiber, oldFiber); + didWarnAboutGenerators = true; + } // Warn about using Maps as children + - return resultingFirstChild; + if (newChildrenIterable.entries === iteratorFn) { + if (!didWarnAboutMaps) { + error('Using Maps as children is not supported. ' + 'Use an array of keyed ReactElements instead.'); } - if (oldFiber === null) { - // If we don't have any more existing children we can choose a fast path - // since the rest will all be insertions. - for (; !step.done; newIdx++, step = newChildren.next()) { - var _newFiber3 = createChild( - returnFiber, - step.value, - lanes, - debugInfo - ); + didWarnAboutMaps = true; + } // First, validate keys. + // We'll get a different iterator later for the main pass. - if (_newFiber3 === null) { - continue; - } - lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx); + var _newChildren = iteratorFn.call(newChildrenIterable); - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = _newFiber3; - } else { - previousNewFiber.sibling = _newFiber3; - } + if (_newChildren) { + var knownKeys = null; - previousNewFiber = _newFiber3; - } + var _step = _newChildren.next(); - return resultingFirstChild; - } // Add all children to a key map for quick lookups. - - var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - - for (; !step.done; newIdx++, step = newChildren.next()) { - var _newFiber4 = updateFromMap( - existingChildren, - returnFiber, - newIdx, - step.value, - lanes, - debugInfo - ); - - if (_newFiber4 !== null) { - if (shouldTrackSideEffects) { - if (_newFiber4.alternate !== null) { - // The new fiber is a work in progress, but if there exists a - // current, that means that we reused the fiber. We need to delete - // it from the child list so that we don't add it to the deletion - // list. - existingChildren.delete( - _newFiber4.key === null ? newIdx : _newFiber4.key - ); - } - } + for (; !_step.done; _step = _newChildren.next()) { + var child = _step.value; + knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); + } + } + } - lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx); + var newChildren = iteratorFn.call(newChildrenIterable); - if (previousNewFiber === null) { - resultingFirstChild = _newFiber4; - } else { - previousNewFiber.sibling = _newFiber4; - } + if (newChildren == null) { + throw new Error('An iterable object provided no iterator.'); + } - previousNewFiber = _newFiber4; - } + var resultingFirstChild = null; + var previousNewFiber = null; + var oldFiber = currentFirstChild; + var lastPlacedIndex = 0; + var newIdx = 0; + var nextOldFiber = null; + var step = newChildren.next(); + + for (; oldFiber !== null && !step.done; newIdx++, step = newChildren.next()) { + if (oldFiber.index > newIdx) { + nextOldFiber = oldFiber; + oldFiber = null; + } else { + nextOldFiber = oldFiber.sibling; + } + + var newFiber = updateSlot(returnFiber, oldFiber, step.value, lanes, debugInfo); + + if (newFiber === null) { + // TODO: This breaks on empty slots like null children. That's + // unfortunate because it triggers the slow path all the time. We need + // a better way to communicate whether this was a miss or null, + // boolean, undefined, etc. + if (oldFiber === null) { + oldFiber = nextOldFiber; } - if (shouldTrackSideEffects) { - // Any existing children that weren't consumed above were deleted. We need - // to add them to the deletion list. - existingChildren.forEach(function (child) { - return deleteChild(returnFiber, child); - }); + break; + } + + if (shouldTrackSideEffects) { + if (oldFiber && newFiber.alternate === null) { + // We matched the slot, but we didn't reuse the existing fiber, so we + // need to delete the existing child. + deleteChild(returnFiber, oldFiber); } + } - return resultingFirstChild; - } - - function reconcileSingleTextNode( - returnFiber, - currentFirstChild, - textContent, - lanes - ) { - // There's no need to check for keys on text nodes since we don't have a - // way to define them. - if (currentFirstChild !== null && currentFirstChild.tag === HostText) { - // We already have an existing node so let's just update it and delete - // the rest. - deleteRemainingChildren(returnFiber, currentFirstChild.sibling); - var existing = useFiber(currentFirstChild, textContent); - existing.return = returnFiber; - return existing; - } // The existing first child is not a text node so we need to create one - // and delete the existing ones. - - deleteRemainingChildren(returnFiber, currentFirstChild); - var created = createFiberFromText(textContent, returnFiber.mode, lanes); - created.return = returnFiber; - return created; - } - - function reconcileSingleElement( - returnFiber, - currentFirstChild, - element, - lanes, - debugInfo - ) { - var key = element.key; - var child = currentFirstChild; - - while (child !== null) { - // TODO: If key === null and child.key === null, then this only applies to - // the first item in the list. - if (child.key === key) { - var elementType = element.type; - - if (elementType === REACT_FRAGMENT_TYPE) { - if (child.tag === Fragment) { - deleteRemainingChildren(returnFiber, child.sibling); - var existing = useFiber(child, element.props.children); - existing.return = returnFiber; + lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); - { - existing._debugOwner = element._owner; - existing._debugInfo = debugInfo; - } + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = newFiber; + } else { + // TODO: Defer siblings if we're not at the right index for this slot. + // I.e. if we had null values before, then we want to defer this + // for each null value. However, we also don't want to call updateSlot + // with the previous one. + previousNewFiber.sibling = newFiber; + } - return existing; - } - } else { - if ( - child.elementType === elementType || // Keep this check inline so it only runs on the false path: - isCompatibleFamilyForHotReloading(child, element) || // Lazy types should reconcile their resolved type. - // We need to do this after the Hot Reloading check above, - // because hot reloading has different semantics than prod because - // it doesn't resuspend. So we can't let the call below suspend. - (typeof elementType === "object" && - elementType !== null && - elementType.$$typeof === REACT_LAZY_TYPE && - resolveLazy(elementType) === child.type) - ) { - deleteRemainingChildren(returnFiber, child.sibling); + previousNewFiber = newFiber; + oldFiber = nextOldFiber; + } - var _existing = useFiber(child, element.props); + if (step.done) { + // We've reached the end of the new children. We can delete the rest. + deleteRemainingChildren(returnFiber, oldFiber); - coerceRef(returnFiber, child, _existing, element); - _existing.return = returnFiber; + return resultingFirstChild; + } - { - _existing._debugOwner = element._owner; - _existing._debugInfo = debugInfo; - } + if (oldFiber === null) { + // If we don't have any more existing children we can choose a fast path + // since the rest will all be insertions. + for (; !step.done; newIdx++, step = newChildren.next()) { + var _newFiber3 = createChild(returnFiber, step.value, lanes, debugInfo); - return _existing; - } - } // Didn't match. + if (_newFiber3 === null) { + continue; + } - deleteRemainingChildren(returnFiber, child); - break; - } else { - deleteChild(returnFiber, child); - } + lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx); - child = child.sibling; + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = _newFiber3; + } else { + previousNewFiber.sibling = _newFiber3; } - if (element.type === REACT_FRAGMENT_TYPE) { - var created = createFiberFromFragment( - element.props.children, - returnFiber.mode, - lanes, - element.key - ); - created.return = returnFiber; + previousNewFiber = _newFiber3; + } - { - created._debugInfo = debugInfo; - } + return resultingFirstChild; + } // Add all children to a key map for quick lookups. - return created; - } else { - var _created4 = createFiberFromElement( - element, - returnFiber.mode, - lanes - ); - coerceRef(returnFiber, currentFirstChild, _created4, element); - _created4.return = returnFiber; + var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - { - _created4._debugInfo = debugInfo; - } + for (; !step.done; newIdx++, step = newChildren.next()) { + var _newFiber4 = updateFromMap(existingChildren, returnFiber, newIdx, step.value, lanes, debugInfo); - return _created4; + if (_newFiber4 !== null) { + if (shouldTrackSideEffects) { + if (_newFiber4.alternate !== null) { + // The new fiber is a work in progress, but if there exists a + // current, that means that we reused the fiber. We need to delete + // it from the child list so that we don't add it to the deletion + // list. + existingChildren.delete(_newFiber4.key === null ? newIdx : _newFiber4.key); + } } - } - function reconcileSinglePortal( - returnFiber, - currentFirstChild, - portal, - lanes, - debugInfo - ) { - var key = portal.key; - var child = currentFirstChild; - - while (child !== null) { - // TODO: If key === null and child.key === null, then this only applies to - // the first item in the list. - if (child.key === key) { - if ( - child.tag === HostPortal && - child.stateNode.containerInfo === portal.containerInfo && - child.stateNode.implementation === portal.implementation - ) { - deleteRemainingChildren(returnFiber, child.sibling); - var existing = useFiber(child, portal.children || []); - existing.return = returnFiber; - return existing; - } else { - deleteRemainingChildren(returnFiber, child); - break; - } - } else { - deleteChild(returnFiber, child); - } + lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx); - child = child.sibling; + if (previousNewFiber === null) { + resultingFirstChild = _newFiber4; + } else { + previousNewFiber.sibling = _newFiber4; } - var created = createFiberFromPortal(portal, returnFiber.mode, lanes); - created.return = returnFiber; - return created; - } // This API will tag the children with the side-effect of the reconciliation - // itself. They will be added to the side-effect list as we pass through the - // children and the parent. - - function reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - newChild, - lanes, - debugInfo - ) { - // This function is only recursive for Usables/Lazy and not nested arrays. - // That's so that using a Lazy wrapper is unobservable to the Fragment - // convention. - // If the top level item is an array, we treat it as a set of children, - // not as a fragment. Nested arrays on the other hand will be treated as - // fragment nodes. Recursion happens at the normal flow. - // Handle top level unkeyed fragments as if they were arrays. - // This leads to an ambiguity between <>{[...]} and <>.... - // We treat the ambiguous cases above the same. - // We don't use recursion here because a fragment inside a fragment - // is no longer considered "top level" for these purposes. - var isUnkeyedTopLevelFragment = - typeof newChild === "object" && - newChild !== null && - newChild.type === REACT_FRAGMENT_TYPE && - newChild.key === null; - - if (isUnkeyedTopLevelFragment) { - newChild = newChild.props.children; - } // Handle object types - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: - return placeSingleChild( - reconcileSingleElement( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ) - ); - - case REACT_PORTAL_TYPE: - return placeSingleChild( - reconcileSinglePortal( - returnFiber, - currentFirstChild, - newChild, - lanes - ) - ); - - case REACT_LAZY_TYPE: - var payload = newChild._payload; - var init = newChild._init; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } - - if (isArray(newChild)) { - return reconcileChildrenArray( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + previousNewFiber = _newFiber4; + } + } - if (getIteratorFn(newChild)) { - return reconcileChildrenIterator( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usables are a valid React node type. When React encounters a Usable in - // a child position, it unwraps it using the same algorithm as `use`. For - // example, for promises, React will throw an exception to unwind the - // stack, then replay the component once the promise resolves. - // - // A difference from `use` is that React will keep unwrapping the value - // until it reaches a non-Usable type. - // - // e.g. Usable>> should resolve to T - // - // The structure is a bit unfortunate. Ideally, we shouldn't need to - // replay the entire begin phase of the parent fiber in order to reconcile - // the children again. This would require a somewhat significant refactor, - // because reconcilation happens deep within the begin phase, and - // depending on the type of work, not always at the end. We should - // consider as an future improvement. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - unwrapThenable(thenable), - lanes, - mergeDebugInfo(debugInfo, thenable._debugInfo) - ); - } + if (shouldTrackSideEffects) { + // Any existing children that weren't consumed above were deleted. We need + // to add them to the deletion list. + existingChildren.forEach(function (child) { + return deleteChild(returnFiber, child); + }); + } - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } + return resultingFirstChild; + } + + function reconcileSingleTextNode(returnFiber, currentFirstChild, textContent, lanes) { + // There's no need to check for keys on text nodes since we don't have a + // way to define them. + if (currentFirstChild !== null && currentFirstChild.tag === HostText) { + // We already have an existing node so let's just update it and delete + // the rest. + deleteRemainingChildren(returnFiber, currentFirstChild.sibling); + var existing = useFiber(currentFirstChild, textContent); + existing.return = returnFiber; + return existing; + } // The existing first child is not a text node so we need to create one + // and delete the existing ones. + + + deleteRemainingChildren(returnFiber, currentFirstChild); + var created = createFiberFromText(textContent, returnFiber.mode, lanes); + created.return = returnFiber; + return created; + } + + function reconcileSingleElement(returnFiber, currentFirstChild, element, lanes, debugInfo) { + var key = element.key; + var child = currentFirstChild; + + while (child !== null) { + // TODO: If key === null and child.key === null, then this only applies to + // the first item in the list. + if (child.key === key) { + var elementType = element.type; - throwOnInvalidObjectType(returnFiber, newChild); - } + if (elementType === REACT_FRAGMENT_TYPE) { + if (child.tag === Fragment) { + deleteRemainingChildren(returnFiber, child.sibling); + var existing = useFiber(child, element.props.children); + existing.return = returnFiber; - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - return placeSingleChild( - reconcileSingleTextNode( - returnFiber, - currentFirstChild, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes - ) - ); - } + { + existing._debugOwner = element._owner; + existing._debugInfo = debugInfo; + } - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); + return existing; } + } else { + if (child.elementType === elementType || ( // Keep this check inline so it only runs on the false path: + isCompatibleFamilyForHotReloading(child, element) ) || // Lazy types should reconcile their resolved type. + // We need to do this after the Hot Reloading check above, + // because hot reloading has different semantics than prod because + // it doesn't resuspend. So we can't let the call below suspend. + typeof elementType === 'object' && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === child.type) { + deleteRemainingChildren(returnFiber, child.sibling); - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } - } // Remaining cases are all treated as empty. + var _existing = useFiber(child, element.props); - return deleteRemainingChildren(returnFiber, currentFirstChild); - } + coerceRef(returnFiber, child, _existing, element); + _existing.return = returnFiber; - function reconcileChildFibers( - returnFiber, - currentFirstChild, - newChild, - lanes - ) { - // This indirection only exists so we can reset `thenableState` at the end. - // It should get inlined by Closure. - thenableIndexCounter$1 = 0; - var firstChildFiber = reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - newChild, - lanes, - null // debugInfo - ); - thenableState$1 = null; // Don't bother to reset `thenableIndexCounter` to 0 because it always gets - // set at the beginning. + { + _existing._debugOwner = element._owner; + _existing._debugInfo = debugInfo; + } - return firstChildFiber; - } + return _existing; + } + } // Didn't match. - return reconcileChildFibers; - } - var reconcileChildFibers = createChildReconciler(true); - var mountChildFibers = createChildReconciler(false); - function resetChildReconcilerOnUnwind() { - // On unwind, clear any pending thenables that were used. - thenableState$1 = null; - thenableIndexCounter$1 = 0; - } - function cloneChildFibers(current, workInProgress) { - if (current !== null && workInProgress.child !== current.child) { - throw new Error("Resuming work not yet implemented."); + deleteRemainingChildren(returnFiber, child); + break; + } else { + deleteChild(returnFiber, child); } - if (workInProgress.child === null) { - return; - } + child = child.sibling; + } - var currentChild = workInProgress.child; - var newChild = createWorkInProgress( - currentChild, - currentChild.pendingProps - ); - workInProgress.child = newChild; - newChild.return = workInProgress; + if (element.type === REACT_FRAGMENT_TYPE) { + var created = createFiberFromFragment(element.props.children, returnFiber.mode, lanes, element.key); + created.return = returnFiber; - while (currentChild.sibling !== null) { - currentChild = currentChild.sibling; - newChild = newChild.sibling = createWorkInProgress( - currentChild, - currentChild.pendingProps - ); - newChild.return = workInProgress; + { + created._debugInfo = debugInfo; } - newChild.sibling = null; - } // Reset a workInProgress child set to prepare it for a second pass. + return created; + } else { + var _created4 = createFiberFromElement(element, returnFiber.mode, lanes); - function resetChildFibers(workInProgress, lanes) { - var child = workInProgress.child; + coerceRef(returnFiber, currentFirstChild, _created4, element); + _created4.return = returnFiber; - while (child !== null) { - resetWorkInProgress(child, lanes); - child = child.sibling; + { + _created4._debugInfo = debugInfo; } - } - // TODO: This isn't being used yet, but it's intended to replace the - // InvisibleParentContext that is currently managed by SuspenseContext. + return _created4; + } + } - var currentTreeHiddenStackCursor = createCursor(null); - var prevEntangledRenderLanesCursor = createCursor(NoLanes); - function pushHiddenContext(fiber, context) { - var prevEntangledRenderLanes = getEntangledRenderLanes(); - push(prevEntangledRenderLanesCursor, prevEntangledRenderLanes, fiber); - push(currentTreeHiddenStackCursor, context, fiber); // When rendering a subtree that's currently hidden, we must include all - // lanes that would have rendered if the hidden subtree hadn't been deferred. - // That is, in order to reveal content from hidden -> visible, we must commit - // all the updates that we skipped when we originally hid the tree. + function reconcileSinglePortal(returnFiber, currentFirstChild, portal, lanes, debugInfo) { + var key = portal.key; + var child = currentFirstChild; - setEntangledRenderLanes( - mergeLanes(prevEntangledRenderLanes, context.baseLanes) - ); - } - function reuseHiddenContextOnStack(fiber) { - // This subtree is not currently hidden, so we don't need to add any lanes - // to the render lanes. But we still need to push something to avoid a - // context mismatch. Reuse the existing context on the stack. - push(prevEntangledRenderLanesCursor, getEntangledRenderLanes(), fiber); - push( - currentTreeHiddenStackCursor, - currentTreeHiddenStackCursor.current, - fiber - ); - } - function popHiddenContext(fiber) { - // Restore the previous render lanes from the stack - setEntangledRenderLanes(prevEntangledRenderLanesCursor.current); - pop(currentTreeHiddenStackCursor, fiber); - pop(prevEntangledRenderLanesCursor, fiber); - } - function isCurrentTreeHidden() { - return currentTreeHiddenStackCursor.current !== null; - } - - // suspends, i.e. it's the nearest `catch` block on the stack. - - var suspenseHandlerStackCursor = createCursor(null); // Represents the outermost boundary that is not visible in the current tree. - // Everything above this is the "shell". When this is null, it means we're - // rendering in the shell of the app. If it's non-null, it means we're rendering - // deeper than the shell, inside a new tree that wasn't already visible. - // - // The main way we use this concept is to determine whether showing a fallback - // would result in a desirable or undesirable loading state. Activing a fallback - // in the shell is considered an undersirable loading state, because it would - // mean hiding visible (albeit stale) content in the current tree — we prefer to - // show the stale content, rather than switch to a fallback. But showing a - // fallback in a new tree is fine, because there's no stale content to - // prefer instead. - - var shellBoundary = null; - function getShellBoundary() { - return shellBoundary; - } - function pushPrimaryTreeSuspenseHandler(handler) { - // TODO: Pass as argument - var current = handler.alternate; - // propagated a single level. For example, when ForceSuspenseFallback is set, - // it should only force the nearest Suspense boundary into fallback mode. - - pushSuspenseListContext( - handler, - setDefaultShallowSuspenseListContext(suspenseStackCursor.current) - ); // Experimental feature: Some Suspense boundaries are marked as having an - // to push a nested Suspense handler, because it will get replaced by the - // outer fallback, anyway. Consider this as a future optimization. - - push(suspenseHandlerStackCursor, handler, handler); - - if (shellBoundary === null) { - if (current === null || isCurrentTreeHidden()) { - // This boundary is not visible in the current UI. - shellBoundary = handler; + while (child !== null) { + // TODO: If key === null and child.key === null, then this only applies to + // the first item in the list. + if (child.key === key) { + if (child.tag === HostPortal && child.stateNode.containerInfo === portal.containerInfo && child.stateNode.implementation === portal.implementation) { + deleteRemainingChildren(returnFiber, child.sibling); + var existing = useFiber(child, portal.children || []); + existing.return = returnFiber; + return existing; } else { - var prevState = current.memoizedState; - - if (prevState !== null) { - // This boundary is showing a fallback in the current UI. - shellBoundary = handler; - } + deleteRemainingChildren(returnFiber, child); + break; } + } else { + deleteChild(returnFiber, child); } + + child = child.sibling; } - function pushFallbackTreeSuspenseHandler(fiber) { - // We're about to render the fallback. If something in the fallback suspends, - // it's akin to throwing inside of a `catch` block. This boundary should not - // capture. Reuse the existing handler on the stack. - reuseSuspenseHandlerOnStack(fiber); - } - function pushOffscreenSuspenseHandler(fiber) { - if (fiber.tag === OffscreenComponent) { - // A SuspenseList context is only pushed here to avoid a push/pop mismatch. - // Reuse the current value on the stack. - // TODO: We can avoid needing to push here by by forking popSuspenseHandler - // into separate functions for Suspense and Offscreen. - pushSuspenseListContext(fiber, suspenseStackCursor.current); - push(suspenseHandlerStackCursor, fiber, fiber); - if (shellBoundary !== null); - else { - var current = fiber.alternate; + var created = createFiberFromPortal(portal, returnFiber.mode, lanes); + created.return = returnFiber; + return created; + } // This API will tag the children with the side-effect of the reconciliation + // itself. They will be added to the side-effect list as we pass through the + // children and the parent. - if (current !== null) { - var prevState = current.memoizedState; - if (prevState !== null) { - // This is the first boundary in the stack that's already showing - // a fallback. So everything outside is considered the shell. - shellBoundary = fiber; - } - } - } - } else { - // This is a LegacyHidden component. - reuseSuspenseHandlerOnStack(fiber); + function reconcileChildFibersImpl(returnFiber, currentFirstChild, newChild, lanes, debugInfo) { + // This function is only recursive for Usables/Lazy and not nested arrays. + // That's so that using a Lazy wrapper is unobservable to the Fragment + // convention. + // If the top level item is an array, we treat it as a set of children, + // not as a fragment. Nested arrays on the other hand will be treated as + // fragment nodes. Recursion happens at the normal flow. + // Handle top level unkeyed fragments as if they were arrays. + // This leads to an ambiguity between <>{[...]} and <>.... + // We treat the ambiguous cases above the same. + // We don't use recursion here because a fragment inside a fragment + // is no longer considered "top level" for these purposes. + var isUnkeyedTopLevelFragment = typeof newChild === 'object' && newChild !== null && newChild.type === REACT_FRAGMENT_TYPE && newChild.key === null; + + if (isUnkeyedTopLevelFragment) { + newChild = newChild.props.children; + } // Handle object types + + + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + return placeSingleChild(reconcileSingleElement(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo))); + + case REACT_PORTAL_TYPE: + return placeSingleChild(reconcileSinglePortal(returnFiber, currentFirstChild, newChild, lanes)); + + case REACT_LAZY_TYPE: + var payload = newChild._payload; + var init = newChild._init; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - } - function reuseSuspenseHandlerOnStack(fiber) { - pushSuspenseListContext(fiber, suspenseStackCursor.current); - push(suspenseHandlerStackCursor, getSuspenseHandler(), fiber); - } - function getSuspenseHandler() { - return suspenseHandlerStackCursor.current; - } - function popSuspenseHandler(fiber) { - pop(suspenseHandlerStackCursor, fiber); - if (shellBoundary === fiber) { - // Popping back into the shell. - shellBoundary = null; + if (isArray(newChild)) { + return reconcileChildrenArray(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - popSuspenseListContext(fiber); - } // SuspenseList context - // TODO: Move to a separate module? We may change the SuspenseList - // implementation to hide/show in the commit phase, anyway. + if (getIteratorFn(newChild)) { + return reconcileChildrenIterator(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usables are a valid React node type. When React encounters a Usable in + // a child position, it unwraps it using the same algorithm as `use`. For + // example, for promises, React will throw an exception to unwind the + // stack, then replay the component once the promise resolves. + // + // A difference from `use` is that React will keep unwrapping the value + // until it reaches a non-Usable type. + // + // e.g. Usable>> should resolve to T + // + // The structure is a bit unfortunate. Ideally, we shouldn't need to + // replay the entire begin phase of the parent fiber in order to reconcile + // the children again. This would require a somewhat significant refactor, + // because reconcilation happens deep within the begin phase, and + // depending on the type of work, not always at the end. We should + // consider as an future improvement. + - var DefaultSuspenseContext = 0; - var SubtreeSuspenseContextMask = 1; // ForceSuspenseFallback can be used by SuspenseList to force newly added - // items into their fallback state during one of the render passes. + if (typeof newChild.then === 'function') { + var thenable = newChild; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, unwrapThenable(thenable), lanes, mergeDebugInfo(debugInfo, thenable._debugInfo)); + } - var ForceSuspenseFallback = 2; - var suspenseStackCursor = createCursor(DefaultSuspenseContext); - function hasSuspenseListContext(parentContext, flag) { - return (parentContext & flag) !== 0; - } - function setDefaultShallowSuspenseListContext(parentContext) { - return parentContext & SubtreeSuspenseContextMask; - } - function setShallowSuspenseListContext(parentContext, shallowContext) { - return (parentContext & SubtreeSuspenseContextMask) | shallowContext; - } - function pushSuspenseListContext(fiber, newContext) { - push(suspenseStackCursor, newContext, fiber); + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } + + throwOnInvalidObjectType(returnFiber, newChild); } - function popSuspenseListContext(fiber) { - pop(suspenseStackCursor, fiber); + + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + return placeSingleChild(reconcileSingleTextNode(returnFiber, currentFirstChild, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes)); } - // A non-null SuspenseState means that it is blocked for one reason or another. - // - A non-null dehydrated field means it's blocked pending hydration. - // - A non-null dehydrated field can use isSuspenseInstancePending or - // isSuspenseInstanceFallback to query the reason for being dehydrated. - // - A null dehydrated field means it's blocked by something suspending and - // we're currently showing a fallback instead. + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - function findFirstSuspended(row) { - var node = row; + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } // Remaining cases are all treated as empty. - while (node !== null) { - if (node.tag === SuspenseComponent) { - var state = node.memoizedState; - if (state !== null) { - var dehydrated = state.dehydrated; + return deleteRemainingChildren(returnFiber, currentFirstChild); + } - if ( - dehydrated === null || - isSuspenseInstancePending() || - isSuspenseInstanceFallback() - ) { - return node; - } - } - } else if ( - node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't - // keep track of whether it suspended or not. - node.memoizedProps.revealOrder !== undefined - ) { - var didSuspend = (node.flags & DidCapture) !== NoFlags$1; - - if (didSuspend) { - return node; - } - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + function reconcileChildFibers(returnFiber, currentFirstChild, newChild, lanes) { + // This indirection only exists so we can reset `thenableState` at the end. + // It should get inlined by Closure. + thenableIndexCounter$1 = 0; + var firstChildFiber = reconcileChildFibersImpl(returnFiber, currentFirstChild, newChild, lanes, null // debugInfo + ); + thenableState$1 = null; // Don't bother to reset `thenableIndexCounter` to 0 because it always gets + // set at the beginning. - if (node === row) { - return null; - } + return firstChildFiber; + } - while (node.sibling === null) { - if (node.return === null || node.return === row) { - return null; - } + return reconcileChildFibers; +} - node = node.return; - } +var reconcileChildFibers = createChildReconciler(true); +var mountChildFibers = createChildReconciler(false); +function resetChildReconcilerOnUnwind() { + // On unwind, clear any pending thenables that were used. + thenableState$1 = null; + thenableIndexCounter$1 = 0; +} +function cloneChildFibers(current, workInProgress) { + if (current !== null && workInProgress.child !== current.child) { + throw new Error('Resuming work not yet implemented.'); + } + + if (workInProgress.child === null) { + return; + } + + var currentChild = workInProgress.child; + var newChild = createWorkInProgress(currentChild, currentChild.pendingProps); + workInProgress.child = newChild; + newChild.return = workInProgress; + + while (currentChild.sibling !== null) { + currentChild = currentChild.sibling; + newChild = newChild.sibling = createWorkInProgress(currentChild, currentChild.pendingProps); + newChild.return = workInProgress; + } + + newChild.sibling = null; +} // Reset a workInProgress child set to prepare it for a second pass. + +function resetChildFibers(workInProgress, lanes) { + var child = workInProgress.child; + + while (child !== null) { + resetWorkInProgress(child, lanes); + child = child.sibling; + } +} - node.sibling.return = node.return; - node = node.sibling; - } +// TODO: This isn't being used yet, but it's intended to replace the +// InvisibleParentContext that is currently managed by SuspenseContext. - return null; - } +var currentTreeHiddenStackCursor = createCursor(null); +var prevEntangledRenderLanesCursor = createCursor(NoLanes); +function pushHiddenContext(fiber, context) { + var prevEntangledRenderLanes = getEntangledRenderLanes(); + push(prevEntangledRenderLanesCursor, prevEntangledRenderLanes, fiber); + push(currentTreeHiddenStackCursor, context, fiber); // When rendering a subtree that's currently hidden, we must include all + // lanes that would have rendered if the hidden subtree hadn't been deferred. + // That is, in order to reveal content from hidden -> visible, we must commit + // all the updates that we skipped when we originally hid the tree. + + setEntangledRenderLanes(mergeLanes(prevEntangledRenderLanes, context.baseLanes)); +} +function reuseHiddenContextOnStack(fiber) { + // This subtree is not currently hidden, so we don't need to add any lanes + // to the render lanes. But we still need to push something to avoid a + // context mismatch. Reuse the existing context on the stack. + push(prevEntangledRenderLanesCursor, getEntangledRenderLanes(), fiber); + push(currentTreeHiddenStackCursor, currentTreeHiddenStackCursor.current, fiber); +} +function popHiddenContext(fiber) { + // Restore the previous render lanes from the stack + setEntangledRenderLanes(prevEntangledRenderLanesCursor.current); + pop(currentTreeHiddenStackCursor, fiber); + pop(prevEntangledRenderLanesCursor, fiber); +} +function isCurrentTreeHidden() { + return currentTreeHiddenStackCursor.current !== null; +} - var NoFlags = - /* */ - 0; // Represents whether effect should fire. +// suspends, i.e. it's the nearest `catch` block on the stack. + +var suspenseHandlerStackCursor = createCursor(null); // Represents the outermost boundary that is not visible in the current tree. +// Everything above this is the "shell". When this is null, it means we're +// rendering in the shell of the app. If it's non-null, it means we're rendering +// deeper than the shell, inside a new tree that wasn't already visible. +// +// The main way we use this concept is to determine whether showing a fallback +// would result in a desirable or undesirable loading state. Activing a fallback +// in the shell is considered an undersirable loading state, because it would +// mean hiding visible (albeit stale) content in the current tree — we prefer to +// show the stale content, rather than switch to a fallback. But showing a +// fallback in a new tree is fine, because there's no stale content to +// prefer instead. + +var shellBoundary = null; +function getShellBoundary() { + return shellBoundary; +} +function pushPrimaryTreeSuspenseHandler(handler) { + // TODO: Pass as argument + var current = handler.alternate; + // propagated a single level. For example, when ForceSuspenseFallback is set, + // it should only force the nearest Suspense boundary into fallback mode. - var HasEffect = - /* */ - 1; // Represents the phase in which the effect (not the clean-up) fires. + pushSuspenseListContext(handler, setDefaultShallowSuspenseListContext(suspenseStackCursor.current)); // Experimental feature: Some Suspense boundaries are marked as having an + // to push a nested Suspense handler, because it will get replaced by the + // outer fallback, anyway. Consider this as a future optimization. - var Insertion = - /* */ - 2; - var Layout = - /* */ - 4; - var Passive = - /* */ - 8; - var didWarnAboutMismatchedHooksForComponent; - var didWarnUncachedGetSnapshot; - var didWarnAboutUseWrappedInTryCatch; - var didWarnAboutAsyncClientComponent; - var didWarnAboutUseFormState; + push(suspenseHandlerStackCursor, handler, handler); - { - didWarnAboutMismatchedHooksForComponent = new Set(); - didWarnAboutUseWrappedInTryCatch = new Set(); - didWarnAboutAsyncClientComponent = new Set(); - didWarnAboutUseFormState = new Set(); - } // The effect "instance" is a shared object that remains the same for the entire - // lifetime of an effect. In Rust terms, a RefCell. We use it to store the - // "destroy" function that is returned from an effect, because that is stateful. - // The field is `undefined` if the effect is unmounted, or if the effect ran - // but is not stateful. We don't explicitly track whether the effect is mounted - // or unmounted because that can be inferred by the hiddenness of the fiber in - // the tree, i.e. whether there is a hidden Offscreen fiber above it. - // - // It's unfortunate that this is stored on a separate object, because it adds - // more memory per effect instance, but it's conceptually sound. I think there's - // likely a better data structure we could use for effects; perhaps just one - // array of effect instances per fiber. But I think this is OK for now despite - // the additional memory and we can follow up with performance - // optimizations later. - // These are set right before calling the component. - - var renderLanes = NoLanes; // The work-in-progress fiber. I've named it differently to distinguish it from - // the work-in-progress hook. - - var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The - // current hook list is the list that belongs to the current fiber. The - // work-in-progress hook list is a new list that will be added to the - // work-in-progress fiber. - - var currentHook = null; - var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This - // does not get reset if we do another render pass; only when we're completely - // finished evaluating this component. This is an optimization so we know - // whether we need to clear render phase updates after a throw. - - var didScheduleRenderPhaseUpdate = false; // Where an update was scheduled only during the current render pass. This - // gets reset after each attempt. - // TODO: Maybe there's some way to consolidate this with - // `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`. - - var didScheduleRenderPhaseUpdateDuringThisPass = false; - var shouldDoubleInvokeUserFnsInHooksDEV = false; // Counts the number of useId hooks in this component. - - var thenableIndexCounter = 0; - var thenableState = null; // Used for ids that are generated completely client-side (i.e. not during - // hydration). This counter is global, so client ids are not stable across - // render attempts. - - var globalClientIdCounter = 0; - var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook - - var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders. - // The list stores the order of hooks used during the initial render (mount). - // Subsequent renders (updates) reference this list. - - var hookTypesDev = null; - var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore - // the dependencies for Hooks that need them (e.g. useEffect or useMemo). - // When true, such Hooks will always be "remounted". Only used during hot reload. - - var ignorePreviousDependencies = false; - - function mountHookTypesDev() { - { - var hookName = currentHookNameInDev; + if (shellBoundary === null) { + if (current === null || isCurrentTreeHidden()) { + // This boundary is not visible in the current UI. + shellBoundary = handler; + } else { + var prevState = current.memoizedState; - if (hookTypesDev === null) { - hookTypesDev = [hookName]; - } else { - hookTypesDev.push(hookName); - } + if (prevState !== null) { + // This boundary is showing a fallback in the current UI. + shellBoundary = handler; } } + } +} +function pushFallbackTreeSuspenseHandler(fiber) { + // We're about to render the fallback. If something in the fallback suspends, + // it's akin to throwing inside of a `catch` block. This boundary should not + // capture. Reuse the existing handler on the stack. + reuseSuspenseHandlerOnStack(fiber); +} +function pushOffscreenSuspenseHandler(fiber) { + if (fiber.tag === OffscreenComponent) { + // A SuspenseList context is only pushed here to avoid a push/pop mismatch. + // Reuse the current value on the stack. + // TODO: We can avoid needing to push here by by forking popSuspenseHandler + // into separate functions for Suspense and Offscreen. + pushSuspenseListContext(fiber, suspenseStackCursor.current); + push(suspenseHandlerStackCursor, fiber, fiber); + + if (shellBoundary !== null) ; else { + var current = fiber.alternate; - function updateHookTypesDev() { - { - var hookName = currentHookNameInDev; - - if (hookTypesDev !== null) { - hookTypesUpdateIndexDev++; + if (current !== null) { + var prevState = current.memoizedState; - if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) { - warnOnHookMismatchInDev(hookName); - } + if (prevState !== null) { + // This is the first boundary in the stack that's already showing + // a fallback. So everything outside is considered the shell. + shellBoundary = fiber; } } } + } else { + // This is a LegacyHidden component. + reuseSuspenseHandlerOnStack(fiber); + } +} +function reuseSuspenseHandlerOnStack(fiber) { + pushSuspenseListContext(fiber, suspenseStackCursor.current); + push(suspenseHandlerStackCursor, getSuspenseHandler(), fiber); +} +function getSuspenseHandler() { + return suspenseHandlerStackCursor.current; +} +function popSuspenseHandler(fiber) { + pop(suspenseHandlerStackCursor, fiber); + + if (shellBoundary === fiber) { + // Popping back into the shell. + shellBoundary = null; + } + + popSuspenseListContext(fiber); +} // SuspenseList context +// TODO: Move to a separate module? We may change the SuspenseList +// implementation to hide/show in the commit phase, anyway. + +var DefaultSuspenseContext = 0; +var SubtreeSuspenseContextMask = 1; // ForceSuspenseFallback can be used by SuspenseList to force newly added +// items into their fallback state during one of the render passes. + +var ForceSuspenseFallback = 2; +var suspenseStackCursor = createCursor(DefaultSuspenseContext); +function hasSuspenseListContext(parentContext, flag) { + return (parentContext & flag) !== 0; +} +function setDefaultShallowSuspenseListContext(parentContext) { + return parentContext & SubtreeSuspenseContextMask; +} +function setShallowSuspenseListContext(parentContext, shallowContext) { + return parentContext & SubtreeSuspenseContextMask | shallowContext; +} +function pushSuspenseListContext(fiber, newContext) { + push(suspenseStackCursor, newContext, fiber); +} +function popSuspenseListContext(fiber) { + pop(suspenseStackCursor, fiber); +} - function checkDepsAreArrayDev(deps) { - { - if (deps !== undefined && deps !== null && !isArray(deps)) { - // Verify deps, but only on mount to avoid extra checks. - // It's unlikely their type would change as usually you define them inline. - error( - "%s received a final argument that is not an array (instead, received `%s`). When " + - "specified, the final argument must be an array.", - currentHookNameInDev, - typeof deps - ); - } - } - } +// A non-null SuspenseState means that it is blocked for one reason or another. +// - A non-null dehydrated field means it's blocked pending hydration. +// - A non-null dehydrated field can use isSuspenseInstancePending or +// isSuspenseInstanceFallback to query the reason for being dehydrated. +// - A null dehydrated field means it's blocked by something suspending and +// we're currently showing a fallback instead. - function warnOnHookMismatchInDev(currentHookName) { - { - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); - - if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) { - didWarnAboutMismatchedHooksForComponent.add(componentName); - - if (hookTypesDev !== null) { - var table = ""; - var secondColumnStart = 30; - - for (var i = 0; i <= hookTypesUpdateIndexDev; i++) { - var oldHookName = hookTypesDev[i]; - var newHookName = - i === hookTypesUpdateIndexDev ? currentHookName : oldHookName; - var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up - // lol @ IE not supporting String#repeat - - while (row.length < secondColumnStart) { - row += " "; - } +function findFirstSuspended(row) { + var node = row; - row += newHookName + "\n"; - table += row; - } + while (node !== null) { + if (node.tag === SuspenseComponent) { + var state = node.memoizedState; - error( - "React has detected a change in the order of Hooks called by %s. " + - "This will lead to bugs and errors if not fixed. " + - "For more information, read the Rules of Hooks: https://react.dev/link/rules-of-hooks\n\n" + - " Previous render Next render\n" + - " ------------------------------------------------------\n" + - "%s" + - " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n", - componentName, - table - ); - } - } - } - } + if (state !== null) { + var dehydrated = state.dehydrated; - function warnOnUseFormStateInDev() { - { - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); - - if (!didWarnAboutUseFormState.has(componentName)) { - didWarnAboutUseFormState.add(componentName); - - error( - "ReactDOM.useFormState has been renamed to React.useActionState. " + - "Please update %s to use React.useActionState.", - componentName - ); + if (dehydrated === null || isSuspenseInstancePending() || isSuspenseInstanceFallback()) { + return node; } } - } + } else if (node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't + // keep track of whether it suspended or not. + node.memoizedProps.revealOrder !== undefined) { + var didSuspend = (node.flags & DidCapture) !== NoFlags$1; - function warnIfAsyncClientComponent(Component) { - { - // This dev-only check only works for detecting native async functions, - // not transpiled ones. There's also a prod check that we use to prevent - // async client components from crashing the app; the prod one works even - // for transpiled async functions. Neither mechanism is completely - // bulletproof but together they cover the most common cases. - var isAsyncFunction = // $FlowIgnore[method-unbinding] - Object.prototype.toString.call(Component) === - "[object AsyncFunction]"; - - if (isAsyncFunction) { - // Encountered an async Client Component. This is not yet supported. - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); - - if (!didWarnAboutAsyncClientComponent.has(componentName)) { - didWarnAboutAsyncClientComponent.add(componentName); - - error( - "async/await is not yet supported in Client Components, only " + - "Server Components. This error is often caused by accidentally " + - "adding `'use client'` to a module that was originally written " + - "for the server." - ); - } - } + if (didSuspend) { + return node; } + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; } - function throwInvalidHookError() { - throw new Error( - "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for" + - " one of the following reasons:\n" + - "1. You might have mismatching versions of React and the renderer (such as React DOM)\n" + - "2. You might be breaking the Rules of Hooks\n" + - "3. You might have more than one copy of React in the same app\n" + - "See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem." - ); + if (node === row) { + return null; } - function areHookInputsEqual(nextDeps, prevDeps) { - { - if (ignorePreviousDependencies) { - // Only true when this component is being hot reloaded. - return false; - } + while (node.sibling === null) { + if (node.return === null || node.return === row) { + return null; } - if (prevDeps === null) { - { - error( - "%s received a final argument during this render, but not during " + - "the previous render. Even though the final argument is optional, " + - "its type cannot change between renders.", - currentHookNameInDev - ); - } + node = node.return; + } - return false; - } + node.sibling.return = node.return; + node = node.sibling; + } - { - // Don't bother comparing lengths in prod because these arrays should be - // passed inline. - if (nextDeps.length !== prevDeps.length) { - error( - "The final argument passed to %s changed size between renders. The " + - "order and size of this array must remain constant.\n\n" + - "Previous: %s\n" + - "Incoming: %s", - currentHookNameInDev, - "[" + prevDeps.join(", ") + "]", - "[" + nextDeps.join(", ") + "]" - ); - } - } // $FlowFixMe[incompatible-use] found when upgrading Flow + return null; +} - for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (objectIs(nextDeps[i], prevDeps[i])) { - continue; - } +var NoFlags = +/* */ +0; // Represents whether effect should fire. + +var HasEffect = +/* */ +1; // Represents the phase in which the effect (not the clean-up) fires. + +var Insertion = +/* */ +2; +var Layout = +/* */ +4; +var Passive = +/* */ +8; + +var didWarnAboutMismatchedHooksForComponent; +var didWarnUncachedGetSnapshot; +var didWarnAboutUseWrappedInTryCatch; +var didWarnAboutAsyncClientComponent; +var didWarnAboutUseFormState; + +{ + didWarnAboutMismatchedHooksForComponent = new Set(); + didWarnAboutUseWrappedInTryCatch = new Set(); + didWarnAboutAsyncClientComponent = new Set(); + didWarnAboutUseFormState = new Set(); +} // The effect "instance" is a shared object that remains the same for the entire +// lifetime of an effect. In Rust terms, a RefCell. We use it to store the +// "destroy" function that is returned from an effect, because that is stateful. +// The field is `undefined` if the effect is unmounted, or if the effect ran +// but is not stateful. We don't explicitly track whether the effect is mounted +// or unmounted because that can be inferred by the hiddenness of the fiber in +// the tree, i.e. whether there is a hidden Offscreen fiber above it. +// +// It's unfortunate that this is stored on a separate object, because it adds +// more memory per effect instance, but it's conceptually sound. I think there's +// likely a better data structure we could use for effects; perhaps just one +// array of effect instances per fiber. But I think this is OK for now despite +// the additional memory and we can follow up with performance +// optimizations later. +// These are set right before calling the component. + + +var renderLanes = NoLanes; // The work-in-progress fiber. I've named it differently to distinguish it from +// the work-in-progress hook. + +var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The +// current hook list is the list that belongs to the current fiber. The +// work-in-progress hook list is a new list that will be added to the +// work-in-progress fiber. + +var currentHook = null; +var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This +// does not get reset if we do another render pass; only when we're completely +// finished evaluating this component. This is an optimization so we know +// whether we need to clear render phase updates after a throw. + +var didScheduleRenderPhaseUpdate = false; // Where an update was scheduled only during the current render pass. This +// gets reset after each attempt. +// TODO: Maybe there's some way to consolidate this with +// `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`. + +var didScheduleRenderPhaseUpdateDuringThisPass = false; +var shouldDoubleInvokeUserFnsInHooksDEV = false; // Counts the number of useId hooks in this component. + +var thenableIndexCounter = 0; +var thenableState = null; // Used for ids that are generated completely client-side (i.e. not during +// hydration). This counter is global, so client ids are not stable across +// render attempts. + +var globalClientIdCounter = 0; +var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook + +var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders. +// The list stores the order of hooks used during the initial render (mount). +// Subsequent renders (updates) reference this list. + +var hookTypesDev = null; +var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore +// the dependencies for Hooks that need them (e.g. useEffect or useMemo). +// When true, such Hooks will always be "remounted". Only used during hot reload. + +var ignorePreviousDependencies = false; + +function mountHookTypesDev() { + { + var hookName = currentHookNameInDev; + + if (hookTypesDev === null) { + hookTypesDev = [hookName]; + } else { + hookTypesDev.push(hookName); + } + } +} - return false; +function updateHookTypesDev() { + { + var hookName = currentHookNameInDev; + + if (hookTypesDev !== null) { + hookTypesUpdateIndexDev++; + + if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) { + warnOnHookMismatchInDev(hookName); } + } + } +} - return true; +function checkDepsAreArrayDev(deps) { + { + if (deps !== undefined && deps !== null && !isArray(deps)) { + // Verify deps, but only on mount to avoid extra checks. + // It's unlikely their type would change as usually you define them inline. + error('%s received a final argument that is not an array (instead, received `%s`). When ' + 'specified, the final argument must be an array.', currentHookNameInDev, typeof deps); } + } +} - function renderWithHooks( - current, - workInProgress, - Component, - props, - secondArg, - nextRenderLanes - ) { - renderLanes = nextRenderLanes; - currentlyRenderingFiber$1 = workInProgress; +function warnOnHookMismatchInDev(currentHookName) { + { + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - { - hookTypesDev = current !== null ? current._debugHookTypes : null; - hookTypesUpdateIndexDev = -1; // Used for hot reloading: + if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) { + didWarnAboutMismatchedHooksForComponent.add(componentName); - ignorePreviousDependencies = - current !== null && current.type !== workInProgress.type; - warnIfAsyncClientComponent(Component); - } + if (hookTypesDev !== null) { + var table = ''; + var secondColumnStart = 30; - workInProgress.memoizedState = null; - workInProgress.updateQueue = null; - workInProgress.lanes = NoLanes; // The following should have already been reset - // currentHook = null; - // workInProgressHook = null; - // didScheduleRenderPhaseUpdate = false; - // localIdCounter = 0; - // thenableIndexCounter = 0; - // thenableState = null; - // TODO Warn if no hooks are used at all during mount, then some are used during update. - // Currently we will identify the update render as a mount because memoizedState === null. - // This is tricky because it's valid for certain types of components (e.g. React.lazy) - // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used. - // Non-stateful hooks (e.g. context) don't get added to memoizedState, - // so memoizedState would be null during updates and mounts. + for (var i = 0; i <= hookTypesUpdateIndexDev; i++) { + var oldHookName = hookTypesDev[i]; + var newHookName = i === hookTypesUpdateIndexDev ? currentHookName : oldHookName; + var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up + // lol @ IE not supporting String#repeat - { - if (current !== null && current.memoizedState !== null) { - ReactSharedInternals.H = HooksDispatcherOnUpdateInDEV; - } else if (hookTypesDev !== null) { - // This dispatcher handles an edge case where a component is updating, - // but no stateful hooks have been used. - // We want to match the production code behavior (which will use HooksDispatcherOnMount), - // but with the extra DEV validation to ensure hooks ordering hasn't changed. - // This dispatcher does that. - ReactSharedInternals.H = HooksDispatcherOnMountWithHookTypesInDEV; - } else { - ReactSharedInternals.H = HooksDispatcherOnMountInDEV; - } - } // In Strict Mode, during development, user functions are double invoked to - // help detect side effects. The logic for how this is implemented for in - // hook components is a bit complex so let's break it down. - // - // We will invoke the entire component function twice. However, during the - // second invocation of the component, the hook state from the first - // invocation will be reused. That means things like `useMemo` functions won't - // run again, because the deps will match and the memoized result will - // be reused. - // - // We want memoized functions to run twice, too, so account for this, user - // functions are double invoked during the *first* invocation of the component - // function, and are *not* double invoked during the second incovation: - // - // - First execution of component function: user functions are double invoked - // - Second execution of component function (in Strict Mode, during - // development): user functions are not double invoked. - // - // This is intentional for a few reasons; most importantly, it's because of - // how `use` works when something suspends: it reuses the promise that was - // passed during the first attempt. This is itself a form of memoization. - // We need to be able to memoize the reactive inputs to the `use` call using - // a hook (i.e. `useMemo`), which means, the reactive inputs to `use` must - // come from the same component invocation as the output. - // - // There are plenty of tests to ensure this behavior is correct. + while (row.length < secondColumnStart) { + row += ' '; + } - var shouldDoubleRenderDEV = debugRenderPhaseSideEffectsForStrictMode; - shouldDoubleInvokeUserFnsInHooksDEV = shouldDoubleRenderDEV; - var children = Component(props, secondArg); - shouldDoubleInvokeUserFnsInHooksDEV = false; // Check if there was a render phase update + row += newHookName + '\n'; + table += row; + } - if (didScheduleRenderPhaseUpdateDuringThisPass) { - // Keep rendering until the component stabilizes (there are no more render - // phase updates). - children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); + error('React has detected a change in the order of Hooks called by %s. ' + 'This will lead to bugs and errors if not fixed. ' + 'For more information, read the Rules of Hooks: https://react.dev/link/rules-of-hooks\n\n' + ' Previous render Next render\n' + ' ------------------------------------------------------\n' + '%s' + ' ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n', componentName, table); } - - finishRenderingHooks(current, workInProgress); - return children; } + } +} - function finishRenderingHooks(current, workInProgress, Component) { - { - workInProgress._debugHookTypes = hookTypesDev; - } // We can assume the previous dispatcher is always this one, since we set it - // at the beginning of the render phase and there's no re-entrance. +function warnOnUseFormStateInDev() { + { + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - ReactSharedInternals.H = ContextOnlyDispatcher; // This check uses currentHook so that it works the same in DEV and prod bundles. - // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles. + if (!didWarnAboutUseFormState.has(componentName)) { + didWarnAboutUseFormState.add(componentName); - var didRenderTooFewHooks = - currentHook !== null && currentHook.next !== null; - renderLanes = NoLanes; - currentlyRenderingFiber$1 = null; - currentHook = null; - workInProgressHook = null; + error('ReactDOM.useFormState has been renamed to React.useActionState. ' + 'Please update %s to use React.useActionState.', componentName); + } + } +} - { - currentHookNameInDev = null; - hookTypesDev = null; - hookTypesUpdateIndexDev = -1; // Confirm that a static flag was not added or removed since the last - // render. If this fires, it suggests that we incorrectly reset the static - // flags in some other part of the codebase. This has happened before, for - // example, in the SuspenseList implementation. - - if ( - current !== null && - (current.flags & StaticMask) !== - (workInProgress.flags & StaticMask) && // Disable this warning in legacy mode, because legacy Suspense is weird - // and creates false positives. To make this work in legacy mode, we'd - // need to mark fibers that commit in an incomplete state, somehow. For - // now I'll disable the warning that most of the bugs that would trigger - // it are either exclusive to concurrent mode or exist in both. - (current.mode & ConcurrentMode) !== NoMode - ) { - error( - "Internal React error: Expected static flag was missing. Please " + - "notify the React team." - ); - } - } +function warnIfAsyncClientComponent(Component) { + { + // This dev-only check only works for detecting native async functions, + // not transpiled ones. There's also a prod check that we use to prevent + // async client components from crashing the app; the prod one works even + // for transpiled async functions. Neither mechanism is completely + // bulletproof but together they cover the most common cases. + var isAsyncFunction = // $FlowIgnore[method-unbinding] + Object.prototype.toString.call(Component) === '[object AsyncFunction]'; - didScheduleRenderPhaseUpdate = false; // This is reset by checkDidRenderIdHook - // localIdCounter = 0; + if (isAsyncFunction) { + // Encountered an async Client Component. This is not yet supported. + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - thenableIndexCounter = 0; - thenableState = null; + if (!didWarnAboutAsyncClientComponent.has(componentName)) { + didWarnAboutAsyncClientComponent.add(componentName); - if (didRenderTooFewHooks) { - throw new Error( - "Rendered fewer hooks than expected. This may be caused by an accidental " + - "early return statement." - ); + error('async/await is not yet supported in Client Components, only ' + 'Server Components. This error is often caused by accidentally ' + "adding `'use client'` to a module that was originally written " + 'for the server.'); } + } + } +} - { - if (checkIfUseWrappedInTryCatch()) { - var componentName = - getComponentNameFromFiber(workInProgress) || "Unknown"; - - if ( - !didWarnAboutUseWrappedInTryCatch.has(componentName) && // This warning also fires if you suspend with `use` inside an - // async component. Since we warn for that above, we'll silence this - // second warning by checking here. - !didWarnAboutAsyncClientComponent.has(componentName) - ) { - didWarnAboutUseWrappedInTryCatch.add(componentName); - - error( - "`use` was called from inside a try/catch block. This is not allowed " + - "and can lead to unexpected behavior. To handle errors triggered " + - "by `use`, wrap your component in a error boundary." - ); - } - } - } +function throwInvalidHookError() { + throw new Error('Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for' + ' one of the following reasons:\n' + '1. You might have mismatching versions of React and the renderer (such as React DOM)\n' + '2. You might be breaking the Rules of Hooks\n' + '3. You might have more than one copy of React in the same app\n' + 'See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem.'); +} + +function areHookInputsEqual(nextDeps, prevDeps) { + { + if (ignorePreviousDependencies) { + // Only true when this component is being hot reloaded. + return false; } + } - function replaySuspendedComponentWithHooks( - current, - workInProgress, - Component, - props, - secondArg - ) { - // This function is used to replay a component that previously suspended, - // after its data resolves. - // - // It's a simplified version of renderWithHooks, but it doesn't need to do - // most of the set up work because they weren't reset when we suspended; they - // only get reset when the component either completes (finishRenderingHooks) - // or unwinds (resetHooksOnUnwind). - { - hookTypesUpdateIndexDev = -1; // Used for hot reloading: + if (prevDeps === null) { + { + error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev); + } - ignorePreviousDependencies = - current !== null && current.type !== workInProgress.type; - } + return false; + } - var children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); - finishRenderingHooks(current, workInProgress); - return children; + { + // Don't bother comparing lengths in prod because these arrays should be + // passed inline. + if (nextDeps.length !== prevDeps.length) { + error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + prevDeps.join(', ') + "]", "[" + nextDeps.join(', ') + "]"); } + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function renderWithHooksAgain(workInProgress, Component, props, secondArg) { - // This is used to perform another render pass. It's used when setState is - // called during render, and for double invoking components in Strict Mode - // during development. - // - // The state from the previous pass is reused whenever possible. So, state - // updates that were already processed are not processed again, and memoized - // functions (`useMemo`) are not invoked again. - // - // Keep rendering in a loop for as long as render phase updates continue to - // be scheduled. Use a counter to prevent infinite loops. - currentlyRenderingFiber$1 = workInProgress; - var numberOfReRenders = 0; - var children; - do { - if (didScheduleRenderPhaseUpdateDuringThisPass) { - // It's possible that a use() value depended on a state that was updated in - // this rerender, so we need to watch for different thenables this time. - thenableState = null; - } + for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (objectIs(nextDeps[i], prevDeps[i])) { + continue; + } - thenableIndexCounter = 0; - didScheduleRenderPhaseUpdateDuringThisPass = false; + return false; + } - if (numberOfReRenders >= RE_RENDER_LIMIT) { - throw new Error( - "Too many re-renders. React limits the number of renders to prevent " + - "an infinite loop." - ); - } + return true; +} - numberOfReRenders += 1; +function renderWithHooks(current, workInProgress, Component, props, secondArg, nextRenderLanes) { + renderLanes = nextRenderLanes; + currentlyRenderingFiber$1 = workInProgress; + + { + hookTypesDev = current !== null ? current._debugHookTypes : null; + hookTypesUpdateIndexDev = -1; // Used for hot reloading: + + ignorePreviousDependencies = current !== null && current.type !== workInProgress.type; + warnIfAsyncClientComponent(Component); + } + + workInProgress.memoizedState = null; + workInProgress.updateQueue = null; + workInProgress.lanes = NoLanes; // The following should have already been reset + // currentHook = null; + // workInProgressHook = null; + // didScheduleRenderPhaseUpdate = false; + // localIdCounter = 0; + // thenableIndexCounter = 0; + // thenableState = null; + // TODO Warn if no hooks are used at all during mount, then some are used during update. + // Currently we will identify the update render as a mount because memoizedState === null. + // This is tricky because it's valid for certain types of components (e.g. React.lazy) + // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used. + // Non-stateful hooks (e.g. context) don't get added to memoizedState, + // so memoizedState would be null during updates and mounts. + + { + if (current !== null && current.memoizedState !== null) { + ReactSharedInternals.H = HooksDispatcherOnUpdateInDEV; + } else if (hookTypesDev !== null) { + // This dispatcher handles an edge case where a component is updating, + // but no stateful hooks have been used. + // We want to match the production code behavior (which will use HooksDispatcherOnMount), + // but with the extra DEV validation to ensure hooks ordering hasn't changed. + // This dispatcher does that. + ReactSharedInternals.H = HooksDispatcherOnMountWithHookTypesInDEV; + } else { + ReactSharedInternals.H = HooksDispatcherOnMountInDEV; + } + } // In Strict Mode, during development, user functions are double invoked to + // help detect side effects. The logic for how this is implemented for in + // hook components is a bit complex so let's break it down. + // + // We will invoke the entire component function twice. However, during the + // second invocation of the component, the hook state from the first + // invocation will be reused. That means things like `useMemo` functions won't + // run again, because the deps will match and the memoized result will + // be reused. + // + // We want memoized functions to run twice, too, so account for this, user + // functions are double invoked during the *first* invocation of the component + // function, and are *not* double invoked during the second incovation: + // + // - First execution of component function: user functions are double invoked + // - Second execution of component function (in Strict Mode, during + // development): user functions are not double invoked. + // + // This is intentional for a few reasons; most importantly, it's because of + // how `use` works when something suspends: it reuses the promise that was + // passed during the first attempt. This is itself a form of memoization. + // We need to be able to memoize the reactive inputs to the `use` call using + // a hook (i.e. `useMemo`), which means, the reactive inputs to `use` must + // come from the same component invocation as the output. + // + // There are plenty of tests to ensure this behavior is correct. + + + var shouldDoubleRenderDEV = debugRenderPhaseSideEffectsForStrictMode ; + shouldDoubleInvokeUserFnsInHooksDEV = shouldDoubleRenderDEV; + var children = Component(props, secondArg); + shouldDoubleInvokeUserFnsInHooksDEV = false; // Check if there was a render phase update + + if (didScheduleRenderPhaseUpdateDuringThisPass) { + // Keep rendering until the component stabilizes (there are no more render + // phase updates). + children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + } + + finishRenderingHooks(current, workInProgress); + return children; +} - { - // Even when hot reloading, allow dependencies to stabilize - // after first render to prevent infinite render phase updates. - ignorePreviousDependencies = false; - } // Start over from the beginning of the list +function finishRenderingHooks(current, workInProgress, Component) { + { + workInProgress._debugHookTypes = hookTypesDev; + } // We can assume the previous dispatcher is always this one, since we set it + // at the beginning of the render phase and there's no re-entrance. - currentHook = null; - workInProgressHook = null; - workInProgress.updateQueue = null; - { - // Also validate hook order for cascading updates. - hookTypesUpdateIndexDev = -1; - } + ReactSharedInternals.H = ContextOnlyDispatcher; // This check uses currentHook so that it works the same in DEV and prod bundles. + // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles. - ReactSharedInternals.H = HooksDispatcherOnRerenderInDEV; - children = Component(props, secondArg); - } while (didScheduleRenderPhaseUpdateDuringThisPass); + var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null; + renderLanes = NoLanes; + currentlyRenderingFiber$1 = null; + currentHook = null; + workInProgressHook = null; - return children; - } + { + currentHookNameInDev = null; + hookTypesDev = null; + hookTypesUpdateIndexDev = -1; // Confirm that a static flag was not added or removed since the last + // render. If this fires, it suggests that we incorrectly reset the static + // flags in some other part of the codebase. This has happened before, for + // example, in the SuspenseList implementation. - function renderTransitionAwareHostComponentWithHooks( - current, - workInProgress, - lanes - ) { - return renderWithHooks( - current, - workInProgress, - TransitionAwareHostComponent, - null, - null, - lanes - ); + if (current !== null && (current.flags & StaticMask) !== (workInProgress.flags & StaticMask) && ( // Disable this warning in legacy mode, because legacy Suspense is weird + // and creates false positives. To make this work in legacy mode, we'd + // need to mark fibers that commit in an incomplete state, somehow. For + // now I'll disable the warning that most of the bugs that would trigger + // it are either exclusive to concurrent mode or exist in both. + (current.mode & ConcurrentMode) !== NoMode)) { + error('Internal React error: Expected static flag was missing. Please ' + 'notify the React team.'); } - function TransitionAwareHostComponent() { - var dispatcher = ReactSharedInternals.H; + } - var _dispatcher$useState = dispatcher.useState(), - maybeThenable = _dispatcher$useState[0]; + didScheduleRenderPhaseUpdate = false; // This is reset by checkDidRenderIdHook + // localIdCounter = 0; - var nextState; + thenableIndexCounter = 0; + thenableState = null; - if (typeof maybeThenable.then === "function") { - var thenable = maybeThenable; - nextState = useThenable(thenable); - } else { - var status = maybeThenable; - nextState = status; - } // The "reset state" is an object. If it changes, that means something - // requested that we reset the form. + if (didRenderTooFewHooks) { + throw new Error('Rendered fewer hooks than expected. This may be caused by an accidental ' + 'early return statement.'); + } - var _dispatcher$useState2 = dispatcher.useState(), - nextResetState = _dispatcher$useState2[0]; + { + if (checkIfUseWrappedInTryCatch()) { + var componentName = getComponentNameFromFiber(workInProgress) || 'Unknown'; - var prevResetState = - currentHook !== null ? currentHook.memoizedState : null; + if (!didWarnAboutUseWrappedInTryCatch.has(componentName) && // This warning also fires if you suspend with `use` inside an + // async component. Since we warn for that above, we'll silence this + // second warning by checking here. + !didWarnAboutAsyncClientComponent.has(componentName)) { + didWarnAboutUseWrappedInTryCatch.add(componentName); - if (prevResetState !== nextResetState) { - // Schedule a form reset - currentlyRenderingFiber$1.flags |= FormReset; + error('`use` was called from inside a try/catch block. This is not allowed ' + 'and can lead to unexpected behavior. To handle errors triggered ' + 'by `use`, wrap your component in a error boundary.'); } - - return nextState; } - function bailoutHooks(current, workInProgress, lanes) { - workInProgress.updateQueue = current.updateQueue; // TODO: Don't need to reset the flags here, because they're reset in the - // complete phase (bubbleProperties). + } +} - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags &= ~( - MountPassiveDev | - MountLayoutDev | - Passive$1 | - Update - ); - } else { - workInProgress.flags &= ~(Passive$1 | Update); - } +function replaySuspendedComponentWithHooks(current, workInProgress, Component, props, secondArg) { + // This function is used to replay a component that previously suspended, + // after its data resolves. + // + // It's a simplified version of renderWithHooks, but it doesn't need to do + // most of the set up work because they weren't reset when we suspended; they + // only get reset when the component either completes (finishRenderingHooks) + // or unwinds (resetHooksOnUnwind). + { + hookTypesUpdateIndexDev = -1; // Used for hot reloading: + + ignorePreviousDependencies = current !== null && current.type !== workInProgress.type; + } + + var children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + finishRenderingHooks(current, workInProgress); + return children; +} - current.lanes = removeLanes(current.lanes, lanes); +function renderWithHooksAgain(workInProgress, Component, props, secondArg) { + // This is used to perform another render pass. It's used when setState is + // called during render, and for double invoking components in Strict Mode + // during development. + // + // The state from the previous pass is reused whenever possible. So, state + // updates that were already processed are not processed again, and memoized + // functions (`useMemo`) are not invoked again. + // + // Keep rendering in a loop for as long as render phase updates continue to + // be scheduled. Use a counter to prevent infinite loops. + currentlyRenderingFiber$1 = workInProgress; + var numberOfReRenders = 0; + var children; + + do { + if (didScheduleRenderPhaseUpdateDuringThisPass) { + // It's possible that a use() value depended on a state that was updated in + // this rerender, so we need to watch for different thenables this time. + thenableState = null; } - function resetHooksAfterThrow() { - // This is called immediaetly after a throw. It shouldn't reset the entire - // module state, because the work loop might decide to replay the component - // again without rewinding. - // - // It should only reset things like the current dispatcher, to prevent hooks - // from being called outside of a component. - currentlyRenderingFiber$1 = null; // We can assume the previous dispatcher is always this one, since we set it - // at the beginning of the render phase and there's no re-entrance. - - ReactSharedInternals.H = ContextOnlyDispatcher; - } - function resetHooksOnUnwind(workInProgress) { - if (didScheduleRenderPhaseUpdate) { - // There were render phase updates. These are only valid for this render - // phase, which we are now aborting. Remove the updates from the queues so - // they do not persist to the next render. Do not remove updates from hooks - // that weren't processed. - // - // Only reset the updates from the queue if it has a clone. If it does - // not have a clone, that means it wasn't processed, and the updates were - // scheduled before we entered the render phase. - var hook = workInProgress.memoizedState; - while (hook !== null) { - var queue = hook.queue; + thenableIndexCounter = 0; + didScheduleRenderPhaseUpdateDuringThisPass = false; - if (queue !== null) { - queue.pending = null; - } + if (numberOfReRenders >= RE_RENDER_LIMIT) { + throw new Error('Too many re-renders. React limits the number of renders to prevent ' + 'an infinite loop.'); + } - hook = hook.next; - } + numberOfReRenders += 1; - didScheduleRenderPhaseUpdate = false; - } + { + // Even when hot reloading, allow dependencies to stabilize + // after first render to prevent infinite render phase updates. + ignorePreviousDependencies = false; + } // Start over from the beginning of the list - renderLanes = NoLanes; - currentlyRenderingFiber$1 = null; - currentHook = null; - workInProgressHook = null; - { - hookTypesDev = null; - hookTypesUpdateIndexDev = -1; - currentHookNameInDev = null; - } + currentHook = null; + workInProgressHook = null; + workInProgress.updateQueue = null; - didScheduleRenderPhaseUpdateDuringThisPass = false; - thenableIndexCounter = 0; - thenableState = null; + { + // Also validate hook order for cascading updates. + hookTypesUpdateIndexDev = -1; } - function mountWorkInProgressHook() { - var hook = { - memoizedState: null, - baseState: null, - baseQueue: null, - queue: null, - next: null - }; + ReactSharedInternals.H = HooksDispatcherOnRerenderInDEV ; + children = Component(props, secondArg); + } while (didScheduleRenderPhaseUpdateDuringThisPass); - if (workInProgressHook === null) { - // This is the first hook in the list - currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook; - } else { - // Append to the end of the list - workInProgressHook = workInProgressHook.next = hook; - } + return children; +} - return workInProgressHook; - } +function renderTransitionAwareHostComponentWithHooks(current, workInProgress, lanes) { - function updateWorkInProgressHook() { - // This function is used both for updates and for re-renders triggered by a - // render phase update. It assumes there is either a current hook we can - // clone, or a work-in-progress hook from a previous render pass that we can - // use as a base. - var nextCurrentHook; + return renderWithHooks(current, workInProgress, TransitionAwareHostComponent, null, null, lanes); +} +function TransitionAwareHostComponent() { - if (currentHook === null) { - var current = currentlyRenderingFiber$1.alternate; + var dispatcher = ReactSharedInternals.H; - if (current !== null) { - nextCurrentHook = current.memoizedState; - } else { - nextCurrentHook = null; - } - } else { - nextCurrentHook = currentHook.next; - } + var _dispatcher$useState = dispatcher.useState(), + maybeThenable = _dispatcher$useState[0]; - var nextWorkInProgressHook; + var nextState; - if (workInProgressHook === null) { - nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState; - } else { - nextWorkInProgressHook = workInProgressHook.next; - } + if (typeof maybeThenable.then === 'function') { + var thenable = maybeThenable; + nextState = useThenable(thenable); + } else { + var status = maybeThenable; + nextState = status; + } // The "reset state" is an object. If it changes, that means something + // requested that we reset the form. - if (nextWorkInProgressHook !== null) { - // There's already a work-in-progress. Reuse it. - workInProgressHook = nextWorkInProgressHook; - nextWorkInProgressHook = workInProgressHook.next; - currentHook = nextCurrentHook; - } else { - // Clone from the current hook. - if (nextCurrentHook === null) { - var currentFiber = currentlyRenderingFiber$1.alternate; - - if (currentFiber === null) { - // This is the initial render. This branch is reached when the component - // suspends, resumes, then renders an additional hook. - // Should never be reached because we should switch to the mount dispatcher first. - throw new Error( - "Update hook called on initial render. This is likely a bug in React. Please file an issue." - ); - } else { - // This is an update. We should always have a current hook. - throw new Error( - "Rendered more hooks than during the previous render." - ); - } - } - currentHook = nextCurrentHook; - var newHook = { - memoizedState: currentHook.memoizedState, - baseState: currentHook.baseState, - baseQueue: currentHook.baseQueue, - queue: currentHook.queue, - next: null - }; + var _dispatcher$useState2 = dispatcher.useState(), + nextResetState = _dispatcher$useState2[0]; - if (workInProgressHook === null) { - // This is the first hook in the list. - currentlyRenderingFiber$1.memoizedState = workInProgressHook = - newHook; - } else { - // Append to the end of the list. - workInProgressHook = workInProgressHook.next = newHook; - } - } + var prevResetState = currentHook !== null ? currentHook.memoizedState : null; - return workInProgressHook; - } // NOTE: defining two versions of this function to avoid size impact when this feature is disabled. - // Previously this function was inlined, the additional `memoCache` property makes it not inlined. + if (prevResetState !== nextResetState) { + // Schedule a form reset + currentlyRenderingFiber$1.flags |= FormReset; + } - var createFunctionComponentUpdateQueue; + return nextState; +} +function bailoutHooks(current, workInProgress, lanes) { + workInProgress.updateQueue = current.updateQueue; // TODO: Don't need to reset the flags here, because they're reset in the + // complete phase (bubbleProperties). - { - createFunctionComponentUpdateQueue = function () { - return { - lastEffect: null, - events: null, - stores: null, - memoCache: null - }; - }; - } + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags &= ~(MountPassiveDev | MountLayoutDev | Passive$1 | Update); + } else { + workInProgress.flags &= ~(Passive$1 | Update); + } + + current.lanes = removeLanes(current.lanes, lanes); +} +function resetHooksAfterThrow() { + // This is called immediaetly after a throw. It shouldn't reset the entire + // module state, because the work loop might decide to replay the component + // again without rewinding. + // + // It should only reset things like the current dispatcher, to prevent hooks + // from being called outside of a component. + currentlyRenderingFiber$1 = null; // We can assume the previous dispatcher is always this one, since we set it + // at the beginning of the render phase and there's no re-entrance. + + ReactSharedInternals.H = ContextOnlyDispatcher; +} +function resetHooksOnUnwind(workInProgress) { + if (didScheduleRenderPhaseUpdate) { + // There were render phase updates. These are only valid for this render + // phase, which we are now aborting. Remove the updates from the queues so + // they do not persist to the next render. Do not remove updates from hooks + // that weren't processed. + // + // Only reset the updates from the queue if it has a clone. If it does + // not have a clone, that means it wasn't processed, and the updates were + // scheduled before we entered the render phase. + var hook = workInProgress.memoizedState; - function useThenable(thenable) { - // Track the position of the thenable within this fiber. - var index = thenableIndexCounter; - thenableIndexCounter += 1; + while (hook !== null) { + var queue = hook.queue; - if (thenableState === null) { - thenableState = createThenableState(); + if (queue !== null) { + queue.pending = null; } - var result = trackUsedThenable(thenableState, thenable, index); + hook = hook.next; + } - if ( - currentlyRenderingFiber$1.alternate === null && - (workInProgressHook === null - ? currentlyRenderingFiber$1.memoizedState === null - : workInProgressHook.next === null) - ) { - // Initial render, and either this is the first time the component is - // called, or there were no Hooks called after this use() the previous - // time (perhaps because it threw). Subsequent Hook calls should use the - // mount dispatcher. - { - ReactSharedInternals.H = HooksDispatcherOnMountInDEV; - } - } + didScheduleRenderPhaseUpdate = false; + } + + renderLanes = NoLanes; + currentlyRenderingFiber$1 = null; + currentHook = null; + workInProgressHook = null; + + { + hookTypesDev = null; + hookTypesUpdateIndexDev = -1; + currentHookNameInDev = null; + } + + didScheduleRenderPhaseUpdateDuringThisPass = false; + thenableIndexCounter = 0; + thenableState = null; +} + +function mountWorkInProgressHook() { + var hook = { + memoizedState: null, + baseState: null, + baseQueue: null, + queue: null, + next: null + }; + + if (workInProgressHook === null) { + // This is the first hook in the list + currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook; + } else { + // Append to the end of the list + workInProgressHook = workInProgressHook.next = hook; + } + + return workInProgressHook; +} - return result; +function updateWorkInProgressHook() { + // This function is used both for updates and for re-renders triggered by a + // render phase update. It assumes there is either a current hook we can + // clone, or a work-in-progress hook from a previous render pass that we can + // use as a base. + var nextCurrentHook; + + if (currentHook === null) { + var current = currentlyRenderingFiber$1.alternate; + + if (current !== null) { + nextCurrentHook = current.memoizedState; + } else { + nextCurrentHook = null; + } + } else { + nextCurrentHook = currentHook.next; + } + + var nextWorkInProgressHook; + + if (workInProgressHook === null) { + nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState; + } else { + nextWorkInProgressHook = workInProgressHook.next; + } + + if (nextWorkInProgressHook !== null) { + // There's already a work-in-progress. Reuse it. + workInProgressHook = nextWorkInProgressHook; + nextWorkInProgressHook = workInProgressHook.next; + currentHook = nextCurrentHook; + } else { + // Clone from the current hook. + if (nextCurrentHook === null) { + var currentFiber = currentlyRenderingFiber$1.alternate; + + if (currentFiber === null) { + // This is the initial render. This branch is reached when the component + // suspends, resumes, then renders an additional hook. + // Should never be reached because we should switch to the mount dispatcher first. + throw new Error('Update hook called on initial render. This is likely a bug in React. Please file an issue.'); + } else { + // This is an update. We should always have a current hook. + throw new Error('Rendered more hooks than during the previous render.'); + } } - function use(usable) { - if (usable !== null && typeof usable === "object") { - // $FlowFixMe[method-unbinding] - if (typeof usable.then === "function") { - // This is a thenable. - var thenable = usable; - return useThenable(thenable); - } else if (usable.$$typeof === REACT_CONTEXT_TYPE) { - var context = usable; - return readContext(context); - } - } // eslint-disable-next-line react-internal/safe-string-coercion + currentHook = nextCurrentHook; + var newHook = { + memoizedState: currentHook.memoizedState, + baseState: currentHook.baseState, + baseQueue: currentHook.baseQueue, + queue: currentHook.queue, + next: null + }; - throw new Error( - "An unsupported type was passed to use(): " + String(usable) - ); + if (workInProgressHook === null) { + // This is the first hook in the list. + currentlyRenderingFiber$1.memoizedState = workInProgressHook = newHook; + } else { + // Append to the end of the list. + workInProgressHook = workInProgressHook.next = newHook; } + } - function useMemoCache(size) { - var memoCache = null; // Fast-path, load memo cache from wip fiber if already prepared + return workInProgressHook; +} // NOTE: defining two versions of this function to avoid size impact when this feature is disabled. +// Previously this function was inlined, the additional `memoCache` property makes it not inlined. - var updateQueue = currentlyRenderingFiber$1.updateQueue; - if (updateQueue !== null) { - memoCache = updateQueue.memoCache; - } // Otherwise clone from the current fiber +var createFunctionComponentUpdateQueue; - if (memoCache == null) { - var current = currentlyRenderingFiber$1.alternate; +{ + createFunctionComponentUpdateQueue = function () { + return { + lastEffect: null, + events: null, + stores: null, + memoCache: null + }; + }; +} - if (current !== null) { - var currentUpdateQueue = current.updateQueue; +function useThenable(thenable) { + // Track the position of the thenable within this fiber. + var index = thenableIndexCounter; + thenableIndexCounter += 1; - if (currentUpdateQueue !== null) { - var currentMemoCache = currentUpdateQueue.memoCache; + if (thenableState === null) { + thenableState = createThenableState(); + } - if (currentMemoCache != null) { - memoCache = { - data: currentMemoCache.data.map(function (array) { - return array.slice(); - }), - index: 0 - }; - } - } - } - } // Finally fall back to allocating a fresh instance of the cache + var result = trackUsedThenable(thenableState, thenable, index); - if (memoCache == null) { - memoCache = { - data: [], - index: 0 - }; - } + if (currentlyRenderingFiber$1.alternate === null && (workInProgressHook === null ? currentlyRenderingFiber$1.memoizedState === null : workInProgressHook.next === null)) { + // Initial render, and either this is the first time the component is + // called, or there were no Hooks called after this use() the previous + // time (perhaps because it threw). Subsequent Hook calls should use the + // mount dispatcher. + { + ReactSharedInternals.H = HooksDispatcherOnMountInDEV; + } + } - if (updateQueue === null) { - updateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = updateQueue; - } + return result; +} - updateQueue.memoCache = memoCache; - var data = memoCache.data[memoCache.index]; +function use(usable) { + if (usable !== null && typeof usable === 'object') { + // $FlowFixMe[method-unbinding] + if (typeof usable.then === 'function') { + // This is a thenable. + var thenable = usable; + return useThenable(thenable); + } else if (usable.$$typeof === REACT_CONTEXT_TYPE) { + var context = usable; + return readContext(context); + } + } // eslint-disable-next-line react-internal/safe-string-coercion - if (data === undefined) { - data = memoCache.data[memoCache.index] = new Array(size); - for (var i = 0; i < size; i++) { - data[i] = REACT_MEMO_CACHE_SENTINEL; - } - } else if (data.length !== size) { - // TODO: consider warning or throwing here - { - error( - "Expected a constant size argument for each invocation of useMemoCache. " + - "The previous cache was allocated with size %s but size %s was requested.", - data.length, - size - ); - } - } + throw new Error('An unsupported type was passed to use(): ' + String(usable)); +} - memoCache.index++; - return data; - } +function useMemoCache(size) { + var memoCache = null; // Fast-path, load memo cache from wip fiber if already prepared - function basicStateReducer(state, action) { - // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - return typeof action === "function" ? action(state) : action; - } + var updateQueue = currentlyRenderingFiber$1.updateQueue; - function mountReducer(reducer, initialArg, init) { - var hook = mountWorkInProgressHook(); - var initialState; + if (updateQueue !== null) { + memoCache = updateQueue.memoCache; + } // Otherwise clone from the current fiber - if (init !== undefined) { - initialState = init(initialArg); - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - init(initialArg); - setIsStrictModeForDevtools(false); + if (memoCache == null) { + var current = currentlyRenderingFiber$1.alternate; + + if (current !== null) { + var currentUpdateQueue = current.updateQueue; + + if (currentUpdateQueue !== null) { + var currentMemoCache = currentUpdateQueue.memoCache; + + if (currentMemoCache != null) { + memoCache = { + data: currentMemoCache.data.map(function (array) { + return array.slice(); + }), + index: 0 + }; } - } else { - initialState = initialArg; } - - hook.memoizedState = hook.baseState = initialState; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: reducer, - lastRenderedState: initialState - }; - hook.queue = queue; - var dispatch = (queue.dispatch = dispatchReducerAction.bind( - null, - currentlyRenderingFiber$1, - queue - )); - return [hook.memoizedState, dispatch]; } + } // Finally fall back to allocating a fresh instance of the cache + + + if (memoCache == null) { + memoCache = { + data: [], + index: 0 + }; + } + + if (updateQueue === null) { + updateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = updateQueue; + } - function updateReducer(reducer, initialArg, init) { - var hook = updateWorkInProgressHook(); - return updateReducerImpl(hook, currentHook, reducer); + updateQueue.memoCache = memoCache; + var data = memoCache.data[memoCache.index]; + + if (data === undefined) { + data = memoCache.data[memoCache.index] = new Array(size); + + for (var i = 0; i < size; i++) { + data[i] = REACT_MEMO_CACHE_SENTINEL; + } + } else if (data.length !== size) { + // TODO: consider warning or throwing here + { + error('Expected a constant size argument for each invocation of useMemoCache. ' + 'The previous cache was allocated with size %s but size %s was requested.', data.length, size); } + } - function updateReducerImpl(hook, current, reducer) { - var queue = hook.queue; + memoCache.index++; + return data; +} - if (queue === null) { - throw new Error( - "Should have a queue. This is likely a bug in React. Please file an issue." - ); - } +function basicStateReducer(state, action) { + // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + return typeof action === 'function' ? action(state) : action; +} - queue.lastRenderedReducer = reducer; // The last rebase update that is NOT part of the base state. +function mountReducer(reducer, initialArg, init) { + var hook = mountWorkInProgressHook(); + var initialState; + + if (init !== undefined) { + initialState = init(initialArg); + + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + init(initialArg); + setIsStrictModeForDevtools(false); + } + } else { + initialState = initialArg; + } + + hook.memoizedState = hook.baseState = initialState; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: reducer, + lastRenderedState: initialState + }; + hook.queue = queue; + var dispatch = queue.dispatch = dispatchReducerAction.bind(null, currentlyRenderingFiber$1, queue); + return [hook.memoizedState, dispatch]; +} - var baseQueue = hook.baseQueue; // The last pending update that hasn't been processed yet. +function updateReducer(reducer, initialArg, init) { + var hook = updateWorkInProgressHook(); + return updateReducerImpl(hook, currentHook, reducer); +} - var pendingQueue = queue.pending; +function updateReducerImpl(hook, current, reducer) { + var queue = hook.queue; - if (pendingQueue !== null) { - // We have new updates that haven't been processed yet. - // We'll add them to the base queue. - if (baseQueue !== null) { - // Merge the pending queue and the base queue. - var baseFirst = baseQueue.next; - var pendingFirst = pendingQueue.next; - baseQueue.next = pendingFirst; - pendingQueue.next = baseFirst; - } + if (queue === null) { + throw new Error('Should have a queue. This is likely a bug in React. Please file an issue.'); + } - { - if (current.baseQueue !== baseQueue) { - // Internal invariant that should never happen, but feasibly could in - // the future if we implement resuming, or some form of that. - error( - "Internal error: Expected work-in-progress queue to be a clone. " + - "This is a bug in React." - ); - } - } + queue.lastRenderedReducer = reducer; // The last rebase update that is NOT part of the base state. - current.baseQueue = baseQueue = pendingQueue; - queue.pending = null; - } + var baseQueue = hook.baseQueue; // The last pending update that hasn't been processed yet. + + var pendingQueue = queue.pending; + + if (pendingQueue !== null) { + // We have new updates that haven't been processed yet. + // We'll add them to the base queue. + if (baseQueue !== null) { + // Merge the pending queue and the base queue. + var baseFirst = baseQueue.next; + var pendingFirst = pendingQueue.next; + baseQueue.next = pendingFirst; + pendingQueue.next = baseFirst; + } + + { + if (current.baseQueue !== baseQueue) { + // Internal invariant that should never happen, but feasibly could in + // the future if we implement resuming, or some form of that. + error('Internal error: Expected work-in-progress queue to be a clone. ' + 'This is a bug in React.'); + } + } + + current.baseQueue = baseQueue = pendingQueue; + queue.pending = null; + } + + var baseState = hook.baseState; + + if (baseQueue === null) { + // If there are no pending updates, then the memoized state should be the + // same as the base state. Currently these only diverge in the case of + // useOptimistic, because useOptimistic accepts a new baseState on + // every render. + hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because + // baseState is derived from other reactive values. + } else { + // We have a queue to process. + var first = baseQueue.next; + var newState = baseState; + var newBaseState = null; + var newBaseQueueFirst = null; + var newBaseQueueLast = null; + var update = first; + var didReadFromEntangledAsyncAction = false; + + do { + // An extra OffscreenLane bit is added to updates that were made to + // a hidden tree, so that we can distinguish them from updates that were + // already there when the tree was hidden. + var updateLane = removeLanes(update.lane, OffscreenLane); + var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then + // it's not a "base" update and we should disregard the extra base lanes + // that were added to renderLanes when we entered the Offscreen tree. + + var shouldSkipUpdate = isHiddenUpdate ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) : !isSubsetOfLanes(renderLanes, updateLane); + + if (shouldSkipUpdate) { + // Priority is insufficient. Skip this update. If this is the first + // skipped update, the previous update/state is the new base + // update/state. + var clone = { + lane: updateLane, + revertLane: update.revertLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; + + if (newBaseQueueLast === null) { + newBaseQueueFirst = newBaseQueueLast = clone; + newBaseState = newState; + } else { + newBaseQueueLast = newBaseQueueLast.next = clone; + } // Update the remaining priority in the queue. + // TODO: Don't need to accumulate this. Instead, we can remove + // renderLanes from the original lanes. - var baseState = hook.baseState; - if (baseQueue === null) { - // If there are no pending updates, then the memoized state should be the - // same as the base state. Currently these only diverge in the case of - // useOptimistic, because useOptimistic accepts a new baseState on - // every render. - hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because - // baseState is derived from other reactive values. + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, updateLane); + markSkippedUpdateLanes(updateLane); } else { - // We have a queue to process. - var first = baseQueue.next; - var newState = baseState; - var newBaseState = null; - var newBaseQueueFirst = null; - var newBaseQueueLast = null; - var update = first; - var didReadFromEntangledAsyncAction = false; + // This update does have sufficient priority. + // Check if this is an optimistic update. + var revertLane = update.revertLane; + + if (revertLane === NoLane) { + // This is not an optimistic update, and we're going to apply it now. + // But, if there were earlier updates that were skipped, we need to + // leave this update in the queue so it can be rebased later. + if (newBaseQueueLast !== null) { + var _clone = { + // This update is going to be committed so we never want uncommit + // it. Using NoLane works because 0 is a subset of all bitmasks, so + // this will never be skipped by the check above. + lane: NoLane, + revertLane: NoLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; + newBaseQueueLast = newBaseQueueLast.next = _clone; + } // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. - do { - // An extra OffscreenLane bit is added to updates that were made to - // a hidden tree, so that we can distinguish them from updates that were - // already there when the tree was hidden. - var updateLane = removeLanes(update.lane, OffscreenLane); - var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then - // it's not a "base" update and we should disregard the extra base lanes - // that were added to renderLanes when we entered the Offscreen tree. - - var shouldSkipUpdate = isHiddenUpdate - ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) - : !isSubsetOfLanes(renderLanes, updateLane); - - if (shouldSkipUpdate) { - // Priority is insufficient. Skip this update. If this is the first - // skipped update, the previous update/state is the new base - // update/state. - var clone = { - lane: updateLane, + + if (updateLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } + } else { + // This is an optimistic update. If the "revert" priority is + // sufficient, don't apply the update. Otherwise, apply the update, + // but leave it in the queue so it can be either reverted or + // rebased in a subsequent render. + if (isSubsetOfLanes(renderLanes, revertLane)) { + // The transition that this optimistic update is associated with + // has finished. Pretend the update doesn't exist by skipping + // over it. + update = update.next; // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. + + if (revertLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } + + continue; + } else { + var _clone2 = { + // Once we commit an optimistic update, we shouldn't uncommit it + // until the transition it is associated with has finished + // (represented by revertLane). Using NoLane here works because 0 + // is a subset of all bitmasks, so this will never be skipped by + // the check above. + lane: NoLane, + // Reuse the same revertLane so we know when the transition + // has finished. revertLane: update.revertLane, action: update.action, hasEagerState: update.hasEagerState, @@ -8786,10831 +7744,8767 @@ if (__DEV__) { }; if (newBaseQueueLast === null) { - newBaseQueueFirst = newBaseQueueLast = clone; + newBaseQueueFirst = newBaseQueueLast = _clone2; newBaseState = newState; } else { - newBaseQueueLast = newBaseQueueLast.next = clone; + newBaseQueueLast = newBaseQueueLast.next = _clone2; } // Update the remaining priority in the queue. // TODO: Don't need to accumulate this. Instead, we can remove // renderLanes from the original lanes. - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - updateLane - ); - markSkippedUpdateLanes(updateLane); - } else { - // This update does have sufficient priority. - // Check if this is an optimistic update. - var revertLane = update.revertLane; - - if (revertLane === NoLane) { - // This is not an optimistic update, and we're going to apply it now. - // But, if there were earlier updates that were skipped, we need to - // leave this update in the queue so it can be rebased later. - if (newBaseQueueLast !== null) { - var _clone = { - // This update is going to be committed so we never want uncommit - // it. Using NoLane works because 0 is a subset of all bitmasks, so - // this will never be skipped by the check above. - lane: NoLane, - revertLane: NoLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; - newBaseQueueLast = newBaseQueueLast.next = _clone; - } // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - - if (updateLane === peekEntangledActionLane()) { - didReadFromEntangledAsyncAction = true; - } - } else { - // This is an optimistic update. If the "revert" priority is - // sufficient, don't apply the update. Otherwise, apply the update, - // but leave it in the queue so it can be either reverted or - // rebased in a subsequent render. - if (isSubsetOfLanes(renderLanes, revertLane)) { - // The transition that this optimistic update is associated with - // has finished. Pretend the update doesn't exist by skipping - // over it. - update = update.next; // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - - if (revertLane === peekEntangledActionLane()) { - didReadFromEntangledAsyncAction = true; - } - - continue; - } else { - var _clone2 = { - // Once we commit an optimistic update, we shouldn't uncommit it - // until the transition it is associated with has finished - // (represented by revertLane). Using NoLane here works because 0 - // is a subset of all bitmasks, so this will never be skipped by - // the check above. - lane: NoLane, - // Reuse the same revertLane so we know when the transition - // has finished. - revertLane: update.revertLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; - - if (newBaseQueueLast === null) { - newBaseQueueFirst = newBaseQueueLast = _clone2; - newBaseState = newState; - } else { - newBaseQueueLast = newBaseQueueLast.next = _clone2; - } // Update the remaining priority in the queue. - // TODO: Don't need to accumulate this. Instead, we can remove - // renderLanes from the original lanes. - - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - revertLane - ); - markSkippedUpdateLanes(revertLane); - } - } // Process this update. - var action = update.action; + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, revertLane); + markSkippedUpdateLanes(revertLane); + } + } // Process this update. - if (shouldDoubleInvokeUserFnsInHooksDEV) { - reducer(newState, action); - } - if (update.hasEagerState) { - // If this update is a state update (not a reducer) and was processed eagerly, - // we can use the eagerly computed state - newState = update.eagerState; - } else { - newState = reducer(newState, action); - } - } + var action = update.action; - update = update.next; - } while (update !== null && update !== first); + if (shouldDoubleInvokeUserFnsInHooksDEV) { + reducer(newState, action); + } - if (newBaseQueueLast === null) { - newBaseState = newState; + if (update.hasEagerState) { + // If this update is a state update (not a reducer) and was processed eagerly, + // we can use the eagerly computed state + newState = update.eagerState; } else { - newBaseQueueLast.next = newBaseQueueFirst; - } // Mark that the fiber performed work, but only if the new state is - // different from the current state. - - if (!objectIs(newState, hook.memoizedState)) { - markWorkInProgressReceivedUpdate(); // Check if this update is part of a pending async action. If so, we'll - // need to suspend until the action has finished, so that it's batched - // together with future updates in the same action. - // TODO: Once we support hooks inside useMemo (or an equivalent - // memoization boundary like Forget), hoist this logic so that it only - // suspends if the memo boundary produces a new value. - - if (didReadFromEntangledAsyncAction) { - var entangledActionThenable = peekEntangledActionThenable(); - - if (entangledActionThenable !== null) { - // TODO: Instead of the throwing the thenable directly, throw a - // special object like `use` does so we can detect if it's captured - // by userspace. - throw entangledActionThenable; - } - } + newState = reducer(newState, action); } - - hook.memoizedState = newState; - hook.baseState = newBaseState; - hook.baseQueue = newBaseQueueLast; - queue.lastRenderedState = newState; - } - - if (baseQueue === null) { - // `queue.lanes` is used for entangling transitions. We can set it back to - // zero once the queue is empty. - queue.lanes = NoLanes; - } - - var dispatch = queue.dispatch; - return [hook.memoizedState, dispatch]; - } - - function rerenderReducer(reducer, initialArg, init) { - var hook = updateWorkInProgressHook(); - var queue = hook.queue; - - if (queue === null) { - throw new Error( - "Should have a queue. This is likely a bug in React. Please file an issue." - ); } - queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous - // work-in-progress hook. - - var dispatch = queue.dispatch; - var lastRenderPhaseUpdate = queue.pending; - var newState = hook.memoizedState; + update = update.next; + } while (update !== null && update !== first); - if (lastRenderPhaseUpdate !== null) { - // The queue doesn't persist past this render pass. - queue.pending = null; - var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next; - var update = firstRenderPhaseUpdate; + if (newBaseQueueLast === null) { + newBaseState = newState; + } else { + newBaseQueueLast.next = newBaseQueueFirst; + } // Mark that the fiber performed work, but only if the new state is + // different from the current state. - do { - // Process this render phase update. We don't have to check the - // priority because it will always be the same as the current - // render's. - var action = update.action; - newState = reducer(newState, action); - update = update.next; - } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is - // different from the current state. - if (!objectIs(newState, hook.memoizedState)) { - markWorkInProgressReceivedUpdate(); - } + if (!objectIs(newState, hook.memoizedState)) { + markWorkInProgressReceivedUpdate(); // Check if this update is part of a pending async action. If so, we'll + // need to suspend until the action has finished, so that it's batched + // together with future updates in the same action. + // TODO: Once we support hooks inside useMemo (or an equivalent + // memoization boundary like Forget), hoist this logic so that it only + // suspends if the memo boundary produces a new value. - hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to - // the base state unless the queue is empty. - // TODO: Not sure if this is the desired semantics, but it's what we - // do for gDSFP. I can't remember why. + if (didReadFromEntangledAsyncAction) { + var entangledActionThenable = peekEntangledActionThenable(); - if (hook.baseQueue === null) { - hook.baseState = newState; + if (entangledActionThenable !== null) { + // TODO: Instead of the throwing the thenable directly, throw a + // special object like `use` does so we can detect if it's captured + // by userspace. + throw entangledActionThenable; } - - queue.lastRenderedState = newState; } - - return [newState, dispatch]; } - function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { - var fiber = currentlyRenderingFiber$1; - var hook = mountWorkInProgressHook(); - var nextSnapshot; - - { - nextSnapshot = getSnapshot(); + hook.memoizedState = newState; + hook.baseState = newBaseState; + hook.baseQueue = newBaseQueueLast; + queue.lastRenderedState = newState; + } - { - if (!didWarnUncachedGetSnapshot) { - var cachedSnapshot = getSnapshot(); + if (baseQueue === null) { + // `queue.lanes` is used for entangling transitions. We can set it back to + // zero once the queue is empty. + queue.lanes = NoLanes; + } - if (!objectIs(nextSnapshot, cachedSnapshot)) { - error( - "The result of getSnapshot should be cached to avoid an infinite loop" - ); + var dispatch = queue.dispatch; + return [hook.memoizedState, dispatch]; +} - didWarnUncachedGetSnapshot = true; - } - } - } // Unless we're rendering a blocking lane, schedule a consistency check. - // Right before committing, we will walk the tree and check if any of the - // stores were mutated. - // - // We won't do this if we're hydrating server-rendered content, because if - // the content is stale, it's already visible anyway. Instead we'll patch - // it up in a passive effect. +function rerenderReducer(reducer, initialArg, init) { + var hook = updateWorkInProgressHook(); + var queue = hook.queue; - var root = getWorkInProgressRoot(); + if (queue === null) { + throw new Error('Should have a queue. This is likely a bug in React. Please file an issue.'); + } - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } + queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous + // work-in-progress hook. - var rootRenderLanes = getWorkInProgressRootRenderLanes(); + var dispatch = queue.dispatch; + var lastRenderPhaseUpdate = queue.pending; + var newState = hook.memoizedState; - if (!includesBlockingLane(root, rootRenderLanes)) { - pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); - } - } // Read the current snapshot from the store on every render. This breaks the - // normal rules of React, and only works because store updates are - // always synchronous. - - hook.memoizedState = nextSnapshot; - var inst = { - value: nextSnapshot, - getSnapshot: getSnapshot - }; - hook.queue = inst; // Schedule an effect to subscribe to the store. - - mountEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [ - subscribe - ]); // Schedule an effect to update the mutable instance fields. We will update - // this whenever subscribe, getSnapshot, or value changes. Because there's no - // clean-up function, and we track the deps correctly, we can call pushEffect - // directly, without storing any additional state. For the same reason, we - // don't need to set a static flag, either. - - fiber.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), - createEffectInstance(), - null - ); - return nextSnapshot; - } - - function updateSyncExternalStore( - subscribe, - getSnapshot, - getServerSnapshot - ) { - var fiber = currentlyRenderingFiber$1; - var hook = updateWorkInProgressHook(); // Read the current snapshot from the store on every render. This breaks the - // normal rules of React, and only works because store updates are - // always synchronous. - - var nextSnapshot; + if (lastRenderPhaseUpdate !== null) { + // The queue doesn't persist past this render pass. + queue.pending = null; + var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next; + var update = firstRenderPhaseUpdate; - { - nextSnapshot = getSnapshot(); + do { + // Process this render phase update. We don't have to check the + // priority because it will always be the same as the current + // render's. + var action = update.action; + newState = reducer(newState, action); + update = update.next; + } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is + // different from the current state. - { - if (!didWarnUncachedGetSnapshot) { - var cachedSnapshot = getSnapshot(); - if (!objectIs(nextSnapshot, cachedSnapshot)) { - error( - "The result of getSnapshot should be cached to avoid an infinite loop" - ); + if (!objectIs(newState, hook.memoizedState)) { + markWorkInProgressReceivedUpdate(); + } - didWarnUncachedGetSnapshot = true; - } - } - } - } + hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to + // the base state unless the queue is empty. + // TODO: Not sure if this is the desired semantics, but it's what we + // do for gDSFP. I can't remember why. - var prevSnapshot = (currentHook || hook).memoizedState; - var snapshotChanged = !objectIs(prevSnapshot, nextSnapshot); + if (hook.baseQueue === null) { + hook.baseState = newState; + } - if (snapshotChanged) { - hook.memoizedState = nextSnapshot; - markWorkInProgressReceivedUpdate(); - } + queue.lastRenderedState = newState; + } - var inst = hook.queue; - updateEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [ - subscribe - ]); // Whenever getSnapshot or subscribe changes, we need to check in the - // commit phase if there was an interleaved mutation. In concurrent mode - // this can happen all the time, but even in synchronous mode, an earlier - // effect may have mutated the store. - - if ( - inst.getSnapshot !== getSnapshot || - snapshotChanged || // Check if the subscribe function changed. We can save some memory by - // checking whether we scheduled a subscription effect above. - (workInProgressHook !== null && - workInProgressHook.memoizedState.tag & HasEffect) - ) { - fiber.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - updateStoreInstance.bind( - null, - fiber, - inst, - nextSnapshot, - getSnapshot - ), - createEffectInstance(), - null - ); // Unless we're rendering a blocking lane, schedule a consistency check. - // Right before committing, we will walk the tree and check if any of the - // stores were mutated. - - var root = getWorkInProgressRoot(); - - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } + return [newState, dispatch]; +} - if (!includesBlockingLane(root, renderLanes)) { - pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); - } - } +function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { + var fiber = currentlyRenderingFiber$1; + var hook = mountWorkInProgressHook(); + var nextSnapshot; - return nextSnapshot; - } + { + nextSnapshot = getSnapshot(); - function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) { - fiber.flags |= StoreConsistency; - var check = { - getSnapshot: getSnapshot, - value: renderedSnapshot - }; - var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + { + if (!didWarnUncachedGetSnapshot) { + var cachedSnapshot = getSnapshot(); - if (componentUpdateQueue === null) { - componentUpdateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; - componentUpdateQueue.stores = [check]; - } else { - var stores = componentUpdateQueue.stores; + if (!objectIs(nextSnapshot, cachedSnapshot)) { + error('The result of getSnapshot should be cached to avoid an infinite loop'); - if (stores === null) { - componentUpdateQueue.stores = [check]; - } else { - stores.push(check); + didWarnUncachedGetSnapshot = true; } } - } + } // Unless we're rendering a blocking lane, schedule a consistency check. + // Right before committing, we will walk the tree and check if any of the + // stores were mutated. + // + // We won't do this if we're hydrating server-rendered content, because if + // the content is stale, it's already visible anyway. Instead we'll patch + // it up in a passive effect. - function updateStoreInstance(fiber, inst, nextSnapshot, getSnapshot) { - // These are updated in the passive phase - inst.value = nextSnapshot; - inst.getSnapshot = getSnapshot; // Something may have been mutated in between render and commit. This could - // have been in an event that fired before the passive effects, or it could - // have been in a layout effect. In that case, we would have used the old - // snapsho and getSnapshot values to bail out. We need to check one more time. - if (checkIfSnapshotChanged(inst)) { - // Force a re-render. - forceStoreRerender(fiber); - } + var root = getWorkInProgressRoot(); + + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } - function subscribeToStore(fiber, inst, subscribe) { - var handleStoreChange = function () { - // The store changed. Check if the snapshot changed since the last time we - // read from the store. - if (checkIfSnapshotChanged(inst)) { - // Force a re-render. - forceStoreRerender(fiber); - } - }; // Subscribe to the store and return a clean-up function. + var rootRenderLanes = getWorkInProgressRootRenderLanes(); - return subscribe(handleStoreChange); + if (!includesBlockingLane(root, rootRenderLanes)) { + pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); } + } // Read the current snapshot from the store on every render. This breaks the + // normal rules of React, and only works because store updates are + // always synchronous. - function checkIfSnapshotChanged(inst) { - var latestGetSnapshot = inst.getSnapshot; - var prevValue = inst.value; - try { - var nextValue = latestGetSnapshot(); - return !objectIs(prevValue, nextValue); - } catch (error) { - return true; - } - } + hook.memoizedState = nextSnapshot; + var inst = { + value: nextSnapshot, + getSnapshot: getSnapshot + }; + hook.queue = inst; // Schedule an effect to subscribe to the store. - function forceStoreRerender(fiber) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + mountEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [subscribe]); // Schedule an effect to update the mutable instance fields. We will update + // this whenever subscribe, getSnapshot, or value changes. Because there's no + // clean-up function, and we track the deps correctly, we can call pushEffect + // directly, without storing any additional state. For the same reason, we + // don't need to set a static flag, either. - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } + fiber.flags |= Passive$1; + pushEffect(HasEffect | Passive, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), createEffectInstance(), null); + return nextSnapshot; +} - function mountStateImpl(initialState) { - var hook = mountWorkInProgressHook(); +function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { + var fiber = currentlyRenderingFiber$1; + var hook = updateWorkInProgressHook(); // Read the current snapshot from the store on every render. This breaks the + // normal rules of React, and only works because store updates are + // always synchronous. - if (typeof initialState === "function") { - var initialStateInitializer = initialState; // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + var nextSnapshot; - initialState = initialStateInitializer(); + { + nextSnapshot = getSnapshot(); - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + { + if (!didWarnUncachedGetSnapshot) { + var cachedSnapshot = getSnapshot(); + + if (!objectIs(nextSnapshot, cachedSnapshot)) { + error('The result of getSnapshot should be cached to avoid an infinite loop'); - initialStateInitializer(); - setIsStrictModeForDevtools(false); + didWarnUncachedGetSnapshot = true; } } - - hook.memoizedState = hook.baseState = initialState; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: basicStateReducer, - lastRenderedState: initialState - }; - hook.queue = queue; - return hook; } + } - function mountState(initialState) { - var hook = mountStateImpl(initialState); - var queue = hook.queue; - var dispatch = dispatchSetState.bind( - null, - currentlyRenderingFiber$1, - queue - ); - queue.dispatch = dispatch; - return [hook.memoizedState, dispatch]; - } + var prevSnapshot = (currentHook || hook).memoizedState; + var snapshotChanged = !objectIs(prevSnapshot, nextSnapshot); - function updateState(initialState) { - return updateReducer(basicStateReducer); - } + if (snapshotChanged) { + hook.memoizedState = nextSnapshot; + markWorkInProgressReceivedUpdate(); + } - function rerenderState(initialState) { - return rerenderReducer(basicStateReducer); - } + var inst = hook.queue; + updateEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [subscribe]); // Whenever getSnapshot or subscribe changes, we need to check in the + // commit phase if there was an interleaved mutation. In concurrent mode + // this can happen all the time, but even in synchronous mode, an earlier + // effect may have mutated the store. - function mountOptimistic(passthrough, reducer) { - var hook = mountWorkInProgressHook(); - hook.memoizedState = hook.baseState = passthrough; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - // Optimistic state does not use the eager update optimization. - lastRenderedReducer: null, - lastRenderedState: null - }; - hook.queue = queue; // This is different than the normal setState function. + if (inst.getSnapshot !== getSnapshot || snapshotChanged || // Check if the subscribe function changed. We can save some memory by + // checking whether we scheduled a subscription effect above. + workInProgressHook !== null && workInProgressHook.memoizedState.tag & HasEffect) { + fiber.flags |= Passive$1; + pushEffect(HasEffect | Passive, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), createEffectInstance(), null); // Unless we're rendering a blocking lane, schedule a consistency check. + // Right before committing, we will walk the tree and check if any of the + // stores were mutated. + + var root = getWorkInProgressRoot(); - var dispatch = dispatchOptimisticSetState.bind( - null, - currentlyRenderingFiber$1, - true, - queue - ); - queue.dispatch = dispatch; - return [passthrough, dispatch]; + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } - function updateOptimistic(passthrough, reducer) { - var hook = updateWorkInProgressHook(); - return updateOptimisticImpl(hook, currentHook, passthrough, reducer); + if (!includesBlockingLane(root, renderLanes)) { + pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); } + } - function updateOptimisticImpl(hook, current, passthrough, reducer) { - // Optimistic updates are always rebased on top of the latest value passed in - // as an argument. It's called a passthrough because if there are no pending - // updates, it will be returned as-is. - // - // Reset the base state to the passthrough. Future updates will be applied - // on top of this. - hook.baseState = passthrough; // If a reducer is not provided, default to the same one used by useState. + return nextSnapshot; +} - var resolvedReducer = - typeof reducer === "function" ? reducer : basicStateReducer; - return updateReducerImpl(hook, currentHook, resolvedReducer); - } +function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) { + fiber.flags |= StoreConsistency; + var check = { + getSnapshot: getSnapshot, + value: renderedSnapshot + }; + var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + + if (componentUpdateQueue === null) { + componentUpdateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; + componentUpdateQueue.stores = [check]; + } else { + var stores = componentUpdateQueue.stores; + + if (stores === null) { + componentUpdateQueue.stores = [check]; + } else { + stores.push(check); + } + } +} - function rerenderOptimistic(passthrough, reducer) { - // Unlike useState, useOptimistic doesn't support render phase updates. - // Also unlike useState, we need to replay all pending updates again in case - // the passthrough value changed. - // - // So instead of a forked re-render implementation that knows how to handle - // render phase udpates, we can use the same implementation as during a - // regular mount or update. - var hook = updateWorkInProgressHook(); - - if (currentHook !== null) { - // This is an update. Process the update queue. - return updateOptimisticImpl(hook, currentHook, passthrough, reducer); - } // This is a mount. No updates to process. - // Reset the base state to the passthrough. Future updates will be applied - // on top of this. - - hook.baseState = passthrough; - var dispatch = hook.queue.dispatch; - return [passthrough, dispatch]; - } // useActionState actions run sequentially, because each action receives the - // previous state as an argument. We store pending actions on a queue. - - function dispatchActionState( - fiber, - actionQueue, - setPendingState, - setState, - payload - ) { - if (isRenderPhaseUpdate(fiber)) { - throw new Error("Cannot update form state while rendering."); - } - - var last = actionQueue.pending; - - if (last === null) { - // There are no pending actions; this is the first one. We can run - // it immediately. - var newLast = { - payload: payload, - next: null // circular - }; - newLast.next = actionQueue.pending = newLast; - runActionStateAction(actionQueue, setPendingState, setState, payload); - } else { - // There's already an action running. Add to the queue. - var first = last.next; - var _newLast = { - payload: payload, - next: first - }; - actionQueue.pending = last.next = _newLast; - } +function updateStoreInstance(fiber, inst, nextSnapshot, getSnapshot) { + // These are updated in the passive phase + inst.value = nextSnapshot; + inst.getSnapshot = getSnapshot; // Something may have been mutated in between render and commit. This could + // have been in an event that fired before the passive effects, or it could + // have been in a layout effect. In that case, we would have used the old + // snapsho and getSnapshot values to bail out. We need to check one more time. + + if (checkIfSnapshotChanged(inst)) { + // Force a re-render. + forceStoreRerender(fiber); + } +} + +function subscribeToStore(fiber, inst, subscribe) { + var handleStoreChange = function () { + // The store changed. Check if the snapshot changed since the last time we + // read from the store. + if (checkIfSnapshotChanged(inst)) { + // Force a re-render. + forceStoreRerender(fiber); } + }; // Subscribe to the store and return a clean-up function. - function runActionStateAction( - actionQueue, - setPendingState, - setState, - payload - ) { - var action = actionQueue.action; - var prevState = actionQueue.state; // This is a fork of startTransition - var prevTransition = ReactSharedInternals.T; - var currentTransition = { - _callbacks: new Set() - }; - ReactSharedInternals.T = currentTransition; + return subscribe(handleStoreChange); +} - { - ReactSharedInternals.T._updatedFibers = new Set(); - } // Optimistically update the pending state, similar to useTransition. - // This will be reverted automatically when all actions are finished. +function checkIfSnapshotChanged(inst) { + var latestGetSnapshot = inst.getSnapshot; + var prevValue = inst.value; - setPendingState(true); + try { + var nextValue = latestGetSnapshot(); + return !objectIs(prevValue, nextValue); + } catch (error) { + return true; + } +} - try { - var returnValue = action(prevState, payload); - - if ( - returnValue !== null && - typeof returnValue === "object" && // $FlowFixMe[method-unbinding] - typeof returnValue.then === "function" - ) { - var thenable = returnValue; - notifyTransitionCallbacks(currentTransition, thenable); // Attach a listener to read the return state of the action. As soon as - // this resolves, we can run the next action in the sequence. - - thenable.then( - function (nextState) { - actionQueue.state = nextState; - finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - }, - function () { - return finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - } - ); - setState(thenable); - } else { - setState(returnValue); - var nextState = returnValue; - actionQueue.state = nextState; - finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - } - } catch (error) { - // This is a trick to get the `useActionState` hook to rethrow the error. - // When it unwraps the thenable with the `use` algorithm, the error - // will be thrown. - var rejectedThenable = { - then: function () {}, - status: "rejected", - reason: error // $FlowFixMe: Not sure why this doesn't work - }; - setState(rejectedThenable); - finishRunningActionStateAction(actionQueue, setPendingState, setState); - } finally { - ReactSharedInternals.T = prevTransition; +function forceStoreRerender(fiber) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - { - if (prevTransition === null && currentTransition._updatedFibers) { - var updatedFibersCount = currentTransition._updatedFibers.size; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} - currentTransition._updatedFibers.clear(); +function mountStateImpl(initialState) { + var hook = mountWorkInProgressHook(); - if (updatedFibersCount > 10) { - warn( - "Detected a large number of updates inside startTransition. " + - "If this is due to a subscription please re-write it to use React provided hooks. " + - "Otherwise concurrent mode guarantees are off the table." - ); - } - } - } - } - } + if (typeof initialState === 'function') { + var initialStateInitializer = initialState; // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - function finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ) { - // The action finished running. Pop it from the queue and run the next pending - // action, if there are any. - var last = actionQueue.pending; + initialState = initialStateInitializer(); - if (last !== null) { - var first = last.next; + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - if (first === last) { - // This was the last action in the queue. - actionQueue.pending = null; - } else { - // Remove the first node from the circular queue. - var next = first.next; - last.next = next; // Run the next action. - - runActionStateAction( - actionQueue, - setPendingState, - setState, - next.payload - ); - } - } + initialStateInitializer(); + setIsStrictModeForDevtools(false); } + } - function actionStateReducer(oldState, newState) { - return newState; - } + hook.memoizedState = hook.baseState = initialState; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: basicStateReducer, + lastRenderedState: initialState + }; + hook.queue = queue; + return hook; +} - function mountActionState(action, initialStateProp, permalink) { - var initialState = initialStateProp; - // the `use` algorithm during render. +function mountState(initialState) { + var hook = mountStateImpl(initialState); + var queue = hook.queue; + var dispatch = dispatchSetState.bind(null, currentlyRenderingFiber$1, queue); + queue.dispatch = dispatch; + return [hook.memoizedState, dispatch]; +} - var stateHook = mountWorkInProgressHook(); - stateHook.memoizedState = stateHook.baseState = initialState; // TODO: Typing this "correctly" results in recursion limit errors - // const stateQueue: UpdateQueue, S | Awaited> = { +function updateState(initialState) { + return updateReducer(basicStateReducer); +} - var stateQueue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: actionStateReducer, - lastRenderedState: initialState - }; - stateHook.queue = stateQueue; - var setState = dispatchSetState.bind( - null, - currentlyRenderingFiber$1, - stateQueue - ); - stateQueue.dispatch = setState; // Pending state. This is used to store the pending state of the action. - // Tracked optimistically, like a transition pending state. - - var pendingStateHook = mountStateImpl(false); - var setPendingState = dispatchOptimisticSetState.bind( - null, - currentlyRenderingFiber$1, - false, - pendingStateHook.queue - ); // Action queue hook. This is used to queue pending actions. The queue is - // shared between all instances of the hook. Similar to a regular state queue, - // but different because the actions are run sequentially, and they run in - // an event instead of during render. - - var actionQueueHook = mountWorkInProgressHook(); - var actionQueue = { - state: initialState, - dispatch: null, - // circular - action: action, - pending: null - }; - actionQueueHook.queue = actionQueue; - var dispatch = dispatchActionState.bind( - null, - currentlyRenderingFiber$1, - actionQueue, - setPendingState, - setState - ); - actionQueue.dispatch = dispatch; // Stash the action function on the memoized state of the hook. We'll use this - // to detect when the action function changes so we can update it in - // an effect. - - actionQueueHook.memoizedState = action; - return [initialState, dispatch, false]; - } - - function updateActionState(action, initialState, permalink) { - var stateHook = updateWorkInProgressHook(); - var currentStateHook = currentHook; - return updateActionStateImpl(stateHook, currentStateHook, action); - } - - function updateActionStateImpl( - stateHook, - currentStateHook, - action, - initialState, - permalink - ) { - var _updateReducerImpl = updateReducerImpl( - stateHook, - currentStateHook, - actionStateReducer - ), - actionResult = _updateReducerImpl[0]; - - var _updateState = updateState(), - isPending = _updateState[0]; // This will suspend until the action finishes. - - var state = - typeof actionResult === "object" && - actionResult !== null && // $FlowFixMe[method-unbinding] - typeof actionResult.then === "function" - ? useThenable(actionResult) - : actionResult; - var actionQueueHook = updateWorkInProgressHook(); - var actionQueue = actionQueueHook.queue; - var dispatch = actionQueue.dispatch; // Check if a new action was passed. If so, update it in an effect. - - var prevAction = actionQueueHook.memoizedState; - - if (action !== prevAction) { - currentlyRenderingFiber$1.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - actionStateActionEffect.bind(null, actionQueue, action), - createEffectInstance(), - null - ); - } - - return [state, dispatch, isPending]; - } - - function actionStateActionEffect(actionQueue, action) { - actionQueue.action = action; - } - - function rerenderActionState(action, initialState, permalink) { - // Unlike useState, useActionState doesn't support render phase updates. - // Also unlike useState, we need to replay all pending updates again in case - // the passthrough value changed. - // - // So instead of a forked re-render implementation that knows how to handle - // render phase udpates, we can use the same implementation as during a - // regular mount or update. - var stateHook = updateWorkInProgressHook(); - var currentStateHook = currentHook; +function rerenderState(initialState) { + return rerenderReducer(basicStateReducer); +} - if (currentStateHook !== null) { - // This is an update. Process the update queue. - return updateActionStateImpl(stateHook, currentStateHook, action); - } +function mountOptimistic(passthrough, reducer) { + var hook = mountWorkInProgressHook(); + hook.memoizedState = hook.baseState = passthrough; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + // Optimistic state does not use the eager update optimization. + lastRenderedReducer: null, + lastRenderedState: null + }; + hook.queue = queue; // This is different than the normal setState function. + + var dispatch = dispatchOptimisticSetState.bind(null, currentlyRenderingFiber$1, true, queue); + queue.dispatch = dispatch; + return [passthrough, dispatch]; +} - updateWorkInProgressHook(); // State - // This is a mount. No updates to process. +function updateOptimistic(passthrough, reducer) { + var hook = updateWorkInProgressHook(); + return updateOptimisticImpl(hook, currentHook, passthrough, reducer); +} - var state = stateHook.memoizedState; - var actionQueueHook = updateWorkInProgressHook(); - var actionQueue = actionQueueHook.queue; - var dispatch = actionQueue.dispatch; // This may have changed during the rerender. +function updateOptimisticImpl(hook, current, passthrough, reducer) { + // Optimistic updates are always rebased on top of the latest value passed in + // as an argument. It's called a passthrough because if there are no pending + // updates, it will be returned as-is. + // + // Reset the base state to the passthrough. Future updates will be applied + // on top of this. + hook.baseState = passthrough; // If a reducer is not provided, default to the same one used by useState. + + var resolvedReducer = typeof reducer === 'function' ? reducer : basicStateReducer; + return updateReducerImpl(hook, currentHook, resolvedReducer); +} - actionQueueHook.memoizedState = action; // For mount, pending is always false. +function rerenderOptimistic(passthrough, reducer) { + // Unlike useState, useOptimistic doesn't support render phase updates. + // Also unlike useState, we need to replay all pending updates again in case + // the passthrough value changed. + // + // So instead of a forked re-render implementation that knows how to handle + // render phase udpates, we can use the same implementation as during a + // regular mount or update. + var hook = updateWorkInProgressHook(); + + if (currentHook !== null) { + // This is an update. Process the update queue. + return updateOptimisticImpl(hook, currentHook, passthrough, reducer); + } // This is a mount. No updates to process. + // Reset the base state to the passthrough. Future updates will be applied + // on top of this. + + + hook.baseState = passthrough; + var dispatch = hook.queue.dispatch; + return [passthrough, dispatch]; +} // useActionState actions run sequentially, because each action receives the +// previous state as an argument. We store pending actions on a queue. + + +function dispatchActionState(fiber, actionQueue, setPendingState, setState, payload) { + if (isRenderPhaseUpdate(fiber)) { + throw new Error('Cannot update form state while rendering.'); + } + + var last = actionQueue.pending; + + if (last === null) { + // There are no pending actions; this is the first one. We can run + // it immediately. + var newLast = { + payload: payload, + next: null // circular - return [state, dispatch, false]; - } + }; + newLast.next = actionQueue.pending = newLast; + runActionStateAction(actionQueue, setPendingState, setState, payload); + } else { + // There's already an action running. Add to the queue. + var first = last.next; + var _newLast = { + payload: payload, + next: first + }; + actionQueue.pending = last.next = _newLast; + } +} - function pushEffect(tag, create, inst, deps) { - var effect = { - tag: tag, - create: create, - inst: inst, - deps: deps, - // Circular - next: null - }; - var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; +function runActionStateAction(actionQueue, setPendingState, setState, payload) { + var action = actionQueue.action; + var prevState = actionQueue.state; // This is a fork of startTransition - if (componentUpdateQueue === null) { - componentUpdateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; - componentUpdateQueue.lastEffect = effect.next = effect; - } else { - var lastEffect = componentUpdateQueue.lastEffect; + var prevTransition = ReactSharedInternals.T; + var currentTransition = { + _callbacks: new Set() + }; + ReactSharedInternals.T = currentTransition; - if (lastEffect === null) { - componentUpdateQueue.lastEffect = effect.next = effect; - } else { - var firstEffect = lastEffect.next; - lastEffect.next = effect; - effect.next = firstEffect; - componentUpdateQueue.lastEffect = effect; - } - } + { + ReactSharedInternals.T._updatedFibers = new Set(); + } // Optimistically update the pending state, similar to useTransition. + // This will be reverted automatically when all actions are finished. - return effect; - } - function createEffectInstance() { - return { - destroy: undefined - }; - } + setPendingState(true); - function mountRef(initialValue) { - var hook = mountWorkInProgressHook(); - var ref = { - current: initialValue - }; - hook.memoizedState = ref; - return ref; - } + try { + var returnValue = action(prevState, payload); - function updateRef(initialValue) { - var hook = updateWorkInProgressHook(); - return hook.memoizedState; - } + if (returnValue !== null && typeof returnValue === 'object' && // $FlowFixMe[method-unbinding] + typeof returnValue.then === 'function') { + var thenable = returnValue; + notifyTransitionCallbacks(currentTransition, thenable); // Attach a listener to read the return state of the action. As soon as + // this resolves, we can run the next action in the sequence. - function mountEffectImpl(fiberFlags, hookFlags, create, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - currentlyRenderingFiber$1.flags |= fiberFlags; - hook.memoizedState = pushEffect( - HasEffect | hookFlags, - create, - createEffectInstance(), - nextDeps - ); - } + thenable.then(function (nextState) { + actionQueue.state = nextState; + finishRunningActionStateAction(actionQueue, setPendingState, setState); + }, function () { + return finishRunningActionStateAction(actionQueue, setPendingState, setState); + }); + setState(thenable); + } else { + setState(returnValue); + var nextState = returnValue; + actionQueue.state = nextState; + finishRunningActionStateAction(actionQueue, setPendingState, setState); + } + } catch (error) { + // This is a trick to get the `useActionState` hook to rethrow the error. + // When it unwraps the thenable with the `use` algorithm, the error + // will be thrown. + var rejectedThenable = { + then: function () {}, + status: 'rejected', + reason: error // $FlowFixMe: Not sure why this doesn't work - function updateEffectImpl(fiberFlags, hookFlags, create, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var effect = hook.memoizedState; - var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase - // state update or for strict mode. + }; + setState(rejectedThenable); + finishRunningActionStateAction(actionQueue, setPendingState, setState); + } finally { + ReactSharedInternals.T = prevTransition; - if (currentHook !== null) { - if (nextDeps !== null) { - var prevEffect = currentHook.memoizedState; - var prevDeps = prevEffect.deps; + { + if (prevTransition === null && currentTransition._updatedFibers) { + var updatedFibersCount = currentTransition._updatedFibers.size; - if (areHookInputsEqual(nextDeps, prevDeps)) { - hook.memoizedState = pushEffect(hookFlags, create, inst, nextDeps); - return; - } - } - } + currentTransition._updatedFibers.clear(); - currentlyRenderingFiber$1.flags |= fiberFlags; - hook.memoizedState = pushEffect( - HasEffect | hookFlags, - create, - inst, - nextDeps - ); - } - - function mountEffect(create, deps) { - if ( - (currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode && - (currentlyRenderingFiber$1.mode & NoStrictPassiveEffectsMode) === NoMode - ) { - mountEffectImpl( - MountPassiveDev | Passive$1 | PassiveStatic, - Passive, - create, - deps - ); - } else { - mountEffectImpl(Passive$1 | PassiveStatic, Passive, create, deps); + if (updatedFibersCount > 10) { + warn('Detected a large number of updates inside startTransition. ' + 'If this is due to a subscription please re-write it to use React provided hooks. ' + 'Otherwise concurrent mode guarantees are off the table.'); + } } } + } +} - function updateEffect(create, deps) { - updateEffectImpl(Passive$1, Passive, create, deps); - } +function finishRunningActionStateAction(actionQueue, setPendingState, setState) { + // The action finished running. Pop it from the queue and run the next pending + // action, if there are any. + var last = actionQueue.pending; - function mountInsertionEffect(create, deps) { - mountEffectImpl(Update, Insertion, create, deps); - } + if (last !== null) { + var first = last.next; - function updateInsertionEffect(create, deps) { - return updateEffectImpl(Update, Insertion, create, deps); + if (first === last) { + // This was the last action in the queue. + actionQueue.pending = null; + } else { + // Remove the first node from the circular queue. + var next = first.next; + last.next = next; // Run the next action. + + runActionStateAction(actionQueue, setPendingState, setState, next.payload); } + } +} - function mountLayoutEffect(create, deps) { - var fiberFlags = Update | LayoutStatic; +function actionStateReducer(oldState, newState) { + return newState; +} - if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { - fiberFlags |= MountLayoutDev; - } +function mountActionState(action, initialStateProp, permalink) { + var initialState = initialStateProp; + // the `use` algorithm during render. + + + var stateHook = mountWorkInProgressHook(); + stateHook.memoizedState = stateHook.baseState = initialState; // TODO: Typing this "correctly" results in recursion limit errors + // const stateQueue: UpdateQueue, S | Awaited> = { + + var stateQueue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: actionStateReducer, + lastRenderedState: initialState + }; + stateHook.queue = stateQueue; + var setState = dispatchSetState.bind(null, currentlyRenderingFiber$1, stateQueue); + stateQueue.dispatch = setState; // Pending state. This is used to store the pending state of the action. + // Tracked optimistically, like a transition pending state. + + var pendingStateHook = mountStateImpl(false); + var setPendingState = dispatchOptimisticSetState.bind(null, currentlyRenderingFiber$1, false, pendingStateHook.queue); // Action queue hook. This is used to queue pending actions. The queue is + // shared between all instances of the hook. Similar to a regular state queue, + // but different because the actions are run sequentially, and they run in + // an event instead of during render. + + var actionQueueHook = mountWorkInProgressHook(); + var actionQueue = { + state: initialState, + dispatch: null, + // circular + action: action, + pending: null + }; + actionQueueHook.queue = actionQueue; + var dispatch = dispatchActionState.bind(null, currentlyRenderingFiber$1, actionQueue, setPendingState, setState); + actionQueue.dispatch = dispatch; // Stash the action function on the memoized state of the hook. We'll use this + // to detect when the action function changes so we can update it in + // an effect. + + actionQueueHook.memoizedState = action; + return [initialState, dispatch, false]; +} - return mountEffectImpl(fiberFlags, Layout, create, deps); - } +function updateActionState(action, initialState, permalink) { + var stateHook = updateWorkInProgressHook(); + var currentStateHook = currentHook; + return updateActionStateImpl(stateHook, currentStateHook, action); +} - function updateLayoutEffect(create, deps) { - return updateEffectImpl(Update, Layout, create, deps); - } +function updateActionStateImpl(stateHook, currentStateHook, action, initialState, permalink) { + var _updateReducerImpl = updateReducerImpl(stateHook, currentStateHook, actionStateReducer), + actionResult = _updateReducerImpl[0]; - function imperativeHandleEffect(create, ref) { - if (typeof ref === "function") { - var refCallback = ref; - var inst = create(); - refCallback(inst); - return function () { - refCallback(null); - }; - } else if (ref !== null && ref !== undefined) { - var refObject = ref; + var _updateState = updateState(), + isPending = _updateState[0]; // This will suspend until the action finishes. - { - if (!refObject.hasOwnProperty("current")) { - error( - "Expected useImperativeHandle() first argument to either be a " + - "ref callback or React.createRef() object. Instead received: %s.", - "an object with keys {" + Object.keys(refObject).join(", ") + "}" - ); - } - } - var _inst = create(); + var state = typeof actionResult === 'object' && actionResult !== null && // $FlowFixMe[method-unbinding] + typeof actionResult.then === 'function' ? useThenable(actionResult) : actionResult; + var actionQueueHook = updateWorkInProgressHook(); + var actionQueue = actionQueueHook.queue; + var dispatch = actionQueue.dispatch; // Check if a new action was passed. If so, update it in an effect. - refObject.current = _inst; - return function () { - refObject.current = null; - }; - } - } + var prevAction = actionQueueHook.memoizedState; - function mountImperativeHandle(ref, create, deps) { - { - if (typeof create !== "function") { - error( - "Expected useImperativeHandle() second argument to be a function " + - "that creates a handle. Instead received: %s.", - create !== null ? typeof create : "null" - ); - } - } // TODO: If deps are provided, should we skip comparing the ref itself? + if (action !== prevAction) { + currentlyRenderingFiber$1.flags |= Passive$1; + pushEffect(HasEffect | Passive, actionStateActionEffect.bind(null, actionQueue, action), createEffectInstance(), null); + } - var effectDeps = - deps !== null && deps !== undefined ? deps.concat([ref]) : null; - var fiberFlags = Update | LayoutStatic; + return [state, dispatch, isPending]; +} - if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { - fiberFlags |= MountLayoutDev; - } +function actionStateActionEffect(actionQueue, action) { + actionQueue.action = action; +} - mountEffectImpl( - fiberFlags, - Layout, - imperativeHandleEffect.bind(null, create, ref), - effectDeps - ); - } +function rerenderActionState(action, initialState, permalink) { + // Unlike useState, useActionState doesn't support render phase updates. + // Also unlike useState, we need to replay all pending updates again in case + // the passthrough value changed. + // + // So instead of a forked re-render implementation that knows how to handle + // render phase udpates, we can use the same implementation as during a + // regular mount or update. + var stateHook = updateWorkInProgressHook(); + var currentStateHook = currentHook; + + if (currentStateHook !== null) { + // This is an update. Process the update queue. + return updateActionStateImpl(stateHook, currentStateHook, action); + } + + updateWorkInProgressHook(); // State + // This is a mount. No updates to process. + + var state = stateHook.memoizedState; + var actionQueueHook = updateWorkInProgressHook(); + var actionQueue = actionQueueHook.queue; + var dispatch = actionQueue.dispatch; // This may have changed during the rerender. + + actionQueueHook.memoizedState = action; // For mount, pending is always false. + + return [state, dispatch, false]; +} - function updateImperativeHandle(ref, create, deps) { - { - if (typeof create !== "function") { - error( - "Expected useImperativeHandle() second argument to be a function " + - "that creates a handle. Instead received: %s.", - create !== null ? typeof create : "null" - ); - } - } // TODO: If deps are provided, should we skip comparing the ref itself? +function pushEffect(tag, create, inst, deps) { + var effect = { + tag: tag, + create: create, + inst: inst, + deps: deps, + // Circular + next: null + }; + var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + + if (componentUpdateQueue === null) { + componentUpdateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; + componentUpdateQueue.lastEffect = effect.next = effect; + } else { + var lastEffect = componentUpdateQueue.lastEffect; + + if (lastEffect === null) { + componentUpdateQueue.lastEffect = effect.next = effect; + } else { + var firstEffect = lastEffect.next; + lastEffect.next = effect; + effect.next = firstEffect; + componentUpdateQueue.lastEffect = effect; + } + } + + return effect; +} - var effectDeps = - deps !== null && deps !== undefined ? deps.concat([ref]) : null; - updateEffectImpl( - Update, - Layout, - imperativeHandleEffect.bind(null, create, ref), - effectDeps - ); - } +function createEffectInstance() { + return { + destroy: undefined + }; +} - function mountDebugValue(value, formatterFn) { - // This hook is normally a no-op. - // The react-debug-hooks package injects its own implementation - // so that e.g. DevTools can display custom hook values. - } +function mountRef(initialValue) { + var hook = mountWorkInProgressHook(); + var ref = { + current: initialValue + }; + hook.memoizedState = ref; + return ref; +} - var updateDebugValue = mountDebugValue; +function updateRef(initialValue) { + var hook = updateWorkInProgressHook(); + return hook.memoizedState; +} - function mountCallback(callback, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - hook.memoizedState = [callback, nextDeps]; - return callback; - } +function mountEffectImpl(fiberFlags, hookFlags, create, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + currentlyRenderingFiber$1.flags |= fiberFlags; + hook.memoizedState = pushEffect(HasEffect | hookFlags, create, createEffectInstance(), nextDeps); +} - function updateCallback(callback, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var prevState = hook.memoizedState; +function updateEffectImpl(fiberFlags, hookFlags, create, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var effect = hook.memoizedState; + var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase + // state update or for strict mode. - if (nextDeps !== null) { - var prevDeps = prevState[1]; + if (currentHook !== null) { + if (nextDeps !== null) { + var prevEffect = currentHook.memoizedState; + var prevDeps = prevEffect.deps; - if (areHookInputsEqual(nextDeps, prevDeps)) { - return prevState[0]; - } + if (areHookInputsEqual(nextDeps, prevDeps)) { + hook.memoizedState = pushEffect(hookFlags, create, inst, nextDeps); + return; } - - hook.memoizedState = [callback, nextDeps]; - return callback; } + } - function mountMemo(nextCreate, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var nextValue = nextCreate(); + currentlyRenderingFiber$1.flags |= fiberFlags; + hook.memoizedState = pushEffect(HasEffect | hookFlags, create, inst, nextDeps); +} - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - nextCreate(); - setIsStrictModeForDevtools(false); - } +function mountEffect(create, deps) { + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode && (currentlyRenderingFiber$1.mode & NoStrictPassiveEffectsMode) === NoMode) { + mountEffectImpl(MountPassiveDev | Passive$1 | PassiveStatic, Passive, create, deps); + } else { + mountEffectImpl(Passive$1 | PassiveStatic, Passive, create, deps); + } +} - hook.memoizedState = [nextValue, nextDeps]; - return nextValue; - } +function updateEffect(create, deps) { + updateEffectImpl(Passive$1, Passive, create, deps); +} - function updateMemo(nextCreate, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var prevState = hook.memoizedState; // Assume these are defined. If they're not, areHookInputsEqual will warn. +function mountInsertionEffect(create, deps) { + mountEffectImpl(Update, Insertion, create, deps); +} - if (nextDeps !== null) { - var prevDeps = prevState[1]; +function updateInsertionEffect(create, deps) { + return updateEffectImpl(Update, Insertion, create, deps); +} - if (areHookInputsEqual(nextDeps, prevDeps)) { - return prevState[0]; - } - } +function mountLayoutEffect(create, deps) { + var fiberFlags = Update | LayoutStatic; - var nextValue = nextCreate(); + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { + fiberFlags |= MountLayoutDev; + } - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - nextCreate(); - setIsStrictModeForDevtools(false); - } + return mountEffectImpl(fiberFlags, Layout, create, deps); +} - hook.memoizedState = [nextValue, nextDeps]; - return nextValue; - } +function updateLayoutEffect(create, deps) { + return updateEffectImpl(Update, Layout, create, deps); +} - function mountDeferredValue(value, initialValue) { - var hook = mountWorkInProgressHook(); - return mountDeferredValueImpl(hook, value, initialValue); - } +function imperativeHandleEffect(create, ref) { + if (typeof ref === 'function') { + var refCallback = ref; + var inst = create(); + refCallback(inst); + return function () { + refCallback(null); + }; + } else if (ref !== null && ref !== undefined) { + var refObject = ref; - function updateDeferredValue(value, initialValue) { - var hook = updateWorkInProgressHook(); - var resolvedCurrentHook = currentHook; - var prevValue = resolvedCurrentHook.memoizedState; - return updateDeferredValueImpl(hook, prevValue, value, initialValue); + { + if (!refObject.hasOwnProperty('current')) { + error('Expected useImperativeHandle() first argument to either be a ' + 'ref callback or React.createRef() object. Instead received: %s.', 'an object with keys {' + Object.keys(refObject).join(', ') + '}'); + } } - function rerenderDeferredValue(value, initialValue) { - var hook = updateWorkInProgressHook(); + var _inst = create(); - if (currentHook === null) { - // This is a rerender during a mount. - return mountDeferredValueImpl(hook, value, initialValue); - } else { - // This is a rerender during an update. - var prevValue = currentHook.memoizedState; - return updateDeferredValueImpl(hook, prevValue, value, initialValue); - } - } - - function mountDeferredValueImpl(hook, value, initialValue) { - if ( - // When `initialValue` is provided, we defer the initial render even if the - // current render is not synchronous. - initialValue !== undefined && // However, to avoid waterfalls, we do not defer if this render - // was itself spawned by an earlier useDeferredValue. Check if DeferredLane - // is part of the render lanes. - !includesSomeLane(renderLanes, DeferredLane) - ) { - // Render with the initial value - hook.memoizedState = initialValue; // Schedule a deferred render to switch to the final value. - - var deferredLane = requestDeferredLane(); - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - deferredLane - ); - markSkippedUpdateLanes(deferredLane); - return initialValue; - } else { - hook.memoizedState = value; - return value; - } + refObject.current = _inst; + return function () { + refObject.current = null; + }; + } +} + +function mountImperativeHandle(ref, create, deps) { + { + if (typeof create !== 'function') { + error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null'); } + } // TODO: If deps are provided, should we skip comparing the ref itself? - function updateDeferredValueImpl(hook, prevValue, value, initialValue) { - if (objectIs(value, prevValue)) { - // The incoming value is referentially identical to the currently rendered - // value, so we can bail out quickly. - return value; - } else { - // Received a new value that's different from the current value. - // Check if we're inside a hidden tree - if (isCurrentTreeHidden()) { - // Revealing a prerendered tree is considered the same as mounting new - // one, so we reuse the "mount" path in this case. - var resultValue = mountDeferredValueImpl(hook, value, initialValue); // Unlike during an actual mount, we need to mark this as an update if - // the value changed. - - if (!objectIs(resultValue, prevValue)) { - markWorkInProgressReceivedUpdate(); - } - return resultValue; - } + var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; + var fiberFlags = Update | LayoutStatic; - var shouldDeferValue = !includesOnlyNonUrgentLanes(renderLanes); - - if (shouldDeferValue) { - // This is an urgent update. Since the value has changed, keep using the - // previous value and spawn a deferred render to update it later. - // Schedule a deferred render - var deferredLane = requestDeferredLane(); - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - deferredLane - ); - markSkippedUpdateLanes(deferredLane); // Reuse the previous value. We do not need to mark this as an update, - // because we did not render a new value. - - return prevValue; - } else { - // This is not an urgent update, so we can use the latest value regardless - // of what it is. No need to defer it. - // Mark this as an update to prevent the fiber from bailing out. - markWorkInProgressReceivedUpdate(); - hook.memoizedState = value; - return value; - } - } + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { + fiberFlags |= MountLayoutDev; + } + + mountEffectImpl(fiberFlags, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps); +} + +function updateImperativeHandle(ref, create, deps) { + { + if (typeof create !== 'function') { + error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null'); } + } // TODO: If deps are provided, should we skip comparing the ref itself? - function startTransition( - fiber, - queue, - pendingState, - finishedState, - callback, - options - ) { - var previousPriority = getCurrentUpdatePriority(); - setCurrentUpdatePriority( - higherEventPriority(previousPriority, ContinuousEventPriority) - ); - var prevTransition = ReactSharedInternals.T; - var currentTransition = { - _callbacks: new Set() - }; - { - // We don't really need to use an optimistic update here, because we - // schedule a second "revert" update below (which we use to suspend the - // transition until the async action scope has finished). But we'll use an - // optimistic update anyway to make it less likely the behavior accidentally - // diverges; for example, both an optimistic update and this one should - // share the same lane. - ReactSharedInternals.T = currentTransition; - dispatchOptimisticSetState(fiber, false, queue, pendingState); - } + var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; + updateEffectImpl(Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps); +} - { - currentTransition._updatedFibers = new Set(); - } +function mountDebugValue(value, formatterFn) {// This hook is normally a no-op. + // The react-debug-hooks package injects its own implementation + // so that e.g. DevTools can display custom hook values. +} - try { - if (enableAsyncActions) { - var returnValue = callback(); // Check if we're inside an async action scope. If so, we'll entangle - // this new action with the existing scope. - // - // If we're not already inside an async action scope, and this action is - // async, then we'll create a new async scope. - // - // In the async case, the resulting render will suspend until the async - // action scope has finished. - - if ( - returnValue !== null && - typeof returnValue === "object" && - typeof returnValue.then === "function" - ) { - var thenable = returnValue; - notifyTransitionCallbacks(currentTransition, thenable); // Create a thenable that resolves to `finishedState` once the async - // action has completed. - - var thenableForFinishedState = chainThenableValue( - thenable, - finishedState - ); - dispatchSetState(fiber, queue, thenableForFinishedState); - } else { - dispatchSetState(fiber, queue, finishedState); - } - } - } catch (error) { - { - // This is a trick to get the `useTransition` hook to rethrow the error. - // When it unwraps the thenable with the `use` algorithm, the error - // will be thrown. - var rejectedThenable = { - then: function () {}, - status: "rejected", - reason: error - }; - dispatchSetState(fiber, queue, rejectedThenable); - } - } finally { - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; +var updateDebugValue = mountDebugValue; - { - if (prevTransition === null && currentTransition._updatedFibers) { - var updatedFibersCount = currentTransition._updatedFibers.size; +function mountCallback(callback, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + hook.memoizedState = [callback, nextDeps]; + return callback; +} - currentTransition._updatedFibers.clear(); +function updateCallback(callback, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var prevState = hook.memoizedState; - if (updatedFibersCount > 10) { - warn( - "Detected a large number of updates inside startTransition. " + - "If this is due to a subscription please re-write it to use React provided hooks. " + - "Otherwise concurrent mode guarantees are off the table." - ); - } - } - } - } + if (nextDeps !== null) { + var prevDeps = prevState[1]; + + if (areHookInputsEqual(nextDeps, prevDeps)) { + return prevState[0]; } + } + + hook.memoizedState = [callback, nextDeps]; + return callback; +} - function mountTransition() { - var stateHook = mountStateImpl(false); // The `start` method never changes. +function mountMemo(nextCreate, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var nextValue = nextCreate(); - var start = startTransition.bind( - null, - currentlyRenderingFiber$1, - stateHook.queue, - true, - false - ); - var hook = mountWorkInProgressHook(); - hook.memoizedState = start; - return [false, start]; - } + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + nextCreate(); + setIsStrictModeForDevtools(false); + } - function updateTransition() { - var _updateState2 = updateState(), - booleanOrThenable = _updateState2[0]; + hook.memoizedState = [nextValue, nextDeps]; + return nextValue; +} - var hook = updateWorkInProgressHook(); - var start = hook.memoizedState; - var isPending = - typeof booleanOrThenable === "boolean" - ? booleanOrThenable // This will suspend until the async action scope has finished. - : useThenable(booleanOrThenable); - return [isPending, start]; - } +function updateMemo(nextCreate, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var prevState = hook.memoizedState; // Assume these are defined. If they're not, areHookInputsEqual will warn. - function rerenderTransition() { - var _rerenderState = rerenderState(), - booleanOrThenable = _rerenderState[0]; + if (nextDeps !== null) { + var prevDeps = prevState[1]; - var hook = updateWorkInProgressHook(); - var start = hook.memoizedState; - var isPending = - typeof booleanOrThenable === "boolean" - ? booleanOrThenable // This will suspend until the async action scope has finished. - : useThenable(booleanOrThenable); - return [isPending, start]; + if (areHookInputsEqual(nextDeps, prevDeps)) { + return prevState[0]; } + } - function useHostTransitionStatus() { - var status = readContext(HostTransitionContext); - return status !== null ? status : NotPendingTransition; - } + var nextValue = nextCreate(); - function mountId() { - var hook = mountWorkInProgressHook(); - var root = getWorkInProgressRoot(); // TODO: In Fizz, id generation is specific to each server config. Maybe we - // should do this in Fiber, too? Deferring this decision for now because - // there's no other place to store the prefix except for an internal field on - // the public createRoot object, which the fiber tree does not currently have - // a reference to. + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + nextCreate(); + setIsStrictModeForDevtools(false); + } - var identifierPrefix = root.identifierPrefix; - var id; + hook.memoizedState = [nextValue, nextDeps]; + return nextValue; +} - { - // Use a lowercase r prefix for client-generated ids. - var globalClientId = globalClientIdCounter++; - id = ":" + identifierPrefix + "r" + globalClientId.toString(32) + ":"; +function mountDeferredValue(value, initialValue) { + var hook = mountWorkInProgressHook(); + return mountDeferredValueImpl(hook, value, initialValue); +} + +function updateDeferredValue(value, initialValue) { + var hook = updateWorkInProgressHook(); + var resolvedCurrentHook = currentHook; + var prevValue = resolvedCurrentHook.memoizedState; + return updateDeferredValueImpl(hook, prevValue, value, initialValue); +} + +function rerenderDeferredValue(value, initialValue) { + var hook = updateWorkInProgressHook(); + + if (currentHook === null) { + // This is a rerender during a mount. + return mountDeferredValueImpl(hook, value, initialValue); + } else { + // This is a rerender during an update. + var prevValue = currentHook.memoizedState; + return updateDeferredValueImpl(hook, prevValue, value, initialValue); + } +} + +function mountDeferredValueImpl(hook, value, initialValue) { + if (// When `initialValue` is provided, we defer the initial render even if the + // current render is not synchronous. + initialValue !== undefined && // However, to avoid waterfalls, we do not defer if this render + // was itself spawned by an earlier useDeferredValue. Check if DeferredLane + // is part of the render lanes. + !includesSomeLane(renderLanes, DeferredLane)) { + // Render with the initial value + hook.memoizedState = initialValue; // Schedule a deferred render to switch to the final value. + + var deferredLane = requestDeferredLane(); + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, deferredLane); + markSkippedUpdateLanes(deferredLane); + return initialValue; + } else { + hook.memoizedState = value; + return value; + } +} + +function updateDeferredValueImpl(hook, prevValue, value, initialValue) { + if (objectIs(value, prevValue)) { + // The incoming value is referentially identical to the currently rendered + // value, so we can bail out quickly. + return value; + } else { + // Received a new value that's different from the current value. + // Check if we're inside a hidden tree + if (isCurrentTreeHidden()) { + // Revealing a prerendered tree is considered the same as mounting new + // one, so we reuse the "mount" path in this case. + var resultValue = mountDeferredValueImpl(hook, value, initialValue); // Unlike during an actual mount, we need to mark this as an update if + // the value changed. + + if (!objectIs(resultValue, prevValue)) { + markWorkInProgressReceivedUpdate(); } - hook.memoizedState = id; - return id; + return resultValue; } - function updateId() { - var hook = updateWorkInProgressHook(); - var id = hook.memoizedState; - return id; + var shouldDeferValue = !includesOnlyNonUrgentLanes(renderLanes); + + if (shouldDeferValue) { + // This is an urgent update. Since the value has changed, keep using the + // previous value and spawn a deferred render to update it later. + // Schedule a deferred render + var deferredLane = requestDeferredLane(); + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, deferredLane); + markSkippedUpdateLanes(deferredLane); // Reuse the previous value. We do not need to mark this as an update, + // because we did not render a new value. + + return prevValue; + } else { + // This is not an urgent update, so we can use the latest value regardless + // of what it is. No need to defer it. + // Mark this as an update to prevent the fiber from bailing out. + markWorkInProgressReceivedUpdate(); + hook.memoizedState = value; + return value; } + } +} + +function startTransition(fiber, queue, pendingState, finishedState, callback, options) { + var previousPriority = getCurrentUpdatePriority(); + setCurrentUpdatePriority(higherEventPriority(previousPriority, ContinuousEventPriority)); + var prevTransition = ReactSharedInternals.T; + var currentTransition = { + _callbacks: new Set() + }; + + { + // We don't really need to use an optimistic update here, because we + // schedule a second "revert" update below (which we use to suspend the + // transition until the async action scope has finished). But we'll use an + // optimistic update anyway to make it less likely the behavior accidentally + // diverges; for example, both an optimistic update and this one should + // share the same lane. + ReactSharedInternals.T = currentTransition; + dispatchOptimisticSetState(fiber, false, queue, pendingState); + } + + { + currentTransition._updatedFibers = new Set(); + } + + try { + if (enableAsyncActions) { + var returnValue = callback(); // Check if we're inside an async action scope. If so, we'll entangle + // this new action with the existing scope. + // + // If we're not already inside an async action scope, and this action is + // async, then we'll create a new async scope. + // + // In the async case, the resulting render will suspend until the async + // action scope has finished. + + if (returnValue !== null && typeof returnValue === 'object' && typeof returnValue.then === 'function') { + var thenable = returnValue; + notifyTransitionCallbacks(currentTransition, thenable); // Create a thenable that resolves to `finishedState` once the async + // action has completed. - function mountRefresh() { - var hook = mountWorkInProgressHook(); - var refresh = (hook.memoizedState = refreshCache.bind( - null, - currentlyRenderingFiber$1 - )); - return refresh; + var thenableForFinishedState = chainThenableValue(thenable, finishedState); + dispatchSetState(fiber, queue, thenableForFinishedState); + } else { + dispatchSetState(fiber, queue, finishedState); + } + } + } catch (error) { + { + // This is a trick to get the `useTransition` hook to rethrow the error. + // When it unwraps the thenable with the `use` algorithm, the error + // will be thrown. + var rejectedThenable = { + then: function () {}, + status: 'rejected', + reason: error + }; + dispatchSetState(fiber, queue, rejectedThenable); } + } finally { + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; + + { + if (prevTransition === null && currentTransition._updatedFibers) { + var updatedFibersCount = currentTransition._updatedFibers.size; + + currentTransition._updatedFibers.clear(); - function updateRefresh() { - var hook = updateWorkInProgressHook(); - return hook.memoizedState; + if (updatedFibersCount > 10) { + warn('Detected a large number of updates inside startTransition. ' + 'If this is due to a subscription please re-write it to use React provided hooks. ' + 'Otherwise concurrent mode guarantees are off the table.'); + } + } } + } +} - function refreshCache(fiber, seedKey, seedValue) { - // TODO: Consider warning if the refresh is at discrete priority, or if we - // otherwise suspect that it wasn't batched properly. +function mountTransition() { + var stateHook = mountStateImpl(false); // The `start` method never changes. - var provider = fiber.return; + var start = startTransition.bind(null, currentlyRenderingFiber$1, stateHook.queue, true, false); + var hook = mountWorkInProgressHook(); + hook.memoizedState = start; + return [false, start]; +} - while (provider !== null) { - switch (provider.tag) { - case CacheComponent: - case HostRoot: { - // Schedule an update on the cache boundary to trigger a refresh. - var lane = requestUpdateLane(provider); - var refreshUpdate = createUpdate(lane); - var root = enqueueUpdate(provider, refreshUpdate, lane); +function updateTransition() { + var _updateState2 = updateState(), + booleanOrThenable = _updateState2[0]; - if (root !== null) { - scheduleUpdateOnFiber(root, provider, lane); - entangleTransitions(root, provider, lane); - } // TODO: If a refresh never commits, the new cache created here must be - // released. A simple case is start refreshing a cache boundary, but then - // unmount that boundary before the refresh completes. + var hook = updateWorkInProgressHook(); + var start = hook.memoizedState; + var isPending = typeof booleanOrThenable === 'boolean' ? booleanOrThenable : // This will suspend until the async action scope has finished. + useThenable(booleanOrThenable); + return [isPending, start]; +} - var seededCache = createCache(); +function rerenderTransition() { + var _rerenderState = rerenderState(), + booleanOrThenable = _rerenderState[0]; - if (seedKey !== null && seedKey !== undefined && root !== null) { - { - { - error( - "The seed argument is not enabled outside experimental channels." - ); - } - } - } + var hook = updateWorkInProgressHook(); + var start = hook.memoizedState; + var isPending = typeof booleanOrThenable === 'boolean' ? booleanOrThenable : // This will suspend until the async action scope has finished. + useThenable(booleanOrThenable); + return [isPending, start]; +} - var payload = { - cache: seededCache - }; - refreshUpdate.payload = payload; - return; - } - } +function useHostTransitionStatus() { - provider = provider.return; - } // TODO: Warn if unmounted? - } + var status = readContext(HostTransitionContext); + return status !== null ? status : NotPendingTransition; +} - function dispatchReducerAction(fiber, queue, action) { - { - if (typeof arguments[3] === "function") { - error( - "State updates from the useState() and useReducer() Hooks don't support the " + - "second callback argument. To execute a side effect after " + - "rendering, declare it in the component body with useEffect()." - ); - } - } +function mountId() { + var hook = mountWorkInProgressHook(); + var root = getWorkInProgressRoot(); // TODO: In Fizz, id generation is specific to each server config. Maybe we + // should do this in Fiber, too? Deferring this decision for now because + // there's no other place to store the prefix except for an internal field on + // the public createRoot object, which the fiber tree does not currently have + // a reference to. + + var identifierPrefix = root.identifierPrefix; + var id; + + { + // Use a lowercase r prefix for client-generated ids. + var globalClientId = globalClientIdCounter++; + id = ':' + identifierPrefix + 'r' + globalClientId.toString(32) + ':'; + } + + hook.memoizedState = id; + return id; +} - var lane = requestUpdateLane(fiber); - var update = { - lane: lane, - revertLane: NoLane, - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; +function updateId() { + var hook = updateWorkInProgressHook(); + var id = hook.memoizedState; + return id; +} - if (isRenderPhaseUpdate(fiber)) { - enqueueRenderPhaseUpdate(queue, update); - } else { - var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); +function mountRefresh() { + var hook = mountWorkInProgressHook(); + var refresh = hook.memoizedState = refreshCache.bind(null, currentlyRenderingFiber$1); + return refresh; +} - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitionUpdate(root, queue, lane); - } - } +function updateRefresh() { + var hook = updateWorkInProgressHook(); + return hook.memoizedState; +} - markUpdateInDevTools(fiber, lane); - } +function refreshCache(fiber, seedKey, seedValue) { + // TODO: Consider warning if the refresh is at discrete priority, or if we + // otherwise suspect that it wasn't batched properly. - function dispatchSetState(fiber, queue, action) { - { - if (typeof arguments[3] === "function") { - error( - "State updates from the useState() and useReducer() Hooks don't support the " + - "second callback argument. To execute a side effect after " + - "rendering, declare it in the component body with useEffect()." - ); - } - } - var lane = requestUpdateLane(fiber); - var update = { - lane: lane, - revertLane: NoLane, - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; + var provider = fiber.return; - if (isRenderPhaseUpdate(fiber)) { - enqueueRenderPhaseUpdate(queue, update); - } else { - var alternate = fiber.alternate; + while (provider !== null) { + switch (provider.tag) { + case CacheComponent: + case HostRoot: + { + // Schedule an update on the cache boundary to trigger a refresh. + var lane = requestUpdateLane(provider); + var refreshUpdate = createUpdate(lane); + var root = enqueueUpdate(provider, refreshUpdate, lane); - if ( - fiber.lanes === NoLanes && - (alternate === null || alternate.lanes === NoLanes) - ) { - // The queue is currently empty, which means we can eagerly compute the - // next state before entering the render phase. If the new state is the - // same as the current state, we may be able to bail out entirely. - var lastRenderedReducer = queue.lastRenderedReducer; + if (root !== null) { + scheduleUpdateOnFiber(root, provider, lane); + entangleTransitions(root, provider, lane); + } // TODO: If a refresh never commits, the new cache created here must be + // released. A simple case is start refreshing a cache boundary, but then + // unmount that boundary before the refresh completes. - if (lastRenderedReducer !== null) { - var prevDispatcher = null; - { - prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = - InvalidNestedHooksDispatcherOnUpdateInDEV; - } + var seededCache = createCache(); - try { - var currentState = queue.lastRenderedState; - var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute - // it, on the update object. If the reducer hasn't changed by the - // time we enter the render phase, then the eager state can be used - // without calling the reducer again. - - update.hasEagerState = true; - update.eagerState = eagerState; - - if (objectIs(eagerState, currentState)) { - // Fast path. We can bail out without scheduling React to re-render. - // It's still possible that we'll need to rebase this update later, - // if the component re-renders for a different reason and by that - // time the reducer has changed. - // TODO: Do we still need to entangle transitions in this case? - enqueueConcurrentHookUpdateAndEagerlyBailout( - fiber, - queue, - update - ); - return; - } - } catch (error) { - // Suppress the error. It will throw again in the render phase. - } finally { + if (seedKey !== null && seedKey !== undefined && root !== null) { + { { - ReactSharedInternals.H = prevDispatcher; + error('The seed argument is not enabled outside experimental channels.'); } } } + + var payload = { + cache: seededCache + }; + refreshUpdate.payload = payload; + return; } + } - var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); + provider = provider.return; + } // TODO: Warn if unmounted? - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitionUpdate(root, queue, lane); - } - } +} - markUpdateInDevTools(fiber, lane); +function dispatchReducerAction(fiber, queue, action) { + { + if (typeof arguments[3] === 'function') { + error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().'); } + } - function dispatchOptimisticSetState( - fiber, - throwIfDuringRender, - queue, - action - ) { - var transition = requestCurrentTransition(); + var lane = requestUpdateLane(fiber); + var update = { + lane: lane, + revertLane: NoLane, + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; - { - if (transition === null) { - // An optimistic update occurred, but startTransition is not on the stack. - // There are two likely scenarios. - // One possibility is that the optimistic update is triggered by a regular - // event handler (e.g. `onSubmit`) instead of an action. This is a mistake - // and we will warn. - // The other possibility is the optimistic update is inside an async - // action, but after an `await`. In this case, we can make it "just work" - // by associating the optimistic update with the pending async action. - // Technically it's possible that the optimistic update is unrelated to - // the pending action, but we don't have a way of knowing this for sure - // because browsers currently do not provide a way to track async scope. - // (The AsyncContext proposal, if it lands, will solve this in the - // future.) However, this is no different than the problem of unrelated - // transitions being grouped together — it's not wrong per se, but it's - // not ideal. - // Once AsyncContext starts landing in browsers, we will provide better - // warnings in development for these cases. - if (peekEntangledActionLane() !== NoLane); - else { - // There's no pending async action. The most likely cause is that we're - // inside a regular event handler (e.g. onSubmit) instead of an action. - error( - "An optimistic state update occurred outside a transition or " + - "action. To fix, move the update to an action, or wrap " + - "with startTransition." - ); - } - } - } + if (isRenderPhaseUpdate(fiber)) { + enqueueRenderPhaseUpdate(queue, update); + } else { + var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - var update = { - // An optimistic update commits synchronously. - lane: SyncLane, - // After committing, the optimistic update is "reverted" using the same - // lane as the transition it's associated with. - revertLane: requestTransitionLane(), - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitionUpdate(root, queue, lane); + } + } - if (isRenderPhaseUpdate(fiber)) { - // When calling startTransition during render, this warns instead of - // throwing because throwing would be a breaking change. setOptimisticState - // is a new API so it's OK to throw. - if (throwIfDuringRender) { - throw new Error("Cannot update optimistic state while rendering."); - } else { - // startTransition was called during render. We don't need to do anything - // besides warn here because the render phase update would be overidden by - // the second update, anyway. We can remove this branch and make it throw - // in a future release. - { - error("Cannot call startTransition while rendering."); - } + markUpdateInDevTools(fiber, lane); +} + +function dispatchSetState(fiber, queue, action) { + { + if (typeof arguments[3] === 'function') { + error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().'); + } + } + + var lane = requestUpdateLane(fiber); + var update = { + lane: lane, + revertLane: NoLane, + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; + + if (isRenderPhaseUpdate(fiber)) { + enqueueRenderPhaseUpdate(queue, update); + } else { + var alternate = fiber.alternate; + + if (fiber.lanes === NoLanes && (alternate === null || alternate.lanes === NoLanes)) { + // The queue is currently empty, which means we can eagerly compute the + // next state before entering the render phase. If the new state is the + // same as the current state, we may be able to bail out entirely. + var lastRenderedReducer = queue.lastRenderedReducer; + + if (lastRenderedReducer !== null) { + var prevDispatcher = null; + + { + prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; } - } else { - var root = enqueueConcurrentHookUpdate(fiber, queue, update, SyncLane); - if (root !== null) { - // NOTE: The optimistic update implementation assumes that the transition - // will never be attempted before the optimistic update. This currently - // holds because the optimistic update is always synchronous. If we ever - // change that, we'll need to account for this. - scheduleUpdateOnFiber(root, fiber, SyncLane); // Optimistic updates are always synchronous, so we don't need to call - // entangleTransitionUpdate here. + try { + var currentState = queue.lastRenderedState; + var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute + // it, on the update object. If the reducer hasn't changed by the + // time we enter the render phase, then the eager state can be used + // without calling the reducer again. + + update.hasEagerState = true; + update.eagerState = eagerState; + + if (objectIs(eagerState, currentState)) { + // Fast path. We can bail out without scheduling React to re-render. + // It's still possible that we'll need to rebase this update later, + // if the component re-renders for a different reason and by that + // time the reducer has changed. + // TODO: Do we still need to entangle transitions in this case? + enqueueConcurrentHookUpdateAndEagerlyBailout(fiber, queue, update); + return; + } + } catch (error) {// Suppress the error. It will throw again in the render phase. + } finally { + { + ReactSharedInternals.H = prevDispatcher; + } } } - - markUpdateInDevTools(fiber, SyncLane); } - function isRenderPhaseUpdate(fiber) { - var alternate = fiber.alternate; - return ( - fiber === currentlyRenderingFiber$1 || - (alternate !== null && alternate === currentlyRenderingFiber$1) - ); - } + var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - function enqueueRenderPhaseUpdate(queue, update) { - // This is a render phase update. Stash it in a lazily-created map of - // queue -> linked list of updates. After this render pass, we'll restart - // and apply the stashed updates on top of the work-in-progress hook. - didScheduleRenderPhaseUpdateDuringThisPass = - didScheduleRenderPhaseUpdate = true; - var pending = queue.pending; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitionUpdate(root, queue, lane); + } + } - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + markUpdateInDevTools(fiber, lane); +} - queue.pending = update; - } // TODO: Move to ReactFiberConcurrentUpdates? +function dispatchOptimisticSetState(fiber, throwIfDuringRender, queue, action) { + var transition = requestCurrentTransition(); + + { + if (transition === null) { + // An optimistic update occurred, but startTransition is not on the stack. + // There are two likely scenarios. + // One possibility is that the optimistic update is triggered by a regular + // event handler (e.g. `onSubmit`) instead of an action. This is a mistake + // and we will warn. + // The other possibility is the optimistic update is inside an async + // action, but after an `await`. In this case, we can make it "just work" + // by associating the optimistic update with the pending async action. + // Technically it's possible that the optimistic update is unrelated to + // the pending action, but we don't have a way of knowing this for sure + // because browsers currently do not provide a way to track async scope. + // (The AsyncContext proposal, if it lands, will solve this in the + // future.) However, this is no different than the problem of unrelated + // transitions being grouped together — it's not wrong per se, but it's + // not ideal. + // Once AsyncContext starts landing in browsers, we will provide better + // warnings in development for these cases. + if (peekEntangledActionLane() !== NoLane) ; else { + // There's no pending async action. The most likely cause is that we're + // inside a regular event handler (e.g. onSubmit) instead of an action. + error('An optimistic state update occurred outside a transition or ' + 'action. To fix, move the update to an action, or wrap ' + 'with startTransition.'); + } + } + } + + var update = { + // An optimistic update commits synchronously. + lane: SyncLane, + // After committing, the optimistic update is "reverted" using the same + // lane as the transition it's associated with. + revertLane: requestTransitionLane(), + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; + + if (isRenderPhaseUpdate(fiber)) { + // When calling startTransition during render, this warns instead of + // throwing because throwing would be a breaking change. setOptimisticState + // is a new API so it's OK to throw. + if (throwIfDuringRender) { + throw new Error('Cannot update optimistic state while rendering.'); + } else { + // startTransition was called during render. We don't need to do anything + // besides warn here because the render phase update would be overidden by + // the second update, anyway. We can remove this branch and make it throw + // in a future release. + { + error('Cannot call startTransition while rendering.'); + } + } + } else { + var root = enqueueConcurrentHookUpdate(fiber, queue, update, SyncLane); + + if (root !== null) { + // NOTE: The optimistic update implementation assumes that the transition + // will never be attempted before the optimistic update. This currently + // holds because the optimistic update is always synchronous. If we ever + // change that, we'll need to account for this. + scheduleUpdateOnFiber(root, fiber, SyncLane); // Optimistic updates are always synchronous, so we don't need to call + // entangleTransitionUpdate here. + } + } + + markUpdateInDevTools(fiber, SyncLane); +} - function entangleTransitionUpdate(root, queue, lane) { - if (isTransitionLane(lane)) { - var queueLanes = queue.lanes; // If any entangled lanes are no longer pending on the root, then they - // must have finished. We can remove them from the shared queue, which - // represents a superset of the actually pending lanes. In some cases we - // may entangle more than we need to, but that's OK. In fact it's worse if - // we *don't* entangle when we should. +function isRenderPhaseUpdate(fiber) { + var alternate = fiber.alternate; + return fiber === currentlyRenderingFiber$1 || alternate !== null && alternate === currentlyRenderingFiber$1; +} - queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. +function enqueueRenderPhaseUpdate(queue, update) { + // This is a render phase update. Stash it in a lazily-created map of + // queue -> linked list of updates. After this render pass, we'll restart + // and apply the stashed updates on top of the work-in-progress hook. + didScheduleRenderPhaseUpdateDuringThisPass = didScheduleRenderPhaseUpdate = true; + var pending = queue.pending; + + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } + + queue.pending = update; +} // TODO: Move to ReactFiberConcurrentUpdates? + + +function entangleTransitionUpdate(root, queue, lane) { + if (isTransitionLane(lane)) { + var queueLanes = queue.lanes; // If any entangled lanes are no longer pending on the root, then they + // must have finished. We can remove them from the shared queue, which + // represents a superset of the actually pending lanes. In some cases we + // may entangle more than we need to, but that's OK. In fact it's worse if + // we *don't* entangle when we should. + + queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + + var newQueueLanes = mergeLanes(queueLanes, lane); + queue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if + // the lane finished since the last time we entangled it. So we need to + // entangle it again, just to be sure. + + markRootEntangled(root, newQueueLanes); + } +} - var newQueueLanes = mergeLanes(queueLanes, lane); - queue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if - // the lane finished since the last time we entangled it. So we need to - // entangle it again, just to be sure. +function markUpdateInDevTools(fiber, lane, action) { - markRootEntangled(root, newQueueLanes); - } - } + { + markStateUpdateScheduled(fiber, lane); + } +} - function markUpdateInDevTools(fiber, lane, action) { - { - markStateUpdateScheduled(fiber, lane); - } - } - - var ContextOnlyDispatcher = { - readContext: readContext, - use: use, - useCallback: throwInvalidHookError, - useContext: throwInvalidHookError, - useEffect: throwInvalidHookError, - useImperativeHandle: throwInvalidHookError, - useLayoutEffect: throwInvalidHookError, - useInsertionEffect: throwInvalidHookError, - useMemo: throwInvalidHookError, - useReducer: throwInvalidHookError, - useRef: throwInvalidHookError, - useState: throwInvalidHookError, - useDebugValue: throwInvalidHookError, - useDeferredValue: throwInvalidHookError, - useTransition: throwInvalidHookError, - useSyncExternalStore: throwInvalidHookError, - useId: throwInvalidHookError - }; +var ContextOnlyDispatcher = { + readContext: readContext, + use: use, + useCallback: throwInvalidHookError, + useContext: throwInvalidHookError, + useEffect: throwInvalidHookError, + useImperativeHandle: throwInvalidHookError, + useLayoutEffect: throwInvalidHookError, + useInsertionEffect: throwInvalidHookError, + useMemo: throwInvalidHookError, + useReducer: throwInvalidHookError, + useRef: throwInvalidHookError, + useState: throwInvalidHookError, + useDebugValue: throwInvalidHookError, + useDeferredValue: throwInvalidHookError, + useTransition: throwInvalidHookError, + useSyncExternalStore: throwInvalidHookError, + useId: throwInvalidHookError +}; + +{ + ContextOnlyDispatcher.useCacheRefresh = throwInvalidHookError; +} - { - ContextOnlyDispatcher.useCacheRefresh = throwInvalidHookError; - } +{ + ContextOnlyDispatcher.useMemoCache = throwInvalidHookError; +} - { - ContextOnlyDispatcher.useMemoCache = throwInvalidHookError; - } +{ + ContextOnlyDispatcher.useHostTransitionStatus = throwInvalidHookError; + ContextOnlyDispatcher.useFormState = throwInvalidHookError; + ContextOnlyDispatcher.useActionState = throwInvalidHookError; +} - { - ContextOnlyDispatcher.useHostTransitionStatus = throwInvalidHookError; - ContextOnlyDispatcher.useFormState = throwInvalidHookError; - ContextOnlyDispatcher.useActionState = throwInvalidHookError; - } +{ + ContextOnlyDispatcher.useOptimistic = throwInvalidHookError; +} - { - ContextOnlyDispatcher.useOptimistic = throwInvalidHookError; - } +var HooksDispatcherOnMountInDEV = null; +var HooksDispatcherOnMountWithHookTypesInDEV = null; +var HooksDispatcherOnUpdateInDEV = null; +var HooksDispatcherOnRerenderInDEV = null; +var InvalidNestedHooksDispatcherOnMountInDEV = null; +var InvalidNestedHooksDispatcherOnUpdateInDEV = null; +var InvalidNestedHooksDispatcherOnRerenderInDEV = null; + +{ + var warnInvalidContextAccess = function () { + error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + }; + + var warnInvalidHookAccess = function () { + error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://react.dev/link/rules-of-hooks'); + }; + + HooksDispatcherOnMountInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + mountHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - var HooksDispatcherOnMountInDEV = null; - var HooksDispatcherOnMountWithHookTypesInDEV = null; - var HooksDispatcherOnUpdateInDEV = null; - var HooksDispatcherOnRerenderInDEV = null; - var InvalidNestedHooksDispatcherOnMountInDEV = null; - var InvalidNestedHooksDispatcherOnUpdateInDEV = null; - var InvalidNestedHooksDispatcherOnRerenderInDEV = null; + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - { - var warnInvalidContextAccess = function () { - error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - }; + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + mountHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - var warnInvalidHookAccess = function () { - error( - "Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. " + - "You can only call Hooks at the top level of your React function. " + - "For more information, see " + - "https://react.dev/link/rules-of-hooks" - ); - }; + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + mountHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + mountHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + mountHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + mountHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + mountHookTypesDev(); + return mountId(); + } + }; + + { + HooksDispatcherOnMountInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + mountHookTypesDev(); + return mountRefresh(); + }; + } - HooksDispatcherOnMountInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - mountHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + { + HooksDispatcherOnMountInDEV.useMemoCache = useMemoCache; + } - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + { + HooksDispatcherOnMountInDEV.useHostTransitionStatus = useHostTransitionStatus; - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - mountHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + HooksDispatcherOnMountInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + mountHookTypesDev(); + return mountActionState(action, initialState); + }; - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - mountHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - mountHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - mountHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - mountHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - mountHookTypesDev(); - return mountId(); - } - }; + HooksDispatcherOnMountInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + mountHookTypesDev(); + return mountActionState(action, initialState); + }; + } - { - HooksDispatcherOnMountInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - mountHookTypesDev(); - return mountRefresh(); - }; - } + { + HooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + mountHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + HooksDispatcherOnMountWithHookTypesInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - { - HooksDispatcherOnMountInDEV.useMemoCache = useMemoCache; + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - { - HooksDispatcherOnMountInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnMountInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - mountHookTypesDev(); - return mountActionState(action, initialState); - }; + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - HooksDispatcherOnMountInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - mountHookTypesDev(); - return mountActionState(action, initialState); - }; - } + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return mountId(); + } + }; + + { + HooksDispatcherOnMountWithHookTypesInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return mountRefresh(); + }; + } - { - HooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - mountHookTypesDev(); - return mountOptimistic(passthrough); - }; - } + { + HooksDispatcherOnMountWithHookTypesInDEV.useMemoCache = useMemoCache; + } - HooksDispatcherOnMountWithHookTypesInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + { + HooksDispatcherOnMountWithHookTypesInDEV.useHostTransitionStatus = useHostTransitionStatus; - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + HooksDispatcherOnMountWithHookTypesInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return mountActionState(action, initialState); + }; - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + HooksDispatcherOnMountWithHookTypesInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return mountActionState(action, initialState); + }; + } - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return mountId(); - } - }; + { + HooksDispatcherOnMountWithHookTypesInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + HooksDispatcherOnUpdateInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - { - HooksDispatcherOnMountWithHookTypesInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return mountRefresh(); - }; + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - { - HooksDispatcherOnMountWithHookTypesInDEV.useMemoCache = useMemoCache; - } + try { + return updateReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - { - HooksDispatcherOnMountWithHookTypesInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnMountWithHookTypesInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return mountActionState(action, initialState); - }; + try { + return updateState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return updateDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return updateTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return updateId(); + } + }; + + { + HooksDispatcherOnUpdateInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - HooksDispatcherOnMountWithHookTypesInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return mountActionState(action, initialState); - }; - } + { + HooksDispatcherOnUpdateInDEV.useMemoCache = useMemoCache; + } - { - HooksDispatcherOnMountWithHookTypesInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return mountOptimistic(passthrough); - }; + { + HooksDispatcherOnUpdateInDEV.useHostTransitionStatus = useHostTransitionStatus; + + HooksDispatcherOnUpdateInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return updateActionState(action); + }; + + HooksDispatcherOnUpdateInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return updateActionState(action); + }; + } + + { + HooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return updateOptimistic(passthrough, reducer); + }; + } + + HooksDispatcherOnRerenderInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; - HooksDispatcherOnUpdateInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + try { + return rerenderReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + try { + return rerenderState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return rerenderDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return rerenderTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return updateId(); + } + }; + + { + HooksDispatcherOnRerenderInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - try { - return updateReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + { + HooksDispatcherOnRerenderInDEV.useMemoCache = useMemoCache; + } - try { - return updateState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return updateDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return updateTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return updateId(); - } - }; + { + HooksDispatcherOnRerenderInDEV.useHostTransitionStatus = useHostTransitionStatus; - { - HooksDispatcherOnUpdateInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; + HooksDispatcherOnRerenderInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return rerenderActionState(action); + }; + + HooksDispatcherOnRerenderInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return rerenderActionState(action); + }; + } + + { + HooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return rerenderOptimistic(passthrough, reducer); + }; + } + + InvalidNestedHooksDispatcherOnMountInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - { - HooksDispatcherOnUpdateInDEV.useMemoCache = useMemoCache; + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountId(); + } + }; + + { + InvalidNestedHooksDispatcherOnMountInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + mountHookTypesDev(); + return mountRefresh(); + }; + } + + { + InvalidNestedHooksDispatcherOnMountInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } + + { + InvalidNestedHooksDispatcherOnMountInDEV.useHostTransitionStatus = useHostTransitionStatus; + + InvalidNestedHooksDispatcherOnMountInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountActionState(action, initialState); + }; + + InvalidNestedHooksDispatcherOnMountInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountActionState(action, initialState); + }; + } + + { + InvalidNestedHooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + InvalidNestedHooksDispatcherOnUpdateInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - { - HooksDispatcherOnUpdateInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnUpdateInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return updateActionState(action); - }; + try { + return updateReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - HooksDispatcherOnUpdateInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return updateActionState(action); - }; + try { + return updateState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateId(); + } + }; + + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } + + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } + + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useHostTransitionStatus = useHostTransitionStatus; + + InvalidNestedHooksDispatcherOnUpdateInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateActionState(action); + }; + + InvalidNestedHooksDispatcherOnUpdateInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateActionState(action); + }; + } + + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateOptimistic(passthrough, reducer); + }; + } + + InvalidNestedHooksDispatcherOnRerenderInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - { - HooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return updateOptimistic(passthrough, reducer); - }; + try { + return rerenderReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + + try { + return rerenderState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateId(); + } + }; + + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } + + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } + + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useHostTransitionStatus = useHostTransitionStatus; + + InvalidNestedHooksDispatcherOnRerenderInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderActionState(action); + }; + + InvalidNestedHooksDispatcherOnRerenderInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderActionState(action); + }; + } + + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderOptimistic(passthrough, reducer); + }; + } +} + +var now = Scheduler$1.unstable_now; +var commitTime = 0; +var layoutEffectStartTime = -1; +var profilerStartTime = -1; +var passiveEffectStartTime = -1; +/** + * Tracks whether the current update was a nested/cascading update (scheduled from a layout effect). + * + * The overall sequence is: + * 1. render + * 2. commit (and call `onRender`, `onCommit`) + * 3. check for nested updates + * 4. flush passive effects (and call `onPostCommit`) + * + * Nested updates are identified in step 3 above, + * but step 4 still applies to the work that was just committed. + * We use two flags to track nested updates then: + * one tracks whether the upcoming update is a nested update, + * and the other tracks whether the current update was a nested update. + * The first value gets synced to the second at the start of the render phase. + */ + +var currentUpdateIsNested = false; +var nestedUpdateScheduled = false; + +function isCurrentUpdateNested() { + return currentUpdateIsNested; +} + +function markNestedUpdateScheduled() { + { + nestedUpdateScheduled = true; + } +} + +function resetNestedUpdateFlag() { + { + currentUpdateIsNested = false; + nestedUpdateScheduled = false; + } +} + +function syncNestedUpdateFlag() { + { + currentUpdateIsNested = nestedUpdateScheduled; + nestedUpdateScheduled = false; + } +} + +function getCommitTime() { + return commitTime; +} + +function recordCommitTime() { + + commitTime = now(); +} + +function startProfilerTimer(fiber) { + + profilerStartTime = now(); + + if (fiber.actualStartTime < 0) { + fiber.actualStartTime = now(); + } +} + +function stopProfilerTimerIfRunning(fiber) { + + profilerStartTime = -1; +} + +function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) { + + if (profilerStartTime >= 0) { + var elapsedTime = now() - profilerStartTime; + fiber.actualDuration += elapsedTime; + + if (overrideBaseTime) { + fiber.selfBaseDuration = elapsedTime; + } + + profilerStartTime = -1; + } +} + +function recordLayoutEffectDuration(fiber) { + + if (layoutEffectStartTime >= 0) { + var elapsedTime = now() - layoutEffectStartTime; + layoutEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor + // Or the root (for the DevTools Profiler to read) + + var parentFiber = fiber.return; + + while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + root.effectDuration += elapsedTime; + return; + + case Profiler: + var parentStateNode = parentFiber.stateNode; + parentStateNode.effectDuration += elapsedTime; + return; } - HooksDispatcherOnRerenderInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + parentFiber = parentFiber.return; + } + } +} + +function recordPassiveEffectDuration(fiber) { - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + if (passiveEffectStartTime >= 0) { + var elapsedTime = now() - passiveEffectStartTime; + passiveEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor + // Or the root (for the DevTools Profiler to read) - try { - return rerenderReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; + var parentFiber = fiber.return; + + while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + + if (root !== null) { + root.passiveEffectDuration += elapsedTime; } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; - try { - return rerenderState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; + return; + + case Profiler: + var parentStateNode = parentFiber.stateNode; + + if (parentStateNode !== null) { + // Detached fibers have their state node cleared out. + // In this case, the return pointer is also cleared out, + // so we won't be able to report the time spent in this Profiler's subtree. + parentStateNode.passiveEffectDuration += elapsedTime; } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return rerenderDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return rerenderTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return updateId(); - } - }; - { - HooksDispatcherOnRerenderInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; + return; } - { - HooksDispatcherOnRerenderInDEV.useMemoCache = useMemoCache; - } + parentFiber = parentFiber.return; + } + } +} - { - HooksDispatcherOnRerenderInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnRerenderInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return rerenderActionState(action); - }; +function startLayoutEffectTimer() { - HooksDispatcherOnRerenderInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return rerenderActionState(action); - }; - } + layoutEffectStartTime = now(); +} - { - HooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return rerenderOptimistic(passthrough, reducer); - }; - } +function startPassiveEffectTimer() { - InvalidNestedHooksDispatcherOnMountInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + passiveEffectStartTime = now(); +} - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; +function transferActualDuration(fiber) { + // Transfer time spent rendering these children so we don't lose it + // after we rerender. This is used as a helper in special cases + // where we should count the work of multiple passes. + var child = fiber.child; + + while (child) { + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + fiber.actualDuration += child.actualDuration; + child = child.sibling; + } +} - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; +var fakeInternalInstance = {}; +var didWarnAboutStateAssignmentForComponent; +var didWarnAboutUninitializedState; +var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate; +var didWarnAboutLegacyLifecyclesAndDerivedState; +var didWarnAboutUndefinedDerivedState; +var didWarnAboutDirectlyAssigningPropsToState; +var didWarnAboutContextTypeAndContextTypes; +var didWarnAboutInvalidateContextType; +var didWarnOnInvalidCallback; + +{ + didWarnAboutStateAssignmentForComponent = new Set(); + didWarnAboutUninitializedState = new Set(); + didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set(); + didWarnAboutLegacyLifecyclesAndDerivedState = new Set(); + didWarnAboutDirectlyAssigningPropsToState = new Set(); + didWarnAboutUndefinedDerivedState = new Set(); + didWarnAboutContextTypeAndContextTypes = new Set(); + didWarnAboutInvalidateContextType = new Set(); + didWarnOnInvalidCallback = new Set(); // This is so gross but it's at least non-critical and can be removed if + // it causes problems. This is meant to give a nicer error message for + // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component, + // ...)) which otherwise throws a "_processChildContext is not a function" + // exception. + + Object.defineProperty(fakeInternalInstance, '_processChildContext', { + enumerable: false, + value: function () { + throw new Error('_processChildContext is not available in React 16+. This likely ' + 'means you have multiple copies of React and are attempting to nest ' + 'a React 15 tree inside a React 16 tree using ' + "unstable_renderSubtreeIntoContainer, which isn't supported. Try " + 'to make sure you have only one copy of React (and ideally, switch ' + 'to ReactDOM.createPortal).'); + } + }); + Object.freeze(fakeInternalInstance); +} - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountId(); - } - }; +function warnOnInvalidCallback(callback) { + { + if (callback === null || typeof callback === 'function') { + return; + } // eslint-disable-next-line react-internal/safe-string-coercion - { - InvalidNestedHooksDispatcherOnMountInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - mountHookTypesDev(); - return mountRefresh(); - }; + + var key = String(callback); + + if (!didWarnOnInvalidCallback.has(key)) { + didWarnOnInvalidCallback.add(key); + + error('Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback); + } + } +} + +function warnOnUndefinedDerivedState(type, partialState) { + { + if (partialState === undefined) { + var componentName = getComponentNameFromType(type) || 'Component'; + + if (!didWarnAboutUndefinedDerivedState.has(componentName)) { + didWarnAboutUndefinedDerivedState.add(componentName); + + error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', componentName); } + } + } +} + +function applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, nextProps) { + var prevState = workInProgress.memoizedState; + var partialState = getDerivedStateFromProps(nextProps, prevState); + + { + + warnOnUndefinedDerivedState(ctor, partialState); + } // Merge the partial state and the previous state. + + + var memoizedState = partialState === null || partialState === undefined ? prevState : assign({}, prevState, partialState); + workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the + // base state. + if (workInProgress.lanes === NoLanes) { + // Queue is always non-null for classes + var updateQueue = workInProgress.updateQueue; + updateQueue.baseState = memoizedState; + } +} + +var classComponentUpdater = { + isMounted: isMounted, + // $FlowFixMe[missing-local-annot] + enqueueSetState: function (inst, payload, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.payload = payload; + + if (callback !== undefined && callback !== null) { { - InvalidNestedHooksDispatcherOnMountInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; + warnOnInvalidCallback(callback); } - { - InvalidNestedHooksDispatcherOnMountInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - InvalidNestedHooksDispatcherOnMountInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountActionState(action, initialState); - }; + update.callback = callback; + } - InvalidNestedHooksDispatcherOnMountInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountActionState(action, initialState); - }; - } + var root = enqueueUpdate(fiber, update, lane); + + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); + } + { + markStateUpdateScheduled(fiber, lane); + } + }, + enqueueReplaceState: function (inst, payload, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.tag = ReplaceState; + update.payload = payload; + + if (callback !== undefined && callback !== null) { { - InvalidNestedHooksDispatcherOnMountInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountOptimistic(passthrough); - }; + warnOnInvalidCallback(callback); } - InvalidNestedHooksDispatcherOnUpdateInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + update.callback = callback; + } - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + var root = enqueueUpdate(fiber, update, lane); - try { - return updateReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); + } - try { - return updateState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateId(); - } - }; + { + markStateUpdateScheduled(fiber, lane); + } + }, + // $FlowFixMe[missing-local-annot] + enqueueForceUpdate: function (inst, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.tag = ForceUpdate; + if (callback !== undefined && callback !== null) { { - InvalidNestedHooksDispatcherOnUpdateInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; + warnOnInvalidCallback(callback); } - { - InvalidNestedHooksDispatcherOnUpdateInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; + update.callback = callback; + } + + var root = enqueueUpdate(fiber, update, lane); + + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); + } + + { + markForceUpdateScheduled(fiber, lane); + } + } +}; + +function checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) { + var instance = workInProgress.stateNode; + + if (typeof instance.shouldComponentUpdate === 'function') { + var shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext); + + { + + if (shouldUpdate === undefined) { + error('%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', getComponentNameFromType(ctor) || 'Component'); } + } - { - InvalidNestedHooksDispatcherOnUpdateInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - InvalidNestedHooksDispatcherOnUpdateInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateActionState(action); - }; + return shouldUpdate; + } - InvalidNestedHooksDispatcherOnUpdateInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateActionState(action); - }; - } + if (ctor.prototype && ctor.prototype.isPureReactComponent) { + return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState); + } - { - InvalidNestedHooksDispatcherOnUpdateInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateOptimistic(passthrough, reducer); - }; + return true; +} + +function checkClassInstance(workInProgress, ctor, newProps) { + var instance = workInProgress.stateNode; + + { + var name = getComponentNameFromType(ctor) || 'Component'; + var renderPresent = instance.render; + + if (!renderPresent) { + if (ctor.prototype && typeof ctor.prototype.render === 'function') { + error('No `render` method found on the %s ' + 'instance: did you accidentally return an object from the constructor?', name); + } else { + error('No `render` method found on the %s ' + 'instance: you may have forgotten to define `render`.', name); } + } - InvalidNestedHooksDispatcherOnRerenderInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (instance.getInitialState && !instance.getInitialState.isReactClassApproved && !instance.state) { + error('getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name); + } - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (instance.getDefaultProps && !instance.getDefaultProps.isReactClassApproved) { + error('getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name); + } - try { - return rerenderReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (instance.propTypes) { + error('propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name); + } - try { - return rerenderState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateId(); - } - }; + if (instance.contextType) { + error('contextType was defined as an instance property on %s. Use a static ' + 'property to define contextType instead.', name); + } - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; + { + if (instance.contextTypes) { + error('contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name); } - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; + if (ctor.contextType && ctor.contextTypes && !didWarnAboutContextTypeAndContextTypes.has(ctor)) { + didWarnAboutContextTypeAndContextTypes.add(ctor); + + error('%s declares both contextTypes and contextType static properties. ' + 'The legacy contextTypes property will be ignored.', name); } + } - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - InvalidNestedHooksDispatcherOnRerenderInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderActionState(action); - }; + if (typeof instance.componentShouldUpdate === 'function') { + error('%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name); + } - InvalidNestedHooksDispatcherOnRerenderInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderActionState(action); - }; - } + if (ctor.prototype && ctor.prototype.isPureReactComponent && typeof instance.shouldComponentUpdate !== 'undefined') { + error('%s has a method called shouldComponentUpdate(). ' + 'shouldComponentUpdate should not be used when extending React.PureComponent. ' + 'Please extend React.Component if shouldComponentUpdate is used.', getComponentNameFromType(ctor) || 'A pure component'); + } - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderOptimistic(passthrough, reducer); - }; - } + if (typeof instance.componentDidUnmount === 'function') { + error('%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name); } - var now = Scheduler$1.unstable_now; - var commitTime = 0; - var layoutEffectStartTime = -1; - var profilerStartTime = -1; - var passiveEffectStartTime = -1; - /** - * Tracks whether the current update was a nested/cascading update (scheduled from a layout effect). - * - * The overall sequence is: - * 1. render - * 2. commit (and call `onRender`, `onCommit`) - * 3. check for nested updates - * 4. flush passive effects (and call `onPostCommit`) - * - * Nested updates are identified in step 3 above, - * but step 4 still applies to the work that was just committed. - * We use two flags to track nested updates then: - * one tracks whether the upcoming update is a nested update, - * and the other tracks whether the current update was a nested update. - * The first value gets synced to the second at the start of the render phase. - */ - - var currentUpdateIsNested = false; - var nestedUpdateScheduled = false; - - function isCurrentUpdateNested() { - return currentUpdateIsNested; - } - - function markNestedUpdateScheduled() { - { - nestedUpdateScheduled = true; - } + if (typeof instance.componentDidReceiveProps === 'function') { + error('%s has a method called ' + 'componentDidReceiveProps(). But there is no such lifecycle method. ' + 'If you meant to update the state in response to changing props, ' + 'use componentWillReceiveProps(). If you meant to fetch data or ' + 'run side-effects or mutations after React has updated the UI, use componentDidUpdate().', name); } - function resetNestedUpdateFlag() { - { - currentUpdateIsNested = false; - nestedUpdateScheduled = false; - } + if (typeof instance.componentWillRecieveProps === 'function') { + error('%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name); } - function syncNestedUpdateFlag() { - { - currentUpdateIsNested = nestedUpdateScheduled; - nestedUpdateScheduled = false; - } + if (typeof instance.UNSAFE_componentWillRecieveProps === 'function') { + error('%s has a method called ' + 'UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?', name); } - function getCommitTime() { - return commitTime; + var hasMutatedProps = instance.props !== newProps; + + if (instance.props !== undefined && hasMutatedProps) { + error('When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name); } - function recordCommitTime() { - commitTime = now(); + if (instance.defaultProps) { + error('Setting defaultProps as an instance property on %s is not supported and will be ignored.' + ' Instead, define defaultProps as a static property on %s.', name, name); } - function startProfilerTimer(fiber) { - profilerStartTime = now(); + if (typeof instance.getSnapshotBeforeUpdate === 'function' && typeof instance.componentDidUpdate !== 'function' && !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor)) { + didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor); - if (fiber.actualStartTime < 0) { - fiber.actualStartTime = now(); - } + error('%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). ' + 'This component defines getSnapshotBeforeUpdate() only.', getComponentNameFromType(ctor)); + } + + if (typeof instance.getDerivedStateFromProps === 'function') { + error('%s: getDerivedStateFromProps() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name); + } + + if (typeof instance.getDerivedStateFromError === 'function') { + error('%s: getDerivedStateFromError() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name); + } + + if (typeof ctor.getSnapshotBeforeUpdate === 'function') { + error('%s: getSnapshotBeforeUpdate() is defined as a static method ' + 'and will be ignored. Instead, declare it as an instance method.', name); } - function stopProfilerTimerIfRunning(fiber) { - profilerStartTime = -1; + var state = instance.state; + + if (state && (typeof state !== 'object' || isArray(state))) { + error('%s.state: must be set to an object or null', name); } - function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) { - if (profilerStartTime >= 0) { - var elapsedTime = now() - profilerStartTime; - fiber.actualDuration += elapsedTime; + if (typeof instance.getChildContext === 'function' && typeof ctor.childContextTypes !== 'object') { + error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', name); + } + } +} - if (overrideBaseTime) { - fiber.selfBaseDuration = elapsedTime; +function constructClassInstance(workInProgress, ctor, props) { + var isLegacyContextConsumer = false; + var unmaskedContext = emptyContextObject; + var context = emptyContextObject; + var contextType = ctor.contextType; + + { + if ('contextType' in ctor) { + var isValid = // Allow null for conditional declaration + contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE; + + if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) { + didWarnAboutInvalidateContextType.add(ctor); + var addendum = ''; + + if (contextType === undefined) { + addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.'; + } else if (typeof contextType !== 'object') { + addendum = ' However, it is set to a ' + typeof contextType + '.'; + } else if (contextType.$$typeof === REACT_CONSUMER_TYPE) { + addendum = ' Did you accidentally pass the Context.Consumer instead?'; + } else { + addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.'; } - profilerStartTime = -1; + error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentNameFromType(ctor) || 'Component', addendum); } } + } - function recordLayoutEffectDuration(fiber) { - if (layoutEffectStartTime >= 0) { - var elapsedTime = now() - layoutEffectStartTime; - layoutEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor - // Or the root (for the DevTools Profiler to read) + if (typeof contextType === 'object' && contextType !== null) { + context = readContext(contextType); + } else { + unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + var contextTypes = ctor.contextTypes; + isLegacyContextConsumer = contextTypes !== null && contextTypes !== undefined; + context = isLegacyContextConsumer ? getMaskedContext(workInProgress, unmaskedContext) : emptyContextObject; + } - var parentFiber = fiber.return; + var instance = new ctor(props, context); // Instantiate twice to help detect side-effects. - while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; - root.effectDuration += elapsedTime; - return; + var state = workInProgress.memoizedState = instance.state !== null && instance.state !== undefined ? instance.state : null; + instance.updater = classComponentUpdater; + workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates - case Profiler: - var parentStateNode = parentFiber.stateNode; - parentStateNode.effectDuration += elapsedTime; - return; - } + set(instance, workInProgress); - parentFiber = parentFiber.return; - } + { + instance._reactInternalInstance = fakeInternalInstance; + } + + { + if (typeof ctor.getDerivedStateFromProps === 'function' && state === null) { + var componentName = getComponentNameFromType(ctor) || 'Component'; + + if (!didWarnAboutUninitializedState.has(componentName)) { + didWarnAboutUninitializedState.add(componentName); + + error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, instance.state === null ? 'null' : 'undefined', componentName); } - } + } // If new component APIs are defined, "unsafe" lifecycles won't be called. + // Warn about these lifecycles if they are present. + // Don't warn about react-lifecycles-compat polyfilled methods though. - function recordPassiveEffectDuration(fiber) { - if (passiveEffectStartTime >= 0) { - var elapsedTime = now() - passiveEffectStartTime; - passiveEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor - // Or the root (for the DevTools Profiler to read) - var parentFiber = fiber.return; + if (typeof ctor.getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function') { + var foundWillMountName = null; + var foundWillReceivePropsName = null; + var foundWillUpdateName = null; - while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; + if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true) { + foundWillMountName = 'componentWillMount'; + } else if (typeof instance.UNSAFE_componentWillMount === 'function') { + foundWillMountName = 'UNSAFE_componentWillMount'; + } - if (root !== null) { - root.passiveEffectDuration += elapsedTime; - } + if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) { + foundWillReceivePropsName = 'componentWillReceiveProps'; + } else if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + foundWillReceivePropsName = 'UNSAFE_componentWillReceiveProps'; + } - return; + if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) { + foundWillUpdateName = 'componentWillUpdate'; + } else if (typeof instance.UNSAFE_componentWillUpdate === 'function') { + foundWillUpdateName = 'UNSAFE_componentWillUpdate'; + } - case Profiler: - var parentStateNode = parentFiber.stateNode; + if (foundWillMountName !== null || foundWillReceivePropsName !== null || foundWillUpdateName !== null) { + var _componentName = getComponentNameFromType(ctor) || 'Component'; - if (parentStateNode !== null) { - // Detached fibers have their state node cleared out. - // In this case, the return pointer is also cleared out, - // so we won't be able to report the time spent in this Profiler's subtree. - parentStateNode.passiveEffectDuration += elapsedTime; - } + var newApiName = typeof ctor.getDerivedStateFromProps === 'function' ? 'getDerivedStateFromProps()' : 'getSnapshotBeforeUpdate()'; - return; - } + if (!didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName)) { + didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName); - parentFiber = parentFiber.return; + error('Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n' + '%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n' + 'The above lifecycles should be removed. Learn more about this warning here:\n' + 'https://react.dev/link/unsafe-component-lifecycles', _componentName, newApiName, foundWillMountName !== null ? "\n " + foundWillMountName : '', foundWillReceivePropsName !== null ? "\n " + foundWillReceivePropsName : '', foundWillUpdateName !== null ? "\n " + foundWillUpdateName : ''); } } } + } // Cache unmasked context so we can avoid recreating masked context unless necessary. + // ReactFiberContext usually updates this cache but can't for newly-created instances. - function startLayoutEffectTimer() { - layoutEffectStartTime = now(); - } - function startPassiveEffectTimer() { - passiveEffectStartTime = now(); - } + if (isLegacyContextConsumer) { + cacheContext(workInProgress, unmaskedContext, context); + } - function transferActualDuration(fiber) { - // Transfer time spent rendering these children so we don't lose it - // after we rerender. This is used as a helper in special cases - // where we should count the work of multiple passes. - var child = fiber.child; + return instance; +} - while (child) { - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - fiber.actualDuration += child.actualDuration; - child = child.sibling; - } - } +function callComponentWillMount(workInProgress, instance) { + var oldState = instance.state; + + if (typeof instance.componentWillMount === 'function') { + instance.componentWillMount(); + } - var fakeInternalInstance = {}; - var didWarnAboutStateAssignmentForComponent; - var didWarnAboutUninitializedState; - var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate; - var didWarnAboutLegacyLifecyclesAndDerivedState; - var didWarnAboutUndefinedDerivedState; - var didWarnAboutDirectlyAssigningPropsToState; - var didWarnAboutContextTypeAndContextTypes; - var didWarnAboutInvalidateContextType; - var didWarnOnInvalidCallback; + if (typeof instance.UNSAFE_componentWillMount === 'function') { + instance.UNSAFE_componentWillMount(); + } + if (oldState !== instance.state) { { - didWarnAboutStateAssignmentForComponent = new Set(); - didWarnAboutUninitializedState = new Set(); - didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set(); - didWarnAboutLegacyLifecyclesAndDerivedState = new Set(); - didWarnAboutDirectlyAssigningPropsToState = new Set(); - didWarnAboutUndefinedDerivedState = new Set(); - didWarnAboutContextTypeAndContextTypes = new Set(); - didWarnAboutInvalidateContextType = new Set(); - didWarnOnInvalidCallback = new Set(); // This is so gross but it's at least non-critical and can be removed if - // it causes problems. This is meant to give a nicer error message for - // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component, - // ...)) which otherwise throws a "_processChildContext is not a function" - // exception. - - Object.defineProperty(fakeInternalInstance, "_processChildContext", { - enumerable: false, - value: function () { - throw new Error( - "_processChildContext is not available in React 16+. This likely " + - "means you have multiple copies of React and are attempting to nest " + - "a React 15 tree inside a React 16 tree using " + - "unstable_renderSubtreeIntoContainer, which isn't supported. Try " + - "to make sure you have only one copy of React (and ideally, switch " + - "to ReactDOM.createPortal)." - ); - } - }); - Object.freeze(fakeInternalInstance); + error('%s.componentWillMount(): Assigning directly to this.state is ' + "deprecated (except inside a component's " + 'constructor). Use setState instead.', getComponentNameFromFiber(workInProgress) || 'Component'); } - function warnOnInvalidCallback(callback) { - { - if (callback === null || typeof callback === "function") { - return; - } // eslint-disable-next-line react-internal/safe-string-coercion + classComponentUpdater.enqueueReplaceState(instance, instance.state, null); + } +} - var key = String(callback); +function callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext) { + var oldState = instance.state; - if (!didWarnOnInvalidCallback.has(key)) { - didWarnOnInvalidCallback.add(key); + if (typeof instance.componentWillReceiveProps === 'function') { + instance.componentWillReceiveProps(newProps, nextContext); + } - error( - "Expected the last optional `callback` argument to be a " + - "function. Instead received: %s.", - callback - ); - } - } - } + if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + instance.UNSAFE_componentWillReceiveProps(newProps, nextContext); + } - function warnOnUndefinedDerivedState(type, partialState) { - { - if (partialState === undefined) { - var componentName = getComponentNameFromType(type) || "Component"; + if (instance.state !== oldState) { + { + var componentName = getComponentNameFromFiber(workInProgress) || 'Component'; - if (!didWarnAboutUndefinedDerivedState.has(componentName)) { - didWarnAboutUndefinedDerivedState.add(componentName); + if (!didWarnAboutStateAssignmentForComponent.has(componentName)) { + didWarnAboutStateAssignmentForComponent.add(componentName); - error( - "%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. " + - "You have returned undefined.", - componentName - ); - } - } + error('%s.componentWillReceiveProps(): Assigning directly to ' + "this.state is deprecated (except inside a component's " + 'constructor). Use setState instead.', componentName); } } - function applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - nextProps - ) { - var prevState = workInProgress.memoizedState; - var partialState = getDerivedStateFromProps(nextProps, prevState); + classComponentUpdater.enqueueReplaceState(instance, instance.state, null); + } +} // Invokes the mount life-cycles on a previously never rendered instance. - { - warnOnUndefinedDerivedState(ctor, partialState); - } // Merge the partial state and the previous state. - var memoizedState = - partialState === null || partialState === undefined - ? prevState - : assign({}, prevState, partialState); - workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the - // base state. +function mountClassInstance(workInProgress, ctor, newProps, renderLanes) { + { + checkClassInstance(workInProgress, ctor, newProps); + } - if (workInProgress.lanes === NoLanes) { - // Queue is always non-null for classes - var updateQueue = workInProgress.updateQueue; - updateQueue.baseState = memoizedState; + var instance = workInProgress.stateNode; + instance.props = newProps; + instance.state = workInProgress.memoizedState; + instance.refs = {}; + initializeUpdateQueue(workInProgress); + var contextType = ctor.contextType; + + if (typeof contextType === 'object' && contextType !== null) { + instance.context = readContext(contextType); + } else { + var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + instance.context = getMaskedContext(workInProgress, unmaskedContext); + } + + { + if (instance.state === newProps) { + var componentName = getComponentNameFromType(ctor) || 'Component'; + + if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) { + didWarnAboutDirectlyAssigningPropsToState.add(componentName); + + error('%s: It is not recommended to assign props directly to state ' + "because updates to props won't be reflected in state. " + 'In most cases, it is better to use props directly.', componentName); } } - var classComponentUpdater = { - isMounted: isMounted, - // $FlowFixMe[missing-local-annot] - enqueueSetState: function (inst, payload, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.payload = payload; + if (workInProgress.mode & StrictLegacyMode) { + ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, instance); + } - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } + ReactStrictModeWarnings.recordUnsafeLifecycleWarnings(workInProgress, instance); + } - update.callback = callback; - } + instance.state = workInProgress.memoizedState; + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - var root = enqueueUpdate(fiber, update, lane); + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + instance.state = workInProgress.memoizedState; + } // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } - { - markStateUpdateScheduled(fiber, lane); - } - }, - enqueueReplaceState: function (inst, payload, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.tag = ReplaceState; - update.payload = payload; - - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } + if (typeof ctor.getDerivedStateFromProps !== 'function' && typeof instance.getSnapshotBeforeUpdate !== 'function' && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) { + callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's + // process them now. - update.callback = callback; - } + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + instance.state = workInProgress.memoizedState; + } - var root = enqueueUpdate(fiber, update, lane); + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } +} - { - markStateUpdateScheduled(fiber, lane); - } - }, - // $FlowFixMe[missing-local-annot] - enqueueForceUpdate: function (inst, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.tag = ForceUpdate; - - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } +function resumeMountClassInstance(workInProgress, ctor, newProps, renderLanes) { + var instance = workInProgress.stateNode; + var unresolvedOldProps = workInProgress.memoizedProps; + var oldProps = resolveClassComponentProps(ctor, unresolvedOldProps, workInProgress.type === workInProgress.elementType); + instance.props = oldProps; + var oldContext = instance.context; + var contextType = ctor.contextType; + var nextContext = emptyContextObject; + + if (typeof contextType === 'object' && contextType !== null) { + nextContext = readContext(contextType); + } else { + var nextLegacyUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext); + } + + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; + var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // When comparing whether props changed, we should compare using the + // unresolved props object that is stored on the fiber, rather than the + // one that gets assigned to the instance, because that object may have been + // cloned to resolve default props and/or remove `ref`. + + var unresolvedNewProps = workInProgress.pendingProps; + var didReceiveNewProps = unresolvedNewProps !== unresolvedOldProps; // Note: During these life-cycles, instance.props/instance.state are what + // ever the previously attempted to render - not the "current". However, + // during componentDidUpdate we pass the "current" props. + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) { + if (didReceiveNewProps || oldContext !== nextContext) { + callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext); + } + } + + resetHasForceUpdateBeforeProcessing(); + var oldState = workInProgress.memoizedState; + var newState = instance.state = oldState; + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + newState = workInProgress.memoizedState; + + if (!didReceiveNewProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } + + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } + + return false; + } + + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + newState = workInProgress.memoizedState; + } + + var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext); + + if (shouldUpdate) { + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) { + if (typeof instance.componentWillMount === 'function') { + instance.componentWillMount(); + } - update.callback = callback; - } + if (typeof instance.UNSAFE_componentWillMount === 'function') { + instance.UNSAFE_componentWillMount(); + } + } - var root = enqueueUpdate(fiber, update, lane); + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } + } else { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } - { - markForceUpdateScheduled(fiber, lane); - } - } - }; + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } // If shouldComponentUpdate returned false, we should still update the + // memoized state to indicate that this work can be reused. - function checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ) { - var instance = workInProgress.stateNode; - - if (typeof instance.shouldComponentUpdate === "function") { - var shouldUpdate = instance.shouldComponentUpdate( - newProps, - newState, - nextContext - ); - { - if (shouldUpdate === undefined) { - error( - "%s.shouldComponentUpdate(): Returned undefined instead of a " + - "boolean value. Make sure to return true or false.", - getComponentNameFromType(ctor) || "Component" - ); - } - } + workInProgress.memoizedProps = newProps; + workInProgress.memoizedState = newState; + } // Update the existing instance's state, props, and context pointers even + // if shouldComponentUpdate returns false. - return shouldUpdate; - } - if (ctor.prototype && ctor.prototype.isPureReactComponent) { - return ( - !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState) - ); - } + instance.props = newProps; + instance.state = newState; + instance.context = nextContext; + return shouldUpdate; +} // Invokes the update life-cycles and returns false if it shouldn't rerender. - return true; - } - function checkClassInstance(workInProgress, ctor, newProps) { - var instance = workInProgress.stateNode; +function updateClassInstance(current, workInProgress, ctor, newProps, renderLanes) { + var instance = workInProgress.stateNode; + cloneUpdateQueue(current, workInProgress); + var unresolvedOldProps = workInProgress.memoizedProps; + var oldProps = resolveClassComponentProps(ctor, unresolvedOldProps, workInProgress.type === workInProgress.elementType); + instance.props = oldProps; + var unresolvedNewProps = workInProgress.pendingProps; + var oldContext = instance.context; + var contextType = ctor.contextType; + var nextContext = emptyContextObject; - { - var name = getComponentNameFromType(ctor) || "Component"; - var renderPresent = instance.render; - - if (!renderPresent) { - if (ctor.prototype && typeof ctor.prototype.render === "function") { - error( - "No `render` method found on the %s " + - "instance: did you accidentally return an object from the constructor?", - name - ); - } else { - error( - "No `render` method found on the %s " + - "instance: you may have forgotten to define `render`.", - name - ); - } - } + if (typeof contextType === 'object' && contextType !== null) { + nextContext = readContext(contextType); + } else { + var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + nextContext = getMaskedContext(workInProgress, nextUnmaskedContext); + } - if ( - instance.getInitialState && - !instance.getInitialState.isReactClassApproved && - !instance.state - ) { - error( - "getInitialState was defined on %s, a plain JavaScript class. " + - "This is only supported for classes created using React.createClass. " + - "Did you mean to define a state property instead?", - name - ); - } + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; + var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // Note: During these life-cycles, instance.props/instance.state are what + // ever the previously attempted to render - not the "current". However, + // during componentDidUpdate we pass the "current" props. + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. - if ( - instance.getDefaultProps && - !instance.getDefaultProps.isReactClassApproved - ) { - error( - "getDefaultProps was defined on %s, a plain JavaScript class. " + - "This is only supported for classes created using React.createClass. " + - "Use a static property to define defaultProps instead.", - name - ); - } + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) { + if (unresolvedOldProps !== unresolvedNewProps || oldContext !== nextContext) { + callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext); + } + } - if (instance.propTypes) { - error( - "propTypes was defined as an instance property on %s. Use a static " + - "property to define propTypes instead.", - name - ); - } + resetHasForceUpdateBeforeProcessing(); + var oldState = workInProgress.memoizedState; + var newState = instance.state = oldState; + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + newState = workInProgress.memoizedState; - if (instance.contextType) { - error( - "contextType was defined as an instance property on %s. Use a static " + - "property to define contextType instead.", - name - ); - } + if (unresolvedOldProps === unresolvedNewProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing() && !(enableLazyContextPropagation )) { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Update; + } + } - { - if (instance.contextTypes) { - error( - "contextTypes was defined as an instance property on %s. Use a static " + - "property to define contextTypes instead.", - name - ); - } + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Snapshot; + } + } - if ( - ctor.contextType && - ctor.contextTypes && - !didWarnAboutContextTypeAndContextTypes.has(ctor) - ) { - didWarnAboutContextTypeAndContextTypes.add(ctor); - - error( - "%s declares both contextTypes and contextType static properties. " + - "The legacy contextTypes property will be ignored.", - name - ); - } - } + return false; + } - if (typeof instance.componentShouldUpdate === "function") { - error( - "%s has a method called " + - "componentShouldUpdate(). Did you mean shouldComponentUpdate()? " + - "The name is phrased as a question because the function is " + - "expected to return a value.", - name - ); - } + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + newState = workInProgress.memoizedState; + } - if ( - ctor.prototype && - ctor.prototype.isPureReactComponent && - typeof instance.shouldComponentUpdate !== "undefined" - ) { - error( - "%s has a method called shouldComponentUpdate(). " + - "shouldComponentUpdate should not be used when extending React.PureComponent. " + - "Please extend React.Component if shouldComponentUpdate is used.", - getComponentNameFromType(ctor) || "A pure component" - ); - } + var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) || // TODO: In some cases, we'll end up checking if context has changed twice, + // both before and after `shouldComponentUpdate` has been called. Not ideal, + // but I'm loath to refactor this function. This only happens for memoized + // components so it's not that common. + enableLazyContextPropagation ; - if (typeof instance.componentDidUnmount === "function") { - error( - "%s has a method called " + - "componentDidUnmount(). But there is no such lifecycle method. " + - "Did you mean componentWillUnmount()?", - name - ); - } + if (shouldUpdate) { + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillUpdate === 'function' || typeof instance.componentWillUpdate === 'function')) { + if (typeof instance.componentWillUpdate === 'function') { + instance.componentWillUpdate(newProps, newState, nextContext); + } - if (typeof instance.componentDidReceiveProps === "function") { - error( - "%s has a method called " + - "componentDidReceiveProps(). But there is no such lifecycle method. " + - "If you meant to update the state in response to changing props, " + - "use componentWillReceiveProps(). If you meant to fetch data or " + - "run side-effects or mutations after React has updated the UI, use componentDidUpdate().", - name - ); - } + if (typeof instance.UNSAFE_componentWillUpdate === 'function') { + instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext); + } + } - if (typeof instance.componentWillRecieveProps === "function") { - error( - "%s has a method called " + - "componentWillRecieveProps(). Did you mean componentWillReceiveProps()?", - name - ); - } + if (typeof instance.componentDidUpdate === 'function') { + workInProgress.flags |= Update; + } - if (typeof instance.UNSAFE_componentWillRecieveProps === "function") { - error( - "%s has a method called " + - "UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?", - name - ); - } + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + workInProgress.flags |= Snapshot; + } + } else { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Update; + } + } - var hasMutatedProps = instance.props !== newProps; + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Snapshot; + } + } // If shouldComponentUpdate returned false, we should still update the + // memoized props/state to indicate that this work can be reused. - if (instance.props !== undefined && hasMutatedProps) { - error( - "When calling super() in `%s`, make sure to pass " + - "up the same props that your component's constructor was passed.", - name - ); - } - if (instance.defaultProps) { - error( - "Setting defaultProps as an instance property on %s is not supported and will be ignored." + - " Instead, define defaultProps as a static property on %s.", - name, - name - ); - } + workInProgress.memoizedProps = newProps; + workInProgress.memoizedState = newState; + } // Update the existing instance's state, props, and context pointers even + // if shouldComponentUpdate returns false. - if ( - typeof instance.getSnapshotBeforeUpdate === "function" && - typeof instance.componentDidUpdate !== "function" && - !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor) - ) { - didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor); - - error( - "%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). " + - "This component defines getSnapshotBeforeUpdate() only.", - getComponentNameFromType(ctor) - ); - } - if (typeof instance.getDerivedStateFromProps === "function") { - error( - "%s: getDerivedStateFromProps() is defined as an instance method " + - "and will be ignored. Instead, declare it as a static method.", - name - ); - } + instance.props = newProps; + instance.state = newState; + instance.context = nextContext; + return shouldUpdate; +} - if (typeof instance.getDerivedStateFromError === "function") { - error( - "%s: getDerivedStateFromError() is defined as an instance method " + - "and will be ignored. Instead, declare it as a static method.", - name - ); - } +function resolveClassComponentProps(Component, baseProps, // Only resolve default props if this is a lazy component. Otherwise, they +// would have already been resolved by the JSX runtime. +// TODO: We're going to remove default prop resolution from the JSX runtime +// and keep it only for class components. As part of that change, we should +// remove this extra check. +alreadyResolvedDefaultProps) { + var newProps = baseProps; - if (typeof ctor.getSnapshotBeforeUpdate === "function") { - error( - "%s: getSnapshotBeforeUpdate() is defined as a static method " + - "and will be ignored. Instead, declare it as an instance method.", - name - ); - } - var state = instance.state; + var defaultProps = Component.defaultProps; - if (state && (typeof state !== "object" || isArray(state))) { - error("%s.state: must be set to an object or null", name); - } + if (defaultProps && ( // If disableDefaultPropsExceptForClasses is true, we always resolve + // default props here in the reconciler, rather than in the JSX runtime. + !alreadyResolvedDefaultProps)) { + // We may have already copied the props object above to remove ref. If so, + // we can modify that. Otherwise, copy the props object with Object.assign. + if (newProps === baseProps) { + newProps = assign({}, newProps); + } // Taken from old JSX runtime, where this used to live. - if ( - typeof instance.getChildContext === "function" && - typeof ctor.childContextTypes !== "object" - ) { - error( - "%s.getChildContext(): childContextTypes must be defined in order to " + - "use getChildContext().", - name - ); - } + + for (var _propName in defaultProps) { + if (newProps[_propName] === undefined) { + newProps[_propName] = defaultProps[_propName]; } } + } - function constructClassInstance(workInProgress, ctor, props) { - var isLegacyContextConsumer = false; - var unmaskedContext = emptyContextObject; - var context = emptyContextObject; - var contextType = ctor.contextType; + return newProps; +} - { - if ("contextType" in ctor) { - var isValid = // Allow null for conditional declaration - contextType === null || - (contextType !== undefined && - contextType.$$typeof === REACT_CONTEXT_TYPE); - - if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) { - didWarnAboutInvalidateContextType.add(ctor); - var addendum = ""; - - if (contextType === undefined) { - addendum = - " However, it is set to undefined. " + - "This can be caused by a typo or by mixing up named and default imports. " + - "This can also happen due to a circular dependency, so " + - "try moving the createContext() call to a separate file."; - } else if (typeof contextType !== "object") { - addendum = " However, it is set to a " + typeof contextType + "."; - } else if (contextType.$$typeof === REACT_CONSUMER_TYPE) { - addendum = - " Did you accidentally pass the Context.Consumer instead?"; - } else { - addendum = - " However, it is set to an object with keys {" + - Object.keys(contextType).join(", ") + - "}."; - } +function resolveDefaultPropsOnNonClassComponent(Component, baseProps) { - error( - "%s defines an invalid contextType. " + - "contextType should point to the Context object returned by React.createContext().%s", - getComponentNameFromType(ctor) || "Component", - addendum - ); - } - } - } + if (Component && Component.defaultProps) { + // Resolve default props. Taken from ReactElement + var props = assign({}, baseProps); + var defaultProps = Component.defaultProps; - if (typeof contextType === "object" && contextType !== null) { - context = readContext(contextType); - } else { - unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); - var contextTypes = ctor.contextTypes; - isLegacyContextConsumer = - contextTypes !== null && contextTypes !== undefined; - context = isLegacyContextConsumer - ? getMaskedContext(workInProgress, unmaskedContext) - : emptyContextObject; + for (var propName in defaultProps) { + if (props[propName] === undefined) { + props[propName] = defaultProps[propName]; } + } + + return props; + } - var instance = new ctor(props, context); // Instantiate twice to help detect side-effects. + return baseProps; +} - var state = (workInProgress.memoizedState = - instance.state !== null && instance.state !== undefined - ? instance.state - : null); - instance.updater = classComponentUpdater; - workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates +var reportGlobalError = typeof reportError === 'function' ? // In modern browsers, reportError will dispatch an error event, +// emulating an uncaught JavaScript error. +reportError : function (error) { + if (typeof window === 'object' && typeof window.ErrorEvent === 'function') { + // Browser Polyfill + var message = typeof error === 'object' && error !== null && typeof error.message === 'string' ? // eslint-disable-next-line react-internal/safe-string-coercion + String(error.message) : // eslint-disable-next-line react-internal/safe-string-coercion + String(error); + var event = new window.ErrorEvent('error', { + bubbles: true, + cancelable: true, + message: message, + error: error + }); + var shouldLog = window.dispatchEvent(event); + + if (!shouldLog) { + return; + } + } else if (typeof process === 'object' && // $FlowFixMe[method-unbinding] + typeof process.emit === 'function') { + // Node Polyfill + process.emit('uncaughtException', error); + return; + } // eslint-disable-next-line react-internal/no-production-logging + + + console['error'](error); +}; + +var componentName = null; +var errorBoundaryName = null; +function defaultOnUncaughtError(error, errorInfo) { + // Overriding this can silence these warnings e.g. for tests. + // See https://github.com/facebook/react/pull/13384 + // For uncaught root errors we report them as uncaught to the browser's + // onerror callback. This won't have component stacks and the error addendum. + // So we add those into a separate console.warn. + reportGlobalError(error); + + { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var componentNameMessage = componentName ? "An error occurred in the <" + componentName + "> component:" : 'An error occurred in one of your React components:'; + console['warn']('%s\n%s\n\n%s', componentNameMessage, componentStack || '', 'Consider adding an error boundary to your tree to customize error handling behavior.\n' + 'Visit https://react.dev/link/error-boundaries to learn more about error boundaries.'); + } +} +function defaultOnCaughtError(error, errorInfo) { + // Overriding this can silence these warnings e.g. for tests. + // See https://github.com/facebook/react/pull/13384 + // Caught by error boundary + { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var componentNameMessage = componentName ? "The above error occurred in the <" + componentName + "> component:" : 'The above error occurred in one of your React components:'; // In development, we provide our own message which includes the component stack + // in addition to the error. + // Don't transform to our wrapper + + console['error']('%o\n\n%s\n%s\n\n%s', error, componentNameMessage, componentStack, "React will try to recreate this component tree from scratch " + ("using the error boundary you provided, " + (errorBoundaryName || 'Anonymous') + ".")); + } +} +function defaultOnRecoverableError(error, errorInfo) { + reportGlobalError(error); +} +function logUncaughtError(root, errorInfo) { + try { + if (true) { + componentName = errorInfo.source ? getComponentNameFromFiber(errorInfo.source) : null; + errorBoundaryName = null; + } - set(instance, workInProgress); + var error = errorInfo.value; - { - instance._reactInternalInstance = fakeInternalInstance; - } + if (true && ReactSharedInternals.actQueue !== null) { + // For uncaught errors inside act, we track them on the act and then + // rethrow them into the test. + ReactSharedInternals.thrownErrors.push(error); + return; + } - { - if ( - typeof ctor.getDerivedStateFromProps === "function" && - state === null - ) { - var componentName = getComponentNameFromType(ctor) || "Component"; - - if (!didWarnAboutUninitializedState.has(componentName)) { - didWarnAboutUninitializedState.add(componentName); - - error( - "`%s` uses `getDerivedStateFromProps` but its initial state is " + - "%s. This is not recommended. Instead, define the initial state by " + - "assigning an object to `this.state` in the constructor of `%s`. " + - "This ensures that `getDerivedStateFromProps` arguments have a consistent shape.", - componentName, - instance.state === null ? "null" : "undefined", - componentName - ); - } - } // If new component APIs are defined, "unsafe" lifecycles won't be called. - // Warn about these lifecycles if they are present. - // Don't warn about react-lifecycles-compat polyfilled methods though. - - if ( - typeof ctor.getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function" - ) { - var foundWillMountName = null; - var foundWillReceivePropsName = null; - var foundWillUpdateName = null; - - if ( - typeof instance.componentWillMount === "function" && - instance.componentWillMount.__suppressDeprecationWarning !== true - ) { - foundWillMountName = "componentWillMount"; - } else if (typeof instance.UNSAFE_componentWillMount === "function") { - foundWillMountName = "UNSAFE_componentWillMount"; - } + var onUncaughtError = root.onUncaughtError; + onUncaughtError(error, { + componentStack: errorInfo.stack + }); + } catch (e) { + // This method must not throw, or React internal state will get messed up. + // If console.error is overridden, or logCapturedError() shows a dialog that throws, + // we want to report this error outside of the normal stack as a last resort. + // https://github.com/facebook/react/issues/13188 + setTimeout(function () { + throw e; + }); + } +} +function logCaughtError(root, boundary, errorInfo) { + try { + if (true) { + componentName = errorInfo.source ? getComponentNameFromFiber(errorInfo.source) : null; + errorBoundaryName = getComponentNameFromFiber(boundary); + } + + var error = errorInfo.value; + var onCaughtError = root.onCaughtError; + onCaughtError(error, { + componentStack: errorInfo.stack, + errorBoundary: boundary.tag === ClassComponent ? boundary.stateNode // This should always be the case as long as we only have class boundaries + : null + }); + } catch (e) { + // This method must not throw, or React internal state will get messed up. + // If console.error is overridden, or logCapturedError() shows a dialog that throws, + // we want to report this error outside of the normal stack as a last resort. + // https://github.com/facebook/react/issues/13188 + setTimeout(function () { + throw e; + }); + } +} - if ( - typeof instance.componentWillReceiveProps === "function" && - instance.componentWillReceiveProps.__suppressDeprecationWarning !== - true - ) { - foundWillReceivePropsName = "componentWillReceiveProps"; - } else if ( - typeof instance.UNSAFE_componentWillReceiveProps === "function" - ) { - foundWillReceivePropsName = "UNSAFE_componentWillReceiveProps"; - } +function createRootErrorUpdate(root, errorInfo, lane) { + var update = createUpdate(lane); // Unmount the root by rendering null. - if ( - typeof instance.componentWillUpdate === "function" && - instance.componentWillUpdate.__suppressDeprecationWarning !== true - ) { - foundWillUpdateName = "componentWillUpdate"; - } else if ( - typeof instance.UNSAFE_componentWillUpdate === "function" - ) { - foundWillUpdateName = "UNSAFE_componentWillUpdate"; - } + update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property + // being called "element". - if ( - foundWillMountName !== null || - foundWillReceivePropsName !== null || - foundWillUpdateName !== null - ) { - var _componentName = getComponentNameFromType(ctor) || "Component"; - - var newApiName = - typeof ctor.getDerivedStateFromProps === "function" - ? "getDerivedStateFromProps()" - : "getSnapshotBeforeUpdate()"; - - if ( - !didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName) - ) { - didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName); - - error( - "Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n" + - "%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n" + - "The above lifecycles should be removed. Learn more about this warning here:\n" + - "https://react.dev/link/unsafe-component-lifecycles", - _componentName, - newApiName, - foundWillMountName !== null ? "\n " + foundWillMountName : "", - foundWillReceivePropsName !== null - ? "\n " + foundWillReceivePropsName - : "", - foundWillUpdateName !== null ? "\n " + foundWillUpdateName : "" - ); - } - } - } - } // Cache unmasked context so we can avoid recreating masked context unless necessary. - // ReactFiberContext usually updates this cache but can't for newly-created instances. + update.payload = { + element: null + }; + + update.callback = function () { + logUncaughtError(root, errorInfo); + }; + + return update; +} + +function createClassErrorUpdate(lane) { + var update = createUpdate(lane); + update.tag = CaptureUpdate; + return update; +} + +function initializeClassErrorUpdate(update, root, fiber, errorInfo) { + var getDerivedStateFromError = fiber.type.getDerivedStateFromError; + + if (typeof getDerivedStateFromError === 'function') { + var error$1 = errorInfo.value; + + update.payload = function () { + return getDerivedStateFromError(error$1); + }; - if (isLegacyContextConsumer) { - cacheContext(workInProgress, unmaskedContext, context); + update.callback = function () { + { + markFailedErrorBoundaryForHotReloading(fiber); } - return instance; - } + logCaughtError(root, fiber, errorInfo); + }; + } - function callComponentWillMount(workInProgress, instance) { - var oldState = instance.state; + var inst = fiber.stateNode; - if (typeof instance.componentWillMount === "function") { - instance.componentWillMount(); + if (inst !== null && typeof inst.componentDidCatch === 'function') { + // $FlowFixMe[missing-this-annot] + update.callback = function callback() { + { + markFailedErrorBoundaryForHotReloading(fiber); } - if (typeof instance.UNSAFE_componentWillMount === "function") { - instance.UNSAFE_componentWillMount(); + logCaughtError(root, fiber, errorInfo); + + if (typeof getDerivedStateFromError !== 'function') { + // To preserve the preexisting retry behavior of error boundaries, + // we keep track of which ones already failed during this batch. + // This gets reset before we yield back to the browser. + // TODO: Warn in strict mode if getDerivedStateFromError is + // not defined. + markLegacyErrorBoundaryAsFailed(this); } - if (oldState !== instance.state) { - { - error( - "%s.componentWillMount(): Assigning directly to this.state is " + - "deprecated (except inside a component's " + - "constructor). Use setState instead.", - getComponentNameFromFiber(workInProgress) || "Component" - ); - } + var error$1 = errorInfo.value; + var stack = errorInfo.stack; + this.componentDidCatch(error$1, { + componentStack: stack !== null ? stack : '' + }); - classComponentUpdater.enqueueReplaceState( - instance, - instance.state, - null - ); + { + if (typeof getDerivedStateFromError !== 'function') { + // If componentDidCatch is the only error boundary method defined, + // then it needs to call setState to recover from errors. + // If no state update is scheduled then the boundary will swallow the error. + if (!includesSomeLane(fiber.lanes, SyncLane)) { + error('%s: Error boundaries should implement getDerivedStateFromError(). ' + 'In that method, return a state update to display an error message or fallback UI.', getComponentNameFromFiber(fiber) || 'Unknown'); + } + } } - } + }; + } +} - function callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ) { - var oldState = instance.state; +function resetSuspendedComponent(sourceFiber, rootRenderLanes) { + // A legacy mode Suspense quirk, only relevant to hook components. - if (typeof instance.componentWillReceiveProps === "function") { - instance.componentWillReceiveProps(newProps, nextContext); - } - if (typeof instance.UNSAFE_componentWillReceiveProps === "function") { - instance.UNSAFE_componentWillReceiveProps(newProps, nextContext); - } + var tag = sourceFiber.tag; - if (instance.state !== oldState) { - { - var componentName = - getComponentNameFromFiber(workInProgress) || "Component"; + if ((sourceFiber.mode & ConcurrentMode) === NoMode && (tag === FunctionComponent || tag === ForwardRef || tag === SimpleMemoComponent)) { + var currentSource = sourceFiber.alternate; - if (!didWarnAboutStateAssignmentForComponent.has(componentName)) { - didWarnAboutStateAssignmentForComponent.add(componentName); + if (currentSource) { + sourceFiber.updateQueue = currentSource.updateQueue; + sourceFiber.memoizedState = currentSource.memoizedState; + sourceFiber.lanes = currentSource.lanes; + } else { + sourceFiber.updateQueue = null; + sourceFiber.memoizedState = null; + } + } +} - error( - "%s.componentWillReceiveProps(): Assigning directly to " + - "this.state is deprecated (except inside a component's " + - "constructor). Use setState instead.", - componentName - ); - } - } +function markSuspenseBoundaryShouldCapture(suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes) { + // This marks a Suspense boundary so that when we're unwinding the stack, + // it captures the suspended "exception" and does a second (fallback) pass. + if ((suspenseBoundary.mode & ConcurrentMode) === NoMode) { + // Legacy Mode Suspense + // + // If the boundary is in legacy mode, we should *not* + // suspend the commit. Pretend as if the suspended component rendered + // null and keep rendering. When the Suspense boundary completes, + // we'll do a second pass to render the fallback. + if (suspenseBoundary === returnFiber) { + // Special case where we suspended while reconciling the children of + // a Suspense boundary's inner Offscreen wrapper fiber. This happens + // when a React.lazy component is a direct child of a + // Suspense boundary. + // + // Suspense boundaries are implemented as multiple fibers, but they + // are a single conceptual unit. The legacy mode behavior where we + // pretend the suspended fiber committed as `null` won't work, + // because in this case the "suspended" fiber is the inner + // Offscreen wrapper. + // + // Because the contents of the boundary haven't started rendering + // yet (i.e. nothing in the tree has partially rendered) we can + // switch to the regular, concurrent mode behavior: mark the + // boundary with ShouldCapture and enter the unwind phase. + suspenseBoundary.flags |= ShouldCapture; + } else { + suspenseBoundary.flags |= DidCapture; + sourceFiber.flags |= ForceUpdateForLegacySuspense; // We're going to commit this fiber even though it didn't complete. + // But we shouldn't call any lifecycle methods or callbacks. Remove + // all lifecycle effect tags. + + sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete); + + if (sourceFiber.tag === ClassComponent) { + var currentSourceFiber = sourceFiber.alternate; + + if (currentSourceFiber === null) { + // This is a new mount. Change the tag so it's not mistaken for a + // completed class component. For example, we should not call + // componentWillUnmount if it is deleted. + sourceFiber.tag = IncompleteClassComponent; + } else { + // When we try rendering again, we should not reuse the current fiber, + // since it's known to be in an inconsistent state. Use a force update to + // prevent a bail out. + var update = createUpdate(SyncLane); + update.tag = ForceUpdate; + enqueueUpdate(sourceFiber, update, SyncLane); + } + } else if (sourceFiber.tag === FunctionComponent) { + var _currentSourceFiber = sourceFiber.alternate; + + if (_currentSourceFiber === null) { + // This is a new mount. Change the tag so it's not mistaken for a + // completed function component. + sourceFiber.tag = IncompleteFunctionComponent; + } + } // The source fiber did not complete. Mark it with Sync priority to + // indicate that it still has pending work. + + + sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); + } + + return suspenseBoundary; + } // Confirmed that the boundary is in a concurrent mode tree. Continue + // with the normal suspend path. + // + // After this we'll use a set of heuristics to determine whether this + // render pass will run to completion or restart or "suspend" the commit. + // The actual logic for this is spread out in different places. + // + // This first principle is that if we're going to suspend when we complete + // a root, then we should also restart if we get an update or ping that + // might unsuspend it, and vice versa. The only reason to suspend is + // because you think you might want to restart before committing. However, + // it doesn't make sense to restart only while in the period we're suspended. + // + // Restarting too aggressively is also not good because it starves out any + // intermediate loading state. So we use heuristics to determine when. + // Suspense Heuristics + // + // If nothing threw a Promise or all the same fallbacks are already showing, + // then don't suspend/restart. + // + // If this is an initial render of a new tree of Suspense boundaries and + // those trigger a fallback, then don't suspend/restart. We want to ensure + // that we can show the initial loading state as quickly as possible. + // + // If we hit a "Delayed" case, such as when we'd switch from content back into + // a fallback, then we should always suspend/restart. Transitions apply + // to this case. If none is defined, JND is used instead. + // + // If we're already showing a fallback and it gets "retried", allowing us to show + // another level, but there's still an inner boundary that would show a fallback, + // then we suspend/restart for 500ms since the last time we showed a fallback + // anywhere in the tree. This effectively throttles progressive loading into a + // consistent train of commits. This also gives us an opportunity to restart to + // get to the completed state slightly earlier. + // + // If there's ambiguity due to batching it's resolved in preference of: + // 1) "delayed", 2) "initial render", 3) "retry". + // + // We want to ensure that a "busy" state doesn't get force committed. We want to + // ensure that new initial loading states can commit as soon as possible. + + + suspenseBoundary.flags |= ShouldCapture; // TODO: I think we can remove this, since we now use `DidCapture` in + // the begin phase to prevent an early bailout. + + suspenseBoundary.lanes = rootRenderLanes; + return suspenseBoundary; +} - classComponentUpdater.enqueueReplaceState( - instance, - instance.state, - null - ); - } - } // Invokes the mount life-cycles on a previously never rendered instance. +function throwException(root, returnFiber, sourceFiber, value, rootRenderLanes) { + // The source fiber did not complete. + sourceFiber.flags |= Incomplete; - function mountClassInstance(workInProgress, ctor, newProps, renderLanes) { - { - checkClassInstance(workInProgress, ctor, newProps); - } + if (value !== null && typeof value === 'object') { - var instance = workInProgress.stateNode; - instance.props = newProps; - instance.state = workInProgress.memoizedState; - instance.refs = {}; - initializeUpdateQueue(workInProgress); - var contextType = ctor.contextType; + if (typeof value.then === 'function') { + // This is a wakeable. The component suspended. + var wakeable = value; + resetSuspendedComponent(sourceFiber); - if (typeof contextType === "object" && contextType !== null) { - instance.context = readContext(contextType); - } else { - var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); - instance.context = getMaskedContext(workInProgress, unmaskedContext); - } - { - if (instance.state === newProps) { - var componentName = getComponentNameFromType(ctor) || "Component"; + var suspenseBoundary = getSuspenseHandler(); - if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) { - didWarnAboutDirectlyAssigningPropsToState.add(componentName); + if (suspenseBoundary !== null) { + switch (suspenseBoundary.tag) { + case SuspenseComponent: + { + // If this suspense boundary is not already showing a fallback, mark + // the in-progress render as suspended. We try to perform this logic + // as soon as soon as possible during the render phase, so the work + // loop can know things like whether it's OK to switch to other tasks, + // or whether it can wait for data to resolve before continuing. + // TODO: Most of these checks are already performed when entering a + // Suspense boundary. We should track the information on the stack so + // we don't have to recompute it on demand. This would also allow us + // to unify with `use` which needs to perform this logic even sooner, + // before `throwException` is called. + if (sourceFiber.mode & ConcurrentMode) { + if (getShellBoundary() === null) { + // Suspended in the "shell" of the app. This is an undesirable + // loading state. We should avoid committing this tree. + renderDidSuspendDelayIfPossible(); + } else { + // If we suspended deeper than the shell, we don't need to delay + // the commmit. However, we still call renderDidSuspend if this is + // a new boundary, to tell the work loop that a new fallback has + // appeared during this render. + // TODO: Theoretically we should be able to delete this branch. + // It's currently used for two things: 1) to throttle the + // appearance of successive loading states, and 2) in + // SuspenseList, to determine whether the children include any + // pending fallbacks. For 1, we should apply throttling to all + // retries, not just ones that render an additional fallback. For + // 2, we should check subtreeFlags instead. Then we can delete + // this branch. + var current = suspenseBoundary.alternate; + + if (current === null) { + renderDidSuspend(); + } + } + } - error( - "%s: It is not recommended to assign props directly to state " + - "because updates to props won't be reflected in state. " + - "In most cases, it is better to use props directly.", - componentName - ); - } - } + suspenseBoundary.flags &= ~ForceClientRender; + markSuspenseBoundaryShouldCapture(suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes); // Retry listener + // + // If the fallback does commit, we need to attach a different type of + // listener. This one schedules an update on the Suspense boundary to + // turn the fallback state off. + // + // Stash the wakeable on the boundary fiber so we can access it in the + // commit phase. + // + // When the wakeable resolves, we'll attempt to render the boundary + // again ("retry"). + // Check if this is a Suspensey resource. We do not attach retry + // listeners to these, because we don't actually need them for + // rendering. Only for committing. Instead, if a fallback commits + // and the only thing that suspended was a Suspensey resource, we + // retry immediately. + // TODO: Refactor throwException so that we don't have to do this type + // check. The caller already knows what the cause was. + + var isSuspenseyResource = wakeable === noopSuspenseyCommitThenable; + + if (isSuspenseyResource) { + suspenseBoundary.flags |= ScheduleRetry; + } else { + var retryQueue = suspenseBoundary.updateQueue; - if (workInProgress.mode & StrictLegacyMode) { - ReactStrictModeWarnings.recordLegacyContextWarning( - workInProgress, - instance - ); - } + if (retryQueue === null) { + suspenseBoundary.updateQueue = new Set([wakeable]); + } else { + retryQueue.add(wakeable); + } // We only attach ping listeners in concurrent mode. Legacy + // Suspense always commits fallbacks synchronously, so there are + // no pings. - ReactStrictModeWarnings.recordUnsafeLifecycleWarnings( - workInProgress, - instance - ); - } - - instance.state = workInProgress.memoizedState; - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - instance.state = workInProgress.memoizedState; - } // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - typeof ctor.getDerivedStateFromProps !== "function" && - typeof instance.getSnapshotBeforeUpdate !== "function" && - (typeof instance.UNSAFE_componentWillMount === "function" || - typeof instance.componentWillMount === "function") - ) { - callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's - // process them now. - - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - instance.state = workInProgress.memoizedState; - } - - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } - - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } - } - - function resumeMountClassInstance( - workInProgress, - ctor, - newProps, - renderLanes - ) { - var instance = workInProgress.stateNode; - var unresolvedOldProps = workInProgress.memoizedProps; - var oldProps = resolveClassComponentProps( - ctor, - unresolvedOldProps, - workInProgress.type === workInProgress.elementType - ); - instance.props = oldProps; - var oldContext = instance.context; - var contextType = ctor.contextType; - var nextContext = emptyContextObject; - - if (typeof contextType === "object" && contextType !== null) { - nextContext = readContext(contextType); - } else { - var nextLegacyUnmaskedContext = getUnmaskedContext( - workInProgress, - ctor, - true - ); - nextContext = getMaskedContext( - workInProgress, - nextLegacyUnmaskedContext - ); - } - - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - var hasNewLifecycles = - typeof getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function"; // When comparing whether props changed, we should compare using the - // unresolved props object that is stored on the fiber, rather than the - // one that gets assigned to the instance, because that object may have been - // cloned to resolve default props and/or remove `ref`. - - var unresolvedNewProps = workInProgress.pendingProps; - var didReceiveNewProps = unresolvedNewProps !== unresolvedOldProps; // Note: During these life-cycles, instance.props/instance.state are what - // ever the previously attempted to render - not the "current". However, - // during componentDidUpdate we pass the "current" props. - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillReceiveProps === "function" || - typeof instance.componentWillReceiveProps === "function") - ) { - if (didReceiveNewProps || oldContext !== nextContext) { - callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ); - } - } - resetHasForceUpdateBeforeProcessing(); - var oldState = workInProgress.memoizedState; - var newState = (instance.state = oldState); - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - newState = workInProgress.memoizedState; - - if ( - !didReceiveNewProps && - oldState === newState && - !hasContextChanged() && - !checkHasForceUpdateAfterProcessing() - ) { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } + if (suspenseBoundary.mode & ConcurrentMode) { + attachPingListener(root, wakeable, rootRenderLanes); + } + } - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } + return false; + } - return false; - } + case OffscreenComponent: + { + if (suspenseBoundary.mode & ConcurrentMode) { + suspenseBoundary.flags |= ShouldCapture; - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - newState = workInProgress.memoizedState; - } - - var shouldUpdate = - checkHasForceUpdateAfterProcessing() || - checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ); - - if (shouldUpdate) { - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillMount === "function" || - typeof instance.componentWillMount === "function") - ) { - if (typeof instance.componentWillMount === "function") { - instance.componentWillMount(); - } + var _isSuspenseyResource = wakeable === noopSuspenseyCommitThenable; - if (typeof instance.UNSAFE_componentWillMount === "function") { - instance.UNSAFE_componentWillMount(); - } - } + if (_isSuspenseyResource) { + suspenseBoundary.flags |= ScheduleRetry; + } else { + var offscreenQueue = suspenseBoundary.updateQueue; + + if (offscreenQueue === null) { + var newOffscreenQueue = { + transitions: null, + markerInstances: null, + retryQueue: new Set([wakeable]) + }; + suspenseBoundary.updateQueue = newOffscreenQueue; + } else { + var _retryQueue = offscreenQueue.retryQueue; - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } + if (_retryQueue === null) { + offscreenQueue.retryQueue = new Set([wakeable]); + } else { + _retryQueue.add(wakeable); + } + } - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } - } else { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; + attachPingListener(root, wakeable, rootRenderLanes); + } + + return false; + } + } } - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } // If shouldComponentUpdate returned false, we should still update the - // memoized state to indicate that this work can be reused. - - workInProgress.memoizedProps = newProps; - workInProgress.memoizedState = newState; - } // Update the existing instance's state, props, and context pointers even - // if shouldComponentUpdate returns false. - - instance.props = newProps; - instance.state = newState; - instance.context = nextContext; - return shouldUpdate; - } // Invokes the update life-cycles and returns false if it shouldn't rerender. - - function updateClassInstance( - current, - workInProgress, - ctor, - newProps, - renderLanes - ) { - var instance = workInProgress.stateNode; - cloneUpdateQueue(current, workInProgress); - var unresolvedOldProps = workInProgress.memoizedProps; - var oldProps = resolveClassComponentProps( - ctor, - unresolvedOldProps, - workInProgress.type === workInProgress.elementType - ); - instance.props = oldProps; - var unresolvedNewProps = workInProgress.pendingProps; - var oldContext = instance.context; - var contextType = ctor.contextType; - var nextContext = emptyContextObject; - - if (typeof contextType === "object" && contextType !== null) { - nextContext = readContext(contextType); + throw new Error("Unexpected Suspense handler tag (" + suspenseBoundary.tag + "). This " + 'is a bug in React.'); } else { - var nextUnmaskedContext = getUnmaskedContext( - workInProgress, - ctor, - true - ); - nextContext = getMaskedContext(workInProgress, nextUnmaskedContext); - } - - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - var hasNewLifecycles = - typeof getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function"; // Note: During these life-cycles, instance.props/instance.state are what - // ever the previously attempted to render - not the "current". However, - // during componentDidUpdate we pass the "current" props. - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillReceiveProps === "function" || - typeof instance.componentWillReceiveProps === "function") - ) { - if ( - unresolvedOldProps !== unresolvedNewProps || - oldContext !== nextContext - ) { - callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ); + // No boundary was found. Unless this is a sync update, this is OK. + // We can suspend and wait for more data to arrive. + if (root.tag === ConcurrentRoot) { + // In a concurrent root, suspending without a Suspense boundary is + // allowed. It will suspend indefinitely without committing. + // + // TODO: Should we have different behavior for discrete updates? What + // about flushSync? Maybe it should put the tree into an inert state, + // and potentially log a warning. Revisit this for a future release. + attachPingListener(root, wakeable, rootRenderLanes); + renderDidSuspendDelayIfPossible(); + return false; + } else { + // In a legacy root, suspending without a boundary is always an error. + var uncaughtSuspenseError = new Error('A component suspended while responding to synchronous input. This ' + 'will cause the UI to be replaced with a loading indicator. To ' + 'fix, updates that suspend should be wrapped ' + 'with startTransition.'); + value = uncaughtSuspenseError; } } + } + } // This is a regular error, not a Suspense wakeable. - resetHasForceUpdateBeforeProcessing(); - var oldState = workInProgress.memoizedState; - var newState = (instance.state = oldState); - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - newState = workInProgress.memoizedState; - - if ( - unresolvedOldProps === unresolvedNewProps && - oldState === newState && - !hasContextChanged() && - !checkHasForceUpdateAfterProcessing() && - !enableLazyContextPropagation - ) { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Update; - } - } + var wrapperError = new Error('There was an error during concurrent rendering but React was able to recover by ' + 'instead synchronously rendering the entire root.', { + cause: value + }); + queueConcurrentError(createCapturedValueAtFiber(wrapperError, sourceFiber)); + renderDidError(); // We didn't find a boundary that could handle this type of exception. Start + // over and traverse parent path again, this time treating the exception + // as an error. - if (typeof instance.getSnapshotBeforeUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Snapshot; - } - } + if (returnFiber === null) { + // There's no return fiber, which means the root errored. This should never + // happen. Return `true` to trigger a fatal error (panic). + return true; + } - return false; - } + var errorInfo = createCapturedValueAtFiber(value, sourceFiber); + var workInProgress = returnFiber; - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - newState = workInProgress.memoizedState; - } - - var shouldUpdate = - checkHasForceUpdateAfterProcessing() || - checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ) || // TODO: In some cases, we'll end up checking if context has changed twice, - // both before and after `shouldComponentUpdate` has been called. Not ideal, - // but I'm loath to refactor this function. This only happens for memoized - // components so it's not that common. - enableLazyContextPropagation; - - if (shouldUpdate) { - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillUpdate === "function" || - typeof instance.componentWillUpdate === "function") - ) { - if (typeof instance.componentWillUpdate === "function") { - instance.componentWillUpdate(newProps, newState, nextContext); - } + do { + switch (workInProgress.tag) { + case HostRoot: + { + workInProgress.flags |= ShouldCapture; - if (typeof instance.UNSAFE_componentWillUpdate === "function") { - instance.UNSAFE_componentWillUpdate( - newProps, - newState, - nextContext - ); - } - } + var _lane = pickArbitraryLane(rootRenderLanes); - if (typeof instance.componentDidUpdate === "function") { - workInProgress.flags |= Update; - } + workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane); - if (typeof instance.getSnapshotBeforeUpdate === "function") { - workInProgress.flags |= Snapshot; - } - } else { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Update; - } - } + var _update = createRootErrorUpdate(workInProgress.stateNode, errorInfo, _lane); - if (typeof instance.getSnapshotBeforeUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Snapshot; - } - } // If shouldComponentUpdate returned false, we should still update the - // memoized props/state to indicate that this work can be reused. - - workInProgress.memoizedProps = newProps; - workInProgress.memoizedState = newState; - } // Update the existing instance's state, props, and context pointers even - // if shouldComponentUpdate returns false. - - instance.props = newProps; - instance.state = newState; - instance.context = nextContext; - return shouldUpdate; - } - - function resolveClassComponentProps( - Component, - baseProps, // Only resolve default props if this is a lazy component. Otherwise, they - // would have already been resolved by the JSX runtime. - // TODO: We're going to remove default prop resolution from the JSX runtime - // and keep it only for class components. As part of that change, we should - // remove this extra check. - alreadyResolvedDefaultProps - ) { - var newProps = baseProps; - - var defaultProps = Component.defaultProps; - - if ( - defaultProps && // If disableDefaultPropsExceptForClasses is true, we always resolve - // default props here in the reconciler, rather than in the JSX runtime. - !alreadyResolvedDefaultProps - ) { - // We may have already copied the props object above to remove ref. If so, - // we can modify that. Otherwise, copy the props object with Object.assign. - if (newProps === baseProps) { - newProps = assign({}, newProps); - } // Taken from old JSX runtime, where this used to live. - - for (var _propName in defaultProps) { - if (newProps[_propName] === undefined) { - newProps[_propName] = defaultProps[_propName]; - } + enqueueCapturedUpdate(workInProgress, _update); + return false; } - } - return newProps; - } + case ClassComponent: + // Capture and retry + var ctor = workInProgress.type; + var instance = workInProgress.stateNode; - function resolveDefaultPropsOnNonClassComponent(Component, baseProps) { - if (Component && Component.defaultProps) { - // Resolve default props. Taken from ReactElement - var props = assign({}, baseProps); - var defaultProps = Component.defaultProps; + if ((workInProgress.flags & DidCapture) === NoFlags$1 && (typeof ctor.getDerivedStateFromError === 'function' || instance !== null && typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance))) { + workInProgress.flags |= ShouldCapture; - for (var propName in defaultProps) { - if (props[propName] === undefined) { - props[propName] = defaultProps[propName]; - } - } + var _lane2 = pickArbitraryLane(rootRenderLanes); - return props; - } - - return baseProps; - } - - var reportGlobalError = - typeof reportError === "function" // In modern browsers, reportError will dispatch an error event, - ? // emulating an uncaught JavaScript error. - reportError - : function (error) { - if ( - typeof window === "object" && - typeof window.ErrorEvent === "function" - ) { - // Browser Polyfill - var message = - typeof error === "object" && - error !== null && - typeof error.message === "string" // eslint-disable-next-line react-internal/safe-string-coercion - ? String(error.message) // eslint-disable-next-line react-internal/safe-string-coercion - : String(error); - var event = new window.ErrorEvent("error", { - bubbles: true, - cancelable: true, - message: message, - error: error - }); - var shouldLog = window.dispatchEvent(event); - - if (!shouldLog) { - return; - } - } else if ( - typeof process === "object" && // $FlowFixMe[method-unbinding] - typeof process.emit === "function" - ) { - // Node Polyfill - process.emit("uncaughtException", error); - return; - } // eslint-disable-next-line react-internal/no-production-logging - - console["error"](error); - }; + workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane2); // Schedule the error boundary to re-render using updated state - var componentName = null; - var errorBoundaryName = null; - function defaultOnUncaughtError(error, errorInfo) { - // Overriding this can silence these warnings e.g. for tests. - // See https://github.com/facebook/react/pull/13384 - // For uncaught root errors we report them as uncaught to the browser's - // onerror callback. This won't have component stacks and the error addendum. - // So we add those into a separate console.warn. - reportGlobalError(error); + var _update2 = createClassErrorUpdate(_lane2); - { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var componentNameMessage = componentName - ? "An error occurred in the <" + componentName + "> component:" - : "An error occurred in one of your React components:"; - console["warn"]( - "%s\n%s\n\n%s", - componentNameMessage, - componentStack || "", - "Consider adding an error boundary to your tree to customize error handling behavior.\n" + - "Visit https://react.dev/link/error-boundaries to learn more about error boundaries." - ); - } - } - function defaultOnCaughtError(error, errorInfo) { - // Overriding this can silence these warnings e.g. for tests. - // See https://github.com/facebook/react/pull/13384 - // Caught by error boundary - { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var componentNameMessage = componentName - ? "The above error occurred in the <" + componentName + "> component:" - : "The above error occurred in one of your React components:"; // In development, we provide our own message which includes the component stack - // in addition to the error. - // Don't transform to our wrapper - - console["error"]( - "%o\n\n%s\n%s\n\n%s", - error, - componentNameMessage, - componentStack, - "React will try to recreate this component tree from scratch " + - ("using the error boundary you provided, " + - (errorBoundaryName || "Anonymous") + - ".") - ); - } - } - function defaultOnRecoverableError(error, errorInfo) { - reportGlobalError(error); - } - function logUncaughtError(root, errorInfo) { - try { - if (true) { - componentName = errorInfo.source - ? getComponentNameFromFiber(errorInfo.source) - : null; - errorBoundaryName = null; + initializeClassErrorUpdate(_update2, root, workInProgress, errorInfo); + enqueueCapturedUpdate(workInProgress, _update2); + return false; } - var error = errorInfo.value; + break; + } // $FlowFixMe[incompatible-type] we bail out when we get a null - if (true && ReactSharedInternals.actQueue !== null) { - // For uncaught errors inside act, we track them on the act and then - // rethrow them into the test. - ReactSharedInternals.thrownErrors.push(error); - return; - } - var onUncaughtError = root.onUncaughtError; - onUncaughtError(error, { - componentStack: errorInfo.stack - }); - } catch (e) { - // This method must not throw, or React internal state will get messed up. - // If console.error is overridden, or logCapturedError() shows a dialog that throws, - // we want to report this error outside of the normal stack as a last resort. - // https://github.com/facebook/react/issues/13188 - setTimeout(function () { - throw e; - }); - } - } - function logCaughtError(root, boundary, errorInfo) { - try { - if (true) { - componentName = errorInfo.source - ? getComponentNameFromFiber(errorInfo.source) - : null; - errorBoundaryName = getComponentNameFromFiber(boundary); - } + workInProgress = workInProgress.return; + } while (workInProgress !== null); - var error = errorInfo.value; - var onCaughtError = root.onCaughtError; - onCaughtError(error, { - componentStack: errorInfo.stack, - errorBoundary: - boundary.tag === ClassComponent - ? boundary.stateNode // This should always be the case as long as we only have class boundaries - : null - }); - } catch (e) { - // This method must not throw, or React internal state will get messed up. - // If console.error is overridden, or logCapturedError() shows a dialog that throws, - // we want to report this error outside of the normal stack as a last resort. - // https://github.com/facebook/react/issues/13188 - setTimeout(function () { - throw e; - }); - } - } + return false; +} - function createRootErrorUpdate(root, errorInfo, lane) { - var update = createUpdate(lane); // Unmount the root by rendering null. +// into a dehydrated boundary. + +var SelectiveHydrationException = new Error("This is not a real error. It's an implementation detail of React's " + "selective hydration feature. If this leaks into userspace, it's a bug in " + 'React. Please file an issue.'); +var didReceiveUpdate = false; +var didWarnAboutBadClass; +var didWarnAboutContextTypeOnFunctionComponent; +var didWarnAboutGetDerivedStateOnFunctionComponent; +var didWarnAboutFunctionRefs; +var didWarnAboutReassigningProps; +var didWarnAboutRevealOrder; +var didWarnAboutTailOptions; +var didWarnAboutDefaultPropsOnFunctionComponent; + +{ + didWarnAboutBadClass = {}; + didWarnAboutContextTypeOnFunctionComponent = {}; + didWarnAboutGetDerivedStateOnFunctionComponent = {}; + didWarnAboutFunctionRefs = {}; + didWarnAboutReassigningProps = false; + didWarnAboutRevealOrder = {}; + didWarnAboutTailOptions = {}; + didWarnAboutDefaultPropsOnFunctionComponent = {}; +} - update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property - // being called "element". +function reconcileChildren(current, workInProgress, nextChildren, renderLanes) { + if (current === null) { + // If this is a fresh new component that hasn't been rendered yet, we + // won't update its child set by applying minimal side-effects. Instead, + // we will add them all to the child before it gets rendered. That means + // we can optimize this reconciliation pass by not tracking side-effects. + workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderLanes); + } else { + // If the current child is the same as the work in progress, it means that + // we haven't yet started any work on these children. Therefore, we use + // the clone algorithm to create a copy of all the current children. + // If we had any progressed work already, that is invalid at this point so + // let's throw it out. + workInProgress.child = reconcileChildFibers(workInProgress, current.child, nextChildren, renderLanes); + } +} - update.payload = { - element: null - }; +function forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderLanes) { + // This function is fork of reconcileChildren. It's used in cases where we + // want to reconcile without matching against the existing set. This has the + // effect of all current children being unmounted; even if the type and key + // are the same, the old child is unmounted and a new child is created. + // + // To do this, we're going to go through the reconcile algorithm twice. In + // the first pass, we schedule a deletion for all the current children by + // passing null. + workInProgress.child = reconcileChildFibers(workInProgress, current.child, null, renderLanes); // In the second pass, we mount the new children. The trick here is that we + // pass null in place of where we usually pass the current child set. This has + // the effect of remounting all children regardless of whether their + // identities match. + + workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderLanes); +} - update.callback = function () { - logUncaughtError(root, errorInfo); - }; +function updateForwardRef(current, workInProgress, Component, nextProps, renderLanes) { + // TODO: current can be non-null here even if the component + // hasn't yet mounted. This happens after the first render suspends. + // We'll need to figure out if this is fine or can cause issues. + var render = Component.render; + var ref = workInProgress.ref; + var propsWithoutRef; - return update; - } + { + propsWithoutRef = nextProps; + } // The rest is a fork of updateFunctionComponent - function createClassErrorUpdate(lane) { - var update = createUpdate(lane); - update.tag = CaptureUpdate; - return update; - } - function initializeClassErrorUpdate(update, root, fiber, errorInfo) { - var getDerivedStateFromError = fiber.type.getDerivedStateFromError; + var nextChildren; + prepareToReadContext(workInProgress, renderLanes); - if (typeof getDerivedStateFromError === "function") { - var error$1 = errorInfo.value; + { + markComponentRenderStarted(workInProgress); + } - update.payload = function () { - return getDerivedStateFromError(error$1); - }; + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + nextChildren = renderWithHooks(current, workInProgress, render, propsWithoutRef, ref, renderLanes); + setIsRendering(false); + } - update.callback = function () { - { - markFailedErrorBoundaryForHotReloading(fiber); - } + { + markComponentRenderStopped(); + } - logCaughtError(root, fiber, errorInfo); - }; - } + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - var inst = fiber.stateNode; - if (inst !== null && typeof inst.componentDidCatch === "function") { - // $FlowFixMe[missing-this-annot] - update.callback = function callback() { - { - markFailedErrorBoundaryForHotReloading(fiber); - } + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - logCaughtError(root, fiber, errorInfo); +function updateMemoComponent(current, workInProgress, Component, nextProps, renderLanes) { + if (current === null) { + var type = Component.type; - if (typeof getDerivedStateFromError !== "function") { - // To preserve the preexisting retry behavior of error boundaries, - // we keep track of which ones already failed during this batch. - // This gets reset before we yield back to the browser. - // TODO: Warn in strict mode if getDerivedStateFromError is - // not defined. - markLegacyErrorBoundaryAsFailed(this); - } + if (isSimpleFunctionComponent(type) && Component.compare === null && ( // SimpleMemoComponent codepath doesn't resolve outer props either. + Component.defaultProps === undefined)) { + var resolvedType = type; - var error$1 = errorInfo.value; - var stack = errorInfo.stack; - this.componentDidCatch(error$1, { - componentStack: stack !== null ? stack : "" - }); + { + resolvedType = resolveFunctionForHotReloading(type); + } // If this is a plain function component without default props, + // and with only the default shallow comparison, we upgrade it + // to a SimpleMemoComponent to allow fast path updates. - { - if (typeof getDerivedStateFromError !== "function") { - // If componentDidCatch is the only error boundary method defined, - // then it needs to call setState to recover from errors. - // If no state update is scheduled then the boundary will swallow the error. - if (!includesSomeLane(fiber.lanes, SyncLane)) { - error( - "%s: Error boundaries should implement getDerivedStateFromError(). " + - "In that method, return a state update to display an error message or fallback UI.", - getComponentNameFromFiber(fiber) || "Unknown" - ); - } - } - } - }; + + workInProgress.tag = SimpleMemoComponent; + workInProgress.type = resolvedType; + + { + validateFunctionComponentInDev(workInProgress, type); } - } - function resetSuspendedComponent(sourceFiber, rootRenderLanes) { - // A legacy mode Suspense quirk, only relevant to hook components. + return updateSimpleMemoComponent(current, workInProgress, resolvedType, nextProps, renderLanes); + } - var tag = sourceFiber.tag; + { + { + if (Component.defaultProps !== undefined) { + var componentName = getComponentNameFromType(type) || 'Unknown'; - if ( - (sourceFiber.mode & ConcurrentMode) === NoMode && - (tag === FunctionComponent || - tag === ForwardRef || - tag === SimpleMemoComponent) - ) { - var currentSource = sourceFiber.alternate; + if (!didWarnAboutDefaultPropsOnFunctionComponent[componentName]) { + error('%s: Support for defaultProps will be removed from memo components ' + 'in a future major release. Use JavaScript default parameters instead.', componentName); - if (currentSource) { - sourceFiber.updateQueue = currentSource.updateQueue; - sourceFiber.memoizedState = currentSource.memoizedState; - sourceFiber.lanes = currentSource.lanes; - } else { - sourceFiber.updateQueue = null; - sourceFiber.memoizedState = null; + didWarnAboutDefaultPropsOnFunctionComponent[componentName] = true; + } } } } - function markSuspenseBoundaryShouldCapture( - suspenseBoundary, - returnFiber, - sourceFiber, - root, - rootRenderLanes - ) { - // This marks a Suspense boundary so that when we're unwinding the stack, - // it captures the suspended "exception" and does a second (fallback) pass. - if ((suspenseBoundary.mode & ConcurrentMode) === NoMode) { - // Legacy Mode Suspense - // - // If the boundary is in legacy mode, we should *not* - // suspend the commit. Pretend as if the suspended component rendered - // null and keep rendering. When the Suspense boundary completes, - // we'll do a second pass to render the fallback. - if (suspenseBoundary === returnFiber) { - // Special case where we suspended while reconciling the children of - // a Suspense boundary's inner Offscreen wrapper fiber. This happens - // when a React.lazy component is a direct child of a - // Suspense boundary. - // - // Suspense boundaries are implemented as multiple fibers, but they - // are a single conceptual unit. The legacy mode behavior where we - // pretend the suspended fiber committed as `null` won't work, - // because in this case the "suspended" fiber is the inner - // Offscreen wrapper. - // - // Because the contents of the boundary haven't started rendering - // yet (i.e. nothing in the tree has partially rendered) we can - // switch to the regular, concurrent mode behavior: mark the - // boundary with ShouldCapture and enter the unwind phase. - suspenseBoundary.flags |= ShouldCapture; - } else { - suspenseBoundary.flags |= DidCapture; - sourceFiber.flags |= ForceUpdateForLegacySuspense; // We're going to commit this fiber even though it didn't complete. - // But we shouldn't call any lifecycle methods or callbacks. Remove - // all lifecycle effect tags. + var child = createFiberFromTypeAndProps(Component.type, null, nextProps, workInProgress, workInProgress.mode, renderLanes); + child.ref = workInProgress.ref; + child.return = workInProgress; + workInProgress.child = child; + return child; + } - sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete); + var currentChild = current.child; // This is always exactly one child - if (sourceFiber.tag === ClassComponent) { - var currentSourceFiber = sourceFiber.alternate; + var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext(current, renderLanes); - if (currentSourceFiber === null) { - // This is a new mount. Change the tag so it's not mistaken for a - // completed class component. For example, we should not call - // componentWillUnmount if it is deleted. - sourceFiber.tag = IncompleteClassComponent; - } else { - // When we try rendering again, we should not reuse the current fiber, - // since it's known to be in an inconsistent state. Use a force update to - // prevent a bail out. - var update = createUpdate(SyncLane); - update.tag = ForceUpdate; - enqueueUpdate(sourceFiber, update, SyncLane); - } - } else if (sourceFiber.tag === FunctionComponent) { - var _currentSourceFiber = sourceFiber.alternate; + if (!hasScheduledUpdateOrContext) { + // This will be the props with resolved defaultProps, + // unlike current.memoizedProps which will be the unresolved ones. + var prevProps = currentChild.memoizedProps; // Default to shallow comparison - if (_currentSourceFiber === null) { - // This is a new mount. Change the tag so it's not mistaken for a - // completed function component. - sourceFiber.tag = IncompleteFunctionComponent; - } - } // The source fiber did not complete. Mark it with Sync priority to - // indicate that it still has pending work. + var compare = Component.compare; + compare = compare !== null ? compare : shallowEqual; - sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); - } + if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } + } // React DevTools reads this flag. - return suspenseBoundary; - } // Confirmed that the boundary is in a concurrent mode tree. Continue - // with the normal suspend path. - // - // After this we'll use a set of heuristics to determine whether this - // render pass will run to completion or restart or "suspend" the commit. - // The actual logic for this is spread out in different places. - // - // This first principle is that if we're going to suspend when we complete - // a root, then we should also restart if we get an update or ping that - // might unsuspend it, and vice versa. The only reason to suspend is - // because you think you might want to restart before committing. However, - // it doesn't make sense to restart only while in the period we're suspended. - // - // Restarting too aggressively is also not good because it starves out any - // intermediate loading state. So we use heuristics to determine when. - // Suspense Heuristics - // - // If nothing threw a Promise or all the same fallbacks are already showing, - // then don't suspend/restart. - // - // If this is an initial render of a new tree of Suspense boundaries and - // those trigger a fallback, then don't suspend/restart. We want to ensure - // that we can show the initial loading state as quickly as possible. - // - // If we hit a "Delayed" case, such as when we'd switch from content back into - // a fallback, then we should always suspend/restart. Transitions apply - // to this case. If none is defined, JND is used instead. - // - // If we're already showing a fallback and it gets "retried", allowing us to show - // another level, but there's still an inner boundary that would show a fallback, - // then we suspend/restart for 500ms since the last time we showed a fallback - // anywhere in the tree. This effectively throttles progressive loading into a - // consistent train of commits. This also gives us an opportunity to restart to - // get to the completed state slightly earlier. + + workInProgress.flags |= PerformedWork; + var newChild = createWorkInProgress(currentChild, nextProps); + newChild.ref = workInProgress.ref; + newChild.return = workInProgress; + workInProgress.child = newChild; + return newChild; +} + +function updateSimpleMemoComponent(current, workInProgress, Component, nextProps, renderLanes) { + // TODO: current can be non-null here even if the component + // hasn't yet mounted. This happens when the inner render suspends. + // We'll need to figure out if this is fine or can cause issues. + if (current !== null) { + var prevProps = current.memoizedProps; + + if (shallowEqual(prevProps, nextProps) && current.ref === workInProgress.ref && ( // Prevent bailout if the implementation changed due to hot reload. + workInProgress.type === current.type )) { + didReceiveUpdate = false; // The props are shallowly equal. Reuse the previous props object, like we + // would during a normal fiber bailout. // - // If there's ambiguity due to batching it's resolved in preference of: - // 1) "delayed", 2) "initial render", 3) "retry". + // We don't have strong guarantees that the props object is referentially + // equal during updates where we can't bail out anyway — like if the props + // are shallowly equal, but there's a local state or context update in the + // same batch. // - // We want to ensure that a "busy" state doesn't get force committed. We want to - // ensure that new initial loading states can commit as soon as possible. - - suspenseBoundary.flags |= ShouldCapture; // TODO: I think we can remove this, since we now use `DidCapture` in - // the begin phase to prevent an early bailout. - - suspenseBoundary.lanes = rootRenderLanes; - return suspenseBoundary; - } - - function throwException( - root, - returnFiber, - sourceFiber, - value, - rootRenderLanes - ) { - // The source fiber did not complete. - sourceFiber.flags |= Incomplete; - - if (value !== null && typeof value === "object") { - if (typeof value.then === "function") { - // This is a wakeable. The component suspended. - var wakeable = value; - resetSuspendedComponent(sourceFiber); - - var suspenseBoundary = getSuspenseHandler(); - - if (suspenseBoundary !== null) { - switch (suspenseBoundary.tag) { - case SuspenseComponent: { - // If this suspense boundary is not already showing a fallback, mark - // the in-progress render as suspended. We try to perform this logic - // as soon as soon as possible during the render phase, so the work - // loop can know things like whether it's OK to switch to other tasks, - // or whether it can wait for data to resolve before continuing. - // TODO: Most of these checks are already performed when entering a - // Suspense boundary. We should track the information on the stack so - // we don't have to recompute it on demand. This would also allow us - // to unify with `use` which needs to perform this logic even sooner, - // before `throwException` is called. - if (sourceFiber.mode & ConcurrentMode) { - if (getShellBoundary() === null) { - // Suspended in the "shell" of the app. This is an undesirable - // loading state. We should avoid committing this tree. - renderDidSuspendDelayIfPossible(); - } else { - // If we suspended deeper than the shell, we don't need to delay - // the commmit. However, we still call renderDidSuspend if this is - // a new boundary, to tell the work loop that a new fallback has - // appeared during this render. - // TODO: Theoretically we should be able to delete this branch. - // It's currently used for two things: 1) to throttle the - // appearance of successive loading states, and 2) in - // SuspenseList, to determine whether the children include any - // pending fallbacks. For 1, we should apply throttling to all - // retries, not just ones that render an additional fallback. For - // 2, we should check subtreeFlags instead. Then we can delete - // this branch. - var current = suspenseBoundary.alternate; - - if (current === null) { - renderDidSuspend(); - } - } - } + // However, as a principle, we should aim to make the behavior consistent + // across different ways of memoizing a component. For example, React.memo + // has a different internal Fiber layout if you pass a normal function + // component (SimpleMemoComponent) versus if you pass a different type + // like forwardRef (MemoComponent). But this is an implementation detail. + // Wrapping a component in forwardRef (or React.lazy, etc) shouldn't + // affect whether the props object is reused during a bailout. + + workInProgress.pendingProps = nextProps = prevProps; + + if (!checkScheduledUpdateOrContext(current, renderLanes)) { + // The pending lanes were cleared at the beginning of beginWork. We're + // about to bail out, but there might be other lanes that weren't + // included in the current render. Usually, the priority level of the + // remaining updates is accumulated during the evaluation of the + // component (i.e. when processing the update queue). But since since + // we're bailing out early *without* evaluating the component, we need + // to account for it here, too. Reset to the value of the current fiber. + // NOTE: This only applies to SimpleMemoComponent, not MemoComponent, + // because a MemoComponent fiber does not have hooks or an update queue; + // rather, it wraps around an inner component, which may or may not + // contains hooks. + // TODO: Move the reset at in beginWork out of the common path so that + // this is no longer necessary. + workInProgress.lanes = current.lanes; + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } else if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { + // This is a special case that only exists for legacy mode. + // See https://github.com/facebook/react/pull/19216. + didReceiveUpdate = true; + } + } + } - suspenseBoundary.flags &= ~ForceClientRender; - markSuspenseBoundaryShouldCapture( - suspenseBoundary, - returnFiber, - sourceFiber, - root, - rootRenderLanes - ); // Retry listener - // - // If the fallback does commit, we need to attach a different type of - // listener. This one schedules an update on the Suspense boundary to - // turn the fallback state off. - // - // Stash the wakeable on the boundary fiber so we can access it in the - // commit phase. - // - // When the wakeable resolves, we'll attempt to render the boundary - // again ("retry"). - // Check if this is a Suspensey resource. We do not attach retry - // listeners to these, because we don't actually need them for - // rendering. Only for committing. Instead, if a fallback commits - // and the only thing that suspended was a Suspensey resource, we - // retry immediately. - // TODO: Refactor throwException so that we don't have to do this type - // check. The caller already knows what the cause was. - - var isSuspenseyResource = - wakeable === noopSuspenseyCommitThenable; - - if (isSuspenseyResource) { - suspenseBoundary.flags |= ScheduleRetry; - } else { - var retryQueue = suspenseBoundary.updateQueue; + return updateFunctionComponent(current, workInProgress, Component, nextProps, renderLanes); +} - if (retryQueue === null) { - suspenseBoundary.updateQueue = new Set([wakeable]); - } else { - retryQueue.add(wakeable); - } // We only attach ping listeners in concurrent mode. Legacy - // Suspense always commits fallbacks synchronously, so there are - // no pings. +function updateOffscreenComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; + var nextChildren = nextProps.children; + var nextIsDetached = (workInProgress.stateNode._pendingVisibility & OffscreenDetached) !== 0; + var prevState = current !== null ? current.memoizedState : null; + markRef(current, workInProgress); - if (suspenseBoundary.mode & ConcurrentMode) { - attachPingListener(root, wakeable, rootRenderLanes); - } - } + if (nextProps.mode === 'hidden' || enableLegacyHidden || nextIsDetached) { + // Rendering a hidden tree. + var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; - return false; - } + if (didSuspend) { + // Something suspended inside a hidden tree + // Include the base lanes from the last render + var nextBaseLanes = prevState !== null ? mergeLanes(prevState.baseLanes, renderLanes) : renderLanes; - case OffscreenComponent: { - if (suspenseBoundary.mode & ConcurrentMode) { - suspenseBoundary.flags |= ShouldCapture; + if (current !== null) { + // Reset to the current children + var currentChild = workInProgress.child = current.child; // The current render suspended, but there may be other lanes with + // pending work. We can't read `childLanes` from the current Offscreen + // fiber because we reset it when it was deferred; however, we can read + // the pending lanes from the child fibers. - var _isSuspenseyResource = - wakeable === noopSuspenseyCommitThenable; + var currentChildLanes = NoLanes; - if (_isSuspenseyResource) { - suspenseBoundary.flags |= ScheduleRetry; - } else { - var offscreenQueue = suspenseBoundary.updateQueue; - - if (offscreenQueue === null) { - var newOffscreenQueue = { - transitions: null, - markerInstances: null, - retryQueue: new Set([wakeable]) - }; - suspenseBoundary.updateQueue = newOffscreenQueue; - } else { - var _retryQueue = offscreenQueue.retryQueue; + while (currentChild !== null) { + currentChildLanes = mergeLanes(mergeLanes(currentChildLanes, currentChild.lanes), currentChild.childLanes); + currentChild = currentChild.sibling; + } - if (_retryQueue === null) { - offscreenQueue.retryQueue = new Set([wakeable]); - } else { - _retryQueue.add(wakeable); - } - } + var lanesWeJustAttempted = nextBaseLanes; + var remainingChildLanes = removeLanes(currentChildLanes, lanesWeJustAttempted); + workInProgress.childLanes = remainingChildLanes; + } else { + workInProgress.childLanes = NoLanes; + workInProgress.child = null; + } - attachPingListener(root, wakeable, rootRenderLanes); - } + return deferHiddenOffscreenComponent(current, workInProgress, nextBaseLanes); + } - return false; - } - } - } + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + // In legacy sync mode, don't defer the subtree. Render it now. + // TODO: Consider how Offscreen should work with transitions in the future + var nextState = { + baseLanes: NoLanes, + cachePool: null + }; + workInProgress.memoizedState = nextState; - throw new Error( - "Unexpected Suspense handler tag (" + - suspenseBoundary.tag + - "). This " + - "is a bug in React." - ); - } else { - // No boundary was found. Unless this is a sync update, this is OK. - // We can suspend and wait for more data to arrive. - if (root.tag === ConcurrentRoot) { - // In a concurrent root, suspending without a Suspense boundary is - // allowed. It will suspend indefinitely without committing. - // - // TODO: Should we have different behavior for discrete updates? What - // about flushSync? Maybe it should put the tree into an inert state, - // and potentially log a warning. Revisit this for a future release. - attachPingListener(root, wakeable, rootRenderLanes); - renderDidSuspendDelayIfPossible(); - return false; - } else { - // In a legacy root, suspending without a boundary is always an error. - var uncaughtSuspenseError = new Error( - "A component suspended while responding to synchronous input. This " + - "will cause the UI to be replaced with a loading indicator. To " + - "fix, updates that suspend should be wrapped " + - "with startTransition." - ); - value = uncaughtSuspenseError; - } - } + { + // push the cache pool even though we're going to bail out + // because otherwise there'd be a context mismatch + if (current !== null) { + pushTransition(workInProgress, null); } - } // This is a regular error, not a Suspense wakeable. + } - var wrapperError = new Error( - "There was an error during concurrent rendering but React was able to recover by " + - "instead synchronously rendering the entire root.", - { - cause: value - } - ); - queueConcurrentError( - createCapturedValueAtFiber(wrapperError, sourceFiber) - ); - renderDidError(); // We didn't find a boundary that could handle this type of exception. Start - // over and traverse parent path again, this time treating the exception - // as an error. - - if (returnFiber === null) { - // There's no return fiber, which means the root errored. This should never - // happen. Return `true` to trigger a fatal error (panic). - return true; + reuseHiddenContextOnStack(workInProgress); + pushOffscreenSuspenseHandler(workInProgress); + } else if (!includesSomeLane(renderLanes, OffscreenLane)) { + // We're hidden, and we're not rendering at Offscreen. We will bail out + // and resume this tree later. + // Schedule this fiber to re-render at Offscreen priority + workInProgress.lanes = workInProgress.childLanes = laneToLanes(OffscreenLane); // Include the base lanes from the last render + + var _nextBaseLanes = prevState !== null ? mergeLanes(prevState.baseLanes, renderLanes) : renderLanes; + + return deferHiddenOffscreenComponent(current, workInProgress, _nextBaseLanes); + } else { + // This is the second render. The surrounding visible content has already + // committed. Now we resume rendering the hidden tree. + // Rendering at offscreen, so we can clear the base lanes. + var _nextState = { + baseLanes: NoLanes, + cachePool: null + }; + workInProgress.memoizedState = _nextState; + + if (current !== null) { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + var prevCachePool = prevState !== null ? prevState.cachePool : null; // TODO: Consider if and how Offscreen pre-rendering should + // be attributed to the transition that spawned it + + pushTransition(workInProgress, prevCachePool); + } // Push the lanes that were skipped when we bailed out. + + + if (prevState !== null) { + pushHiddenContext(workInProgress, prevState); + } else { + reuseHiddenContextOnStack(workInProgress); + } + + pushOffscreenSuspenseHandler(workInProgress); + } + } else { + // Rendering a visible tree. + if (prevState !== null) { + // We're going from hidden -> visible. + var _prevCachePool = null; + + { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + _prevCachePool = prevState.cachePool; } - var errorInfo = createCapturedValueAtFiber(value, sourceFiber); - var workInProgress = returnFiber; + pushTransition(workInProgress, _prevCachePool); // Push the lanes that were skipped when we bailed out. - do { - switch (workInProgress.tag) { - case HostRoot: { - workInProgress.flags |= ShouldCapture; + pushHiddenContext(workInProgress, prevState); + reuseSuspenseHandlerOnStack(workInProgress); // Since we're not hidden anymore, reset the state + + workInProgress.memoizedState = null; + } else { + // We weren't previously hidden, and we still aren't, so there's nothing + // special to do. Need to push to the stack regardless, though, to avoid + // a push/pop misalignment. + { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + if (current !== null) { + pushTransition(workInProgress, null); + } + } // We're about to bail out, but we need to push this to the stack anyway + // to avoid a push/pop misalignment. - var _lane = pickArbitraryLane(rootRenderLanes); - workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane); + reuseHiddenContextOnStack(workInProgress); + reuseSuspenseHandlerOnStack(workInProgress); + } + } - var _update = createRootErrorUpdate( - workInProgress.stateNode, - errorInfo, - _lane - ); + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - enqueueCapturedUpdate(workInProgress, _update); - return false; - } +function deferHiddenOffscreenComponent(current, workInProgress, nextBaseLanes, renderLanes) { + var nextState = { + baseLanes: nextBaseLanes, + // Save the cache pool so we can resume later. + cachePool: getOffscreenDeferredCache() + }; + workInProgress.memoizedState = nextState; - case ClassComponent: - // Capture and retry - var ctor = workInProgress.type; - var instance = workInProgress.stateNode; - - if ( - (workInProgress.flags & DidCapture) === NoFlags$1 && - (typeof ctor.getDerivedStateFromError === "function" || - (instance !== null && - typeof instance.componentDidCatch === "function" && - !isAlreadyFailedLegacyErrorBoundary(instance))) - ) { - workInProgress.flags |= ShouldCapture; - - var _lane2 = pickArbitraryLane(rootRenderLanes); - - workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane2); // Schedule the error boundary to re-render using updated state - - var _update2 = createClassErrorUpdate(_lane2); - - initializeClassErrorUpdate( - _update2, - root, - workInProgress, - errorInfo - ); - enqueueCapturedUpdate(workInProgress, _update2); - return false; - } + { + // push the cache pool even though we're going to bail out + // because otherwise there'd be a context mismatch + if (current !== null) { + pushTransition(workInProgress, null); + } + } // We're about to bail out, but we need to push this to the stack anyway + // to avoid a push/pop misalignment. - break; - } // $FlowFixMe[incompatible-type] we bail out when we get a null - workInProgress = workInProgress.return; - } while (workInProgress !== null); + reuseHiddenContextOnStack(workInProgress); + pushOffscreenSuspenseHandler(workInProgress); - return false; - } + return null; +} // Note: These happen to have identical begin phases, for now. We shouldn't hold - // into a dehydrated boundary. +function updateCacheComponent(current, workInProgress, renderLanes) { - var SelectiveHydrationException = new Error( - "This is not a real error. It's an implementation detail of React's " + - "selective hydration feature. If this leaks into userspace, it's a bug in " + - "React. Please file an issue." - ); - var didReceiveUpdate = false; - var didWarnAboutBadClass; - var didWarnAboutContextTypeOnFunctionComponent; - var didWarnAboutGetDerivedStateOnFunctionComponent; - var didWarnAboutFunctionRefs; - var didWarnAboutReassigningProps; - var didWarnAboutRevealOrder; - var didWarnAboutTailOptions; - var didWarnAboutDefaultPropsOnFunctionComponent; + prepareToReadContext(workInProgress, renderLanes); + var parentCache = readContext(CacheContext); - { - didWarnAboutBadClass = {}; - didWarnAboutContextTypeOnFunctionComponent = {}; - didWarnAboutGetDerivedStateOnFunctionComponent = {}; - didWarnAboutFunctionRefs = {}; - didWarnAboutReassigningProps = false; - didWarnAboutRevealOrder = {}; - didWarnAboutTailOptions = {}; - didWarnAboutDefaultPropsOnFunctionComponent = {}; - } - - function reconcileChildren( - current, - workInProgress, - nextChildren, - renderLanes - ) { - if (current === null) { - // If this is a fresh new component that hasn't been rendered yet, we - // won't update its child set by applying minimal side-effects. Instead, - // we will add them all to the child before it gets rendered. That means - // we can optimize this reconciliation pass by not tracking side-effects. - workInProgress.child = mountChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } else { - // If the current child is the same as the work in progress, it means that - // we haven't yet started any work on these children. Therefore, we use - // the clone algorithm to create a copy of all the current children. - // If we had any progressed work already, that is invalid at this point so - // let's throw it out. - workInProgress.child = reconcileChildFibers( - workInProgress, - current.child, - nextChildren, - renderLanes - ); - } - } - - function forceUnmountCurrentAndReconcile( - current, - workInProgress, - nextChildren, - renderLanes - ) { - // This function is fork of reconcileChildren. It's used in cases where we - // want to reconcile without matching against the existing set. This has the - // effect of all current children being unmounted; even if the type and key - // are the same, the old child is unmounted and a new child is created. - // - // To do this, we're going to go through the reconcile algorithm twice. In - // the first pass, we schedule a deletion for all the current children by - // passing null. - workInProgress.child = reconcileChildFibers( - workInProgress, - current.child, - null, - renderLanes - ); // In the second pass, we mount the new children. The trick here is that we - // pass null in place of where we usually pass the current child set. This has - // the effect of remounting all children regardless of whether their - // identities match. - - workInProgress.child = reconcileChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } - - function updateForwardRef( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - // TODO: current can be non-null here even if the component - // hasn't yet mounted. This happens after the first render suspends. - // We'll need to figure out if this is fine or can cause issues. - var render = Component.render; - var ref = workInProgress.ref; - var propsWithoutRef; + if (current === null) { + // Initial mount. Request a fresh cache from the pool. + var freshCache = requestCacheFromPool(renderLanes); + var initialState = { + parent: parentCache, + cache: freshCache + }; + workInProgress.memoizedState = initialState; + initializeUpdateQueue(workInProgress); + pushCacheProvider(workInProgress, freshCache); + } else { + // Check for updates + if (includesSomeLane(current.lanes, renderLanes)) { + cloneUpdateQueue(current, workInProgress); + processUpdateQueue(workInProgress, null, null, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + } - { - propsWithoutRef = nextProps; - } // The rest is a fork of updateFunctionComponent + var prevState = current.memoizedState; + var nextState = workInProgress.memoizedState; // Compare the new parent cache to the previous to see detect there was + // a refresh. - var nextChildren; - prepareToReadContext(workInProgress, renderLanes); + if (prevState.parent !== parentCache) { + // Refresh in parent. Update the parent. + var derivedState = { + parent: parentCache, + cache: parentCache + }; // Copied from getDerivedStateFromProps implementation. Once the update + // queue is empty, persist the derived state onto the base state. - { - markComponentRenderStarted(workInProgress); - } + workInProgress.memoizedState = derivedState; - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - nextChildren = renderWithHooks( - current, - workInProgress, - render, - propsWithoutRef, - ref, - renderLanes - ); - setIsRendering(false); + if (workInProgress.lanes === NoLanes) { + var updateQueue = workInProgress.updateQueue; + workInProgress.memoizedState = updateQueue.baseState = derivedState; } - { - markComponentRenderStopped(); - } + pushCacheProvider(workInProgress, parentCache); // No need to propagate a context change because the refreshed parent + // already did. + } else { + // The parent didn't refresh. Now check if this cache did. + var nextCache = nextState.cache; + pushCacheProvider(workInProgress, nextCache); - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); + if (nextCache !== prevState.cache) { + // This cache refreshed. Propagate a context change. + propagateContextChange(workInProgress, CacheContext, renderLanes); } - - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; } + } - function updateMemoComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - if (current === null) { - var type = Component.type; + var nextChildren = workInProgress.pendingProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} // This should only be called if the name changes - if ( - isSimpleFunctionComponent(type) && - Component.compare === null && // SimpleMemoComponent codepath doesn't resolve outer props either. - Component.defaultProps === undefined - ) { - var resolvedType = type; +function updateFragment(current, workInProgress, renderLanes) { + var nextChildren = workInProgress.pendingProps; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - { - resolvedType = resolveFunctionForHotReloading(type); - } // If this is a plain function component without default props, - // and with only the default shallow comparison, we upgrade it - // to a SimpleMemoComponent to allow fast path updates. +function updateMode(current, workInProgress, renderLanes) { + var nextChildren = workInProgress.pendingProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - workInProgress.tag = SimpleMemoComponent; - workInProgress.type = resolvedType; +function updateProfiler(current, workInProgress, renderLanes) { + { + workInProgress.flags |= Update; - { - validateFunctionComponentInDev(workInProgress, type); - } + { + // Reset effect durations for the next eventual effect phase. + // These are reset during render to allow the DevTools commit hook a chance to read them, + var stateNode = workInProgress.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; + } + } + + var nextProps = workInProgress.pendingProps; + var nextChildren = nextProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - return updateSimpleMemoComponent( - current, - workInProgress, - resolvedType, - nextProps, - renderLanes - ); - } +function markRef(current, workInProgress) { + // TODO: Check props.ref instead of fiber.ref when enableRefAsProp is on. + var ref = workInProgress.ref; - { - { - if (Component.defaultProps !== undefined) { - var componentName = getComponentNameFromType(type) || "Unknown"; - - if (!didWarnAboutDefaultPropsOnFunctionComponent[componentName]) { - error( - "%s: Support for defaultProps will be removed from memo components " + - "in a future major release. Use JavaScript default parameters instead.", - componentName - ); - - didWarnAboutDefaultPropsOnFunctionComponent[componentName] = - true; - } - } - } - } + if (ref === null) { + if (current !== null && current.ref !== null) { + // Schedule a Ref effect + workInProgress.flags |= Ref | RefStatic; + } + } else { + if (typeof ref !== 'function' && typeof ref !== 'object') { + throw new Error('Expected ref to be a function, an object returned by React.createRef(), or undefined/null.'); + } - var child = createFiberFromTypeAndProps( - Component.type, - null, - nextProps, - workInProgress, - workInProgress.mode, - renderLanes - ); - child.ref = workInProgress.ref; - child.return = workInProgress; - workInProgress.child = child; - return child; - } - - var currentChild = current.child; // This is always exactly one child - - var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( - current, - renderLanes - ); - - if (!hasScheduledUpdateOrContext) { - // This will be the props with resolved defaultProps, - // unlike current.memoizedProps which will be the unresolved ones. - var prevProps = currentChild.memoizedProps; // Default to shallow comparison - - var compare = Component.compare; - compare = compare !== null ? compare : shallowEqual; - - if ( - compare(prevProps, nextProps) && - current.ref === workInProgress.ref - ) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } - } // React DevTools reads this flag. - - workInProgress.flags |= PerformedWork; - var newChild = createWorkInProgress(currentChild, nextProps); - newChild.ref = workInProgress.ref; - newChild.return = workInProgress; - workInProgress.child = newChild; - return newChild; - } - - function updateSimpleMemoComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - // TODO: current can be non-null here even if the component - // hasn't yet mounted. This happens when the inner render suspends. - // We'll need to figure out if this is fine or can cause issues. + if (current === null || current.ref !== ref) { if (current !== null) { - var prevProps = current.memoizedProps; - - if ( - shallowEqual(prevProps, nextProps) && - current.ref === workInProgress.ref && // Prevent bailout if the implementation changed due to hot reload. - workInProgress.type === current.type - ) { - didReceiveUpdate = false; // The props are shallowly equal. Reuse the previous props object, like we - // would during a normal fiber bailout. - // - // We don't have strong guarantees that the props object is referentially - // equal during updates where we can't bail out anyway — like if the props - // are shallowly equal, but there's a local state or context update in the - // same batch. - // - // However, as a principle, we should aim to make the behavior consistent - // across different ways of memoizing a component. For example, React.memo - // has a different internal Fiber layout if you pass a normal function - // component (SimpleMemoComponent) versus if you pass a different type - // like forwardRef (MemoComponent). But this is an implementation detail. - // Wrapping a component in forwardRef (or React.lazy, etc) shouldn't - // affect whether the props object is reused during a bailout. - - workInProgress.pendingProps = nextProps = prevProps; - - if (!checkScheduledUpdateOrContext(current, renderLanes)) { - // The pending lanes were cleared at the beginning of beginWork. We're - // about to bail out, but there might be other lanes that weren't - // included in the current render. Usually, the priority level of the - // remaining updates is accumulated during the evaluation of the - // component (i.e. when processing the update queue). But since since - // we're bailing out early *without* evaluating the component, we need - // to account for it here, too. Reset to the value of the current fiber. - // NOTE: This only applies to SimpleMemoComponent, not MemoComponent, - // because a MemoComponent fiber does not have hooks or an update queue; - // rather, it wraps around an inner component, which may or may not - // contains hooks. - // TODO: Move the reset at in beginWork out of the common path so that - // this is no longer necessary. - workInProgress.lanes = current.lanes; - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } else if ( - (current.flags & ForceUpdateForLegacySuspense) !== - NoFlags$1 - ) { - // This is a special case that only exists for legacy mode. - // See https://github.com/facebook/react/pull/19216. - didReceiveUpdate = true; - } + var oldRef = current.ref; + var newRef = ref; + + if (typeof oldRef === 'function' && typeof newRef === 'function' && typeof oldRef.__stringRef === 'string' && oldRef.__stringRef === newRef.__stringRef && oldRef.__stringRefType === newRef.__stringRefType && oldRef.__stringRefOwner === newRef.__stringRefOwner) { + // Although this is a different callback, it represents the same + // string ref. To avoid breaking old Meta code that relies on string + // refs only being attached once, reuse the old ref. This will + // prevent us from detaching and reattaching the ref on each update. + workInProgress.ref = oldRef; + return; } - } + } // Schedule a Ref effect + - return updateFunctionComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ); + workInProgress.flags |= Ref | RefStatic; } + } +} - function updateOffscreenComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; - var nextChildren = nextProps.children; - var nextIsDetached = - (workInProgress.stateNode._pendingVisibility & OffscreenDetached) !== 0; - var prevState = current !== null ? current.memoizedState : null; - markRef(current, workInProgress); +function mountIncompleteFunctionComponent(_current, workInProgress, Component, nextProps, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); + workInProgress.tag = FunctionComponent; + return updateFunctionComponent(null, workInProgress, Component, nextProps, renderLanes); +} - if (nextProps.mode === "hidden" || enableLegacyHidden || nextIsDetached) { - // Rendering a hidden tree. - var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; +function updateFunctionComponent(current, workInProgress, Component, nextProps, renderLanes) { + { + if (Component.prototype && typeof Component.prototype.render === 'function') { + var componentName = getComponentNameFromType(Component) || 'Unknown'; - if (didSuspend) { - // Something suspended inside a hidden tree - // Include the base lanes from the last render - var nextBaseLanes = - prevState !== null - ? mergeLanes(prevState.baseLanes, renderLanes) - : renderLanes; + if (!didWarnAboutBadClass[componentName]) { + error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', componentName, componentName); - if (current !== null) { - // Reset to the current children - var currentChild = (workInProgress.child = current.child); // The current render suspended, but there may be other lanes with - // pending work. We can't read `childLanes` from the current Offscreen - // fiber because we reset it when it was deferred; however, we can read - // the pending lanes from the child fibers. - - var currentChildLanes = NoLanes; - - while (currentChild !== null) { - currentChildLanes = mergeLanes( - mergeLanes(currentChildLanes, currentChild.lanes), - currentChild.childLanes - ); - currentChild = currentChild.sibling; - } + didWarnAboutBadClass[componentName] = true; + } + } - var lanesWeJustAttempted = nextBaseLanes; - var remainingChildLanes = removeLanes( - currentChildLanes, - lanesWeJustAttempted - ); - workInProgress.childLanes = remainingChildLanes; - } else { - workInProgress.childLanes = NoLanes; - workInProgress.child = null; - } + if (workInProgress.mode & StrictLegacyMode) { + ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null); + } - return deferHiddenOffscreenComponent( - current, - workInProgress, - nextBaseLanes - ); - } + if (current === null) { + // Some validations were previously done in mountIndeterminateComponent however and are now run + // in updateFuntionComponent but only on mount + validateFunctionComponentInDev(workInProgress, workInProgress.type); + } + } - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - // In legacy sync mode, don't defer the subtree. Render it now. - // TODO: Consider how Offscreen should work with transitions in the future - var nextState = { - baseLanes: NoLanes, - cachePool: null - }; - workInProgress.memoizedState = nextState; + var context; - { - // push the cache pool even though we're going to bail out - // because otherwise there'd be a context mismatch - if (current !== null) { - pushTransition(workInProgress, null); - } - } + { + var unmaskedContext = getUnmaskedContext(workInProgress, Component, true); + context = getMaskedContext(workInProgress, unmaskedContext); + } - reuseHiddenContextOnStack(workInProgress); - pushOffscreenSuspenseHandler(workInProgress); - } else if (!includesSomeLane(renderLanes, OffscreenLane)) { - // We're hidden, and we're not rendering at Offscreen. We will bail out - // and resume this tree later. - // Schedule this fiber to re-render at Offscreen priority - workInProgress.lanes = workInProgress.childLanes = - laneToLanes(OffscreenLane); // Include the base lanes from the last render - - var _nextBaseLanes = - prevState !== null - ? mergeLanes(prevState.baseLanes, renderLanes) - : renderLanes; - - return deferHiddenOffscreenComponent( - current, - workInProgress, - _nextBaseLanes - ); - } else { - // This is the second render. The surrounding visible content has already - // committed. Now we resume rendering the hidden tree. - // Rendering at offscreen, so we can clear the base lanes. - var _nextState = { - baseLanes: NoLanes, - cachePool: null - }; - workInProgress.memoizedState = _nextState; + var nextChildren; + prepareToReadContext(workInProgress, renderLanes); - if (current !== null) { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - var prevCachePool = prevState !== null ? prevState.cachePool : null; // TODO: Consider if and how Offscreen pre-rendering should - // be attributed to the transition that spawned it + { + markComponentRenderStarted(workInProgress); + } - pushTransition(workInProgress, prevCachePool); - } // Push the lanes that were skipped when we bailed out. + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + nextChildren = renderWithHooks(current, workInProgress, Component, nextProps, context, renderLanes); + setIsRendering(false); + } - if (prevState !== null) { - pushHiddenContext(workInProgress, prevState); - } else { - reuseHiddenContextOnStack(workInProgress); - } + { + markComponentRenderStopped(); + } - pushOffscreenSuspenseHandler(workInProgress); - } - } else { - // Rendering a visible tree. - if (prevState !== null) { - // We're going from hidden -> visible. - var _prevCachePool = null; + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - _prevCachePool = prevState.cachePool; - } - pushTransition(workInProgress, _prevCachePool); // Push the lanes that were skipped when we bailed out. + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - pushHiddenContext(workInProgress, prevState); - reuseSuspenseHandlerOnStack(workInProgress); // Since we're not hidden anymore, reset the state +function replayFunctionComponent(current, workInProgress, nextProps, Component, secondArg, renderLanes) { + // This function is used to replay a component that previously suspended, + // after its data resolves. It's a simplified version of + // updateFunctionComponent that reuses the hooks from the previous attempt. + prepareToReadContext(workInProgress, renderLanes); - workInProgress.memoizedState = null; - } else { - // We weren't previously hidden, and we still aren't, so there's nothing - // special to do. Need to push to the stack regardless, though, to avoid - // a push/pop misalignment. - { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - if (current !== null) { - pushTransition(workInProgress, null); - } - } // We're about to bail out, but we need to push this to the stack anyway - // to avoid a push/pop misalignment. + { + markComponentRenderStarted(workInProgress); + } - reuseHiddenContextOnStack(workInProgress); - reuseSuspenseHandlerOnStack(workInProgress); - } - } + var nextChildren = replaySuspendedComponentWithHooks(current, workInProgress, Component, nextProps, secondArg); - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + { + markComponentRenderStopped(); + } - function deferHiddenOffscreenComponent( - current, - workInProgress, - nextBaseLanes, - renderLanes - ) { - var nextState = { - baseLanes: nextBaseLanes, - // Save the cache pool so we can resume later. - cachePool: getOffscreenDeferredCache() - }; - workInProgress.memoizedState = nextState; + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - { - // push the cache pool even though we're going to bail out - // because otherwise there'd be a context mismatch - if (current !== null) { - pushTransition(workInProgress, null); - } - } // We're about to bail out, but we need to push this to the stack anyway - // to avoid a push/pop misalignment. - reuseHiddenContextOnStack(workInProgress); - pushOffscreenSuspenseHandler(workInProgress); + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - return null; - } // Note: These happen to have identical begin phases, for now. We shouldn't hold +function updateClassComponent(current, workInProgress, Component, nextProps, renderLanes) { + { + // This is used by DevTools to force a boundary to error. + switch (shouldError(workInProgress)) { + case false: + { + var _instance = workInProgress.stateNode; + var ctor = workInProgress.type; // TODO This way of resetting the error boundary state is a hack. + // Is there a better way to do this? - function updateCacheComponent(current, workInProgress, renderLanes) { - prepareToReadContext(workInProgress, renderLanes); - var parentCache = readContext(CacheContext); + var tempInstance = new ctor(workInProgress.memoizedProps, _instance.context); + var state = tempInstance.state; - if (current === null) { - // Initial mount. Request a fresh cache from the pool. - var freshCache = requestCacheFromPool(renderLanes); - var initialState = { - parent: parentCache, - cache: freshCache - }; - workInProgress.memoizedState = initialState; - initializeUpdateQueue(workInProgress); - pushCacheProvider(workInProgress, freshCache); - } else { - // Check for updates - if (includesSomeLane(current.lanes, renderLanes)) { - cloneUpdateQueue(current, workInProgress); - processUpdateQueue(workInProgress, null, null, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); + _instance.updater.enqueueSetState(_instance, state, null); + + break; } - var prevState = current.memoizedState; - var nextState = workInProgress.memoizedState; // Compare the new parent cache to the previous to see detect there was - // a refresh. - - if (prevState.parent !== parentCache) { - // Refresh in parent. Update the parent. - var derivedState = { - parent: parentCache, - cache: parentCache - }; // Copied from getDerivedStateFromProps implementation. Once the update - // queue is empty, persist the derived state onto the base state. - - workInProgress.memoizedState = derivedState; - - if (workInProgress.lanes === NoLanes) { - var updateQueue = workInProgress.updateQueue; - workInProgress.memoizedState = updateQueue.baseState = derivedState; - } + case true: + { + workInProgress.flags |= DidCapture; + workInProgress.flags |= ShouldCapture; // eslint-disable-next-line react-internal/prod-error-codes - pushCacheProvider(workInProgress, parentCache); // No need to propagate a context change because the refreshed parent - // already did. - } else { - // The parent didn't refresh. Now check if this cache did. - var nextCache = nextState.cache; - pushCacheProvider(workInProgress, nextCache); + var error$1 = new Error('Simulated error coming from DevTools'); + var lane = pickArbitraryLane(renderLanes); + workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); // Schedule the error boundary to re-render using updated state + + var root = getWorkInProgressRoot(); - if (nextCache !== prevState.cache) { - // This cache refreshed. Propagate a context change. - propagateContextChange(workInProgress, CacheContext, renderLanes); + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } + + var update = createClassErrorUpdate(lane); + initializeClassErrorUpdate(update, root, workInProgress, createCapturedValueAtFiber(error$1, workInProgress)); + enqueueCapturedUpdate(workInProgress, update); + break; } - } + } + } // Push context providers early to prevent context stack mismatches. + // During mounting we don't know the child context yet as the instance doesn't exist. + // We will invalidate the child context in finishClassComponent() right after rendering. - var nextChildren = workInProgress.pendingProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } // This should only be called if the name changes - function updateFragment(current, workInProgress, renderLanes) { - var nextChildren = workInProgress.pendingProps; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + var hasContext; - function updateMode(current, workInProgress, renderLanes) { - var nextChildren = workInProgress.pendingProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + if (isContextProvider(Component)) { + hasContext = true; + pushContextProvider(workInProgress); + } else { + hasContext = false; + } - function updateProfiler(current, workInProgress, renderLanes) { - { - workInProgress.flags |= Update; + prepareToReadContext(workInProgress, renderLanes); + var instance = workInProgress.stateNode; + var shouldUpdate; - { - // Reset effect durations for the next eventual effect phase. - // These are reset during render to allow the DevTools commit hook a chance to read them, - var stateNode = workInProgress.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } + if (instance === null) { + resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress); // In the initial pass we might need to construct the instance. + + constructClassInstance(workInProgress, Component, nextProps); + mountClassInstance(workInProgress, Component, nextProps, renderLanes); + shouldUpdate = true; + } else if (current === null) { + // In a resume, we'll already have an instance we can reuse. + shouldUpdate = resumeMountClassInstance(workInProgress, Component, nextProps, renderLanes); + } else { + shouldUpdate = updateClassInstance(current, workInProgress, Component, nextProps, renderLanes); + } + + var nextUnitOfWork = finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderLanes); + + { + var inst = workInProgress.stateNode; + + if (shouldUpdate && inst.props !== nextProps) { + if (!didWarnAboutReassigningProps) { + error('It looks like %s is reassigning its own `this.props` while rendering. ' + 'This is not supported and can lead to confusing bugs.', getComponentNameFromFiber(workInProgress) || 'a component'); } - var nextProps = workInProgress.pendingProps; - var nextChildren = nextProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + didWarnAboutReassigningProps = true; } + } - function markRef(current, workInProgress) { - // TODO: Check props.ref instead of fiber.ref when enableRefAsProp is on. - var ref = workInProgress.ref; + return nextUnitOfWork; +} - if (ref === null) { - if (current !== null && current.ref !== null) { - // Schedule a Ref effect - workInProgress.flags |= Ref | RefStatic; - } - } else { - if (typeof ref !== "function" && typeof ref !== "object") { - throw new Error( - "Expected ref to be a function, an object returned by React.createRef(), or undefined/null." - ); - } +function finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderLanes) { + // Refs should update even if shouldComponentUpdate returns false + markRef(current, workInProgress); + var didCaptureError = (workInProgress.flags & DidCapture) !== NoFlags$1; - if (current === null || current.ref !== ref) { - if (current !== null) { - var oldRef = current.ref; - var newRef = ref; - - if ( - typeof oldRef === "function" && - typeof newRef === "function" && - typeof oldRef.__stringRef === "string" && - oldRef.__stringRef === newRef.__stringRef && - oldRef.__stringRefType === newRef.__stringRefType && - oldRef.__stringRefOwner === newRef.__stringRefOwner - ) { - // Although this is a different callback, it represents the same - // string ref. To avoid breaking old Meta code that relies on string - // refs only being attached once, reuse the old ref. This will - // prevent us from detaching and reattaching the ref on each update. - workInProgress.ref = oldRef; - return; - } - } // Schedule a Ref effect + if (!shouldUpdate && !didCaptureError) { + // Context providers should defer to sCU for rendering + if (hasContext) { + invalidateContextProvider(workInProgress, Component, false); + } - workInProgress.flags |= Ref | RefStatic; - } - } + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } + + var instance = workInProgress.stateNode; // Rerender + + { + ReactSharedInternals.owner = workInProgress; + } + + var nextChildren; + + if (didCaptureError && typeof Component.getDerivedStateFromError !== 'function') { + // If we captured an error, but getDerivedStateFromError is not defined, + // unmount all the children. componentDidCatch will schedule an update to + // re-render a fallback. This is temporary until we migrate everyone to + // the new API. + // TODO: Warn in a future release. + nextChildren = null; + + { + stopProfilerTimerIfRunning(); + } + } else { + { + markComponentRenderStarted(workInProgress); } - function mountIncompleteFunctionComponent( - _current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); - workInProgress.tag = FunctionComponent; - return updateFunctionComponent( - null, - workInProgress, - Component, - nextProps, - renderLanes - ); - } - - function updateFunctionComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - { - if ( - Component.prototype && - typeof Component.prototype.render === "function" - ) { - var componentName = getComponentNameFromType(Component) || "Unknown"; - - if (!didWarnAboutBadClass[componentName]) { - error( - "The <%s /> component appears to have a render method, but doesn't extend React.Component. " + - "This is likely to cause errors. Change %s to extend React.Component instead.", - componentName, - componentName - ); + { + setIsRendering(true); + nextChildren = instance.render(); - didWarnAboutBadClass[componentName] = true; - } - } + setIsRendering(false); + } - if (workInProgress.mode & StrictLegacyMode) { - ReactStrictModeWarnings.recordLegacyContextWarning( - workInProgress, - null - ); - } + { + markComponentRenderStopped(); + } + } // React DevTools reads this flag. - if (current === null) { - // Some validations were previously done in mountIndeterminateComponent however and are now run - // in updateFuntionComponent but only on mount - validateFunctionComponentInDev(workInProgress, workInProgress.type); - } - } - var context; + workInProgress.flags |= PerformedWork; - { - var unmaskedContext = getUnmaskedContext( - workInProgress, - Component, - true - ); - context = getMaskedContext(workInProgress, unmaskedContext); - } + if (current !== null && didCaptureError) { + // If we're recovering from an error, reconcile without reusing any of + // the existing children. Conceptually, the normal children and the children + // that are shown on error are two different sets, so we shouldn't reuse + // normal children even if their identities match. + forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderLanes); + } else { + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } // Memoize state using the values we just used to render. + // TODO: Restructure so we never read values from the instance. - var nextChildren; - prepareToReadContext(workInProgress, renderLanes); - { - markComponentRenderStarted(workInProgress); - } + workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it. - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - nextChildren = renderWithHooks( - current, - workInProgress, - Component, - nextProps, - context, - renderLanes - ); - setIsRendering(false); - } + if (hasContext) { + invalidateContextProvider(workInProgress, Component, true); + } - { - markComponentRenderStopped(); - } + return workInProgress.child; +} - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } +function pushHostRootContext(workInProgress) { + var root = workInProgress.stateNode; - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + if (root.pendingContext) { + pushTopLevelContextObject(workInProgress, root.pendingContext, root.pendingContext !== root.context); + } else if (root.context) { + // Should always be set + pushTopLevelContextObject(workInProgress, root.context, false); + } - function replayFunctionComponent( - current, - workInProgress, - nextProps, - Component, - secondArg, - renderLanes - ) { - // This function is used to replay a component that previously suspended, - // after its data resolves. It's a simplified version of - // updateFunctionComponent that reuses the hooks from the previous attempt. - prepareToReadContext(workInProgress, renderLanes); + pushHostContainer(workInProgress, root.containerInfo); +} - { - markComponentRenderStarted(workInProgress); - } +function updateHostRoot(current, workInProgress, renderLanes) { + pushHostRootContext(workInProgress); - var nextChildren = replaySuspendedComponentWithHooks( - current, - workInProgress, - Component, - nextProps, - secondArg - ); + if (current === null) { + throw new Error('Should have a current fiber. This is a bug in React.'); + } - { - markComponentRenderStopped(); - } + var nextProps = workInProgress.pendingProps; + var prevState = workInProgress.memoizedState; + var prevChildren = prevState.element; + cloneUpdateQueue(current, workInProgress); + processUpdateQueue(workInProgress, nextProps, null, renderLanes); + var nextState = workInProgress.memoizedState; - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } + { + var nextCache = nextState.cache; + pushCacheProvider(workInProgress, nextCache); - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + if (nextCache !== prevState.cache) { + // The root cache refreshed. + propagateContextChange(workInProgress, CacheContext, renderLanes); } + } // This would ideally go inside processUpdateQueue, but because it suspends, + // it needs to happen after the `pushCacheProvider` call above to avoid a + // context stack mismatch. A bit unfortunate. - function updateClassComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - { - // This is used by DevTools to force a boundary to error. - switch (shouldError(workInProgress)) { - case false: { - var _instance = workInProgress.stateNode; - var ctor = workInProgress.type; // TODO This way of resetting the error boundary state is a hack. - // Is there a better way to do this? - - var tempInstance = new ctor( - workInProgress.memoizedProps, - _instance.context - ); - var state = tempInstance.state; - _instance.updater.enqueueSetState(_instance, state, null); + suspendIfUpdateReadFromEntangledAsyncAction(); // Caution: React DevTools currently depends on this property + // being called "element". - break; - } + var nextChildren = nextState.element; - case true: { - workInProgress.flags |= DidCapture; - workInProgress.flags |= ShouldCapture; // eslint-disable-next-line react-internal/prod-error-codes + { - var error$1 = new Error("Simulated error coming from DevTools"); - var lane = pickArbitraryLane(renderLanes); - workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); // Schedule the error boundary to re-render using updated state + if (nextChildren === prevChildren) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - var root = getWorkInProgressRoot(); + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } + return workInProgress.child; +} - var update = createClassErrorUpdate(lane); - initializeClassErrorUpdate( - update, - root, - workInProgress, - createCapturedValueAtFiber(error$1, workInProgress) - ); - enqueueCapturedUpdate(workInProgress, update); - break; - } - } - } // Push context providers early to prevent context stack mismatches. - // During mounting we don't know the child context yet as the instance doesn't exist. - // We will invalidate the child context in finishClassComponent() right after rendering. +function updateHostComponent$1(current, workInProgress, renderLanes) { - var hasContext; + pushHostContext(workInProgress); + var nextProps = workInProgress.pendingProps; + var prevProps = current !== null ? current.memoizedProps : null; + var nextChildren = nextProps.children; - if (isContextProvider(Component)) { - hasContext = true; - pushContextProvider(workInProgress); - } else { - hasContext = false; - } - - prepareToReadContext(workInProgress, renderLanes); - var instance = workInProgress.stateNode; - var shouldUpdate; - - if (instance === null) { - resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress); // In the initial pass we might need to construct the instance. - - constructClassInstance(workInProgress, Component, nextProps); - mountClassInstance(workInProgress, Component, nextProps, renderLanes); - shouldUpdate = true; - } else if (current === null) { - // In a resume, we'll already have an instance we can reuse. - shouldUpdate = resumeMountClassInstance( - workInProgress, - Component, - nextProps, - renderLanes - ); - } else { - shouldUpdate = updateClassInstance( - current, - workInProgress, - Component, - nextProps, - renderLanes - ); - } - - var nextUnitOfWork = finishClassComponent( - current, - workInProgress, - Component, - shouldUpdate, - hasContext, - renderLanes - ); + if (prevProps !== null && shouldSetTextContent()) { + // If we're switching from a direct text child to a normal child, or to + // empty, we need to schedule the text content to be reset. + workInProgress.flags |= ContentReset; + } + + { + var memoizedState = workInProgress.memoizedState; + + if (memoizedState !== null) { + // This fiber has been upgraded to a stateful component. The only way + // happens currently is for form actions. We use hooks to track the + // pending and error state of the form. + // + // Once a fiber is upgraded to be stateful, it remains stateful for the + // rest of its lifetime. + var newState = renderTransitionAwareHostComponentWithHooks(current, workInProgress, renderLanes); // If the transition state changed, propagate the change to all the + // descendents. We use Context as an implementation detail for this. + // + // This is intentionally set here instead of pushHostContext because + // pushHostContext gets called before we process the state hook, to avoid + // a state mismatch in the event that something suspends. + // + // NOTE: This assumes that there cannot be nested transition providers, + // because the only renderer that implements this feature is React DOM, + // and forms cannot be nested. If we did support nested providers, then + // we would need to push a context value even for host fibers that + // haven't been upgraded yet. { - var inst = workInProgress.stateNode; - - if (shouldUpdate && inst.props !== nextProps) { - if (!didWarnAboutReassigningProps) { - error( - "It looks like %s is reassigning its own `this.props` while rendering. " + - "This is not supported and can lead to confusing bugs.", - getComponentNameFromFiber(workInProgress) || "a component" - ); - } + HostTransitionContext._currentValue2 = newState; + } + + { + if (didReceiveUpdate) { + if (current !== null) { + var oldStateHook = current.memoizedState; + var oldState = oldStateHook.memoizedState; // This uses regular equality instead of Object.is because we assume + // that host transition state doesn't include NaN as a valid type. - didWarnAboutReassigningProps = true; + if (oldState !== newState) { + propagateContextChange(workInProgress, HostTransitionContext, renderLanes); + } + } } } - - return nextUnitOfWork; } + } - function finishClassComponent( - current, - workInProgress, - Component, - shouldUpdate, - hasContext, - renderLanes - ) { - // Refs should update even if shouldComponentUpdate returns false - markRef(current, workInProgress); - var didCaptureError = (workInProgress.flags & DidCapture) !== NoFlags$1; + markRef(current, workInProgress); + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (!shouldUpdate && !didCaptureError) { - // Context providers should defer to sCU for rendering - if (hasContext) { - invalidateContextProvider(workInProgress, Component, false); - } +function updateHostText$1(current, workInProgress) { + // immediately after. - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } - var instance = workInProgress.stateNode; // Rerender + return null; +} + +function mountLazyComponent(_current, workInProgress, elementType, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); + var props = workInProgress.pendingProps; + var lazyComponent = elementType; + var payload = lazyComponent._payload; + var init = lazyComponent._init; + var Component = init(payload); // Store the unwrapped component in the type. + + workInProgress.type = Component; + + if (typeof Component === 'function') { + if (isFunctionClassComponent(Component)) { + var resolvedProps = resolveClassComponentProps(Component, props, false); + workInProgress.tag = ClassComponent; { - ReactSharedInternals.owner = workInProgress; + workInProgress.type = Component = resolveClassForHotReloading(Component); } - var nextChildren; + return updateClassComponent(null, workInProgress, Component, resolvedProps, renderLanes); + } else { + var _resolvedProps = resolveDefaultPropsOnNonClassComponent(Component, props); - if ( - didCaptureError && - typeof Component.getDerivedStateFromError !== "function" - ) { - // If we captured an error, but getDerivedStateFromError is not defined, - // unmount all the children. componentDidCatch will schedule an update to - // re-render a fallback. This is temporary until we migrate everyone to - // the new API. - // TODO: Warn in a future release. - nextChildren = null; - - { - stopProfilerTimerIfRunning(); - } - } else { - { - markComponentRenderStarted(workInProgress); - } + workInProgress.tag = FunctionComponent; - { - setIsRendering(true); - nextChildren = instance.render(); + { + validateFunctionComponentInDev(workInProgress, Component); + workInProgress.type = Component = resolveFunctionForHotReloading(Component); + } - setIsRendering(false); - } + return updateFunctionComponent(null, workInProgress, Component, _resolvedProps, renderLanes); + } + } else if (Component !== undefined && Component !== null) { + var $$typeof = Component.$$typeof; - { - markComponentRenderStopped(); - } - } // React DevTools reads this flag. - - workInProgress.flags |= PerformedWork; - - if (current !== null && didCaptureError) { - // If we're recovering from an error, reconcile without reusing any of - // the existing children. Conceptually, the normal children and the children - // that are shown on error are two different sets, so we shouldn't reuse - // normal children even if their identities match. - forceUnmountCurrentAndReconcile( - current, - workInProgress, - nextChildren, - renderLanes - ); - } else { - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - } // Memoize state using the values we just used to render. - // TODO: Restructure so we never read values from the instance. + if ($$typeof === REACT_FORWARD_REF_TYPE) { + var _resolvedProps2 = resolveDefaultPropsOnNonClassComponent(Component, props); - workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it. + workInProgress.tag = ForwardRef; - if (hasContext) { - invalidateContextProvider(workInProgress, Component, true); + { + workInProgress.type = Component = resolveForwardRefForHotReloading(Component); } - return workInProgress.child; - } + return updateForwardRef(null, workInProgress, Component, _resolvedProps2, renderLanes); + } else if ($$typeof === REACT_MEMO_TYPE) { + var _resolvedProps3 = resolveDefaultPropsOnNonClassComponent(Component, props); - function pushHostRootContext(workInProgress) { - var root = workInProgress.stateNode; + workInProgress.tag = MemoComponent; + return updateMemoComponent(null, workInProgress, Component, resolveDefaultPropsOnNonClassComponent(Component.type, _resolvedProps3), // The inner type can have defaults too + renderLanes); + } + } - if (root.pendingContext) { - pushTopLevelContextObject( - workInProgress, - root.pendingContext, - root.pendingContext !== root.context - ); - } else if (root.context) { - // Should always be set - pushTopLevelContextObject(workInProgress, root.context, false); - } + var hint = ''; - pushHostContainer(workInProgress, root.containerInfo); + { + if (Component !== null && typeof Component === 'object' && Component.$$typeof === REACT_LAZY_TYPE) { + hint = ' Did you wrap a component in React.lazy() more than once?'; } + } // This message intentionally doesn't mention ForwardRef or MemoComponent + // because the fact that it's a separate type of work is an + // implementation detail. - function updateHostRoot(current, workInProgress, renderLanes) { - pushHostRootContext(workInProgress); - if (current === null) { - throw new Error("Should have a current fiber. This is a bug in React."); - } + throw new Error("Element type is invalid. Received a promise that resolves to: " + Component + ". " + ("Lazy element type must resolve to a class or function." + hint)); +} - var nextProps = workInProgress.pendingProps; - var prevState = workInProgress.memoizedState; - var prevChildren = prevState.element; - cloneUpdateQueue(current, workInProgress); - processUpdateQueue(workInProgress, nextProps, null, renderLanes); - var nextState = workInProgress.memoizedState; +function mountIncompleteClassComponent(_current, workInProgress, Component, nextProps, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); // Promote the fiber to a class and try rendering again. - { - var nextCache = nextState.cache; - pushCacheProvider(workInProgress, nextCache); + workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent` + // Push context providers early to prevent context stack mismatches. + // During mounting we don't know the child context yet as the instance doesn't exist. + // We will invalidate the child context in finishClassComponent() right after rendering. - if (nextCache !== prevState.cache) { - // The root cache refreshed. - propagateContextChange(workInProgress, CacheContext, renderLanes); - } - } // This would ideally go inside processUpdateQueue, but because it suspends, - // it needs to happen after the `pushCacheProvider` call above to avoid a - // context stack mismatch. A bit unfortunate. + var hasContext; + + if (isContextProvider(Component)) { + hasContext = true; + pushContextProvider(workInProgress); + } else { + hasContext = false; + } + + prepareToReadContext(workInProgress, renderLanes); + constructClassInstance(workInProgress, Component, nextProps); + mountClassInstance(workInProgress, Component, nextProps, renderLanes); + return finishClassComponent(null, workInProgress, Component, true, hasContext, renderLanes); +} + +function validateFunctionComponentInDev(workInProgress, Component) { + { + if (Component) { + if (Component.childContextTypes) { + error('childContextTypes cannot be defined on a function component.\n' + ' %s.childContextTypes = ...', Component.displayName || Component.name || 'Component'); + } + } + + if (workInProgress.ref !== null) { + var info = ''; + var componentName = getComponentNameFromType(Component) || 'Unknown'; + var ownerName = getCurrentFiberOwnerNameInDevOrNull(); - suspendIfUpdateReadFromEntangledAsyncAction(); // Caution: React DevTools currently depends on this property - // being called "element". + if (ownerName) { + info += '\n\nCheck the render method of `' + ownerName + '`.'; + } - var nextChildren = nextState.element; + var warningKey = componentName + '|' + (ownerName || ''); - { - if (nextChildren === prevChildren) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } + if (!didWarnAboutFunctionRefs[warningKey]) { + didWarnAboutFunctionRefs[warningKey] = true; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); + error('Function components cannot be given refs. ' + 'Attempts to access this ref will fail. ' + 'Did you mean to use React.forwardRef()?%s', info); } - - return workInProgress.child; } - function updateHostComponent$1(current, workInProgress, renderLanes) { - pushHostContext(workInProgress); - var nextProps = workInProgress.pendingProps; - var prevProps = current !== null ? current.memoizedProps : null; - var nextChildren = nextProps.children; + if (Component.defaultProps !== undefined) { + var _componentName = getComponentNameFromType(Component) || 'Unknown'; - if (prevProps !== null && shouldSetTextContent()) { - // If we're switching from a direct text child to a normal child, or to - // empty, we need to schedule the text content to be reset. - workInProgress.flags |= ContentReset; - } + if (!didWarnAboutDefaultPropsOnFunctionComponent[_componentName]) { + error('%s: Support for defaultProps will be removed from function components ' + 'in a future major release. Use JavaScript default parameters instead.', _componentName); - { - var memoizedState = workInProgress.memoizedState; + didWarnAboutDefaultPropsOnFunctionComponent[_componentName] = true; + } + } - if (memoizedState !== null) { - // This fiber has been upgraded to a stateful component. The only way - // happens currently is for form actions. We use hooks to track the - // pending and error state of the form. - // - // Once a fiber is upgraded to be stateful, it remains stateful for the - // rest of its lifetime. - var newState = renderTransitionAwareHostComponentWithHooks( - current, - workInProgress, - renderLanes - ); // If the transition state changed, propagate the change to all the - // descendents. We use Context as an implementation detail for this. - // - // This is intentionally set here instead of pushHostContext because - // pushHostContext gets called before we process the state hook, to avoid - // a state mismatch in the event that something suspends. - // - // NOTE: This assumes that there cannot be nested transition providers, - // because the only renderer that implements this feature is React DOM, - // and forms cannot be nested. If we did support nested providers, then - // we would need to push a context value even for host fibers that - // haven't been upgraded yet. + if (typeof Component.getDerivedStateFromProps === 'function') { + var _componentName2 = getComponentNameFromType(Component) || 'Unknown'; - { - HostTransitionContext._currentValue2 = newState; - } + if (!didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2]) { + error('%s: Function components do not support getDerivedStateFromProps.', _componentName2); - { - if (didReceiveUpdate) { - if (current !== null) { - var oldStateHook = current.memoizedState; - var oldState = oldStateHook.memoizedState; // This uses regular equality instead of Object.is because we assume - // that host transition state doesn't include NaN as a valid type. - - if (oldState !== newState) { - propagateContextChange( - workInProgress, - HostTransitionContext, - renderLanes - ); - } - } - } - } - } + didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = true; } - - markRef(current, workInProgress); - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; } - function updateHostText$1(current, workInProgress) { - // immediately after. + if (typeof Component.contextType === 'object' && Component.contextType !== null) { + var _componentName3 = getComponentNameFromType(Component) || 'Unknown'; - return null; + if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) { + error('%s: Function components do not support contextType.', _componentName3); + + didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true; + } } + } +} - function mountLazyComponent( - _current, - workInProgress, - elementType, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); - var props = workInProgress.pendingProps; - var lazyComponent = elementType; - var payload = lazyComponent._payload; - var init = lazyComponent._init; - var Component = init(payload); // Store the unwrapped component in the type. - - workInProgress.type = Component; - - if (typeof Component === "function") { - if (isFunctionClassComponent(Component)) { - var resolvedProps = resolveClassComponentProps( - Component, - props, - false - ); - workInProgress.tag = ClassComponent; +var SUSPENDED_MARKER = { + dehydrated: null, + treeContext: null, + retryLane: NoLane +}; + +function mountSuspenseOffscreenState(renderLanes) { + return { + baseLanes: renderLanes, + cachePool: getSuspendedCache() + }; +} - { - workInProgress.type = Component = - resolveClassForHotReloading(Component); - } +function updateSuspenseOffscreenState(prevOffscreenState, renderLanes) { + var cachePool = null; - return updateClassComponent( - null, - workInProgress, - Component, - resolvedProps, - renderLanes - ); - } else { - var _resolvedProps = resolveDefaultPropsOnNonClassComponent( - Component, - props - ); + { + var prevCachePool = prevOffscreenState.cachePool; - workInProgress.tag = FunctionComponent; + if (prevCachePool !== null) { + var parentCache = CacheContext._currentValue2; - { - validateFunctionComponentInDev(workInProgress, Component); - workInProgress.type = Component = - resolveFunctionForHotReloading(Component); - } + if (prevCachePool.parent !== parentCache) { + // Detected a refresh in the parent. This overrides any previously + // suspended cache. + cachePool = { + parent: parentCache, + pool: parentCache + }; + } else { + // We can reuse the cache from last time. The only thing that would have + // overridden it is a parent refresh, which we checked for above. + cachePool = prevCachePool; + } + } else { + // If there's no previous cache pool, grab the current one. + cachePool = getSuspendedCache(); + } + } + + return { + baseLanes: mergeLanes(prevOffscreenState.baseLanes, renderLanes), + cachePool: cachePool + }; +} // TODO: Probably should inline this back + + +function shouldRemainOnFallback(current, workInProgress, renderLanes) { + // If we're already showing a fallback, there are cases where we need to + // remain on that fallback regardless of whether the content has resolved. + // For example, SuspenseList coordinates when nested content appears. + // TODO: For compatibility with offscreen prerendering, this should also check + // whether the current fiber (if it exists) was visible in the previous tree. + if (current !== null) { + var suspenseState = current.memoizedState; + + if (suspenseState === null) { + // Currently showing content. Don't hide it, even if ForceSuspenseFallback + // is true. More precise name might be "ForceRemainSuspenseFallback". + // Note: This is a factoring smell. Can't remain on a fallback if there's + // no fallback to remain on. + return false; + } + } // Not currently showing content. Consult the Suspense context. - return updateFunctionComponent( - null, - workInProgress, - Component, - _resolvedProps, - renderLanes - ); - } - } else if (Component !== undefined && Component !== null) { - var $$typeof = Component.$$typeof; - if ($$typeof === REACT_FORWARD_REF_TYPE) { - var _resolvedProps2 = resolveDefaultPropsOnNonClassComponent( - Component, - props - ); + var suspenseContext = suspenseStackCursor.current; + return hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); +} - workInProgress.tag = ForwardRef; +function getRemainingWorkInPrimaryTree(current, primaryTreeDidDefer, renderLanes) { + var remainingLanes = current !== null ? removeLanes(current.childLanes, renderLanes) : NoLanes; - { - workInProgress.type = Component = - resolveForwardRefForHotReloading(Component); - } + if (primaryTreeDidDefer) { + // A useDeferredValue hook spawned a deferred task inside the primary tree. + // Ensure that we retry this component at the deferred priority. + // TODO: We could make this a per-subtree value instead of a global one. + // Would need to track it on the context stack somehow, similar to what + // we'd have to do for resumable contexts. + remainingLanes = mergeLanes(remainingLanes, peekDeferredLane()); + } - return updateForwardRef( - null, - workInProgress, - Component, - _resolvedProps2, - renderLanes - ); - } else if ($$typeof === REACT_MEMO_TYPE) { - var _resolvedProps3 = resolveDefaultPropsOnNonClassComponent( - Component, - props - ); - - workInProgress.tag = MemoComponent; - return updateMemoComponent( - null, - workInProgress, - Component, - resolveDefaultPropsOnNonClassComponent( - Component.type, - _resolvedProps3 - ), // The inner type can have defaults too - renderLanes - ); - } - } + return remainingLanes; +} - var hint = ""; +function updateSuspenseComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend. + + { + if (shouldSuspend(workInProgress)) { + workInProgress.flags |= DidCapture; + } + } + + var showFallback = false; + var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; + + if (didSuspend || shouldRemainOnFallback(current)) { + // Something in this boundary's subtree already suspended. Switch to + // rendering the fallback children. + showFallback = true; + workInProgress.flags &= ~DidCapture; + } // Check if the primary children spawned a deferred task (useDeferredValue) + // during the first pass. + + + var didPrimaryChildrenDefer = (workInProgress.flags & DidDefer) !== NoFlags$1; + workInProgress.flags &= ~DidDefer; // OK, the next part is confusing. We're about to reconcile the Suspense + // boundary's children. This involves some custom reconciliation logic. Two + // main reasons this is so complicated. + // + // First, Legacy Mode has different semantics for backwards compatibility. The + // primary tree will commit in an inconsistent state, so when we do the + // second pass to render the fallback, we do some exceedingly, uh, clever + // hacks to make that not totally break. Like transferring effects and + // deletions from hidden tree. In Concurrent Mode, it's much simpler, + // because we bailout on the primary tree completely and leave it in its old + // state, no effects. Same as what we do for Offscreen (except that + // Offscreen doesn't have the first render pass). + // + // Second is hydration. During hydration, the Suspense fiber has a slightly + // different layout, where the child points to a dehydrated fragment, which + // contains the DOM rendered by the server. + // + // Third, even if you set all that aside, Suspense is like error boundaries in + // that we first we try to render one tree, and if that fails, we render again + // and switch to a different tree. Like a try/catch block. So we have to track + // which branch we're currently rendering. Ideally we would model this using + // a stack. + + if (current === null) { + + var nextPrimaryChildren = nextProps.children; + var nextFallbackChildren = nextProps.fallback; + + if (showFallback) { + pushFallbackTreeSuspenseHandler(workInProgress); + var fallbackFragment = mountSuspenseFallbackChildren(workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + var primaryChildFragment = workInProgress.child; + primaryChildFragment.memoizedState = mountSuspenseOffscreenState(renderLanes); + primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + + return fallbackFragment; + } else if (typeof nextProps.unstable_expectedLoadTime === 'number') { + // This is a CPU-bound tree. Skip this tree and show a placeholder to + // unblock the surrounding content. Then immediately retry after the + // initial commit. + pushFallbackTreeSuspenseHandler(workInProgress); + + var _fallbackFragment = mountSuspenseFallbackChildren(workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + + var _primaryChildFragment = workInProgress.child; + _primaryChildFragment.memoizedState = mountSuspenseOffscreenState(renderLanes); + _primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; // TODO: Transition Tracing is not yet implemented for CPU Suspense. + // Since nothing actually suspended, there will nothing to ping this to + // get it started back up to attempt the next item. While in terms of + // priority this work has the same priority as this current render, it's + // not part of the same transition once the transition has committed. If + // it's sync, we still want to yield so that it can be painted. + // Conceptually, this is really the same as pinging. We can use any + // RetryLane even if it's the one currently rendering since we're leaving + // it behind on this node. + + workInProgress.lanes = SomeRetryLane; + return _fallbackFragment; + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); + return mountSuspensePrimaryChildren(workInProgress, nextPrimaryChildren); + } + } else { + // This is an update. + // Special path for hydration + var prevState = current.memoizedState; + + if (prevState !== null) { + var _dehydrated = prevState.dehydrated; + + if (_dehydrated !== null) { + return updateDehydratedSuspenseComponent(current, workInProgress, didSuspend, didPrimaryChildrenDefer, nextProps, _dehydrated, prevState, renderLanes); + } + } + + if (showFallback) { + pushFallbackTreeSuspenseHandler(workInProgress); + var _nextFallbackChildren = nextProps.fallback; + var _nextPrimaryChildren = nextProps.children; + var fallbackChildFragment = updateSuspenseFallbackChildren(current, workInProgress, _nextPrimaryChildren, _nextFallbackChildren, renderLanes); + var _primaryChildFragment2 = workInProgress.child; + var prevOffscreenState = current.child.memoizedState; + _primaryChildFragment2.memoizedState = prevOffscreenState === null ? mountSuspenseOffscreenState(renderLanes) : updateSuspenseOffscreenState(prevOffscreenState, renderLanes); + + _primaryChildFragment2.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + return fallbackChildFragment; + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); + var _nextPrimaryChildren2 = nextProps.children; - { - if ( - Component !== null && - typeof Component === "object" && - Component.$$typeof === REACT_LAZY_TYPE - ) { - hint = " Did you wrap a component in React.lazy() more than once?"; - } - } // This message intentionally doesn't mention ForwardRef or MemoComponent - // because the fact that it's a separate type of work is an - // implementation detail. - - throw new Error( - "Element type is invalid. Received a promise that resolves to: " + - Component + - ". " + - ("Lazy element type must resolve to a class or function." + hint) - ); - } - - function mountIncompleteClassComponent( - _current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); // Promote the fiber to a class and try rendering again. - - workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent` - // Push context providers early to prevent context stack mismatches. - // During mounting we don't know the child context yet as the instance doesn't exist. - // We will invalidate the child context in finishClassComponent() right after rendering. - - var hasContext; - - if (isContextProvider(Component)) { - hasContext = true; - pushContextProvider(workInProgress); - } else { - hasContext = false; - } + var _primaryChildFragment3 = updateSuspensePrimaryChildren(current, workInProgress, _nextPrimaryChildren2, renderLanes); - prepareToReadContext(workInProgress, renderLanes); - constructClassInstance(workInProgress, Component, nextProps); - mountClassInstance(workInProgress, Component, nextProps, renderLanes); - return finishClassComponent( - null, - workInProgress, - Component, - true, - hasContext, - renderLanes - ); + workInProgress.memoizedState = null; + return _primaryChildFragment3; } + } +} - function validateFunctionComponentInDev(workInProgress, Component) { - { - if (Component) { - if (Component.childContextTypes) { - error( - "childContextTypes cannot be defined on a function component.\n" + - " %s.childContextTypes = ...", - Component.displayName || Component.name || "Component" - ); - } - } +function mountSuspensePrimaryChildren(workInProgress, primaryChildren, renderLanes) { + var mode = workInProgress.mode; + var primaryChildProps = { + mode: 'visible', + children: primaryChildren + }; + var primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, mode); + primaryChildFragment.return = workInProgress; + workInProgress.child = primaryChildFragment; + return primaryChildFragment; +} - if (workInProgress.ref !== null) { - var info = ""; - var componentName = getComponentNameFromType(Component) || "Unknown"; - var ownerName = getCurrentFiberOwnerNameInDevOrNull(); +function mountSuspenseFallbackChildren(workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var mode = workInProgress.mode; + var progressedPrimaryFragment = workInProgress.child; + var primaryChildProps = { + mode: 'hidden', + children: primaryChildren + }; + var primaryChildFragment; + var fallbackChildFragment; + + if ((mode & ConcurrentMode) === NoMode && progressedPrimaryFragment !== null) { + // In legacy mode, we commit the primary tree as if it successfully + // completed, even though it's in an inconsistent state. + primaryChildFragment = progressedPrimaryFragment; + primaryChildFragment.childLanes = NoLanes; + primaryChildFragment.pendingProps = primaryChildProps; + + if (workInProgress.mode & ProfileMode) { + // Reset the durations from the first pass so they aren't included in the + // final amounts. This seems counterintuitive, since we're intentionally + // not measuring part of the render phase, but this makes it match what we + // do in Concurrent Mode. + primaryChildFragment.actualDuration = 0; + primaryChildFragment.actualStartTime = -1; + primaryChildFragment.selfBaseDuration = 0; + primaryChildFragment.treeBaseDuration = 0; + } + + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); + } else { + primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, mode); + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); + } + + primaryChildFragment.return = workInProgress; + fallbackChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + return fallbackChildFragment; +} - if (ownerName) { - info += "\n\nCheck the render method of `" + ownerName + "`."; - } +function mountWorkInProgressOffscreenFiber(offscreenProps, mode, renderLanes) { + // The props argument to `createFiberFromOffscreen` is `any` typed, so we use + // this wrapper function to constrain it. + return createFiberFromOffscreen(offscreenProps, mode, NoLanes, null); +} - var warningKey = componentName + "|" + (ownerName || ""); +function updateWorkInProgressOffscreenFiber(current, offscreenProps) { + // The props argument to `createWorkInProgress` is `any` typed, so we use this + // wrapper function to constrain it. + return createWorkInProgress(current, offscreenProps); +} - if (!didWarnAboutFunctionRefs[warningKey]) { - didWarnAboutFunctionRefs[warningKey] = true; +function updateSuspensePrimaryChildren(current, workInProgress, primaryChildren, renderLanes) { + var currentPrimaryChildFragment = current.child; + var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; + var primaryChildFragment = updateWorkInProgressOffscreenFiber(currentPrimaryChildFragment, { + mode: 'visible', + children: primaryChildren + }); - error( - "Function components cannot be given refs. " + - "Attempts to access this ref will fail. " + - "Did you mean to use React.forwardRef()?%s", - info - ); - } - } + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + primaryChildFragment.lanes = renderLanes; + } - if (Component.defaultProps !== undefined) { - var _componentName = getComponentNameFromType(Component) || "Unknown"; + primaryChildFragment.return = workInProgress; + primaryChildFragment.sibling = null; - if (!didWarnAboutDefaultPropsOnFunctionComponent[_componentName]) { - error( - "%s: Support for defaultProps will be removed from function components " + - "in a future major release. Use JavaScript default parameters instead.", - _componentName - ); + if (currentFallbackChildFragment !== null) { + // Delete the fallback child fragment + var deletions = workInProgress.deletions; - didWarnAboutDefaultPropsOnFunctionComponent[_componentName] = true; - } - } + if (deletions === null) { + workInProgress.deletions = [currentFallbackChildFragment]; + workInProgress.flags |= ChildDeletion; + } else { + deletions.push(currentFallbackChildFragment); + } + } - if (typeof Component.getDerivedStateFromProps === "function") { - var _componentName2 = - getComponentNameFromType(Component) || "Unknown"; + workInProgress.child = primaryChildFragment; + return primaryChildFragment; +} - if ( - !didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] - ) { - error( - "%s: Function components do not support getDerivedStateFromProps.", - _componentName2 - ); +function updateSuspenseFallbackChildren(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var mode = workInProgress.mode; + var currentPrimaryChildFragment = current.child; + var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; + var primaryChildProps = { + mode: 'hidden', + children: primaryChildren + }; + var primaryChildFragment; + + if ( // In legacy mode, we commit the primary tree as if it successfully + // completed, even though it's in an inconsistent state. + (mode & ConcurrentMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was + // already cloned. In legacy mode, the only case where this isn't true is + // when DevTools forces us to display a fallback; we skip the first render + // pass entirely and go straight to rendering the fallback. (In Concurrent + // Mode, SuspenseList can also trigger this scenario, but this is a legacy- + // only codepath.) + workInProgress.child !== currentPrimaryChildFragment) { + var progressedPrimaryFragment = workInProgress.child; + primaryChildFragment = progressedPrimaryFragment; + primaryChildFragment.childLanes = NoLanes; + primaryChildFragment.pendingProps = primaryChildProps; + + if (workInProgress.mode & ProfileMode) { + // Reset the durations from the first pass so they aren't included in the + // final amounts. This seems counterintuitive, since we're intentionally + // not measuring part of the render phase, but this makes it match what we + // do in Concurrent Mode. + primaryChildFragment.actualDuration = 0; + primaryChildFragment.actualStartTime = -1; + primaryChildFragment.selfBaseDuration = currentPrimaryChildFragment.selfBaseDuration; + primaryChildFragment.treeBaseDuration = currentPrimaryChildFragment.treeBaseDuration; + } // The fallback fiber was added as a deletion during the first pass. + // However, since we're going to remain on the fallback, we no longer want + // to delete it. + + + workInProgress.deletions = null; + } else { + primaryChildFragment = updateWorkInProgressOffscreenFiber(currentPrimaryChildFragment, primaryChildProps); // Since we're reusing a current tree, we need to reuse the flags, too. + // (We don't do this in legacy mode, because in legacy mode we don't re-use + // the current tree; see previous branch.) + + primaryChildFragment.subtreeFlags = currentPrimaryChildFragment.subtreeFlags & StaticMask; + } + + var fallbackChildFragment; + + if (currentFallbackChildFragment !== null) { + fallbackChildFragment = createWorkInProgress(currentFallbackChildFragment, fallbackChildren); + } else { + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); // Needs a placement effect because the parent (the Suspense boundary) already + // mounted but this is a new fiber. + + fallbackChildFragment.flags |= Placement; + } + + fallbackChildFragment.return = workInProgress; + primaryChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + return fallbackChildFragment; +} - didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = - true; - } - } +function retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes) { + // Falling back to client rendering. Because this has performance + // implications, it's considered a recoverable error, even though the user + // likely won't observe anything wrong with the UI. + // This will add the old fiber to the deletion list + reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated. + + var nextProps = workInProgress.pendingProps; + var primaryChildren = nextProps.children; + var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren); // Needs a placement effect because the parent (the Suspense boundary) already + // mounted but this is a new fiber. + + primaryChildFragment.flags |= Placement; + workInProgress.memoizedState = null; + return primaryChildFragment; +} - if ( - typeof Component.contextType === "object" && - Component.contextType !== null - ) { - var _componentName3 = - getComponentNameFromType(Component) || "Unknown"; - - if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) { - error( - "%s: Function components do not support contextType.", - _componentName3 - ); +function mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var fiberMode = workInProgress.mode; + var primaryChildProps = { + mode: 'visible', + children: primaryChildren + }; + var primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, fiberMode); + var fallbackChildFragment = createFiberFromFragment(fallbackChildren, fiberMode, renderLanes, null); // Needs a placement effect because the parent (the Suspense + // boundary) already mounted but this is a new fiber. + + fallbackChildFragment.flags |= Placement; + primaryChildFragment.return = workInProgress; + fallbackChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + + if ((workInProgress.mode & ConcurrentMode) !== NoMode) { + // We will have dropped the effect list which contains the + // deletion. We need to reconcile to delete the current child. + reconcileChildFibers(workInProgress, current.child, null, renderLanes); + } + + return fallbackChildFragment; +} - didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true; - } - } - } - } +function updateDehydratedSuspenseComponent(current, workInProgress, didSuspend, didPrimaryChildrenDefer, nextProps, suspenseInstance, suspenseState, renderLanes) { + if (!didSuspend) { + // This is the first render pass. Attempt to hydrate. + pushPrimaryTreeSuspenseHandler(workInProgress); // We should never be hydrating at this point because it is the first pass, - var SUSPENDED_MARKER = { - dehydrated: null, - treeContext: null, - retryLane: NoLane - }; + if (isSuspenseInstanceFallback()) { + // This boundary is in a permanent fallback state. In this case, we'll never + // get an update and we'll never be able to hydrate the final content. Let's just try the + // client side render instead. + var digest; + var message; + var stack = null; + var componentStack = null; - function mountSuspenseOffscreenState(renderLanes) { - return { - baseLanes: renderLanes, - cachePool: getSuspendedCache() - }; - } + { + var _getSuspenseInstanceF = getSuspenseInstanceFallbackErrorDetails(); - function updateSuspenseOffscreenState(prevOffscreenState, renderLanes) { - var cachePool = null; + digest = _getSuspenseInstanceF.digest; + message = _getSuspenseInstanceF.message; + stack = _getSuspenseInstanceF.stack; + componentStack = _getSuspenseInstanceF.componentStack; + } // TODO: Figure out a better signal than encoding a magic digest value. - { - var prevCachePool = prevOffscreenState.cachePool; - if (prevCachePool !== null) { - var parentCache = CacheContext._currentValue2; + { + var error; - if (prevCachePool.parent !== parentCache) { - // Detected a refresh in the parent. This overrides any previously - // suspended cache. - cachePool = { - parent: parentCache, - pool: parentCache - }; - } else { - // We can reuse the cache from last time. The only thing that would have - // overridden it is a parent refresh, which we checked for above. - cachePool = prevCachePool; - } + if (message) { + // eslint-disable-next-line react-internal/prod-error-codes + error = new Error(message); } else { - // If there's no previous cache pool, grab the current one. - cachePool = getSuspendedCache(); - } - } + error = new Error('The server could not finish this Suspense boundary, likely ' + 'due to an error during server rendering. ' + 'Switched to client rendering.'); + } // Replace the stack with the server stack - return { - baseLanes: mergeLanes(prevOffscreenState.baseLanes, renderLanes), - cachePool: cachePool - }; - } // TODO: Probably should inline this back - - function shouldRemainOnFallback(current, workInProgress, renderLanes) { - // If we're already showing a fallback, there are cases where we need to - // remain on that fallback regardless of whether the content has resolved. - // For example, SuspenseList coordinates when nested content appears. - // TODO: For compatibility with offscreen prerendering, this should also check - // whether the current fiber (if it exists) was visible in the previous tree. - if (current !== null) { - var suspenseState = current.memoizedState; - if (suspenseState === null) { - // Currently showing content. Don't hide it, even if ForceSuspenseFallback - // is true. More precise name might be "ForceRemainSuspenseFallback". - // Note: This is a factoring smell. Can't remain on a fallback if there's - // no fallback to remain on. - return false; - } - } // Not currently showing content. Consult the Suspense context. + error.stack = stack || ''; + error.digest = digest; + var capturedValue = createCapturedValueFromError(error, componentStack === undefined ? null : componentStack); + queueHydrationError(capturedValue); + } - var suspenseContext = suspenseStackCursor.current; - return hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); } + // any context has changed, we need to treat is as if the input might have changed. - function getRemainingWorkInPrimaryTree( - current, - primaryTreeDidDefer, - renderLanes - ) { - var remainingLanes = - current !== null - ? removeLanes(current.childLanes, renderLanes) - : NoLanes; - if (primaryTreeDidDefer) { - // A useDeferredValue hook spawned a deferred task inside the primary tree. - // Ensure that we retry this component at the deferred priority. - // TODO: We could make this a per-subtree value instead of a global one. - // Would need to track it on the context stack somehow, similar to what - // we'd have to do for resumable contexts. - remainingLanes = mergeLanes(remainingLanes, peekDeferredLane()); - } + var hasContextChanged = includesSomeLane(renderLanes, current.childLanes); - return remainingLanes; - } + if (didReceiveUpdate || hasContextChanged) { + // This boundary has changed since the first render. This means that we are now unable to + // hydrate it. We might still be able to hydrate it using a higher priority lane. + var root = getWorkInProgressRoot(); - function updateSuspenseComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend. + if (root !== null) { + var attemptHydrationAtLane = getBumpedLaneForHydration(root, renderLanes); + + if (attemptHydrationAtLane !== NoLane && attemptHydrationAtLane !== suspenseState.retryLane) { + // Intentionally mutating since this render will get interrupted. This + // is one of the very rare times where we mutate the current tree + // during the render phase. + suspenseState.retryLane = attemptHydrationAtLane; + enqueueConcurrentRenderForLane(current, attemptHydrationAtLane); + scheduleUpdateOnFiber(root, current, attemptHydrationAtLane); // Throw a special object that signals to the work loop that it should + // interrupt the current render. + // + // Because we're inside a React-only execution stack, we don't + // strictly need to throw here — we could instead modify some internal + // work loop state. But using an exception means we don't need to + // check for this case on every iteration of the work loop. So doing + // it this way moves the check out of the fast path. - { - if (shouldSuspend(workInProgress)) { - workInProgress.flags |= DidCapture; + throw SelectiveHydrationException; } - } + } // If we did not selectively hydrate, we'll continue rendering without + // hydrating. Mark this tree as suspended to prevent it from committing + // outside a transition. + // + // This path should only happen if the hydration lane already suspended. + // Currently, it also happens during sync updates because there is no + // hydration lane for sync updates. + // TODO: We should ideally have a sync hydration lane that we can apply to do + // a pass where we hydrate this subtree in place using the previous Context and then + // reapply the update afterwards. + + + if (isSuspenseInstancePending()) ; else { + renderDidSuspendDelayIfPossible(); + } + + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); + } else if (isSuspenseInstancePending()) { + // This component is still pending more data from the server, so we can't hydrate its + // content. We treat it as if this component suspended itself. It might seem as if + // we could just try to render it client-side instead. However, this will perform a + // lot of unnecessary work and is unlikely to complete since it often will suspend + // on missing data anyway. Additionally, the server might be able to render more + // than we can on the client yet. In that case we'd end up with more fallback states + // on the client than if we just leave it alone. If the server times out or errors + // these should update this boundary to the permanent Fallback state instead. + // Mark it as having captured (i.e. suspended). + workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment. + + workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result. + + retryDehydratedSuspenseBoundary.bind(null, current); + registerSuspenseInstanceRetry(); + return null; + } else { + var primaryChildren = nextProps.children; + var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren); // Mark the children as hydrating. This is a fast path to know whether this + // tree is part of a hydrating tree. This is used to determine if a child + // node has fully mounted yet, and for scheduling event replaying. + // Conceptually this is similar to Placement in that a new subtree is + // inserted into the React tree here. It just happens to not need DOM + // mutations because it already exists. + + primaryChildFragment.flags |= Hydrating; + return primaryChildFragment; + } + } else { + // This is the second render pass. We already attempted to hydrated, but + // something either suspended or errored. + if (workInProgress.flags & ForceClientRender) { + // Something errored during hydration. Try again without hydrating. + // The error should've already been logged in throwException. + pushPrimaryTreeSuspenseHandler(workInProgress); + workInProgress.flags &= ~ForceClientRender; + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); + } else if (workInProgress.memoizedState !== null) { + // Something suspended and we should still be in dehydrated mode. + // Leave the existing child in place. + // Push to avoid a mismatch + pushFallbackTreeSuspenseHandler(workInProgress); + workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there + // but the normal suspense pass doesn't. + + workInProgress.flags |= DidCapture; + return null; + } else { + // Suspended but we should no longer be in dehydrated mode. + // Therefore we now have to render the fallback. + pushFallbackTreeSuspenseHandler(workInProgress); + var nextPrimaryChildren = nextProps.children; + var nextFallbackChildren = nextProps.fallback; + var fallbackChildFragment = mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + var _primaryChildFragment4 = workInProgress.child; + _primaryChildFragment4.memoizedState = mountSuspenseOffscreenState(renderLanes); + _primaryChildFragment4.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + return fallbackChildFragment; + } + } +} - var showFallback = false; - var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; +function scheduleSuspenseWorkOnFiber(fiber, renderLanes, propagationRoot) { + fiber.lanes = mergeLanes(fiber.lanes, renderLanes); + var alternate = fiber.alternate; - if (didSuspend || shouldRemainOnFallback(current)) { - // Something in this boundary's subtree already suspended. Switch to - // rendering the fallback children. - showFallback = true; - workInProgress.flags &= ~DidCapture; - } // Check if the primary children spawned a deferred task (useDeferredValue) - // during the first pass. + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, renderLanes); + } - var didPrimaryChildrenDefer = - (workInProgress.flags & DidDefer) !== NoFlags$1; - workInProgress.flags &= ~DidDefer; // OK, the next part is confusing. We're about to reconcile the Suspense - // boundary's children. This involves some custom reconciliation logic. Two - // main reasons this is so complicated. - // - // First, Legacy Mode has different semantics for backwards compatibility. The - // primary tree will commit in an inconsistent state, so when we do the - // second pass to render the fallback, we do some exceedingly, uh, clever - // hacks to make that not totally break. Like transferring effects and - // deletions from hidden tree. In Concurrent Mode, it's much simpler, - // because we bailout on the primary tree completely and leave it in its old - // state, no effects. Same as what we do for Offscreen (except that - // Offscreen doesn't have the first render pass). - // - // Second is hydration. During hydration, the Suspense fiber has a slightly - // different layout, where the child points to a dehydrated fragment, which - // contains the DOM rendered by the server. - // - // Third, even if you set all that aside, Suspense is like error boundaries in - // that we first we try to render one tree, and if that fails, we render again - // and switch to a different tree. Like a try/catch block. So we have to track - // which branch we're currently rendering. Ideally we would model this using - // a stack. - - if (current === null) { - var nextPrimaryChildren = nextProps.children; - var nextFallbackChildren = nextProps.fallback; - - if (showFallback) { - pushFallbackTreeSuspenseHandler(workInProgress); - var fallbackFragment = mountSuspenseFallbackChildren( - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - var primaryChildFragment = workInProgress.child; - primaryChildFragment.memoizedState = - mountSuspenseOffscreenState(renderLanes); - primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - - return fallbackFragment; - } else if (typeof nextProps.unstable_expectedLoadTime === "number") { - // This is a CPU-bound tree. Skip this tree and show a placeholder to - // unblock the surrounding content. Then immediately retry after the - // initial commit. - pushFallbackTreeSuspenseHandler(workInProgress); - - var _fallbackFragment = mountSuspenseFallbackChildren( - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - - var _primaryChildFragment = workInProgress.child; - _primaryChildFragment.memoizedState = - mountSuspenseOffscreenState(renderLanes); - _primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; // TODO: Transition Tracing is not yet implemented for CPU Suspense. - // Since nothing actually suspended, there will nothing to ping this to - // get it started back up to attempt the next item. While in terms of - // priority this work has the same priority as this current render, it's - // not part of the same transition once the transition has committed. If - // it's sync, we still want to yield so that it can be painted. - // Conceptually, this is really the same as pinging. We can use any - // RetryLane even if it's the one currently rendering since we're leaving - // it behind on this node. - - workInProgress.lanes = SomeRetryLane; - return _fallbackFragment; - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - return mountSuspensePrimaryChildren( - workInProgress, - nextPrimaryChildren - ); - } - } else { - // This is an update. - // Special path for hydration - var prevState = current.memoizedState; + scheduleContextWorkOnParentPath(fiber.return, renderLanes, propagationRoot); +} - if (prevState !== null) { - var _dehydrated = prevState.dehydrated; - - if (_dehydrated !== null) { - return updateDehydratedSuspenseComponent( - current, - workInProgress, - didSuspend, - didPrimaryChildrenDefer, - nextProps, - _dehydrated, - prevState, - renderLanes - ); - } - } +function propagateSuspenseContextChange(workInProgress, firstChild, renderLanes) { + // Mark any Suspense boundaries with fallbacks as having work to do. + // If they were previously forced into fallbacks, they may now be able + // to unblock. + var node = firstChild; + + while (node !== null) { + if (node.tag === SuspenseComponent) { + var state = node.memoizedState; + + if (state !== null) { + scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); + } + } else if (node.tag === SuspenseListComponent) { + // If the tail is hidden there might not be an Suspense boundaries + // to schedule work on. In this case we have to schedule it on the + // list itself. + // We don't have to traverse to the children of the list since + // the list will propagate the change when it rerenders. + scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } - if (showFallback) { - pushFallbackTreeSuspenseHandler(workInProgress); - var _nextFallbackChildren = nextProps.fallback; - var _nextPrimaryChildren = nextProps.children; - var fallbackChildFragment = updateSuspenseFallbackChildren( - current, - workInProgress, - _nextPrimaryChildren, - _nextFallbackChildren, - renderLanes - ); - var _primaryChildFragment2 = workInProgress.child; - var prevOffscreenState = current.child.memoizedState; - _primaryChildFragment2.memoizedState = - prevOffscreenState === null - ? mountSuspenseOffscreenState(renderLanes) - : updateSuspenseOffscreenState(prevOffscreenState, renderLanes); - - _primaryChildFragment2.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - return fallbackChildFragment; - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - var _nextPrimaryChildren2 = nextProps.children; + if (node === workInProgress) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - var _primaryChildFragment3 = updateSuspensePrimaryChildren( - current, - workInProgress, - _nextPrimaryChildren2, - renderLanes - ); - workInProgress.memoizedState = null; - return _primaryChildFragment3; - } + while (node.sibling === null) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (node.return === null || node.return === workInProgress) { + return; } - } - function mountSuspensePrimaryChildren( - workInProgress, - primaryChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var primaryChildProps = { - mode: "visible", - children: primaryChildren - }; - var primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - mode - ); - primaryChildFragment.return = workInProgress; - workInProgress.child = primaryChildFragment; - return primaryChildFragment; - } + node = node.return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function mountSuspenseFallbackChildren( - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var progressedPrimaryFragment = workInProgress.child; - var primaryChildProps = { - mode: "hidden", - children: primaryChildren - }; - var primaryChildFragment; - var fallbackChildFragment; - - if ( - (mode & ConcurrentMode) === NoMode && - progressedPrimaryFragment !== null - ) { - // In legacy mode, we commit the primary tree as if it successfully - // completed, even though it's in an inconsistent state. - primaryChildFragment = progressedPrimaryFragment; - primaryChildFragment.childLanes = NoLanes; - primaryChildFragment.pendingProps = primaryChildProps; - - if (workInProgress.mode & ProfileMode) { - // Reset the durations from the first pass so they aren't included in the - // final amounts. This seems counterintuitive, since we're intentionally - // not measuring part of the render phase, but this makes it match what we - // do in Concurrent Mode. - primaryChildFragment.actualDuration = 0; - primaryChildFragment.actualStartTime = -1; - primaryChildFragment.selfBaseDuration = 0; - primaryChildFragment.treeBaseDuration = 0; - } - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); - } else { - primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - mode - ); - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); - } - - primaryChildFragment.return = workInProgress; - fallbackChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - return fallbackChildFragment; + node.sibling.return = node.return; + node = node.sibling; + } +} + +function findLastContentRow(firstChild) { + // This is going to find the last row among these children that is already + // showing content on the screen, as opposed to being in fallback state or + // new. If a row has multiple Suspense boundaries, any of them being in the + // fallback state, counts as the whole row being in a fallback state. + // Note that the "rows" will be workInProgress, but any nested children + // will still be current since we haven't rendered them yet. The mounted + // order may not be the same as the new order. We use the new order. + var row = firstChild; + var lastContentRow = null; + + while (row !== null) { + var currentRow = row.alternate; // New rows can't be content rows. + + if (currentRow !== null && findFirstSuspended(currentRow) === null) { + lastContentRow = row; } - function mountWorkInProgressOffscreenFiber( - offscreenProps, - mode, - renderLanes - ) { - // The props argument to `createFiberFromOffscreen` is `any` typed, so we use - // this wrapper function to constrain it. - return createFiberFromOffscreen(offscreenProps, mode, NoLanes, null); - } - - function updateWorkInProgressOffscreenFiber(current, offscreenProps) { - // The props argument to `createWorkInProgress` is `any` typed, so we use this - // wrapper function to constrain it. - return createWorkInProgress(current, offscreenProps); - } - - function updateSuspensePrimaryChildren( - current, - workInProgress, - primaryChildren, - renderLanes - ) { - var currentPrimaryChildFragment = current.child; - var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; - var primaryChildFragment = updateWorkInProgressOffscreenFiber( - currentPrimaryChildFragment, - { - mode: "visible", - children: primaryChildren - } - ); + row = row.sibling; + } - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - primaryChildFragment.lanes = renderLanes; - } + return lastContentRow; +} - primaryChildFragment.return = workInProgress; - primaryChildFragment.sibling = null; +function validateRevealOrder(revealOrder) { + { + if (revealOrder !== undefined && revealOrder !== 'forwards' && revealOrder !== 'backwards' && revealOrder !== 'together' && !didWarnAboutRevealOrder[revealOrder]) { + didWarnAboutRevealOrder[revealOrder] = true; - if (currentFallbackChildFragment !== null) { - // Delete the fallback child fragment - var deletions = workInProgress.deletions; + if (typeof revealOrder === 'string') { + switch (revealOrder.toLowerCase()) { + case 'together': + case 'forwards': + case 'backwards': + { + error('"%s" is not a valid value for revealOrder on . ' + 'Use lowercase "%s" instead.', revealOrder, revealOrder.toLowerCase()); - if (deletions === null) { - workInProgress.deletions = [currentFallbackChildFragment]; - workInProgress.flags |= ChildDeletion; - } else { - deletions.push(currentFallbackChildFragment); - } - } + break; + } - workInProgress.child = primaryChildFragment; - return primaryChildFragment; - } + case 'forward': + case 'backward': + { + error('"%s" is not a valid value for revealOrder on . ' + 'React uses the -s suffix in the spelling. Use "%ss" instead.', revealOrder, revealOrder.toLowerCase()); - function updateSuspenseFallbackChildren( - current, - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var currentPrimaryChildFragment = current.child; - var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; - var primaryChildProps = { - mode: "hidden", - children: primaryChildren - }; - var primaryChildFragment; - - if ( - // In legacy mode, we commit the primary tree as if it successfully - // completed, even though it's in an inconsistent state. - (mode & ConcurrentMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was - // already cloned. In legacy mode, the only case where this isn't true is - // when DevTools forces us to display a fallback; we skip the first render - // pass entirely and go straight to rendering the fallback. (In Concurrent - // Mode, SuspenseList can also trigger this scenario, but this is a legacy- - // only codepath.) - workInProgress.child !== currentPrimaryChildFragment - ) { - var progressedPrimaryFragment = workInProgress.child; - primaryChildFragment = progressedPrimaryFragment; - primaryChildFragment.childLanes = NoLanes; - primaryChildFragment.pendingProps = primaryChildProps; - - if (workInProgress.mode & ProfileMode) { - // Reset the durations from the first pass so they aren't included in the - // final amounts. This seems counterintuitive, since we're intentionally - // not measuring part of the render phase, but this makes it match what we - // do in Concurrent Mode. - primaryChildFragment.actualDuration = 0; - primaryChildFragment.actualStartTime = -1; - primaryChildFragment.selfBaseDuration = - currentPrimaryChildFragment.selfBaseDuration; - primaryChildFragment.treeBaseDuration = - currentPrimaryChildFragment.treeBaseDuration; - } // The fallback fiber was added as a deletion during the first pass. - // However, since we're going to remain on the fallback, we no longer want - // to delete it. - - workInProgress.deletions = null; - } else { - primaryChildFragment = updateWorkInProgressOffscreenFiber( - currentPrimaryChildFragment, - primaryChildProps - ); // Since we're reusing a current tree, we need to reuse the flags, too. - // (We don't do this in legacy mode, because in legacy mode we don't re-use - // the current tree; see previous branch.) + break; + } + + default: + error('"%s" is not a supported revealOrder on . ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder); - primaryChildFragment.subtreeFlags = - currentPrimaryChildFragment.subtreeFlags & StaticMask; + break; + } + } else { + error('%s is not a supported value for revealOrder on . ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder); } + } + } +} - var fallbackChildFragment; +function validateTailOptions(tailMode, revealOrder) { + { + if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) { + if (tailMode !== 'collapsed' && tailMode !== 'hidden') { + didWarnAboutTailOptions[tailMode] = true; - if (currentFallbackChildFragment !== null) { - fallbackChildFragment = createWorkInProgress( - currentFallbackChildFragment, - fallbackChildren - ); - } else { - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); // Needs a placement effect because the parent (the Suspense boundary) already - // mounted but this is a new fiber. + error('"%s" is not a supported value for tail on . ' + 'Did you mean "collapsed" or "hidden"?', tailMode); + } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') { + didWarnAboutTailOptions[tailMode] = true; - fallbackChildFragment.flags |= Placement; + error(' is only valid if revealOrder is ' + '"forwards" or "backwards". ' + 'Did you mean to specify revealOrder="forwards"?', tailMode); } - - fallbackChildFragment.return = workInProgress; - primaryChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - return fallbackChildFragment; } + } +} - function retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ) { - // Falling back to client rendering. Because this has performance - // implications, it's considered a recoverable error, even though the user - // likely won't observe anything wrong with the UI. - // This will add the old fiber to the deletion list - reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated. +function validateSuspenseListNestedChild(childSlot, index) { + { + var isAnArray = isArray(childSlot); + var isIterable = !isAnArray && typeof getIteratorFn(childSlot) === 'function'; - var nextProps = workInProgress.pendingProps; - var primaryChildren = nextProps.children; - var primaryChildFragment = mountSuspensePrimaryChildren( - workInProgress, - primaryChildren - ); // Needs a placement effect because the parent (the Suspense boundary) already - // mounted but this is a new fiber. + if (isAnArray || isIterable) { + var type = isAnArray ? 'array' : 'iterable'; - primaryChildFragment.flags |= Placement; - workInProgress.memoizedState = null; - return primaryChildFragment; + error('A nested %s was passed to row #%s in . Wrap it in ' + 'an additional SuspenseList to configure its revealOrder: ' + ' ... ' + '{%s} ... ' + '', type, index, type); + + return false; } + } - function mountSuspenseFallbackAfterRetryWithoutHydrating( - current, - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var fiberMode = workInProgress.mode; - var primaryChildProps = { - mode: "visible", - children: primaryChildren - }; - var primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - fiberMode - ); - var fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - fiberMode, - renderLanes, - null - ); // Needs a placement effect because the parent (the Suspense - // boundary) already mounted but this is a new fiber. - - fallbackChildFragment.flags |= Placement; - primaryChildFragment.return = workInProgress; - fallbackChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - - if ((workInProgress.mode & ConcurrentMode) !== NoMode) { - // We will have dropped the effect list which contains the - // deletion. We need to reconcile to delete the current child. - reconcileChildFibers(workInProgress, current.child, null, renderLanes); - } + return true; +} - return fallbackChildFragment; - } +function validateSuspenseListChildren(children, revealOrder) { + { + if ((revealOrder === 'forwards' || revealOrder === 'backwards') && children !== undefined && children !== null && children !== false) { + if (isArray(children)) { + for (var i = 0; i < children.length; i++) { + if (!validateSuspenseListNestedChild(children[i], i)) { + return; + } + } + } else { + var iteratorFn = getIteratorFn(children); - function updateDehydratedSuspenseComponent( - current, - workInProgress, - didSuspend, - didPrimaryChildrenDefer, - nextProps, - suspenseInstance, - suspenseState, - renderLanes - ) { - if (!didSuspend) { - // This is the first render pass. Attempt to hydrate. - pushPrimaryTreeSuspenseHandler(workInProgress); // We should never be hydrating at this point because it is the first pass, - - if (isSuspenseInstanceFallback()) { - // This boundary is in a permanent fallback state. In this case, we'll never - // get an update and we'll never be able to hydrate the final content. Let's just try the - // client side render instead. - var digest; - var message; - var stack = null; - var componentStack = null; + if (typeof iteratorFn === 'function') { + var childrenIterator = iteratorFn.call(children); - { - var _getSuspenseInstanceF = - getSuspenseInstanceFallbackErrorDetails(); + if (childrenIterator) { + var step = childrenIterator.next(); + var _i = 0; - digest = _getSuspenseInstanceF.digest; - message = _getSuspenseInstanceF.message; - stack = _getSuspenseInstanceF.stack; - componentStack = _getSuspenseInstanceF.componentStack; - } // TODO: Figure out a better signal than encoding a magic digest value. + for (; !step.done; step = childrenIterator.next()) { + if (!validateSuspenseListNestedChild(step.value, _i)) { + return; + } - { - var error; + _i++; + } + } + } else { + error('A single row was passed to a . ' + 'This is not useful since it needs multiple rows. ' + 'Did you mean to pass multiple children or an array?', revealOrder); + } + } + } + } +} - if (message) { - // eslint-disable-next-line react-internal/prod-error-codes - error = new Error(message); - } else { - error = new Error( - "The server could not finish this Suspense boundary, likely " + - "due to an error during server rendering. " + - "Switched to client rendering." - ); - } // Replace the stack with the server stack - - error.stack = stack || ""; - error.digest = digest; - var capturedValue = createCapturedValueFromError( - error, - componentStack === undefined ? null : componentStack - ); - queueHydrationError(capturedValue); +function initSuspenseListRenderState(workInProgress, isBackwards, tail, lastContentRow, tailMode) { + var renderState = workInProgress.memoizedState; + + if (renderState === null) { + workInProgress.memoizedState = { + isBackwards: isBackwards, + rendering: null, + renderingStartTime: 0, + last: lastContentRow, + tail: tail, + tailMode: tailMode + }; + } else { + // We can reuse the existing object from previous renders. + renderState.isBackwards = isBackwards; + renderState.rendering = null; + renderState.renderingStartTime = 0; + renderState.last = lastContentRow; + renderState.tail = tail; + renderState.tailMode = tailMode; + } +} // This can end up rendering this component multiple passes. +// The first pass splits the children fibers into two sets. A head and tail. +// We first render the head. If anything is in fallback state, we do another +// pass through beginWork to rerender all children (including the tail) with +// the force suspend context. If the first render didn't have anything in +// in fallback state. Then we render each row in the tail one-by-one. +// That happens in the completeWork phase without going back to beginWork. + + +function updateSuspenseListComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; + var revealOrder = nextProps.revealOrder; + var tailMode = nextProps.tail; + var newChildren = nextProps.children; + validateRevealOrder(revealOrder); + validateTailOptions(tailMode, revealOrder); + validateSuspenseListChildren(newChildren, revealOrder); + reconcileChildren(current, workInProgress, newChildren, renderLanes); + var suspenseContext = suspenseStackCursor.current; + var shouldForceFallback = hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); + + if (shouldForceFallback) { + suspenseContext = setShallowSuspenseListContext(suspenseContext, ForceSuspenseFallback); + workInProgress.flags |= DidCapture; + } else { + var didSuspendBefore = current !== null && (current.flags & DidCapture) !== NoFlags$1; + + if (didSuspendBefore) { + // If we previously forced a fallback, we need to schedule work + // on any nested boundaries to let them know to try to render + // again. This is the same as context updating. + propagateSuspenseContextChange(workInProgress, workInProgress.child, renderLanes); + } + + suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); + } + + pushSuspenseListContext(workInProgress, suspenseContext); + + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + // In legacy mode, SuspenseList doesn't work so we just + // use make it a noop by treating it as the default revealOrder. + workInProgress.memoizedState = null; + } else { + switch (revealOrder) { + case 'forwards': + { + var lastContentRow = findLastContentRow(workInProgress.child); + var tail; + + if (lastContentRow === null) { + // The whole list is part of the tail. + // TODO: We could fast path by just rendering the tail now. + tail = workInProgress.child; + workInProgress.child = null; + } else { + // Disconnect the tail rows after the content row. + // We're going to render them separately later. + tail = lastContentRow.sibling; + lastContentRow.sibling = null; } - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); + initSuspenseListRenderState(workInProgress, false, // isBackwards + tail, lastContentRow, tailMode); + break; } - // any context has changed, we need to treat is as if the input might have changed. - var hasContextChanged = includesSomeLane( - renderLanes, - current.childLanes - ); - - if (didReceiveUpdate || hasContextChanged) { - // This boundary has changed since the first render. This means that we are now unable to - // hydrate it. We might still be able to hydrate it using a higher priority lane. - var root = getWorkInProgressRoot(); + case 'backwards': + { + // We're going to find the first row that has existing content. + // At the same time we're going to reverse the list of everything + // we pass in the meantime. That's going to be our tail in reverse + // order. + var _tail = null; + var row = workInProgress.child; + workInProgress.child = null; + + while (row !== null) { + var currentRow = row.alternate; // New rows can't be content rows. + + if (currentRow !== null && findFirstSuspended(currentRow) === null) { + // This is the beginning of the main content. + workInProgress.child = row; + break; + } - if (root !== null) { - var attemptHydrationAtLane = getBumpedLaneForHydration( - root, - renderLanes - ); + var nextRow = row.sibling; + row.sibling = _tail; + _tail = row; + row = nextRow; + } // TODO: If workInProgress.child is null, we can continue on the tail immediately. - if ( - attemptHydrationAtLane !== NoLane && - attemptHydrationAtLane !== suspenseState.retryLane - ) { - // Intentionally mutating since this render will get interrupted. This - // is one of the very rare times where we mutate the current tree - // during the render phase. - suspenseState.retryLane = attemptHydrationAtLane; - enqueueConcurrentRenderForLane(current, attemptHydrationAtLane); - scheduleUpdateOnFiber(root, current, attemptHydrationAtLane); // Throw a special object that signals to the work loop that it should - // interrupt the current render. - // - // Because we're inside a React-only execution stack, we don't - // strictly need to throw here — we could instead modify some internal - // work loop state. But using an exception means we don't need to - // check for this case on every iteration of the work loop. So doing - // it this way moves the check out of the fast path. - throw SelectiveHydrationException; - } - } // If we did not selectively hydrate, we'll continue rendering without - // hydrating. Mark this tree as suspended to prevent it from committing - // outside a transition. - // - // This path should only happen if the hydration lane already suspended. - // Currently, it also happens during sync updates because there is no - // hydration lane for sync updates. - // TODO: We should ideally have a sync hydration lane that we can apply to do - // a pass where we hydrate this subtree in place using the previous Context and then - // reapply the update afterwards. - - if (isSuspenseInstancePending()); - else { - renderDidSuspendDelayIfPossible(); - } + initSuspenseListRenderState(workInProgress, true, // isBackwards + _tail, null, // last + tailMode); + break; + } - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } else if (isSuspenseInstancePending()) { - // This component is still pending more data from the server, so we can't hydrate its - // content. We treat it as if this component suspended itself. It might seem as if - // we could just try to render it client-side instead. However, this will perform a - // lot of unnecessary work and is unlikely to complete since it often will suspend - // on missing data anyway. Additionally, the server might be able to render more - // than we can on the client yet. In that case we'd end up with more fallback states - // on the client than if we just leave it alone. If the server times out or errors - // these should update this boundary to the permanent Fallback state instead. - // Mark it as having captured (i.e. suspended). - workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment. - - workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result. - - retryDehydratedSuspenseBoundary.bind(null, current); - registerSuspenseInstanceRetry(); - return null; - } else { - var primaryChildren = nextProps.children; - var primaryChildFragment = mountSuspensePrimaryChildren( - workInProgress, - primaryChildren - ); // Mark the children as hydrating. This is a fast path to know whether this - // tree is part of a hydrating tree. This is used to determine if a child - // node has fully mounted yet, and for scheduling event replaying. - // Conceptually this is similar to Placement in that a new subtree is - // inserted into the React tree here. It just happens to not need DOM - // mutations because it already exists. - - primaryChildFragment.flags |= Hydrating; - return primaryChildFragment; + case 'together': + { + initSuspenseListRenderState(workInProgress, false, // isBackwards + null, // tail + null, // last + undefined); + break; } - } else { - // This is the second render pass. We already attempted to hydrated, but - // something either suspended or errored. - if (workInProgress.flags & ForceClientRender) { - // Something errored during hydration. Try again without hydrating. - // The error should've already been logged in throwException. - pushPrimaryTreeSuspenseHandler(workInProgress); - workInProgress.flags &= ~ForceClientRender; - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } else if (workInProgress.memoizedState !== null) { - // Something suspended and we should still be in dehydrated mode. - // Leave the existing child in place. - // Push to avoid a mismatch - pushFallbackTreeSuspenseHandler(workInProgress); - workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there - // but the normal suspense pass doesn't. - workInProgress.flags |= DidCapture; - return null; - } else { - // Suspended but we should no longer be in dehydrated mode. - // Therefore we now have to render the fallback. - pushFallbackTreeSuspenseHandler(workInProgress); - var nextPrimaryChildren = nextProps.children; - var nextFallbackChildren = nextProps.fallback; - var fallbackChildFragment = - mountSuspenseFallbackAfterRetryWithoutHydrating( - current, - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - var _primaryChildFragment4 = workInProgress.child; - _primaryChildFragment4.memoizedState = - mountSuspenseOffscreenState(renderLanes); - _primaryChildFragment4.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - return fallbackChildFragment; + default: + { + // The default reveal order is the same as not having + // a boundary. + workInProgress.memoizedState = null; } - } } + } - function scheduleSuspenseWorkOnFiber(fiber, renderLanes, propagationRoot) { - fiber.lanes = mergeLanes(fiber.lanes, renderLanes); - var alternate = fiber.alternate; + return workInProgress.child; +} - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, renderLanes); - } +function updatePortalComponent(current, workInProgress, renderLanes) { + pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); + var nextChildren = workInProgress.pendingProps; + + if (current === null) { + // Portals are special because we don't append the children during mount + // but at commit. Therefore we need to track insertions which the normal + // flow doesn't do during mount. This doesn't happen at the root because + // the root always starts with a "current" with a null child. + // TODO: Consider unifying this with how the root works. + workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderLanes); + } else { + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } + + return workInProgress.child; +} - scheduleContextWorkOnParentPath( - fiber.return, - renderLanes, - propagationRoot - ); +var hasWarnedAboutUsingNoValuePropOnContextProvider = false; + +function updateContextProvider(current, workInProgress, renderLanes) { + var context; + + { + context = workInProgress.type._context; + } + + var newProps = workInProgress.pendingProps; + var oldProps = workInProgress.memoizedProps; + var newValue = newProps.value; + + { + if (!('value' in newProps)) { + if (!hasWarnedAboutUsingNoValuePropOnContextProvider) { + hasWarnedAboutUsingNoValuePropOnContextProvider = true; + + error('The `value` prop is required for the ``. Did you misspell it or forget to pass it?'); + } } + } - function propagateSuspenseContextChange( - workInProgress, - firstChild, - renderLanes - ) { - // Mark any Suspense boundaries with fallbacks as having work to do. - // If they were previously forced into fallbacks, they may now be able - // to unblock. - var node = firstChild; + pushProvider(workInProgress, context, newValue); - while (node !== null) { - if (node.tag === SuspenseComponent) { - var state = node.memoizedState; + { + if (oldProps !== null) { + var oldValue = oldProps.value; - if (state !== null) { - scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); - } - } else if (node.tag === SuspenseListComponent) { - // If the tail is hidden there might not be an Suspense boundaries - // to schedule work on. In this case we have to schedule it on the - // list itself. - // We don't have to traverse to the children of the list since - // the list will propagate the change when it rerenders. - scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; + if (objectIs(oldValue, newValue)) { + // No change. Bailout early if children are the same. + if (oldProps.children === newProps.children && !hasContextChanged()) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } + } else { + // The context value changed. Search for matching consumers and schedule + // them to update. + propagateContextChange(workInProgress, context, renderLanes); + } + } + } - if (node === workInProgress) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow - - while (node.sibling === null) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (node.return === null || node.return === workInProgress) { - return; - } + var newChildren = newProps.children; + reconcileChildren(current, workInProgress, newChildren, renderLanes); + return workInProgress.child; +} - node = node.return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow +function updateContextConsumer(current, workInProgress, renderLanes) { + var context; - node.sibling.return = node.return; - node = node.sibling; + { + context = workInProgress.type; + + { + if (context._context !== undefined) { + context = context._context; } } + } - function findLastContentRow(firstChild) { - // This is going to find the last row among these children that is already - // showing content on the screen, as opposed to being in fallback state or - // new. If a row has multiple Suspense boundaries, any of them being in the - // fallback state, counts as the whole row being in a fallback state. - // Note that the "rows" will be workInProgress, but any nested children - // will still be current since we haven't rendered them yet. The mounted - // order may not be the same as the new order. We use the new order. - var row = firstChild; - var lastContentRow = null; + var newProps = workInProgress.pendingProps; + var render = newProps.children; - while (row !== null) { - var currentRow = row.alternate; // New rows can't be content rows. + { + if (typeof render !== 'function') { + error('A context consumer was rendered with multiple children, or a child ' + "that isn't a function. A context consumer expects a single child " + 'that is a function. If you did pass a function, make sure there ' + 'is no trailing or leading whitespace around it.'); + } + } - if (currentRow !== null && findFirstSuspended(currentRow) === null) { - lastContentRow = row; - } + prepareToReadContext(workInProgress, renderLanes); + var newValue = readContext(context); - row = row.sibling; - } + { + markComponentRenderStarted(workInProgress); + } - return lastContentRow; - } + var newChildren; - function validateRevealOrder(revealOrder) { - { - if ( - revealOrder !== undefined && - revealOrder !== "forwards" && - revealOrder !== "backwards" && - revealOrder !== "together" && - !didWarnAboutRevealOrder[revealOrder] - ) { - didWarnAboutRevealOrder[revealOrder] = true; - - if (typeof revealOrder === "string") { - switch (revealOrder.toLowerCase()) { - case "together": - case "forwards": - case "backwards": { - error( - '"%s" is not a valid value for revealOrder on . ' + - 'Use lowercase "%s" instead.', - revealOrder, - revealOrder.toLowerCase() - ); + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + newChildren = render(newValue); + setIsRendering(false); + } - break; - } + { + markComponentRenderStopped(); + } // React DevTools reads this flag. - case "forward": - case "backward": { - error( - '"%s" is not a valid value for revealOrder on . ' + - 'React uses the -s suffix in the spelling. Use "%ss" instead.', - revealOrder, - revealOrder.toLowerCase() - ); - break; - } + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, newChildren, renderLanes); + return workInProgress.child; +} - default: - error( - '"%s" is not a supported revealOrder on . ' + - 'Did you mean "together", "forwards" or "backwards"?', - revealOrder - ); +function markWorkInProgressReceivedUpdate() { + didReceiveUpdate = true; +} - break; - } - } else { - error( - "%s is not a supported value for revealOrder on . " + - 'Did you mean "together", "forwards" or "backwards"?', - revealOrder - ); - } - } - } - } +function resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress) { + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + if (current !== null) { + // A lazy component only mounts if it suspended inside a non- + // concurrent tree, in an inconsistent state. We want to treat it like + // a new mount, even though an empty version of it already committed. + // Disconnect the alternate pointers. + current.alternate = null; + workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect - function validateTailOptions(tailMode, revealOrder) { - { - if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) { - if (tailMode !== "collapsed" && tailMode !== "hidden") { - didWarnAboutTailOptions[tailMode] = true; - - error( - '"%s" is not a supported value for tail on . ' + - 'Did you mean "collapsed" or "hidden"?', - tailMode - ); - } else if ( - revealOrder !== "forwards" && - revealOrder !== "backwards" - ) { - didWarnAboutTailOptions[tailMode] = true; - - error( - ' is only valid if revealOrder is ' + - '"forwards" or "backwards". ' + - 'Did you mean to specify revealOrder="forwards"?', - tailMode - ); - } - } - } + workInProgress.flags |= Placement; } + } +} - function validateSuspenseListNestedChild(childSlot, index) { - { - var isAnArray = isArray(childSlot); - var isIterable = - !isAnArray && typeof getIteratorFn(childSlot) === "function"; - - if (isAnArray || isIterable) { - var type = isAnArray ? "array" : "iterable"; - - error( - "A nested %s was passed to row #%s in . Wrap it in " + - "an additional SuspenseList to configure its revealOrder: " + - " ... " + - "{%s} ... " + - "", - type, - index, - type - ); +function bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes) { + if (current !== null) { + // Reuse previous dependencies + workInProgress.dependencies = current.dependencies; + } - return false; - } - } + { + // Don't update "base" render times for bailouts. + stopProfilerTimerIfRunning(); + } - return true; + markSkippedUpdateLanes(workInProgress.lanes); // Check if the children have any pending work. + + if (!includesSomeLane(renderLanes, workInProgress.childLanes)) { + // The children don't have any work either. We can skip them. + // TODO: Once we add back resuming, we should check if the children are + // a work-in-progress set. If so, we need to transfer their effects. + { + return null; } + } // This fiber doesn't have work, but its subtree does. Clone the child + // fibers and continue. - function validateSuspenseListChildren(children, revealOrder) { - { - if ( - (revealOrder === "forwards" || revealOrder === "backwards") && - children !== undefined && - children !== null && - children !== false - ) { - if (isArray(children)) { - for (var i = 0; i < children.length; i++) { - if (!validateSuspenseListNestedChild(children[i], i)) { - return; - } - } - } else { - var iteratorFn = getIteratorFn(children); - if (typeof iteratorFn === "function") { - var childrenIterator = iteratorFn.call(children); + cloneChildFibers(current, workInProgress); + return workInProgress.child; +} - if (childrenIterator) { - var step = childrenIterator.next(); - var _i = 0; +function remountFiber(current, oldWorkInProgress, newWorkInProgress) { + { + var returnFiber = oldWorkInProgress.return; - for (; !step.done; step = childrenIterator.next()) { - if (!validateSuspenseListNestedChild(step.value, _i)) { - return; - } + if (returnFiber === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Cannot swap the root fiber.'); + } // Disconnect from the old current. + // It will get deleted. - _i++; - } - } - } else { - error( - 'A single row was passed to a . ' + - "This is not useful since it needs multiple rows. " + - "Did you mean to pass multiple children or an array?", - revealOrder - ); - } - } - } - } - } - function initSuspenseListRenderState( - workInProgress, - isBackwards, - tail, - lastContentRow, - tailMode - ) { - var renderState = workInProgress.memoizedState; - - if (renderState === null) { - workInProgress.memoizedState = { - isBackwards: isBackwards, - rendering: null, - renderingStartTime: 0, - last: lastContentRow, - tail: tail, - tailMode: tailMode - }; - } else { - // We can reuse the existing object from previous renders. - renderState.isBackwards = isBackwards; - renderState.rendering = null; - renderState.renderingStartTime = 0; - renderState.last = lastContentRow; - renderState.tail = tail; - renderState.tailMode = tailMode; - } - } // This can end up rendering this component multiple passes. - // The first pass splits the children fibers into two sets. A head and tail. - // We first render the head. If anything is in fallback state, we do another - // pass through beginWork to rerender all children (including the tail) with - // the force suspend context. If the first render didn't have anything in - // in fallback state. Then we render each row in the tail one-by-one. - // That happens in the completeWork phase without going back to beginWork. - - function updateSuspenseListComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; - var revealOrder = nextProps.revealOrder; - var tailMode = nextProps.tail; - var newChildren = nextProps.children; - validateRevealOrder(revealOrder); - validateTailOptions(tailMode, revealOrder); - validateSuspenseListChildren(newChildren, revealOrder); - reconcileChildren(current, workInProgress, newChildren, renderLanes); - var suspenseContext = suspenseStackCursor.current; - var shouldForceFallback = hasSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - - if (shouldForceFallback) { - suspenseContext = setShallowSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - workInProgress.flags |= DidCapture; - } else { - var didSuspendBefore = - current !== null && (current.flags & DidCapture) !== NoFlags$1; + current.alternate = null; + oldWorkInProgress.alternate = null; // Connect to the new tree. - if (didSuspendBefore) { - // If we previously forced a fallback, we need to schedule work - // on any nested boundaries to let them know to try to render - // again. This is the same as context updating. - propagateSuspenseContextChange( - workInProgress, - workInProgress.child, - renderLanes - ); - } + newWorkInProgress.index = oldWorkInProgress.index; + newWorkInProgress.sibling = oldWorkInProgress.sibling; + newWorkInProgress.return = oldWorkInProgress.return; + newWorkInProgress.ref = oldWorkInProgress.ref; - suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); - } + { + newWorkInProgress._debugInfo = oldWorkInProgress._debugInfo; + } // Replace the child/sibling pointers above it. - pushSuspenseListContext(workInProgress, suspenseContext); - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - // In legacy mode, SuspenseList doesn't work so we just - // use make it a noop by treating it as the default revealOrder. - workInProgress.memoizedState = null; - } else { - switch (revealOrder) { - case "forwards": { - var lastContentRow = findLastContentRow(workInProgress.child); - var tail; - - if (lastContentRow === null) { - // The whole list is part of the tail. - // TODO: We could fast path by just rendering the tail now. - tail = workInProgress.child; - workInProgress.child = null; - } else { - // Disconnect the tail rows after the content row. - // We're going to render them separately later. - tail = lastContentRow.sibling; - lastContentRow.sibling = null; - } + if (oldWorkInProgress === returnFiber.child) { + returnFiber.child = newWorkInProgress; + } else { + var prevSibling = returnFiber.child; - initSuspenseListRenderState( - workInProgress, - false, // isBackwards - tail, - lastContentRow, - tailMode - ); - break; - } + if (prevSibling === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Expected parent to have a child.'); + } // $FlowFixMe[incompatible-use] found when upgrading Flow - case "backwards": { - // We're going to find the first row that has existing content. - // At the same time we're going to reverse the list of everything - // we pass in the meantime. That's going to be our tail in reverse - // order. - var _tail = null; - var row = workInProgress.child; - workInProgress.child = null; - while (row !== null) { - var currentRow = row.alternate; // New rows can't be content rows. + while (prevSibling.sibling !== oldWorkInProgress) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + prevSibling = prevSibling.sibling; - if ( - currentRow !== null && - findFirstSuspended(currentRow) === null - ) { - // This is the beginning of the main content. - workInProgress.child = row; - break; - } + if (prevSibling === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Expected to find the previous sibling.'); + } + } // $FlowFixMe[incompatible-use] found when upgrading Flow - var nextRow = row.sibling; - row.sibling = _tail; - _tail = row; - row = nextRow; - } // TODO: If workInProgress.child is null, we can continue on the tail immediately. - - initSuspenseListRenderState( - workInProgress, - true, // isBackwards - _tail, - null, // last - tailMode - ); - break; - } - case "together": { - initSuspenseListRenderState( - workInProgress, - false, // isBackwards - null, // tail - null, // last - undefined - ); - break; - } + prevSibling.sibling = newWorkInProgress; + } // Delete the old fiber and place the new one. + // Since the old fiber is disconnected, we have to schedule it manually. - default: { - // The default reveal order is the same as not having - // a boundary. - workInProgress.memoizedState = null; - } - } - } - return workInProgress.child; + var deletions = returnFiber.deletions; + + if (deletions === null) { + returnFiber.deletions = [current]; + returnFiber.flags |= ChildDeletion; + } else { + deletions.push(current); } - function updatePortalComponent(current, workInProgress, renderLanes) { - pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); - var nextChildren = workInProgress.pendingProps; - - if (current === null) { - // Portals are special because we don't append the children during mount - // but at commit. Therefore we need to track insertions which the normal - // flow doesn't do during mount. This doesn't happen at the root because - // the root always starts with a "current" with a null child. - // TODO: Consider unifying this with how the root works. - workInProgress.child = reconcileChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } else { - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - } + newWorkInProgress.flags |= Placement; // Restart work from the new fiber. - return workInProgress.child; - } + return newWorkInProgress; + } +} - var hasWarnedAboutUsingNoValuePropOnContextProvider = false; +function checkScheduledUpdateOrContext(current, renderLanes) { + // Before performing an early bailout, we must check if there are pending + // updates or context. + var updateLanes = current.lanes; - function updateContextProvider(current, workInProgress, renderLanes) { - var context; + if (includesSomeLane(updateLanes, renderLanes)) { + return true; + } // No pending update, but because context is propagated lazily, we need + + return false; +} + +function attemptEarlyBailoutIfNoScheduledUpdate(current, workInProgress, renderLanes) { + // This fiber does not have any pending work. Bailout without entering + // the begin phase. There's still some bookkeeping we that needs to be done + // in this optimized path, mostly pushing stuff onto the stack. + switch (workInProgress.tag) { + case HostRoot: + pushHostRootContext(workInProgress); { - context = workInProgress.type._context; + var cache = current.memoizedState.cache; + pushCacheProvider(workInProgress, cache); } + break; - var newProps = workInProgress.pendingProps; - var oldProps = workInProgress.memoizedProps; - var newValue = newProps.value; + case HostSingleton: + case HostComponent: + pushHostContext(workInProgress); + break; + case ClassComponent: { - if (!("value" in newProps)) { - if (!hasWarnedAboutUsingNoValuePropOnContextProvider) { - hasWarnedAboutUsingNoValuePropOnContextProvider = true; + var Component = workInProgress.type; - error( - "The `value` prop is required for the ``. Did you misspell it or forget to pass it?" - ); - } + if (isContextProvider(Component)) { + pushContextProvider(workInProgress); } + + break; } - pushProvider(workInProgress, context, newValue); + case HostPortal: + pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); + break; + case ContextProvider: { - if (oldProps !== null) { - var oldValue = oldProps.value; - - if (objectIs(oldValue, newValue)) { - // No change. Bailout early if children are the same. - if ( - oldProps.children === newProps.children && - !hasContextChanged() - ) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } - } else { - // The context value changed. Search for matching consumers and schedule - // them to update. - propagateContextChange(workInProgress, context, renderLanes); - } - } - } + var newValue = workInProgress.memoizedProps.value; + var context; - var newChildren = newProps.children; - reconcileChildren(current, workInProgress, newChildren, renderLanes); - return workInProgress.child; - } + { + context = workInProgress.type._context; + } - function updateContextConsumer(current, workInProgress, renderLanes) { - var context; + pushProvider(workInProgress, context, newValue); + break; + } + case Profiler: { - context = workInProgress.type; + // Profiler should only call onRender when one of its descendants actually rendered. + var hasChildWork = includesSomeLane(renderLanes, workInProgress.childLanes); + + if (hasChildWork) { + workInProgress.flags |= Update; + } { - if (context._context !== undefined) { - context = context._context; - } + // Reset effect durations for the next eventual effect phase. + // These are reset during render to allow the DevTools commit hook a chance to read them, + var stateNode = workInProgress.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; } } - var newProps = workInProgress.pendingProps; - var render = newProps.children; + break; + case SuspenseComponent: { - if (typeof render !== "function") { - error( - "A context consumer was rendered with multiple children, or a child " + - "that isn't a function. A context consumer expects a single child " + - "that is a function. If you did pass a function, make sure there " + - "is no trailing or leading whitespace around it." - ); - } - } + var state = workInProgress.memoizedState; - prepareToReadContext(workInProgress, renderLanes); - var newValue = readContext(context); + if (state !== null) { + if (state.dehydrated !== null) { + // We're not going to render the children, so this is just to maintain + // push/pop symmetry + pushPrimaryTreeSuspenseHandler(workInProgress); // We know that this component will suspend again because if it has + // been unsuspended it has committed as a resolved Suspense component. + // If it needs to be retried, it should have work scheduled on it. - { - markComponentRenderStarted(workInProgress); - } + workInProgress.flags |= DidCapture; // We should never render the children of a dehydrated boundary until we + // upgrade it. We return null instead of bailoutOnAlreadyFinishedWork. - var newChildren; + return null; + } // If this boundary is currently timed out, we need to decide + // whether to retry the primary children, or to skip over it and + // go straight to the fallback. Check the priority of the primary + // child fragment. - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - newChildren = render(newValue); - setIsRendering(false); - } - { - markComponentRenderStopped(); - } // React DevTools reads this flag. + var primaryChildFragment = workInProgress.child; + var primaryChildLanes = primaryChildFragment.childLanes; - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, newChildren, renderLanes); - return workInProgress.child; - } + if (includesSomeLane(renderLanes, primaryChildLanes)) { + // The primary children have pending work. Use the normal path + // to attempt to render the primary children again. + return updateSuspenseComponent(current, workInProgress, renderLanes); + } else { + // The primary child fragment does not have pending work marked + // on it + pushPrimaryTreeSuspenseHandler(workInProgress); // The primary children do not have pending work with sufficient + // priority. Bailout. - function markWorkInProgressReceivedUpdate() { - didReceiveUpdate = true; - } + var child = bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); - function resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress) { - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - if (current !== null) { - // A lazy component only mounts if it suspended inside a non- - // concurrent tree, in an inconsistent state. We want to treat it like - // a new mount, even though an empty version of it already committed. - // Disconnect the alternate pointers. - current.alternate = null; - workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect - - workInProgress.flags |= Placement; + if (child !== null) { + // The fallback children have pending work. Skip over the + // primary children and work on the fallback. + return child.sibling; + } else { + // Note: We can return `null` here because we already checked + // whether there were nested context consumers, via the call to + // `bailoutOnAlreadyFinishedWork` above. + return null; + } + } + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); } - } - } - function bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ) { - if (current !== null) { - // Reuse previous dependencies - workInProgress.dependencies = current.dependencies; + break; } + case SuspenseListComponent: { - // Don't update "base" render times for bailouts. - stopProfilerTimerIfRunning(); - } + var didSuspendBefore = (current.flags & DidCapture) !== NoFlags$1; - markSkippedUpdateLanes(workInProgress.lanes); // Check if the children have any pending work. + var _hasChildWork = includesSomeLane(renderLanes, workInProgress.childLanes); - if (!includesSomeLane(renderLanes, workInProgress.childLanes)) { - // The children don't have any work either. We can skip them. - // TODO: Once we add back resuming, we should check if the children are - // a work-in-progress set. If so, we need to transfer their effects. - { - return null; - } - } // This fiber doesn't have work, but its subtree does. Clone the child - // fibers and continue. + if (didSuspendBefore) { + if (_hasChildWork) { + // If something was in fallback state last time, and we have all the + // same children then we're still in progressive loading state. + // Something might get unblocked by state updates or retries in the + // tree which will affect the tail. So we need to use the normal + // path to compute the correct tail. + return updateSuspenseListComponent(current, workInProgress, renderLanes); + } // If none of the children had any work, that means that none of + // them got retried so they'll still be blocked in the same way + // as before. We can fast bail out. - cloneChildFibers(current, workInProgress); - return workInProgress.child; - } - function remountFiber(current, oldWorkInProgress, newWorkInProgress) { - { - var returnFiber = oldWorkInProgress.return; + workInProgress.flags |= DidCapture; + } // If nothing suspended before and we're rendering the same children, + // then the tail doesn't matter. Anything new that suspends will work + // in the "together" mode, so we can continue from the state we had. - if (returnFiber === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Cannot swap the root fiber."); - } // Disconnect from the old current. - // It will get deleted. - current.alternate = null; - oldWorkInProgress.alternate = null; // Connect to the new tree. + var renderState = workInProgress.memoizedState; - newWorkInProgress.index = oldWorkInProgress.index; - newWorkInProgress.sibling = oldWorkInProgress.sibling; - newWorkInProgress.return = oldWorkInProgress.return; - newWorkInProgress.ref = oldWorkInProgress.ref; + if (renderState !== null) { + // Reset to the "together" mode in case we've started a different + // update in the past but didn't complete it. + renderState.rendering = null; + renderState.tail = null; + renderState.lastEffect = null; + } - { - newWorkInProgress._debugInfo = oldWorkInProgress._debugInfo; - } // Replace the child/sibling pointers above it. + pushSuspenseListContext(workInProgress, suspenseStackCursor.current); - if (oldWorkInProgress === returnFiber.child) { - returnFiber.child = newWorkInProgress; + if (_hasChildWork) { + break; } else { - var prevSibling = returnFiber.child; + // If none of the children had any work, that means that none of + // them got retried so they'll still be blocked in the same way + // as before. We can fast bail out. + return null; + } + } - if (prevSibling === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Expected parent to have a child."); - } // $FlowFixMe[incompatible-use] found when upgrading Flow + case OffscreenComponent: + case LegacyHiddenComponent: + { + // Need to check if the tree still needs to be deferred. This is + // almost identical to the logic used in the normal update path, + // so we'll just enter that. The only difference is we'll bail out + // at the next level instead of this one, because the child props + // have not changed. Which is fine. + // TODO: Probably should refactor `beginWork` to split the bailout + // path from the normal path. I'm tempted to do a labeled break here + // but I won't :) + workInProgress.lanes = NoLanes; + return updateOffscreenComponent(current, workInProgress, renderLanes); + } - while (prevSibling.sibling !== oldWorkInProgress) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - prevSibling = prevSibling.sibling; + case CacheComponent: + { + { + var _cache = current.memoizedState.cache; + pushCacheProvider(workInProgress, _cache); + } - if (prevSibling === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Expected to find the previous sibling."); - } - } // $FlowFixMe[incompatible-use] found when upgrading Flow + break; + } + } - prevSibling.sibling = newWorkInProgress; - } // Delete the old fiber and place the new one. - // Since the old fiber is disconnected, we have to schedule it manually. + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); +} - var deletions = returnFiber.deletions; +function beginWork(current, workInProgress, renderLanes) { + { + if (workInProgress._debugNeedsRemount && current !== null) { + // This will restart the begin phase with a new fiber. + return remountFiber(current, workInProgress, createFiberFromTypeAndProps(workInProgress.type, workInProgress.key, workInProgress.pendingProps, workInProgress._debugOwner || null, workInProgress.mode, workInProgress.lanes)); + } + } - if (deletions === null) { - returnFiber.deletions = [current]; - returnFiber.flags |= ChildDeletion; - } else { - deletions.push(current); - } + if (current !== null) { + var oldProps = current.memoizedProps; + var newProps = workInProgress.pendingProps; - newWorkInProgress.flags |= Placement; // Restart work from the new fiber. + if (oldProps !== newProps || hasContextChanged() || ( // Force a re-render if the implementation changed due to hot reload: + workInProgress.type !== current.type )) { + // If props or context changed, mark the fiber as having performed work. + // This may be unset if the props are determined to be equal later (memo). + didReceiveUpdate = true; + } else { + // Neither props nor legacy context changes. Check if there's a pending + // update or context change. + var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext(current, renderLanes); + + if (!hasScheduledUpdateOrContext && // If this is the second pass of an error or suspense boundary, there + // may not be work scheduled on `current`, so we check for this flag. + (workInProgress.flags & DidCapture) === NoFlags$1) { + // No pending updates or context. Bail out now. + didReceiveUpdate = false; + return attemptEarlyBailoutIfNoScheduledUpdate(current, workInProgress, renderLanes); + } - return newWorkInProgress; + if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { + // This is a special case that only exists for legacy mode. + // See https://github.com/facebook/react/pull/19216. + didReceiveUpdate = true; + } else { + // An update was scheduled on this fiber, but there are no new props + // nor legacy context. Set this to false. If an update queue or context + // consumer produces a changed value, it will set this to true. Otherwise, + // the component will assume the children have not changed and bail out. + didReceiveUpdate = false; } } + } else { + didReceiveUpdate = false; + } // Before entering the begin phase, clear pending update priority. + // TODO: This assumes that we're about to evaluate the component and process + // the update queue. However, there's an exception: SimpleMemoComponent + // sometimes bails out later in the begin phase. This indicates that we should + // move this assignment out of the common path and into each branch. - function checkScheduledUpdateOrContext(current, renderLanes) { - // Before performing an early bailout, we must check if there are pending - // updates or context. - var updateLanes = current.lanes; - - if (includesSomeLane(updateLanes, renderLanes)) { - return true; - } // No pending update, but because context is propagated lazily, we need - - return false; - } - function attemptEarlyBailoutIfNoScheduledUpdate( - current, - workInProgress, - renderLanes - ) { - // This fiber does not have any pending work. Bailout without entering - // the begin phase. There's still some bookkeeping we that needs to be done - // in this optimized path, mostly pushing stuff onto the stack. - switch (workInProgress.tag) { - case HostRoot: - pushHostRootContext(workInProgress); + workInProgress.lanes = NoLanes; - { - var cache = current.memoizedState.cache; - pushCacheProvider(workInProgress, cache); - } - break; + switch (workInProgress.tag) { + case LazyComponent: + { + var elementType = workInProgress.elementType; + return mountLazyComponent(current, workInProgress, elementType, renderLanes); + } - case HostSingleton: - case HostComponent: - pushHostContext(workInProgress); - break; + case FunctionComponent: + { + var Component = workInProgress.type; + var unresolvedProps = workInProgress.pendingProps; + var resolvedProps = workInProgress.elementType === Component ? unresolvedProps : resolveDefaultPropsOnNonClassComponent(Component, unresolvedProps); + return updateFunctionComponent(current, workInProgress, Component, resolvedProps, renderLanes); + } - case ClassComponent: { - var Component = workInProgress.type; + case ClassComponent: + { + var _Component = workInProgress.type; + var _unresolvedProps = workInProgress.pendingProps; - if (isContextProvider(Component)) { - pushContextProvider(workInProgress); - } + var _resolvedProps4 = resolveClassComponentProps(_Component, _unresolvedProps, workInProgress.elementType === _Component); - break; - } + return updateClassComponent(current, workInProgress, _Component, _resolvedProps4, renderLanes); + } - case HostPortal: - pushHostContainer( - workInProgress, - workInProgress.stateNode.containerInfo - ); - break; + case HostRoot: + return updateHostRoot(current, workInProgress, renderLanes); - case ContextProvider: { - var newValue = workInProgress.memoizedProps.value; - var context; + case HostHoistable: - { - context = workInProgress.type._context; - } + // Fall through - pushProvider(workInProgress, context, newValue); - break; - } + case HostSingleton: - case Profiler: - { - // Profiler should only call onRender when one of its descendants actually rendered. - var hasChildWork = includesSomeLane( - renderLanes, - workInProgress.childLanes - ); + // Fall through - if (hasChildWork) { - workInProgress.flags |= Update; - } + case HostComponent: + return updateHostComponent$1(current, workInProgress, renderLanes); - { - // Reset effect durations for the next eventual effect phase. - // These are reset during render to allow the DevTools commit hook a chance to read them, - var stateNode = workInProgress.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } - } + case HostText: + return updateHostText$1(); - break; + case SuspenseComponent: + return updateSuspenseComponent(current, workInProgress, renderLanes); - case SuspenseComponent: { - var state = workInProgress.memoizedState; + case HostPortal: + return updatePortalComponent(current, workInProgress, renderLanes); - if (state !== null) { - if (state.dehydrated !== null) { - // We're not going to render the children, so this is just to maintain - // push/pop symmetry - pushPrimaryTreeSuspenseHandler(workInProgress); // We know that this component will suspend again because if it has - // been unsuspended it has committed as a resolved Suspense component. - // If it needs to be retried, it should have work scheduled on it. + case ForwardRef: + { + var type = workInProgress.type; + var _unresolvedProps2 = workInProgress.pendingProps; - workInProgress.flags |= DidCapture; // We should never render the children of a dehydrated boundary until we - // upgrade it. We return null instead of bailoutOnAlreadyFinishedWork. + var _resolvedProps5 = workInProgress.elementType === type ? _unresolvedProps2 : resolveDefaultPropsOnNonClassComponent(type, _unresolvedProps2); - return null; - } // If this boundary is currently timed out, we need to decide - // whether to retry the primary children, or to skip over it and - // go straight to the fallback. Check the priority of the primary - // child fragment. + return updateForwardRef(current, workInProgress, type, _resolvedProps5, renderLanes); + } - var primaryChildFragment = workInProgress.child; - var primaryChildLanes = primaryChildFragment.childLanes; - - if (includesSomeLane(renderLanes, primaryChildLanes)) { - // The primary children have pending work. Use the normal path - // to attempt to render the primary children again. - return updateSuspenseComponent( - current, - workInProgress, - renderLanes - ); - } else { - // The primary child fragment does not have pending work marked - // on it - pushPrimaryTreeSuspenseHandler(workInProgress); // The primary children do not have pending work with sufficient - // priority. Bailout. - - var child = bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - - if (child !== null) { - // The fallback children have pending work. Skip over the - // primary children and work on the fallback. - return child.sibling; - } else { - // Note: We can return `null` here because we already checked - // whether there were nested context consumers, via the call to - // `bailoutOnAlreadyFinishedWork` above. - return null; - } - } - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - } + case Fragment: + return updateFragment(current, workInProgress, renderLanes); - break; - } + case Mode: + return updateMode(current, workInProgress, renderLanes); - case SuspenseListComponent: { - var didSuspendBefore = (current.flags & DidCapture) !== NoFlags$1; - - var _hasChildWork = includesSomeLane( - renderLanes, - workInProgress.childLanes - ); - - if (didSuspendBefore) { - if (_hasChildWork) { - // If something was in fallback state last time, and we have all the - // same children then we're still in progressive loading state. - // Something might get unblocked by state updates or retries in the - // tree which will affect the tail. So we need to use the normal - // path to compute the correct tail. - return updateSuspenseListComponent( - current, - workInProgress, - renderLanes - ); - } // If none of the children had any work, that means that none of - // them got retried so they'll still be blocked in the same way - // as before. We can fast bail out. - - workInProgress.flags |= DidCapture; - } // If nothing suspended before and we're rendering the same children, - // then the tail doesn't matter. Anything new that suspends will work - // in the "together" mode, so we can continue from the state we had. - - var renderState = workInProgress.memoizedState; - - if (renderState !== null) { - // Reset to the "together" mode in case we've started a different - // update in the past but didn't complete it. - renderState.rendering = null; - renderState.tail = null; - renderState.lastEffect = null; - } + case Profiler: + return updateProfiler(current, workInProgress, renderLanes); - pushSuspenseListContext(workInProgress, suspenseStackCursor.current); + case ContextProvider: + return updateContextProvider(current, workInProgress, renderLanes); - if (_hasChildWork) { - break; - } else { - // If none of the children had any work, that means that none of - // them got retried so they'll still be blocked in the same way - // as before. We can fast bail out. - return null; - } - } + case ContextConsumer: + return updateContextConsumer(current, workInProgress, renderLanes); - case OffscreenComponent: - case LegacyHiddenComponent: { - // Need to check if the tree still needs to be deferred. This is - // almost identical to the logic used in the normal update path, - // so we'll just enter that. The only difference is we'll bail out - // at the next level instead of this one, because the child props - // have not changed. Which is fine. - // TODO: Probably should refactor `beginWork` to split the bailout - // path from the normal path. I'm tempted to do a labeled break here - // but I won't :) - workInProgress.lanes = NoLanes; - return updateOffscreenComponent(current, workInProgress, renderLanes); - } + case MemoComponent: + { + var _type = workInProgress.type; + var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props. - case CacheComponent: { - { - var _cache = current.memoizedState.cache; - pushCacheProvider(workInProgress, _cache); - } + var _resolvedProps6 = resolveDefaultPropsOnNonClassComponent(_type, _unresolvedProps3); - break; - } + _resolvedProps6 = resolveDefaultPropsOnNonClassComponent(_type.type, _resolvedProps6); + return updateMemoComponent(current, workInProgress, _type, _resolvedProps6, renderLanes); } - return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); - } - - function beginWork(current, workInProgress, renderLanes) { + case SimpleMemoComponent: { - if (workInProgress._debugNeedsRemount && current !== null) { - // This will restart the begin phase with a new fiber. - return remountFiber( - current, - workInProgress, - createFiberFromTypeAndProps( - workInProgress.type, - workInProgress.key, - workInProgress.pendingProps, - workInProgress._debugOwner || null, - workInProgress.mode, - workInProgress.lanes - ) - ); - } + return updateSimpleMemoComponent(current, workInProgress, workInProgress.type, workInProgress.pendingProps, renderLanes); } - if (current !== null) { - var oldProps = current.memoizedProps; - var newProps = workInProgress.pendingProps; - - if ( - oldProps !== newProps || - hasContextChanged() || // Force a re-render if the implementation changed due to hot reload: - workInProgress.type !== current.type - ) { - // If props or context changed, mark the fiber as having performed work. - // This may be unset if the props are determined to be equal later (memo). - didReceiveUpdate = true; - } else { - // Neither props nor legacy context changes. Check if there's a pending - // update or context change. - var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( - current, - renderLanes - ); - - if ( - !hasScheduledUpdateOrContext && // If this is the second pass of an error or suspense boundary, there - // may not be work scheduled on `current`, so we check for this flag. - (workInProgress.flags & DidCapture) === NoFlags$1 - ) { - // No pending updates or context. Bail out now. - didReceiveUpdate = false; - return attemptEarlyBailoutIfNoScheduledUpdate( - current, - workInProgress, - renderLanes - ); - } - - if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { - // This is a special case that only exists for legacy mode. - // See https://github.com/facebook/react/pull/19216. - didReceiveUpdate = true; - } else { - // An update was scheduled on this fiber, but there are no new props - // nor legacy context. Set this to false. If an update queue or context - // consumer produces a changed value, it will set this to true. Otherwise, - // the component will assume the children have not changed and bail out. - didReceiveUpdate = false; - } - } - } else { - didReceiveUpdate = false; - } // Before entering the begin phase, clear pending update priority. - // TODO: This assumes that we're about to evaluate the component and process - // the update queue. However, there's an exception: SimpleMemoComponent - // sometimes bails out later in the begin phase. This indicates that we should - // move this assignment out of the common path and into each branch. - - workInProgress.lanes = NoLanes; - - switch (workInProgress.tag) { - case LazyComponent: { - var elementType = workInProgress.elementType; - return mountLazyComponent( - current, - workInProgress, - elementType, - renderLanes - ); - } + case IncompleteClassComponent: + { - case FunctionComponent: { - var Component = workInProgress.type; - var unresolvedProps = workInProgress.pendingProps; - var resolvedProps = - workInProgress.elementType === Component - ? unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - Component, - unresolvedProps - ); - return updateFunctionComponent( - current, - workInProgress, - Component, - resolvedProps, - renderLanes - ); - } + var _Component2 = workInProgress.type; + var _unresolvedProps4 = workInProgress.pendingProps; - case ClassComponent: { - var _Component = workInProgress.type; - var _unresolvedProps = workInProgress.pendingProps; - - var _resolvedProps4 = resolveClassComponentProps( - _Component, - _unresolvedProps, - workInProgress.elementType === _Component - ); - - return updateClassComponent( - current, - workInProgress, - _Component, - _resolvedProps4, - renderLanes - ); - } + var _resolvedProps7 = resolveClassComponentProps(_Component2, _unresolvedProps4, workInProgress.elementType === _Component2); - case HostRoot: - return updateHostRoot(current, workInProgress, renderLanes); + return mountIncompleteClassComponent(current, workInProgress, _Component2, _resolvedProps7, renderLanes); + } - case HostHoistable: + case IncompleteFunctionComponent: + { - // Fall through + var _Component3 = workInProgress.type; + var _unresolvedProps5 = workInProgress.pendingProps; - case HostSingleton: + var _resolvedProps8 = resolveClassComponentProps(_Component3, _unresolvedProps5, workInProgress.elementType === _Component3); - // Fall through + return mountIncompleteFunctionComponent(current, workInProgress, _Component3, _resolvedProps8, renderLanes); + } - case HostComponent: - return updateHostComponent$1(current, workInProgress, renderLanes); + case SuspenseListComponent: + { + return updateSuspenseListComponent(current, workInProgress, renderLanes); + } - case HostText: - return updateHostText$1(); + case ScopeComponent: + { - case SuspenseComponent: - return updateSuspenseComponent(current, workInProgress, renderLanes); + break; + } - case HostPortal: - return updatePortalComponent(current, workInProgress, renderLanes); - - case ForwardRef: { - var type = workInProgress.type; - var _unresolvedProps2 = workInProgress.pendingProps; - - var _resolvedProps5 = - workInProgress.elementType === type - ? _unresolvedProps2 - : resolveDefaultPropsOnNonClassComponent(type, _unresolvedProps2); - - return updateForwardRef( - current, - workInProgress, - type, - _resolvedProps5, - renderLanes - ); - } + case OffscreenComponent: + { + return updateOffscreenComponent(current, workInProgress, renderLanes); + } - case Fragment: - return updateFragment(current, workInProgress, renderLanes); + case LegacyHiddenComponent: + { - case Mode: - return updateMode(current, workInProgress, renderLanes); + break; + } - case Profiler: - return updateProfiler(current, workInProgress, renderLanes); - - case ContextProvider: - return updateContextProvider(current, workInProgress, renderLanes); - - case ContextConsumer: - return updateContextConsumer(current, workInProgress, renderLanes); - - case MemoComponent: { - var _type = workInProgress.type; - var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props. - - var _resolvedProps6 = resolveDefaultPropsOnNonClassComponent( - _type, - _unresolvedProps3 - ); - - _resolvedProps6 = resolveDefaultPropsOnNonClassComponent( - _type.type, - _resolvedProps6 - ); - return updateMemoComponent( - current, - workInProgress, - _type, - _resolvedProps6, - renderLanes - ); + case CacheComponent: + { + { + return updateCacheComponent(current, workInProgress, renderLanes); } + } + } - case SimpleMemoComponent: { - return updateSimpleMemoComponent( - current, - workInProgress, - workInProgress.type, - workInProgress.pendingProps, - renderLanes - ); - } + throw new Error("Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + 'React. Please file an issue.'); +} - case IncompleteClassComponent: { - var _Component2 = workInProgress.type; - var _unresolvedProps4 = workInProgress.pendingProps; - - var _resolvedProps7 = resolveClassComponentProps( - _Component2, - _unresolvedProps4, - workInProgress.elementType === _Component2 - ); - - return mountIncompleteClassComponent( - current, - workInProgress, - _Component2, - _resolvedProps7, - renderLanes - ); - } +var valueCursor = createCursor(null); - case IncompleteFunctionComponent: { - var _Component3 = workInProgress.type; - var _unresolvedProps5 = workInProgress.pendingProps; - - var _resolvedProps8 = resolveClassComponentProps( - _Component3, - _unresolvedProps5, - workInProgress.elementType === _Component3 - ); - - return mountIncompleteFunctionComponent( - current, - workInProgress, - _Component3, - _resolvedProps8, - renderLanes - ); - } +var renderer2CursorDEV; - case SuspenseListComponent: { - return updateSuspenseListComponent( - current, - workInProgress, - renderLanes - ); - } +{ + renderer2CursorDEV = createCursor(null); +} - case ScopeComponent: { - break; - } +var rendererSigil; - case OffscreenComponent: { - return updateOffscreenComponent(current, workInProgress, renderLanes); - } +{ + // Use this to detect multiple renderers using the same context + rendererSigil = {}; +} - case LegacyHiddenComponent: { - break; - } +var currentlyRenderingFiber = null; +var lastContextDependency = null; +var lastFullyObservedContext = null; +var isDisallowedContextReadInDEV = false; +function resetContextDependencies() { + // This is called right before React yields execution, to ensure `readContext` + // cannot be called outside the render phase. + currentlyRenderingFiber = null; + lastContextDependency = null; + lastFullyObservedContext = null; + + { + isDisallowedContextReadInDEV = false; + } +} +function enterDisallowedContextReadInDEV() { + { + isDisallowedContextReadInDEV = true; + } +} +function exitDisallowedContextReadInDEV() { + { + isDisallowedContextReadInDEV = false; + } +} +function pushProvider(providerFiber, context, nextValue) { + { + push(valueCursor, context._currentValue2, providerFiber); + context._currentValue2 = nextValue; - case CacheComponent: { - { - return updateCacheComponent(current, workInProgress, renderLanes); - } - } + { + push(renderer2CursorDEV, context._currentRenderer2, providerFiber); + + if (context._currentRenderer2 !== undefined && context._currentRenderer2 !== null && context._currentRenderer2 !== rendererSigil) { + error('Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.'); } - throw new Error( - "Unknown unit of work tag (" + - workInProgress.tag + - "). This error is likely caused by a bug in " + - "React. Please file an issue." - ); + context._currentRenderer2 = rendererSigil; } + } +} +function popProvider(context, providerFiber) { + var currentValue = valueCursor.current; - var valueCursor = createCursor(null); - - var renderer2CursorDEV; + { + context._currentValue2 = currentValue; { - renderer2CursorDEV = createCursor(null); + var currentRenderer2 = renderer2CursorDEV.current; + pop(renderer2CursorDEV, providerFiber); + context._currentRenderer2 = currentRenderer2; } + } - var rendererSigil; + pop(valueCursor, providerFiber); +} +function scheduleContextWorkOnParentPath(parent, renderLanes, propagationRoot) { + // Update the child lanes of all the ancestors, including the alternates. + var node = parent; - { - // Use this to detect multiple renderers using the same context - rendererSigil = {}; - } + while (node !== null) { + var alternate = node.alternate; - var currentlyRenderingFiber = null; - var lastContextDependency = null; - var lastFullyObservedContext = null; - var isDisallowedContextReadInDEV = false; - function resetContextDependencies() { - // This is called right before React yields execution, to ensure `readContext` - // cannot be called outside the render phase. - currentlyRenderingFiber = null; - lastContextDependency = null; - lastFullyObservedContext = null; + if (!isSubsetOfLanes(node.childLanes, renderLanes)) { + node.childLanes = mergeLanes(node.childLanes, renderLanes); - { - isDisallowedContextReadInDEV = false; - } - } - function enterDisallowedContextReadInDEV() { - { - isDisallowedContextReadInDEV = true; - } - } - function exitDisallowedContextReadInDEV() { - { - isDisallowedContextReadInDEV = false; + if (alternate !== null) { + alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); } + } else if (alternate !== null && !isSubsetOfLanes(alternate.childLanes, renderLanes)) { + alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); + } else ; + + if (node === propagationRoot) { + break; } - function pushProvider(providerFiber, context, nextValue) { - { - push(valueCursor, context._currentValue2, providerFiber); - context._currentValue2 = nextValue; - { - push(renderer2CursorDEV, context._currentRenderer2, providerFiber); - - if ( - context._currentRenderer2 !== undefined && - context._currentRenderer2 !== null && - context._currentRenderer2 !== rendererSigil - ) { - error( - "Detected multiple renderers concurrently rendering the " + - "same context provider. This is currently unsupported." - ); - } + node = node.return; + } - context._currentRenderer2 = rendererSigil; - } - } + { + if (node !== propagationRoot) { + error('Expected to find the propagation root when scheduling context work. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function popProvider(context, providerFiber) { - var currentValue = valueCursor.current; + } +} +function propagateContextChange(workInProgress, context, renderLanes) { + { + propagateContextChange_eager(workInProgress, context, renderLanes); + } +} - { - context._currentValue2 = currentValue; +function propagateContextChange_eager(workInProgress, context, renderLanes) { - { - var currentRenderer2 = renderer2CursorDEV.current; - pop(renderer2CursorDEV, providerFiber); - context._currentRenderer2 = currentRenderer2; - } - } + var fiber = workInProgress.child; - pop(valueCursor, providerFiber); - } - function scheduleContextWorkOnParentPath( - parent, - renderLanes, - propagationRoot - ) { - // Update the child lanes of all the ancestors, including the alternates. - var node = parent; + if (fiber !== null) { + // Set the return pointer of the child to the work-in-progress fiber. + fiber.return = workInProgress; + } + + while (fiber !== null) { + var nextFiber = void 0; // Visit this fiber. + + var list = fiber.dependencies; + + if (list !== null) { + nextFiber = fiber.child; + var dependency = list.firstContext; + + while (dependency !== null) { + // Check if the context matches. + if (dependency.context === context) { + // Match! Schedule an update on this fiber. + if (fiber.tag === ClassComponent) { + // Schedule a force update on the work-in-progress. + var lane = pickArbitraryLane(renderLanes); + var update = createUpdate(lane); + update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the + // update to the current fiber, too, which means it will persist even if + // this render is thrown away. Since it's a race condition, not sure it's + // worth fixing. + // Inlined `enqueueUpdate` to remove interleaved update check + + var updateQueue = fiber.updateQueue; + + if (updateQueue === null) ; else { + var sharedQueue = updateQueue.shared; + var pending = sharedQueue.pending; + + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } - while (node !== null) { - var alternate = node.alternate; + sharedQueue.pending = update; + } + } - if (!isSubsetOfLanes(node.childLanes, renderLanes)) { - node.childLanes = mergeLanes(node.childLanes, renderLanes); + fiber.lanes = mergeLanes(fiber.lanes, renderLanes); + var alternate = fiber.alternate; if (alternate !== null) { - alternate.childLanes = mergeLanes( - alternate.childLanes, - renderLanes - ); + alternate.lanes = mergeLanes(alternate.lanes, renderLanes); } - } else if ( - alternate !== null && - !isSubsetOfLanes(alternate.childLanes, renderLanes) - ) { - alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); - } else; - - if (node === propagationRoot) { + + scheduleContextWorkOnParentPath(fiber.return, renderLanes, workInProgress); // Mark the updated lanes on the list, too. + + list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the + // dependency list. + break; } - node = node.return; + dependency = dependency.next; } + } else if (fiber.tag === ContextProvider) { + // Don't scan deeper if this is a matching provider + nextFiber = fiber.type === workInProgress.type ? null : fiber.child; + } else if (fiber.tag === DehydratedFragment) { + // If a dehydrated suspense boundary is in this subtree, we don't know + // if it will have any context consumers in it. The best we can do is + // mark it as having updates. + var parentSuspense = fiber.return; - { - if (node !== propagationRoot) { - error( - "Expected to find the propagation root when scheduling context work. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } - } - function propagateContextChange(workInProgress, context, renderLanes) { - { - propagateContextChange_eager(workInProgress, context, renderLanes); + if (parentSuspense === null) { + throw new Error('We just came from a parent so we must have had a parent. This is a bug in React.'); } - } - function propagateContextChange_eager( - workInProgress, - context, - renderLanes - ) { - var fiber = workInProgress.child; - - if (fiber !== null) { - // Set the return pointer of the child to the work-in-progress fiber. - fiber.return = workInProgress; - } + parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes); + var _alternate = parentSuspense.alternate; - while (fiber !== null) { - var nextFiber = void 0; // Visit this fiber. + if (_alternate !== null) { + _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes); + } // This is intentionally passing this fiber as the parent + // because we want to schedule this fiber as having work + // on its children. We'll use the childLanes on + // this fiber to indicate that a context has changed. - var list = fiber.dependencies; - if (list !== null) { - nextFiber = fiber.child; - var dependency = list.firstContext; + scheduleContextWorkOnParentPath(parentSuspense, renderLanes, workInProgress); + nextFiber = fiber.sibling; + } else { + // Traverse down. + nextFiber = fiber.child; + } - while (dependency !== null) { - // Check if the context matches. - if (dependency.context === context) { - // Match! Schedule an update on this fiber. - if (fiber.tag === ClassComponent) { - // Schedule a force update on the work-in-progress. - var lane = pickArbitraryLane(renderLanes); - var update = createUpdate(lane); - update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the - // update to the current fiber, too, which means it will persist even if - // this render is thrown away. Since it's a race condition, not sure it's - // worth fixing. - // Inlined `enqueueUpdate` to remove interleaved update check + if (nextFiber !== null) { + // Set the return pointer of the child to the work-in-progress fiber. + nextFiber.return = fiber; + } else { + // No child. Traverse to next sibling. + nextFiber = fiber; - var updateQueue = fiber.updateQueue; + while (nextFiber !== null) { + if (nextFiber === workInProgress) { + // We're back to the root of this subtree. Exit. + nextFiber = null; + break; + } - if (updateQueue === null); - else { - var sharedQueue = updateQueue.shared; - var pending = sharedQueue.pending; + var sibling = nextFiber.sibling; - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + if (sibling !== null) { + // Set the return pointer of the sibling to the work-in-progress fiber. + sibling.return = nextFiber.return; + nextFiber = sibling; + break; + } // No more siblings. Traverse up. - sharedQueue.pending = update; - } - } - fiber.lanes = mergeLanes(fiber.lanes, renderLanes); - var alternate = fiber.alternate; + nextFiber = nextFiber.return; + } + } - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, renderLanes); - } + fiber = nextFiber; + } +} +function prepareToReadContext(workInProgress, renderLanes) { + currentlyRenderingFiber = workInProgress; + lastContextDependency = null; + lastFullyObservedContext = null; + var dependencies = workInProgress.dependencies; - scheduleContextWorkOnParentPath( - fiber.return, - renderLanes, - workInProgress - ); // Mark the updated lanes on the list, too. + if (dependencies !== null) { + { + var firstContext = dependencies.firstContext; - list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the - // dependency list. + if (firstContext !== null) { + if (includesSomeLane(dependencies.lanes, renderLanes)) { + // Context list has a pending update. Mark that this fiber performed work. + markWorkInProgressReceivedUpdate(); + } // Reset the work-in-progress list - break; - } - dependency = dependency.next; - } - } else if (fiber.tag === ContextProvider) { - // Don't scan deeper if this is a matching provider - nextFiber = fiber.type === workInProgress.type ? null : fiber.child; - } else if (fiber.tag === DehydratedFragment) { - // If a dehydrated suspense boundary is in this subtree, we don't know - // if it will have any context consumers in it. The best we can do is - // mark it as having updates. - var parentSuspense = fiber.return; - - if (parentSuspense === null) { - throw new Error( - "We just came from a parent so we must have had a parent. This is a bug in React." - ); - } + dependencies.firstContext = null; + } + } + } +} +function readContext(context) { + { + // This warning would fire if you read context inside a Hook like useMemo. + // Unlike the class check below, it's not enforced in production for perf. + if (isDisallowedContextReadInDEV) { + error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + } + } - parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes); - var _alternate = parentSuspense.alternate; - - if (_alternate !== null) { - _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes); - } // This is intentionally passing this fiber as the parent - // because we want to schedule this fiber as having work - // on its children. We'll use the childLanes on - // this fiber to indicate that a context has changed. - - scheduleContextWorkOnParentPath( - parentSuspense, - renderLanes, - workInProgress - ); - nextFiber = fiber.sibling; - } else { - // Traverse down. - nextFiber = fiber.child; - } + return readContextForConsumer(currentlyRenderingFiber, context); +} +function readContextDuringReconciliation(consumer, context, renderLanes) { + if (currentlyRenderingFiber === null) { + prepareToReadContext(consumer, renderLanes); + } - if (nextFiber !== null) { - // Set the return pointer of the child to the work-in-progress fiber. - nextFiber.return = fiber; - } else { - // No child. Traverse to next sibling. - nextFiber = fiber; + return readContextForConsumer(consumer, context); +} - while (nextFiber !== null) { - if (nextFiber === workInProgress) { - // We're back to the root of this subtree. Exit. - nextFiber = null; - break; - } +function readContextForConsumer(consumer, context) { + var value = context._currentValue2; - var sibling = nextFiber.sibling; + if (lastFullyObservedContext === context) ; else { + var contextItem = { + context: context, + memoizedValue: value, + next: null + }; - if (sibling !== null) { - // Set the return pointer of the sibling to the work-in-progress fiber. - sibling.return = nextFiber.return; - nextFiber = sibling; - break; - } // No more siblings. Traverse up. + if (lastContextDependency === null) { + if (consumer === null) { + throw new Error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + } // This is the first dependency for this component. Create a new list. - nextFiber = nextFiber.return; - } - } - fiber = nextFiber; - } + lastContextDependency = contextItem; + consumer.dependencies = { + lanes: NoLanes, + firstContext: contextItem + }; + } else { + // Append a new context item. + lastContextDependency = lastContextDependency.next = contextItem; } - function prepareToReadContext(workInProgress, renderLanes) { - currentlyRenderingFiber = workInProgress; - lastContextDependency = null; - lastFullyObservedContext = null; - var dependencies = workInProgress.dependencies; + } - if (dependencies !== null) { - { - var firstContext = dependencies.firstContext; + return value; +} - if (firstContext !== null) { - if (includesSomeLane(dependencies.lanes, renderLanes)) { - // Context list has a pending update. Mark that this fiber performed work. - markWorkInProgressReceivedUpdate(); - } // Reset the work-in-progress list +// replace it with a lightweight shim that only has the features we use. - dependencies.firstContext = null; - } - } - } +var AbortControllerLocal = typeof AbortController !== 'undefined' ? AbortController : // $FlowFixMe[missing-this-annot] +// $FlowFixMe[prop-missing] +function AbortControllerShim() { + var listeners = []; + var signal = this.signal = { + aborted: false, + addEventListener: function (type, listener) { + listeners.push(listener); } - function readContext(context) { - { - // This warning would fire if you read context inside a Hook like useMemo. - // Unlike the class check below, it's not enforced in production for perf. - if (isDisallowedContextReadInDEV) { - error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - } - } + }; + + this.abort = function () { + signal.aborted = true; + listeners.forEach(function (listener) { + return listener(); + }); + }; +} ; // Intentionally not named imports because Rollup would +// use dynamic dispatch for CommonJS interop named imports. + +var scheduleCallback$1 = Scheduler$1.unstable_scheduleCallback, + NormalPriority = Scheduler$1.unstable_NormalPriority; +var CacheContext = { + $$typeof: REACT_CONTEXT_TYPE, + // We don't use Consumer/Provider for Cache components. So we'll cheat. + Consumer: null, + Provider: null, + // We'll initialize these at the root. + _currentValue: null, + _currentValue2: null, + _threadCount: 0 +} ; + +{ + CacheContext._currentRenderer = null; + CacheContext._currentRenderer2 = null; +} // Creates a new empty Cache instance with a ref-count of 0. The caller is responsible +// for retaining the cache once it is in use (retainCache), and releasing the cache +// once it is no longer needed (releaseCache). + + +function createCache() { + + var cache = { + controller: new AbortControllerLocal(), + data: new Map(), + refCount: 0 + }; + return cache; +} +function retainCache(cache) { - return readContextForConsumer(currentlyRenderingFiber, context); + { + if (cache.controller.signal.aborted) { + warn('A cache instance was retained after it was already freed. ' + 'This likely indicates a bug in React.'); } - function readContextDuringReconciliation(consumer, context, renderLanes) { - if (currentlyRenderingFiber === null) { - prepareToReadContext(consumer, renderLanes); - } + } + + cache.refCount++; +} // Cleanup a cache instance, potentially freeing it if there are no more references + +function releaseCache(cache) { - return readContextForConsumer(consumer, context); + cache.refCount--; + + { + if (cache.refCount < 0) { + warn('A cache instance was released after it was already freed. ' + 'This likely indicates a bug in React.'); } + } - function readContextForConsumer(consumer, context) { - var value = context._currentValue2; + if (cache.refCount === 0) { + scheduleCallback$1(NormalPriority, function () { + cache.controller.abort(); + }); + } +} +function pushCacheProvider(workInProgress, cache) { - if (lastFullyObservedContext === context); - else { - var contextItem = { - context: context, - memoizedValue: value, - next: null - }; + pushProvider(workInProgress, CacheContext, cache); +} +function popCacheProvider(workInProgress, cache) { - if (lastContextDependency === null) { - if (consumer === null) { - throw new Error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - } // This is the first dependency for this component. Create a new list. + popProvider(CacheContext, workInProgress); +} - lastContextDependency = contextItem; - consumer.dependencies = { - lanes: NoLanes, - firstContext: contextItem - }; - } else { - // Append a new context item. - lastContextDependency = lastContextDependency.next = contextItem; - } - } +function requestCurrentTransition() { + var transition = ReactSharedInternals.T; - return value; - } + if (transition !== null) { + // Whenever a transition update is scheduled, register a callback on the + // transition object so we can get the return value of the scope function. + transition._callbacks.add(handleAsyncAction); + } - // replace it with a lightweight shim that only has the features we use. + return transition; +} - var AbortControllerLocal = - typeof AbortController !== "undefined" - ? AbortController // $FlowFixMe[missing-this-annot] - : // $FlowFixMe[prop-missing] - function AbortControllerShim() { - var listeners = []; - var signal = (this.signal = { - aborted: false, - addEventListener: function (type, listener) { - listeners.push(listener); - } - }); +function handleAsyncAction(transition, thenable) { + { + // This is an async action. + entangleAsyncAction(transition, thenable); + } +} - this.abort = function () { - signal.aborted = true; - listeners.forEach(function (listener) { - return listener(); - }); - }; - }; // Intentionally not named imports because Rollup would - // use dynamic dispatch for CommonJS interop named imports. - - var scheduleCallback$1 = Scheduler$1.unstable_scheduleCallback, - NormalPriority = Scheduler$1.unstable_NormalPriority; - var CacheContext = { - $$typeof: REACT_CONTEXT_TYPE, - // We don't use Consumer/Provider for Cache components. So we'll cheat. - Consumer: null, - Provider: null, - // We'll initialize these at the root. - _currentValue: null, - _currentValue2: null, - _threadCount: 0 - }; +function notifyTransitionCallbacks(transition, returnValue) { + var callbacks = transition._callbacks; + callbacks.forEach(function (callback) { + return callback(transition, returnValue); + }); +} // When retrying a Suspense/Offscreen boundary, we restore the cache that was +// used during the previous render by placing it here, on the stack. - { - CacheContext._currentRenderer = null; - CacheContext._currentRenderer2 = null; - } // Creates a new empty Cache instance with a ref-count of 0. The caller is responsible - // for retaining the cache once it is in use (retainCache), and releasing the cache - // once it is no longer needed (releaseCache). - - function createCache() { - var cache = { - controller: new AbortControllerLocal(), - data: new Map(), - refCount: 0 - }; - return cache; - } - function retainCache(cache) { - { - if (cache.controller.signal.aborted) { - warn( - "A cache instance was retained after it was already freed. " + - "This likely indicates a bug in React." - ); - } - } +var resumedCache = createCursor(null); // During the render/synchronous commit phase, we don't actually process the - cache.refCount++; - } // Cleanup a cache instance, potentially freeing it if there are no more references +function peekCacheFromPool() { + // If we're rendering inside a Suspense boundary that is currently hidden, + // we should use the same cache that we used during the previous render, if + // one exists. - function releaseCache(cache) { - cache.refCount--; - { - if (cache.refCount < 0) { - warn( - "A cache instance was released after it was already freed. " + - "This likely indicates a bug in React." - ); - } - } + var cacheResumedFromPreviousRender = resumedCache.current; - if (cache.refCount === 0) { - scheduleCallback$1(NormalPriority, function () { - cache.controller.abort(); - }); - } - } - function pushCacheProvider(workInProgress, cache) { - pushProvider(workInProgress, CacheContext, cache); - } - function popCacheProvider(workInProgress, cache) { - popProvider(CacheContext, workInProgress); - } + if (cacheResumedFromPreviousRender !== null) { + return cacheResumedFromPreviousRender; + } // Otherwise, check the root's cache pool. - function requestCurrentTransition() { - var transition = ReactSharedInternals.T; - if (transition !== null) { - // Whenever a transition update is scheduled, register a callback on the - // transition object so we can get the return value of the scope function. - transition._callbacks.add(handleAsyncAction); - } + var root = getWorkInProgressRoot(); + var cacheFromRootCachePool = root.pooledCache; + return cacheFromRootCachePool; +} - return transition; - } +function requestCacheFromPool(renderLanes) { + // Similar to previous function, except if there's not already a cache in the + // pool, we allocate a new one. + var cacheFromPool = peekCacheFromPool(); + + if (cacheFromPool !== null) { + return cacheFromPool; + } // Create a fresh cache and add it to the root cache pool. A cache can have + // multiple owners: + // - A cache pool that lives on the FiberRoot. This is where all fresh caches + // are originally created (TODO: except during refreshes, until we implement + // this correctly). The root takes ownership immediately when the cache is + // created. Conceptually, root.pooledCache is an Option> (owned), + // and the return value of this function is a &Arc (borrowed). + // - One of several fiber types: host root, cache boundary, suspense + // component. These retain and release in the commit phase. + + + var root = getWorkInProgressRoot(); + var freshCache = createCache(); + root.pooledCache = freshCache; + retainCache(freshCache); + + if (freshCache !== null) { + root.pooledCacheLanes |= renderLanes; + } + + return freshCache; +} +function pushTransition(offscreenWorkInProgress, prevCachePool, newTransitions) { + { + if (prevCachePool === null) { + push(resumedCache, resumedCache.current, offscreenWorkInProgress); + } else { + push(resumedCache, prevCachePool.pool, offscreenWorkInProgress); + } + } +} +function popTransition(workInProgress, current) { + if (current !== null) { - function handleAsyncAction(transition, thenable) { - { - // This is an async action. - entangleAsyncAction(transition, thenable); - } + { + pop(resumedCache, workInProgress); } + } +} +function getSuspendedCache() { + // cache that would have been used to render fresh data during this render, + // if there was any, so that we can resume rendering with the same cache when + // we receive more data. - function notifyTransitionCallbacks(transition, returnValue) { - var callbacks = transition._callbacks; - callbacks.forEach(function (callback) { - return callback(transition, returnValue); - }); - } // When retrying a Suspense/Offscreen boundary, we restore the cache that was - // used during the previous render by placing it here, on the stack. - var resumedCache = createCursor(null); // During the render/synchronous commit phase, we don't actually process the + var cacheFromPool = peekCacheFromPool(); - function peekCacheFromPool() { - // If we're rendering inside a Suspense boundary that is currently hidden, - // we should use the same cache that we used during the previous render, if - // one exists. + if (cacheFromPool === null) { + return null; + } - var cacheResumedFromPreviousRender = resumedCache.current; + return { + // We must also save the parent, so that when we resume we can detect + // a refresh. + parent: CacheContext._currentValue2, + pool: cacheFromPool + }; +} +function getOffscreenDeferredCache() { - if (cacheResumedFromPreviousRender !== null) { - return cacheResumedFromPreviousRender; - } // Otherwise, check the root's cache pool. + var cacheFromPool = peekCacheFromPool(); - var root = getWorkInProgressRoot(); - var cacheFromRootCachePool = root.pooledCache; - return cacheFromRootCachePool; - } - - function requestCacheFromPool(renderLanes) { - // Similar to previous function, except if there's not already a cache in the - // pool, we allocate a new one. - var cacheFromPool = peekCacheFromPool(); - - if (cacheFromPool !== null) { - return cacheFromPool; - } // Create a fresh cache and add it to the root cache pool. A cache can have - // multiple owners: - // - A cache pool that lives on the FiberRoot. This is where all fresh caches - // are originally created (TODO: except during refreshes, until we implement - // this correctly). The root takes ownership immediately when the cache is - // created. Conceptually, root.pooledCache is an Option> (owned), - // and the return value of this function is a &Arc (borrowed). - // - One of several fiber types: host root, cache boundary, suspense - // component. These retain and release in the commit phase. + if (cacheFromPool === null) { + return null; + } - var root = getWorkInProgressRoot(); - var freshCache = createCache(); - root.pooledCache = freshCache; - retainCache(freshCache); + return { + // We must also store the parent, so that when we resume we can detect + // a refresh. + parent: CacheContext._currentValue2, + pool: cacheFromPool + }; +} - if (freshCache !== null) { - root.pooledCacheLanes |= renderLanes; - } +/** + * Tag the fiber with an update effect. This turns a Placement into + * a PlacementAndUpdate. + */ - return freshCache; - } - function pushTransition( - offscreenWorkInProgress, - prevCachePool, - newTransitions - ) { - { - if (prevCachePool === null) { - push(resumedCache, resumedCache.current, offscreenWorkInProgress); - } else { - push(resumedCache, prevCachePool.pool, offscreenWorkInProgress); - } - } - } - function popTransition(workInProgress, current) { - if (current !== null) { - { - pop(resumedCache, workInProgress); - } - } - } - function getSuspendedCache() { - // cache that would have been used to render fresh data during this render, - // if there was any, so that we can resume rendering with the same cache when - // we receive more data. +function markUpdate(workInProgress) { + workInProgress.flags |= Update; +} - var cacheFromPool = peekCacheFromPool(); +function appendAllChildren(parent, workInProgress, needsVisibilityToggle, isHidden) { + { + // We only have the top Fiber that was created but we need recurse down its + // children to find all the terminal nodes. + var node = workInProgress.child; - if (cacheFromPool === null) { - return null; + while (node !== null) { + if (node.tag === HostComponent || node.tag === HostText) { + appendInitialChild(parent, node.stateNode); + } else if (node.tag === HostPortal || (false)) ; else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; } - return { - // We must also save the parent, so that when we resume we can detect - // a refresh. - parent: CacheContext._currentValue2, - pool: cacheFromPool - }; - } - function getOffscreenDeferredCache() { - var cacheFromPool = peekCacheFromPool(); + if (node === workInProgress) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - if (cacheFromPool === null) { - return null; - } - return { - // We must also store the parent, so that when we resume we can detect - // a refresh. - parent: CacheContext._currentValue2, - pool: cacheFromPool - }; - } + while (node.sibling === null) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (node.return === null || node.return === workInProgress) { + return; + } - /** - * Tag the fiber with an update effect. This turns a Placement into - * a PlacementAndUpdate. - */ + node = node.return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function markUpdate(workInProgress) { - workInProgress.flags |= Update; + + node.sibling.return = node.return; + node = node.sibling; + } + } +} // An unfortunate fork of appendAllChildren because we have two different parent types. + +function updateHostComponent(current, workInProgress, type, newProps, renderLanes) { + { + // If we have an alternate, that means this is an update and we need to + // schedule a side-effect to do the updates. + var oldProps = current.memoizedProps; + + if (oldProps === newProps) { + // In mutation mode, this is sufficient for a bailout because + // we won't touch this node even if children changed. + return; + } + + markUpdate(workInProgress); + } +} // This function must be called at the very end of the complete phase, because +// it might throw to suspend, and if the resource immediately loads, the work +// loop will resume rendering as if the work-in-progress completed. So it must +// fully complete. +// TODO: This should ideally move to begin phase, but currently the instance is +// not created until the complete phase. For our existing use cases, host nodes +// that suspend don't have children, so it doesn't matter. But that might not +// always be true in the future. + + +function preloadInstanceAndSuspendIfNeeded(workInProgress, type, props, renderLanes) { + { + // If this flag was set previously, we can remove it. The flag + // represents whether this particular set of props might ever need to + // suspend. The safest thing to do is for maySuspendCommit to always + // return true, but if the renderer is reasonably confident that the + // underlying resource won't be evicted, it can return false as a + // performance optimization. + workInProgress.flags &= ~MaySuspendCommit; + return; + } // Mark this fiber with a flag. This gets set on all host instances +} + +function scheduleRetryEffect(workInProgress, retryQueue) { + var wakeables = retryQueue; + + if (wakeables !== null) { + // Schedule an effect to attach a retry listener to the promise. + // TODO: Move to passive phase + workInProgress.flags |= Update; + } else { + // This boundary suspended, but no wakeables were added to the retry + // queue. Check if the renderer suspended commit. If so, this means + // that once the fallback is committed, we can immediately retry + // rendering again, because rendering wasn't actually blocked. Only + // the commit phase. + // TODO: Consider a model where we always schedule an immediate retry, even + // for normal Suspense. That way the retry can partially render up to the + // first thing that suspends. + if (workInProgress.flags & ScheduleRetry) { + var retryLane = // TODO: This check should probably be moved into claimNextRetryLane + // I also suspect that we need some further consolidation of offscreen + // and retry lanes. + workInProgress.tag !== OffscreenComponent ? claimNextRetryLane() : OffscreenLane; + workInProgress.lanes = mergeLanes(workInProgress.lanes, retryLane); + } + } +} + +function updateHostText(current, workInProgress, oldText, newText) { + { + // If the text differs, mark it as an update. All the work in done in commitWork. + if (oldText !== newText) { + markUpdate(workInProgress); } + } +} + +function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) { - function appendAllChildren( - parent, - workInProgress, - needsVisibilityToggle, - isHidden - ) { + switch (renderState.tailMode) { + case 'hidden': { - // We only have the top Fiber that was created but we need recurse down its - // children to find all the terminal nodes. - var node = workInProgress.child; - - while (node !== null) { - if (node.tag === HostComponent || node.tag === HostText) { - appendInitialChild(parent, node.stateNode); - } else if (node.tag === HostPortal || false); - else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + // Any insertions at the end of the tail list after this point + // should be invisible. If there are already mounted boundaries + // anything before them are not considered for collapsing. + // Therefore we need to go through the whole tail to find if + // there are any. + var tailNode = renderState.tail; + var lastTailNode = null; - if (node === workInProgress) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + while (tailNode !== null) { + if (tailNode.alternate !== null) { + lastTailNode = tailNode; + } - while (node.sibling === null) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (node.return === null || node.return === workInProgress) { - return; - } + tailNode = tailNode.sibling; + } // Next we're simply going to delete all insertions after the + // last rendered item. - node = node.return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow - node.sibling.return = node.return; - node = node.sibling; + if (lastTailNode === null) { + // All remaining items in the tail are insertions. + renderState.tail = null; + } else { + // Detach the insertion after the last node that was already + // inserted. + lastTailNode.sibling = null; } + + break; } - } // An unfortunate fork of appendAllChildren because we have two different parent types. - function updateHostComponent( - current, - workInProgress, - type, - newProps, - renderLanes - ) { + case 'collapsed': { - // If we have an alternate, that means this is an update and we need to - // schedule a side-effect to do the updates. - var oldProps = current.memoizedProps; + // Any insertions at the end of the tail list after this point + // should be invisible. If there are already mounted boundaries + // anything before them are not considered for collapsing. + // Therefore we need to go through the whole tail to find if + // there are any. + var _tailNode = renderState.tail; + var _lastTailNode = null; - if (oldProps === newProps) { - // In mutation mode, this is sufficient for a bailout because - // we won't touch this node even if children changed. - return; - } + while (_tailNode !== null) { + if (_tailNode.alternate !== null) { + _lastTailNode = _tailNode; + } - markUpdate(workInProgress); - } - } // This function must be called at the very end of the complete phase, because - // it might throw to suspend, and if the resource immediately loads, the work - // loop will resume rendering as if the work-in-progress completed. So it must - // fully complete. - // TODO: This should ideally move to begin phase, but currently the instance is - // not created until the complete phase. For our existing use cases, host nodes - // that suspend don't have children, so it doesn't matter. But that might not - // always be true in the future. - - function preloadInstanceAndSuspendIfNeeded( - workInProgress, - type, - props, - renderLanes - ) { - { - // If this flag was set previously, we can remove it. The flag - // represents whether this particular set of props might ever need to - // suspend. The safest thing to do is for maySuspendCommit to always - // return true, but if the renderer is reasonably confident that the - // underlying resource won't be evicted, it can return false as a - // performance optimization. - workInProgress.flags &= ~MaySuspendCommit; - return; - } // Mark this fiber with a flag. This gets set on all host instances - } + _tailNode = _tailNode.sibling; + } // Next we're simply going to delete all insertions after the + // last rendered item. - function scheduleRetryEffect(workInProgress, retryQueue) { - var wakeables = retryQueue; - if (wakeables !== null) { - // Schedule an effect to attach a retry listener to the promise. - // TODO: Move to passive phase - workInProgress.flags |= Update; - } else { - // This boundary suspended, but no wakeables were added to the retry - // queue. Check if the renderer suspended commit. If so, this means - // that once the fallback is committed, we can immediately retry - // rendering again, because rendering wasn't actually blocked. Only - // the commit phase. - // TODO: Consider a model where we always schedule an immediate retry, even - // for normal Suspense. That way the retry can partially render up to the - // first thing that suspends. - if (workInProgress.flags & ScheduleRetry) { - var retryLane = // TODO: This check should probably be moved into claimNextRetryLane - // I also suspect that we need some further consolidation of offscreen - // and retry lanes. - workInProgress.tag !== OffscreenComponent - ? claimNextRetryLane() - : OffscreenLane; - workInProgress.lanes = mergeLanes(workInProgress.lanes, retryLane); + if (_lastTailNode === null) { + // All remaining items in the tail are insertions. + if (!hasRenderedATailFallback && renderState.tail !== null) { + // We suspended during the head. We want to show at least one + // row at the tail. So we'll keep on and cut off the rest. + renderState.tail.sibling = null; + } else { + renderState.tail = null; + } + } else { + // Detach the insertion after the last node that was already + // inserted. + _lastTailNode.sibling = null; } + + break; + } + } +} + +function bubbleProperties(completedWork) { + var didBailout = completedWork.alternate !== null && completedWork.alternate.child === completedWork.child; + var newChildLanes = NoLanes; + var subtreeFlags = NoFlags$1; + + if (!didBailout) { + // Bubble up the earliest expiration time. + if ((completedWork.mode & ProfileMode) !== NoMode) { + // In profiling mode, resetChildExpirationTime is also used to reset + // profiler durations. + var actualDuration = completedWork.actualDuration; + var treeBaseDuration = completedWork.selfBaseDuration; + var child = completedWork.child; + + while (child !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(child.lanes, child.childLanes)); + subtreeFlags |= child.subtreeFlags; + subtreeFlags |= child.flags; // When a fiber is cloned, its actualDuration is reset to 0. This value will + // only be updated if work is done on the fiber (i.e. it doesn't bailout). + // When work is done, it should bubble to the parent's actualDuration. If + // the fiber has not been cloned though, (meaning no work was done), then + // this value will reflect the amount of time spent working on a previous + // render. In that case it should not bubble. We determine whether it was + // cloned by comparing the child pointer. + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + + actualDuration += child.actualDuration; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + + treeBaseDuration += child.treeBaseDuration; + child = child.sibling; } - } - function updateHostText(current, workInProgress, oldText, newText) { - { - // If the text differs, mark it as an update. All the work in done in commitWork. - if (oldText !== newText) { - markUpdate(workInProgress); - } + completedWork.actualDuration = actualDuration; + completedWork.treeBaseDuration = treeBaseDuration; + } else { + var _child = completedWork.child; + + while (_child !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child.lanes, _child.childLanes)); + subtreeFlags |= _child.subtreeFlags; + subtreeFlags |= _child.flags; // Update the return pointer so the tree is consistent. This is a code + // smell because it assumes the commit phase is never concurrent with + // the render phase. Will address during refactor to alternate model. + + _child.return = completedWork; + _child = _child.sibling; } } - function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) { - switch (renderState.tailMode) { - case "hidden": { - // Any insertions at the end of the tail list after this point - // should be invisible. If there are already mounted boundaries - // anything before them are not considered for collapsing. - // Therefore we need to go through the whole tail to find if - // there are any. - var tailNode = renderState.tail; - var lastTailNode = null; - - while (tailNode !== null) { - if (tailNode.alternate !== null) { - lastTailNode = tailNode; - } + completedWork.subtreeFlags |= subtreeFlags; + } else { + // Bubble up the earliest expiration time. + if ((completedWork.mode & ProfileMode) !== NoMode) { + // In profiling mode, resetChildExpirationTime is also used to reset + // profiler durations. + var _treeBaseDuration = completedWork.selfBaseDuration; + var _child2 = completedWork.child; - tailNode = tailNode.sibling; - } // Next we're simply going to delete all insertions after the - // last rendered item. + while (_child2 !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child2.lanes, _child2.childLanes)); // "Static" flags share the lifetime of the fiber/hook they belong to, + // so we should bubble those up even during a bailout. All the other + // flags have a lifetime only of a single render + commit, so we should + // ignore them. - if (lastTailNode === null) { - // All remaining items in the tail are insertions. - renderState.tail = null; - } else { - // Detach the insertion after the last node that was already - // inserted. - lastTailNode.sibling = null; - } + subtreeFlags |= _child2.subtreeFlags & StaticMask; + subtreeFlags |= _child2.flags & StaticMask; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - break; - } + _treeBaseDuration += _child2.treeBaseDuration; + _child2 = _child2.sibling; + } - case "collapsed": { - // Any insertions at the end of the tail list after this point - // should be invisible. If there are already mounted boundaries - // anything before them are not considered for collapsing. - // Therefore we need to go through the whole tail to find if - // there are any. - var _tailNode = renderState.tail; - var _lastTailNode = null; - - while (_tailNode !== null) { - if (_tailNode.alternate !== null) { - _lastTailNode = _tailNode; - } + completedWork.treeBaseDuration = _treeBaseDuration; + } else { + var _child3 = completedWork.child; - _tailNode = _tailNode.sibling; - } // Next we're simply going to delete all insertions after the - // last rendered item. + while (_child3 !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child3.lanes, _child3.childLanes)); // "Static" flags share the lifetime of the fiber/hook they belong to, + // so we should bubble those up even during a bailout. All the other + // flags have a lifetime only of a single render + commit, so we should + // ignore them. - if (_lastTailNode === null) { - // All remaining items in the tail are insertions. - if (!hasRenderedATailFallback && renderState.tail !== null) { - // We suspended during the head. We want to show at least one - // row at the tail. So we'll keep on and cut off the rest. - renderState.tail.sibling = null; - } else { - renderState.tail = null; - } - } else { - // Detach the insertion after the last node that was already - // inserted. - _lastTailNode.sibling = null; - } + subtreeFlags |= _child3.subtreeFlags & StaticMask; + subtreeFlags |= _child3.flags & StaticMask; // Update the return pointer so the tree is consistent. This is a code + // smell because it assumes the commit phase is never concurrent with + // the render phase. Will address during refactor to alternate model. - break; - } + _child3.return = completedWork; + _child3 = _child3.sibling; } } - function bubbleProperties(completedWork) { - var didBailout = - completedWork.alternate !== null && - completedWork.alternate.child === completedWork.child; - var newChildLanes = NoLanes; - var subtreeFlags = NoFlags$1; + completedWork.subtreeFlags |= subtreeFlags; + } - if (!didBailout) { - // Bubble up the earliest expiration time. - if ((completedWork.mode & ProfileMode) !== NoMode) { - // In profiling mode, resetChildExpirationTime is also used to reset - // profiler durations. - var actualDuration = completedWork.actualDuration; - var treeBaseDuration = completedWork.selfBaseDuration; - var child = completedWork.child; + completedWork.childLanes = newChildLanes; + return didBailout; +} - while (child !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(child.lanes, child.childLanes) - ); - subtreeFlags |= child.subtreeFlags; - subtreeFlags |= child.flags; // When a fiber is cloned, its actualDuration is reset to 0. This value will - // only be updated if work is done on the fiber (i.e. it doesn't bailout). - // When work is done, it should bubble to the parent's actualDuration. If - // the fiber has not been cloned though, (meaning no work was done), then - // this value will reflect the amount of time spent working on a previous - // render. In that case it should not bubble. We determine whether it was - // cloned by comparing the child pointer. - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - actualDuration += child.actualDuration; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - treeBaseDuration += child.treeBaseDuration; - child = child.sibling; - } +function completeDehydratedSuspenseBoundary(current, workInProgress, nextState) { + var wasHydrated = popHydrationState(); - completedWork.actualDuration = actualDuration; - completedWork.treeBaseDuration = treeBaseDuration; - } else { - var _child = completedWork.child; + if (nextState !== null && nextState.dehydrated !== null) { + // We might be inside a hydration state the first time we're picking up this + // Suspense boundary, and also after we've reentered it for further hydration. + if (current === null) { + if (!wasHydrated) { + throw new Error('A dehydrated suspense component was completed without a hydrated node. ' + 'This is probably a bug in React.'); + } - while (_child !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child.lanes, _child.childLanes) - ); - subtreeFlags |= _child.subtreeFlags; - subtreeFlags |= _child.flags; // Update the return pointer so the tree is consistent. This is a code - // smell because it assumes the commit phase is never concurrent with - // the render phase. Will address during refactor to alternate model. + prepareToHydrateHostSuspenseInstance(); + bubbleProperties(workInProgress); - _child.return = completedWork; - _child = _child.sibling; - } - } + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + var isTimedOutSuspense = nextState !== null; - completedWork.subtreeFlags |= subtreeFlags; - } else { - // Bubble up the earliest expiration time. - if ((completedWork.mode & ProfileMode) !== NoMode) { - // In profiling mode, resetChildExpirationTime is also used to reset - // profiler durations. - var _treeBaseDuration = completedWork.selfBaseDuration; - var _child2 = completedWork.child; - - while (_child2 !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child2.lanes, _child2.childLanes) - ); // "Static" flags share the lifetime of the fiber/hook they belong to, - // so we should bubble those up even during a bailout. All the other - // flags have a lifetime only of a single render + commit, so we should - // ignore them. - - subtreeFlags |= _child2.subtreeFlags & StaticMask; - subtreeFlags |= _child2.flags & StaticMask; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - _treeBaseDuration += _child2.treeBaseDuration; - _child2 = _child2.sibling; - } + if (isTimedOutSuspense) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var primaryChildFragment = workInProgress.child; - completedWork.treeBaseDuration = _treeBaseDuration; - } else { - var _child3 = completedWork.child; - - while (_child3 !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child3.lanes, _child3.childLanes) - ); // "Static" flags share the lifetime of the fiber/hook they belong to, - // so we should bubble those up even during a bailout. All the other - // flags have a lifetime only of a single render + commit, so we should - // ignore them. - - subtreeFlags |= _child3.subtreeFlags & StaticMask; - subtreeFlags |= _child3.flags & StaticMask; // Update the return pointer so the tree is consistent. This is a code - // smell because it assumes the commit phase is never concurrent with - // the render phase. Will address during refactor to alternate model. - - _child3.return = completedWork; - _child3 = _child3.sibling; + if (primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; + } } } - - completedWork.subtreeFlags |= subtreeFlags; } - completedWork.childLanes = newChildLanes; - return didBailout; - } + return false; + } else { + emitPendingHydrationWarnings(); // We might have reentered this boundary to hydrate it. If so, we need to reset the hydration - function completeDehydratedSuspenseBoundary( - current, - workInProgress, - nextState - ) { - var wasHydrated = popHydrationState(); + if ((workInProgress.flags & DidCapture) === NoFlags$1) { + // This boundary did not suspend so it's now hydrated and unsuspended. + workInProgress.memoizedState = null; + } // If nothing suspended, we need to schedule an effect to mark this boundary + // as having hydrated so events know that they're free to be invoked. + // It's also a signal to replay events and the suspense callback. + // If something suspended, schedule an effect to attach retry listeners. + // So we might as well always mark this. - if (nextState !== null && nextState.dehydrated !== null) { - // We might be inside a hydration state the first time we're picking up this - // Suspense boundary, and also after we've reentered it for further hydration. - if (current === null) { - if (!wasHydrated) { - throw new Error( - "A dehydrated suspense component was completed without a hydrated node. " + - "This is probably a bug in React." - ); - } - prepareToHydrateHostSuspenseInstance(); - bubbleProperties(workInProgress); + workInProgress.flags |= Update; + bubbleProperties(workInProgress); - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - var isTimedOutSuspense = nextState !== null; + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + var _isTimedOutSuspense = nextState !== null; - if (isTimedOutSuspense) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var primaryChildFragment = workInProgress.child; + if (_isTimedOutSuspense) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var _primaryChildFragment = workInProgress.child; - if (primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - primaryChildFragment.treeBaseDuration; - } - } + if (_primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= _primaryChildFragment.treeBaseDuration; } } + } + } - return false; - } else { - emitPendingHydrationWarnings(); // We might have reentered this boundary to hydrate it. If so, we need to reset the hydration - - if ((workInProgress.flags & DidCapture) === NoFlags$1) { - // This boundary did not suspend so it's now hydrated and unsuspended. - workInProgress.memoizedState = null; - } // If nothing suspended, we need to schedule an effect to mark this boundary - // as having hydrated so events know that they're free to be invoked. - // It's also a signal to replay events and the suspense callback. - // If something suspended, schedule an effect to attach retry listeners. - // So we might as well always mark this. - - workInProgress.flags |= Update; - bubbleProperties(workInProgress); + return false; + } + } else { + // Successfully completed this tree. If this was a forced client render, + // there may have been recoverable errors during first hydration + // attempt. If so, add them to a queue so we can log them in the + // commit phase. + upgradeHydrationErrorsToRecoverable(); // Fall through to normal Suspense path - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - var _isTimedOutSuspense = nextState !== null; + return true; + } +} - if (_isTimedOutSuspense) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var _primaryChildFragment = workInProgress.child; +function completeWork(current, workInProgress, renderLanes) { + var newProps = workInProgress.pendingProps; // Note: This intentionally doesn't check if we're hydrating because comparing + + switch (workInProgress.tag) { + case IncompleteFunctionComponent: + + case LazyComponent: + case SimpleMemoComponent: + case FunctionComponent: + case ForwardRef: + case Fragment: + case Mode: + case Profiler: + case ContextConsumer: + case MemoComponent: + bubbleProperties(workInProgress); + return null; - if (_primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - _primaryChildFragment.treeBaseDuration; - } - } - } - } + case ClassComponent: + { + var Component = workInProgress.type; - return false; + if (isContextProvider(Component)) { + popContext(workInProgress); } - } else { - // Successfully completed this tree. If this was a forced client render, - // there may have been recoverable errors during first hydration - // attempt. If so, add them to a queue so we can log them in the - // commit phase. - upgradeHydrationErrorsToRecoverable(); // Fall through to normal Suspense path - return true; + bubbleProperties(workInProgress); + return null; } - } - function completeWork(current, workInProgress, renderLanes) { - var newProps = workInProgress.pendingProps; // Note: This intentionally doesn't check if we're hydrating because comparing + case HostRoot: + { + var fiberRoot = workInProgress.stateNode; - switch (workInProgress.tag) { - case IncompleteFunctionComponent: + { + var previousCache = null; - case LazyComponent: - case SimpleMemoComponent: - case FunctionComponent: - case ForwardRef: - case Fragment: - case Mode: - case Profiler: - case ContextConsumer: - case MemoComponent: - bubbleProperties(workInProgress); - return null; + if (current !== null) { + previousCache = current.memoizedState.cache; + } - case ClassComponent: { - var Component = workInProgress.type; + var cache = workInProgress.memoizedState.cache; - if (isContextProvider(Component)) { - popContext(workInProgress); + if (cache !== previousCache) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; } - bubbleProperties(workInProgress); - return null; + popCacheProvider(workInProgress); + } + popHostContainer(workInProgress); + popTopLevelContextObject(workInProgress); + + if (fiberRoot.pendingContext) { + fiberRoot.context = fiberRoot.pendingContext; + fiberRoot.pendingContext = null; } - case HostRoot: { - var fiberRoot = workInProgress.stateNode; + if (current === null || current.child === null) { + // If we hydrated, pop so that we can delete any remaining children + // that weren't hydrated. + var wasHydrated = popHydrationState(); - { - var previousCache = null; + if (wasHydrated) { + emitPendingHydrationWarnings(); // If we hydrated, then we'll need to schedule an update for + // the commit side-effects on the root. + markUpdate(workInProgress); + } else { if (current !== null) { - previousCache = current.memoizedState.cache; + var prevState = current.memoizedState; + + if ( // Check if this is a client root + !prevState.isDehydrated || // Check if we reverted to client rendering (e.g. due to an error) + (workInProgress.flags & ForceClientRender) !== NoFlags$1) { + // Schedule an effect to clear this container at the start of the + // next commit. This handles the case of React rendering into a + // container with previous children. It's also safe to do for + // updates too, because current.child would only be null if the + // previous render was null (so the container would already + // be empty). + workInProgress.flags |= Snapshot; // If this was a forced client render, there may have been + // recoverable errors during first hydration attempt. If so, add + // them to a queue so we can log them in the commit phase. + + upgradeHydrationErrorsToRecoverable(); + } } + } + } + bubbleProperties(workInProgress); - var cache = workInProgress.memoizedState.cache; + return null; + } - if (cache !== previousCache) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } + case HostHoistable: - popCacheProvider(workInProgress); - } - popHostContainer(workInProgress); - popTopLevelContextObject(workInProgress); + case HostSingleton: - if (fiberRoot.pendingContext) { - fiberRoot.context = fiberRoot.pendingContext; - fiberRoot.pendingContext = null; - } + case HostComponent: + { + popHostContext(workInProgress); + var _type2 = workInProgress.type; - if (current === null || current.child === null) { - // If we hydrated, pop so that we can delete any remaining children - // that weren't hydrated. - var wasHydrated = popHydrationState(); + if (current !== null && workInProgress.stateNode != null) { + updateHostComponent(current, workInProgress, _type2, newProps); + } else { + if (!newProps) { + if (workInProgress.stateNode === null) { + throw new Error('We must have new props for new mounts. This error is likely ' + 'caused by a bug in React. Please file an issue.'); + } // This can happen when we abort work. - if (wasHydrated) { - emitPendingHydrationWarnings(); // If we hydrated, then we'll need to schedule an update for - // the commit side-effects on the root. - markUpdate(workInProgress); - } else { - if (current !== null) { - var prevState = current.memoizedState; - - if ( - // Check if this is a client root - !prevState.isDehydrated || // Check if we reverted to client rendering (e.g. due to an error) - (workInProgress.flags & ForceClientRender) !== NoFlags$1 - ) { - // Schedule an effect to clear this container at the start of the - // next commit. This handles the case of React rendering into a - // container with previous children. It's also safe to do for - // updates too, because current.child would only be null if the - // previous render was null (so the container would already - // be empty). - workInProgress.flags |= Snapshot; // If this was a forced client render, there may have been - // recoverable errors during first hydration attempt. If so, add - // them to a queue so we can log them in the commit phase. - - upgradeHydrationErrorsToRecoverable(); - } - } - } + bubbleProperties(workInProgress); + return null; } - bubbleProperties(workInProgress); - - return null; - } - case HostHoistable: + var _currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context + // "stack" as the parent. Then append children as we go in beginWork + // or completeWork depending on whether we want to add them top->down or + // bottom->up. Top->down is faster in IE11. - case HostSingleton: - case HostComponent: { - popHostContext(workInProgress); - var _type2 = workInProgress.type; + var _wasHydrated2 = popHydrationState(); - if (current !== null && workInProgress.stateNode != null) { - updateHostComponent(current, workInProgress, _type2, newProps); + if (_wasHydrated2) { + // TODO: Move this and createInstance step into the beginPhase + // to consolidate. + prepareToHydrateHostInstance(); } else { - if (!newProps) { - if (workInProgress.stateNode === null) { - throw new Error( - "We must have new props for new mounts. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } // This can happen when we abort work. - - bubbleProperties(workInProgress); - return null; - } + var _rootContainerInstance = getRootHostContainer(); - var _currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context - // "stack" as the parent. Then append children as we go in beginWork - // or completeWork depending on whether we want to add them top->down or - // bottom->up. Top->down is faster in IE11. + var _instance3 = createInstance(_type2, newProps, _rootContainerInstance, _currentHostContext, workInProgress); // TODO: For persistent renderers, we should pass children as part + // of the initial instance creation - var _wasHydrated2 = popHydrationState(); - if (_wasHydrated2) { - // TODO: Move this and createInstance step into the beginPhase - // to consolidate. - prepareToHydrateHostInstance(); - } else { - var _rootContainerInstance = getRootHostContainer(); - - var _instance3 = createInstance( - _type2, - newProps, - _rootContainerInstance, - _currentHostContext, - workInProgress - ); // TODO: For persistent renderers, we should pass children as part - // of the initial instance creation - - appendAllChildren(_instance3, workInProgress); - workInProgress.stateNode = _instance3; // Certain renderers require commit-time effects for initial mount. - } + appendAllChildren(_instance3, workInProgress); + workInProgress.stateNode = _instance3; // Certain renderers require commit-time effects for initial mount. } - - bubbleProperties(workInProgress); // This must come at the very end of the complete phase, because it might - // throw to suspend, and if the resource immediately loads, the work loop - // will resume rendering as if the work-in-progress completed. So it must - // fully complete. - - preloadInstanceAndSuspendIfNeeded(workInProgress); - return null; } - case HostText: { - var newText = newProps; + bubbleProperties(workInProgress); // This must come at the very end of the complete phase, because it might + // throw to suspend, and if the resource immediately loads, the work loop + // will resume rendering as if the work-in-progress completed. So it must + // fully complete. - if (current && workInProgress.stateNode != null) { - var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need - // to schedule a side-effect to do the updates. - - updateHostText(current, workInProgress, oldText, newText); - } else { - if (typeof newText !== "string") { - if (workInProgress.stateNode === null) { - throw new Error( - "We must have new props for new mounts. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } // This can happen when we abort work. - } + preloadInstanceAndSuspendIfNeeded(workInProgress); + return null; + } - getRootHostContainer(); + case HostText: + { + var newText = newProps; - getHostContext(); + if (current && workInProgress.stateNode != null) { + var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need + // to schedule a side-effect to do the updates. - var _wasHydrated3 = popHydrationState(); + updateHostText(current, workInProgress, oldText, newText); + } else { + if (typeof newText !== 'string') { + if (workInProgress.stateNode === null) { + throw new Error('We must have new props for new mounts. This error is likely ' + 'caused by a bug in React. Please file an issue.'); + } // This can happen when we abort work. - if (_wasHydrated3) { - prepareToHydrateHostTextInstance(); - } else { - workInProgress.stateNode = createTextInstance(newText); - } } - bubbleProperties(workInProgress); - return null; - } + getRootHostContainer(); - case SuspenseComponent: { - var nextState = workInProgress.memoizedState; // Special path for dehydrated boundaries. We may eventually move this - // to its own fiber type so that we can add other kinds of hydration - // boundaries that aren't associated with a Suspense tree. In anticipation - // of such a refactor, all the hydration logic is contained in - // this branch. - - if ( - current === null || - (current.memoizedState !== null && - current.memoizedState.dehydrated !== null) - ) { - var fallthroughToNormalSuspensePath = - completeDehydratedSuspenseBoundary( - current, - workInProgress, - nextState - ); - - if (!fallthroughToNormalSuspensePath) { - if (workInProgress.flags & ForceClientRender) { - popSuspenseHandler(workInProgress); // Special case. There were remaining unhydrated nodes. We treat - // this as a mismatch. Revert to client rendering. - - return workInProgress; - } else { - popSuspenseHandler(workInProgress); // Did not finish hydrating, either because this is the initial - // render or because something suspended. + getHostContext(); - return null; - } - } // Continue with the normal Suspense path. + var _wasHydrated3 = popHydrationState(); + + if (_wasHydrated3) { + prepareToHydrateHostTextInstance(); + } else { + workInProgress.stateNode = createTextInstance(newText); } + } - popSuspenseHandler(workInProgress); + bubbleProperties(workInProgress); + return null; + } - if ((workInProgress.flags & DidCapture) !== NoFlags$1) { - // Something suspended. Re-render with the fallback children. - workInProgress.lanes = renderLanes; // Do not reset the effect list. + case SuspenseComponent: + { + var nextState = workInProgress.memoizedState; // Special path for dehydrated boundaries. We may eventually move this + // to its own fiber type so that we can add other kinds of hydration + // boundaries that aren't associated with a Suspense tree. In anticipation + // of such a refactor, all the hydration logic is contained in + // this branch. - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } // Don't bubble properties in this case. + if (current === null || current.memoizedState !== null && current.memoizedState.dehydrated !== null) { + var fallthroughToNormalSuspensePath = completeDehydratedSuspenseBoundary(current, workInProgress, nextState); - return workInProgress; - } + if (!fallthroughToNormalSuspensePath) { + if (workInProgress.flags & ForceClientRender) { + popSuspenseHandler(workInProgress); // Special case. There were remaining unhydrated nodes. We treat + // this as a mismatch. Revert to client rendering. - var nextDidTimeout = nextState !== null; - var prevDidTimeout = - current !== null && current.memoizedState !== null; + return workInProgress; + } else { + popSuspenseHandler(workInProgress); // Did not finish hydrating, either because this is the initial + // render or because something suspended. - if (nextDidTimeout) { - var offscreenFiber = workInProgress.child; - var _previousCache = null; - - if ( - offscreenFiber.alternate !== null && - offscreenFiber.alternate.memoizedState !== null && - offscreenFiber.alternate.memoizedState.cachePool !== null - ) { - _previousCache = - offscreenFiber.alternate.memoizedState.cachePool.pool; + return null; } + } // Continue with the normal Suspense path. - var _cache = null; + } - if ( - offscreenFiber.memoizedState !== null && - offscreenFiber.memoizedState.cachePool !== null - ) { - _cache = offscreenFiber.memoizedState.cachePool.pool; - } + popSuspenseHandler(workInProgress); - if (_cache !== _previousCache) { - // Run passive effects to retain/release the cache. - offscreenFiber.flags |= Passive$1; - } - } // If the suspended state of the boundary changes, we need to schedule - // a passive effect, which is when we process the transitions - - if (nextDidTimeout !== prevDidTimeout) { - // an effect to toggle the subtree's visibility. When we switch from - // fallback -> primary, the inner Offscreen fiber schedules this effect - // as part of its normal complete phase. But when we switch from - // primary -> fallback, the inner Offscreen fiber does not have a complete - // phase. So we need to schedule its effect here. - // - // We also use this flag to connect/disconnect the effects, but the same - // logic applies: when re-connecting, the Offscreen fiber's complete - // phase will handle scheduling the effect. It's only when the fallback - // is active that we have to do anything special. + if ((workInProgress.flags & DidCapture) !== NoFlags$1) { + // Something suspended. Re-render with the fallback children. + workInProgress.lanes = renderLanes; // Do not reset the effect list. - if (nextDidTimeout) { - var _offscreenFiber2 = workInProgress.child; - _offscreenFiber2.flags |= Visibility; - } - } + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); + } // Don't bubble properties in this case. - var retryQueue = workInProgress.updateQueue; - scheduleRetryEffect(workInProgress, retryQueue); - bubbleProperties(workInProgress); + return workInProgress; + } - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - if (nextDidTimeout) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var primaryChildFragment = workInProgress.child; - - if (primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - primaryChildFragment.treeBaseDuration; - } - } - } - } + var nextDidTimeout = nextState !== null; + var prevDidTimeout = current !== null && current.memoizedState !== null; - return null; - } + if (nextDidTimeout) { + var offscreenFiber = workInProgress.child; + var _previousCache = null; - case HostPortal: - popHostContainer(workInProgress); + if (offscreenFiber.alternate !== null && offscreenFiber.alternate.memoizedState !== null && offscreenFiber.alternate.memoizedState.cachePool !== null) { + _previousCache = offscreenFiber.alternate.memoizedState.cachePool.pool; + } - bubbleProperties(workInProgress); - return null; + var _cache = null; - case ContextProvider: - // Pop provider fiber - var context; + if (offscreenFiber.memoizedState !== null && offscreenFiber.memoizedState.cachePool !== null) { + _cache = offscreenFiber.memoizedState.cachePool.pool; + } - { - context = workInProgress.type._context; + if (_cache !== _previousCache) { + // Run passive effects to retain/release the cache. + offscreenFiber.flags |= Passive$1; } + } // If the suspended state of the boundary changes, we need to schedule + // a passive effect, which is when we process the transitions - popProvider(context, workInProgress); - bubbleProperties(workInProgress); - return null; - case IncompleteClassComponent: { - // sequential to ensure this switch is compiled to a jump table. + if (nextDidTimeout !== prevDidTimeout) { + // an effect to toggle the subtree's visibility. When we switch from + // fallback -> primary, the inner Offscreen fiber schedules this effect + // as part of its normal complete phase. But when we switch from + // primary -> fallback, the inner Offscreen fiber does not have a complete + // phase. So we need to schedule its effect here. + // + // We also use this flag to connect/disconnect the effects, but the same + // logic applies: when re-connecting, the Offscreen fiber's complete + // phase will handle scheduling the effect. It's only when the fallback + // is active that we have to do anything special. - var _Component = workInProgress.type; - if (isContextProvider(_Component)) { - popContext(workInProgress); + if (nextDidTimeout) { + var _offscreenFiber2 = workInProgress.child; + _offscreenFiber2.flags |= Visibility; } - - bubbleProperties(workInProgress); - return null; } - case SuspenseListComponent: { - popSuspenseListContext(workInProgress); - var renderState = workInProgress.memoizedState; - - if (renderState === null) { - // We're running in the default, "independent" mode. - // We don't do anything in this mode. - bubbleProperties(workInProgress); - return null; - } + var retryQueue = workInProgress.updateQueue; + scheduleRetryEffect(workInProgress, retryQueue); - var didSuspendAlready = - (workInProgress.flags & DidCapture) !== NoFlags$1; - var renderedTail = renderState.rendering; - - if (renderedTail === null) { - // We just rendered the head. - if (!didSuspendAlready) { - // This is the first pass. We need to figure out if anything is still - // suspended in the rendered set. - // If new content unsuspended, but there's still some content that - // didn't. Then we need to do a second pass that forces everything - // to keep showing their fallbacks. - // We might be suspended if something in this render pass suspended, or - // something in the previous committed pass suspended. Otherwise, - // there's no chance so we can skip the expensive call to - // findFirstSuspended. - var cannotBeSuspended = - renderHasNotSuspendedYet() && - (current === null || - (current.flags & DidCapture) === NoFlags$1); - - if (!cannotBeSuspended) { - var row = workInProgress.child; - - while (row !== null) { - var suspended = findFirstSuspended(row); - - if (suspended !== null) { - didSuspendAlready = true; - workInProgress.flags |= DidCapture; - cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as - // part of the second pass. In that case nothing will subscribe to - // its thenables. Instead, we'll transfer its thenables to the - // SuspenseList so that it can retry if they resolve. - // There might be multiple of these in the list but since we're - // going to wait for all of them anyway, it doesn't really matter - // which ones gets to ping. In theory we could get clever and keep - // track of how many dependencies remain but it gets tricky because - // in the meantime, we can add/remove/change items and dependencies. - // We might bail out of the loop before finding any but that - // doesn't matter since that means that the other boundaries that - // we did find already has their listeners attached. - - var _retryQueue = suspended.updateQueue; - workInProgress.updateQueue = _retryQueue; - scheduleRetryEffect(workInProgress, _retryQueue); // Rerender the whole list, but this time, we'll force fallbacks - // to stay in place. - // Reset the effect flags before doing the second pass since that's now invalid. - // Reset the child fibers to their original state. - - workInProgress.subtreeFlags = NoFlags$1; - resetChildFibers(workInProgress, renderLanes); // Set up the Suspense List Context to force suspense and - // immediately rerender the children. - - pushSuspenseListContext( - workInProgress, - setShallowSuspenseListContext( - suspenseStackCursor.current, - ForceSuspenseFallback - ) - ); // Don't bubble properties in this case. - - return workInProgress.child; - } + bubbleProperties(workInProgress); - row = row.sibling; - } - } + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + if (nextDidTimeout) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var primaryChildFragment = workInProgress.child; - if ( - renderState.tail !== null && - now$1() > getRenderTargetTime() - ) { - // We have already passed our CPU deadline but we still have rows - // left in the tail. We'll just give up further attempts to render - // the main content and only render fallbacks. - workInProgress.flags |= DidCapture; - didSuspendAlready = true; - cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this - // to get it started back up to attempt the next item. While in terms - // of priority this work has the same priority as this current render, - // it's not part of the same transition once the transition has - // committed. If it's sync, we still want to yield so that it can be - // painted. Conceptually, this is really the same as pinging. - // We can use any RetryLane even if it's the one currently rendering - // since we're leaving it behind on this node. - - workInProgress.lanes = SomeRetryLane; - } - } else { - cutOffTailIfNeeded(renderState, false); - } // Next we're going to render the tail. - } else { - // Append the rendered row to the child list. - if (!didSuspendAlready) { - var _suspended = findFirstSuspended(renderedTail); - - if (_suspended !== null) { - workInProgress.flags |= DidCapture; - didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't - // get lost if this row ends up dropped during a second pass. - - var _retryQueue2 = _suspended.updateQueue; - workInProgress.updateQueue = _retryQueue2; - scheduleRetryEffect(workInProgress, _retryQueue2); - cutOffTailIfNeeded(renderState, true); // This might have been modified. - - if ( - renderState.tail === null && - renderState.tailMode === "hidden" && - !renderedTail.alternate && - !getIsHydrating() // We don't cut it if we're hydrating. - ) { - // We're done. - bubbleProperties(workInProgress); - return null; - } - } else if ( - // The time it took to render last row is greater than the remaining - // time we have to render. So rendering one more row would likely - // exceed it. - now$1() * 2 - renderState.renderingStartTime > - getRenderTargetTime() && - renderLanes !== OffscreenLane - ) { - // We have now passed our CPU deadline and we'll just give up further - // attempts to render the main content and only render fallbacks. - // The assumption is that this is usually faster. - workInProgress.flags |= DidCapture; - didSuspendAlready = true; - cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this - // to get it started back up to attempt the next item. While in terms - // of priority this work has the same priority as this current render, - // it's not part of the same transition once the transition has - // committed. If it's sync, we still want to yield so that it can be - // painted. Conceptually, this is really the same as pinging. - // We can use any RetryLane even if it's the one currently rendering - // since we're leaving it behind on this node. - - workInProgress.lanes = SomeRetryLane; + if (primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; } } + } + } - if (renderState.isBackwards) { - // The effect list of the backwards tail will have been added - // to the end. This breaks the guarantee that life-cycles fire in - // sibling order but that isn't a strong guarantee promised by React. - // Especially since these might also just pop in during future commits. - // Append to the beginning of the list. - renderedTail.sibling = workInProgress.child; - workInProgress.child = renderedTail; - } else { - var previousSibling = renderState.last; + return null; + } - if (previousSibling !== null) { - previousSibling.sibling = renderedTail; - } else { - workInProgress.child = renderedTail; - } + case HostPortal: + popHostContainer(workInProgress); - renderState.last = renderedTail; - } - } + bubbleProperties(workInProgress); + return null; - if (renderState.tail !== null) { - // We still have tail rows to render. - // Pop a row. - var next = renderState.tail; - renderState.rendering = next; - renderState.tail = next.sibling; - renderState.renderingStartTime = now$1(); - next.sibling = null; // Restore the context. - // TODO: We can probably just avoid popping it instead and only - // setting it the first time we go from not suspended to suspended. - - var suspenseContext = suspenseStackCursor.current; - - if (didSuspendAlready) { - suspenseContext = setShallowSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - } else { - suspenseContext = - setDefaultShallowSuspenseListContext(suspenseContext); - } + case ContextProvider: + // Pop provider fiber + var context; - pushSuspenseListContext(workInProgress, suspenseContext); // Do a pass over the next row. - // Don't bubble properties in this case. + { + context = workInProgress.type._context; + } - return next; - } + popProvider(context, workInProgress); + bubbleProperties(workInProgress); + return null; - bubbleProperties(workInProgress); - return null; - } + case IncompleteClassComponent: + { + // sequential to ensure this switch is compiled to a jump table. - case ScopeComponent: { - break; + + var _Component = workInProgress.type; + + if (isContextProvider(_Component)) { + popContext(workInProgress); } - case OffscreenComponent: - case LegacyHiddenComponent: { - popSuspenseHandler(workInProgress); - popHiddenContext(workInProgress); - var _nextState = workInProgress.memoizedState; - var nextIsHidden = _nextState !== null; // Schedule a Visibility effect if the visibility has changed + bubbleProperties(workInProgress); + return null; + } - { - if (current !== null) { - var _prevState = current.memoizedState; - var prevIsHidden = _prevState !== null; + case SuspenseListComponent: + { + popSuspenseListContext(workInProgress); + var renderState = workInProgress.memoizedState; - if (prevIsHidden !== nextIsHidden) { - workInProgress.flags |= Visibility; - } - } else { - // On initial mount, we only need a Visibility effect if the tree - // is hidden. - if (nextIsHidden) { - workInProgress.flags |= Visibility; + if (renderState === null) { + // We're running in the default, "independent" mode. + // We don't do anything in this mode. + bubbleProperties(workInProgress); + return null; + } + + var didSuspendAlready = (workInProgress.flags & DidCapture) !== NoFlags$1; + var renderedTail = renderState.rendering; + + if (renderedTail === null) { + // We just rendered the head. + if (!didSuspendAlready) { + // This is the first pass. We need to figure out if anything is still + // suspended in the rendered set. + // If new content unsuspended, but there's still some content that + // didn't. Then we need to do a second pass that forces everything + // to keep showing their fallbacks. + // We might be suspended if something in this render pass suspended, or + // something in the previous committed pass suspended. Otherwise, + // there's no chance so we can skip the expensive call to + // findFirstSuspended. + var cannotBeSuspended = renderHasNotSuspendedYet() && (current === null || (current.flags & DidCapture) === NoFlags$1); + + if (!cannotBeSuspended) { + var row = workInProgress.child; + + while (row !== null) { + var suspended = findFirstSuspended(row); + + if (suspended !== null) { + didSuspendAlready = true; + workInProgress.flags |= DidCapture; + cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as + // part of the second pass. In that case nothing will subscribe to + // its thenables. Instead, we'll transfer its thenables to the + // SuspenseList so that it can retry if they resolve. + // There might be multiple of these in the list but since we're + // going to wait for all of them anyway, it doesn't really matter + // which ones gets to ping. In theory we could get clever and keep + // track of how many dependencies remain but it gets tricky because + // in the meantime, we can add/remove/change items and dependencies. + // We might bail out of the loop before finding any but that + // doesn't matter since that means that the other boundaries that + // we did find already has their listeners attached. + + var _retryQueue = suspended.updateQueue; + workInProgress.updateQueue = _retryQueue; + scheduleRetryEffect(workInProgress, _retryQueue); // Rerender the whole list, but this time, we'll force fallbacks + // to stay in place. + // Reset the effect flags before doing the second pass since that's now invalid. + // Reset the child fibers to their original state. + + workInProgress.subtreeFlags = NoFlags$1; + resetChildFibers(workInProgress, renderLanes); // Set up the Suspense List Context to force suspense and + // immediately rerender the children. + + pushSuspenseListContext(workInProgress, setShallowSuspenseListContext(suspenseStackCursor.current, ForceSuspenseFallback)); // Don't bubble properties in this case. + + return workInProgress.child; + } + + row = row.sibling; } } - } - if ( - !nextIsHidden || - (workInProgress.mode & ConcurrentMode) === NoMode - ) { - bubbleProperties(workInProgress); - } else { - // Don't bubble properties for hidden children unless we're rendering - // at offscreen priority. - if ( - includesSomeLane(renderLanes, OffscreenLane) && // Also don't bubble if the tree suspended - (workInProgress.flags & DidCapture) === NoLanes - ) { - bubbleProperties(workInProgress); // Check if there was an insertion or update in the hidden subtree. - // If so, we need to hide those nodes in the commit phase, so - // schedule a visibility effect. - - if (workInProgress.subtreeFlags & (Placement | Update)) { - workInProgress.flags |= Visibility; - } + if (renderState.tail !== null && now$1() > getRenderTargetTime()) { + // We have already passed our CPU deadline but we still have rows + // left in the tail. We'll just give up further attempts to render + // the main content and only render fallbacks. + workInProgress.flags |= DidCapture; + didSuspendAlready = true; + cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this + // to get it started back up to attempt the next item. While in terms + // of priority this work has the same priority as this current render, + // it's not part of the same transition once the transition has + // committed. If it's sync, we still want to yield so that it can be + // painted. Conceptually, this is really the same as pinging. + // We can use any RetryLane even if it's the one currently rendering + // since we're leaving it behind on this node. + + workInProgress.lanes = SomeRetryLane; } - } + } else { + cutOffTailIfNeeded(renderState, false); + } // Next we're going to render the tail. - var offscreenQueue = workInProgress.updateQueue; + } else { + // Append the rendered row to the child list. + if (!didSuspendAlready) { + var _suspended = findFirstSuspended(renderedTail); - if (offscreenQueue !== null) { - var _retryQueue3 = offscreenQueue.retryQueue; - scheduleRetryEffect(workInProgress, _retryQueue3); - } + if (_suspended !== null) { + workInProgress.flags |= DidCapture; + didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't + // get lost if this row ends up dropped during a second pass. - { - var _previousCache2 = null; - - if ( - current !== null && - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - _previousCache2 = current.memoizedState.cachePool.pool; + var _retryQueue2 = _suspended.updateQueue; + workInProgress.updateQueue = _retryQueue2; + scheduleRetryEffect(workInProgress, _retryQueue2); + cutOffTailIfNeeded(renderState, true); // This might have been modified. + + if (renderState.tail === null && renderState.tailMode === 'hidden' && !renderedTail.alternate && !getIsHydrating() // We don't cut it if we're hydrating. + ) { + // We're done. + bubbleProperties(workInProgress); + return null; + } + } else if ( // The time it took to render last row is greater than the remaining + // time we have to render. So rendering one more row would likely + // exceed it. + now$1() * 2 - renderState.renderingStartTime > getRenderTargetTime() && renderLanes !== OffscreenLane) { + // We have now passed our CPU deadline and we'll just give up further + // attempts to render the main content and only render fallbacks. + // The assumption is that this is usually faster. + workInProgress.flags |= DidCapture; + didSuspendAlready = true; + cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this + // to get it started back up to attempt the next item. While in terms + // of priority this work has the same priority as this current render, + // it's not part of the same transition once the transition has + // committed. If it's sync, we still want to yield so that it can be + // painted. Conceptually, this is really the same as pinging. + // We can use any RetryLane even if it's the one currently rendering + // since we're leaving it behind on this node. + + workInProgress.lanes = SomeRetryLane; } + } - var _cache2 = null; + if (renderState.isBackwards) { + // The effect list of the backwards tail will have been added + // to the end. This breaks the guarantee that life-cycles fire in + // sibling order but that isn't a strong guarantee promised by React. + // Especially since these might also just pop in during future commits. + // Append to the beginning of the list. + renderedTail.sibling = workInProgress.child; + workInProgress.child = renderedTail; + } else { + var previousSibling = renderState.last; - if ( - workInProgress.memoizedState !== null && - workInProgress.memoizedState.cachePool !== null - ) { - _cache2 = workInProgress.memoizedState.cachePool.pool; + if (previousSibling !== null) { + previousSibling.sibling = renderedTail; + } else { + workInProgress.child = renderedTail; } - if (_cache2 !== _previousCache2) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } + renderState.last = renderedTail; } - - popTransition(workInProgress, current); - return null; } - case CacheComponent: { - { - var _previousCache3 = null; - - if (current !== null) { - _previousCache3 = current.memoizedState.cache; - } - - var _cache3 = workInProgress.memoizedState.cache; + if (renderState.tail !== null) { + // We still have tail rows to render. + // Pop a row. + var next = renderState.tail; + renderState.rendering = next; + renderState.tail = next.sibling; + renderState.renderingStartTime = now$1(); + next.sibling = null; // Restore the context. + // TODO: We can probably just avoid popping it instead and only + // setting it the first time we go from not suspended to suspended. - if (_cache3 !== _previousCache3) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } + var suspenseContext = suspenseStackCursor.current; - popCacheProvider(workInProgress); - bubbleProperties(workInProgress); + if (didSuspendAlready) { + suspenseContext = setShallowSuspenseListContext(suspenseContext, ForceSuspenseFallback); + } else { + suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); } - return null; - } + pushSuspenseListContext(workInProgress, suspenseContext); // Do a pass over the next row. + // Don't bubble properties in this case. - case TracingMarkerComponent: { - return null; + return next; } - } - throw new Error( - "Unknown unit of work tag (" + - workInProgress.tag + - "). This error is likely caused by a bug in " + - "React. Please file an issue." - ); - } + bubbleProperties(workInProgress); + return null; + } - function unwindWork(current, workInProgress, renderLanes) { - switch (workInProgress.tag) { - case ClassComponent: { - var Component = workInProgress.type; + case ScopeComponent: + { - if (isContextProvider(Component)) { - popContext(workInProgress); - } + break; + } - var flags = workInProgress.flags; + case OffscreenComponent: + case LegacyHiddenComponent: + { + popSuspenseHandler(workInProgress); + popHiddenContext(workInProgress); + var _nextState = workInProgress.memoizedState; + var nextIsHidden = _nextState !== null; // Schedule a Visibility effect if the visibility has changed - if (flags & ShouldCapture) { - workInProgress.flags = (flags & ~ShouldCapture) | DidCapture; + { + if (current !== null) { + var _prevState = current.memoizedState; + var prevIsHidden = _prevState !== null; - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); + if (prevIsHidden !== nextIsHidden) { + workInProgress.flags |= Visibility; + } + } else { + // On initial mount, we only need a Visibility effect if the tree + // is hidden. + if (nextIsHidden) { + workInProgress.flags |= Visibility; } - - return workInProgress; } - - return null; } - case HostRoot: { - { - popCacheProvider(workInProgress); + if (!nextIsHidden || (workInProgress.mode & ConcurrentMode) === NoMode) { + bubbleProperties(workInProgress); + } else { + // Don't bubble properties for hidden children unless we're rendering + // at offscreen priority. + if (includesSomeLane(renderLanes, OffscreenLane) && // Also don't bubble if the tree suspended + (workInProgress.flags & DidCapture) === NoLanes) { + bubbleProperties(workInProgress); // Check if there was an insertion or update in the hidden subtree. + // If so, we need to hide those nodes in the commit phase, so + // schedule a visibility effect. + + if (workInProgress.subtreeFlags & (Placement | Update)) { + workInProgress.flags |= Visibility; + } } - popHostContainer(workInProgress); - popTopLevelContextObject(workInProgress); - var _flags = workInProgress.flags; - - if ( - (_flags & ShouldCapture) !== NoFlags$1 && - (_flags & DidCapture) === NoFlags$1 - ) { - // There was an error during render that wasn't captured by a suspense - // boundary. Do a second pass on the root to unmount the children. - workInProgress.flags = (_flags & ~ShouldCapture) | DidCapture; - return workInProgress; - } // We unwound to the root without completing it. Exit. - - return null; } - case HostHoistable: - case HostSingleton: - case HostComponent: { - // TODO: popHydrationState - popHostContext(workInProgress); - return null; + var offscreenQueue = workInProgress.updateQueue; + + if (offscreenQueue !== null) { + var _retryQueue3 = offscreenQueue.retryQueue; + scheduleRetryEffect(workInProgress, _retryQueue3); } - case SuspenseComponent: { - popSuspenseHandler(workInProgress); - var suspenseState = workInProgress.memoizedState; + { + var _previousCache2 = null; - if (suspenseState !== null && suspenseState.dehydrated !== null) { - if (workInProgress.alternate === null) { - throw new Error( - "Threw in newly mounted dehydrated component. This is likely a bug in " + - "React. Please file an issue." - ); - } + if (current !== null && current.memoizedState !== null && current.memoizedState.cachePool !== null) { + _previousCache2 = current.memoizedState.cachePool.pool; } - var _flags2 = workInProgress.flags; + var _cache2 = null; - if (_flags2 & ShouldCapture) { - workInProgress.flags = (_flags2 & ~ShouldCapture) | DidCapture; // Captured a suspense effect. Re-render the boundary. - - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } - - return workInProgress; + if (workInProgress.memoizedState !== null && workInProgress.memoizedState.cachePool !== null) { + _cache2 = workInProgress.memoizedState.cachePool.pool; } - return null; + if (_cache2 !== _previousCache2) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; + } } - case SuspenseListComponent: { - popSuspenseListContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been - // caught by a nested boundary. If not, it should bubble through. + popTransition(workInProgress, current); + return null; + } - return null; - } + case CacheComponent: + { + { + var _previousCache3 = null; - case HostPortal: - popHostContainer(workInProgress); - return null; + if (current !== null) { + _previousCache3 = current.memoizedState.cache; + } - case ContextProvider: - var context; + var _cache3 = workInProgress.memoizedState.cache; - { - context = workInProgress.type._context; + if (_cache3 !== _previousCache3) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; } - popProvider(context, workInProgress); - return null; - - case OffscreenComponent: - case LegacyHiddenComponent: { - popSuspenseHandler(workInProgress); - popHiddenContext(workInProgress); - popTransition(workInProgress, current); - var _flags3 = workInProgress.flags; + popCacheProvider(workInProgress); + bubbleProperties(workInProgress); + } - if (_flags3 & ShouldCapture) { - workInProgress.flags = (_flags3 & ~ShouldCapture) | DidCapture; // Captured a suspense effect. Re-render the boundary. + return null; + } - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } + case TracingMarkerComponent: + { - return workInProgress; - } + return null; + } + } - return null; - } + throw new Error("Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + 'React. Please file an issue.'); +} - case CacheComponent: - { - popCacheProvider(workInProgress); - } +function unwindWork(current, workInProgress, renderLanes) { - return null; + switch (workInProgress.tag) { + case ClassComponent: + { + var Component = workInProgress.type; - case TracingMarkerComponent: - return null; + if (isContextProvider(Component)) { + popContext(workInProgress); + } - default: - return null; - } - } + var flags = workInProgress.flags; - function unwindInterruptedWork(current, interruptedWork, renderLanes) { - switch (interruptedWork.tag) { - case ClassComponent: { - var childContextTypes = interruptedWork.type.childContextTypes; + if (flags & ShouldCapture) { + workInProgress.flags = flags & ~ShouldCapture | DidCapture; - if (childContextTypes !== null && childContextTypes !== undefined) { - popContext(interruptedWork); + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - break; + return workInProgress; } - case HostRoot: { - { - popCacheProvider(interruptedWork); - } - popHostContainer(interruptedWork); - popTopLevelContextObject(interruptedWork); - break; - } + return null; + } - case HostHoistable: - case HostSingleton: - case HostComponent: { - popHostContext(interruptedWork); - break; + case HostRoot: + { + + { + popCacheProvider(workInProgress); } + popHostContainer(workInProgress); + popTopLevelContextObject(workInProgress); + var _flags = workInProgress.flags; - case HostPortal: - popHostContainer(interruptedWork); - break; + if ((_flags & ShouldCapture) !== NoFlags$1 && (_flags & DidCapture) === NoFlags$1) { + // There was an error during render that wasn't captured by a suspense + // boundary. Do a second pass on the root to unmount the children. + workInProgress.flags = _flags & ~ShouldCapture | DidCapture; + return workInProgress; + } // We unwound to the root without completing it. Exit. - case SuspenseComponent: - popSuspenseHandler(interruptedWork); - break; - case SuspenseListComponent: - popSuspenseListContext(interruptedWork); - break; + return null; + } + + case HostHoistable: + case HostSingleton: + case HostComponent: + { + // TODO: popHydrationState + popHostContext(workInProgress); + return null; + } - case ContextProvider: - var context; + case SuspenseComponent: + { + popSuspenseHandler(workInProgress); + var suspenseState = workInProgress.memoizedState; - { - context = interruptedWork.type._context; + if (suspenseState !== null && suspenseState.dehydrated !== null) { + if (workInProgress.alternate === null) { + throw new Error('Threw in newly mounted dehydrated component. This is likely a bug in ' + 'React. Please file an issue.'); } + } - popProvider(context, interruptedWork); - break; + var _flags2 = workInProgress.flags; - case OffscreenComponent: - case LegacyHiddenComponent: - popSuspenseHandler(interruptedWork); - popHiddenContext(interruptedWork); - popTransition(interruptedWork, current); - break; + if (_flags2 & ShouldCapture) { + workInProgress.flags = _flags2 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary. - case CacheComponent: - { - popCacheProvider(interruptedWork); + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - break; + return workInProgress; + } + + return null; } - } - var didWarnAboutUndefinedSnapshotBeforeUpdate = null; + case SuspenseListComponent: + { + popSuspenseListContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been + // caught by a nested boundary. If not, it should bubble through. - { - didWarnAboutUndefinedSnapshotBeforeUpdate = new Set(); - } // Used during the commit phase to track the state of the Offscreen component stack. - // Allows us to avoid traversing the return path to find the nearest Offscreen ancestor. - - var offscreenSubtreeIsHidden = false; - var offscreenSubtreeWasHidden = false; // Used to track if a form needs to be reset at the end of the mutation phase. - var PossiblyWeakSet = typeof WeakSet === "function" ? WeakSet : Set; - var nextEffect = null; // Used for Profiling builds to track updaters. - - function shouldProfile(current) { - return ( - (current.mode & ProfileMode) !== NoMode && - (getExecutionContext() & CommitContext) !== NoContext - ); - } - - function callComponentWillUnmountWithTimer(current, instance) { - instance.props = resolveClassComponentProps( - current.type, - current.memoizedProps, - current.elementType === current.type - ); - instance.state = current.memoizedState; - - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - instance.componentWillUnmount(); - } finally { - recordLayoutEffectDuration(current); - } - } else { - instance.componentWillUnmount(); + return null; } - } // Capture errors so they don't interrupt unmounting. - function safelyCallComponentWillUnmount( - current, - nearestMountedAncestor, - instance - ) { - try { - callComponentWillUnmountWithTimer(current, instance); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); - } - } // Capture errors so they don't interrupt mounting. + case HostPortal: + popHostContainer(workInProgress); + return null; - function safelyAttachRef(current, nearestMountedAncestor) { - try { - commitAttachRef(current); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + case ContextProvider: + var context; + + { + context = workInProgress.type._context; } - } - function safelyDetachRef(current, nearestMountedAncestor) { - var ref = current.ref; - var refCleanup = current.refCleanup; + popProvider(context, workInProgress); + return null; - if (ref !== null) { - if (typeof refCleanup === "function") { - try { - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - refCleanup(); - } finally { - recordLayoutEffectDuration(current); - } - } else { - refCleanup(); - } - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); - } finally { - // `refCleanup` has been called. Nullify all references to it to prevent double invocation. - current.refCleanup = null; - var finishedWork = current.alternate; + case OffscreenComponent: + case LegacyHiddenComponent: + { + popSuspenseHandler(workInProgress); + popHiddenContext(workInProgress); + popTransition(workInProgress, current); + var _flags3 = workInProgress.flags; - if (finishedWork != null) { - finishedWork.refCleanup = null; - } - } - } else if (typeof ref === "function") { - var retVal; + if (_flags3 & ShouldCapture) { + workInProgress.flags = _flags3 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary. - try { - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - retVal = ref(null); - } finally { - recordLayoutEffectDuration(current); - } - } else { - retVal = ref(null); - } - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - { - if (typeof retVal === "function") { - error( - "Unexpected return value from a callback ref in %s. " + - "A callback ref should not return a function.", - getComponentNameFromFiber(current) - ); - } - } - } else { - // $FlowFixMe[incompatible-use] unable to narrow type to RefObject - ref.current = null; + return workInProgress; } + + return null; } - } - function safelyCallDestroy(current, nearestMountedAncestor, destroy) { - try { - destroy(); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + case CacheComponent: + { + popCacheProvider(workInProgress); } - } - var shouldFireAfterActiveInstanceBlur = false; - function commitBeforeMutationEffects(root, firstChild) { - nextEffect = firstChild; - commitBeforeMutationEffects_begin(); // We no longer need to track the active instance fiber - var shouldFire = shouldFireAfterActiveInstanceBlur; - shouldFireAfterActiveInstanceBlur = false; - return shouldFire; - } + return null; - function commitBeforeMutationEffects_begin() { - while (nextEffect !== null) { - var fiber = nextEffect; // This phase is only used for beforeActiveInstanceBlur. + case TracingMarkerComponent: - var child = fiber.child; + return null; - if ( - (fiber.subtreeFlags & BeforeMutationMask) !== NoFlags$1 && - child !== null - ) { - child.return = fiber; - nextEffect = child; - } else { - commitBeforeMutationEffects_complete(); - } - } - } + default: + return null; + } +} - function commitBeforeMutationEffects_complete() { - while (nextEffect !== null) { - var fiber = nextEffect; - setCurrentFiber(fiber); +function unwindInterruptedWork(current, interruptedWork, renderLanes) { - try { - commitBeforeMutationEffectsOnFiber(fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); + switch (interruptedWork.tag) { + case ClassComponent: + { + var childContextTypes = interruptedWork.type.childContextTypes; + + if (childContextTypes !== null && childContextTypes !== undefined) { + popContext(interruptedWork); } - resetCurrentFiber(); - var sibling = fiber.sibling; + break; + } - if (sibling !== null) { - sibling.return = fiber.return; - nextEffect = sibling; - return; + case HostRoot: + { + + { + popCacheProvider(interruptedWork); } + popHostContainer(interruptedWork); + popTopLevelContextObject(interruptedWork); + break; + } - nextEffect = fiber.return; + case HostHoistable: + case HostSingleton: + case HostComponent: + { + popHostContext(interruptedWork); + break; } - } - function commitBeforeMutationEffectsOnFiber(finishedWork) { - var current = finishedWork.alternate; - var flags = finishedWork.flags; + case HostPortal: + popHostContainer(interruptedWork); + break; + + case SuspenseComponent: + popSuspenseHandler(interruptedWork); + break; + + case SuspenseListComponent: + popSuspenseListContext(interruptedWork); + break; - if ((flags & Snapshot) !== NoFlags$1) { - setCurrentFiber(finishedWork); + case ContextProvider: + var context; + + { + context = interruptedWork.type._context; } - switch (finishedWork.tag) { - case FunctionComponent: { - break; - } + popProvider(context, interruptedWork); + break; - case ForwardRef: - case SimpleMemoComponent: { - break; - } + case OffscreenComponent: + case LegacyHiddenComponent: + popSuspenseHandler(interruptedWork); + popHiddenContext(interruptedWork); + popTransition(interruptedWork, current); + break; - case ClassComponent: { - if ((flags & Snapshot) !== NoFlags$1) { - if (current !== null) { - var prevProps = current.memoizedProps; - var prevState = current.memoizedState; - var instance = finishedWork.stateNode; // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. + case CacheComponent: + { + popCacheProvider(interruptedWork); + } - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "getSnapshotBeforeUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } + break; + } +} - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "getSnapshotBeforeUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } - } - } +var didWarnAboutUndefinedSnapshotBeforeUpdate = null; - var snapshot = instance.getSnapshotBeforeUpdate( - resolveClassComponentProps( - finishedWork.type, - prevProps, - finishedWork.elementType === finishedWork.type - ), - prevState - ); +{ + didWarnAboutUndefinedSnapshotBeforeUpdate = new Set(); +} // Used during the commit phase to track the state of the Offscreen component stack. +// Allows us to avoid traversing the return path to find the nearest Offscreen ancestor. - { - var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate; - - if ( - snapshot === undefined && - !didWarnSet.has(finishedWork.type) - ) { - didWarnSet.add(finishedWork.type); - - error( - "%s.getSnapshotBeforeUpdate(): A snapshot value (or null) " + - "must be returned. You have returned undefined.", - getComponentNameFromFiber(finishedWork) - ); - } - } - instance.__reactInternalSnapshotBeforeUpdate = snapshot; - } - } +var offscreenSubtreeIsHidden = false; +var offscreenSubtreeWasHidden = false; // Used to track if a form needs to be reset at the end of the mutation phase. +var PossiblyWeakSet = typeof WeakSet === 'function' ? WeakSet : Set; +var nextEffect = null; // Used for Profiling builds to track updaters. - break; - } +function shouldProfile(current) { + return (current.mode & ProfileMode) !== NoMode && (getExecutionContext() & CommitContext) !== NoContext; +} - case HostRoot: { - if ((flags & Snapshot) !== NoFlags$1) { - { - var root = finishedWork.stateNode; - clearContainer(root.containerInfo); - } - } +function callComponentWillUnmountWithTimer(current, instance) { + instance.props = resolveClassComponentProps(current.type, current.memoizedProps, current.elementType === current.type); + instance.state = current.memoizedState; + + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + instance.componentWillUnmount(); + } finally { + recordLayoutEffectDuration(current); + } + } else { + instance.componentWillUnmount(); + } +} // Capture errors so they don't interrupt unmounting. + + +function safelyCallComponentWillUnmount(current, nearestMountedAncestor, instance) { + try { + callComponentWillUnmountWithTimer(current, instance); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} // Capture errors so they don't interrupt mounting. + + +function safelyAttachRef(current, nearestMountedAncestor) { + try { + commitAttachRef(current); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} - break; +function safelyDetachRef(current, nearestMountedAncestor) { + var ref = current.ref; + var refCleanup = current.refCleanup; + + if (ref !== null) { + if (typeof refCleanup === 'function') { + try { + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + refCleanup(); + } finally { + recordLayoutEffectDuration(current); + } + } else { + refCleanup(); } + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } finally { + // `refCleanup` has been called. Nullify all references to it to prevent double invocation. + current.refCleanup = null; + var finishedWork = current.alternate; - case HostComponent: - case HostHoistable: - case HostSingleton: - case HostText: - case HostPortal: - case IncompleteClassComponent: - // Nothing to do for these component types - break; + if (finishedWork != null) { + finishedWork.refCleanup = null; + } + } + } else if (typeof ref === 'function') { + var retVal; - default: { - if ((flags & Snapshot) !== NoFlags$1) { - throw new Error( - "This unit of work tag should not have side-effects. This error is " + - "likely caused by a bug in React. Please file an issue." - ); + try { + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + retVal = ref(null); + } finally { + recordLayoutEffectDuration(current); } + } else { + retVal = ref(null); } + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); } - if ((flags & Snapshot) !== NoFlags$1) { - resetCurrentFiber(); + { + if (typeof retVal === 'function') { + error('Unexpected return value from a callback ref in %s. ' + 'A callback ref should not return a function.', getComponentNameFromFiber(current)); + } } + } else { + // $FlowFixMe[incompatible-use] unable to narrow type to RefObject + ref.current = null; } + } +} - function commitHookEffectListUnmount( - flags, - finishedWork, - nearestMountedAncestor - ) { - var updateQueue = finishedWork.updateQueue; - var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; - - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; - - do { - if ((effect.tag & flags) === flags) { - // Unmount - var inst = effect.inst; - var destroy = inst.destroy; - - if (destroy !== undefined) { - inst.destroy = undefined; - - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectUnmountStarted(finishedWork); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectUnmountStarted(finishedWork); - } - } +function safelyCallDestroy(current, nearestMountedAncestor, destroy) { + try { + destroy(); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} +var shouldFireAfterActiveInstanceBlur = false; +function commitBeforeMutationEffects(root, firstChild) { + nextEffect = firstChild; + commitBeforeMutationEffects_begin(); // We no longer need to track the active instance fiber + + var shouldFire = shouldFireAfterActiveInstanceBlur; + shouldFireAfterActiveInstanceBlur = false; + return shouldFire; +} - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(true); - } - } +function commitBeforeMutationEffects_begin() { + while (nextEffect !== null) { + var fiber = nextEffect; // This phase is only used for beforeActiveInstanceBlur. - safelyCallDestroy(finishedWork, nearestMountedAncestor, destroy); + var child = fiber.child; - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(false); - } - } + if ((fiber.subtreeFlags & BeforeMutationMask) !== NoFlags$1 && child !== null) { + child.return = fiber; + nextEffect = child; + } else { + commitBeforeMutationEffects_complete(); + } + } +} - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectUnmountStopped(); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectUnmountStopped(); - } - } - } - } +function commitBeforeMutationEffects_complete() { + while (nextEffect !== null) { + var fiber = nextEffect; + setCurrentFiber(fiber); - effect = effect.next; - } while (effect !== firstEffect); - } + try { + commitBeforeMutationEffectsOnFiber(fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); } - function commitHookEffectListMount(flags, finishedWork) { - var updateQueue = finishedWork.updateQueue; - var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; + resetCurrentFiber(); + var sibling = fiber.sibling; - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; + if (sibling !== null) { + sibling.return = fiber.return; + nextEffect = sibling; + return; + } - do { - if ((effect.tag & flags) === flags) { - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectMountStarted(finishedWork); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectMountStarted(finishedWork); - } - } // Mount + nextEffect = fiber.return; + } +} - var create = effect.create; +function commitBeforeMutationEffectsOnFiber(finishedWork) { + var current = finishedWork.alternate; + var flags = finishedWork.flags; - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(true); - } - } + if ((flags & Snapshot) !== NoFlags$1) { + setCurrentFiber(finishedWork); + } - var inst = effect.inst; - var destroy = create(); - inst.destroy = destroy; + switch (finishedWork.tag) { + case FunctionComponent: + { - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(false); - } - } + break; + } - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectMountStopped(); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectMountStopped(); - } - } + case ForwardRef: + case SimpleMemoComponent: + { + break; + } - { - if (destroy !== undefined && typeof destroy !== "function") { - var hookName = void 0; + case ClassComponent: + { + if ((flags & Snapshot) !== NoFlags$1) { + if (current !== null) { + var prevProps = current.memoizedProps; + var prevState = current.memoizedState; + var instance = finishedWork.stateNode; // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. - if ((effect.tag & Layout) !== NoFlags$1) { - hookName = "useLayoutEffect"; - } else if ((effect.tag & Insertion) !== NoFlags$1) { - hookName = "useInsertionEffect"; - } else { - hookName = "useEffect"; + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - var addendum = void 0; - - if (destroy === null) { - addendum = - " You returned null. If your effect does not require clean " + - "up, return undefined (or nothing)."; - } else if (typeof destroy.then === "function") { - addendum = - "\n\nIt looks like you wrote " + - hookName + - "(async () => ...) or returned a Promise. " + - "Instead, write the async function inside your effect " + - "and call it immediately:\n\n" + - hookName + - "(() => {\n" + - " async function fetchData() {\n" + - " // You can await here\n" + - " const response = await MyAPI.getData(someId);\n" + - " // ...\n" + - " }\n" + - " fetchData();\n" + - "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + - "Learn more about data fetching with Hooks: https://react.dev/link/hooks-data-fetching"; - } else { - addendum = " You returned: " + destroy; + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - - error( - "%s must not return anything besides a function, " + - "which is used for clean-up.%s", - hookName, - addendum - ); } } - } - effect = effect.next; - } while (effect !== firstEffect); - } - } + var snapshot = instance.getSnapshotBeforeUpdate(resolveClassComponentProps(finishedWork.type, prevProps, finishedWork.elementType === finishedWork.type), prevState); - function commitPassiveEffectDurations(finishedRoot, finishedWork) { - if (getExecutionContext() & CommitContext) { - // Only Profilers with work in their subtree will have an Update effect scheduled. - if ((finishedWork.flags & Update) !== NoFlags$1) { - switch (finishedWork.tag) { - case Profiler: { - var passiveEffectDuration = - finishedWork.stateNode.passiveEffectDuration; - var _finishedWork$memoize = finishedWork.memoizedProps, - id = _finishedWork$memoize.id, - onPostCommit = _finishedWork$memoize.onPostCommit; // This value will still reflect the previous commit phase. - // It does not get reset until the start of the next commit phase. + { + var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate; - var commitTime = getCommitTime(); - var phase = finishedWork.alternate === null ? "mount" : "update"; + if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) { + didWarnSet.add(finishedWork.type); - { - if (isCurrentUpdateNested()) { - phase = "nested-update"; - } + error('%s.getSnapshotBeforeUpdate(): A snapshot value (or null) ' + 'must be returned. You have returned undefined.', getComponentNameFromFiber(finishedWork)); } + } - if (typeof onPostCommit === "function") { - onPostCommit(id, phase, passiveEffectDuration, commitTime); - } // Bubble times to the next nearest ancestor Profiler. - // After we process that Profiler, we'll bubble further up. - - var parentFiber = finishedWork.return; - - outer: while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; - root.passiveEffectDuration += passiveEffectDuration; - break outer; - - case Profiler: - var parentStateNode = parentFiber.stateNode; - parentStateNode.passiveEffectDuration += - passiveEffectDuration; - break outer; - } + instance.__reactInternalSnapshotBeforeUpdate = snapshot; + } + } - parentFiber = parentFiber.return; - } + break; + } - break; - } + case HostRoot: + { + if ((flags & Snapshot) !== NoFlags$1) { + { + var root = finishedWork.stateNode; + clearContainer(root.containerInfo); } } + + break; } - } - function commitHookLayoutEffects(finishedWork, hookFlags) { - // At this point layout effects have already been destroyed (during mutation phase). - // This is done to prevent sibling component effects from interfering with each other, - // e.g. a destroy function in one component should never override a ref set - // by a create function in another component during the same commit. - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + case HostComponent: + case HostHoistable: + case HostSingleton: + case HostText: + case HostPortal: + case IncompleteClassComponent: + // Nothing to do for these component types + break; - recordLayoutEffectDuration(finishedWork); - } else { - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + default: + { + if ((flags & Snapshot) !== NoFlags$1) { + throw new Error('This unit of work tag should not have side-effects. This error is ' + 'likely caused by a bug in React. Please file an issue.'); } } - } + } - function commitClassLayoutLifecycles(finishedWork, current) { - var instance = finishedWork.stateNode; + if ((flags & Snapshot) !== NoFlags$1) { + resetCurrentFiber(); + } +} - if (current === null) { - // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "componentDidMount. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } +function commitHookEffectListUnmount(flags, finishedWork, nearestMountedAncestor) { + var updateQueue = finishedWork.updateQueue; + var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; + + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; + + do { + if ((effect.tag & flags) === flags) { + // Unmount + var inst = effect.inst; + var destroy = inst.destroy; + + if (destroy !== undefined) { + inst.destroy = undefined; - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "componentDidMount. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectUnmountStarted(finishedWork); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectUnmountStarted(finishedWork); } } - } - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(true); + } } - recordLayoutEffectDuration(finishedWork); - } else { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } - } else { - var prevProps = resolveClassComponentProps( - finishedWork.type, - current.memoizedProps, - finishedWork.elementType === finishedWork.type - ); - var prevState = current.memoizedState; // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. + safelyCallDestroy(finishedWork, nearestMountedAncestor, destroy); - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "componentDidUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(false); } + } - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "componentDidUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectUnmountStopped(); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectUnmountStopped(); } } } + } - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - instance.componentDidUpdate( - prevProps, - prevState, - instance.__reactInternalSnapshotBeforeUpdate - ); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + effect = effect.next; + } while (effect !== firstEffect); + } +} + +function commitHookEffectListMount(flags, finishedWork) { + var updateQueue = finishedWork.updateQueue; + var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; + + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; + + do { + if ((effect.tag & flags) === flags) { + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectMountStarted(finishedWork); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectMountStarted(finishedWork); } + } // Mount - recordLayoutEffectDuration(finishedWork); - } else { - try { - instance.componentDidUpdate( - prevProps, - prevState, - instance.__reactInternalSnapshotBeforeUpdate - ); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + + var create = effect.create; + + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(true); } } - } - } - function commitClassCallbacks(finishedWork) { - // TODO: I think this is now always non-null by the time it reaches the - // commit phase. Consider removing the type check. - var updateQueue = finishedWork.updateQueue; + var inst = effect.inst; + var destroy = create(); + inst.destroy = destroy; - if (updateQueue !== null) { - var instance = finishedWork.stateNode; + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(false); + } + } + + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectMountStopped(); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectMountStopped(); + } + } { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "processing the update queue. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + if (destroy !== undefined && typeof destroy !== 'function') { + var hookName = void 0; + + if ((effect.tag & Layout) !== NoFlags$1) { + hookName = 'useLayoutEffect'; + } else if ((effect.tag & Insertion) !== NoFlags$1) { + hookName = 'useInsertionEffect'; + } else { + hookName = 'useEffect'; } - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "processing the update queue. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + var addendum = void 0; + + if (destroy === null) { + addendum = ' You returned null. If your effect does not require clean ' + 'up, return undefined (or nothing).'; + } else if (typeof destroy.then === 'function') { + addendum = '\n\nIt looks like you wrote ' + hookName + '(async () => ...) or returned a Promise. ' + 'Instead, write the async function inside your effect ' + 'and call it immediately:\n\n' + hookName + '(() => {\n' + ' async function fetchData() {\n' + ' // You can await here\n' + ' const response = await MyAPI.getData(someId);\n' + ' // ...\n' + ' }\n' + ' fetchData();\n' + "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + 'Learn more about data fetching with Hooks: https://react.dev/link/hooks-data-fetching'; + } else { + addendum = ' You returned: ' + destroy; } - } - } // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. - try { - commitCallbacks(updateQueue, instance); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + error('%s must not return anything besides a function, ' + 'which is used for clean-up.%s', hookName, addendum); + } } } - } - function commitHostComponentMount(finishedWork) { - var type = finishedWork.type; - var props = finishedWork.memoizedProps; - var instance = finishedWork.stateNode; + effect = effect.next; + } while (effect !== firstEffect); + } +} - try { - commitMount(instance, type, props, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } +function commitPassiveEffectDurations(finishedRoot, finishedWork) { + if (getExecutionContext() & CommitContext) { + // Only Profilers with work in their subtree will have an Update effect scheduled. + if ((finishedWork.flags & Update) !== NoFlags$1) { + switch (finishedWork.tag) { + case Profiler: + { + var passiveEffectDuration = finishedWork.stateNode.passiveEffectDuration; + var _finishedWork$memoize = finishedWork.memoizedProps, + id = _finishedWork$memoize.id, + onPostCommit = _finishedWork$memoize.onPostCommit; // This value will still reflect the previous commit phase. + // It does not get reset until the start of the next commit phase. - function commitProfilerUpdate(finishedWork, current) { - if (getExecutionContext() & CommitContext) { - try { - var _finishedWork$memoize2 = finishedWork.memoizedProps, - onCommit = _finishedWork$memoize2.onCommit, - onRender = _finishedWork$memoize2.onRender; - var effectDuration = finishedWork.stateNode.effectDuration; - var commitTime = getCommitTime(); - var phase = current === null ? "mount" : "update"; - - if (enableProfilerNestedUpdatePhase) { - if (isCurrentUpdateNested()) { - phase = "nested-update"; + var commitTime = getCommitTime(); + var phase = finishedWork.alternate === null ? 'mount' : 'update'; + + { + if (isCurrentUpdateNested()) { + phase = 'nested-update'; + } } - } - if (typeof onRender === "function") { - onRender( - finishedWork.memoizedProps.id, - phase, - finishedWork.actualDuration, - finishedWork.treeBaseDuration, - finishedWork.actualStartTime, - commitTime - ); - } + if (typeof onPostCommit === 'function') { + onPostCommit(id, phase, passiveEffectDuration, commitTime); + } // Bubble times to the next nearest ancestor Profiler. + // After we process that Profiler, we'll bubble further up. - if (enableProfilerCommitHooks) { - if (typeof onCommit === "function") { - onCommit( - finishedWork.memoizedProps.id, - phase, - effectDuration, - commitTime - ); - } // Schedule a passive effect for this Profiler to call onPostCommit hooks. - // This effect should be scheduled even if there is no onPostCommit callback for this Profiler, - // because the effect is also where times bubble to parent Profilers. - - enqueuePendingPassiveProfilerEffect(finishedWork); // Propagate layout effect durations to the next nearest Profiler ancestor. - // Do not reset these values until the next render so DevTools has a chance to read them first. var parentFiber = finishedWork.return; @@ -19618,4331 +16512,4042 @@ if (__DEV__) { switch (parentFiber.tag) { case HostRoot: var root = parentFiber.stateNode; - root.effectDuration += effectDuration; + root.passiveEffectDuration += passiveEffectDuration; break outer; case Profiler: var parentStateNode = parentFiber.stateNode; - parentStateNode.effectDuration += effectDuration; + parentStateNode.passiveEffectDuration += passiveEffectDuration; break outer; } parentFiber = parentFiber.return; } + + break; } - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } + } +} + +function commitHookLayoutEffects(finishedWork, hookFlags) { + // At this point layout effects have already been destroyed (during mutation phase). + // This is done to prevent sibling component effects from interfering with each other, + // e.g. a destroy function in one component should never override a ref set + // by a create function in another component during the same commit. + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + + recordLayoutEffectDuration(finishedWork); + } else { + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} + +function commitClassLayoutLifecycles(finishedWork, current) { + var instance = finishedWork.stateNode; + + if (current === null) { + // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } + + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } } } - function commitLayoutEffectOnFiber( - finishedRoot, - current, - finishedWork, - committedLanes - ) { - // When updating this function, also update reappearLayoutEffects, which does - // most of the same things when an offscreen tree goes from hidden -> visible. - var flags = finishedWork.flags; + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + recordLayoutEffectDuration(finishedWork); + } else { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } + } else { + var prevProps = resolveClassComponentProps(finishedWork.type, current.memoizedProps, finishedWork.elementType === finishedWork.type); + var prevState = current.memoizedState; // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. - if (flags & Update) { - commitHookLayoutEffects(finishedWork, Layout | HasEffect); - } + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } - break; + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } + } + } - case ClassComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - if (flags & Update) { - commitClassLayoutLifecycles(finishedWork, current); - } + recordLayoutEffectDuration(finishedWork); + } else { + try { + instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } + } +} - if (flags & Callback) { - commitClassCallbacks(finishedWork); - } +function commitClassCallbacks(finishedWork) { + // TODO: I think this is now always non-null by the time it reaches the + // commit phase. Consider removing the type check. + var updateQueue = finishedWork.updateQueue; - if (flags & Ref) { - safelyAttachRef(finishedWork, finishedWork.return); - } + if (updateQueue !== null) { + var instance = finishedWork.stateNode; - break; + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - case HostRoot: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } + } + } // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. - if (flags & Callback) { - // TODO: I think this is now always non-null by the time it reaches the - // commit phase. Consider removing the type check. - var updateQueue = finishedWork.updateQueue; - if (updateQueue !== null) { - var instance = null; + try { + commitCallbacks(updateQueue, instance); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - if (finishedWork.child !== null) { - switch (finishedWork.child.tag) { - case HostSingleton: - case HostComponent: - instance = getPublicInstance(finishedWork.child.stateNode); - break; +function commitHostComponentMount(finishedWork) { + var type = finishedWork.type; + var props = finishedWork.memoizedProps; + var instance = finishedWork.stateNode; - case ClassComponent: - instance = finishedWork.child.stateNode; - break; - } - } + try { + commitMount(instance, type, props, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } +} - try { - commitCallbacks(updateQueue, instance); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } +function commitProfilerUpdate(finishedWork, current) { + if (getExecutionContext() & CommitContext) { + try { + var _finishedWork$memoize2 = finishedWork.memoizedProps, + onCommit = _finishedWork$memoize2.onCommit, + onRender = _finishedWork$memoize2.onRender; + var effectDuration = finishedWork.stateNode.effectDuration; + var commitTime = getCommitTime(); + var phase = current === null ? 'mount' : 'update'; - break; + if (enableProfilerNestedUpdatePhase) { + if (isCurrentUpdateNested()) { + phase = 'nested-update'; } + } - case HostHoistable: + if (typeof onRender === 'function') { + onRender(finishedWork.memoizedProps.id, phase, finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, commitTime); + } - case HostSingleton: - case HostComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // Renderers may schedule work to be done after host components are mounted - // (eg DOM renderer may schedule auto-focus for inputs and form controls). - // These effects should only be committed when components are first mounted, - // aka when there is no current/alternate. - - if (current === null && flags & Update) { - commitHostComponentMount(finishedWork); - } + if (enableProfilerCommitHooks) { + if (typeof onCommit === 'function') { + onCommit(finishedWork.memoizedProps.id, phase, effectDuration, commitTime); + } // Schedule a passive effect for this Profiler to call onPostCommit hooks. + // This effect should be scheduled even if there is no onPostCommit callback for this Profiler, + // because the effect is also where times bubble to parent Profilers. - if (flags & Ref) { - safelyAttachRef(finishedWork, finishedWork.return); + + enqueuePendingPassiveProfilerEffect(finishedWork); // Propagate layout effect durations to the next nearest Profiler ancestor. + // Do not reset these values until the next render so DevTools has a chance to read them first. + + var parentFiber = finishedWork.return; + + outer: while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + root.effectDuration += effectDuration; + break outer; + + case Profiler: + var parentStateNode = parentFiber.stateNode; + parentStateNode.effectDuration += effectDuration; + break outer; } - break; + parentFiber = parentFiber.return; } + } + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - case Profiler: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // TODO: Should this fire inside an offscreen tree? Or should it wait to - // fire when the tree becomes visible again. +function commitLayoutEffectOnFiber(finishedRoot, current, finishedWork, committedLanes) { + // When updating this function, also update reappearLayoutEffects, which does + // most of the same things when an offscreen tree goes from hidden -> visible. + var flags = finishedWork.flags; - if (flags & Update) { - commitProfilerUpdate(finishedWork, current); - } + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - break; + if (flags & Update) { + commitHookLayoutEffects(finishedWork, Layout | HasEffect); } - case SuspenseComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + break; + } - break; + case ClassComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + + if (flags & Update) { + commitClassLayoutLifecycles(finishedWork, current); + } + + if (flags & Callback) { + commitClassCallbacks(finishedWork); + } + + if (flags & Ref) { + safelyAttachRef(finishedWork, finishedWork.return); } - case OffscreenComponent: { - var isModernRoot = (finishedWork.mode & ConcurrentMode) !== NoMode; - - if (isModernRoot) { - var isHidden = finishedWork.memoizedState !== null; - var newOffscreenSubtreeIsHidden = - isHidden || offscreenSubtreeIsHidden; - - if (newOffscreenSubtreeIsHidden); - else { - // The Offscreen tree is visible. - var wasHidden = - current !== null && current.memoizedState !== null; - var newOffscreenSubtreeWasHidden = - wasHidden || offscreenSubtreeWasHidden; - var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = newOffscreenSubtreeIsHidden; - offscreenSubtreeWasHidden = newOffscreenSubtreeWasHidden; - - if (offscreenSubtreeWasHidden && !prevOffscreenSubtreeWasHidden) { - // This is the root of a reappearing boundary. As we continue - // traversing the layout effects, we must also re-mount layout - // effects that were unmounted when the Offscreen subtree was - // hidden. So this is a superset of the normal commitLayoutEffects. - var includeWorkInProgressEffects = - (finishedWork.subtreeFlags & LayoutMask) !== NoFlags$1; - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - } else { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + break; + } + + case HostRoot: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + + if (flags & Callback) { + // TODO: I think this is now always non-null by the time it reaches the + // commit phase. Consider removing the type check. + var updateQueue = finishedWork.updateQueue; + + if (updateQueue !== null) { + var instance = null; + + if (finishedWork.child !== null) { + switch (finishedWork.child.tag) { + case HostSingleton: + case HostComponent: + instance = getPublicInstance(finishedWork.child.stateNode); + break; + + case ClassComponent: + instance = finishedWork.child.stateNode; + break; } + } - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + try { + commitCallbacks(updateQueue, instance); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } - } else { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); } + } - if (flags & Ref) { - var props = finishedWork.memoizedProps; + break; + } - if (props.mode === "manual") { - safelyAttachRef(finishedWork, finishedWork.return); - } else { - safelyDetachRef(finishedWork, finishedWork.return); - } - } + case HostHoistable: - break; + case HostSingleton: + case HostComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // Renderers may schedule work to be done after host components are mounted + // (eg DOM renderer may schedule auto-focus for inputs and form controls). + // These effects should only be committed when components are first mounted, + // aka when there is no current/alternate. + + if (current === null && flags & Update) { + commitHostComponentMount(finishedWork); } - default: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - break; + if (flags & Ref) { + safelyAttachRef(finishedWork, finishedWork.return); } - } - } - function hideOrUnhideAllChildren(finishedWork, isHidden) { - // Only hide or unhide the top-most host nodes. - var hostSubtreeRoot = null; + break; + } + case Profiler: { - // We only have the top Fiber that was inserted but we need to recurse down its - // children to find all the terminal nodes. - var node = finishedWork; + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // TODO: Should this fire inside an offscreen tree? Or should it wait to + // fire when the tree becomes visible again. - while (true) { - if (node.tag === HostComponent || false || false) { - if (hostSubtreeRoot === null) { - hostSubtreeRoot = node; + if (flags & Update) { + commitProfilerUpdate(finishedWork, current); + } - try { - var instance = node.stateNode; + break; + } - if (isHidden) { - hideInstance(instance); - } else { - unhideInstance(node.stateNode, node.memoizedProps); - } - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } else if (node.tag === HostText) { - if (hostSubtreeRoot === null) { - try { - var _instance = node.stateNode; + case SuspenseComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - if (isHidden) { - hideTextInstance(_instance); - } else { - unhideTextInstance(_instance, node.memoizedProps); - } - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } else if ( - (node.tag === OffscreenComponent || - node.tag === LegacyHiddenComponent) && - node.memoizedState !== null && - node !== finishedWork - ); - else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + break; + } - if (node === finishedWork) { - return; - } + case OffscreenComponent: + { + var isModernRoot = (finishedWork.mode & ConcurrentMode) !== NoMode; - while (node.sibling === null) { - if (node.return === null || node.return === finishedWork) { - return; - } + if (isModernRoot) { + var isHidden = finishedWork.memoizedState !== null; + var newOffscreenSubtreeIsHidden = isHidden || offscreenSubtreeIsHidden; - if (hostSubtreeRoot === node) { - hostSubtreeRoot = null; + if (newOffscreenSubtreeIsHidden) ; else { + // The Offscreen tree is visible. + var wasHidden = current !== null && current.memoizedState !== null; + var newOffscreenSubtreeWasHidden = wasHidden || offscreenSubtreeWasHidden; + var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = newOffscreenSubtreeIsHidden; + offscreenSubtreeWasHidden = newOffscreenSubtreeWasHidden; + + if (offscreenSubtreeWasHidden && !prevOffscreenSubtreeWasHidden) { + // This is the root of a reappearing boundary. As we continue + // traversing the layout effects, we must also re-mount layout + // effects that were unmounted when the Offscreen subtree was + // hidden. So this is a superset of the normal commitLayoutEffects. + var includeWorkInProgressEffects = (finishedWork.subtreeFlags & LayoutMask) !== NoFlags$1; + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + } else { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); } - node = node.return; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; } + } else { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + } - if (hostSubtreeRoot === node) { - hostSubtreeRoot = null; - } + if (flags & Ref) { + var props = finishedWork.memoizedProps; - node.sibling.return = node.return; - node = node.sibling; + if (props.mode === 'manual') { + safelyAttachRef(finishedWork, finishedWork.return); + } else { + safelyDetachRef(finishedWork, finishedWork.return); + } } + + break; } - } - function commitAttachRef(finishedWork) { - var ref = finishedWork.ref; + default: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + break; + } + } +} + +function hideOrUnhideAllChildren(finishedWork, isHidden) { + // Only hide or unhide the top-most host nodes. + var hostSubtreeRoot = null; - if (ref !== null) { - var instance = finishedWork.stateNode; - var instanceToUse; + { + // We only have the top Fiber that was inserted but we need to recurse down its + // children to find all the terminal nodes. + var node = finishedWork; - switch (finishedWork.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - instanceToUse = getPublicInstance(instance); - break; + while (true) { + if (node.tag === HostComponent || (false) || (false)) { + if (hostSubtreeRoot === null) { + hostSubtreeRoot = node; - default: - instanceToUse = instance; - } // Moved outside to ensure DCE works with this flag + try { + var instance = node.stateNode; - if (typeof ref === "function") { - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - finishedWork.refCleanup = ref(instanceToUse); - } finally { - recordLayoutEffectDuration(finishedWork); + if (isHidden) { + hideInstance(instance); + } else { + unhideInstance(node.stateNode, node.memoizedProps); } - } else { - finishedWork.refCleanup = ref(instanceToUse); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } - } else { - { - // TODO: We should move these warnings to happen during the render - // phase (markRef). - if (!ref.hasOwnProperty("current")) { - error( - "Unexpected ref object provided for %s. " + - "Use either a ref-setter function or React.createRef().", - getComponentNameFromFiber(finishedWork) - ); - } - } // $FlowFixMe[incompatible-use] unable to narrow type to the non-function case + } + } else if (node.tag === HostText) { + if (hostSubtreeRoot === null) { + try { + var _instance = node.stateNode; - ref.current = instanceToUse; + if (isHidden) { + hideTextInstance(_instance); + } else { + unhideTextInstance(_instance, node.memoizedProps); + } + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } } + } else if ((node.tag === OffscreenComponent || node.tag === LegacyHiddenComponent) && node.memoizedState !== null && node !== finishedWork) ; else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; } - } - function detachFiberMutation(fiber) { - // Cut off the return pointer to disconnect it from the tree. - // This enables us to detect and warn against state updates on an unmounted component. - // It also prevents events from bubbling from within disconnected components. - // - // Ideally, we should also clear the child pointer of the parent alternate to let this - // get GC:ed but we don't know which for sure which parent is the current - // one so we'll settle for GC:ing the subtree of this child. - // This child itself will be GC:ed when the parent updates the next time. - // - // Note that we can't clear child or sibling pointers yet. - // They're needed for passive effects and for findDOMNode. - // We defer those fields, and all other cleanup, to the passive phase (see detachFiberAfterEffects). - // - // Don't reset the alternate yet, either. We need that so we can detach the - // alternate's fields in the passive phase. Clearing the return pointer is - // sufficient for findDOMNode semantics. - var alternate = fiber.alternate; + if (node === finishedWork) { + return; + } - if (alternate !== null) { - alternate.return = null; + while (node.sibling === null) { + if (node.return === null || node.return === finishedWork) { + return; + } + + if (hostSubtreeRoot === node) { + hostSubtreeRoot = null; + } + + node = node.return; + } + + if (hostSubtreeRoot === node) { + hostSubtreeRoot = null; } - fiber.return = null; + node.sibling.return = node.return; + node = node.sibling; } + } +} - function detachFiberAfterEffects(fiber) { - var alternate = fiber.alternate; +function commitAttachRef(finishedWork) { + var ref = finishedWork.ref; - if (alternate !== null) { - fiber.alternate = null; - detachFiberAfterEffects(alternate); - } // Clear cyclical Fiber fields. This level alone is designed to roughly - // approximate the planned Fiber refactor. In that world, `setState` will be - // bound to a special "instance" object instead of a Fiber. The Instance - // object will not have any of these fields. It will only be connected to - // the fiber tree via a single link at the root. So if this level alone is - // sufficient to fix memory issues, that bodes well for our plans. + if (ref !== null) { + var instance = finishedWork.stateNode; + var instanceToUse; - fiber.child = null; - fiber.deletions = null; - fiber.sibling = null; // The `stateNode` is cyclical because on host nodes it points to the host + switch (finishedWork.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + instanceToUse = getPublicInstance(instance); + break; - fiber.stateNode = null; + default: + instanceToUse = instance; + } // Moved outside to ensure DCE works with this flag + if (typeof ref === 'function') { + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + finishedWork.refCleanup = ref(instanceToUse); + } finally { + recordLayoutEffectDuration(finishedWork); + } + } else { + finishedWork.refCleanup = ref(instanceToUse); + } + } else { { - fiber._debugOwner = null; - } // Theoretically, nothing in here should be necessary, because we already - // disconnected the fiber from the tree. So even if something leaks this - // particular fiber, it won't leak anything else. + // TODO: We should move these warnings to happen during the render + // phase (markRef). + if (!ref.hasOwnProperty('current')) { + error('Unexpected ref object provided for %s. ' + 'Use either a ref-setter function or React.createRef().', getComponentNameFromFiber(finishedWork)); + } + } // $FlowFixMe[incompatible-use] unable to narrow type to the non-function case - fiber.return = null; - fiber.dependencies = null; - fiber.memoizedProps = null; - fiber.memoizedState = null; - fiber.pendingProps = null; - fiber.stateNode = null; // TODO: Move to `commitPassiveUnmountInsideDeletedTreeOnFiber` instead. - fiber.updateQueue = null; + ref.current = instanceToUse; } + } +} - function getHostParentFiber(fiber) { - var parent = fiber.return; +function detachFiberMutation(fiber) { + // Cut off the return pointer to disconnect it from the tree. + // This enables us to detect and warn against state updates on an unmounted component. + // It also prevents events from bubbling from within disconnected components. + // + // Ideally, we should also clear the child pointer of the parent alternate to let this + // get GC:ed but we don't know which for sure which parent is the current + // one so we'll settle for GC:ing the subtree of this child. + // This child itself will be GC:ed when the parent updates the next time. + // + // Note that we can't clear child or sibling pointers yet. + // They're needed for passive effects and for findDOMNode. + // We defer those fields, and all other cleanup, to the passive phase (see detachFiberAfterEffects). + // + // Don't reset the alternate yet, either. We need that so we can detach the + // alternate's fields in the passive phase. Clearing the return pointer is + // sufficient for findDOMNode semantics. + var alternate = fiber.alternate; + + if (alternate !== null) { + alternate.return = null; + } + + fiber.return = null; +} - while (parent !== null) { - if (isHostParent(parent)) { - return parent; - } +function detachFiberAfterEffects(fiber) { + var alternate = fiber.alternate; - parent = parent.return; - } + if (alternate !== null) { + fiber.alternate = null; + detachFiberAfterEffects(alternate); + } // Clear cyclical Fiber fields. This level alone is designed to roughly + // approximate the planned Fiber refactor. In that world, `setState` will be + // bound to a special "instance" object instead of a Fiber. The Instance + // object will not have any of these fields. It will only be connected to + // the fiber tree via a single link at the root. So if this level alone is + // sufficient to fix memory issues, that bodes well for our plans. - throw new Error( - "Expected to find a host parent. This error is likely caused by a bug " + - "in React. Please file an issue." - ); - } - function isHostParent(fiber) { - return ( - fiber.tag === HostComponent || - fiber.tag === HostRoot || - false || - false || - fiber.tag === HostPortal - ); - } + fiber.child = null; + fiber.deletions = null; + fiber.sibling = null; // The `stateNode` is cyclical because on host nodes it points to the host - function getHostSibling(fiber) { - // We're going to search forward into the tree until we find a sibling host - // node. Unfortunately, if multiple insertions are done in a row we have to - // search past them. This leads to exponential search for the next sibling. - // TODO: Find a more efficient way to do this. - var node = fiber; + fiber.stateNode = null; - siblings: while (true) { - // If we didn't find anything, let's try the next sibling. - while (node.sibling === null) { - if (node.return === null || isHostParent(node.return)) { - // If we pop out of the root or hit the parent the fiber we are the - // last sibling. - return null; - } // $FlowFixMe[incompatible-type] found when upgrading Flow + { + fiber._debugOwner = null; + } // Theoretically, nothing in here should be necessary, because we already + // disconnected the fiber from the tree. So even if something leaks this + // particular fiber, it won't leak anything else. - node = node.return; - } - node.sibling.return = node.return; - node = node.sibling; - - while ( - node.tag !== HostComponent && - node.tag !== HostText && - true && - node.tag !== DehydratedFragment - ) { - // If it is not host node and, we might have a host node inside it. - // Try to search down until we find one. - if (node.flags & Placement) { - // If we don't have a child, try the siblings instead. - continue siblings; - } // If we don't have a child, try the siblings instead. - // We also skip portals because they are not part of this host tree. - - if (node.child === null || node.tag === HostPortal) { - continue siblings; - } else { - node.child.return = node; - node = node.child; - } - } // Check if this host node is stable or about to be placed. + fiber.return = null; + fiber.dependencies = null; + fiber.memoizedProps = null; + fiber.memoizedState = null; + fiber.pendingProps = null; + fiber.stateNode = null; // TODO: Move to `commitPassiveUnmountInsideDeletedTreeOnFiber` instead. - if (!(node.flags & Placement)) { - // Found it! - return node.stateNode; - } - } + fiber.updateQueue = null; +} + +function getHostParentFiber(fiber) { + var parent = fiber.return; + + while (parent !== null) { + if (isHostParent(parent)) { + return parent; } - function commitPlacement(finishedWork) { - var parentFiber = getHostParentFiber(finishedWork); + parent = parent.return; + } - switch (parentFiber.tag) { - case HostSingleton: + throw new Error('Expected to find a host parent. This error is likely caused by a bug ' + 'in React. Please file an issue.'); +} - case HostComponent: { - var _parent = parentFiber.stateNode; +function isHostParent(fiber) { + return fiber.tag === HostComponent || fiber.tag === HostRoot || (false) || (false) || fiber.tag === HostPortal; +} - if (parentFiber.flags & ContentReset) { - parentFiber.flags &= ~ContentReset; - } +function getHostSibling(fiber) { + // We're going to search forward into the tree until we find a sibling host + // node. Unfortunately, if multiple insertions are done in a row we have to + // search past them. This leads to exponential search for the next sibling. + // TODO: Find a more efficient way to do this. + var node = fiber; + + siblings: while (true) { + // If we didn't find anything, let's try the next sibling. + while (node.sibling === null) { + if (node.return === null || isHostParent(node.return)) { + // If we pop out of the root or hit the parent the fiber we are the + // last sibling. + return null; + } // $FlowFixMe[incompatible-type] found when upgrading Flow - var _before = getHostSibling(finishedWork); // We only have the top Fiber that was inserted but we need to recurse down its - // children to find all the terminal nodes. - insertOrAppendPlacementNode(finishedWork, _before, _parent); - break; - } + node = node.return; + } - case HostRoot: - case HostPortal: { - var _parent2 = parentFiber.stateNode.containerInfo; + node.sibling.return = node.return; + node = node.sibling; - var _before2 = getHostSibling(finishedWork); + while (node.tag !== HostComponent && node.tag !== HostText && (true ) && node.tag !== DehydratedFragment) { + // If it is not host node and, we might have a host node inside it. + // Try to search down until we find one. + if (node.flags & Placement) { + // If we don't have a child, try the siblings instead. + continue siblings; + } // If we don't have a child, try the siblings instead. + // We also skip portals because they are not part of this host tree. - insertOrAppendPlacementNodeIntoContainer( - finishedWork, - _before2, - _parent2 - ); - break; - } - default: - throw new Error( - "Invalid host parent fiber. This error is likely caused by a bug " + - "in React. Please file an issue." - ); + if (node.child === null || node.tag === HostPortal) { + continue siblings; + } else { + node.child.return = node; + node = node.child; } - } + } // Check if this host node is stable or about to be placed. - function insertOrAppendPlacementNodeIntoContainer(node, before, parent) { - var tag = node.tag; - var isHost = tag === HostComponent || tag === HostText; - if (isHost) { - var stateNode = node.stateNode; + if (!(node.flags & Placement)) { + // Found it! + return node.stateNode; + } + } +} - if (before) { - insertInContainerBefore(parent, stateNode, before); - } else { - appendChildToContainer(parent, stateNode); - } - } else if (tag === HostPortal || false); - else { - var child = node.child; +function commitPlacement(finishedWork) { - if (child !== null) { - insertOrAppendPlacementNodeIntoContainer(child, before, parent); - var sibling = child.sibling; - while (sibling !== null) { - insertOrAppendPlacementNodeIntoContainer(sibling, before, parent); - sibling = sibling.sibling; - } - } - } - } + var parentFiber = getHostParentFiber(finishedWork); - function insertOrAppendPlacementNode(node, before, parent) { - var tag = node.tag; - var isHost = tag === HostComponent || tag === HostText; + switch (parentFiber.tag) { + case HostSingleton: - if (isHost) { - var stateNode = node.stateNode; + case HostComponent: + { + var _parent = parentFiber.stateNode; - if (before) { - insertBefore(parent, stateNode, before); - } else { - appendChild(parent, stateNode); + if (parentFiber.flags & ContentReset) { + + parentFiber.flags &= ~ContentReset; } - } else if (tag === HostPortal || false); - else { - var child = node.child; - if (child !== null) { - insertOrAppendPlacementNode(child, before, parent); - var sibling = child.sibling; + var _before = getHostSibling(finishedWork); // We only have the top Fiber that was inserted but we need to recurse down its + // children to find all the terminal nodes. - while (sibling !== null) { - insertOrAppendPlacementNode(sibling, before, parent); - sibling = sibling.sibling; - } - } - } - } // These are tracked on the stack as we recursively traverse a - // deleted subtree. - // TODO: Update these during the whole mutation phase, not just during - // a deletion. - var hostParent = null; - var hostParentIsContainer = false; + insertOrAppendPlacementNode(finishedWork, _before, _parent); + break; + } - function commitDeletionEffects(root, returnFiber, deletedFiber) { + case HostRoot: + case HostPortal: { - // We only have the top Fiber that was deleted but we need to recurse down its - // children to find all the terminal nodes. - // Recursively delete all host nodes from the parent, detach refs, clean - // up mounted layout effects, and call componentWillUnmount. - // We only need to remove the topmost host child in each branch. But then we - // still need to keep traversing to unmount effects, refs, and cWU. TODO: We - // could split this into two separate traversals functions, where the second - // one doesn't include any removeChild logic. This is maybe the same - // function as "disappearLayoutEffects" (or whatever that turns into after - // the layout phase is refactored to use recursion). - // Before starting, find the nearest host parent on the stack so we know - // which instance/container to remove the children from. - // TODO: Instead of searching up the fiber return path on every deletion, we - // can track the nearest host component on the JS stack as we traverse the - // tree during the commit phase. This would make insertions faster, too. - var parent = returnFiber; - - findParent: while (parent !== null) { - switch (parent.tag) { - case HostSingleton: - case HostComponent: { - hostParent = parent.stateNode; - hostParentIsContainer = false; - break findParent; - } + var _parent2 = parentFiber.stateNode.containerInfo; - case HostRoot: { - hostParent = parent.stateNode.containerInfo; - hostParentIsContainer = true; - break findParent; - } + var _before2 = getHostSibling(finishedWork); - case HostPortal: { - hostParent = parent.stateNode.containerInfo; - hostParentIsContainer = true; - break findParent; - } - } + insertOrAppendPlacementNodeIntoContainer(finishedWork, _before2, _parent2); + break; + } - parent = parent.return; - } + default: + throw new Error('Invalid host parent fiber. This error is likely caused by a bug ' + 'in React. Please file an issue.'); + } +} - if (hostParent === null) { - throw new Error( - "Expected to find a host parent. This error is likely caused by " + - "a bug in React. Please file an issue." - ); - } +function insertOrAppendPlacementNodeIntoContainer(node, before, parent) { + var tag = node.tag; + var isHost = tag === HostComponent || tag === HostText; - commitDeletionEffectsOnFiber(root, returnFiber, deletedFiber); - hostParent = null; - hostParentIsContainer = false; - } + if (isHost) { + var stateNode = node.stateNode; - detachFiberMutation(deletedFiber); + if (before) { + insertInContainerBefore(parent, stateNode, before); + } else { + appendChildToContainer(parent, stateNode); } + } else if (tag === HostPortal || (false)) ; else { + var child = node.child; - function recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - parent - ) { - // TODO: Use a static flag to skip trees that don't have unmount effects - var child = parent.child; + if (child !== null) { + insertOrAppendPlacementNodeIntoContainer(child, before, parent); + var sibling = child.sibling; - while (child !== null) { - commitDeletionEffectsOnFiber( - finishedRoot, - nearestMountedAncestor, - child - ); - child = child.sibling; + while (sibling !== null) { + insertOrAppendPlacementNodeIntoContainer(sibling, before, parent); + sibling = sibling.sibling; } } + } +} - function commitDeletionEffectsOnFiber( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ) { - onCommitUnmount(deletedFiber); // The cases in this outer switch modify the stack before they traverse - // into their subtree. There are simpler cases in the inner switch - // that don't modify the stack. - - switch (deletedFiber.tag) { - case HostHoistable: - +function insertOrAppendPlacementNode(node, before, parent) { + var tag = node.tag; + var isHost = tag === HostComponent || tag === HostText; + + if (isHost) { + var stateNode = node.stateNode; + + if (before) { + insertBefore(parent, stateNode, before); + } else { + appendChild(parent, stateNode); + } + } else if (tag === HostPortal || (false)) ; else { + var child = node.child; + + if (child !== null) { + insertOrAppendPlacementNode(child, before, parent); + var sibling = child.sibling; + + while (sibling !== null) { + insertOrAppendPlacementNode(sibling, before, parent); + sibling = sibling.sibling; + } + } + } +} // These are tracked on the stack as we recursively traverse a +// deleted subtree. +// TODO: Update these during the whole mutation phase, not just during +// a deletion. + + +var hostParent = null; +var hostParentIsContainer = false; + +function commitDeletionEffects(root, returnFiber, deletedFiber) { + { + // We only have the top Fiber that was deleted but we need to recurse down its + // children to find all the terminal nodes. + // Recursively delete all host nodes from the parent, detach refs, clean + // up mounted layout effects, and call componentWillUnmount. + // We only need to remove the topmost host child in each branch. But then we + // still need to keep traversing to unmount effects, refs, and cWU. TODO: We + // could split this into two separate traversals functions, where the second + // one doesn't include any removeChild logic. This is maybe the same + // function as "disappearLayoutEffects" (or whatever that turns into after + // the layout phase is refactored to use recursion). + // Before starting, find the nearest host parent on the stack so we know + // which instance/container to remove the children from. + // TODO: Instead of searching up the fiber return path on every deletion, we + // can track the nearest host component on the JS stack as we traverse the + // tree during the commit phase. This would make insertions faster, too. + var parent = returnFiber; + + findParent: while (parent !== null) { + switch (parent.tag) { case HostSingleton: + case HostComponent: + { + hostParent = parent.stateNode; + hostParentIsContainer = false; + break findParent; + } - case HostComponent: { - if (!offscreenSubtreeWasHidden) { - safelyDetachRef(deletedFiber, nearestMountedAncestor); - } // Intentional fallthrough to next branch - } + case HostRoot: + { + hostParent = parent.stateNode.containerInfo; + hostParentIsContainer = true; + break findParent; + } - case HostText: { - // We only need to remove the nearest host child. Set the host parent - // to `null` on the stack to indicate that nested children don't - // need to be removed. + case HostPortal: { - var _prevHostParent = hostParent; - var _prevHostParentIsContainer = hostParentIsContainer; - hostParent = null; - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - hostParent = _prevHostParent; - hostParentIsContainer = _prevHostParentIsContainer; - - if (hostParent !== null) { - // Now that all the child effects have unmounted, we can remove the - // node from the tree. - if (hostParentIsContainer) { - removeChildFromContainer(hostParent, deletedFiber.stateNode); - } else { - removeChild(hostParent, deletedFiber.stateNode); - } - } + hostParent = parent.stateNode.containerInfo; + hostParentIsContainer = true; + break findParent; } + } - return; - } + parent = parent.return; + } + + if (hostParent === null) { + throw new Error('Expected to find a host parent. This error is likely caused by ' + 'a bug in React. Please file an issue.'); + } - case DehydratedFragment: { - // Delete the dehydrated suspense boundary and all of its content. + commitDeletionEffectsOnFiber(root, returnFiber, deletedFiber); + hostParent = null; + hostParentIsContainer = false; + } - { - if (hostParent !== null) { - if (hostParentIsContainer) { - clearSuspenseBoundaryFromContainer(); - } else { - clearSuspenseBoundary(); - } + detachFiberMutation(deletedFiber); +} + +function recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, parent) { + // TODO: Use a static flag to skip trees that don't have unmount effects + var child = parent.child; + + while (child !== null) { + commitDeletionEffectsOnFiber(finishedRoot, nearestMountedAncestor, child); + child = child.sibling; + } +} + +function commitDeletionEffectsOnFiber(finishedRoot, nearestMountedAncestor, deletedFiber) { + onCommitUnmount(deletedFiber); // The cases in this outer switch modify the stack before they traverse + // into their subtree. There are simpler cases in the inner switch + // that don't modify the stack. + + switch (deletedFiber.tag) { + case HostHoistable: + + case HostSingleton: + + case HostComponent: + { + if (!offscreenSubtreeWasHidden) { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + } // Intentional fallthrough to next branch + + } + + case HostText: + { + // We only need to remove the nearest host child. Set the host parent + // to `null` on the stack to indicate that nested children don't + // need to be removed. + { + var _prevHostParent = hostParent; + var _prevHostParentIsContainer = hostParentIsContainer; + hostParent = null; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + hostParent = _prevHostParent; + hostParentIsContainer = _prevHostParentIsContainer; + + if (hostParent !== null) { + // Now that all the child effects have unmounted, we can remove the + // node from the tree. + if (hostParentIsContainer) { + removeChildFromContainer(hostParent, deletedFiber.stateNode); + } else { + removeChild(hostParent, deletedFiber.stateNode); } } - - return; } - case HostPortal: { - { - // When we go into a portal, it becomes the parent to remove from. - var _prevHostParent2 = hostParent; - var _prevHostParentIsContainer2 = hostParentIsContainer; - hostParent = deletedFiber.stateNode.containerInfo; - hostParentIsContainer = true; - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - hostParent = _prevHostParent2; - hostParentIsContainer = _prevHostParentIsContainer2; - } + return; + } - return; - } + case DehydratedFragment: + { + // Delete the dehydrated suspense boundary and all of its content. - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - if (!offscreenSubtreeWasHidden) { - var updateQueue = deletedFiber.updateQueue; - if (updateQueue !== null) { - var lastEffect = updateQueue.lastEffect; + { + if (hostParent !== null) { + if (hostParentIsContainer) { + clearSuspenseBoundaryFromContainer(); + } else { + clearSuspenseBoundary(); + } + } + } - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; + return; + } - do { - var tag = effect.tag; - var inst = effect.inst; - var destroy = inst.destroy; + case HostPortal: + { + { + // When we go into a portal, it becomes the parent to remove from. + var _prevHostParent2 = hostParent; + var _prevHostParentIsContainer2 = hostParentIsContainer; + hostParent = deletedFiber.stateNode.containerInfo; + hostParentIsContainer = true; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + hostParent = _prevHostParent2; + hostParentIsContainer = _prevHostParentIsContainer2; + } - if (destroy !== undefined) { - if ((tag & Insertion) !== NoFlags) { - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - } else if ((tag & Layout) !== NoFlags) { - { - markComponentLayoutEffectUnmountStarted(deletedFiber); - } + return; + } - if (shouldProfile(deletedFiber)) { - startLayoutEffectTimer(); - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - recordLayoutEffectDuration(deletedFiber); - } else { - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - } + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + if (!offscreenSubtreeWasHidden) { + var updateQueue = deletedFiber.updateQueue; - { - markComponentLayoutEffectUnmountStopped(); - } + if (updateQueue !== null) { + var lastEffect = updateQueue.lastEffect; + + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; + + do { + var tag = effect.tag; + var inst = effect.inst; + var destroy = inst.destroy; + + if (destroy !== undefined) { + if ((tag & Insertion) !== NoFlags) { + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + } else if ((tag & Layout) !== NoFlags) { + { + markComponentLayoutEffectUnmountStarted(deletedFiber); } - } - effect = effect.next; - } while (effect !== firstEffect); - } - } - } + if (shouldProfile(deletedFiber)) { + startLayoutEffectTimer(); + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + recordLayoutEffectDuration(deletedFiber); + } else { + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + } - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; - } + { + markComponentLayoutEffectUnmountStopped(); + } + } + } - case ClassComponent: { - if (!offscreenSubtreeWasHidden) { - safelyDetachRef(deletedFiber, nearestMountedAncestor); - var instance = deletedFiber.stateNode; - - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount( - deletedFiber, - nearestMountedAncestor, - instance - ); + effect = effect.next; + } while (effect !== firstEffect); } } - - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; } - case ScopeComponent: { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; - } + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; + } - case OffscreenComponent: { + case ClassComponent: + { + if (!offscreenSubtreeWasHidden) { safelyDetachRef(deletedFiber, nearestMountedAncestor); + var instance = deletedFiber.stateNode; - if (deletedFiber.mode & ConcurrentMode) { - // If this offscreen component is hidden, we already unmounted it. Before - // deleting the children, track that it's already unmounted so that we - // don't attempt to unmount the effects again. - // TODO: If the tree is hidden, in most cases we should be able to skip - // over the nested children entirely. An exception is we haven't yet found - // the topmost host node to delete, which we already track on the stack. - // But the other case is portals, which need to be detached no matter how - // deeply they are nested. We should use a subtree flag to track whether a - // subtree includes a nested portal. - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeWasHidden = - prevOffscreenSubtreeWasHidden || - deletedFiber.memoizedState !== null; - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; - } else { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(deletedFiber, nearestMountedAncestor, instance); } - - break; } - default: { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; - } + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; } - } - - function commitSuspenseCallback(finishedWork) {} - function getRetryCache(finishedWork) { - // TODO: Unify the interface for the retry cache so we don't have to switch - // on the tag like this. - switch (finishedWork.tag) { - case SuspenseComponent: - case SuspenseListComponent: { - var retryCache = finishedWork.stateNode; + case ScopeComponent: + { - if (retryCache === null) { - retryCache = finishedWork.stateNode = new PossiblyWeakSet(); - } + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; + } - return retryCache; + case OffscreenComponent: + { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + + if (deletedFiber.mode & ConcurrentMode) { + // If this offscreen component is hidden, we already unmounted it. Before + // deleting the children, track that it's already unmounted so that we + // don't attempt to unmount the effects again. + // TODO: If the tree is hidden, in most cases we should be able to skip + // over the nested children entirely. An exception is we haven't yet found + // the topmost host node to delete, which we already track on the stack. + // But the other case is portals, which need to be detached no matter how + // deeply they are nested. We should use a subtree flag to track whether a + // subtree includes a nested portal. + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden || deletedFiber.memoizedState !== null; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + } else { + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); } - case OffscreenComponent: { - var instance = finishedWork.stateNode; - var _retryCache = instance._retryCache; + break; + } - if (_retryCache === null) { - _retryCache = instance._retryCache = new PossiblyWeakSet(); - } + default: + { + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; + } + } +} - return _retryCache; - } +function commitSuspenseCallback(finishedWork) { +} - default: { - throw new Error( - "Unexpected Suspense handler tag (" + - finishedWork.tag + - "). This is a " + - "bug in React." - ); - } - } - } +function getRetryCache(finishedWork) { + // TODO: Unify the interface for the retry cache so we don't have to switch + // on the tag like this. + switch (finishedWork.tag) { + case SuspenseComponent: + case SuspenseListComponent: + { + var retryCache = finishedWork.stateNode; - function detachOffscreenInstance(instance) { - var fiber = instance._current; + if (retryCache === null) { + retryCache = finishedWork.stateNode = new PossiblyWeakSet(); + } - if (fiber === null) { - throw new Error( - "Calling Offscreen.detach before instance handle has been set." - ); + return retryCache; } - if ((instance._pendingVisibility & OffscreenDetached) !== NoFlags$1) { - // The instance is already detached, this is a noop. - return; - } // TODO: There is an opportunity to optimise this by not entering commit phase - // and unmounting effects directly. + case OffscreenComponent: + { + var instance = finishedWork.stateNode; + var _retryCache = instance._retryCache; - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (_retryCache === null) { + _retryCache = instance._retryCache = new PossiblyWeakSet(); + } - if (root !== null) { - instance._pendingVisibility |= OffscreenDetached; - scheduleUpdateOnFiber(root, fiber, SyncLane); + return _retryCache; } - } - function attachOffscreenInstance(instance) { - var fiber = instance._current; - if (fiber === null) { - throw new Error( - "Calling Offscreen.detach before instance handle has been set." - ); + default: + { + throw new Error("Unexpected Suspense handler tag (" + finishedWork.tag + "). This is a " + 'bug in React.'); } + } +} - if ((instance._pendingVisibility & OffscreenDetached) === NoFlags$1) { - // The instance is already attached, this is a noop. - return; - } +function detachOffscreenInstance(instance) { + var fiber = instance._current; - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (fiber === null) { + throw new Error('Calling Offscreen.detach before instance handle has been set.'); + } - if (root !== null) { - instance._pendingVisibility &= ~OffscreenDetached; - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } + if ((instance._pendingVisibility & OffscreenDetached) !== NoFlags$1) { + // The instance is already detached, this is a noop. + return; + } // TODO: There is an opportunity to optimise this by not entering commit phase + // and unmounting effects directly. - function attachSuspenseRetryListeners(finishedWork, wakeables) { - // If this boundary just timed out, then it will have a set of wakeables. - // For each wakeable, attach a listener so that when it resolves, React - // attempts to re-render the boundary in the primary (pre-timeout) state. - var retryCache = getRetryCache(finishedWork); - wakeables.forEach(function (wakeable) { - // Memoize using the boundary fiber to prevent redundant listeners. - var retry = resolveRetryWakeable.bind(null, finishedWork, wakeable); - if (!retryCache.has(wakeable)) { - retryCache.add(wakeable); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - wakeable.then(retry, retry); - } - }); - } // This function detects when a Suspense boundary goes from visible to hidden. - function commitMutationEffects(root, finishedWork, committedLanes) { - setCurrentFiber(finishedWork); - commitMutationEffectsOnFiber(finishedWork, root); - setCurrentFiber(finishedWork); - } + if (root !== null) { + instance._pendingVisibility |= OffscreenDetached; + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} +function attachOffscreenInstance(instance) { + var fiber = instance._current; - function recursivelyTraverseMutationEffects(root, parentFiber, lanes) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects hae fired. - var deletions = parentFiber.deletions; + if (fiber === null) { + throw new Error('Calling Offscreen.detach before instance handle has been set.'); + } - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; + if ((instance._pendingVisibility & OffscreenDetached) === NoFlags$1) { + // The instance is already attached, this is a noop. + return; + } - try { - commitDeletionEffects(root, parentFiber, childToDelete); - } catch (error) { - captureCommitPhaseError(childToDelete, parentFiber, error); - } - } - } + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var prevDebugFiber = getCurrentFiber(); + if (root !== null) { + instance._pendingVisibility &= ~OffscreenDetached; + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} - if (parentFiber.subtreeFlags & MutationMask) { - var child = parentFiber.child; +function attachSuspenseRetryListeners(finishedWork, wakeables) { + // If this boundary just timed out, then it will have a set of wakeables. + // For each wakeable, attach a listener so that when it resolves, React + // attempts to re-render the boundary in the primary (pre-timeout) state. + var retryCache = getRetryCache(finishedWork); + wakeables.forEach(function (wakeable) { + // Memoize using the boundary fiber to prevent redundant listeners. + var retry = resolveRetryWakeable.bind(null, finishedWork, wakeable); + + if (!retryCache.has(wakeable)) { + retryCache.add(wakeable); + + wakeable.then(retry, retry); + } + }); +} // This function detects when a Suspense boundary goes from visible to hidden. +function commitMutationEffects(root, finishedWork, committedLanes) { + setCurrentFiber(finishedWork); + commitMutationEffectsOnFiber(finishedWork, root); + setCurrentFiber(finishedWork); +} - while (child !== null) { - setCurrentFiber(child); - commitMutationEffectsOnFiber(child, root); - child = child.sibling; - } +function recursivelyTraverseMutationEffects(root, parentFiber, lanes) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects hae fired. + var deletions = parentFiber.deletions; + + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; + + try { + commitDeletionEffects(root, parentFiber, childToDelete); + } catch (error) { + captureCommitPhaseError(childToDelete, parentFiber, error); } + } + } + + var prevDebugFiber = getCurrentFiber(); - setCurrentFiber(prevDebugFiber); + if (parentFiber.subtreeFlags & MutationMask) { + var child = parentFiber.child; + + while (child !== null) { + setCurrentFiber(child); + commitMutationEffectsOnFiber(child, root); + child = child.sibling; } + } + + setCurrentFiber(prevDebugFiber); +} - function commitMutationEffectsOnFiber(finishedWork, root, lanes) { - var current = finishedWork.alternate; - var flags = finishedWork.flags; // The effect flag should be checked *after* we refine the type of fiber, - // because the fiber tag is more specific. An exception is any flag related - // to reconciliation, because those can be set on all fiber types. +function commitMutationEffectsOnFiber(finishedWork, root, lanes) { + var current = finishedWork.alternate; + var flags = finishedWork.flags; // The effect flag should be checked *after* we refine the type of fiber, + // because the fiber tag is more specific. An exception is any flag related + // to reconciliation, because those can be set on all fiber types. - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - if (flags & Update) { + if (flags & Update) { + try { + commitHookEffectListUnmount(Insertion | HasEffect, finishedWork, finishedWork.return); + commitHookEffectListMount(Insertion | HasEffect, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } // Layout effects are destroyed during the mutation phase so that all + // destroy functions for all fibers are called before any create functions. + // This prevents sibling component effects from interfering with each other, + // e.g. a destroy function in one component should never override a ref set + // by a create function in another component during the same commit. + + + if (shouldProfile(finishedWork)) { try { - commitHookEffectListUnmount( - Insertion | HasEffect, - finishedWork, - finishedWork.return - ); - commitHookEffectListMount(Insertion | HasEffect, finishedWork); + startLayoutEffectTimer(); + commitHookEffectListUnmount(Layout | HasEffect, finishedWork, finishedWork.return); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); - } // Layout effects are destroyed during the mutation phase so that all - // destroy functions for all fibers are called before any create functions. - // This prevents sibling component effects from interfering with each other, - // e.g. a destroy function in one component should never override a ref set - // by a create function in another component during the same commit. - - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListUnmount( - Layout | HasEffect, - finishedWork, - finishedWork.return - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } + } - recordLayoutEffectDuration(finishedWork); - } else { - try { - commitHookEffectListUnmount( - Layout | HasEffect, - finishedWork, - finishedWork.return - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } + recordLayoutEffectDuration(finishedWork); + } else { + try { + commitHookEffectListUnmount(Layout | HasEffect, finishedWork, finishedWork.return); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } } - - return; } - case ClassComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + return; + } - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); - } + case ClassComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); } + } - if (flags & Callback && offscreenSubtreeIsHidden) { - var updateQueue = finishedWork.updateQueue; + if (flags & Callback && offscreenSubtreeIsHidden) { + var updateQueue = finishedWork.updateQueue; - if (updateQueue !== null) { - deferHiddenCallbacks(updateQueue); - } + if (updateQueue !== null) { + deferHiddenCallbacks(updateQueue); } - - return; } - case HostHoistable: - - case HostSingleton: + return; + } - case HostComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + case HostHoistable: - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); - } - } + case HostSingleton: - { - // TODO: ContentReset gets cleared by the children during the commit - // phase. This is a refactor hazard because it means we must read - // flags the flags after `commitReconciliationEffects` has already run; - // the order matters. We should refactor so that ContentReset does not - // rely on mutating the flag during commit. Like by setting a flag - // during the render phase instead. - if (finishedWork.flags & ContentReset) { - var instance = finishedWork.stateNode; + case HostComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - try { - resetTextContent(instance); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); + } + } - if (flags & Update) { - var _instance2 = finishedWork.stateNode; - - if (_instance2 != null) { - // Commit the work prepared earlier. - var newProps = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps - // as the newProps. The updatePayload will contain the real change in - // this case. - - var oldProps = - current !== null ? current.memoizedProps : newProps; - var type = finishedWork.type; // TODO: Type the updateQueue to be specific to host components. - - var _updatePayload = finishedWork.updateQueue; - finishedWork.updateQueue = null; - - try { - commitUpdate( - _instance2, - _updatePayload, - type, - oldProps, - newProps, - finishedWork - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } + { + // TODO: ContentReset gets cleared by the children during the commit + // phase. This is a refactor hazard because it means we must read + // flags the flags after `commitReconciliationEffects` has already run; + // the order matters. We should refactor so that ContentReset does not + // rely on mutating the flag during commit. Like by setting a flag + // during the render phase instead. + if (finishedWork.flags & ContentReset) { + var instance = finishedWork.stateNode; - if (flags & FormReset) { - { - if (finishedWork.type !== "form") { - // Paranoid coding. In case we accidentally start using the - // FormReset bit for something else. - error( - "Unexpected host component type. Expected a form. This is a " + - "bug in React." - ); - } - } + try { + resetTextContent(instance); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } } - return; - } - - case HostText: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); - if (flags & Update) { - { - if (finishedWork.stateNode === null) { - throw new Error( - "This should have a text node initialized. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } + var _instance2 = finishedWork.stateNode; - var textInstance = finishedWork.stateNode; - var newText = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps + if (_instance2 != null) { + // Commit the work prepared earlier. + var newProps = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps // as the newProps. The updatePayload will contain the real change in // this case. - var oldText = current !== null ? current.memoizedProps : newText; + var oldProps = current !== null ? current.memoizedProps : newProps; + var type = finishedWork.type; // TODO: Type the updateQueue to be specific to host components. + + var _updatePayload = finishedWork.updateQueue; + finishedWork.updateQueue = null; try { - commitTextUpdate(textInstance, oldText, newText); + commitUpdate(_instance2, _updatePayload, type, oldProps, newProps, finishedWork); } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); + captureCommitPhaseError(finishedWork, finishedWork.return, error); } } } - return; - } + if (flags & FormReset) { - case HostRoot: { - { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + { + if (finishedWork.type !== 'form') { + // Paranoid coding. In case we accidentally start using the + // FormReset bit for something else. + error('Unexpected host component type. Expected a form. This is a ' + 'bug in React.'); + } + } } - - return; } - case HostPortal: { - { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); - } - - return; - } + return; + } - case SuspenseComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); // TODO: We should mark a flag on the Suspense fiber itself, rather than - // relying on the Offscreen fiber having a flag also being marked. The - // reason is that this offscreen fiber might not be part of the work-in- - // progress tree! It could have been reused from a previous render. This - // doesn't lead to incorrect behavior because we don't rely on the flag - // check alone; we also compare the states explicitly below. But for - // modeling purposes, we _should_ be able to rely on the flag check alone. - // So this is a bit fragile. - // - // Also, all this logic could/should move to the passive phase so it - // doesn't block paint. + case HostText: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - var offscreenFiber = finishedWork.child; + if (flags & Update) { + { + if (finishedWork.stateNode === null) { + throw new Error('This should have a text node initialized. This error is likely ' + 'caused by a bug in React. Please file an issue.'); + } - if (offscreenFiber.flags & Visibility) { - // Throttle the appearance and disappearance of Suspense fallbacks. - var isShowingFallback = finishedWork.memoizedState !== null; - var wasShowingFallback = - current !== null && current.memoizedState !== null; + var textInstance = finishedWork.stateNode; + var newText = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps + // as the newProps. The updatePayload will contain the real change in + // this case. - { - if (isShowingFallback && !wasShowingFallback) { - // Old behavior. Only mark when a fallback appears, not when - // it disappears. - markCommitTimeOfFallback(); - } - } - } + var oldText = current !== null ? current.memoizedProps : newText; - if (flags & Update) { try { - commitSuspenseCallback(finishedWork); + commitTextUpdate(textInstance, oldText, newText); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } + } + } + + return; + } - var retryQueue = finishedWork.updateQueue; + case HostRoot: + { + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + } - if (retryQueue !== null) { - finishedWork.updateQueue = null; - attachSuspenseRetryListeners(finishedWork, retryQueue); - } - } + return; + } - return; + case HostPortal: + { + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); } - case OffscreenComponent: { - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); + return; + } + + case SuspenseComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); // TODO: We should mark a flag on the Suspense fiber itself, rather than + // relying on the Offscreen fiber having a flag also being marked. The + // reason is that this offscreen fiber might not be part of the work-in- + // progress tree! It could have been reused from a previous render. This + // doesn't lead to incorrect behavior because we don't rely on the flag + // check alone; we also compare the states explicitly below. But for + // modeling purposes, we _should_ be able to rely on the flag check alone. + // So this is a bit fragile. + // + // Also, all this logic could/should move to the passive phase so it + // doesn't block paint. + + var offscreenFiber = finishedWork.child; + + if (offscreenFiber.flags & Visibility) { + // Throttle the appearance and disappearance of Suspense fallbacks. + var isShowingFallback = finishedWork.memoizedState !== null; + var wasShowingFallback = current !== null && current.memoizedState !== null; + + { + if (isShowingFallback && !wasShowingFallback) { + // Old behavior. Only mark when a fallback appears, not when + // it disappears. + markCommitTimeOfFallback(); } } + } - var newState = finishedWork.memoizedState; - var isHidden = newState !== null; - var wasHidden = current !== null && current.memoizedState !== null; + if (flags & Update) { + try { + commitSuspenseCallback(finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - if (finishedWork.mode & ConcurrentMode) { - // Before committing the children, track on the stack whether this - // offscreen subtree was already hidden, so that we don't unmount the - // effects again. - var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden || isHidden; - offscreenSubtreeWasHidden = - prevOffscreenSubtreeWasHidden || wasHidden; - recursivelyTraverseMutationEffects(root, finishedWork); - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; - } else { - recursivelyTraverseMutationEffects(root, finishedWork); + var retryQueue = finishedWork.updateQueue; + + if (retryQueue !== null) { + finishedWork.updateQueue = null; + attachSuspenseRetryListeners(finishedWork, retryQueue); } + } - commitReconciliationEffects(finishedWork); - var offscreenInstance = finishedWork.stateNode; // TODO: Add explicit effect flag to set _current. + return; + } - offscreenInstance._current = finishedWork; // Offscreen stores pending changes to visibility in `_pendingVisibility`. This is - // to support batching of `attach` and `detach` calls. + case OffscreenComponent: + { + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); + } + } - offscreenInstance._visibility &= ~OffscreenDetached; - offscreenInstance._visibility |= - offscreenInstance._pendingVisibility & OffscreenDetached; + var newState = finishedWork.memoizedState; + var isHidden = newState !== null; + var wasHidden = current !== null && current.memoizedState !== null; - if (flags & Visibility) { - // Track the current state on the Offscreen instance so we can - // read it during an event - if (isHidden) { - offscreenInstance._visibility &= ~OffscreenVisible; - } else { - offscreenInstance._visibility |= OffscreenVisible; - } + if (finishedWork.mode & ConcurrentMode) { + // Before committing the children, track on the stack whether this + // offscreen subtree was already hidden, so that we don't unmount the + // effects again. + var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden || isHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden || wasHidden; + recursivelyTraverseMutationEffects(root, finishedWork); + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; + } else { + recursivelyTraverseMutationEffects(root, finishedWork); + } - if (isHidden) { - var isUpdate = current !== null; - var wasHiddenByAncestorOffscreen = - offscreenSubtreeIsHidden || offscreenSubtreeWasHidden; // Only trigger disapper layout effects if: - // - This is an update, not first mount. - // - This Offscreen was not hidden before. - // - Ancestor Offscreen was not hidden in previous commit. - - if (isUpdate && !wasHidden && !wasHiddenByAncestorOffscreen) { - if ((finishedWork.mode & ConcurrentMode) !== NoMode) { - // Disappear the layout effects of all the children - recursivelyTraverseDisappearLayoutEffects(finishedWork); - } - } - } // Offscreen with manual mode manages visibility manually. + commitReconciliationEffects(finishedWork); + var offscreenInstance = finishedWork.stateNode; // TODO: Add explicit effect flag to set _current. - if (!isOffscreenManual(finishedWork)) { - // TODO: This needs to run whenever there's an insertion or update - // inside a hidden Offscreen tree. - hideOrUnhideAllChildren(finishedWork, isHidden); - } - } // TODO: Move to passive phase + offscreenInstance._current = finishedWork; // Offscreen stores pending changes to visibility in `_pendingVisibility`. This is + // to support batching of `attach` and `detach` calls. - if (flags & Update) { - var offscreenQueue = finishedWork.updateQueue; + offscreenInstance._visibility &= ~OffscreenDetached; + offscreenInstance._visibility |= offscreenInstance._pendingVisibility & OffscreenDetached; - if (offscreenQueue !== null) { - var _retryQueue = offscreenQueue.retryQueue; + if (flags & Visibility) { + // Track the current state on the Offscreen instance so we can + // read it during an event + if (isHidden) { + offscreenInstance._visibility &= ~OffscreenVisible; + } else { + offscreenInstance._visibility |= OffscreenVisible; + } - if (_retryQueue !== null) { - offscreenQueue.retryQueue = null; - attachSuspenseRetryListeners(finishedWork, _retryQueue); + if (isHidden) { + var isUpdate = current !== null; + var wasHiddenByAncestorOffscreen = offscreenSubtreeIsHidden || offscreenSubtreeWasHidden; // Only trigger disapper layout effects if: + // - This is an update, not first mount. + // - This Offscreen was not hidden before. + // - Ancestor Offscreen was not hidden in previous commit. + + if (isUpdate && !wasHidden && !wasHiddenByAncestorOffscreen) { + if ((finishedWork.mode & ConcurrentMode) !== NoMode) { + // Disappear the layout effects of all the children + recursivelyTraverseDisappearLayoutEffects(finishedWork); } } + } // Offscreen with manual mode manages visibility manually. + + + if (!isOffscreenManual(finishedWork)) { + // TODO: This needs to run whenever there's an insertion or update + // inside a hidden Offscreen tree. + hideOrUnhideAllChildren(finishedWork, isHidden); } + } // TODO: Move to passive phase - return; - } - case SuspenseListComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + if (flags & Update) { + var offscreenQueue = finishedWork.updateQueue; - if (flags & Update) { - var _retryQueue2 = finishedWork.updateQueue; + if (offscreenQueue !== null) { + var _retryQueue = offscreenQueue.retryQueue; - if (_retryQueue2 !== null) { - finishedWork.updateQueue = null; - attachSuspenseRetryListeners(finishedWork, _retryQueue2); + if (_retryQueue !== null) { + offscreenQueue.retryQueue = null; + attachSuspenseRetryListeners(finishedWork, _retryQueue); } } - - return; - } - - case ScopeComponent: { - return; } - default: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); - return; - } + return; } - } - function commitReconciliationEffects(finishedWork) { - // Placement effects (insertions, reorders) can be scheduled on any fiber - // type. They needs to happen after the children effects have fired, but - // before the effects on this fiber have fired. - var flags = finishedWork.flags; + case SuspenseListComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - if (flags & Placement) { - try { - commitPlacement(finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } // Clear the "placement" from effect tag so that we know that this is - // inserted, before any life-cycles like componentDidMount gets called. - // TODO: findDOMNode doesn't rely on this any more but isMounted does - // and isMounted is deprecated anyway so we should be able to kill this. + if (flags & Update) { + var _retryQueue2 = finishedWork.updateQueue; - finishedWork.flags &= ~Placement; - } + if (_retryQueue2 !== null) { + finishedWork.updateQueue = null; + attachSuspenseRetryListeners(finishedWork, _retryQueue2); + } + } - if (flags & Hydrating) { - finishedWork.flags &= ~Hydrating; + return; } - } - - function commitLayoutEffects(finishedWork, root, committedLanes) { - var current = finishedWork.alternate; - commitLayoutEffectOnFiber(root, current, finishedWork); - } - function recursivelyTraverseLayoutEffects(root, parentFiber, lanes) { - var prevDebugFiber = getCurrentFiber(); + case ScopeComponent: + { - if (parentFiber.subtreeFlags & LayoutMask) { - var child = parentFiber.child; + return; + } - while (child !== null) { - setCurrentFiber(child); - var current = child.alternate; - commitLayoutEffectOnFiber(root, current, child); - child = child.sibling; - } + default: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + return; } + } +} - setCurrentFiber(prevDebugFiber); - } +function commitReconciliationEffects(finishedWork) { + // Placement effects (insertions, reorders) can be scheduled on any fiber + // type. They needs to happen after the children effects have fired, but + // before the effects on this fiber have fired. + var flags = finishedWork.flags; + + if (flags & Placement) { + try { + commitPlacement(finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } // Clear the "placement" from effect tag so that we know that this is + // inserted, before any life-cycles like componentDidMount gets called. + // TODO: findDOMNode doesn't rely on this any more but isMounted does + // and isMounted is deprecated anyway so we should be able to kill this. + + + finishedWork.flags &= ~Placement; + } + + if (flags & Hydrating) { + finishedWork.flags &= ~Hydrating; + } +} - function disappearLayoutEffects(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - // TODO (Offscreen) Check: flags & LayoutStatic - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListUnmount( - Layout, - finishedWork, - finishedWork.return - ); - } finally { - recordLayoutEffectDuration(finishedWork); - } - } else { - commitHookEffectListUnmount( - Layout, - finishedWork, - finishedWork.return - ); - } +function commitLayoutEffects(finishedWork, root, committedLanes) { + var current = finishedWork.alternate; + commitLayoutEffectOnFiber(root, current, finishedWork); +} - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; - } +function recursivelyTraverseLayoutEffects(root, parentFiber, lanes) { + var prevDebugFiber = getCurrentFiber(); - case ClassComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - var instance = finishedWork.stateNode; + if (parentFiber.subtreeFlags & LayoutMask) { + var child = parentFiber.child; - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount( - finishedWork, - finishedWork.return, - instance - ); - } + while (child !== null) { + setCurrentFiber(child); + var current = child.alternate; + commitLayoutEffectOnFiber(root, current, child); + child = child.sibling; + } + } - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; - } + setCurrentFiber(prevDebugFiber); +} - case HostHoistable: - case HostSingleton: - case HostComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; +function disappearLayoutEffects(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + // TODO (Offscreen) Check: flags & LayoutStatic + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + commitHookEffectListUnmount(Layout, finishedWork, finishedWork.return); + } finally { + recordLayoutEffectDuration(finishedWork); + } + } else { + commitHookEffectListUnmount(Layout, finishedWork, finishedWork.return); } - case OffscreenComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - var isHidden = finishedWork.memoizedState !== null; + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; + } - if (isHidden); - else { - recursivelyTraverseDisappearLayoutEffects(finishedWork); - } + case ClassComponent: + { + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + var instance = finishedWork.stateNode; - break; + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(finishedWork, finishedWork.return, instance); } - default: { - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; - } + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } - } - - function recursivelyTraverseDisappearLayoutEffects(parentFiber) { - // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - var child = parentFiber.child; - while (child !== null) { - disappearLayoutEffects(child); - child = child.sibling; + case HostHoistable: + case HostSingleton: + case HostComponent: + { + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } - } - function reappearLayoutEffects( - finishedRoot, - current, - finishedWork, // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - includeWorkInProgressEffects - ) { - // Turn on layout effects in a tree that previously disappeared. - var flags = finishedWork.flags; + case OffscreenComponent: + { + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + var isHidden = finishedWork.memoizedState !== null; - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Check flags & LayoutStatic - - commitHookLayoutEffects(finishedWork, Layout); - break; + if (isHidden) ; else { + recursivelyTraverseDisappearLayoutEffects(finishedWork); } - case ClassComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Check for LayoutStatic flag + break; + } - var instance = finishedWork.stateNode; + default: + { + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; + } + } +} - if (typeof instance.componentDidMount === "function") { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } // Commit any callbacks that would have fired while the component - // was hidden. +function recursivelyTraverseDisappearLayoutEffects(parentFiber) { + // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) + var child = parentFiber.child; - var updateQueue = finishedWork.updateQueue; + while (child !== null) { + disappearLayoutEffects(child); + child = child.sibling; + } +} - if (updateQueue !== null) { - commitHiddenCallbacks(updateQueue, instance); - } // If this is newly finished work, check for setState callbacks +function reappearLayoutEffects(finishedRoot, current, finishedWork, // This function visits both newly finished work and nodes that were re-used +// from a previously committed tree. We cannot check non-static flags if the +// node was reused. +includeWorkInProgressEffects) { + // Turn on layout effects in a tree that previously disappeared. + var flags = finishedWork.flags; - if (includeWorkInProgressEffects && flags & Callback) { - commitClassCallbacks(finishedWork); - } // TODO: Check flags & RefStatic + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Check flags & LayoutStatic - safelyAttachRef(finishedWork, finishedWork.return); - break; - } - // Unlike commitLayoutEffectsOnFiber, we don't need to handle HostRoot - // because this function only visits nodes that are inside an - // Offscreen fiber. - // case HostRoot: { - // ... - // } - - case HostHoistable: - case HostSingleton: - case HostComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // Renderers may schedule work to be done after host components are mounted - // (eg DOM renderer may schedule auto-focus for inputs and form controls). - // These effects should only be committed when components are first mounted, - // aka when there is no current/alternate. - - if ( - includeWorkInProgressEffects && - current === null && - flags & Update - ) { - commitHostComponentMount(finishedWork); - } // TODO: Check flags & Ref + commitHookLayoutEffects(finishedWork, Layout); + break; + } - safelyAttachRef(finishedWork, finishedWork.return); - break; - } + case ClassComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Check for LayoutStatic flag - case Profiler: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Figure out how Profiler updates should work with Offscreen + var instance = finishedWork.stateNode; - if (includeWorkInProgressEffects && flags & Update) { - commitProfilerUpdate(finishedWork, current); + if (typeof instance.componentDidMount === 'function') { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } + } // Commit any callbacks that would have fired while the component + // was hidden. - break; - } - case SuspenseComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Figure out how Suspense hydration callbacks should work + var updateQueue = finishedWork.updateQueue; - break; - } + if (updateQueue !== null) { + commitHiddenCallbacks(updateQueue, instance); + } // If this is newly finished work, check for setState callbacks - case OffscreenComponent: { - var offscreenState = finishedWork.memoizedState; - var isHidden = offscreenState !== null; - if (isHidden); - else { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - } // TODO: Check flags & Ref + if (includeWorkInProgressEffects && flags & Callback) { + commitClassCallbacks(finishedWork); + } // TODO: Check flags & RefStatic - safelyAttachRef(finishedWork, finishedWork.return); - break; - } - default: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - break; - } + safelyAttachRef(finishedWork, finishedWork.return); + break; } - } + // Unlike commitLayoutEffectsOnFiber, we don't need to handle HostRoot + // because this function only visits nodes that are inside an + // Offscreen fiber. + // case HostRoot: { + // ... + // } - function recursivelyTraverseReappearLayoutEffects( - finishedRoot, - parentFiber, - includeWorkInProgressEffects - ) { - // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - var childShouldIncludeWorkInProgressEffects = - includeWorkInProgressEffects && - (parentFiber.subtreeFlags & LayoutMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) + case HostHoistable: + case HostSingleton: + case HostComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // Renderers may schedule work to be done after host components are mounted + // (eg DOM renderer may schedule auto-focus for inputs and form controls). + // These effects should only be committed when components are first mounted, + // aka when there is no current/alternate. - var prevDebugFiber = getCurrentFiber(); - var child = parentFiber.child; + if (includeWorkInProgressEffects && current === null && flags & Update) { + commitHostComponentMount(finishedWork); + } // TODO: Check flags & Ref - while (child !== null) { - var current = child.alternate; - reappearLayoutEffects( - finishedRoot, - current, - child, - childShouldIncludeWorkInProgressEffects - ); - child = child.sibling; - } - setCurrentFiber(prevDebugFiber); - } + safelyAttachRef(finishedWork, finishedWork.return); + break; + } - function commitHookPassiveMountEffects(finishedWork, hookFlags) { - if (shouldProfile(finishedWork)) { - startPassiveEffectTimer(); + case Profiler: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Figure out how Profiler updates should work with Offscreen - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + if (includeWorkInProgressEffects && flags & Update) { + commitProfilerUpdate(finishedWork, current); } - recordPassiveEffectDuration(finishedWork); - } else { - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + break; } - } - function commitOffscreenPassiveMountEffects( - current, - finishedWork, - instance - ) { + case SuspenseComponent: { - var previousCache = null; - - if ( - current !== null && - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - previousCache = current.memoizedState.cachePool.pool; - } + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Figure out how Suspense hydration callbacks should work - var nextCache = null; - - if ( - finishedWork.memoizedState !== null && - finishedWork.memoizedState.cachePool !== null - ) { - nextCache = finishedWork.memoizedState.cachePool.pool; - } // Retain/release the cache used for pending (suspended) nodes. - // Note that this is only reached in the non-suspended/visible case: - // when the content is suspended/hidden, the retain/release occurs - // via the parent Suspense component (see case above). - - if (nextCache !== previousCache) { - if (nextCache != null) { - retainCache(nextCache); - } - - if (previousCache != null) { - releaseCache(previousCache); - } - } + break; } - } - function commitCachePassiveMountEffect(current, finishedWork) { + case OffscreenComponent: { - var previousCache = null; - - if (finishedWork.alternate !== null) { - previousCache = finishedWork.alternate.memoizedState.cache; - } + var offscreenState = finishedWork.memoizedState; + var isHidden = offscreenState !== null; - var nextCache = finishedWork.memoizedState.cache; // Retain/release the cache. In theory the cache component - // could be "borrowing" a cache instance owned by some parent, - // in which case we could avoid retaining/releasing. But it - // is non-trivial to determine when that is the case, so we - // always retain/release. + if (isHidden) ; else { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + } // TODO: Check flags & Ref - if (nextCache !== previousCache) { - retainCache(nextCache); - if (previousCache != null) { - releaseCache(previousCache); - } - } + safelyAttachRef(finishedWork, finishedWork.return); + break; } - } - function commitPassiveMountEffects( - root, - finishedWork, - committedLanes, - committedTransitions - ) { - setCurrentFiber(finishedWork); - commitPassiveMountOnFiber( - root, - finishedWork, - committedLanes, - committedTransitions - ); - resetCurrentFiber(); - } - - function recursivelyTraversePassiveMountEffects( - root, - parentFiber, - committedLanes, - committedTransitions - ) { - var prevDebugFiber = getCurrentFiber(); - - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; - - while (child !== null) { - setCurrentFiber(child); - commitPassiveMountOnFiber( - root, - child, - committedLanes, - committedTransitions - ); - child = child.sibling; - } + default: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + break; } + } +} - setCurrentFiber(prevDebugFiber); - } - - function commitPassiveMountOnFiber( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ) { - // When updating this function, also update reconnectPassiveEffects, which does - // most of the same things when an offscreen tree goes from hidden -> visible, - // or when toggling effects inside a hidden tree. - var flags = finishedWork.flags; +function recursivelyTraverseReappearLayoutEffects(finishedRoot, parentFiber, includeWorkInProgressEffects) { + // This function visits both newly finished work and nodes that were re-used + // from a previously committed tree. We cannot check non-static flags if the + // node was reused. + var childShouldIncludeWorkInProgressEffects = includeWorkInProgressEffects && (parentFiber.subtreeFlags & LayoutMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - - if (flags & Passive$1) { - commitHookPassiveMountEffects(finishedWork, Passive | HasEffect); - } + var prevDebugFiber = getCurrentFiber(); + var child = parentFiber.child; - break; - } + while (child !== null) { + var current = child.alternate; + reappearLayoutEffects(finishedRoot, current, child, childShouldIncludeWorkInProgressEffects); + child = child.sibling; + } - case HostRoot: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); + setCurrentFiber(prevDebugFiber); +} - if (flags & Passive$1) { - { - var previousCache = null; +function commitHookPassiveMountEffects(finishedWork, hookFlags) { + if (shouldProfile(finishedWork)) { + startPassiveEffectTimer(); - if (finishedWork.alternate !== null) { - previousCache = finishedWork.alternate.memoizedState.cache; - } + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - var nextCache = finishedWork.memoizedState.cache; // Retain/release the root cache. - // Note that on initial mount, previousCache and nextCache will be the same - // and this retain won't occur. To counter this, we instead retain the HostRoot's - // initial cache when creating the root itself (see createFiberRoot() in - // ReactFiberRoot.js). Subsequent updates that change the cache are reflected - // here, such that previous/next caches are retained correctly. + recordPassiveEffectDuration(finishedWork); + } else { + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - if (nextCache !== previousCache) { - retainCache(nextCache); +function commitOffscreenPassiveMountEffects(current, finishedWork, instance) { + { + var previousCache = null; - if (previousCache != null) { - releaseCache(previousCache); - } - } - } - } + if (current !== null && current.memoizedState !== null && current.memoizedState.cachePool !== null) { + previousCache = current.memoizedState.cachePool.pool; + } - break; - } + var nextCache = null; - case LegacyHiddenComponent: { - break; - } + if (finishedWork.memoizedState !== null && finishedWork.memoizedState.cachePool !== null) { + nextCache = finishedWork.memoizedState.cachePool.pool; + } // Retain/release the cache used for pending (suspended) nodes. + // Note that this is only reached in the non-suspended/visible case: + // when the content is suspended/hidden, the retain/release occurs + // via the parent Suspense component (see case above). - case OffscreenComponent: { - // TODO: Pass `current` as argument to this function - var _instance3 = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; - if (isHidden) { - if (_instance3._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } else { - if (finishedWork.mode & ConcurrentMode) { - // The effects are currently disconnected. Since the tree is hidden, - // don't connect them. This also applies to the initial render. - { - // "Atomic" effects are ones that need to fire on every commit, - // even during pre-rendering. An example is updating the reference - // count on cache instances. - recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - finishedWork - ); - } - } else { - // Legacy Mode: Fire the effects even if the tree is hidden. - _instance3._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } - } - } else { - // Tree is visible - if (_instance3._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } else { - // The effects are currently disconnected. Reconnect them, while also - // firing effects inside newly mounted trees. This also applies to - // the initial render. - _instance3._visibility |= OffscreenPassiveEffectsConnected; - var includeWorkInProgressEffects = - (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } - } + if (nextCache !== previousCache) { + if (nextCache != null) { + retainCache(nextCache); + } - if (flags & Passive$1) { - var _current = finishedWork.alternate; - commitOffscreenPassiveMountEffects(_current, finishedWork); - } + if (previousCache != null) { + releaseCache(previousCache); + } + } + } +} - break; - } +function commitCachePassiveMountEffect(current, finishedWork) { + { + var previousCache = null; - case CacheComponent: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current2 = finishedWork.alternate; - commitCachePassiveMountEffect(_current2, finishedWork); - } + if (finishedWork.alternate !== null) { + previousCache = finishedWork.alternate.memoizedState.cache; + } - break; - } + var nextCache = finishedWork.memoizedState.cache; // Retain/release the cache. In theory the cache component + // could be "borrowing" a cache instance owned by some parent, + // in which case we could avoid retaining/releasing. But it + // is non-trivial to determine when that is the case, so we + // always retain/release. - case TracingMarkerComponent: + if (nextCache !== previousCache) { + retainCache(nextCache); - default: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - break; - } + if (previousCache != null) { + releaseCache(previousCache); } } + } +} - function recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - parentFiber, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ) { - // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - var childShouldIncludeWorkInProgressEffects = - includeWorkInProgressEffects && - (parentFiber.subtreeFlags & PassiveMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) +function commitPassiveMountEffects(root, finishedWork, committedLanes, committedTransitions) { + setCurrentFiber(finishedWork); + commitPassiveMountOnFiber(root, finishedWork, committedLanes, committedTransitions); + resetCurrentFiber(); +} - var prevDebugFiber = getCurrentFiber(); - var child = parentFiber.child; +function recursivelyTraversePassiveMountEffects(root, parentFiber, committedLanes, committedTransitions) { + var prevDebugFiber = getCurrentFiber(); - while (child !== null) { - reconnectPassiveEffects( - finishedRoot, - child, - committedLanes, - committedTransitions, - childShouldIncludeWorkInProgressEffects - ); - child = child.sibling; - } + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; - setCurrentFiber(prevDebugFiber); + while (child !== null) { + setCurrentFiber(child); + commitPassiveMountOnFiber(root, child, committedLanes, committedTransitions); + child = child.sibling; } + } + + setCurrentFiber(prevDebugFiber); +} - function reconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - includeWorkInProgressEffects - ) { - var flags = finishedWork.flags; +function commitPassiveMountOnFiber(finishedRoot, finishedWork, committedLanes, committedTransitions) { + // When updating this function, also update reconnectPassiveEffects, which does + // most of the same things when an offscreen tree goes from hidden -> visible, + // or when toggling effects inside a hidden tree. + var flags = finishedWork.flags; - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); // TODO: Check for PassiveStatic flag - - commitHookPassiveMountEffects(finishedWork, Passive); - break; - } - // Unlike commitPassiveMountOnFiber, we don't need to handle HostRoot - // because this function only visits nodes that are inside an - // Offscreen fiber. - // case HostRoot: { - // ... - // } - - case LegacyHiddenComponent: { - break; + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + + if (flags & Passive$1) { + commitHookPassiveMountEffects(finishedWork, Passive | HasEffect); } - case OffscreenComponent: { - var _instance4 = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; + break; + } - if (isHidden) { - if (_instance4._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } else { - if (finishedWork.mode & ConcurrentMode) { - // The effects are currently disconnected. Since the tree is hidden, - // don't connect them. This also applies to the initial render. - { - // "Atomic" effects are ones that need to fire on every commit, - // even during pre-rendering. An example is updating the reference - // count on cache instances. - recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - finishedWork - ); - } - } else { - // Legacy Mode: Fire the effects even if the tree is hidden. - _instance4._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); + case HostRoot: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + + if (flags & Passive$1) { + { + var previousCache = null; + + if (finishedWork.alternate !== null) { + previousCache = finishedWork.alternate.memoizedState.cache; + } + + var nextCache = finishedWork.memoizedState.cache; // Retain/release the root cache. + // Note that on initial mount, previousCache and nextCache will be the same + // and this retain won't occur. To counter this, we instead retain the HostRoot's + // initial cache when creating the root itself (see createFiberRoot() in + // ReactFiberRoot.js). Subsequent updates that change the cache are reflected + // here, such that previous/next caches are retained correctly. + + if (nextCache !== previousCache) { + retainCache(nextCache); + + if (previousCache != null) { + releaseCache(previousCache); } } - } else { - // Tree is visible - // Since we're already inside a reconnecting tree, it doesn't matter - // whether the effects are currently connected. In either case, we'll - // continue traversing the tree and firing all the effects. - // - // We do need to set the "connected" flag on the instance, though. - _instance4._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); } + } - if (includeWorkInProgressEffects && flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current3 = finishedWork.alternate; - commitOffscreenPassiveMountEffects(_current3, finishedWork); - } + break; + } - break; - } + case LegacyHiddenComponent: + { - case CacheComponent: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - - if (includeWorkInProgressEffects && flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current4 = finishedWork.alternate; - commitCachePassiveMountEffect(_current4, finishedWork); - } + break; + } - break; + case OffscreenComponent: + { + // TODO: Pass `current` as argument to this function + var _instance3 = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; + + if (isHidden) { + if (_instance3._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + } else { + if (finishedWork.mode & ConcurrentMode) { + // The effects are currently disconnected. Since the tree is hidden, + // don't connect them. This also applies to the initial render. + { + // "Atomic" effects are ones that need to fire on every commit, + // even during pre-rendering. An example is updating the reference + // count on cache instances. + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + } + } else { + // Legacy Mode: Fire the effects even if the tree is hidden. + _instance3._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + } + } + } else { + // Tree is visible + if (_instance3._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + } else { + // The effects are currently disconnected. Reconnect them, while also + // firing effects inside newly mounted trees. This also applies to + // the initial render. + _instance3._visibility |= OffscreenPassiveEffectsConnected; + var includeWorkInProgressEffects = (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + } } - case TracingMarkerComponent: - - default: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - break; + if (flags & Passive$1) { + var _current = finishedWork.alternate; + commitOffscreenPassiveMountEffects(_current, finishedWork); } - } - } - function recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - parentFiber, - committedLanes, - committedTransitions - ) { - // "Atomic" effects are ones that need to fire on every commit, even during - // pre-rendering. We call this function when traversing a hidden tree whose - // regular effects are currently disconnected. - var prevDebugFiber = getCurrentFiber(); // TODO: Add special flag for atomic effects + break; + } - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; + case CacheComponent: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); - while (child !== null) { - setCurrentFiber(child); - commitAtomicPassiveEffects(finishedRoot, child); - child = child.sibling; + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current2 = finishedWork.alternate; + commitCachePassiveMountEffect(_current2, finishedWork); } + + break; } - setCurrentFiber(prevDebugFiber); - } + case TracingMarkerComponent: - function commitAtomicPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ) { - // "Atomic" effects are ones that need to fire on every commit, even during - // pre-rendering. We call this function when traversing a hidden tree whose - // regular effects are currently disconnected. - var flags = finishedWork.flags; + default: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + break; + } + } +} - switch (finishedWork.tag) { - case OffscreenComponent: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); +function recursivelyTraverseReconnectPassiveEffects(finishedRoot, parentFiber, committedLanes, committedTransitions, includeWorkInProgressEffects) { + // This function visits both newly finished work and nodes that were re-used + // from a previously committed tree. We cannot check non-static flags if the + // node was reused. + var childShouldIncludeWorkInProgressEffects = includeWorkInProgressEffects && (parentFiber.subtreeFlags & PassiveMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var current = finishedWork.alternate; - commitOffscreenPassiveMountEffects(current, finishedWork); - } + var prevDebugFiber = getCurrentFiber(); + var child = parentFiber.child; - break; - } + while (child !== null) { + reconnectPassiveEffects(finishedRoot, child, committedLanes, committedTransitions, childShouldIncludeWorkInProgressEffects); + child = child.sibling; + } - case CacheComponent: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + setCurrentFiber(prevDebugFiber); +} - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current5 = finishedWork.alternate; - commitCachePassiveMountEffect(_current5, finishedWork); - } +function reconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, // This function visits both newly finished work and nodes that were re-used +// from a previously committed tree. We cannot check non-static flags if the +// node was reused. +includeWorkInProgressEffects) { + var flags = finishedWork.flags; - break; - } + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); // TODO: Check for PassiveStatic flag - default: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - break; - } + commitHookPassiveMountEffects(finishedWork, Passive); + break; } - } + // Unlike commitPassiveMountOnFiber, we don't need to handle HostRoot + // because this function only visits nodes that are inside an + // Offscreen fiber. + // case HostRoot: { + // ... + // } - function commitPassiveUnmountEffects(finishedWork) { - setCurrentFiber(finishedWork); - commitPassiveUnmountOnFiber(finishedWork); - resetCurrentFiber(); - } // If we're inside a brand new tree, or a tree that was already visible, then we - // should only suspend host components that have a ShouldSuspendCommit flag. - // Components without it haven't changed since the last commit, so we can skip - // over those. - // - // When we enter a tree that is being revealed (going from hidden -> visible), - // we need to suspend _any_ component that _may_ suspend. Even if they're - // already in the "current" tree. Because their visibility has changed, the - // browser may not have prerendered them yet. So we check the MaySuspendCommit - // flag instead. - - var suspenseyCommitFlag = ShouldSuspendCommit; - function accumulateSuspenseyCommit(finishedWork) { - accumulateSuspenseyCommitOnFiber(finishedWork); - } - - function recursivelyAccumulateSuspenseyCommit(parentFiber) { - if (parentFiber.subtreeFlags & suspenseyCommitFlag) { - var child = parentFiber.child; + case LegacyHiddenComponent: + { - while (child !== null) { - accumulateSuspenseyCommitOnFiber(child); - child = child.sibling; - } + break; } - } - function accumulateSuspenseyCommitOnFiber(fiber) { - switch (fiber.tag) { - case HostHoistable: { - recursivelyAccumulateSuspenseyCommit(fiber); + case OffscreenComponent: + { + var _instance4 = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; - if (fiber.flags & suspenseyCommitFlag) { - if (fiber.memoizedState !== null) { - suspendResource(); + if (isHidden) { + if (_instance4._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + } else { + if (finishedWork.mode & ConcurrentMode) { + // The effects are currently disconnected. Since the tree is hidden, + // don't connect them. This also applies to the initial render. + { + // "Atomic" effects are ones that need to fire on every commit, + // even during pre-rendering. An example is updating the reference + // count on cache instances. + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + } + } else { + // Legacy Mode: Fire the effects even if the tree is hidden. + _instance4._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); } } - - break; + } else { + // Tree is visible + // Since we're already inside a reconnecting tree, it doesn't matter + // whether the effects are currently connected. In either case, we'll + // continue traversing the tree and firing all the effects. + // + // We do need to set the "connected" flag on the instance, though. + _instance4._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); } - case HostComponent: { - recursivelyAccumulateSuspenseyCommit(fiber); - - break; + if (includeWorkInProgressEffects && flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current3 = finishedWork.alternate; + commitOffscreenPassiveMountEffects(_current3, finishedWork); } - case HostRoot: - case HostPortal: { - { - recursivelyAccumulateSuspenseyCommit(fiber); - } + break; + } - break; + case CacheComponent: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + + if (includeWorkInProgressEffects && flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current4 = finishedWork.alternate; + commitCachePassiveMountEffect(_current4, finishedWork); } - case OffscreenComponent: { - var isHidden = fiber.memoizedState !== null; + break; + } - if (isHidden); - else { - var current = fiber.alternate; - var wasHidden = current !== null && current.memoizedState !== null; + case TracingMarkerComponent: - if (wasHidden) { - // This tree is being revealed. Visit all newly visible suspensey - // instances, even if they're in the current tree. - var prevFlags = suspenseyCommitFlag; - suspenseyCommitFlag = MaySuspendCommit; - recursivelyAccumulateSuspenseyCommit(fiber); - suspenseyCommitFlag = prevFlags; - } else { - recursivelyAccumulateSuspenseyCommit(fiber); - } - } + default: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + break; + } + } +} - break; - } +function recursivelyTraverseAtomicPassiveEffects(finishedRoot, parentFiber, committedLanes, committedTransitions) { + // "Atomic" effects are ones that need to fire on every commit, even during + // pre-rendering. We call this function when traversing a hidden tree whose + // regular effects are currently disconnected. + var prevDebugFiber = getCurrentFiber(); // TODO: Add special flag for atomic effects - default: { - recursivelyAccumulateSuspenseyCommit(fiber); - } - } - } + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; - function detachAlternateSiblings(parentFiber) { - // A fiber was deleted from this parent fiber, but it's still part of the - // previous (alternate) parent fiber's list of children. Because children - // are a linked list, an earlier sibling that's still alive will be - // connected to the deleted fiber via its `alternate`: - // - // live fiber --alternate--> previous live fiber --sibling--> deleted - // fiber - // - // We can't disconnect `alternate` on nodes that haven't been deleted yet, - // but we can disconnect the `sibling` and `child` pointers. - var previousFiber = parentFiber.alternate; + while (child !== null) { + setCurrentFiber(child); + commitAtomicPassiveEffects(finishedRoot, child); + child = child.sibling; + } + } - if (previousFiber !== null) { - var detachedChild = previousFiber.child; + setCurrentFiber(prevDebugFiber); +} - if (detachedChild !== null) { - previousFiber.child = null; +function commitAtomicPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions) { + // "Atomic" effects are ones that need to fire on every commit, even during + // pre-rendering. We call this function when traversing a hidden tree whose + // regular effects are currently disconnected. + var flags = finishedWork.flags; - do { - // $FlowFixMe[incompatible-use] found when upgrading Flow - var detachedSibling = detachedChild.sibling; // $FlowFixMe[incompatible-use] found when upgrading Flow + switch (finishedWork.tag) { + case OffscreenComponent: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - detachedChild.sibling = null; - detachedChild = detachedSibling; - } while (detachedChild !== null); + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var current = finishedWork.alternate; + commitOffscreenPassiveMountEffects(current, finishedWork); } - } - } - function commitHookPassiveUnmountEffects( - finishedWork, - nearestMountedAncestor, - hookFlags - ) { - if (shouldProfile(finishedWork)) { - startPassiveEffectTimer(); - commitHookEffectListUnmount( - hookFlags, - finishedWork, - nearestMountedAncestor - ); - recordPassiveEffectDuration(finishedWork); - } else { - commitHookEffectListUnmount( - hookFlags, - finishedWork, - nearestMountedAncestor - ); + break; } - } - function recursivelyTraversePassiveUnmountEffects(parentFiber) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects have fired. - var deletions = parentFiber.deletions; - - if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; // TODO: Convert this to use recursion + case CacheComponent: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - nextEffect = childToDelete; - commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - childToDelete, - parentFiber - ); - } + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current5 = finishedWork.alternate; + commitCachePassiveMountEffect(_current5, finishedWork); } - detachAlternateSiblings(parentFiber); + break; } - var prevDebugFiber = getCurrentFiber(); // TODO: Split PassiveMask into separate masks for mount and unmount? + default: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + break; + } + } +} - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; +function commitPassiveUnmountEffects(finishedWork) { + setCurrentFiber(finishedWork); + commitPassiveUnmountOnFiber(finishedWork); + resetCurrentFiber(); +} // If we're inside a brand new tree, or a tree that was already visible, then we +// should only suspend host components that have a ShouldSuspendCommit flag. +// Components without it haven't changed since the last commit, so we can skip +// over those. +// +// When we enter a tree that is being revealed (going from hidden -> visible), +// we need to suspend _any_ component that _may_ suspend. Even if they're +// already in the "current" tree. Because their visibility has changed, the +// browser may not have prerendered them yet. So we check the MaySuspendCommit +// flag instead. + +var suspenseyCommitFlag = ShouldSuspendCommit; +function accumulateSuspenseyCommit(finishedWork) { + accumulateSuspenseyCommitOnFiber(finishedWork); +} - while (child !== null) { - setCurrentFiber(child); - commitPassiveUnmountOnFiber(child); - child = child.sibling; - } - } +function recursivelyAccumulateSuspenseyCommit(parentFiber) { + if (parentFiber.subtreeFlags & suspenseyCommitFlag) { + var child = parentFiber.child; - setCurrentFiber(prevDebugFiber); + while (child !== null) { + accumulateSuspenseyCommitOnFiber(child); + child = child.sibling; } + } +} - function commitPassiveUnmountOnFiber(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraversePassiveUnmountEffects(finishedWork); +function accumulateSuspenseyCommitOnFiber(fiber) { + switch (fiber.tag) { + case HostHoistable: + { + recursivelyAccumulateSuspenseyCommit(fiber); - if (finishedWork.flags & Passive$1) { - commitHookPassiveUnmountEffects( - finishedWork, - finishedWork.return, - Passive | HasEffect - ); + if (fiber.flags & suspenseyCommitFlag) { + if (fiber.memoizedState !== null) { + suspendResource(); } - - break; } - case OffscreenComponent: { - var instance = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; - - if ( - isHidden && - instance._visibility & OffscreenPassiveEffectsConnected && // For backwards compatibility, don't unmount when a tree suspends. In - // the future we may change this to unmount after a delay. - (finishedWork.return === null || - finishedWork.return.tag !== SuspenseComponent) - ) { - // The effects are currently connected. Disconnect them. - // TODO: Add option or heuristic to delay before disconnecting the - // effects. Then if the tree reappears before the delay has elapsed, we - // can skip toggling the effects entirely. - instance._visibility &= ~OffscreenPassiveEffectsConnected; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - } else { - recursivelyTraversePassiveUnmountEffects(finishedWork); - } + break; + } - break; - } + case HostComponent: + { + recursivelyAccumulateSuspenseyCommit(fiber); - default: { - recursivelyTraversePassiveUnmountEffects(finishedWork); - break; + break; + } + + case HostRoot: + case HostPortal: + { + { + recursivelyAccumulateSuspenseyCommit(fiber); } + + break; } - } - function recursivelyTraverseDisconnectPassiveEffects(parentFiber) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects have fired. - var deletions = parentFiber.deletions; + case OffscreenComponent: + { + var isHidden = fiber.memoizedState !== null; - if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; // TODO: Convert this to use recursion + if (isHidden) ; else { + var current = fiber.alternate; + var wasHidden = current !== null && current.memoizedState !== null; - nextEffect = childToDelete; - commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - childToDelete, - parentFiber - ); + if (wasHidden) { + // This tree is being revealed. Visit all newly visible suspensey + // instances, even if they're in the current tree. + var prevFlags = suspenseyCommitFlag; + suspenseyCommitFlag = MaySuspendCommit; + recursivelyAccumulateSuspenseyCommit(fiber); + suspenseyCommitFlag = prevFlags; + } else { + recursivelyAccumulateSuspenseyCommit(fiber); } } - detachAlternateSiblings(parentFiber); + break; } - var prevDebugFiber = getCurrentFiber(); // TODO: Check PassiveStatic flag - - var child = parentFiber.child; - - while (child !== null) { - setCurrentFiber(child); - disconnectPassiveEffect(child); - child = child.sibling; + default: + { + recursivelyAccumulateSuspenseyCommit(fiber); } + } +} - setCurrentFiber(prevDebugFiber); - } +function detachAlternateSiblings(parentFiber) { + // A fiber was deleted from this parent fiber, but it's still part of the + // previous (alternate) parent fiber's list of children. Because children + // are a linked list, an earlier sibling that's still alive will be + // connected to the deleted fiber via its `alternate`: + // + // live fiber --alternate--> previous live fiber --sibling--> deleted + // fiber + // + // We can't disconnect `alternate` on nodes that haven't been deleted yet, + // but we can disconnect the `sibling` and `child` pointers. + var previousFiber = parentFiber.alternate; + + if (previousFiber !== null) { + var detachedChild = previousFiber.child; + + if (detachedChild !== null) { + previousFiber.child = null; - function disconnectPassiveEffect(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - // TODO: Check PassiveStatic flag - commitHookPassiveUnmountEffects( - finishedWork, - finishedWork.return, - Passive - ); // When disconnecting passive effects, we fire the effects in the same - // order as during a deletiong: parent before child + do { + // $FlowFixMe[incompatible-use] found when upgrading Flow + var detachedSibling = detachedChild.sibling; // $FlowFixMe[incompatible-use] found when upgrading Flow - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - break; - } + detachedChild.sibling = null; + detachedChild = detachedSibling; + } while (detachedChild !== null); + } + } +} - case OffscreenComponent: { - var instance = finishedWork.stateNode; +function commitHookPassiveUnmountEffects(finishedWork, nearestMountedAncestor, hookFlags) { + if (shouldProfile(finishedWork)) { + startPassiveEffectTimer(); + commitHookEffectListUnmount(hookFlags, finishedWork, nearestMountedAncestor); + recordPassiveEffectDuration(finishedWork); + } else { + commitHookEffectListUnmount(hookFlags, finishedWork, nearestMountedAncestor); + } +} - if (instance._visibility & OffscreenPassiveEffectsConnected) { - instance._visibility &= ~OffscreenPassiveEffectsConnected; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - } +function recursivelyTraversePassiveUnmountEffects(parentFiber) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects have fired. + var deletions = parentFiber.deletions; - break; - } + if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; // TODO: Convert this to use recursion - default: { - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - break; - } + nextEffect = childToDelete; + commitPassiveUnmountEffectsInsideOfDeletedTree_begin(childToDelete, parentFiber); } } - function commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - deletedSubtreeRoot, - nearestMountedAncestor - ) { - while (nextEffect !== null) { - var fiber = nextEffect; // Deletion effects fire in parent -> child order - // TODO: Check if fiber has a PassiveStatic flag + detachAlternateSiblings(parentFiber); + } - setCurrentFiber(fiber); - commitPassiveUnmountInsideDeletedTreeOnFiber( - fiber, - nearestMountedAncestor - ); - resetCurrentFiber(); - var child = fiber.child; // TODO: Only traverse subtree if it has a PassiveStatic flag. + var prevDebugFiber = getCurrentFiber(); // TODO: Split PassiveMask into separate masks for mount and unmount? - if (child !== null) { - child.return = fiber; - nextEffect = child; - } else { - commitPassiveUnmountEffectsInsideOfDeletedTree_complete( - deletedSubtreeRoot - ); - } - } + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; + + while (child !== null) { + setCurrentFiber(child); + commitPassiveUnmountOnFiber(child); + child = child.sibling; } + } - function commitPassiveUnmountEffectsInsideOfDeletedTree_complete( - deletedSubtreeRoot - ) { - while (nextEffect !== null) { - var fiber = nextEffect; - var sibling = fiber.sibling; - var returnFiber = fiber.return; // Recursively traverse the entire deleted tree and clean up fiber fields. - // This is more aggressive than ideal, and the long term goal is to only - // have to detach the deleted tree at the root. + setCurrentFiber(prevDebugFiber); +} - detachFiberAfterEffects(fiber); +function commitPassiveUnmountOnFiber(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraversePassiveUnmountEffects(finishedWork); - if (fiber === deletedSubtreeRoot) { - nextEffect = null; - return; + if (finishedWork.flags & Passive$1) { + commitHookPassiveUnmountEffects(finishedWork, finishedWork.return, Passive | HasEffect); } - if (sibling !== null) { - sibling.return = returnFiber; - nextEffect = sibling; - return; + break; + } + + case OffscreenComponent: + { + var instance = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; + + if (isHidden && instance._visibility & OffscreenPassiveEffectsConnected && ( // For backwards compatibility, don't unmount when a tree suspends. In + // the future we may change this to unmount after a delay. + finishedWork.return === null || finishedWork.return.tag !== SuspenseComponent)) { + // The effects are currently connected. Disconnect them. + // TODO: Add option or heuristic to delay before disconnecting the + // effects. Then if the tree reappears before the delay has elapsed, we + // can skip toggling the effects entirely. + instance._visibility &= ~OffscreenPassiveEffectsConnected; + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + } else { + recursivelyTraversePassiveUnmountEffects(finishedWork); } - nextEffect = returnFiber; + break; + } + + default: + { + recursivelyTraversePassiveUnmountEffects(finishedWork); + break; + } + } +} + +function recursivelyTraverseDisconnectPassiveEffects(parentFiber) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects have fired. + var deletions = parentFiber.deletions; + + if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; // TODO: Convert this to use recursion + + nextEffect = childToDelete; + commitPassiveUnmountEffectsInsideOfDeletedTree_begin(childToDelete, parentFiber); } } - function commitPassiveUnmountInsideDeletedTreeOnFiber( - current, - nearestMountedAncestor - ) { - switch (current.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - commitHookPassiveUnmountEffects( - current, - nearestMountedAncestor, - Passive - ); - break; - } - // TODO: run passive unmount effects when unmounting a root. - // Because passive unmount effects are not currently run, - // the cache instance owned by the root will never be freed. - // When effects are run, the cache should be freed here: - // case HostRoot: { - // if (enableCache) { - // const cache = current.memoizedState.cache; - // releaseCache(cache); - // } - // break; - // } - - case LegacyHiddenComponent: - case OffscreenComponent: { - { - if ( - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - var cache = current.memoizedState.cachePool.pool; // Retain/release the cache used for pending (suspended) nodes. - // Note that this is only reached in the non-suspended/visible case: - // when the content is suspended/hidden, the retain/release occurs - // via the parent Suspense component (see case above). - - if (cache != null) { - retainCache(cache); - } - } - } + detachAlternateSiblings(parentFiber); + } - break; - } + var prevDebugFiber = getCurrentFiber(); // TODO: Check PassiveStatic flag - case SuspenseComponent: { - break; - } + var child = parentFiber.child; - case CacheComponent: { - { - var _cache = current.memoizedState.cache; - releaseCache(_cache); - } + while (child !== null) { + setCurrentFiber(child); + disconnectPassiveEffect(child); + child = child.sibling; + } - break; + setCurrentFiber(prevDebugFiber); +} + +function disconnectPassiveEffect(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + // TODO: Check PassiveStatic flag + commitHookPassiveUnmountEffects(finishedWork, finishedWork.return, Passive); // When disconnecting passive effects, we fire the effects in the same + // order as during a deletiong: parent before child + + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + break; + } + + case OffscreenComponent: + { + var instance = finishedWork.stateNode; + + if (instance._visibility & OffscreenPassiveEffectsConnected) { + instance._visibility &= ~OffscreenPassiveEffectsConnected; + recursivelyTraverseDisconnectPassiveEffects(finishedWork); } + + break; } - } - function invokeLayoutEffectMountInDEV(fiber) { + default: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListMount(Layout | HasEffect, fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + break; + } + } +} - break; - } +function commitPassiveUnmountEffectsInsideOfDeletedTree_begin(deletedSubtreeRoot, nearestMountedAncestor) { + while (nextEffect !== null) { + var fiber = nextEffect; // Deletion effects fire in parent -> child order + // TODO: Check if fiber has a PassiveStatic flag - case ClassComponent: { - var instance = fiber.stateNode; + setCurrentFiber(fiber); + commitPassiveUnmountInsideDeletedTreeOnFiber(fiber, nearestMountedAncestor); + resetCurrentFiber(); + var child = fiber.child; // TODO: Only traverse subtree if it has a PassiveStatic flag. - if (typeof instance.componentDidMount === "function") { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } - } + if (child !== null) { + child.return = fiber; + nextEffect = child; + } else { + commitPassiveUnmountEffectsInsideOfDeletedTree_complete(deletedSubtreeRoot); + } + } +} - break; - } - } - } +function commitPassiveUnmountEffectsInsideOfDeletedTree_complete(deletedSubtreeRoot) { + while (nextEffect !== null) { + var fiber = nextEffect; + var sibling = fiber.sibling; + var returnFiber = fiber.return; // Recursively traverse the entire deleted tree and clean up fiber fields. + // This is more aggressive than ideal, and the long term goal is to only + // have to detach the deleted tree at the root. + + detachFiberAfterEffects(fiber); + + if (fiber === deletedSubtreeRoot) { + nextEffect = null; + return; + } + + if (sibling !== null) { + sibling.return = returnFiber; + nextEffect = sibling; + return; } - function invokePassiveEffectMountInDEV(fiber) { + nextEffect = returnFiber; + } +} + +function commitPassiveUnmountInsideDeletedTreeOnFiber(current, nearestMountedAncestor) { + switch (current.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + commitHookPassiveUnmountEffects(current, nearestMountedAncestor, Passive); + break; + } + // TODO: run passive unmount effects when unmounting a root. + // Because passive unmount effects are not currently run, + // the cache instance owned by the root will never be freed. + // When effects are run, the cache should be freed here: + // case HostRoot: { + // if (enableCache) { + // const cache = current.memoizedState.cache; + // releaseCache(cache); + // } + // break; + // } + + case LegacyHiddenComponent: + case OffscreenComponent: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListMount(Passive | HasEffect, fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); + { + if (current.memoizedState !== null && current.memoizedState.cachePool !== null) { + var cache = current.memoizedState.cachePool.pool; // Retain/release the cache used for pending (suspended) nodes. + // Note that this is only reached in the non-suspended/visible case: + // when the content is suspended/hidden, the retain/release occurs + // via the parent Suspense component (see case above). + + if (cache != null) { + retainCache(cache); } - - break; } } + + break; } - } - function invokeLayoutEffectUnmountInDEV(fiber) { + case SuspenseComponent: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListUnmount( - Layout | HasEffect, - fiber, - fiber.return - ); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } - break; - } + break; + } - case ClassComponent: { - var instance = fiber.stateNode; + case CacheComponent: + { + { + var _cache = current.memoizedState.cache; + releaseCache(_cache); + } - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount(fiber, fiber.return, instance); - } + break; + } + } +} - break; +function invokeLayoutEffectMountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListMount(Layout | HasEffect, fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); } + + break; } - } - } - function invokePassiveEffectUnmountInDEV(fiber) { - { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { + case ClassComponent: + { + var instance = fiber.stateNode; + + if (typeof instance.componentDidMount === 'function') { try { - commitHookEffectListUnmount( - Passive | HasEffect, - fiber, - fiber.return - ); + instance.componentDidMount(); } catch (error) { captureCommitPhaseError(fiber, fiber.return, error); } } - } - } - } - function getCacheForType(resourceType) { - var cache = readContext(CacheContext); - var cacheForType = cache.data.get(resourceType); - - if (cacheForType === undefined) { - cacheForType = resourceType(); - cache.data.set(resourceType, cacheForType); - } - - return cacheForType; + break; + } } + } +} - var DefaultCacheDispatcher = { - getCacheForType: getCacheForType - }; +function invokePassiveEffectMountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListMount(Passive | HasEffect, fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } - if (typeof Symbol === "function" && Symbol.for) { - var symbolFor = Symbol.for; - symbolFor("selector.component"); - symbolFor("selector.has_pseudo_class"); - symbolFor("selector.role"); - symbolFor("selector.test_id"); - symbolFor("selector.text"); + break; + } } + } +} - function isLegacyActEnvironment(fiber) { - { - // Legacy mode. We preserve the behavior of React 17's act. It assumes an - // act environment whenever `jest` is defined, but you can still turn off - // spurious warnings by setting IS_REACT_ACT_ENVIRONMENT explicitly - // to false. - var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global - typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" // $FlowFixMe[cannot-resolve-name] - ? IS_REACT_ACT_ENVIRONMENT - : undefined; // $FlowFixMe[cannot-resolve-name] - Flow doesn't know about jest +function invokeLayoutEffectUnmountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListUnmount(Layout | HasEffect, fiber, fiber.return); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } - var jestIsDefined = typeof jest !== "undefined"; - return jestIsDefined && isReactActEnvironmentGlobal !== false; - } - } - function isConcurrentActEnvironment() { - { - var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global - typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" // $FlowFixMe[cannot-resolve-name] - ? IS_REACT_ACT_ENVIRONMENT - : undefined; - - if ( - !isReactActEnvironmentGlobal && - ReactSharedInternals.actQueue !== null - ) { - // TODO: Include link to relevant documentation page. - error( - "The current testing environment is not configured to support " + - "act(...)" - ); + break; } - return isReactActEnvironmentGlobal; - } - } - - var PossiblyWeakMap = typeof WeakMap === "function" ? WeakMap : Map; - var NoContext = - /* */ - 0; - var BatchedContext = - /* */ - 1; - var RenderContext = - /* */ - 2; - var CommitContext = - /* */ - 4; - var RootInProgress = 0; - var RootFatalErrored = 1; - var RootErrored = 2; - var RootSuspended = 3; - var RootSuspendedWithDelay = 4; - var RootCompleted = 5; - var RootDidNotComplete = 6; // Describes where we are in the React execution stack - - var executionContext = NoContext; // The root we're working on - - var workInProgressRoot = null; // The fiber we're working on - - var workInProgress = null; // The lanes we're rendering - - var workInProgressRootRenderLanes = NoLanes; - var NotSuspended = 0; - var SuspendedOnError = 1; - var SuspendedOnData = 2; - var SuspendedOnImmediate = 3; - var SuspendedOnInstance = 4; - var SuspendedOnInstanceAndReadyToContinue = 5; - var SuspendedOnDeprecatedThrowPromise = 6; - var SuspendedAndReadyToContinue = 7; - var SuspendedOnHydration = 8; // When this is true, the work-in-progress fiber just suspended (or errored) and - // we've yet to unwind the stack. In some cases, we may yield to the main thread - // after this happens. If the fiber is pinged before we resume, we can retry - // immediately instead of unwinding the stack. - - var workInProgressSuspendedReason = NotSuspended; - var workInProgressThrownValue = null; // Whether a ping listener was attached during this render. This is slightly - // different that whether something suspended, because we don't add multiple - // listeners to a promise we've already seen (per root and lane). - - var workInProgressRootDidAttachPingListener = false; // A contextual version of workInProgressRootRenderLanes. It is a superset of - // the lanes that we started working on at the root. When we enter a subtree - // that is currently hidden, we add the lanes that would have committed if - // the hidden tree hadn't been deferred. This is modified by the - // HiddenContext module. - // - // Most things in the work loop should deal with workInProgressRootRenderLanes. - // Most things in begin/complete phases should deal with entangledRenderLanes. + case ClassComponent: + { + var instance = fiber.stateNode; - var entangledRenderLanes = NoLanes; // Whether to root completed, errored, suspended, etc. + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(fiber, fiber.return, instance); + } - var workInProgressRootExitStatus = RootInProgress; // The work left over by components that were visited during this render. Only - // includes unprocessed updates, not work in bailed out children. + break; + } + } + } +} - var workInProgressRootSkippedLanes = NoLanes; // Lanes that were updated (in an interleaved event) during this render. +function invokePassiveEffectUnmountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListUnmount(Passive | HasEffect, fiber, fiber.return); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } + } + } + } +} - var workInProgressRootInterleavedUpdatedLanes = NoLanes; // Lanes that were updated during the render phase (*not* an interleaved event). +function getCacheForType(resourceType) { - var workInProgressRootPingedLanes = NoLanes; // If this lane scheduled deferred work, this is the lane of the deferred task. + var cache = readContext(CacheContext); + var cacheForType = cache.data.get(resourceType); - var workInProgressDeferredLane = NoLane; // Errors that are thrown during the render phase. + if (cacheForType === undefined) { + cacheForType = resourceType(); + cache.data.set(resourceType, cacheForType); + } - var workInProgressRootConcurrentErrors = null; // These are errors that we recovered from without surfacing them to the UI. - // We will log them once the tree commits. + return cacheForType; +} - var workInProgressRootRecoverableErrors = null; // Tracks when an update occurs during the render phase. +var DefaultCacheDispatcher = { + getCacheForType: getCacheForType +}; + +if (typeof Symbol === 'function' && Symbol.for) { + var symbolFor = Symbol.for; + symbolFor('selector.component'); + symbolFor('selector.has_pseudo_class'); + symbolFor('selector.role'); + symbolFor('selector.test_id'); + symbolFor('selector.text'); +} - var workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Thacks when an update occurs during the commit phase. It's a separate - // filled in with the resolved UI. This lets us throttle the appearance of new - // content as it streams in, to minimize jank. - // TODO: Think of a better name for this variable? +function isLegacyActEnvironment(fiber) { + { + // Legacy mode. We preserve the behavior of React 17's act. It assumes an + // act environment whenever `jest` is defined, but you can still turn off + // spurious warnings by setting IS_REACT_ACT_ENVIRONMENT explicitly + // to false. + var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global + typeof IS_REACT_ACT_ENVIRONMENT !== 'undefined' ? // $FlowFixMe[cannot-resolve-name] + IS_REACT_ACT_ENVIRONMENT : undefined; // $FlowFixMe[cannot-resolve-name] - Flow doesn't know about jest + + var jestIsDefined = typeof jest !== 'undefined'; + return jestIsDefined && isReactActEnvironmentGlobal !== false; + } +} +function isConcurrentActEnvironment() { + { + var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global + typeof IS_REACT_ACT_ENVIRONMENT !== 'undefined' ? // $FlowFixMe[cannot-resolve-name] + IS_REACT_ACT_ENVIRONMENT : undefined; - var globalMostRecentFallbackTime = 0; - var FALLBACK_THROTTLE_MS = 300; // The absolute time for when we should start giving up on rendering - // more and prefer CPU suspense heuristics instead. + if (!isReactActEnvironmentGlobal && ReactSharedInternals.actQueue !== null) { + // TODO: Include link to relevant documentation page. + error('The current testing environment is not configured to support ' + 'act(...)'); + } - var workInProgressRootRenderTargetTime = Infinity; // How long a render is supposed to take before we start following CPU - // suspense heuristics and opt out of rendering more content. + return isReactActEnvironmentGlobal; + } +} - var RENDER_TIMEOUT_MS = 500; - var workInProgressTransitions = null; +var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; +var NoContext = +/* */ +0; +var BatchedContext = +/* */ +1; +var RenderContext = +/* */ +2; +var CommitContext = +/* */ +4; +var RootInProgress = 0; +var RootFatalErrored = 1; +var RootErrored = 2; +var RootSuspended = 3; +var RootSuspendedWithDelay = 4; +var RootCompleted = 5; +var RootDidNotComplete = 6; // Describes where we are in the React execution stack + +var executionContext = NoContext; // The root we're working on + +var workInProgressRoot = null; // The fiber we're working on + +var workInProgress = null; // The lanes we're rendering + +var workInProgressRootRenderLanes = NoLanes; +var NotSuspended = 0; +var SuspendedOnError = 1; +var SuspendedOnData = 2; +var SuspendedOnImmediate = 3; +var SuspendedOnInstance = 4; +var SuspendedOnInstanceAndReadyToContinue = 5; +var SuspendedOnDeprecatedThrowPromise = 6; +var SuspendedAndReadyToContinue = 7; +var SuspendedOnHydration = 8; // When this is true, the work-in-progress fiber just suspended (or errored) and +// we've yet to unwind the stack. In some cases, we may yield to the main thread +// after this happens. If the fiber is pinged before we resume, we can retry +// immediately instead of unwinding the stack. + +var workInProgressSuspendedReason = NotSuspended; +var workInProgressThrownValue = null; // Whether a ping listener was attached during this render. This is slightly +// different that whether something suspended, because we don't add multiple +// listeners to a promise we've already seen (per root and lane). + +var workInProgressRootDidAttachPingListener = false; // A contextual version of workInProgressRootRenderLanes. It is a superset of +// the lanes that we started working on at the root. When we enter a subtree +// that is currently hidden, we add the lanes that would have committed if +// the hidden tree hadn't been deferred. This is modified by the +// HiddenContext module. +// +// Most things in the work loop should deal with workInProgressRootRenderLanes. +// Most things in begin/complete phases should deal with entangledRenderLanes. + +var entangledRenderLanes = NoLanes; // Whether to root completed, errored, suspended, etc. + +var workInProgressRootExitStatus = RootInProgress; // The work left over by components that were visited during this render. Only +// includes unprocessed updates, not work in bailed out children. + +var workInProgressRootSkippedLanes = NoLanes; // Lanes that were updated (in an interleaved event) during this render. + +var workInProgressRootInterleavedUpdatedLanes = NoLanes; // Lanes that were updated during the render phase (*not* an interleaved event). + +var workInProgressRootPingedLanes = NoLanes; // If this lane scheduled deferred work, this is the lane of the deferred task. + +var workInProgressDeferredLane = NoLane; // Errors that are thrown during the render phase. + +var workInProgressRootConcurrentErrors = null; // These are errors that we recovered from without surfacing them to the UI. +// We will log them once the tree commits. + +var workInProgressRootRecoverableErrors = null; // Tracks when an update occurs during the render phase. + +var workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Thacks when an update occurs during the commit phase. It's a separate +// filled in with the resolved UI. This lets us throttle the appearance of new +// content as it streams in, to minimize jank. +// TODO: Think of a better name for this variable? + +var globalMostRecentFallbackTime = 0; +var FALLBACK_THROTTLE_MS = 300; // The absolute time for when we should start giving up on rendering +// more and prefer CPU suspense heuristics instead. + +var workInProgressRootRenderTargetTime = Infinity; // How long a render is supposed to take before we start following CPU +// suspense heuristics and opt out of rendering more content. + +var RENDER_TIMEOUT_MS = 500; +var workInProgressTransitions = null; + +function resetRenderTimer() { + workInProgressRootRenderTargetTime = now$1() + RENDER_TIMEOUT_MS; +} - function resetRenderTimer() { - workInProgressRootRenderTargetTime = now$1() + RENDER_TIMEOUT_MS; - } +function getRenderTargetTime() { + return workInProgressRootRenderTargetTime; +} +var legacyErrorBoundariesThatAlreadyFailed = null; +var rootDoesHavePassiveEffects = false; +var rootWithPendingPassiveEffects = null; +var pendingPassiveEffectsLanes = NoLanes; +var pendingPassiveProfilerEffects = []; +var pendingPassiveEffectsRemainingLanes = NoLanes; +var pendingPassiveTransitions = null; // Use these to prevent an infinite loop of nested updates + +var NESTED_UPDATE_LIMIT = 50; +var nestedUpdateCount = 0; +var rootWithNestedUpdates = null; +var isFlushingPassiveEffects = false; +var didScheduleUpdateDuringPassiveEffects = false; +var NESTED_PASSIVE_UPDATE_LIMIT = 50; +var nestedPassiveUpdateCount = 0; +var rootWithPassiveNestedUpdates = null; +var isRunningInsertionEffect = false; +function getWorkInProgressRoot() { + return workInProgressRoot; +} +function getWorkInProgressRootRenderLanes() { + return workInProgressRootRenderLanes; +} +function isWorkLoopSuspendedOnData() { + return workInProgressSuspendedReason === SuspendedOnData; +} +function requestUpdateLane(fiber) { + // Special cases + var mode = fiber.mode; + + if ((mode & ConcurrentMode) === NoMode) { + return SyncLane; + } else if ((executionContext & RenderContext) !== NoContext && workInProgressRootRenderLanes !== NoLanes) { + // This is a render phase update. These are not officially supported. The + // old behavior is to give this the same "thread" (lanes) as + // whatever is currently rendering. So if you call `setState` on a component + // that happens later in the same render, it will flush. Ideally, we want to + // remove the special case and treat them as if they came from an + // interleaved event. Regardless, this pattern is not officially supported. + // This behavior is only a fallback. The flag only exists until we can roll + // out the setState warning, since existing code might accidentally rely on + // the current behavior. + return pickArbitraryLane(workInProgressRootRenderLanes); + } + + var transition = requestCurrentTransition(); + + if (transition !== null) { + { + if (!transition._updatedFibers) { + transition._updatedFibers = new Set(); + } - function getRenderTargetTime() { - return workInProgressRootRenderTargetTime; + transition._updatedFibers.add(fiber); } - var legacyErrorBoundariesThatAlreadyFailed = null; - var rootDoesHavePassiveEffects = false; - var rootWithPendingPassiveEffects = null; - var pendingPassiveEffectsLanes = NoLanes; - var pendingPassiveProfilerEffects = []; - var pendingPassiveEffectsRemainingLanes = NoLanes; - var pendingPassiveTransitions = null; // Use these to prevent an infinite loop of nested updates - var NESTED_UPDATE_LIMIT = 50; - var nestedUpdateCount = 0; - var rootWithNestedUpdates = null; - var isFlushingPassiveEffects = false; - var didScheduleUpdateDuringPassiveEffects = false; - var NESTED_PASSIVE_UPDATE_LIMIT = 50; - var nestedPassiveUpdateCount = 0; - var rootWithPassiveNestedUpdates = null; - var isRunningInsertionEffect = false; - function getWorkInProgressRoot() { - return workInProgressRoot; - } - function getWorkInProgressRootRenderLanes() { - return workInProgressRootRenderLanes; - } - function isWorkLoopSuspendedOnData() { - return workInProgressSuspendedReason === SuspendedOnData; - } - function requestUpdateLane(fiber) { - // Special cases - var mode = fiber.mode; + var actionScopeLane = peekEntangledActionLane(); + return actionScopeLane !== NoLane ? // We're inside an async action scope. Reuse the same lane. + actionScopeLane : // We may or may not be inside an async action scope. If we are, this + // is the first update in that scope. Either way, we need to get a + // fresh transition lane. + requestTransitionLane(); + } - if ((mode & ConcurrentMode) === NoMode) { - return SyncLane; - } else if ( - (executionContext & RenderContext) !== NoContext && - workInProgressRootRenderLanes !== NoLanes - ) { - // This is a render phase update. These are not officially supported. The - // old behavior is to give this the same "thread" (lanes) as - // whatever is currently rendering. So if you call `setState` on a component - // that happens later in the same render, it will flush. Ideally, we want to - // remove the special case and treat them as if they came from an - // interleaved event. Regardless, this pattern is not officially supported. - // This behavior is only a fallback. The flag only exists until we can roll - // out the setState warning, since existing code might accidentally rely on - // the current behavior. - return pickArbitraryLane(workInProgressRootRenderLanes); - } + return eventPriorityToLane(resolveUpdatePriority()); +} - var transition = requestCurrentTransition(); +function requestRetryLane(fiber) { + // This is a fork of `requestUpdateLane` designed specifically for Suspense + // "retries" — a special update that attempts to flip a Suspense boundary + // from its placeholder state to its primary/resolved state. + // Special cases + var mode = fiber.mode; - if (transition !== null) { - { - if (!transition._updatedFibers) { - transition._updatedFibers = new Set(); - } + if ((mode & ConcurrentMode) === NoMode) { + return SyncLane; + } - transition._updatedFibers.add(fiber); - } + return claimNextRetryLane(); +} - var actionScopeLane = peekEntangledActionLane(); - return actionScopeLane !== NoLane // We're inside an async action scope. Reuse the same lane. - ? actionScopeLane // We may or may not be inside an async action scope. If we are, this - : // is the first update in that scope. Either way, we need to get a - // fresh transition lane. - requestTransitionLane(); - } +function requestDeferredLane() { + if (workInProgressDeferredLane === NoLane) { + // If there are multiple useDeferredValue hooks in the same render, the + // tasks that they spawn should all be batched together, so they should all + // receive the same lane. + // Check the priority of the current render to decide the priority of the + // deferred task. + // OffscreenLane is used for prerendering, but we also use OffscreenLane + // for incremental hydration. It's given the lowest priority because the + // initial HTML is the same as the final UI. But useDeferredValue during + // hydration is an exception — we need to upgrade the UI to the final + // value. So if we're currently hydrating, we treat it like a transition. + var isPrerendering = includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) && !getIsHydrating(); + + if (isPrerendering) { + // There's only one OffscreenLane, so if it contains deferred work, we + // should just reschedule using the same lane. + workInProgressDeferredLane = OffscreenLane; + } else { + // Everything else is spawned as a transition. + workInProgressDeferredLane = claimNextTransitionLane(); + } + } // Mark the parent Suspense boundary so it knows to spawn the deferred lane. + + + var suspenseHandler = getSuspenseHandler(); + + if (suspenseHandler !== null) { + // TODO: As an optimization, we shouldn't entangle the lanes at the root; we + // can entangle them using the baseLanes of the Suspense boundary instead. + // We only need to do something special if there's no Suspense boundary. + suspenseHandler.flags |= DidDefer; + } + + return workInProgressDeferredLane; +} +function peekDeferredLane() { + return workInProgressDeferredLane; +} +function scheduleUpdateOnFiber(root, fiber, lane) { + { + if (isRunningInsertionEffect) { + error('useInsertionEffect must not schedule updates.'); + } + } - return eventPriorityToLane(resolveUpdatePriority()); + { + if (isFlushingPassiveEffects) { + didScheduleUpdateDuringPassiveEffects = true; } + } // Check if the work loop is currently suspended and waiting for data to + // finish loading. - function requestRetryLane(fiber) { - // This is a fork of `requestUpdateLane` designed specifically for Suspense - // "retries" — a special update that attempts to flip a Suspense boundary - // from its placeholder state to its primary/resolved state. - // Special cases - var mode = fiber.mode; - if ((mode & ConcurrentMode) === NoMode) { - return SyncLane; - } + if ( // Suspended render phase + root === workInProgressRoot && workInProgressSuspendedReason === SuspendedOnData || // Suspended commit phase + root.cancelPendingCommit !== null) { + // The incoming update might unblock the current render. Interrupt the + // current attempt and restart from the top. + prepareFreshStack(root, NoLanes); + markRootSuspended(root, workInProgressRootRenderLanes, workInProgressDeferredLane); + } // Mark that the root has a pending update. - return claimNextRetryLane(); - } - function requestDeferredLane() { - if (workInProgressDeferredLane === NoLane) { - // If there are multiple useDeferredValue hooks in the same render, the - // tasks that they spawn should all be batched together, so they should all - // receive the same lane. - // Check the priority of the current render to decide the priority of the - // deferred task. - // OffscreenLane is used for prerendering, but we also use OffscreenLane - // for incremental hydration. It's given the lowest priority because the - // initial HTML is the same as the final UI. But useDeferredValue during - // hydration is an exception — we need to upgrade the UI to the final - // value. So if we're currently hydrating, we treat it like a transition. - var isPrerendering = - includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) && - !getIsHydrating(); + markRootUpdated(root, lane); - if (isPrerendering) { - // There's only one OffscreenLane, so if it contains deferred work, we - // should just reschedule using the same lane. - workInProgressDeferredLane = OffscreenLane; - } else { - // Everything else is spawned as a transition. - workInProgressDeferredLane = claimNextTransitionLane(); - } - } // Mark the parent Suspense boundary so it knows to spawn the deferred lane. + if ((executionContext & RenderContext) !== NoLanes && root === workInProgressRoot) { + // This update was dispatched during the render phase. This is a mistake + // if the update originates from user space (with the exception of local + // hook updates, which are handled differently and don't reach this + // function), but there are some internal React features that use this as + // an implementation detail, like selective hydration. + warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase + } else { - var suspenseHandler = getSuspenseHandler(); + warnIfUpdatesNotWrappedWithActDEV(fiber); - if (suspenseHandler !== null) { - // TODO: As an optimization, we shouldn't entangle the lanes at the root; we - // can entangle them using the baseLanes of the Suspense boundary instead. - // We only need to do something special if there's no Suspense boundary. - suspenseHandler.flags |= DidDefer; + if (root === workInProgressRoot) { + // Received an update to a tree that's in the middle of rendering. Mark + // that there was an interleaved update work on this root. + if ((executionContext & RenderContext) === NoContext) { + workInProgressRootInterleavedUpdatedLanes = mergeLanes(workInProgressRootInterleavedUpdatedLanes, lane); } - return workInProgressDeferredLane; - } - function peekDeferredLane() { - return workInProgressDeferredLane; - } - function scheduleUpdateOnFiber(root, fiber, lane) { - { - if (isRunningInsertionEffect) { - error("useInsertionEffect must not schedule updates."); - } + if (workInProgressRootExitStatus === RootSuspendedWithDelay) { + // The root already suspended with a delay, which means this render + // definitely won't finish. Since we have a new update, let's mark it as + // suspended now, right before marking the incoming update. This has the + // effect of interrupting the current render and switching to the update. + // TODO: Make sure this doesn't override pings that happen while we've + // already started rendering. + markRootSuspended(root, workInProgressRootRenderLanes, workInProgressDeferredLane); } + } - { - if (isFlushingPassiveEffects) { - didScheduleUpdateDuringPassiveEffects = true; - } - } // Check if the work loop is currently suspended and waiting for data to - // finish loading. - - if ( - // Suspended render phase - (root === workInProgressRoot && - workInProgressSuspendedReason === SuspendedOnData) || // Suspended commit phase - root.cancelPendingCommit !== null - ) { - // The incoming update might unblock the current render. Interrupt the - // current attempt and restart from the top. - prepareFreshStack(root, NoLanes); - markRootSuspended( - root, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } // Mark that the root has a pending update. - - markRootUpdated(root, lane); - - if ( - (executionContext & RenderContext) !== NoLanes && - root === workInProgressRoot - ) { - // This update was dispatched during the render phase. This is a mistake - // if the update originates from user space (with the exception of local - // hook updates, which are handled differently and don't reach this - // function), but there are some internal React features that use this as - // an implementation detail, like selective hydration. - warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase - } else { - warnIfUpdatesNotWrappedWithActDEV(fiber); - - if (root === workInProgressRoot) { - // Received an update to a tree that's in the middle of rendering. Mark - // that there was an interleaved update work on this root. - if ((executionContext & RenderContext) === NoContext) { - workInProgressRootInterleavedUpdatedLanes = mergeLanes( - workInProgressRootInterleavedUpdatedLanes, - lane - ); - } - - if (workInProgressRootExitStatus === RootSuspendedWithDelay) { - // The root already suspended with a delay, which means this render - // definitely won't finish. Since we have a new update, let's mark it as - // suspended now, right before marking the incoming update. This has the - // effect of interrupting the current render and switching to the update. - // TODO: Make sure this doesn't override pings that happen while we've - // already started rendering. - markRootSuspended( - root, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } - } + ensureRootIsScheduled(root); - ensureRootIsScheduled(root); - - if ( - lane === SyncLane && - executionContext === NoContext && - !disableLegacyMode && - (fiber.mode & ConcurrentMode) === NoMode - ) { - if (ReactSharedInternals.isBatchingLegacy); - else { - // Flush the synchronous work now, unless we're already working or inside - // a batch. This is intentionally inside scheduleUpdateOnFiber instead of - // scheduleCallbackForFiber to preserve the ability to schedule a callback - // without immediately flushing it. We only do this for user-initiated - // updates, to preserve historical behavior of legacy mode. - resetRenderTimer(); - flushSyncWorkOnLegacyRootsOnly(); - } - } + if (lane === SyncLane && executionContext === NoContext && !disableLegacyMode && (fiber.mode & ConcurrentMode) === NoMode) { + if (ReactSharedInternals.isBatchingLegacy) ; else { + // Flush the synchronous work now, unless we're already working or inside + // a batch. This is intentionally inside scheduleUpdateOnFiber instead of + // scheduleCallbackForFiber to preserve the ability to schedule a callback + // without immediately flushing it. We only do this for user-initiated + // updates, to preserve historical behavior of legacy mode. + resetRenderTimer(); + flushSyncWorkOnLegacyRootsOnly(); } } - function isUnsafeClassRenderPhaseUpdate(fiber) { - // Check if this is a render phase update. Only called by class components, - // which special (deprecated) behavior for UNSAFE_componentWillReceive props. - return (executionContext & RenderContext) !== NoContext; - } // This is the entry point for every concurrent task, i.e. anything that - // goes through Scheduler. + } +} +function isUnsafeClassRenderPhaseUpdate(fiber) { + // Check if this is a render phase update. Only called by class components, + // which special (deprecated) behavior for UNSAFE_componentWillReceive props. + return (executionContext & RenderContext) !== NoContext; +} // This is the entry point for every concurrent task, i.e. anything that +// goes through Scheduler. + +function performConcurrentWorkOnRoot(root, didTimeout) { + { + resetNestedUpdateFlag(); + } + + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } // Flush any pending passive effects before deciding which lanes to work on, + // in case they schedule additional work. + + + var originalCallbackNode = root.callbackNode; + var didFlushPassiveEffects = flushPassiveEffects(); + + if (didFlushPassiveEffects) { + // Something in the passive effect phase may have canceled the current task. + // Check if the task node for this root was changed. + if (root.callbackNode !== originalCallbackNode) { + // The current task was canceled. Exit. We don't need to call + // `ensureRootIsScheduled` because the check above implies either that + // there's a new task, or that there's no remaining work on this root. + return null; + } + } // Determine the next lanes to work on, using the fields stored + // on the root. + // TODO: This was already computed in the caller. Pass it as an argument. - function performConcurrentWorkOnRoot(root, didTimeout) { - { - resetNestedUpdateFlag(); - } - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); - } // Flush any pending passive effects before deciding which lanes to work on, - // in case they schedule additional work. + var lanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); - var originalCallbackNode = root.callbackNode; - var didFlushPassiveEffects = flushPassiveEffects(); + if (lanes === NoLanes) { + // Defensive coding. This is never expected to happen. + return null; + } // We disable time-slicing in some cases: if the work has been CPU-bound + // for too long ("expired" work, to prevent starvation), or we're in + // sync-updates-by-default mode. + // TODO: We only check `didTimeout` defensively, to account for a Scheduler + // bug we're still investigating. Once the bug in Scheduler is fixed, + // we can remove this, since we track expiration ourselves. - if (didFlushPassiveEffects) { - // Something in the passive effect phase may have canceled the current task. - // Check if the task node for this root was changed. - if (root.callbackNode !== originalCallbackNode) { - // The current task was canceled. Exit. We don't need to call - // `ensureRootIsScheduled` because the check above implies either that - // there's a new task, or that there's no remaining work on this root. - return null; - } - } // Determine the next lanes to work on, using the fields stored - // on the root. - // TODO: This was already computed in the caller. Pass it as an argument. - var lanes = getNextLanes( - root, - root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes - ); + var shouldTimeSlice = !includesBlockingLane(root, lanes) && !includesExpiredLane(root, lanes) && (!didTimeout); + var exitStatus = shouldTimeSlice ? renderRootConcurrent(root, lanes) : renderRootSync(root, lanes); - if (lanes === NoLanes) { - // Defensive coding. This is never expected to happen. - return null; - } // We disable time-slicing in some cases: if the work has been CPU-bound - // for too long ("expired" work, to prevent starvation), or we're in - // sync-updates-by-default mode. - // TODO: We only check `didTimeout` defensively, to account for a Scheduler - // bug we're still investigating. Once the bug in Scheduler is fixed, - // we can remove this, since we track expiration ourselves. - - var shouldTimeSlice = - !includesBlockingLane(root, lanes) && - !includesExpiredLane(root, lanes) && - !didTimeout; - var exitStatus = shouldTimeSlice - ? renderRootConcurrent(root, lanes) - : renderRootSync(root, lanes); - - if (exitStatus !== RootInProgress) { - var renderWasConcurrent = shouldTimeSlice; + if (exitStatus !== RootInProgress) { + var renderWasConcurrent = shouldTimeSlice; - do { - if (exitStatus === RootDidNotComplete) { - // The render unwound without completing the tree. This happens in special - // cases where need to exit the current render without producing a - // consistent tree or committing. - markRootSuspended(root, lanes, NoLane); - } else { - // The render completed. - // Check if this render may have yielded to a concurrent event, and if so, - // confirm that any newly rendered stores are consistent. - // TODO: It's possible that even a concurrent render may never have yielded - // to the main thread, if it was fast enough, or if it expired. We could - // skip the consistency check in that case, too. - var finishedWork = root.current.alternate; - - if ( - renderWasConcurrent && - !isRenderConsistentWithExternalStores(finishedWork) - ) { - // A store was mutated in an interleaved event. Render again, - // synchronously, to block further mutations. - exitStatus = renderRootSync(root, lanes); // We assume the tree is now consistent because we didn't yield to any - // concurrent events. - - renderWasConcurrent = false; // Need to check the exit status again. + do { + if (exitStatus === RootDidNotComplete) { + // The render unwound without completing the tree. This happens in special + // cases where need to exit the current render without producing a + // consistent tree or committing. + markRootSuspended(root, lanes, NoLane); + } else { + // The render completed. + // Check if this render may have yielded to a concurrent event, and if so, + // confirm that any newly rendered stores are consistent. + // TODO: It's possible that even a concurrent render may never have yielded + // to the main thread, if it was fast enough, or if it expired. We could + // skip the consistency check in that case, too. + var finishedWork = root.current.alternate; + + if (renderWasConcurrent && !isRenderConsistentWithExternalStores(finishedWork)) { + // A store was mutated in an interleaved event. Render again, + // synchronously, to block further mutations. + exitStatus = renderRootSync(root, lanes); // We assume the tree is now consistent because we didn't yield to any + // concurrent events. + + renderWasConcurrent = false; // Need to check the exit status again. + continue; + } // Check if something threw + + + if (exitStatus === RootErrored) { + var lanesThatJustErrored = lanes; + var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root, lanesThatJustErrored); + + if (errorRetryLanes !== NoLanes) { + lanes = errorRetryLanes; + exitStatus = recoverFromConcurrentError(root, lanesThatJustErrored, errorRetryLanes); + renderWasConcurrent = false; // Need to check the exit status again. + + if (exitStatus !== RootErrored) { + // The root did not error this time. Restart the exit algorithm + // from the beginning. + // TODO: Refactor the exit algorithm to be less confusing. Maybe + // more branches + recursion instead of a loop. I think the only + // thing that causes it to be a loop is the RootDidNotComplete + // check. If that's true, then we don't need a loop/recursion + // at all. continue; - } // Check if something threw - - if (exitStatus === RootErrored) { - var lanesThatJustErrored = lanes; - var errorRetryLanes = getLanesToRetrySynchronouslyOnError( - root, - lanesThatJustErrored - ); - - if (errorRetryLanes !== NoLanes) { - lanes = errorRetryLanes; - exitStatus = recoverFromConcurrentError( - root, - lanesThatJustErrored, - errorRetryLanes - ); - renderWasConcurrent = false; // Need to check the exit status again. - - if (exitStatus !== RootErrored) { - // The root did not error this time. Restart the exit algorithm - // from the beginning. - // TODO: Refactor the exit algorithm to be less confusing. Maybe - // more branches + recursion instead of a loop. I think the only - // thing that causes it to be a loop is the RootDidNotComplete - // check. If that's true, then we don't need a loop/recursion - // at all. - continue; - } - } } - - if (exitStatus === RootFatalErrored) { - prepareFreshStack(root, NoLanes); - markRootSuspended(root, lanes, NoLane); - break; - } // We now have a consistent tree. The next step is either to commit it, - // or, if something suspended, wait to commit it after a timeout. - - root.finishedWork = finishedWork; - root.finishedLanes = lanes; - finishConcurrentRender(root, exitStatus, finishedWork, lanes); } - - break; - } while (true); - } - - ensureRootIsScheduled(root); - return getContinuationForRoot(root, originalCallbackNode); - } - - function recoverFromConcurrentError( - root, - originallyAttemptedLanes, - errorRetryLanes - ) { - // If an error occurred during hydration, discard server response and fall - // back to client side render. - // Before rendering again, save the errors from the previous attempt. - var errorsFromFirstAttempt = workInProgressRootConcurrentErrors; - var wasRootDehydrated = supportsHydration; - - var exitStatus = renderRootSync(root, errorRetryLanes); - - if (exitStatus !== RootErrored) { - // Successfully finished rendering on retry - if (workInProgressRootDidAttachPingListener && !wasRootDehydrated) { - // During the synchronous render, we attached additional ping listeners. - // This is highly suggestive of an uncached promise (though it's not the - // only reason this would happen). If it was an uncached promise, then - // it may have masked a downstream error from ocurring without actually - // fixing it. Example: - // - // use(Promise.resolve('uncached')) - // throw new Error('Oops!') - // - // When this happens, there's a conflict between blocking potential - // concurrent data races and unwrapping uncached promise values. We - // have to choose one or the other. Because the data race recovery is - // a last ditch effort, we'll disable it. - root.errorRecoveryDisabledLanes = mergeLanes( - root.errorRecoveryDisabledLanes, - originallyAttemptedLanes - ); // Mark the current render as suspended and force it to restart. Once - // these lanes finish successfully, we'll re-enable the error recovery - // mechanism for subsequent updates. - - workInProgressRootInterleavedUpdatedLanes |= originallyAttemptedLanes; - return RootSuspendedWithDelay; - } // The errors from the failed first attempt have been recovered. Add - // them to the collection of recoverable errors. We'll log them in the - // commit phase. - - var errorsFromSecondAttempt = workInProgressRootRecoverableErrors; - workInProgressRootRecoverableErrors = errorsFromFirstAttempt; // The errors from the second attempt should be queued after the errors - // from the first attempt, to preserve the causal sequence. - - if (errorsFromSecondAttempt !== null) { - queueRecoverableErrors(errorsFromSecondAttempt); - } - } - - return exitStatus; - } - - function queueRecoverableErrors(errors) { - if (workInProgressRootRecoverableErrors === null) { - workInProgressRootRecoverableErrors = errors; - } else { - // $FlowFixMe[method-unbinding] - workInProgressRootRecoverableErrors.push.apply( - workInProgressRootRecoverableErrors, - errors - ); - } - } - - function finishConcurrentRender(root, exitStatus, finishedWork, lanes) { - // TODO: The fact that most of these branches are identical suggests that some - // of the exit statuses are not best modeled as exit statuses and should be - // tracked orthogonally. - switch (exitStatus) { - case RootInProgress: - case RootFatalErrored: { - throw new Error("Root did not complete. This is a bug in React."); - } - - case RootSuspendedWithDelay: { - if (includesOnlyTransitions(lanes)) { - // This is a transition, so we should exit without committing a - // placeholder and without scheduling a timeout. Delay indefinitely - // until we receive more data. - markRootSuspended(root, lanes, workInProgressDeferredLane); - return; - } // Commit the placeholder. - - break; } - case RootErrored: { - // This render errored. Ignore any recoverable errors because we weren't actually - // able to recover. Instead, whatever the final errors were is the ones we log. - // This ensures that we only log the actual client side error if it's just a plain - // error thrown from a component on the server and the client. - workInProgressRootRecoverableErrors = null; + if (exitStatus === RootFatalErrored) { + prepareFreshStack(root, NoLanes); + markRootSuspended(root, lanes, NoLane); break; - } + } // We now have a consistent tree. The next step is either to commit it, + // or, if something suspended, wait to commit it after a timeout. - case RootSuspended: - case RootCompleted: { - break; - } - default: { - throw new Error("Unknown root exit status."); - } + root.finishedWork = finishedWork; + root.finishedLanes = lanes; + finishConcurrentRender(root, exitStatus, finishedWork, lanes); } - if (shouldForceFlushFallbacksInDEV()) { - // We're inside an `act` scope. Commit immediately. - commitRoot( - root, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - workInProgressDeferredLane - ); - } else { - if (includesOnlyRetries(lanes) && exitStatus === RootSuspended) { - // This render only included retries, no updates. Throttle committing - // retries so that we don't show too many loading states too quickly. - var msUntilTimeout = - globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now$1(); // Don't bother with a very short suspense time. - - if (msUntilTimeout > 10) { - markRootSuspended(root, lanes, workInProgressDeferredLane); - var nextLanes = getNextLanes(root, NoLanes); - - if (nextLanes !== NoLanes) { - // There's additional work we can do on this root. We might as well - // attempt to work on that while we're suspended. - return; - } // The render is suspended, it hasn't timed out, and there's no - // lower priority work to do. Instead of committing the fallback - // immediately, wait for more data to arrive. - // TODO: Combine retry throttling with Suspensey commits. Right now they - // run one after the other. - - root.timeoutHandle = scheduleTimeout( - commitRootWhenReady.bind( - null, - root, - finishedWork, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - lanes, - workInProgressDeferredLane - ), - msUntilTimeout - ); - return; - } - } + break; + } while (true); + } - commitRootWhenReady( - root, - finishedWork, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - lanes, - workInProgressDeferredLane - ); - } - } - - function commitRootWhenReady( - root, - finishedWork, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - lanes, - spawnedLane - ) { - // TODO: Combine retry throttling with Suspensey commits. Right now they run - // one after the other. - if (includesOnlyNonUrgentLanes(lanes)) { - // the suspensey resources. The renderer is responsible for accumulating - // all the load events. This all happens in a single synchronous - // transaction, so it track state in its own module scope. - - accumulateSuspenseyCommit(finishedWork); // At the end, ask the renderer if it's ready to commit, or if we should - // suspend. If it's not ready, it will return a callback to subscribe to - // a ready event. - - var schedulePendingCommit = waitForCommitToBeReady(); - - if (schedulePendingCommit !== null) { - // NOTE: waitForCommitToBeReady returns a subscribe function so that we - // only allocate a function if the commit isn't ready yet. The other - // pattern would be to always pass a callback to waitForCommitToBeReady. - // Not yet ready to commit. Delay the commit until the renderer notifies - // us that it's ready. This will be canceled if we start work on the - // root again. - root.cancelPendingCommit = schedulePendingCommit( - commitRoot.bind( - null, - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate - ) - ); - markRootSuspended(root, lanes, spawnedLane); - return; - } - } // Otherwise, commit immediately. + ensureRootIsScheduled(root); + return getContinuationForRoot(root, originalCallbackNode); +} - commitRoot( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - spawnedLane - ); - } +function recoverFromConcurrentError(root, originallyAttemptedLanes, errorRetryLanes) { + // If an error occurred during hydration, discard server response and fall + // back to client side render. + // Before rendering again, save the errors from the previous attempt. + var errorsFromFirstAttempt = workInProgressRootConcurrentErrors; + var wasRootDehydrated = supportsHydration ; + + var exitStatus = renderRootSync(root, errorRetryLanes); + + if (exitStatus !== RootErrored) { + // Successfully finished rendering on retry + if (workInProgressRootDidAttachPingListener && !wasRootDehydrated) { + // During the synchronous render, we attached additional ping listeners. + // This is highly suggestive of an uncached promise (though it's not the + // only reason this would happen). If it was an uncached promise, then + // it may have masked a downstream error from ocurring without actually + // fixing it. Example: + // + // use(Promise.resolve('uncached')) + // throw new Error('Oops!') + // + // When this happens, there's a conflict between blocking potential + // concurrent data races and unwrapping uncached promise values. We + // have to choose one or the other. Because the data race recovery is + // a last ditch effort, we'll disable it. + root.errorRecoveryDisabledLanes = mergeLanes(root.errorRecoveryDisabledLanes, originallyAttemptedLanes); // Mark the current render as suspended and force it to restart. Once + // these lanes finish successfully, we'll re-enable the error recovery + // mechanism for subsequent updates. - function isRenderConsistentWithExternalStores(finishedWork) { - // Search the rendered tree for external store reads, and check whether the - // stores were mutated in a concurrent event. Intentionally using an iterative - // loop instead of recursion so we can exit early. - var node = finishedWork; + workInProgressRootInterleavedUpdatedLanes |= originallyAttemptedLanes; + return RootSuspendedWithDelay; + } // The errors from the failed first attempt have been recovered. Add + // them to the collection of recoverable errors. We'll log them in the + // commit phase. - while (true) { - if (node.flags & StoreConsistency) { - var updateQueue = node.updateQueue; - if (updateQueue !== null) { - var checks = updateQueue.stores; - - if (checks !== null) { - for (var i = 0; i < checks.length; i++) { - var check = checks[i]; - var getSnapshot = check.getSnapshot; - var renderedValue = check.value; - - try { - if (!objectIs(getSnapshot(), renderedValue)) { - // Found an inconsistent store. - return false; - } - } catch (error) { - // If `getSnapshot` throws, return `false`. This will schedule - // a re-render, and the error will be rethrown during render. - return false; - } - } - } - } - } + var errorsFromSecondAttempt = workInProgressRootRecoverableErrors; + workInProgressRootRecoverableErrors = errorsFromFirstAttempt; // The errors from the second attempt should be queued after the errors + // from the first attempt, to preserve the causal sequence. - var child = node.child; + if (errorsFromSecondAttempt !== null) { + queueRecoverableErrors(errorsFromSecondAttempt); + } + } - if (node.subtreeFlags & StoreConsistency && child !== null) { - child.return = node; - node = child; - continue; - } + return exitStatus; +} - if (node === finishedWork) { - return true; - } +function queueRecoverableErrors(errors) { + if (workInProgressRootRecoverableErrors === null) { + workInProgressRootRecoverableErrors = errors; + } else { + // $FlowFixMe[method-unbinding] + workInProgressRootRecoverableErrors.push.apply(workInProgressRootRecoverableErrors, errors); + } +} - while (node.sibling === null) { - if (node.return === null || node.return === finishedWork) { - return true; - } +function finishConcurrentRender(root, exitStatus, finishedWork, lanes) { + // TODO: The fact that most of these branches are identical suggests that some + // of the exit statuses are not best modeled as exit statuses and should be + // tracked orthogonally. + switch (exitStatus) { + case RootInProgress: + case RootFatalErrored: + { + throw new Error('Root did not complete. This is a bug in React.'); + } - node = node.return; - } + case RootSuspendedWithDelay: + { + if (includesOnlyTransitions(lanes)) { + // This is a transition, so we should exit without committing a + // placeholder and without scheduling a timeout. Delay indefinitely + // until we receive more data. + markRootSuspended(root, lanes, workInProgressDeferredLane); + return; + } // Commit the placeholder. - node.sibling.return = node.return; - node = node.sibling; - } // Flow doesn't know this is unreachable, but eslint does - // eslint-disable-next-line no-unreachable - return true; - } // The extra indirections around markRootUpdated and markRootSuspended is - // needed to avoid a circular dependency between this module and - // ReactFiberLane. There's probably a better way to split up these modules and - // avoid this problem. Perhaps all the root-marking functions should move into - // the work loop. - - function markRootUpdated(root, updatedLanes) { - markRootUpdated$1(root, updatedLanes); - } - - function markRootPinged(root, pingedLanes) { - markRootPinged$1(root, pingedLanes); - } - - function markRootSuspended(root, suspendedLanes, spawnedLane) { - // When suspending, we should always exclude lanes that were pinged or (more - // rarely, since we try to avoid it) updated during the render phase. - suspendedLanes = removeLanes( - suspendedLanes, - workInProgressRootPingedLanes - ); - suspendedLanes = removeLanes( - suspendedLanes, - workInProgressRootInterleavedUpdatedLanes - ); - - markRootSuspended$1(root, suspendedLanes, spawnedLane); - } // This is the entry point for synchronous tasks that don't go - // through Scheduler - - function performSyncWorkOnRoot(root, lanes) { - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); - } - - var didFlushPassiveEffects = flushPassiveEffects(); - - if (didFlushPassiveEffects) { - // If passive effects were flushed, exit to the outer work loop in the root - // scheduler, so we can recompute the priority. - // TODO: We don't actually need this `ensureRootIsScheduled` call because - // this path is only reachable if the root is already part of the schedule. - // I'm including it only for consistency with the other exit points from - // this function. Can address in a subsequent refactor. - ensureRootIsScheduled(root); - return null; + break; } + case RootErrored: { - syncNestedUpdateFlag(); - } - - var exitStatus = renderRootSync(root, lanes); - - if (root.tag !== LegacyRoot && exitStatus === RootErrored) { - // If something threw an error, try rendering one more time. We'll render - // synchronously to block concurrent data mutations, and we'll includes - // all pending updates are included. If it still fails after the second - // attempt, we'll give up and commit the resulting tree. - var originallyAttemptedLanes = lanes; - var errorRetryLanes = getLanesToRetrySynchronouslyOnError( - root, - originallyAttemptedLanes - ); - - if (errorRetryLanes !== NoLanes) { - lanes = errorRetryLanes; - exitStatus = recoverFromConcurrentError( - root, - originallyAttemptedLanes, - errorRetryLanes - ); - } + // This render errored. Ignore any recoverable errors because we weren't actually + // able to recover. Instead, whatever the final errors were is the ones we log. + // This ensures that we only log the actual client side error if it's just a plain + // error thrown from a component on the server and the client. + workInProgressRootRecoverableErrors = null; + break; } - if (exitStatus === RootFatalErrored) { - prepareFreshStack(root, NoLanes); - markRootSuspended(root, lanes, NoLane); - ensureRootIsScheduled(root); - return null; + case RootSuspended: + case RootCompleted: + { + break; } - if (exitStatus === RootDidNotComplete) { - // The render unwound without completing the tree. This happens in special - // cases where need to exit the current render without producing a - // consistent tree or committing. - markRootSuspended(root, lanes, workInProgressDeferredLane); - ensureRootIsScheduled(root); - return null; - } // We now have a consistent tree. Because this is a sync render, we - // will commit it even if something suspended. - - var finishedWork = root.current.alternate; - root.finishedWork = finishedWork; - root.finishedLanes = lanes; - commitRoot( - root, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - workInProgressDeferredLane - ); // Before exiting, make sure there's a callback scheduled for the next - // pending level. - - ensureRootIsScheduled(root); - return null; - } - function getExecutionContext() { - return executionContext; - } - function batchedUpdates(fn, a) { + default: { - var prevExecutionContext = executionContext; - executionContext |= BatchedContext; - - try { - return fn(a); - } finally { - executionContext = prevExecutionContext; // If there were legacy sync updates, flush them at the end of the outer - // most batchedUpdates-like method. - - if ( - executionContext === NoContext && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. - !ReactSharedInternals.isBatchingLegacy - ) { - resetRenderTimer(); - flushSyncWorkOnLegacyRootsOnly(); - } - } - } - } - // Warning, this opts-out of checking the function body. - // eslint-disable-next-line no-unused-vars - // eslint-disable-next-line no-redeclare - // eslint-disable-next-line no-redeclare - - function flushSyncFromReconciler(fn) { - // In legacy mode, we flush pending passive effects at the beginning of the - // next event, not at the end of the previous one. - if ( - rootWithPendingPassiveEffects !== null && - !disableLegacyMode && - rootWithPendingPassiveEffects.tag === LegacyRoot && - (executionContext & (RenderContext | CommitContext)) === NoContext - ) { - flushPassiveEffects(); + throw new Error('Unknown root exit status.'); } + } - var prevExecutionContext = executionContext; - executionContext |= BatchedContext; - var prevTransition = ReactSharedInternals.T; - var previousPriority = getCurrentUpdatePriority(); + if (shouldForceFlushFallbacksInDEV()) { + // We're inside an `act` scope. Commit immediately. + commitRoot(root, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, workInProgressDeferredLane); + } else { + if (includesOnlyRetries(lanes) && (exitStatus === RootSuspended)) { + // This render only included retries, no updates. Throttle committing + // retries so that we don't show too many loading states too quickly. + var msUntilTimeout = globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now$1(); // Don't bother with a very short suspense time. - try { - setCurrentUpdatePriority(DiscreteEventPriority); - ReactSharedInternals.T = null; + if (msUntilTimeout > 10) { + markRootSuspended(root, lanes, workInProgressDeferredLane); + var nextLanes = getNextLanes(root, NoLanes); - if (fn) { - return fn(); - } else { - return undefined; - } - } finally { - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; - executionContext = prevExecutionContext; // Flush the immediate callbacks that were scheduled during this batch. - // Note that this will happen even if batchedUpdates is higher up - // the stack. - - if ( - (executionContext & (RenderContext | CommitContext)) === - NoContext - ) { - flushSyncWorkOnAllRoots(); - } - } - } // If called outside of a render or commit will flush all sync work on all roots - // Returns whether the the call was during a render or not + if (nextLanes !== NoLanes) { + // There's additional work we can do on this root. We might as well + // attempt to work on that while we're suspended. + return; + } // The render is suspended, it hasn't timed out, and there's no + // lower priority work to do. Instead of committing the fallback + // immediately, wait for more data to arrive. + // TODO: Combine retry throttling with Suspensey commits. Right now they + // run one after the other. - function flushSyncWork() { - if ((executionContext & (RenderContext | CommitContext)) === NoContext) { - flushSyncWorkOnAllRoots(); - return false; - } - return true; + root.timeoutHandle = scheduleTimeout(commitRootWhenReady.bind(null, root, finishedWork, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, lanes, workInProgressDeferredLane), msUntilTimeout); + return; + } } - // hidden subtree. The stack logic is managed there because that's the only - // place that ever modifies it. Which module it lives in doesn't matter for - // performance because this function will get inlined regardless - function setEntangledRenderLanes(newEntangledRenderLanes) { - entangledRenderLanes = newEntangledRenderLanes; - } - function getEntangledRenderLanes() { - return entangledRenderLanes; - } + commitRootWhenReady(root, finishedWork, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, lanes, workInProgressDeferredLane); + } +} - function resetWorkInProgressStack() { - if (workInProgress === null) return; - var interruptedWork; +function commitRootWhenReady(root, finishedWork, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, lanes, spawnedLane) { + // TODO: Combine retry throttling with Suspensey commits. Right now they run + // one after the other. + if (includesOnlyNonUrgentLanes(lanes)) { + // the suspensey resources. The renderer is responsible for accumulating + // all the load events. This all happens in a single synchronous + // transaction, so it track state in its own module scope. - if (workInProgressSuspendedReason === NotSuspended) { - // Normal case. Work-in-progress hasn't started yet. Unwind all - // its parents. - interruptedWork = workInProgress.return; - } else { - // Work-in-progress is in suspended state. Reset the work loop and unwind - // both the suspended fiber and all its parents. - resetSuspendedWorkLoopOnUnwind(workInProgress); - interruptedWork = workInProgress; - } + accumulateSuspenseyCommit(finishedWork); // At the end, ask the renderer if it's ready to commit, or if we should + // suspend. If it's not ready, it will return a callback to subscribe to + // a ready event. - while (interruptedWork !== null) { - var current = interruptedWork.alternate; - unwindInterruptedWork(current, interruptedWork); - interruptedWork = interruptedWork.return; - } + var schedulePendingCommit = waitForCommitToBeReady(); - workInProgress = null; + if (schedulePendingCommit !== null) { + // NOTE: waitForCommitToBeReady returns a subscribe function so that we + // only allocate a function if the commit isn't ready yet. The other + // pattern would be to always pass a callback to waitForCommitToBeReady. + // Not yet ready to commit. Delay the commit until the renderer notifies + // us that it's ready. This will be canceled if we start work on the + // root again. + root.cancelPendingCommit = schedulePendingCommit(commitRoot.bind(null, root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate)); + markRootSuspended(root, lanes, spawnedLane); + return; } + } // Otherwise, commit immediately. - function prepareFreshStack(root, lanes) { - root.finishedWork = null; - root.finishedLanes = NoLanes; - var timeoutHandle = root.timeoutHandle; - if (timeoutHandle !== noTimeout) { - // The root previous suspended and scheduled a timeout to commit a fallback - // state. Now that we have additional work, cancel the timeout. - root.timeoutHandle = noTimeout; // $FlowFixMe[incompatible-call] Complains noTimeout is not a TimeoutID, despite the check above + commitRoot(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, spawnedLane); +} - cancelTimeout(timeoutHandle); - } +function isRenderConsistentWithExternalStores(finishedWork) { + // Search the rendered tree for external store reads, and check whether the + // stores were mutated in a concurrent event. Intentionally using an iterative + // loop instead of recursion so we can exit early. + var node = finishedWork; - var cancelPendingCommit = root.cancelPendingCommit; + while (true) { + if (node.flags & StoreConsistency) { + var updateQueue = node.updateQueue; - if (cancelPendingCommit !== null) { - root.cancelPendingCommit = null; - cancelPendingCommit(); + if (updateQueue !== null) { + var checks = updateQueue.stores; + + if (checks !== null) { + for (var i = 0; i < checks.length; i++) { + var check = checks[i]; + var getSnapshot = check.getSnapshot; + var renderedValue = check.value; + + try { + if (!objectIs(getSnapshot(), renderedValue)) { + // Found an inconsistent store. + return false; + } + } catch (error) { + // If `getSnapshot` throws, return `false`. This will schedule + // a re-render, and the error will be rethrown during render. + return false; + } + } + } } + } - resetWorkInProgressStack(); - workInProgressRoot = root; - var rootWorkInProgress = createWorkInProgress(root.current, null); - workInProgress = rootWorkInProgress; - workInProgressRootRenderLanes = lanes; - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - workInProgressRootDidAttachPingListener = false; - workInProgressRootExitStatus = RootInProgress; - workInProgressRootSkippedLanes = NoLanes; - workInProgressRootInterleavedUpdatedLanes = NoLanes; - workInProgressRootPingedLanes = NoLanes; - workInProgressDeferredLane = NoLane; - workInProgressRootConcurrentErrors = null; - workInProgressRootRecoverableErrors = null; - workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Get the lanes that are entangled with whatever we're about to render. We - // track these separately so we can distinguish the priority of the render - // task from the priority of the lanes it is entangled with. For example, a - // transition may not be allowed to finish unless it includes the Sync lane, - // which is currently suspended. We should be able to render the Transition - // and Sync lane in the same batch, but at Transition priority, because the - // Sync lane already suspended. + var child = node.child; - entangledRenderLanes = getEntangledLanes(root, lanes); - finishQueueingConcurrentUpdates(); + if (node.subtreeFlags & StoreConsistency && child !== null) { + child.return = node; + node = child; + continue; + } - { - ReactStrictModeWarnings.discardPendingWarnings(); + if (node === finishedWork) { + return true; + } + + while (node.sibling === null) { + if (node.return === null || node.return === finishedWork) { + return true; } - return rootWorkInProgress; + node = node.return; } - function resetSuspendedWorkLoopOnUnwind(fiber) { - // Reset module-level state that was set during the render phase. - resetContextDependencies(); - resetHooksOnUnwind(fiber); - resetChildReconcilerOnUnwind(); - } + node.sibling.return = node.return; + node = node.sibling; + } // Flow doesn't know this is unreachable, but eslint does + // eslint-disable-next-line no-unreachable - function handleThrow(root, thrownValue) { - // A component threw an exception. Usually this is because it suspended, but - // it also includes regular program errors. - // - // We're either going to unwind the stack to show a Suspense or error - // boundary, or we're going to replay the component again. Like after a - // promise resolves. - // - // Until we decide whether we're going to unwind or replay, we should preserve - // the current state of the work loop without resetting anything. - // - // If we do decide to unwind the stack, module-level variables will be reset - // in resetSuspendedWorkLoopOnUnwind. - // These should be reset immediately because they're only supposed to be set - // when React is executing user code. - resetHooksAfterThrow(); - resetCurrentFiber(); - { - ReactSharedInternals.owner = null; - } - - if (thrownValue === SuspenseException) { - // This is a special type of exception used for Suspense. For historical - // reasons, the rest of the Suspense implementation expects the thrown value - // to be a thenable, because before `use` existed that was the (unstable) - // API for suspending. This implementation detail can change later, once we - // deprecate the old API in favor of `use`. - thrownValue = getSuspendedThenable(); - workInProgressSuspendedReason = - shouldRemainOnPreviousScreen() && // Check if there are other pending updates that might possibly unblock this - // component from suspending. This mirrors the check in - // renderDidSuspendDelayIfPossible. We should attempt to unify them somehow. - // TODO: Consider unwinding immediately, using the - // SuspendedOnHydration mechanism. - !includesNonIdleWork(workInProgressRootSkippedLanes) && - !includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes) // Suspend work loop until data resolves - ? SuspendedOnData // Don't suspend work loop, except to check if the data has - : // immediately resolved (i.e. in a microtask). Otherwise, trigger the - // nearest Suspense fallback. - SuspendedOnImmediate; - } else if (thrownValue === SuspenseyCommitException) { - thrownValue = getSuspendedThenable(); - workInProgressSuspendedReason = SuspendedOnInstance; - } else if (thrownValue === SelectiveHydrationException) { - // An update flowed into a dehydrated boundary. Before we can apply the - // update, we need to finish hydrating. Interrupt the work-in-progress - // render so we can restart at the hydration lane. - // - // The ideal implementation would be able to switch contexts without - // unwinding the current stack. - // - // We could name this something more general but as of now it's the only - // case where we think this should happen. - workInProgressSuspendedReason = SuspendedOnHydration; - } else { - // This is a regular error. - var isWakeable = - thrownValue !== null && - typeof thrownValue === "object" && - typeof thrownValue.then === "function"; - workInProgressSuspendedReason = isWakeable // A wakeable object was thrown by a legacy Suspense implementation. - ? // This has slightly different behavior than suspending with `use`. - SuspendedOnDeprecatedThrowPromise // This is a regular error. If something earlier in the component already - : // suspended, we must clear the thenable state to unblock the work loop. - SuspendedOnError; - } - - workInProgressThrownValue = thrownValue; - var erroredWork = workInProgress; - - if (erroredWork === null) { - // This is a fatal error - workInProgressRootExitStatus = RootFatalErrored; - logUncaughtError( - root, - createCapturedValueAtFiber(thrownValue, root.current) - ); - return; - } + return true; +} // The extra indirections around markRootUpdated and markRootSuspended is +// needed to avoid a circular dependency between this module and +// ReactFiberLane. There's probably a better way to split up these modules and +// avoid this problem. Perhaps all the root-marking functions should move into +// the work loop. - if (erroredWork.mode & ProfileMode) { - // Record the time spent rendering before an error was thrown. This - // avoids inaccurate Profiler durations in the case of a - // suspended render. - stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true); - } - { - markComponentRenderStopped(); +function markRootUpdated(root, updatedLanes) { + markRootUpdated$1(root, updatedLanes); +} - switch (workInProgressSuspendedReason) { - case SuspendedOnError: { - markComponentErrored( - erroredWork, - thrownValue, - workInProgressRootRenderLanes - ); - break; - } +function markRootPinged(root, pingedLanes) { + markRootPinged$1(root, pingedLanes); +} - case SuspendedOnData: - case SuspendedOnImmediate: - case SuspendedOnDeprecatedThrowPromise: - case SuspendedAndReadyToContinue: { - var wakeable = thrownValue; - markComponentSuspended( - erroredWork, - wakeable, - workInProgressRootRenderLanes - ); - break; - } - } +function markRootSuspended(root, suspendedLanes, spawnedLane) { + // When suspending, we should always exclude lanes that were pinged or (more + // rarely, since we try to avoid it) updated during the render phase. + suspendedLanes = removeLanes(suspendedLanes, workInProgressRootPingedLanes); + suspendedLanes = removeLanes(suspendedLanes, workInProgressRootInterleavedUpdatedLanes); + + markRootSuspended$1(root, suspendedLanes, spawnedLane); +} // This is the entry point for synchronous tasks that don't go +// through Scheduler + + +function performSyncWorkOnRoot(root, lanes) { + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } + + var didFlushPassiveEffects = flushPassiveEffects(); + + if (didFlushPassiveEffects) { + // If passive effects were flushed, exit to the outer work loop in the root + // scheduler, so we can recompute the priority. + // TODO: We don't actually need this `ensureRootIsScheduled` call because + // this path is only reachable if the root is already part of the schedule. + // I'm including it only for consistency with the other exit points from + // this function. Can address in a subsequent refactor. + ensureRootIsScheduled(root); + return null; + } + + { + syncNestedUpdateFlag(); + } + + var exitStatus = renderRootSync(root, lanes); + + if ((root.tag !== LegacyRoot) && exitStatus === RootErrored) { + // If something threw an error, try rendering one more time. We'll render + // synchronously to block concurrent data mutations, and we'll includes + // all pending updates are included. If it still fails after the second + // attempt, we'll give up and commit the resulting tree. + var originallyAttemptedLanes = lanes; + var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root, originallyAttemptedLanes); + + if (errorRetryLanes !== NoLanes) { + lanes = errorRetryLanes; + exitStatus = recoverFromConcurrentError(root, originallyAttemptedLanes, errorRetryLanes); + } + } + + if (exitStatus === RootFatalErrored) { + prepareFreshStack(root, NoLanes); + markRootSuspended(root, lanes, NoLane); + ensureRootIsScheduled(root); + return null; + } + + if (exitStatus === RootDidNotComplete) { + // The render unwound without completing the tree. This happens in special + // cases where need to exit the current render without producing a + // consistent tree or committing. + markRootSuspended(root, lanes, workInProgressDeferredLane); + ensureRootIsScheduled(root); + return null; + } // We now have a consistent tree. Because this is a sync render, we + // will commit it even if something suspended. + + + var finishedWork = root.current.alternate; + root.finishedWork = finishedWork; + root.finishedLanes = lanes; + commitRoot(root, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, workInProgressDeferredLane); // Before exiting, make sure there's a callback scheduled for the next + // pending level. + + ensureRootIsScheduled(root); + return null; +} +function getExecutionContext() { + return executionContext; +} +function batchedUpdates(fn, a) { + { + var prevExecutionContext = executionContext; + executionContext |= BatchedContext; + + try { + return fn(a); + } finally { + executionContext = prevExecutionContext; // If there were legacy sync updates, flush them at the end of the outer + // most batchedUpdates-like method. + + if (executionContext === NoContext && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. + !(ReactSharedInternals.isBatchingLegacy)) { + resetRenderTimer(); + flushSyncWorkOnLegacyRootsOnly(); } } + } +} +// Warning, this opts-out of checking the function body. +// eslint-disable-next-line no-unused-vars +// eslint-disable-next-line no-redeclare +// eslint-disable-next-line no-redeclare + +function flushSyncFromReconciler(fn) { + // In legacy mode, we flush pending passive effects at the beginning of the + // next event, not at the end of the previous one. + if (rootWithPendingPassiveEffects !== null && !disableLegacyMode && rootWithPendingPassiveEffects.tag === LegacyRoot && (executionContext & (RenderContext | CommitContext)) === NoContext) { + flushPassiveEffects(); + } + + var prevExecutionContext = executionContext; + executionContext |= BatchedContext; + var prevTransition = ReactSharedInternals.T; + var previousPriority = getCurrentUpdatePriority(); + + try { + setCurrentUpdatePriority(DiscreteEventPriority); + ReactSharedInternals.T = null; + + if (fn) { + return fn(); + } else { + return undefined; + } + } finally { + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; + executionContext = prevExecutionContext; // Flush the immediate callbacks that were scheduled during this batch. + // Note that this will happen even if batchedUpdates is higher up + // the stack. + + if ((executionContext & (RenderContext | CommitContext)) === NoContext) { + flushSyncWorkOnAllRoots(); + } + } +} // If called outside of a render or commit will flush all sync work on all roots +// Returns whether the the call was during a render or not - function shouldRemainOnPreviousScreen() { - // This is asking whether it's better to suspend the transition and remain - // on the previous screen, versus showing a fallback as soon as possible. It - // takes into account both the priority of render and also whether showing a - // fallback would produce a desirable user experience. - var handler = getSuspenseHandler(); +function flushSyncWork() { + if ((executionContext & (RenderContext | CommitContext)) === NoContext) { + flushSyncWorkOnAllRoots(); + return false; + } - if (handler === null) { - // There's no Suspense boundary that can provide a fallback. We have no - // choice but to remain on the previous screen. - // NOTE: We do this even for sync updates, for lack of any better option. In - // the future, we may change how we handle this, like by putting the whole - // root into a "detached" mode. - return true; - } // TODO: Once `use` has fully replaced the `throw promise` pattern, we should - // be able to remove the equivalent check in finishConcurrentRender, and rely - // just on this one. - - if (includesOnlyTransitions(workInProgressRootRenderLanes)) { - if (getShellBoundary() === null) { - // We're rendering inside the "shell" of the app. Activating the nearest - // fallback would cause visible content to disappear. It's better to - // suspend the transition and remain on the previous screen. - return true; - } else { - // We're rendering content that wasn't part of the previous screen. - // Rather than block the transition, it's better to show a fallback as - // soon as possible. The appearance of any nested fallbacks will be - // throttled to avoid jank. - return false; - } - } + return true; +} +// hidden subtree. The stack logic is managed there because that's the only +// place that ever modifies it. Which module it lives in doesn't matter for +// performance because this function will get inlined regardless - if ( - includesOnlyRetries(workInProgressRootRenderLanes) || // In this context, an OffscreenLane counts as a Retry - // TODO: It's become increasingly clear that Retries and Offscreen are - // deeply connected. They probably can be unified further. - includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) - ) { - // During a retry, we can suspend rendering if the nearest Suspense boundary - // is the boundary of the "shell", because we're guaranteed not to block - // any new content from appearing. - // - // The reason we must check if this is a retry is because it guarantees - // that suspending the work loop won't block an actual update, because - // retries don't "update" anything; they fill in fallbacks that were left - // behind by a previous transition. - return handler === getShellBoundary(); - } // For all other Lanes besides Transitions and Retries, we should not wait - // for the data to load. +function setEntangledRenderLanes(newEntangledRenderLanes) { + entangledRenderLanes = newEntangledRenderLanes; +} +function getEntangledRenderLanes() { + return entangledRenderLanes; +} - return false; - } +function resetWorkInProgressStack() { + if (workInProgress === null) return; + var interruptedWork; + + if (workInProgressSuspendedReason === NotSuspended) { + // Normal case. Work-in-progress hasn't started yet. Unwind all + // its parents. + interruptedWork = workInProgress.return; + } else { + // Work-in-progress is in suspended state. Reset the work loop and unwind + // both the suspended fiber and all its parents. + resetSuspendedWorkLoopOnUnwind(workInProgress); + interruptedWork = workInProgress; + } + + while (interruptedWork !== null) { + var current = interruptedWork.alternate; + unwindInterruptedWork(current, interruptedWork); + interruptedWork = interruptedWork.return; + } + + workInProgress = null; +} - function pushDispatcher(container) { - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = ContextOnlyDispatcher; +function prepareFreshStack(root, lanes) { + root.finishedWork = null; + root.finishedLanes = NoLanes; + var timeoutHandle = root.timeoutHandle; + + if (timeoutHandle !== noTimeout) { + // The root previous suspended and scheduled a timeout to commit a fallback + // state. Now that we have additional work, cancel the timeout. + root.timeoutHandle = noTimeout; // $FlowFixMe[incompatible-call] Complains noTimeout is not a TimeoutID, despite the check above + + cancelTimeout(timeoutHandle); + } + + var cancelPendingCommit = root.cancelPendingCommit; + + if (cancelPendingCommit !== null) { + root.cancelPendingCommit = null; + cancelPendingCommit(); + } + + resetWorkInProgressStack(); + workInProgressRoot = root; + var rootWorkInProgress = createWorkInProgress(root.current, null); + workInProgress = rootWorkInProgress; + workInProgressRootRenderLanes = lanes; + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + workInProgressRootDidAttachPingListener = false; + workInProgressRootExitStatus = RootInProgress; + workInProgressRootSkippedLanes = NoLanes; + workInProgressRootInterleavedUpdatedLanes = NoLanes; + workInProgressRootPingedLanes = NoLanes; + workInProgressDeferredLane = NoLane; + workInProgressRootConcurrentErrors = null; + workInProgressRootRecoverableErrors = null; + workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Get the lanes that are entangled with whatever we're about to render. We + // track these separately so we can distinguish the priority of the render + // task from the priority of the lanes it is entangled with. For example, a + // transition may not be allowed to finish unless it includes the Sync lane, + // which is currently suspended. We should be able to render the Transition + // and Sync lane in the same batch, but at Transition priority, because the + // Sync lane already suspended. + + entangledRenderLanes = getEntangledLanes(root, lanes); + finishQueueingConcurrentUpdates(); + + { + ReactStrictModeWarnings.discardPendingWarnings(); + } + + return rootWorkInProgress; +} - if (prevDispatcher === null) { - // The React isomorphic package does not include a default dispatcher. - // Instead the first renderer will lazily attach one, in order to give - // nicer error messages. - return ContextOnlyDispatcher; - } else { - return prevDispatcher; - } - } +function resetSuspendedWorkLoopOnUnwind(fiber) { + // Reset module-level state that was set during the render phase. + resetContextDependencies(); + resetHooksOnUnwind(fiber); + resetChildReconcilerOnUnwind(); +} - function popDispatcher(prevDispatcher) { - ReactSharedInternals.H = prevDispatcher; - } +function handleThrow(root, thrownValue) { + // A component threw an exception. Usually this is because it suspended, but + // it also includes regular program errors. + // + // We're either going to unwind the stack to show a Suspense or error + // boundary, or we're going to replay the component again. Like after a + // promise resolves. + // + // Until we decide whether we're going to unwind or replay, we should preserve + // the current state of the work loop without resetting anything. + // + // If we do decide to unwind the stack, module-level variables will be reset + // in resetSuspendedWorkLoopOnUnwind. + // These should be reset immediately because they're only supposed to be set + // when React is executing user code. + resetHooksAfterThrow(); + resetCurrentFiber(); + + { + ReactSharedInternals.owner = null; + } + + if (thrownValue === SuspenseException) { + // This is a special type of exception used for Suspense. For historical + // reasons, the rest of the Suspense implementation expects the thrown value + // to be a thenable, because before `use` existed that was the (unstable) + // API for suspending. This implementation detail can change later, once we + // deprecate the old API in favor of `use`. + thrownValue = getSuspendedThenable(); + workInProgressSuspendedReason = shouldRemainOnPreviousScreen() && // Check if there are other pending updates that might possibly unblock this + // component from suspending. This mirrors the check in + // renderDidSuspendDelayIfPossible. We should attempt to unify them somehow. + // TODO: Consider unwinding immediately, using the + // SuspendedOnHydration mechanism. + !includesNonIdleWork(workInProgressRootSkippedLanes) && !includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes) ? // Suspend work loop until data resolves + SuspendedOnData : // Don't suspend work loop, except to check if the data has + // immediately resolved (i.e. in a microtask). Otherwise, trigger the + // nearest Suspense fallback. + SuspendedOnImmediate; + } else if (thrownValue === SuspenseyCommitException) { + thrownValue = getSuspendedThenable(); + workInProgressSuspendedReason = SuspendedOnInstance; + } else if (thrownValue === SelectiveHydrationException) { + // An update flowed into a dehydrated boundary. Before we can apply the + // update, we need to finish hydrating. Interrupt the work-in-progress + // render so we can restart at the hydration lane. + // + // The ideal implementation would be able to switch contexts without + // unwinding the current stack. + // + // We could name this something more general but as of now it's the only + // case where we think this should happen. + workInProgressSuspendedReason = SuspendedOnHydration; + } else { + // This is a regular error. + var isWakeable = thrownValue !== null && typeof thrownValue === 'object' && typeof thrownValue.then === 'function'; + workInProgressSuspendedReason = isWakeable ? // A wakeable object was thrown by a legacy Suspense implementation. + // This has slightly different behavior than suspending with `use`. + SuspendedOnDeprecatedThrowPromise : // This is a regular error. If something earlier in the component already + // suspended, we must clear the thenable state to unblock the work loop. + SuspendedOnError; + } + + workInProgressThrownValue = thrownValue; + var erroredWork = workInProgress; + + if (erroredWork === null) { + // This is a fatal error + workInProgressRootExitStatus = RootFatalErrored; + logUncaughtError(root, createCapturedValueAtFiber(thrownValue, root.current)); + return; + } + + if (erroredWork.mode & ProfileMode) { + // Record the time spent rendering before an error was thrown. This + // avoids inaccurate Profiler durations in the case of a + // suspended render. + stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true); + } + + { + markComponentRenderStopped(); + + switch (workInProgressSuspendedReason) { + case SuspendedOnError: + { + markComponentErrored(erroredWork, thrownValue, workInProgressRootRenderLanes); + break; + } - function pushCacheDispatcher() { - { - var prevCacheDispatcher = ReactSharedInternals.C; - ReactSharedInternals.C = DefaultCacheDispatcher; - return prevCacheDispatcher; - } + case SuspendedOnData: + case SuspendedOnImmediate: + case SuspendedOnDeprecatedThrowPromise: + case SuspendedAndReadyToContinue: + { + var wakeable = thrownValue; + markComponentSuspended(erroredWork, wakeable, workInProgressRootRenderLanes); + break; + } } + } +} - function popCacheDispatcher(prevCacheDispatcher) { - { - ReactSharedInternals.C = prevCacheDispatcher; - } +function shouldRemainOnPreviousScreen() { + // This is asking whether it's better to suspend the transition and remain + // on the previous screen, versus showing a fallback as soon as possible. It + // takes into account both the priority of render and also whether showing a + // fallback would produce a desirable user experience. + var handler = getSuspenseHandler(); + + if (handler === null) { + // There's no Suspense boundary that can provide a fallback. We have no + // choice but to remain on the previous screen. + // NOTE: We do this even for sync updates, for lack of any better option. In + // the future, we may change how we handle this, like by putting the whole + // root into a "detached" mode. + return true; + } // TODO: Once `use` has fully replaced the `throw promise` pattern, we should + // be able to remove the equivalent check in finishConcurrentRender, and rely + // just on this one. + + + if (includesOnlyTransitions(workInProgressRootRenderLanes)) { + if (getShellBoundary() === null) { + // We're rendering inside the "shell" of the app. Activating the nearest + // fallback would cause visible content to disappear. It's better to + // suspend the transition and remain on the previous screen. + return true; + } else { + // We're rendering content that wasn't part of the previous screen. + // Rather than block the transition, it's better to show a fallback as + // soon as possible. The appearance of any nested fallbacks will be + // throttled to avoid jank. + return false; } + } - function markCommitTimeOfFallback() { - globalMostRecentFallbackTime = now$1(); - } - function markSkippedUpdateLanes(lane) { - workInProgressRootSkippedLanes = mergeLanes( - lane, - workInProgressRootSkippedLanes - ); - } - function renderDidSuspend() { - if (workInProgressRootExitStatus === RootInProgress) { - workInProgressRootExitStatus = RootSuspended; - } - } - function renderDidSuspendDelayIfPossible() { - workInProgressRootExitStatus = RootSuspendedWithDelay; // Check if there are updates that we skipped tree that might have unblocked - // this render. + if (includesOnlyRetries(workInProgressRootRenderLanes) || // In this context, an OffscreenLane counts as a Retry + // TODO: It's become increasingly clear that Retries and Offscreen are + // deeply connected. They probably can be unified further. + includesSomeLane(workInProgressRootRenderLanes, OffscreenLane)) { + // During a retry, we can suspend rendering if the nearest Suspense boundary + // is the boundary of the "shell", because we're guaranteed not to block + // any new content from appearing. + // + // The reason we must check if this is a retry is because it guarantees + // that suspending the work loop won't block an actual update, because + // retries don't "update" anything; they fill in fallbacks that were left + // behind by a previous transition. + return handler === getShellBoundary(); + } // For all other Lanes besides Transitions and Retries, we should not wait + // for the data to load. - if ( - (includesNonIdleWork(workInProgressRootSkippedLanes) || - includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes)) && - workInProgressRoot !== null - ) { - // Mark the current render as suspended so that we switch to working on - // the updates that were skipped. Usually we only suspend at the end of - // the render phase. - // TODO: We should probably always mark the root as suspended immediately - // (inside this function), since by suspending at the end of the render - // phase introduces a potential mistake where we suspend lanes that were - // pinged or updated while we were rendering. - // TODO: Consider unwinding immediately, using the - // SuspendedOnHydration mechanism. - markRootSuspended( - workInProgressRoot, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } - } - function renderDidError() { - if (workInProgressRootExitStatus !== RootSuspendedWithDelay) { - workInProgressRootExitStatus = RootErrored; - } - } - function queueConcurrentError(error) { - if (workInProgressRootConcurrentErrors === null) { - workInProgressRootConcurrentErrors = [error]; - } else { - workInProgressRootConcurrentErrors.push(error); - } - } // Called during render to determine if anything has suspended. - // Returns false if we're not sure. - - function renderHasNotSuspendedYet() { - // If something errored or completed, we can't really be sure, - // so those are false. - return workInProgressRootExitStatus === RootInProgress; - } // TODO: Over time, this function and renderRootConcurrent have become more - // and more similar. Not sure it makes sense to maintain forked paths. Consider - // unifying them again. - - function renderRootSync(root, lanes) { - var prevExecutionContext = executionContext; - executionContext |= RenderContext; - var prevDispatcher = pushDispatcher(); - var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack - // and prepare a fresh one. Otherwise we'll continue where we left off. - - if ( - workInProgressRoot !== root || - workInProgressRootRenderLanes !== lanes - ) { - workInProgressTransitions = getTransitionsForLanes(); - prepareFreshStack(root, lanes); - } - { - markRenderStarted(lanes); - } + return false; +} - var didSuspendInShell = false; +function pushDispatcher(container) { + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = ContextOnlyDispatcher; + + if (prevDispatcher === null) { + // The React isomorphic package does not include a default dispatcher. + // Instead the first renderer will lazily attach one, in order to give + // nicer error messages. + return ContextOnlyDispatcher; + } else { + return prevDispatcher; + } +} - outer: do { - try { - if ( - workInProgressSuspendedReason !== NotSuspended && - workInProgress !== null - ) { - // The work loop is suspended. During a synchronous render, we don't - // yield to the main thread. Immediately unwind the stack. This will - // trigger either a fallback or an error boundary. - // TODO: For discrete and "default" updates (anything that's not - // flushSync), we want to wait for the microtasks the flush before - // unwinding. Will probably implement this using renderRootConcurrent, - // or merge renderRootSync and renderRootConcurrent into the same - // function and fork the behavior some other way. - var unitOfWork = workInProgress; - var thrownValue = workInProgressThrownValue; - - switch (workInProgressSuspendedReason) { - case SuspendedOnHydration: { - // Selective hydration. An update flowed into a dehydrated tree. - // Interrupt the current render so the work loop can switch to the - // hydration lane. - resetWorkInProgressStack(); - workInProgressRootExitStatus = RootDidNotComplete; - break outer; - } +function popDispatcher(prevDispatcher) { + ReactSharedInternals.H = prevDispatcher; +} - case SuspendedOnImmediate: - case SuspendedOnData: { - if (!didSuspendInShell && getSuspenseHandler() === null) { - didSuspendInShell = true; - } // Intentional fallthrough - } +function pushCacheDispatcher() { + { + var prevCacheDispatcher = ReactSharedInternals.C; + ReactSharedInternals.C = DefaultCacheDispatcher; + return prevCacheDispatcher; + } +} - default: { - // Unwind then continue with the normal work loop. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } +function popCacheDispatcher(prevCacheDispatcher) { + { + ReactSharedInternals.C = prevCacheDispatcher; + } +} + +function markCommitTimeOfFallback() { + globalMostRecentFallbackTime = now$1(); +} +function markSkippedUpdateLanes(lane) { + workInProgressRootSkippedLanes = mergeLanes(lane, workInProgressRootSkippedLanes); +} +function renderDidSuspend() { + if (workInProgressRootExitStatus === RootInProgress) { + workInProgressRootExitStatus = RootSuspended; + } +} +function renderDidSuspendDelayIfPossible() { + workInProgressRootExitStatus = RootSuspendedWithDelay; // Check if there are updates that we skipped tree that might have unblocked + // this render. + + if ((includesNonIdleWork(workInProgressRootSkippedLanes) || includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes)) && workInProgressRoot !== null) { + // Mark the current render as suspended so that we switch to working on + // the updates that were skipped. Usually we only suspend at the end of + // the render phase. + // TODO: We should probably always mark the root as suspended immediately + // (inside this function), since by suspending at the end of the render + // phase introduces a potential mistake where we suspend lanes that were + // pinged or updated while we were rendering. + // TODO: Consider unwinding immediately, using the + // SuspendedOnHydration mechanism. + markRootSuspended(workInProgressRoot, workInProgressRootRenderLanes, workInProgressDeferredLane); + } +} +function renderDidError() { + if (workInProgressRootExitStatus !== RootSuspendedWithDelay) { + workInProgressRootExitStatus = RootErrored; + } +} +function queueConcurrentError(error) { + if (workInProgressRootConcurrentErrors === null) { + workInProgressRootConcurrentErrors = [error]; + } else { + workInProgressRootConcurrentErrors.push(error); + } +} // Called during render to determine if anything has suspended. +// Returns false if we're not sure. + +function renderHasNotSuspendedYet() { + // If something errored or completed, we can't really be sure, + // so those are false. + return workInProgressRootExitStatus === RootInProgress; +} // TODO: Over time, this function and renderRootConcurrent have become more +// and more similar. Not sure it makes sense to maintain forked paths. Consider +// unifying them again. + +function renderRootSync(root, lanes) { + var prevExecutionContext = executionContext; + executionContext |= RenderContext; + var prevDispatcher = pushDispatcher(); + var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack + // and prepare a fresh one. Otherwise we'll continue where we left off. + + if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { + + workInProgressTransitions = getTransitionsForLanes(); + prepareFreshStack(root, lanes); + } + + { + markRenderStarted(lanes); + } + + var didSuspendInShell = false; + + outer: do { + try { + if (workInProgressSuspendedReason !== NotSuspended && workInProgress !== null) { + // The work loop is suspended. During a synchronous render, we don't + // yield to the main thread. Immediately unwind the stack. This will + // trigger either a fallback or an error boundary. + // TODO: For discrete and "default" updates (anything that's not + // flushSync), we want to wait for the microtasks the flush before + // unwinding. Will probably implement this using renderRootConcurrent, + // or merge renderRootSync and renderRootConcurrent into the same + // function and fork the behavior some other way. + var unitOfWork = workInProgress; + var thrownValue = workInProgressThrownValue; + + switch (workInProgressSuspendedReason) { + case SuspendedOnHydration: + { + // Selective hydration. An update flowed into a dehydrated tree. + // Interrupt the current render so the work loop can switch to the + // hydration lane. + resetWorkInProgressStack(); + workInProgressRootExitStatus = RootDidNotComplete; + break outer; } - } - workLoopSync(); - break; - } catch (thrownValue) { - handleThrow(root, thrownValue); - } - } while (true); // Check if something suspended in the shell. We use this to detect an - // infinite ping loop caused by an uncached promise. - // - // Only increment this counter once per synchronous render attempt across the - // whole tree. Even if there are many sibling components that suspend, this - // counter only gets incremented once. + case SuspendedOnImmediate: + case SuspendedOnData: + { + if (!didSuspendInShell && getSuspenseHandler() === null) { + didSuspendInShell = true; + } // Intentional fallthrough + + } - if (didSuspendInShell) { - root.shellSuspendCounter++; + default: + { + // Unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } + } } - resetContextDependencies(); - executionContext = prevExecutionContext; - popDispatcher(prevDispatcher); - popCacheDispatcher(prevCacheDispatcher); + workLoopSync(); + break; + } catch (thrownValue) { + handleThrow(root, thrownValue); + } + } while (true); // Check if something suspended in the shell. We use this to detect an + // infinite ping loop caused by an uncached promise. + // + // Only increment this counter once per synchronous render attempt across the + // whole tree. Even if there are many sibling components that suspend, this + // counter only gets incremented once. - if (workInProgress !== null) { - // This is a sync render, so we should have finished the whole tree. - throw new Error( - "Cannot commit an incomplete root. This error is likely caused by a " + - "bug in React. Please file an issue." - ); - } - { - markRenderStopped(); - } // Set this to null to indicate there's no in-progress render. + if (didSuspendInShell) { + root.shellSuspendCounter++; + } - workInProgressRoot = null; - workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. + resetContextDependencies(); + executionContext = prevExecutionContext; + popDispatcher(prevDispatcher); + popCacheDispatcher(prevCacheDispatcher); - finishQueueingConcurrentUpdates(); - return workInProgressRootExitStatus; - } // The work loop is an extremely hot path. Tell Closure not to inline it. + if (workInProgress !== null) { + // This is a sync render, so we should have finished the whole tree. + throw new Error('Cannot commit an incomplete root. This error is likely caused by a ' + 'bug in React. Please file an issue.'); + } - /** @noinline */ + { + markRenderStopped(); + } // Set this to null to indicate there's no in-progress render. - function workLoopSync() { - // Perform work without checking if we need to yield between fiber. - while (workInProgress !== null) { - performUnitOfWork(workInProgress); - } - } - function renderRootConcurrent(root, lanes) { - var prevExecutionContext = executionContext; - executionContext |= RenderContext; - var prevDispatcher = pushDispatcher(); - var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack - // and prepare a fresh one. Otherwise we'll continue where we left off. + workInProgressRoot = null; + workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. - if ( - workInProgressRoot !== root || - workInProgressRootRenderLanes !== lanes - ) { - workInProgressTransitions = getTransitionsForLanes(); - resetRenderTimer(); - prepareFreshStack(root, lanes); - } + finishQueueingConcurrentUpdates(); + return workInProgressRootExitStatus; +} // The work loop is an extremely hot path. Tell Closure not to inline it. - { - markRenderStarted(lanes); - } +/** @noinline */ - outer: do { - try { - if ( - workInProgressSuspendedReason !== NotSuspended && - workInProgress !== null - ) { - // The work loop is suspended. We need to either unwind the stack or - // replay the suspended component. - var unitOfWork = workInProgress; - var thrownValue = workInProgressThrownValue; - - resumeOrUnwind: switch (workInProgressSuspendedReason) { - case SuspendedOnError: { - // Unwind then continue with the normal work loop. + +function workLoopSync() { + // Perform work without checking if we need to yield between fiber. + while (workInProgress !== null) { + performUnitOfWork(workInProgress); + } +} + +function renderRootConcurrent(root, lanes) { + var prevExecutionContext = executionContext; + executionContext |= RenderContext; + var prevDispatcher = pushDispatcher(); + var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack + // and prepare a fresh one. Otherwise we'll continue where we left off. + + if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { + + workInProgressTransitions = getTransitionsForLanes(); + resetRenderTimer(); + prepareFreshStack(root, lanes); + } + + { + markRenderStarted(lanes); + } + + outer: do { + try { + if (workInProgressSuspendedReason !== NotSuspended && workInProgress !== null) { + // The work loop is suspended. We need to either unwind the stack or + // replay the suspended component. + var unitOfWork = workInProgress; + var thrownValue = workInProgressThrownValue; + + resumeOrUnwind: switch (workInProgressSuspendedReason) { + case SuspendedOnError: + { + // Unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } + + case SuspendedOnData: + { + var thenable = thrownValue; + + if (isThenableResolved(thenable)) { + // The data resolved. Try rendering the component again. workInProgressSuspendedReason = NotSuspended; workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + replaySuspendedUnitOfWork(unitOfWork); break; - } + } // The work loop is suspended on data. We should wait for it to + // resolve before continuing to render. + // TODO: Handle the case where the promise resolves synchronously. + // Usually this is handled when we instrument the promise to add a + // `status` field, but if the promise already has a status, we won't + // have added a listener until right here. - case SuspendedOnData: { - var thenable = thrownValue; - if (isThenableResolved(thenable)) { - // The data resolved. Try rendering the component again. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - replaySuspendedUnitOfWork(unitOfWork); - break; - } // The work loop is suspended on data. We should wait for it to - // resolve before continuing to render. - // TODO: Handle the case where the promise resolves synchronously. - // Usually this is handled when we instrument the promise to add a - // `status` field, but if the promise already has a status, we won't - // have added a listener until right here. - - var onResolution = function () { - // Check if the root is still suspended on this promise. - if ( - workInProgressSuspendedReason === SuspendedOnData && - workInProgressRoot === root - ) { - // Mark the root as ready to continue rendering. - workInProgressSuspendedReason = SuspendedAndReadyToContinue; - } // Ensure the root is scheduled. We should do this even if we're - // currently working on a different root, so that we resume - // rendering later. - - ensureRootIsScheduled(root); - }; - - thenable.then(onResolution, onResolution); - break outer; - } + var onResolution = function () { + // Check if the root is still suspended on this promise. + if (workInProgressSuspendedReason === SuspendedOnData && workInProgressRoot === root) { + // Mark the root as ready to continue rendering. + workInProgressSuspendedReason = SuspendedAndReadyToContinue; + } // Ensure the root is scheduled. We should do this even if we're + // currently working on a different root, so that we resume + // rendering later. - case SuspendedOnImmediate: { - // If this fiber just suspended, it's possible the data is already - // cached. Yield to the main thread to give it a chance to ping. If - // it does, we can retry immediately without unwinding the stack. - workInProgressSuspendedReason = SuspendedAndReadyToContinue; - break outer; - } - case SuspendedOnInstance: { - workInProgressSuspendedReason = - SuspendedOnInstanceAndReadyToContinue; - break outer; - } + ensureRootIsScheduled(root); + }; + + thenable.then(onResolution, onResolution); + break outer; + } - case SuspendedAndReadyToContinue: { - var _thenable = thrownValue; + case SuspendedOnImmediate: + { + // If this fiber just suspended, it's possible the data is already + // cached. Yield to the main thread to give it a chance to ping. If + // it does, we can retry immediately without unwinding the stack. + workInProgressSuspendedReason = SuspendedAndReadyToContinue; + break outer; + } - if (isThenableResolved(_thenable)) { - // The data resolved. Try rendering the component again. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - replaySuspendedUnitOfWork(unitOfWork); - } else { - // Otherwise, unwind then continue with the normal work loop. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - } + case SuspendedOnInstance: + { + workInProgressSuspendedReason = SuspendedOnInstanceAndReadyToContinue; + break outer; + } - break; + case SuspendedAndReadyToContinue: + { + var _thenable = thrownValue; + + if (isThenableResolved(_thenable)) { + // The data resolved. Try rendering the component again. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + replaySuspendedUnitOfWork(unitOfWork); + } else { + // Otherwise, unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); } - case SuspendedOnInstanceAndReadyToContinue: { - switch (workInProgress.tag) { - case HostComponent: - case HostHoistable: - case HostSingleton: { + break; + } + + case SuspendedOnInstanceAndReadyToContinue: + { + switch (workInProgress.tag) { + case HostComponent: + case HostHoistable: + case HostSingleton: + { // Before unwinding the stack, check one more time if the // instance is ready. It may have loaded when React yielded to // the main thread. @@ -23981,3891 +20586,3431 @@ if (__DEV__) { break; } - default: { + default: + { // This will fail gracefully but it's not correct, so log a // warning in dev. if (true) { - error( - "Unexpected type of fiber triggered a suspensey commit. " + - "This is a bug in React." - ); + error('Unexpected type of fiber triggered a suspensey commit. ' + 'This is a bug in React.'); } break; } - } // Otherwise, unwind then continue with the normal work loop. - - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } - - case SuspendedOnDeprecatedThrowPromise: { - // Suspended by an old implementation that uses the `throw promise` - // pattern. The newer replaying behavior can cause subtle issues - // like infinite ping loops. So we maintain the old behavior and - // always unwind. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } + } // Otherwise, unwind then continue with the normal work loop. - case SuspendedOnHydration: { - // Selective hydration. An update flowed into a dehydrated tree. - // Interrupt the current render so the work loop can switch to the - // hydration lane. - resetWorkInProgressStack(); - workInProgressRootExitStatus = RootDidNotComplete; - break outer; - } - default: { - throw new Error( - "Unexpected SuspendedReason. This is a bug in React." - ); - } + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; } - } - - if (true && ReactSharedInternals.actQueue !== null) { - // `act` special case: If we're inside an `act` scope, don't consult - // `shouldYield`. Always keep working until the render is complete. - // This is not just an optimization: in a unit test environment, we - // can't trust the result of `shouldYield`, because the host I/O is - // likely mocked. - workLoopSync(); - } else { - workLoopConcurrent(); - } - break; - } catch (thrownValue) { - handleThrow(root, thrownValue); - } - } while (true); + case SuspendedOnDeprecatedThrowPromise: + { + // Suspended by an old implementation that uses the `throw promise` + // pattern. The newer replaying behavior can cause subtle issues + // like infinite ping loops. So we maintain the old behavior and + // always unwind. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } - resetContextDependencies(); - popDispatcher(prevDispatcher); - popCacheDispatcher(prevCacheDispatcher); - executionContext = prevExecutionContext; + case SuspendedOnHydration: + { + // Selective hydration. An update flowed into a dehydrated tree. + // Interrupt the current render so the work loop can switch to the + // hydration lane. + resetWorkInProgressStack(); + workInProgressRootExitStatus = RootDidNotComplete; + break outer; + } - if (workInProgress !== null) { - // Still work remaining. - { - markRenderYielded(); + default: + { + throw new Error('Unexpected SuspendedReason. This is a bug in React.'); + } } + } - return RootInProgress; + if (true && ReactSharedInternals.actQueue !== null) { + // `act` special case: If we're inside an `act` scope, don't consult + // `shouldYield`. Always keep working until the render is complete. + // This is not just an optimization: in a unit test environment, we + // can't trust the result of `shouldYield`, because the host I/O is + // likely mocked. + workLoopSync(); } else { - // Completed the tree. - { - markRenderStopped(); - } // Set this to null to indicate there's no in-progress render. + workLoopConcurrent(); + } - workInProgressRoot = null; - workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. + break; + } catch (thrownValue) { + handleThrow(root, thrownValue); + } + } while (true); - finishQueueingConcurrentUpdates(); // Return the final exit status. + resetContextDependencies(); + popDispatcher(prevDispatcher); + popCacheDispatcher(prevCacheDispatcher); + executionContext = prevExecutionContext; - return workInProgressRootExitStatus; - } - } - /** @noinline */ - function workLoopConcurrent() { - // Perform work until Scheduler asks us to yield - while (workInProgress !== null && !shouldYield()) { - // $FlowFixMe[incompatible-call] found when upgrading Flow - performUnitOfWork(workInProgress); - } + if (workInProgress !== null) { + // Still work remaining. + { + markRenderYielded(); } - function performUnitOfWork(unitOfWork) { - // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. - var current = unitOfWork.alternate; - setCurrentFiber(unitOfWork); - var next; + return RootInProgress; + } else { + // Completed the tree. + { + markRenderStopped(); + } // Set this to null to indicate there's no in-progress render. - if ((unitOfWork.mode & ProfileMode) !== NoMode) { - startProfilerTimer(unitOfWork); - next = beginWork(current, unitOfWork, entangledRenderLanes); - stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); - } else { - next = beginWork(current, unitOfWork, entangledRenderLanes); - } - resetCurrentFiber(); - unitOfWork.memoizedProps = unitOfWork.pendingProps; + workInProgressRoot = null; + workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. - if (next === null) { - // If this doesn't spawn new work, complete the current work. - completeUnitOfWork(unitOfWork); - } else { - workInProgress = next; + finishQueueingConcurrentUpdates(); // Return the final exit status. + + return workInProgressRootExitStatus; + } +} +/** @noinline */ + + +function workLoopConcurrent() { + // Perform work until Scheduler asks us to yield + while (workInProgress !== null && !shouldYield()) { + // $FlowFixMe[incompatible-call] found when upgrading Flow + performUnitOfWork(workInProgress); + } +} + +function performUnitOfWork(unitOfWork) { + // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. + var current = unitOfWork.alternate; + setCurrentFiber(unitOfWork); + var next; + + if ((unitOfWork.mode & ProfileMode) !== NoMode) { + startProfilerTimer(unitOfWork); + next = beginWork(current, unitOfWork, entangledRenderLanes); + stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); + } else { + next = beginWork(current, unitOfWork, entangledRenderLanes); + } + + resetCurrentFiber(); + unitOfWork.memoizedProps = unitOfWork.pendingProps; + + if (next === null) { + // If this doesn't spawn new work, complete the current work. + completeUnitOfWork(unitOfWork); + } else { + workInProgress = next; + } + + { + ReactSharedInternals.owner = null; + } +} + +function replaySuspendedUnitOfWork(unitOfWork) { + // This is a fork of performUnitOfWork specifcally for replaying a fiber that + // just suspended. + // + var current = unitOfWork.alternate; + setCurrentFiber(unitOfWork); + var next; + setCurrentFiber(unitOfWork); + var isProfilingMode = (unitOfWork.mode & ProfileMode) !== NoMode; + + if (isProfilingMode) { + startProfilerTimer(unitOfWork); + } + + switch (unitOfWork.tag) { + case SimpleMemoComponent: + case FunctionComponent: + { + // Resolve `defaultProps`. This logic is copied from `beginWork`. + // TODO: Consider moving this switch statement into that module. Also, + // could maybe use this as an opportunity to say `use` doesn't work with + // `defaultProps` :) + var Component = unitOfWork.type; + var unresolvedProps = unitOfWork.pendingProps; + var resolvedProps = unitOfWork.elementType === Component ? unresolvedProps : resolveDefaultPropsOnNonClassComponent(Component, unresolvedProps); + var context; + + { + var unmaskedContext = getUnmaskedContext(unitOfWork, Component, true); + context = getMaskedContext(unitOfWork, unmaskedContext); + } + + next = replayFunctionComponent(current, unitOfWork, resolvedProps, Component, context, workInProgressRootRenderLanes); + break; } + case ForwardRef: { - ReactSharedInternals.owner = null; + // Resolve `defaultProps`. This logic is copied from `beginWork`. + // TODO: Consider moving this switch statement into that module. Also, + // could maybe use this as an opportunity to say `use` doesn't work with + // `defaultProps` :) + var _Component = unitOfWork.type.render; + var _unresolvedProps = unitOfWork.pendingProps; + + var _resolvedProps = unitOfWork.elementType === _Component ? _unresolvedProps : resolveDefaultPropsOnNonClassComponent(_Component, _unresolvedProps); + + next = replayFunctionComponent(current, unitOfWork, _resolvedProps, _Component, unitOfWork.ref, workInProgressRootRenderLanes); + break; } - } - function replaySuspendedUnitOfWork(unitOfWork) { - // This is a fork of performUnitOfWork specifcally for replaying a fiber that - // just suspended. - // - var current = unitOfWork.alternate; - setCurrentFiber(unitOfWork); - var next; - setCurrentFiber(unitOfWork); - var isProfilingMode = (unitOfWork.mode & ProfileMode) !== NoMode; + case HostComponent: + { + // Some host components are stateful (that's how we implement form + // actions) but we don't bother to reuse the memoized state because it's + // not worth the extra code. The main reason to reuse the previous hooks + // is to reuse uncached promises, but we happen to know that the only + // promises that a host component might suspend on are definitely cached + // because they are controlled by us. So don't bother. + resetHooksOnUnwind(unitOfWork); // Fallthrough to the next branch. + } - if (isProfilingMode) { - startProfilerTimer(unitOfWork); + default: + { + // Other types besides function components are reset completely before + // being replayed. Currently this only happens when a Usable type is + // reconciled — the reconciler will suspend. + // + // We reset the fiber back to its original state; however, this isn't + // a full "unwind" because we're going to reuse the promises that were + // reconciled previously. So it's intentional that we don't call + // resetSuspendedWorkLoopOnUnwind here. + unwindInterruptedWork(current, unitOfWork); + unitOfWork = workInProgress = resetWorkInProgress(unitOfWork, entangledRenderLanes); + next = beginWork(current, unitOfWork, entangledRenderLanes); + break; } + } - switch (unitOfWork.tag) { - case SimpleMemoComponent: - case FunctionComponent: { - // Resolve `defaultProps`. This logic is copied from `beginWork`. - // TODO: Consider moving this switch statement into that module. Also, - // could maybe use this as an opportunity to say `use` doesn't work with - // `defaultProps` :) - var Component = unitOfWork.type; - var unresolvedProps = unitOfWork.pendingProps; - var resolvedProps = - unitOfWork.elementType === Component - ? unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - Component, - unresolvedProps - ); - var context; + if (isProfilingMode) { + stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); + } // The begin phase finished successfully without suspending. Return to the + // normal work loop. - { - var unmaskedContext = getUnmaskedContext( - unitOfWork, - Component, - true - ); - context = getMaskedContext(unitOfWork, unmaskedContext); - } - next = replayFunctionComponent( - current, - unitOfWork, - resolvedProps, - Component, - context, - workInProgressRootRenderLanes - ); - break; - } + resetCurrentFiber(); + unitOfWork.memoizedProps = unitOfWork.pendingProps; - case ForwardRef: { - // Resolve `defaultProps`. This logic is copied from `beginWork`. - // TODO: Consider moving this switch statement into that module. Also, - // could maybe use this as an opportunity to say `use` doesn't work with - // `defaultProps` :) - var _Component = unitOfWork.type.render; - var _unresolvedProps = unitOfWork.pendingProps; - - var _resolvedProps = - unitOfWork.elementType === _Component - ? _unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - _Component, - _unresolvedProps - ); - - next = replayFunctionComponent( - current, - unitOfWork, - _resolvedProps, - _Component, - unitOfWork.ref, - workInProgressRootRenderLanes - ); - break; - } + if (next === null) { + // If this doesn't spawn new work, complete the current work. + completeUnitOfWork(unitOfWork); + } else { + workInProgress = next; + } - case HostComponent: { - // Some host components are stateful (that's how we implement form - // actions) but we don't bother to reuse the memoized state because it's - // not worth the extra code. The main reason to reuse the previous hooks - // is to reuse uncached promises, but we happen to know that the only - // promises that a host component might suspend on are definitely cached - // because they are controlled by us. So don't bother. - resetHooksOnUnwind(unitOfWork); // Fallthrough to the next branch. - } + { + ReactSharedInternals.owner = null; + } +} - default: { - // Other types besides function components are reset completely before - // being replayed. Currently this only happens when a Usable type is - // reconciled — the reconciler will suspend. - // - // We reset the fiber back to its original state; however, this isn't - // a full "unwind" because we're going to reuse the promises that were - // reconciled previously. So it's intentional that we don't call - // resetSuspendedWorkLoopOnUnwind here. - unwindInterruptedWork(current, unitOfWork); - unitOfWork = workInProgress = resetWorkInProgress( - unitOfWork, - entangledRenderLanes - ); - next = beginWork(current, unitOfWork, entangledRenderLanes); - break; - } - } +function throwAndUnwindWorkLoop(root, unitOfWork, thrownValue) { + // This is a fork of performUnitOfWork specifcally for unwinding a fiber + // that threw an exception. + // + // Return to the normal work loop. This will unwind the stack, and potentially + // result in showing a fallback. + resetSuspendedWorkLoopOnUnwind(unitOfWork); + var returnFiber = unitOfWork.return; + + try { + // Find and mark the nearest Suspense or error boundary that can handle + // this "exception". + var didFatal = throwException(root, returnFiber, unitOfWork, thrownValue, workInProgressRootRenderLanes); + + if (didFatal) { + panicOnRootError(root, thrownValue); + return; + } + } catch (error) { + // We had trouble processing the error. An example of this happening is + // when accessing the `componentDidCatch` property of an error boundary + // throws an error. A weird edge case. There's a regression test for this. + // To prevent an infinite loop, bubble the error up to the next parent. + if (returnFiber !== null) { + workInProgress = returnFiber; + throw error; + } else { + panicOnRootError(root, thrownValue); + return; + } + } + + if (unitOfWork.flags & Incomplete) { + // Unwind the stack until we reach the nearest boundary. + unwindUnitOfWork(unitOfWork); + } else { + // Although the fiber suspended, we're intentionally going to commit it in + // an inconsistent state. We can do this safely in cases where we know the + // inconsistent tree will be hidden. + // + // This currently only applies to Legacy Suspense implementation, but we may + // port a version of this to concurrent roots, too, when performing a + // synchronous render. Because that will allow us to mutate the tree as we + // go instead of buffering mutations until the end. Though it's unclear if + // this particular path is how that would be implemented. + completeUnitOfWork(unitOfWork); + } +} - if (isProfilingMode) { - stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); - } // The begin phase finished successfully without suspending. Return to the - // normal work loop. +function panicOnRootError(root, error) { + // There's no ancestor that can handle this exception. This should never + // happen because the root is supposed to capture all errors that weren't + // caught by an error boundary. This is a fatal error, or panic condition, + // because we've run out of ways to recover. + workInProgressRootExitStatus = RootFatalErrored; + logUncaughtError(root, createCapturedValueAtFiber(error, root.current)); // Set `workInProgress` to null. This represents advancing to the next + // sibling, or the parent if there are no siblings. But since the root + // has no siblings nor a parent, we set it to null. Usually this is + // handled by `completeUnitOfWork` or `unwindWork`, but since we're + // intentionally not calling those, we need set it here. + // TODO: Consider calling `unwindWork` to pop the contexts. + + workInProgress = null; +} - resetCurrentFiber(); - unitOfWork.memoizedProps = unitOfWork.pendingProps; +function completeUnitOfWork(unitOfWork) { + // Attempt to complete the current unit of work, then move to the next + // sibling. If there are no more siblings, return to the parent fiber. + var completedWork = unitOfWork; - if (next === null) { - // If this doesn't spawn new work, complete the current work. - completeUnitOfWork(unitOfWork); - } else { - workInProgress = next; + do { + { + if ((completedWork.flags & Incomplete) !== NoFlags$1) { + // NOTE: If we re-enable sibling prerendering in some cases, this branch + // is where we would switch to the unwinding path. + error('Internal React error: Expected this fiber to be complete, but ' + "it isn't. It should have been unwound. This is a bug in React."); } + } // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. - { - ReactSharedInternals.owner = null; - } - } - function throwAndUnwindWorkLoop(root, unitOfWork, thrownValue) { - // This is a fork of performUnitOfWork specifcally for unwinding a fiber - // that threw an exception. - // - // Return to the normal work loop. This will unwind the stack, and potentially - // result in showing a fallback. - resetSuspendedWorkLoopOnUnwind(unitOfWork); - var returnFiber = unitOfWork.return; + var current = completedWork.alternate; + var returnFiber = completedWork.return; + setCurrentFiber(completedWork); + var next = void 0; - try { - // Find and mark the nearest Suspense or error boundary that can handle - // this "exception". - var didFatal = throwException( - root, - returnFiber, - unitOfWork, - thrownValue, - workInProgressRootRenderLanes - ); - - if (didFatal) { - panicOnRootError(root, thrownValue); - return; - } - } catch (error) { - // We had trouble processing the error. An example of this happening is - // when accessing the `componentDidCatch` property of an error boundary - // throws an error. A weird edge case. There's a regression test for this. - // To prevent an infinite loop, bubble the error up to the next parent. - if (returnFiber !== null) { - workInProgress = returnFiber; - throw error; - } else { - panicOnRootError(root, thrownValue); - return; - } - } + if ((completedWork.mode & ProfileMode) === NoMode) { + next = completeWork(current, completedWork, entangledRenderLanes); + } else { + startProfilerTimer(completedWork); + next = completeWork(current, completedWork, entangledRenderLanes); // Update render duration assuming we didn't error. - if (unitOfWork.flags & Incomplete) { - // Unwind the stack until we reach the nearest boundary. - unwindUnitOfWork(unitOfWork); - } else { - // Although the fiber suspended, we're intentionally going to commit it in - // an inconsistent state. We can do this safely in cases where we know the - // inconsistent tree will be hidden. - // - // This currently only applies to Legacy Suspense implementation, but we may - // port a version of this to concurrent roots, too, when performing a - // synchronous render. Because that will allow us to mutate the tree as we - // go instead of buffering mutations until the end. Though it's unclear if - // this particular path is how that would be implemented. - completeUnitOfWork(unitOfWork); - } + stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); } - function panicOnRootError(root, error) { - // There's no ancestor that can handle this exception. This should never - // happen because the root is supposed to capture all errors that weren't - // caught by an error boundary. This is a fatal error, or panic condition, - // because we've run out of ways to recover. - workInProgressRootExitStatus = RootFatalErrored; - logUncaughtError(root, createCapturedValueAtFiber(error, root.current)); // Set `workInProgress` to null. This represents advancing to the next - // sibling, or the parent if there are no siblings. But since the root - // has no siblings nor a parent, we set it to null. Usually this is - // handled by `completeUnitOfWork` or `unwindWork`, but since we're - // intentionally not calling those, we need set it here. - // TODO: Consider calling `unwindWork` to pop the contexts. + resetCurrentFiber(); - workInProgress = null; + if (next !== null) { + // Completing this fiber spawned new work. Work on that next. + workInProgress = next; + return; } - function completeUnitOfWork(unitOfWork) { - // Attempt to complete the current unit of work, then move to the next - // sibling. If there are no more siblings, return to the parent fiber. - var completedWork = unitOfWork; + var siblingFiber = completedWork.sibling; + + if (siblingFiber !== null) { + // If there is more work to do in this returnFiber, do that next. + workInProgress = siblingFiber; + return; + } // Otherwise, return to the parent + // $FlowFixMe[incompatible-type] we bail out when we get a null + + + completedWork = returnFiber; // Update the next thing we're working on in case something throws. + + workInProgress = completedWork; + } while (completedWork !== null); // We've reached the root. + + + if (workInProgressRootExitStatus === RootInProgress) { + workInProgressRootExitStatus = RootCompleted; + } +} + +function unwindUnitOfWork(unitOfWork) { + var incompleteWork = unitOfWork; + + do { + // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. + var current = incompleteWork.alternate; // This fiber did not complete because something threw. Pop values off + // the stack without entering the complete phase. If this is a boundary, + // capture values if possible. + + var next = unwindWork(current, incompleteWork); // Because this fiber did not complete, don't reset its lanes. + + if (next !== null) { + // Found a boundary that can handle this exception. Re-renter the + // begin phase. This branch will return us to the normal work loop. + // + // Since we're restarting, remove anything that is not a host effect + // from the effect tag. + next.flags &= HostEffectMask; + workInProgress = next; + return; + } // Keep unwinding until we reach either a boundary or the root. + + + if ((incompleteWork.mode & ProfileMode) !== NoMode) { + // Record the render duration for the fiber that errored. + stopProfilerTimerIfRunningAndRecordDelta(incompleteWork, false); // Include the time spent working on failed children before continuing. + + var actualDuration = incompleteWork.actualDuration; + var child = incompleteWork.child; + + while (child !== null) { + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + actualDuration += child.actualDuration; + child = child.sibling; + } - do { - { - if ((completedWork.flags & Incomplete) !== NoFlags$1) { - // NOTE: If we re-enable sibling prerendering in some cases, this branch - // is where we would switch to the unwinding path. - error( - "Internal React error: Expected this fiber to be complete, but " + - "it isn't. It should have been unwound. This is a bug in React." - ); - } - } // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. + incompleteWork.actualDuration = actualDuration; + } // TODO: Once we stop prerendering siblings, instead of resetting the parent + // of the node being unwound, we should be able to reset node itself as we + // unwind the stack. Saves an additional null check. - var current = completedWork.alternate; - var returnFiber = completedWork.return; - setCurrentFiber(completedWork); - var next = void 0; - if ((completedWork.mode & ProfileMode) === NoMode) { - next = completeWork(current, completedWork, entangledRenderLanes); - } else { - startProfilerTimer(completedWork); - next = completeWork(current, completedWork, entangledRenderLanes); // Update render duration assuming we didn't error. + var returnFiber = incompleteWork.return; - stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); - } + if (returnFiber !== null) { + // Mark the parent fiber as incomplete and clear its subtree flags. + // TODO: Once we stop prerendering siblings, we may be able to get rid of + // the Incomplete flag because unwinding to the nearest boundary will + // happen synchronously. + returnFiber.flags |= Incomplete; + returnFiber.subtreeFlags = NoFlags$1; + returnFiber.deletions = null; + } // NOTE: If we re-enable sibling prerendering in some cases, here we + // would switch to the normal completion path: check if a sibling + // exists, and if so, begin work on it. + // Otherwise, return to the parent + // $FlowFixMe[incompatible-type] we bail out when we get a null - resetCurrentFiber(); - if (next !== null) { - // Completing this fiber spawned new work. Work on that next. - workInProgress = next; - return; - } + incompleteWork = returnFiber; // Update the next thing we're working on in case something throws. - var siblingFiber = completedWork.sibling; + workInProgress = incompleteWork; + } while (incompleteWork !== null); // We've unwound all the way to the root. - if (siblingFiber !== null) { - // If there is more work to do in this returnFiber, do that next. - workInProgress = siblingFiber; - return; - } // Otherwise, return to the parent - // $FlowFixMe[incompatible-type] we bail out when we get a null - completedWork = returnFiber; // Update the next thing we're working on in case something throws. + workInProgressRootExitStatus = RootDidNotComplete; + workInProgress = null; +} - workInProgress = completedWork; - } while (completedWork !== null); // We've reached the root. +function commitRoot(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, spawnedLane) { + // TODO: This no longer makes any sense. We already wrap the mutation and + // layout phases. Should be able to remove. + var prevTransition = ReactSharedInternals.T; + var previousUpdateLanePriority = getCurrentUpdatePriority(); + + try { + setCurrentUpdatePriority(DiscreteEventPriority); + ReactSharedInternals.T = null; + commitRootImpl(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, previousUpdateLanePriority, spawnedLane); + } finally { + ReactSharedInternals.T = prevTransition; + setCurrentUpdatePriority(previousUpdateLanePriority); + } + + return null; +} - if (workInProgressRootExitStatus === RootInProgress) { - workInProgressRootExitStatus = RootCompleted; - } - } +function commitRootImpl(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, renderPriorityLevel, spawnedLane) { + do { + // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which + // means `flushPassiveEffects` will sometimes result in additional + // passive effects. So we need to keep flushing in a loop until there are + // no more pending effects. + // TODO: Might be better if `flushPassiveEffects` did not automatically + // flush synchronous work at the end, to avoid factoring hazards like this. + flushPassiveEffects(); + } while (rootWithPendingPassiveEffects !== null); - function unwindUnitOfWork(unitOfWork) { - var incompleteWork = unitOfWork; + flushRenderPhaseStrictModeWarningsInDEV(); - do { - // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. - var current = incompleteWork.alternate; // This fiber did not complete because something threw. Pop values off - // the stack without entering the complete phase. If this is a boundary, - // capture values if possible. - - var next = unwindWork(current, incompleteWork); // Because this fiber did not complete, don't reset its lanes. - - if (next !== null) { - // Found a boundary that can handle this exception. Re-renter the - // begin phase. This branch will return us to the normal work loop. - // - // Since we're restarting, remove anything that is not a host effect - // from the effect tag. - next.flags &= HostEffectMask; - workInProgress = next; - return; - } // Keep unwinding until we reach either a boundary or the root. + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } - if ((incompleteWork.mode & ProfileMode) !== NoMode) { - // Record the render duration for the fiber that errored. - stopProfilerTimerIfRunningAndRecordDelta(incompleteWork, false); // Include the time spent working on failed children before continuing. + var finishedWork = root.finishedWork; + var lanes = root.finishedLanes; - var actualDuration = incompleteWork.actualDuration; - var child = incompleteWork.child; + { + markCommitStarted(lanes); + } - while (child !== null) { - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - actualDuration += child.actualDuration; - child = child.sibling; - } + if (finishedWork === null) { - incompleteWork.actualDuration = actualDuration; - } // TODO: Once we stop prerendering siblings, instead of resetting the parent - // of the node being unwound, we should be able to reset node itself as we - // unwind the stack. Saves an additional null check. - - var returnFiber = incompleteWork.return; - - if (returnFiber !== null) { - // Mark the parent fiber as incomplete and clear its subtree flags. - // TODO: Once we stop prerendering siblings, we may be able to get rid of - // the Incomplete flag because unwinding to the nearest boundary will - // happen synchronously. - returnFiber.flags |= Incomplete; - returnFiber.subtreeFlags = NoFlags$1; - returnFiber.deletions = null; - } // NOTE: If we re-enable sibling prerendering in some cases, here we - // would switch to the normal completion path: check if a sibling - // exists, and if so, begin work on it. - // Otherwise, return to the parent - // $FlowFixMe[incompatible-type] we bail out when we get a null - - incompleteWork = returnFiber; // Update the next thing we're working on in case something throws. - - workInProgress = incompleteWork; - } while (incompleteWork !== null); // We've unwound all the way to the root. - - workInProgressRootExitStatus = RootDidNotComplete; - workInProgress = null; - } - - function commitRoot( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - spawnedLane - ) { - // TODO: This no longer makes any sense. We already wrap the mutation and - // layout phases. Should be able to remove. - var prevTransition = ReactSharedInternals.T; - var previousUpdateLanePriority = getCurrentUpdatePriority(); + { + markCommitStopped(); + } - try { - setCurrentUpdatePriority(DiscreteEventPriority); - ReactSharedInternals.T = null; - commitRootImpl( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - previousUpdateLanePriority, - spawnedLane - ); - } finally { - ReactSharedInternals.T = prevTransition; - setCurrentUpdatePriority(previousUpdateLanePriority); + return null; + } else { + { + if (lanes === NoLanes) { + error('root.finishedLanes should not be empty during a commit. This is a ' + 'bug in React.'); } - - return null; } + } - function commitRootImpl( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - renderPriorityLevel, - spawnedLane - ) { - do { - // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which - // means `flushPassiveEffects` will sometimes result in additional - // passive effects. So we need to keep flushing in a loop until there are - // no more pending effects. - // TODO: Might be better if `flushPassiveEffects` did not automatically - // flush synchronous work at the end, to avoid factoring hazards like this. - flushPassiveEffects(); - } while (rootWithPendingPassiveEffects !== null); + root.finishedWork = null; + root.finishedLanes = NoLanes; - flushRenderPhaseStrictModeWarningsInDEV(); + if (finishedWork === root.current) { + throw new Error('Cannot commit the same tree as before. This error is likely caused by ' + 'a bug in React. Please file an issue.'); + } // commitRoot never returns a continuation; it always finishes synchronously. + // So we can clear these now to allow a new callback to be scheduled. - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); - } - var finishedWork = root.finishedWork; - var lanes = root.finishedLanes; + root.callbackNode = null; + root.callbackPriority = NoLane; + root.cancelPendingCommit = null; // Check which lanes no longer have any work scheduled on them, and mark + // those as finished. - { - markCommitStarted(lanes); - } + var remainingLanes = mergeLanes(finishedWork.lanes, finishedWork.childLanes); // Make sure to account for lanes that were updated by a concurrent event + // during the render phase; don't mark them as finished. - if (finishedWork === null) { - { - markCommitStopped(); - } + var concurrentlyUpdatedLanes = getConcurrentlyUpdatedLanes(); + remainingLanes = mergeLanes(remainingLanes, concurrentlyUpdatedLanes); + markRootFinished(root, remainingLanes, spawnedLane); // Reset this before firing side effects so we can detect recursive updates. - return null; - } else { - { - if (lanes === NoLanes) { - error( - "root.finishedLanes should not be empty during a commit. This is a " + - "bug in React." - ); - } - } - } + if (root === workInProgressRoot) { + // We can reset these now that they are finished. + workInProgressRoot = null; + workInProgress = null; + workInProgressRootRenderLanes = NoLanes; + } // If there are pending passive effects, schedule a callback to process them. + // Do this as early as possible, so it is queued before anything else that + // might get scheduled in the commit phase. (See #16714.) + // TODO: Delete all other places that schedule the passive effect callback + // They're redundant. - root.finishedWork = null; - root.finishedLanes = NoLanes; - - if (finishedWork === root.current) { - throw new Error( - "Cannot commit the same tree as before. This error is likely caused by " + - "a bug in React. Please file an issue." - ); - } // commitRoot never returns a continuation; it always finishes synchronously. - // So we can clear these now to allow a new callback to be scheduled. - - root.callbackNode = null; - root.callbackPriority = NoLane; - root.cancelPendingCommit = null; // Check which lanes no longer have any work scheduled on them, and mark - // those as finished. - - var remainingLanes = mergeLanes( - finishedWork.lanes, - finishedWork.childLanes - ); // Make sure to account for lanes that were updated by a concurrent event - // during the render phase; don't mark them as finished. - - var concurrentlyUpdatedLanes = getConcurrentlyUpdatedLanes(); - remainingLanes = mergeLanes(remainingLanes, concurrentlyUpdatedLanes); - markRootFinished(root, remainingLanes, spawnedLane); // Reset this before firing side effects so we can detect recursive updates. - - if (root === workInProgressRoot) { - // We can reset these now that they are finished. - workInProgressRoot = null; - workInProgress = null; - workInProgressRootRenderLanes = NoLanes; - } // If there are pending passive effects, schedule a callback to process them. - // Do this as early as possible, so it is queued before anything else that - // might get scheduled in the commit phase. (See #16714.) - // TODO: Delete all other places that schedule the passive effect callback - // They're redundant. - - if ( - (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1 || - (finishedWork.flags & PassiveMask) !== NoFlags$1 - ) { - if (!rootDoesHavePassiveEffects) { - rootDoesHavePassiveEffects = true; - pendingPassiveEffectsRemainingLanes = remainingLanes; // workInProgressTransitions might be overwritten, so we want - // to store it in pendingPassiveTransitions until they get processed - // We need to pass this through as an argument to commitRoot - // because workInProgressTransitions might have changed between - // the previous render and commit if we throttle the commit - // with setTimeout - - pendingPassiveTransitions = transitions; - scheduleCallback(NormalPriority$1, function () { - flushPassiveEffects(); // This render triggered passive effects: release the root cache pool - // *after* passive effects fire to avoid freeing a cache pool that may - // be referenced by a node in the tree (HostRoot, Cache boundary etc) - return null; - }); - } - } // Check if there are any effects in the whole tree. - // TODO: This is left over from the effect list implementation, where we had - // to check for the existence of `firstEffect` to satisfy Flow. I think the - // only other reason this optimization exists is because it affects profiling. - // Reconsider whether this is necessary. - - var subtreeHasEffects = - (finishedWork.subtreeFlags & - (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== - NoFlags$1; - var rootHasEffect = - (finishedWork.flags & - (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== - NoFlags$1; - - if (subtreeHasEffects || rootHasEffect) { - var prevTransition = ReactSharedInternals.T; - ReactSharedInternals.T = null; - var previousPriority = getCurrentUpdatePriority(); - setCurrentUpdatePriority(DiscreteEventPriority); - var prevExecutionContext = executionContext; - executionContext |= CommitContext; // Reset this to null before calling lifecycles + if ((finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1 || (finishedWork.flags & PassiveMask) !== NoFlags$1) { + if (!rootDoesHavePassiveEffects) { + rootDoesHavePassiveEffects = true; + pendingPassiveEffectsRemainingLanes = remainingLanes; // workInProgressTransitions might be overwritten, so we want + // to store it in pendingPassiveTransitions until they get processed + // We need to pass this through as an argument to commitRoot + // because workInProgressTransitions might have changed between + // the previous render and commit if we throttle the commit + // with setTimeout - { - ReactSharedInternals.owner = null; - } // The commit phase is broken into several sub-phases. We do a separate pass - // of the effect list for each phase: all mutation effects come before all - // layout effects, and so on. - // The first phase a "before mutation" phase. We use this phase to read the - // state of the host tree right before we mutate it. This is where - // getSnapshotBeforeUpdate is called. + pendingPassiveTransitions = transitions; + scheduleCallback(NormalPriority$1, function () { + flushPassiveEffects(); // This render triggered passive effects: release the root cache pool + // *after* passive effects fire to avoid freeing a cache pool that may + // be referenced by a node in the tree (HostRoot, Cache boundary etc) + + return null; + }); + } + } // Check if there are any effects in the whole tree. + // TODO: This is left over from the effect list implementation, where we had + // to check for the existence of `firstEffect` to satisfy Flow. I think the + // only other reason this optimization exists is because it affects profiling. + // Reconsider whether this is necessary. - commitBeforeMutationEffects(root, finishedWork); - { - // Mark the current commit time to be shared by all Profilers in this - // batch. This enables them to be grouped later. - recordCommitTime(); - } // The next phase is the mutation phase, where we mutate the host tree. + var subtreeHasEffects = (finishedWork.subtreeFlags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags$1; + var rootHasEffect = (finishedWork.flags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags$1; - commitMutationEffects(root, finishedWork); - // the mutation phase, so that the previous tree is still current during - // componentWillUnmount, but before the layout phase, so that the finished - // work is current during componentDidMount/Update. + if (subtreeHasEffects || rootHasEffect) { + var prevTransition = ReactSharedInternals.T; + ReactSharedInternals.T = null; + var previousPriority = getCurrentUpdatePriority(); + setCurrentUpdatePriority(DiscreteEventPriority); + var prevExecutionContext = executionContext; + executionContext |= CommitContext; // Reset this to null before calling lifecycles - root.current = finishedWork; // The next phase is the layout phase, where we call effects that read + { + ReactSharedInternals.owner = null; + } // The commit phase is broken into several sub-phases. We do a separate pass + // of the effect list for each phase: all mutation effects come before all + // layout effects, and so on. + // The first phase a "before mutation" phase. We use this phase to read the + // state of the host tree right before we mutate it. This is where + // getSnapshotBeforeUpdate is called. - { - markLayoutEffectsStarted(lanes); - } - commitLayoutEffects(finishedWork, root); + commitBeforeMutationEffects(root, finishedWork); - { - markLayoutEffectsStopped(); - } // Tell Scheduler to yield at the end of the frame, so the browser has an - // opportunity to paint. + { + // Mark the current commit time to be shared by all Profilers in this + // batch. This enables them to be grouped later. + recordCommitTime(); + } // The next phase is the mutation phase, where we mutate the host tree. - requestPaint(); - executionContext = prevExecutionContext; // Reset the priority to the previous non-sync value. - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; - } else { - // No effects. - root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were - // no effects. - // TODO: Maybe there's a better way to report this. + commitMutationEffects(root, finishedWork); + // the mutation phase, so that the previous tree is still current during + // componentWillUnmount, but before the layout phase, so that the finished + // work is current during componentDidMount/Update. - { - recordCommitTime(); - } - } + root.current = finishedWork; // The next phase is the layout phase, where we call effects that read - var rootDidHavePassiveEffects = rootDoesHavePassiveEffects; + { + markLayoutEffectsStarted(lanes); + } - if (rootDoesHavePassiveEffects) { - // This commit has passive effects. Stash a reference to them. But don't - // schedule a callback until after flushing layout work. - rootDoesHavePassiveEffects = false; - rootWithPendingPassiveEffects = root; - pendingPassiveEffectsLanes = lanes; - } else { - // There were no passive effects, so we can immediately release the cache - // pool for this render. - releaseRootPooledCache(root, remainingLanes); + commitLayoutEffects(finishedWork, root); - { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = null; - } - } // Read this again, since an effect might have updated it + { + markLayoutEffectsStopped(); + } // Tell Scheduler to yield at the end of the frame, so the browser has an + // opportunity to paint. - remainingLanes = root.pendingLanes; // Check if there's remaining work on this root - // TODO: This is part of the `componentDidCatch` implementation. Its purpose - // is to detect whether something might have called setState inside - // `componentDidCatch`. The mechanism is known to be flawed because `setState` - // inside `componentDidCatch` is itself flawed — that's why we recommend - // `getDerivedStateFromError` instead. However, it could be improved by - // checking if remainingLanes includes Sync work, instead of whether there's - // any work remaining at all (which would also include stuff like Suspense - // retries or transitions). It's been like this for a while, though, so fixing - // it probably isn't that urgent. - if (remainingLanes === NoLanes) { - // If there's no remaining work, we can clear the set of already failed - // error boundaries. - legacyErrorBoundariesThatAlreadyFailed = null; - } + requestPaint(); + executionContext = prevExecutionContext; // Reset the priority to the previous non-sync value. - { - if (!rootDidHavePassiveEffects) { - commitDoubleInvokeEffectsInDEV(root, false); - } - } + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; + } else { + // No effects. + root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were + // no effects. + // TODO: Maybe there's a better way to report this. - onCommitRoot(finishedWork.stateNode, renderPriorityLevel); - // additional work on this root is scheduled. + { + recordCommitTime(); + } + } - ensureRootIsScheduled(root); + var rootDidHavePassiveEffects = rootDoesHavePassiveEffects; - if (recoverableErrors !== null) { - // There were errors during this render, but recovered from them without - // needing to surface it to the UI. We log them here. - var onRecoverableError = root.onRecoverableError; + if (rootDoesHavePassiveEffects) { + // This commit has passive effects. Stash a reference to them. But don't + // schedule a callback until after flushing layout work. + rootDoesHavePassiveEffects = false; + rootWithPendingPassiveEffects = root; + pendingPassiveEffectsLanes = lanes; + } else { + // There were no passive effects, so we can immediately release the cache + // pool for this render. + releaseRootPooledCache(root, remainingLanes); - for (var i = 0; i < recoverableErrors.length; i++) { - var recoverableError = recoverableErrors[i]; - var errorInfo = makeErrorInfo(recoverableError.stack); - onRecoverableError(recoverableError.value, errorInfo); - } - } // If the passive effects are the result of a discrete render, flush them - // synchronously at the end of the current task so that the result is - // immediately observable. Otherwise, we assume that they are not - // order-dependent and do not need to be observed by external systems, so we - // can wait until after paint. - // TODO: We can optimize this by not scheduling the callback earlier. Since we - // currently schedule the callback in multiple places, will wait until those - // are consolidated. - - if ( - includesSyncLane(pendingPassiveEffectsLanes) && - root.tag !== LegacyRoot - ) { - flushPassiveEffects(); - } // Read this again, since a passive effect might have updated it - - remainingLanes = root.pendingLanes; // Check if this render scheduled a cascading synchronous update. This is a - // heurstic to detect infinite update loops. We are intentionally excluding - // hydration lanes in this check, because render triggered by selective - // hydration is conceptually not an update. - - if ( - // Check if there was a recursive update spawned by this render, in either - // the render phase or the commit phase. We track these explicitly because - // we can't infer from the remaining lanes alone. - // Was the finished render the result of an update (not hydration)? - includesSomeLane(lanes, UpdateLanes) && // Did it schedule a sync update? - includesSomeLane(remainingLanes, SyncUpdateLanes) - ) { - { - markNestedUpdateScheduled(); - } // Count the number of times the root synchronously re-renders without - // finishing. If there are too many, it indicates an infinite update loop. + { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = null; + } + } // Read this again, since an effect might have updated it - if (root === rootWithNestedUpdates) { - nestedUpdateCount++; - } else { - nestedUpdateCount = 0; - rootWithNestedUpdates = root; - } - } else { - nestedUpdateCount = 0; - } // If layout work was scheduled, flush it now. - flushSyncWorkOnAllRoots(); + remainingLanes = root.pendingLanes; // Check if there's remaining work on this root + // TODO: This is part of the `componentDidCatch` implementation. Its purpose + // is to detect whether something might have called setState inside + // `componentDidCatch`. The mechanism is known to be flawed because `setState` + // inside `componentDidCatch` is itself flawed — that's why we recommend + // `getDerivedStateFromError` instead. However, it could be improved by + // checking if remainingLanes includes Sync work, instead of whether there's + // any work remaining at all (which would also include stuff like Suspense + // retries or transitions). It's been like this for a while, though, so fixing + // it probably isn't that urgent. - { - markCommitStopped(); - } + if (remainingLanes === NoLanes) { + // If there's no remaining work, we can clear the set of already failed + // error boundaries. + legacyErrorBoundariesThatAlreadyFailed = null; + } - return null; + { + if (!rootDidHavePassiveEffects) { + commitDoubleInvokeEffectsInDEV(root, false); } + } - function makeErrorInfo(componentStack) { - var errorInfo = { - componentStack: componentStack - }; + onCommitRoot(finishedWork.stateNode, renderPriorityLevel); + // additional work on this root is scheduled. - { - Object.defineProperty(errorInfo, "digest", { - get: function () { - error( - 'You are accessing "digest" from the errorInfo object passed to onRecoverableError.' + - " This property is no longer provided as part of errorInfo but can be accessed as a property" + - " of the Error instance itself." - ); - } - }); - } - return errorInfo; + ensureRootIsScheduled(root); + + if (recoverableErrors !== null) { + // There were errors during this render, but recovered from them without + // needing to surface it to the UI. We log them here. + var onRecoverableError = root.onRecoverableError; + + for (var i = 0; i < recoverableErrors.length; i++) { + var recoverableError = recoverableErrors[i]; + var errorInfo = makeErrorInfo(recoverableError.stack); + onRecoverableError(recoverableError.value, errorInfo); } + } // If the passive effects are the result of a discrete render, flush them + // synchronously at the end of the current task so that the result is + // immediately observable. Otherwise, we assume that they are not + // order-dependent and do not need to be observed by external systems, so we + // can wait until after paint. + // TODO: We can optimize this by not scheduling the callback earlier. Since we + // currently schedule the callback in multiple places, will wait until those + // are consolidated. - function releaseRootPooledCache(root, remainingLanes) { - { - var pooledCacheLanes = (root.pooledCacheLanes &= remainingLanes); - if (pooledCacheLanes === NoLanes) { - // None of the remaining work relies on the cache pool. Clear it so - // subsequent requests get a new cache - var pooledCache = root.pooledCache; + if (includesSyncLane(pendingPassiveEffectsLanes) && (root.tag !== LegacyRoot)) { + flushPassiveEffects(); + } // Read this again, since a passive effect might have updated it - if (pooledCache != null) { - root.pooledCache = null; - releaseCache(pooledCache); - } - } - } - } - function flushPassiveEffects() { - // Returns whether passive effects were flushed. - // TODO: Combine this check with the one in flushPassiveEFfectsImpl. We should - // probably just combine the two functions. I believe they were only separate - // in the first place because we used to wrap it with - // `Scheduler.runWithPriority`, which accepts a function. But now we track the - // priority within React itself, so we can mutate the variable directly. - if (rootWithPendingPassiveEffects !== null) { - // Cache the root since rootWithPendingPassiveEffects is cleared in - // flushPassiveEffectsImpl - var root = rootWithPendingPassiveEffects; // Cache and clear the remaining lanes flag; it must be reset since this - // method can be called from various places, not always from commitRoot - // where the remaining lanes are known - - var remainingLanes = pendingPassiveEffectsRemainingLanes; - pendingPassiveEffectsRemainingLanes = NoLanes; - var renderPriority = lanesToEventPriority(pendingPassiveEffectsLanes); - var priority = lowerEventPriority(DefaultEventPriority, renderPriority); - var prevTransition = ReactSharedInternals.T; - var previousPriority = getCurrentUpdatePriority(); + remainingLanes = root.pendingLanes; // Check if this render scheduled a cascading synchronous update. This is a + // heurstic to detect infinite update loops. We are intentionally excluding + // hydration lanes in this check, because render triggered by selective + // hydration is conceptually not an update. - try { - setCurrentUpdatePriority(priority); - ReactSharedInternals.T = null; - return flushPassiveEffectsImpl(); - } finally { - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; // Once passive effects have run for the tree - giving components a - // chance to retain cache instances they use - release the pooled - // cache at the root (if there is one) + if ( // Check if there was a recursive update spawned by this render, in either + // the render phase or the commit phase. We track these explicitly because + // we can't infer from the remaining lanes alone. + // Was the finished render the result of an update (not hydration)? + includesSomeLane(lanes, UpdateLanes) && // Did it schedule a sync update? + includesSomeLane(remainingLanes, SyncUpdateLanes)) { + { + markNestedUpdateScheduled(); + } // Count the number of times the root synchronously re-renders without + // finishing. If there are too many, it indicates an infinite update loop. - releaseRootPooledCache(root, remainingLanes); - } - } - return false; + if (root === rootWithNestedUpdates) { + nestedUpdateCount++; + } else { + nestedUpdateCount = 0; + rootWithNestedUpdates = root; } - function enqueuePendingPassiveProfilerEffect(fiber) { - { - pendingPassiveProfilerEffects.push(fiber); + } else { + nestedUpdateCount = 0; + } // If layout work was scheduled, flush it now. - if (!rootDoesHavePassiveEffects) { - rootDoesHavePassiveEffects = true; - scheduleCallback(NormalPriority$1, function () { - flushPassiveEffects(); - return null; - }); - } - } - } - function flushPassiveEffectsImpl() { - if (rootWithPendingPassiveEffects === null) { - return false; - } // Cache and clear the transitions flag + flushSyncWorkOnAllRoots(); - var transitions = pendingPassiveTransitions; - pendingPassiveTransitions = null; - var root = rootWithPendingPassiveEffects; - var lanes = pendingPassiveEffectsLanes; - rootWithPendingPassiveEffects = null; // TODO: This is sometimes out of sync with rootWithPendingPassiveEffects. - // Figure out why and fix it. It's not causing any known issues (probably - // because it's only used for profiling), but it's a refactor hazard. + { + markCommitStopped(); + } - pendingPassiveEffectsLanes = NoLanes; + return null; +} - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error( - "Cannot flush passive effects while already rendering." - ); - } +function makeErrorInfo(componentStack) { + var errorInfo = { + componentStack: componentStack + }; - { - isFlushingPassiveEffects = true; - didScheduleUpdateDuringPassiveEffects = false; + { + Object.defineProperty(errorInfo, 'digest', { + get: function () { + error('You are accessing "digest" from the errorInfo object passed to onRecoverableError.' + ' This property is no longer provided as part of errorInfo but can be accessed as a property' + ' of the Error instance itself.'); } + }); + } - { - markPassiveEffectsStarted(lanes); - } + return errorInfo; +} - var prevExecutionContext = executionContext; - executionContext |= CommitContext; - commitPassiveUnmountEffects(root.current); - commitPassiveMountEffects(root, root.current, lanes, transitions); // TODO: Move to commitPassiveMountEffects +function releaseRootPooledCache(root, remainingLanes) { + { + var pooledCacheLanes = root.pooledCacheLanes &= remainingLanes; - { - var profilerEffects = pendingPassiveProfilerEffects; - pendingPassiveProfilerEffects = []; + if (pooledCacheLanes === NoLanes) { + // None of the remaining work relies on the cache pool. Clear it so + // subsequent requests get a new cache + var pooledCache = root.pooledCache; - for (var i = 0; i < profilerEffects.length; i++) { - var fiber = profilerEffects[i]; - commitPassiveEffectDurations(root, fiber); - } + if (pooledCache != null) { + root.pooledCache = null; + releaseCache(pooledCache); } + } + } +} - { - markPassiveEffectsStopped(); - } +function flushPassiveEffects() { + // Returns whether passive effects were flushed. + // TODO: Combine this check with the one in flushPassiveEFfectsImpl. We should + // probably just combine the two functions. I believe they were only separate + // in the first place because we used to wrap it with + // `Scheduler.runWithPriority`, which accepts a function. But now we track the + // priority within React itself, so we can mutate the variable directly. + if (rootWithPendingPassiveEffects !== null) { + // Cache the root since rootWithPendingPassiveEffects is cleared in + // flushPassiveEffectsImpl + var root = rootWithPendingPassiveEffects; // Cache and clear the remaining lanes flag; it must be reset since this + // method can be called from various places, not always from commitRoot + // where the remaining lanes are known + + var remainingLanes = pendingPassiveEffectsRemainingLanes; + pendingPassiveEffectsRemainingLanes = NoLanes; + var renderPriority = lanesToEventPriority(pendingPassiveEffectsLanes); + var priority = lowerEventPriority(DefaultEventPriority, renderPriority); + var prevTransition = ReactSharedInternals.T; + var previousPriority = getCurrentUpdatePriority(); + + try { + setCurrentUpdatePriority(priority); + ReactSharedInternals.T = null; + return flushPassiveEffectsImpl(); + } finally { + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; // Once passive effects have run for the tree - giving components a + // chance to retain cache instances they use - release the pooled + // cache at the root (if there is one) + + releaseRootPooledCache(root, remainingLanes); + } + } + + return false; +} +function enqueuePendingPassiveProfilerEffect(fiber) { + { + pendingPassiveProfilerEffects.push(fiber); - { - commitDoubleInvokeEffectsInDEV(root, true); - } + if (!rootDoesHavePassiveEffects) { + rootDoesHavePassiveEffects = true; + scheduleCallback(NormalPriority$1, function () { + flushPassiveEffects(); + return null; + }); + } + } +} - executionContext = prevExecutionContext; - flushSyncWorkOnAllRoots(); +function flushPassiveEffectsImpl() { + if (rootWithPendingPassiveEffects === null) { + return false; + } // Cache and clear the transitions flag - { - // If additional passive effects were scheduled, increment a counter. If this - // exceeds the limit, we'll fire a warning. - if (didScheduleUpdateDuringPassiveEffects) { - if (root === rootWithPassiveNestedUpdates) { - nestedPassiveUpdateCount++; - } else { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = root; - } - } else { - nestedPassiveUpdateCount = 0; - } - isFlushingPassiveEffects = false; - didScheduleUpdateDuringPassiveEffects = false; - } // TODO: Move to commitPassiveMountEffects + var transitions = pendingPassiveTransitions; + pendingPassiveTransitions = null; + var root = rootWithPendingPassiveEffects; + var lanes = pendingPassiveEffectsLanes; + rootWithPendingPassiveEffects = null; // TODO: This is sometimes out of sync with rootWithPendingPassiveEffects. + // Figure out why and fix it. It's not causing any known issues (probably + // because it's only used for profiling), but it's a refactor hazard. - onPostCommitRoot(root); + pendingPassiveEffectsLanes = NoLanes; - { - var stateNode = root.current.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Cannot flush passive effects while already rendering.'); + } - return true; - } + { + isFlushingPassiveEffects = true; + didScheduleUpdateDuringPassiveEffects = false; + } - function isAlreadyFailedLegacyErrorBoundary(instance) { - return ( - legacyErrorBoundariesThatAlreadyFailed !== null && - legacyErrorBoundariesThatAlreadyFailed.has(instance) - ); - } - function markLegacyErrorBoundaryAsFailed(instance) { - if (legacyErrorBoundariesThatAlreadyFailed === null) { - legacyErrorBoundariesThatAlreadyFailed = new Set([instance]); - } else { - legacyErrorBoundariesThatAlreadyFailed.add(instance); - } + { + markPassiveEffectsStarted(lanes); + } + + var prevExecutionContext = executionContext; + executionContext |= CommitContext; + commitPassiveUnmountEffects(root.current); + commitPassiveMountEffects(root, root.current, lanes, transitions); // TODO: Move to commitPassiveMountEffects + + { + var profilerEffects = pendingPassiveProfilerEffects; + pendingPassiveProfilerEffects = []; + + for (var i = 0; i < profilerEffects.length; i++) { + var fiber = profilerEffects[i]; + commitPassiveEffectDurations(root, fiber); } + } - function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) { - var errorInfo = createCapturedValueAtFiber(error, sourceFiber); - var update = createRootErrorUpdate( - rootFiber.stateNode, - errorInfo, - SyncLane - ); - var root = enqueueUpdate(rootFiber, update, SyncLane); + { + markPassiveEffectsStopped(); + } - if (root !== null) { - markRootUpdated(root, SyncLane); - ensureRootIsScheduled(root); + { + commitDoubleInvokeEffectsInDEV(root, true); + } + + executionContext = prevExecutionContext; + flushSyncWorkOnAllRoots(); + + { + // If additional passive effects were scheduled, increment a counter. If this + // exceeds the limit, we'll fire a warning. + if (didScheduleUpdateDuringPassiveEffects) { + if (root === rootWithPassiveNestedUpdates) { + nestedPassiveUpdateCount++; + } else { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = root; } + } else { + nestedPassiveUpdateCount = 0; } - function captureCommitPhaseError( - sourceFiber, - nearestMountedAncestor, - error$1 - ) { - { - setIsRunningInsertionEffect(false); - } + isFlushingPassiveEffects = false; + didScheduleUpdateDuringPassiveEffects = false; + } // TODO: Move to commitPassiveMountEffects - if (sourceFiber.tag === HostRoot) { - // Error was thrown at the root. There is no parent, so the root - // itself should capture it. - captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error$1); - return; - } - var fiber = nearestMountedAncestor; + onPostCommitRoot(root); - while (fiber !== null) { - if (fiber.tag === HostRoot) { - captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error$1); - return; - } else if (fiber.tag === ClassComponent) { - var ctor = fiber.type; - var instance = fiber.stateNode; + { + var stateNode = root.current.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; + } - if ( - typeof ctor.getDerivedStateFromError === "function" || - (typeof instance.componentDidCatch === "function" && - !isAlreadyFailedLegacyErrorBoundary(instance)) - ) { - var errorInfo = createCapturedValueAtFiber(error$1, sourceFiber); - var update = createClassErrorUpdate(SyncLane); - var root = enqueueUpdate(fiber, update, SyncLane); - - if (root !== null) { - initializeClassErrorUpdate(update, root, fiber, errorInfo); - markRootUpdated(root, SyncLane); - ensureRootIsScheduled(root); - } + return true; +} - return; - } - } +function isAlreadyFailedLegacyErrorBoundary(instance) { + return legacyErrorBoundariesThatAlreadyFailed !== null && legacyErrorBoundariesThatAlreadyFailed.has(instance); +} +function markLegacyErrorBoundaryAsFailed(instance) { + if (legacyErrorBoundariesThatAlreadyFailed === null) { + legacyErrorBoundariesThatAlreadyFailed = new Set([instance]); + } else { + legacyErrorBoundariesThatAlreadyFailed.add(instance); + } +} - fiber = fiber.return; - } +function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) { + var errorInfo = createCapturedValueAtFiber(error, sourceFiber); + var update = createRootErrorUpdate(rootFiber.stateNode, errorInfo, SyncLane); + var root = enqueueUpdate(rootFiber, update, SyncLane); - { - error( - "Internal React error: Attempted to capture a commit phase error " + - "inside a detached tree. This indicates a bug in React. Potential " + - "causes include deleting the same fiber more than once, committing an " + - "already-finished tree, or an inconsistent return pointer.\n\n" + - "Error message:\n\n%s", - error$1 - ); - } - } - function attachPingListener(root, wakeable, lanes) { - // Attach a ping listener - // - // The data might resolve before we have a chance to commit the fallback. Or, - // in the case of a refresh, we'll never commit a fallback. So we need to - // attach a listener now. When it resolves ("pings"), we can decide whether to - // try rendering the tree again. - // - // Only attach a listener if one does not already exist for the lanes - // we're currently rendering (which acts like a "thread ID" here). - // - // We only need to do this in concurrent mode. Legacy Suspense always - // commits fallbacks synchronously, so there are no pings. - var pingCache = root.pingCache; - var threadIDs; - - if (pingCache === null) { - pingCache = root.pingCache = new PossiblyWeakMap(); - threadIDs = new Set(); - pingCache.set(wakeable, threadIDs); - } else { - threadIDs = pingCache.get(wakeable); + if (root !== null) { + markRootUpdated(root, SyncLane); + ensureRootIsScheduled(root); + } +} + +function captureCommitPhaseError(sourceFiber, nearestMountedAncestor, error$1) { + { + setIsRunningInsertionEffect(false); + } + + if (sourceFiber.tag === HostRoot) { + // Error was thrown at the root. There is no parent, so the root + // itself should capture it. + captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error$1); + return; + } + + var fiber = nearestMountedAncestor; + + while (fiber !== null) { + if (fiber.tag === HostRoot) { + captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error$1); + return; + } else if (fiber.tag === ClassComponent) { + var ctor = fiber.type; + var instance = fiber.stateNode; + + if (typeof ctor.getDerivedStateFromError === 'function' || typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance)) { + var errorInfo = createCapturedValueAtFiber(error$1, sourceFiber); + var update = createClassErrorUpdate(SyncLane); + var root = enqueueUpdate(fiber, update, SyncLane); - if (threadIDs === undefined) { - threadIDs = new Set(); - pingCache.set(wakeable, threadIDs); + if (root !== null) { + initializeClassErrorUpdate(update, root, fiber, errorInfo); + markRootUpdated(root, SyncLane); + ensureRootIsScheduled(root); } + + return; } + } - if (!threadIDs.has(lanes)) { - workInProgressRootDidAttachPingListener = true; // Memoize using the thread ID to prevent redundant listeners. + fiber = fiber.return; + } - threadIDs.add(lanes); - var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes); + { + error('Internal React error: Attempted to capture a commit phase error ' + 'inside a detached tree. This indicates a bug in React. Potential ' + 'causes include deleting the same fiber more than once, committing an ' + 'already-finished tree, or an inconsistent return pointer.\n\n' + 'Error message:\n\n%s', error$1); + } +} +function attachPingListener(root, wakeable, lanes) { + // Attach a ping listener + // + // The data might resolve before we have a chance to commit the fallback. Or, + // in the case of a refresh, we'll never commit a fallback. So we need to + // attach a listener now. When it resolves ("pings"), we can decide whether to + // try rendering the tree again. + // + // Only attach a listener if one does not already exist for the lanes + // we're currently rendering (which acts like a "thread ID" here). + // + // We only need to do this in concurrent mode. Legacy Suspense always + // commits fallbacks synchronously, so there are no pings. + var pingCache = root.pingCache; + var threadIDs; + + if (pingCache === null) { + pingCache = root.pingCache = new PossiblyWeakMap(); + threadIDs = new Set(); + pingCache.set(wakeable, threadIDs); + } else { + threadIDs = pingCache.get(wakeable); + + if (threadIDs === undefined) { + threadIDs = new Set(); + pingCache.set(wakeable, threadIDs); + } + } + + if (!threadIDs.has(lanes)) { + workInProgressRootDidAttachPingListener = true; // Memoize using the thread ID to prevent redundant listeners. + + threadIDs.add(lanes); + var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes); + + wakeable.then(ping, ping); + } +} - wakeable.then(ping, ping); +function pingSuspendedRoot(root, wakeable, pingedLanes) { + var pingCache = root.pingCache; + + if (pingCache !== null) { + // The wakeable resolved, so we no longer need to memoize, because it will + // never be thrown again. + pingCache.delete(wakeable); + } + + markRootPinged(root, pingedLanes); + warnIfSuspenseResolutionNotWrappedWithActDEV(root); + + if (workInProgressRoot === root && isSubsetOfLanes(workInProgressRootRenderLanes, pingedLanes)) { + // Received a ping at the same priority level at which we're currently + // rendering. We might want to restart this render. This should mirror + // the logic of whether or not a root suspends once it completes. + // TODO: If we're rendering sync either due to Sync, Batched or expired, + // we should probably never restart. + // If we're suspended with delay, or if it's a retry, we'll always suspend + // so we can always restart. + if (workInProgressRootExitStatus === RootSuspendedWithDelay || workInProgressRootExitStatus === RootSuspended && includesOnlyRetries(workInProgressRootRenderLanes) && now$1() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) { + // Force a restart from the root by unwinding the stack. Unless this is + // being called from the render phase, because that would cause a crash. + if ((executionContext & RenderContext) === NoContext) { + prepareFreshStack(root, NoLanes); } + } else { + // Even though we can't restart right now, we might get an + // opportunity later. So we mark this render as having a ping. + workInProgressRootPingedLanes = mergeLanes(workInProgressRootPingedLanes, pingedLanes); } + } - function pingSuspendedRoot(root, wakeable, pingedLanes) { - var pingCache = root.pingCache; + ensureRootIsScheduled(root); +} - if (pingCache !== null) { - // The wakeable resolved, so we no longer need to memoize, because it will - // never be thrown again. - pingCache.delete(wakeable); - } +function retryTimedOutBoundary(boundaryFiber, retryLane) { + // The boundary fiber (a Suspense component or SuspenseList component) + // previously was rendered in its fallback state. One of the promises that + // suspended it has resolved, which means at least part of the tree was + // likely unblocked. Try rendering again, at a new lanes. + if (retryLane === NoLane) { + // TODO: Assign this to `suspenseState.retryLane`? to avoid + // unnecessary entanglement? + retryLane = requestRetryLane(boundaryFiber); + } // TODO: Special case idle priority? - markRootPinged(root, pingedLanes); - warnIfSuspenseResolutionNotWrappedWithActDEV(root); - if ( - workInProgressRoot === root && - isSubsetOfLanes(workInProgressRootRenderLanes, pingedLanes) - ) { - // Received a ping at the same priority level at which we're currently - // rendering. We might want to restart this render. This should mirror - // the logic of whether or not a root suspends once it completes. - // TODO: If we're rendering sync either due to Sync, Batched or expired, - // we should probably never restart. - // If we're suspended with delay, or if it's a retry, we'll always suspend - // so we can always restart. - if ( - workInProgressRootExitStatus === RootSuspendedWithDelay || - (workInProgressRootExitStatus === RootSuspended && - includesOnlyRetries(workInProgressRootRenderLanes) && - now$1() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) - ) { - // Force a restart from the root by unwinding the stack. Unless this is - // being called from the render phase, because that would cause a crash. - if ((executionContext & RenderContext) === NoContext) { - prepareFreshStack(root, NoLanes); - } - } else { - // Even though we can't restart right now, we might get an - // opportunity later. So we mark this render as having a ping. - workInProgressRootPingedLanes = mergeLanes( - workInProgressRootPingedLanes, - pingedLanes - ); - } - } + var root = enqueueConcurrentRenderForLane(boundaryFiber, retryLane); - ensureRootIsScheduled(root); - } + if (root !== null) { + markRootUpdated(root, retryLane); + ensureRootIsScheduled(root); + } +} - function retryTimedOutBoundary(boundaryFiber, retryLane) { - // The boundary fiber (a Suspense component or SuspenseList component) - // previously was rendered in its fallback state. One of the promises that - // suspended it has resolved, which means at least part of the tree was - // likely unblocked. Try rendering again, at a new lanes. - if (retryLane === NoLane) { - // TODO: Assign this to `suspenseState.retryLane`? to avoid - // unnecessary entanglement? - retryLane = requestRetryLane(boundaryFiber); - } // TODO: Special case idle priority? +function retryDehydratedSuspenseBoundary(boundaryFiber) { + var suspenseState = boundaryFiber.memoizedState; + var retryLane = NoLane; - var root = enqueueConcurrentRenderForLane(boundaryFiber, retryLane); + if (suspenseState !== null) { + retryLane = suspenseState.retryLane; + } - if (root !== null) { - markRootUpdated(root, retryLane); - ensureRootIsScheduled(root); - } - } + retryTimedOutBoundary(boundaryFiber, retryLane); +} +function resolveRetryWakeable(boundaryFiber, wakeable) { + var retryLane = NoLane; // Default + + var retryCache; - function retryDehydratedSuspenseBoundary(boundaryFiber) { + switch (boundaryFiber.tag) { + case SuspenseComponent: + retryCache = boundaryFiber.stateNode; var suspenseState = boundaryFiber.memoizedState; - var retryLane = NoLane; if (suspenseState !== null) { retryLane = suspenseState.retryLane; } - retryTimedOutBoundary(boundaryFiber, retryLane); - } - function resolveRetryWakeable(boundaryFiber, wakeable) { - var retryLane = NoLane; // Default + break; - var retryCache; + case SuspenseListComponent: + retryCache = boundaryFiber.stateNode; + break; - switch (boundaryFiber.tag) { - case SuspenseComponent: - retryCache = boundaryFiber.stateNode; - var suspenseState = boundaryFiber.memoizedState; + case OffscreenComponent: + { + var instance = boundaryFiber.stateNode; + retryCache = instance._retryCache; + break; + } - if (suspenseState !== null) { - retryLane = suspenseState.retryLane; - } + default: + throw new Error('Pinged unknown suspense boundary type. ' + 'This is probably a bug in React.'); + } - break; + if (retryCache !== null) { + // The wakeable resolved, so we no longer need to memoize, because it will + // never be thrown again. + retryCache.delete(wakeable); + } - case SuspenseListComponent: - retryCache = boundaryFiber.stateNode; - break; + retryTimedOutBoundary(boundaryFiber, retryLane); +} +function throwIfInfiniteUpdateLoopDetected() { + if (nestedUpdateCount > NESTED_UPDATE_LIMIT) { + nestedUpdateCount = 0; + nestedPassiveUpdateCount = 0; + rootWithNestedUpdates = null; + rootWithPassiveNestedUpdates = null; - case OffscreenComponent: { - var instance = boundaryFiber.stateNode; - retryCache = instance._retryCache; - break; - } + throw new Error('Maximum update depth exceeded. This can happen when a component ' + 'repeatedly calls setState inside componentWillUpdate or ' + 'componentDidUpdate. React limits the number of nested updates to ' + 'prevent infinite loops.'); + } - default: - throw new Error( - "Pinged unknown suspense boundary type. " + - "This is probably a bug in React." - ); - } + { + if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = null; - if (retryCache !== null) { - // The wakeable resolved, so we no longer need to memoize, because it will - // never be thrown again. - retryCache.delete(wakeable); - } + error('Maximum update depth exceeded. This can happen when a component ' + "calls setState inside useEffect, but useEffect either doesn't " + 'have a dependency array, or one of the dependencies changes on ' + 'every render.'); + } + } +} + +function flushRenderPhaseStrictModeWarningsInDEV() { + { + ReactStrictModeWarnings.flushLegacyContextWarning(); + ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings(); + } +} - retryTimedOutBoundary(boundaryFiber, retryLane); +function commitDoubleInvokeEffectsInDEV(root, hasPassiveEffects) { + { + { + legacyCommitDoubleInvokeEffectsInDEV(root.current, hasPassiveEffects); } - function throwIfInfiniteUpdateLoopDetected() { - if (nestedUpdateCount > NESTED_UPDATE_LIMIT) { - nestedUpdateCount = 0; - nestedPassiveUpdateCount = 0; - rootWithNestedUpdates = null; - rootWithPassiveNestedUpdates = null; + } +} + +function legacyCommitDoubleInvokeEffectsInDEV(fiber, hasPassiveEffects) { + // TODO (StrictEffects) Should we set a marker on the root if it contains strict effects + // so we don't traverse unnecessarily? similar to subtreeFlags but just at the root level. + // Maybe not a big deal since this is DEV only behavior. + setCurrentFiber(fiber); + invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectUnmountInDEV); + + if (hasPassiveEffects) { + invokeEffectsInDev(fiber, MountPassiveDev, invokePassiveEffectUnmountInDEV); + } + + invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectMountInDEV); + + if (hasPassiveEffects) { + invokeEffectsInDev(fiber, MountPassiveDev, invokePassiveEffectMountInDEV); + } + + resetCurrentFiber(); +} - throw new Error( - "Maximum update depth exceeded. This can happen when a component " + - "repeatedly calls setState inside componentWillUpdate or " + - "componentDidUpdate. React limits the number of nested updates to " + - "prevent infinite loops." - ); +function invokeEffectsInDev(firstChild, fiberFlags, invokeEffectFn) { + var current = firstChild; + var subtreeRoot = null; + + while (current != null) { + var primarySubtreeFlag = current.subtreeFlags & fiberFlags; + + if (current !== subtreeRoot && current.child != null && primarySubtreeFlag !== NoFlags$1) { + current = current.child; + } else { + if ((current.flags & fiberFlags) !== NoFlags$1) { + invokeEffectFn(current); } - { - if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = null; - - error( - "Maximum update depth exceeded. This can happen when a component " + - "calls setState inside useEffect, but useEffect either doesn't " + - "have a dependency array, or one of the dependencies changes on " + - "every render." - ); - } + if (current.sibling !== null) { + current = current.sibling; + } else { + current = subtreeRoot = current.return; } } + } +} - function flushRenderPhaseStrictModeWarningsInDEV() { - { - ReactStrictModeWarnings.flushLegacyContextWarning(); - ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings(); - } +var didWarnStateUpdateForNotYetMountedComponent = null; +function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) { + { + if ((executionContext & RenderContext) !== NoContext) { + // We let the other warning about render phase updates deal with this one. + return; } - function commitDoubleInvokeEffectsInDEV(root, hasPassiveEffects) { - { - { - legacyCommitDoubleInvokeEffectsInDEV(root.current, hasPassiveEffects); - } - } + if (!(fiber.mode & ConcurrentMode)) { + return; } - function legacyCommitDoubleInvokeEffectsInDEV(fiber, hasPassiveEffects) { - // TODO (StrictEffects) Should we set a marker on the root if it contains strict effects - // so we don't traverse unnecessarily? similar to subtreeFlags but just at the root level. - // Maybe not a big deal since this is DEV only behavior. - setCurrentFiber(fiber); - invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectUnmountInDEV); + var tag = fiber.tag; - if (hasPassiveEffects) { - invokeEffectsInDev( - fiber, - MountPassiveDev, - invokePassiveEffectUnmountInDEV - ); - } + if (tag !== HostRoot && tag !== ClassComponent && tag !== FunctionComponent && tag !== ForwardRef && tag !== MemoComponent && tag !== SimpleMemoComponent) { + // Only warn for user-defined components, not internal ones like Suspense. + return; + } // We show the whole stack but dedupe on the top component's name because + // the problematic code almost always lies inside that component. - invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectMountInDEV); - if (hasPassiveEffects) { - invokeEffectsInDev( - fiber, - MountPassiveDev, - invokePassiveEffectMountInDEV - ); - } + var componentName = getComponentNameFromFiber(fiber) || 'ReactComponent'; - resetCurrentFiber(); - } + if (didWarnStateUpdateForNotYetMountedComponent !== null) { + if (didWarnStateUpdateForNotYetMountedComponent.has(componentName)) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function invokeEffectsInDev(firstChild, fiberFlags, invokeEffectFn) { - var current = firstChild; - var subtreeRoot = null; - while (current != null) { - var primarySubtreeFlag = current.subtreeFlags & fiberFlags; + didWarnStateUpdateForNotYetMountedComponent.add(componentName); + } else { + didWarnStateUpdateForNotYetMountedComponent = new Set([componentName]); + } - if ( - current !== subtreeRoot && - current.child != null && - primarySubtreeFlag !== NoFlags$1 - ) { - current = current.child; - } else { - if ((current.flags & fiberFlags) !== NoFlags$1) { - invokeEffectFn(current); - } + var previousFiber = current; - if (current.sibling !== null) { - current = current.sibling; - } else { - current = subtreeRoot = current.return; - } - } + try { + setCurrentFiber(fiber); + + error("Can't perform a React state update on a component that hasn't mounted yet. " + 'This indicates that you have a side-effect in your render function that ' + 'asynchronously later calls tries to update the component. Move this work to ' + 'useEffect instead.'); + } finally { + if (previousFiber) { + setCurrentFiber(fiber); + } else { + resetCurrentFiber(); } } + } +} +var didWarnAboutUpdateInRender = false; +var didWarnAboutUpdateInRenderForAnotherComponent; - var didWarnStateUpdateForNotYetMountedComponent = null; - function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) { - { - if ((executionContext & RenderContext) !== NoContext) { - // We let the other warning about render phase updates deal with this one. - return; - } +{ + didWarnAboutUpdateInRenderForAnotherComponent = new Set(); +} - if (!(fiber.mode & ConcurrentMode)) { - return; - } +function warnAboutRenderPhaseUpdatesInDEV(fiber) { + { + if (isRendering) { + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + var renderingComponentName = workInProgress && getComponentNameFromFiber(workInProgress) || 'Unknown'; // Dedupe by the rendering component because it's the one that needs to be fixed. - var tag = fiber.tag; - - if ( - tag !== HostRoot && - tag !== ClassComponent && - tag !== FunctionComponent && - tag !== ForwardRef && - tag !== MemoComponent && - tag !== SimpleMemoComponent - ) { - // Only warn for user-defined components, not internal ones like Suspense. - return; - } // We show the whole stack but dedupe on the top component's name because - // the problematic code almost always lies inside that component. + var dedupeKey = renderingComponentName; - var componentName = - getComponentNameFromFiber(fiber) || "ReactComponent"; + if (!didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey)) { + didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey); + var setStateComponentName = getComponentNameFromFiber(fiber) || 'Unknown'; - if (didWarnStateUpdateForNotYetMountedComponent !== null) { - if (didWarnStateUpdateForNotYetMountedComponent.has(componentName)) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + error('Cannot update a component (`%s`) while rendering a ' + 'different component (`%s`). To locate the bad setState() call inside `%s`, ' + 'follow the stack trace as described in https://react.dev/link/setstate-in-render', setStateComponentName, renderingComponentName, renderingComponentName); + } - didWarnStateUpdateForNotYetMountedComponent.add(componentName); - } else { - didWarnStateUpdateForNotYetMountedComponent = new Set([ - componentName - ]); - } + break; + } - var previousFiber = current; + case ClassComponent: + { + if (!didWarnAboutUpdateInRender) { + error('Cannot update during an existing state transition (such as ' + 'within `render`). Render methods should be a pure ' + 'function of props and state.'); - try { - setCurrentFiber(fiber); + didWarnAboutUpdateInRender = true; + } - error( - "Can't perform a React state update on a component that hasn't mounted yet. " + - "This indicates that you have a side-effect in your render function that " + - "asynchronously later calls tries to update the component. Move this work to " + - "useEffect instead." - ); - } finally { - if (previousFiber) { - setCurrentFiber(fiber); - } else { - resetCurrentFiber(); + break; } - } } } - var didWarnAboutUpdateInRender = false; - var didWarnAboutUpdateInRenderForAnotherComponent; + } +} +var fakeActCallbackNode = {}; // $FlowFixMe[missing-local-annot] - { - didWarnAboutUpdateInRenderForAnotherComponent = new Set(); - } +function scheduleCallback(priorityLevel, callback) { + { + // If we're currently inside an `act` scope, bypass Scheduler and push to + // the `act` queue instead. + var actQueue = ReactSharedInternals.actQueue; - function warnAboutRenderPhaseUpdatesInDEV(fiber) { - { - if (isRendering) { - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - var renderingComponentName = - (workInProgress && getComponentNameFromFiber(workInProgress)) || - "Unknown"; // Dedupe by the rendering component because it's the one that needs to be fixed. - - var dedupeKey = renderingComponentName; - - if ( - !didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey) - ) { - didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey); - var setStateComponentName = - getComponentNameFromFiber(fiber) || "Unknown"; - - error( - "Cannot update a component (`%s`) while rendering a " + - "different component (`%s`). To locate the bad setState() call inside `%s`, " + - "follow the stack trace as described in https://react.dev/link/setstate-in-render", - setStateComponentName, - renderingComponentName, - renderingComponentName - ); - } + if (actQueue !== null) { + actQueue.push(callback); + return fakeActCallbackNode; + } else { + return scheduleCallback$3(priorityLevel, callback); + } + } +} - break; - } +function shouldForceFlushFallbacksInDEV() { + // Never force flush in production. This function should get stripped out. + return ReactSharedInternals.actQueue !== null; +} - case ClassComponent: { - if (!didWarnAboutUpdateInRender) { - error( - "Cannot update during an existing state transition (such as " + - "within `render`). Render methods should be a pure " + - "function of props and state." - ); +function warnIfUpdatesNotWrappedWithActDEV(fiber) { + { + if (fiber.mode & ConcurrentMode) { + if (!isConcurrentActEnvironment()) { + // Not in an act environment. No need to warn. + return; + } + } else { + // Legacy mode has additional cases where we suppress a warning. + if (!isLegacyActEnvironment()) { + // Not in an act environment. No need to warn. + return; + } - didWarnAboutUpdateInRender = true; - } + if (executionContext !== NoContext) { + // Legacy mode doesn't warn if the update is batched, i.e. + // batchedUpdates or flushSync. + return; + } - break; - } - } - } + if (fiber.tag !== FunctionComponent && fiber.tag !== ForwardRef && fiber.tag !== SimpleMemoComponent) { + // For backwards compatibility with pre-hooks code, legacy mode only + // warns for updates that originate from a hook. + return; } } - var fakeActCallbackNode = {}; // $FlowFixMe[missing-local-annot] - function scheduleCallback(priorityLevel, callback) { - { - // If we're currently inside an `act` scope, bypass Scheduler and push to - // the `act` queue instead. - var actQueue = ReactSharedInternals.actQueue; + if (ReactSharedInternals.actQueue === null) { + var previousFiber = current; + + try { + setCurrentFiber(fiber); - if (actQueue !== null) { - actQueue.push(callback); - return fakeActCallbackNode; + error('An update to %s inside a test was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be ' + 'wrapped into act(...):\n\n' + 'act(() => {\n' + ' /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://react.dev/link/wrap-tests-with-act', getComponentNameFromFiber(fiber)); + } finally { + if (previousFiber) { + setCurrentFiber(fiber); } else { - return scheduleCallback$3(priorityLevel, callback); + resetCurrentFiber(); } } } + } +} - function shouldForceFlushFallbacksInDEV() { - // Never force flush in production. This function should get stripped out. - return ReactSharedInternals.actQueue !== null; +function warnIfSuspenseResolutionNotWrappedWithActDEV(root) { + { + if ((root.tag !== LegacyRoot) && isConcurrentActEnvironment() && ReactSharedInternals.actQueue === null) { + error('A suspended resource finished loading inside a test, but the event ' + 'was not wrapped in act(...).\n\n' + 'When testing, code that resolves suspended data should be wrapped ' + 'into act(...):\n\n' + 'act(() => {\n' + ' /* finish loading suspended data */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://react.dev/link/wrap-tests-with-act'); } + } +} - function warnIfUpdatesNotWrappedWithActDEV(fiber) { - { - if (fiber.mode & ConcurrentMode) { - if (!isConcurrentActEnvironment()) { - // Not in an act environment. No need to warn. - return; - } - } else { - // Legacy mode has additional cases where we suppress a warning. - if (!isLegacyActEnvironment()) { - // Not in an act environment. No need to warn. - return; - } - - if (executionContext !== NoContext) { - // Legacy mode doesn't warn if the update is batched, i.e. - // batchedUpdates or flushSync. - return; - } - - if ( - fiber.tag !== FunctionComponent && - fiber.tag !== ForwardRef && - fiber.tag !== SimpleMemoComponent - ) { - // For backwards compatibility with pre-hooks code, legacy mode only - // warns for updates that originate from a hook. - return; - } - } - - if (ReactSharedInternals.actQueue === null) { - var previousFiber = current; +function setIsRunningInsertionEffect(isRunning) { + { + isRunningInsertionEffect = isRunning; + } +} - try { - setCurrentFiber(fiber); - - error( - "An update to %s inside a test was not wrapped in act(...).\n\n" + - "When testing, code that causes React state updates should be " + - "wrapped into act(...):\n\n" + - "act(() => {\n" + - " /* fire events that update state */\n" + - "});\n" + - "/* assert on the output */\n\n" + - "This ensures that you're testing the behavior the user would see " + - "in the browser." + - " Learn more at https://react.dev/link/wrap-tests-with-act", - getComponentNameFromFiber(fiber) - ); - } finally { - if (previousFiber) { - setCurrentFiber(fiber); - } else { - resetCurrentFiber(); - } - } - } - } - } +/* eslint-disable react-internal/prod-error-codes */ +// Used by React Refresh runtime through DevTools Global Hook. - function warnIfSuspenseResolutionNotWrappedWithActDEV(root) { - { - if ( - root.tag !== LegacyRoot && - isConcurrentActEnvironment() && - ReactSharedInternals.actQueue === null - ) { - error( - "A suspended resource finished loading inside a test, but the event " + - "was not wrapped in act(...).\n\n" + - "When testing, code that resolves suspended data should be wrapped " + - "into act(...):\n\n" + - "act(() => {\n" + - " /* finish loading suspended data */\n" + - "});\n" + - "/* assert on the output */\n\n" + - "This ensures that you're testing the behavior the user would see " + - "in the browser." + - " Learn more at https://react.dev/link/wrap-tests-with-act" - ); - } - } +var resolveFamily = null; +var failedBoundaries = null; +var setRefreshHandler = function (handler) { + { + resolveFamily = handler; + } +}; +function resolveFunctionForHotReloading(type) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return type; } - function setIsRunningInsertionEffect(isRunning) { - { - isRunningInsertionEffect = isRunning; - } - } + var family = resolveFamily(type); - /* eslint-disable react-internal/prod-error-codes */ - // Used by React Refresh runtime through DevTools Global Hook. + if (family === undefined) { + return type; + } // Use the latest known implementation. - var resolveFamily = null; - var failedBoundaries = null; - var setRefreshHandler = function (handler) { - { - resolveFamily = handler; - } - }; - function resolveFunctionForHotReloading(type) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return type; - } - var family = resolveFamily(type); + return family.current; + } +} +function resolveClassForHotReloading(type) { + // No implementation differences. + return resolveFunctionForHotReloading(type); +} +function resolveForwardRefForHotReloading(type) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return type; + } + + var family = resolveFamily(type); + + if (family === undefined) { + // Check if we're dealing with a real forwardRef. Don't want to crash early. + if (type !== null && type !== undefined && typeof type.render === 'function') { + // ForwardRef is special because its resolved .type is an object, + // but it's possible that we only have its inner render function in the map. + // If that inner render function is different, we'll build a new forwardRef type. + var currentRender = resolveFunctionForHotReloading(type.render); + + if (type.render !== currentRender) { + var syntheticType = { + $$typeof: REACT_FORWARD_REF_TYPE, + render: currentRender + }; - if (family === undefined) { - return type; - } // Use the latest known implementation. + if (type.displayName !== undefined) { + syntheticType.displayName = type.displayName; + } - return family.current; - } - } - function resolveClassForHotReloading(type) { - // No implementation differences. - return resolveFunctionForHotReloading(type); - } - function resolveForwardRefForHotReloading(type) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return type; + return syntheticType; } + } - var family = resolveFamily(type); - - if (family === undefined) { - // Check if we're dealing with a real forwardRef. Don't want to crash early. - if ( - type !== null && - type !== undefined && - typeof type.render === "function" - ) { - // ForwardRef is special because its resolved .type is an object, - // but it's possible that we only have its inner render function in the map. - // If that inner render function is different, we'll build a new forwardRef type. - var currentRender = resolveFunctionForHotReloading(type.render); - - if (type.render !== currentRender) { - var syntheticType = { - $$typeof: REACT_FORWARD_REF_TYPE, - render: currentRender - }; - - if (type.displayName !== undefined) { - syntheticType.displayName = type.displayName; - } - - return syntheticType; - } - } + return type; + } // Use the latest known implementation. - return type; - } // Use the latest known implementation. - return family.current; - } + return family.current; + } +} +function isCompatibleFamilyForHotReloading(fiber, element) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return false; } - function isCompatibleFamilyForHotReloading(fiber, element) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return false; - } - var prevType = fiber.elementType; - var nextType = element.type; // If we got here, we know types aren't === equal. + var prevType = fiber.elementType; + var nextType = element.type; // If we got here, we know types aren't === equal. - var needsCompareFamilies = false; - var $$typeofNextType = - typeof nextType === "object" && nextType !== null - ? nextType.$$typeof - : null; + var needsCompareFamilies = false; + var $$typeofNextType = typeof nextType === 'object' && nextType !== null ? nextType.$$typeof : null; - switch (fiber.tag) { - case ClassComponent: { - if (typeof nextType === "function") { - needsCompareFamilies = true; - } - - break; + switch (fiber.tag) { + case ClassComponent: + { + if (typeof nextType === 'function') { + needsCompareFamilies = true; } - case FunctionComponent: { - if (typeof nextType === "function") { - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - // We don't know the inner type yet. - // We're going to assume that the lazy inner type is stable, - // and so it is sufficient to avoid reconciling it away. - // We're not going to unwrap or actually use the new lazy type. - needsCompareFamilies = true; - } + break; + } - break; + case FunctionComponent: + { + if (typeof nextType === 'function') { + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + // We don't know the inner type yet. + // We're going to assume that the lazy inner type is stable, + // and so it is sufficient to avoid reconciling it away. + // We're not going to unwrap or actually use the new lazy type. + needsCompareFamilies = true; } - case ForwardRef: { - if ($$typeofNextType === REACT_FORWARD_REF_TYPE) { - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - needsCompareFamilies = true; - } + break; + } - break; + case ForwardRef: + { + if ($$typeofNextType === REACT_FORWARD_REF_TYPE) { + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + needsCompareFamilies = true; } - case MemoComponent: - case SimpleMemoComponent: { - if ($$typeofNextType === REACT_MEMO_TYPE) { - // TODO: if it was but can no longer be simple, - // we shouldn't set this. - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - needsCompareFamilies = true; - } + break; + } - break; + case MemoComponent: + case SimpleMemoComponent: + { + if ($$typeofNextType === REACT_MEMO_TYPE) { + // TODO: if it was but can no longer be simple, + // we shouldn't set this. + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + needsCompareFamilies = true; } - default: - return false; - } // Check if both types have a family and it's the same one. - - if (needsCompareFamilies) { - // Note: memo() and forwardRef() we'll compare outer rather than inner type. - // This means both of them need to be registered to preserve state. - // If we unwrapped and compared the inner types for wrappers instead, - // then we would risk falsely saying two separate memo(Foo) - // calls are equivalent because they wrap the same Foo function. - var prevFamily = resolveFamily(prevType); // $FlowFixMe[not-a-function] found when upgrading Flow - - if ( - prevFamily !== undefined && - prevFamily === resolveFamily(nextType) - ) { - return true; - } + break; } + default: return false; - } - } - function markFailedErrorBoundaryForHotReloading(fiber) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return; - } + } // Check if both types have a family and it's the same one. - if (typeof WeakSet !== "function") { - return; - } - if (failedBoundaries === null) { - failedBoundaries = new WeakSet(); - } + if (needsCompareFamilies) { + // Note: memo() and forwardRef() we'll compare outer rather than inner type. + // This means both of them need to be registered to preserve state. + // If we unwrapped and compared the inner types for wrappers instead, + // then we would risk falsely saying two separate memo(Foo) + // calls are equivalent because they wrap the same Foo function. + var prevFamily = resolveFamily(prevType); // $FlowFixMe[not-a-function] found when upgrading Flow - failedBoundaries.add(fiber); + if (prevFamily !== undefined && prevFamily === resolveFamily(nextType)) { + return true; } } - var scheduleRefresh = function (root, update) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return; - } - var staleFamilies = update.staleFamilies, - updatedFamilies = update.updatedFamilies; - flushPassiveEffects(); - scheduleFibersWithFamiliesRecursively( - root.current, - updatedFamilies, - staleFamilies - ); - flushSyncWork(); - } - }; - var scheduleRoot = function (root, element) { - { - if (root.context !== emptyContextObject) { - // Super edge case: root has a legacy _renderSubtree context - // but we don't know the parentComponent so we can't pass it. - // Just ignore. We'll delete this with _renderSubtree code path later. - return; - } + return false; + } +} +function markFailedErrorBoundaryForHotReloading(fiber) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return; + } - updateContainerSync(element, root, null, null); - flushSyncWork(); - } - }; + if (typeof WeakSet !== 'function') { + return; + } - function scheduleFibersWithFamiliesRecursively( - fiber, - updatedFamilies, - staleFamilies - ) { - { - var alternate = fiber.alternate, - child = fiber.child, - sibling = fiber.sibling, - tag = fiber.tag, - type = fiber.type; - var candidateType = null; - - switch (tag) { - case FunctionComponent: - case SimpleMemoComponent: - case ClassComponent: - candidateType = type; - break; + if (failedBoundaries === null) { + failedBoundaries = new WeakSet(); + } - case ForwardRef: - candidateType = type.render; - break; - } + failedBoundaries.add(fiber); + } +} +var scheduleRefresh = function (root, update) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return; + } + + var staleFamilies = update.staleFamilies, + updatedFamilies = update.updatedFamilies; + flushPassiveEffects(); + scheduleFibersWithFamiliesRecursively(root.current, updatedFamilies, staleFamilies); + flushSyncWork(); + } +}; +var scheduleRoot = function (root, element) { + { + if (root.context !== emptyContextObject) { + // Super edge case: root has a legacy _renderSubtree context + // but we don't know the parentComponent so we can't pass it. + // Just ignore. We'll delete this with _renderSubtree code path later. + return; + } + + updateContainerSync(element, root, null, null); + flushSyncWork(); + } +}; + +function scheduleFibersWithFamiliesRecursively(fiber, updatedFamilies, staleFamilies) { + { + var alternate = fiber.alternate, + child = fiber.child, + sibling = fiber.sibling, + tag = fiber.tag, + type = fiber.type; + var candidateType = null; - if (resolveFamily === null) { - throw new Error( - "Expected resolveFamily to be set during hot reload." - ); - } + switch (tag) { + case FunctionComponent: + case SimpleMemoComponent: + case ClassComponent: + candidateType = type; + break; - var needsRender = false; - var needsRemount = false; + case ForwardRef: + candidateType = type.render; + break; + } - if (candidateType !== null) { - var family = resolveFamily(candidateType); + if (resolveFamily === null) { + throw new Error('Expected resolveFamily to be set during hot reload.'); + } - if (family !== undefined) { - if (staleFamilies.has(family)) { - needsRemount = true; - } else if (updatedFamilies.has(family)) { - if (tag === ClassComponent) { - needsRemount = true; - } else { - needsRender = true; - } - } - } - } + var needsRender = false; + var needsRemount = false; - if (failedBoundaries !== null) { - if ( - failedBoundaries.has(fiber) || // $FlowFixMe[incompatible-use] found when upgrading Flow - (alternate !== null && failedBoundaries.has(alternate)) - ) { + if (candidateType !== null) { + var family = resolveFamily(candidateType); + + if (family !== undefined) { + if (staleFamilies.has(family)) { + needsRemount = true; + } else if (updatedFamilies.has(family)) { + if (tag === ClassComponent) { needsRemount = true; + } else { + needsRender = true; } } + } + } - if (needsRemount) { - fiber._debugNeedsRemount = true; - } - - if (needsRemount || needsRender) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (failedBoundaries !== null) { + if (failedBoundaries.has(fiber) || // $FlowFixMe[incompatible-use] found when upgrading Flow + alternate !== null && failedBoundaries.has(alternate)) { + needsRemount = true; + } + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } + if (needsRemount) { + fiber._debugNeedsRemount = true; + } - if (child !== null && !needsRemount) { - scheduleFibersWithFamiliesRecursively( - child, - updatedFamilies, - staleFamilies - ); - } + if (needsRemount || needsRender) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (sibling !== null) { - scheduleFibersWithFamiliesRecursively( - sibling, - updatedFamilies, - staleFamilies - ); - } + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); } } - var findHostInstancesForRefresh = function (root, families) { - { - var hostInstances = new Set(); - var types = new Set( - families.map(function (family) { - return family.current; - }) - ); - findHostInstancesForMatchingFibersRecursively( - root.current, - types, - hostInstances - ); - return hostInstances; - } - }; + if (child !== null && !needsRemount) { + scheduleFibersWithFamiliesRecursively(child, updatedFamilies, staleFamilies); + } - function findHostInstancesForMatchingFibersRecursively( - fiber, - types, - hostInstances - ) { - { - var child = fiber.child, - sibling = fiber.sibling, - tag = fiber.tag, - type = fiber.type; - var candidateType = null; - - switch (tag) { - case FunctionComponent: - case SimpleMemoComponent: - case ClassComponent: - candidateType = type; - break; + if (sibling !== null) { + scheduleFibersWithFamiliesRecursively(sibling, updatedFamilies, staleFamilies); + } + } +} - case ForwardRef: - candidateType = type.render; - break; - } +var findHostInstancesForRefresh = function (root, families) { + { + var hostInstances = new Set(); + var types = new Set(families.map(function (family) { + return family.current; + })); + findHostInstancesForMatchingFibersRecursively(root.current, types, hostInstances); + return hostInstances; + } +}; + +function findHostInstancesForMatchingFibersRecursively(fiber, types, hostInstances) { + { + var child = fiber.child, + sibling = fiber.sibling, + tag = fiber.tag, + type = fiber.type; + var candidateType = null; - var didMatch = false; + switch (tag) { + case FunctionComponent: + case SimpleMemoComponent: + case ClassComponent: + candidateType = type; + break; - if (candidateType !== null) { - if (types.has(candidateType)) { - didMatch = true; - } - } + case ForwardRef: + candidateType = type.render; + break; + } - if (didMatch) { - // We have a match. This only drills down to the closest host components. - // There's no need to search deeper because for the purpose of giving - // visual feedback, "flashing" outermost parent rectangles is sufficient. - findHostInstancesForFiberShallowly(fiber, hostInstances); - } else { - // If there's no match, maybe there will be one further down in the child tree. - if (child !== null) { - findHostInstancesForMatchingFibersRecursively( - child, - types, - hostInstances - ); - } - } + var didMatch = false; - if (sibling !== null) { - findHostInstancesForMatchingFibersRecursively( - sibling, - types, - hostInstances - ); - } + if (candidateType !== null) { + if (types.has(candidateType)) { + didMatch = true; } } - function findHostInstancesForFiberShallowly(fiber, hostInstances) { - { - var foundHostInstances = findChildHostInstancesForFiberShallowly( - fiber, - hostInstances - ); + if (didMatch) { + // We have a match. This only drills down to the closest host components. + // There's no need to search deeper because for the purpose of giving + // visual feedback, "flashing" outermost parent rectangles is sufficient. + findHostInstancesForFiberShallowly(fiber, hostInstances); + } else { + // If there's no match, maybe there will be one further down in the child tree. + if (child !== null) { + findHostInstancesForMatchingFibersRecursively(child, types, hostInstances); + } + } - if (foundHostInstances) { - return; - } // If we didn't find any host children, fallback to closest host parent. + if (sibling !== null) { + findHostInstancesForMatchingFibersRecursively(sibling, types, hostInstances); + } + } +} - var node = fiber; +function findHostInstancesForFiberShallowly(fiber, hostInstances) { + { + var foundHostInstances = findChildHostInstancesForFiberShallowly(fiber, hostInstances); - while (true) { - switch (node.tag) { - case HostSingleton: - case HostComponent: - hostInstances.add(node.stateNode); - return; + if (foundHostInstances) { + return; + } // If we didn't find any host children, fallback to closest host parent. - case HostPortal: - hostInstances.add(node.stateNode.containerInfo); - return; - case HostRoot: - hostInstances.add(node.stateNode.containerInfo); - return; - } + var node = fiber; - if (node.return === null) { - throw new Error("Expected to reach root first."); - } + while (true) { + switch (node.tag) { + case HostSingleton: + case HostComponent: + hostInstances.add(node.stateNode); + return; - node = node.return; - } + case HostPortal: + hostInstances.add(node.stateNode.containerInfo); + return; + + case HostRoot: + hostInstances.add(node.stateNode.containerInfo); + return; } - } - function findChildHostInstancesForFiberShallowly(fiber, hostInstances) { - { - var node = fiber; - var foundHostInstances = false; - - while (true) { - if ( - node.tag === HostComponent || - node.tag === HostHoistable || - false - ) { - // We got a match. - foundHostInstances = true; - hostInstances.add(node.stateNode); // There may still be more, so keep searching. - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + if (node.return === null) { + throw new Error('Expected to reach root first.'); + } - if (node === fiber) { - return foundHostInstances; - } + node = node.return; + } + } +} - while (node.sibling === null) { - if (node.return === null || node.return === fiber) { - return foundHostInstances; - } +function findChildHostInstancesForFiberShallowly(fiber, hostInstances) { + { + var node = fiber; + var foundHostInstances = false; - node = node.return; - } + while (true) { + if (node.tag === HostComponent || node.tag === HostHoistable || (false)) { + // We got a match. + foundHostInstances = true; + hostInstances.add(node.stateNode); // There may still be more, so keep searching. + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } - node.sibling.return = node.return; - node = node.sibling; + if (node === fiber) { + return foundHostInstances; + } + + while (node.sibling === null) { + if (node.return === null || node.return === fiber) { + return foundHostInstances; } + + node = node.return; } - return false; + node.sibling.return = node.return; + node = node.sibling; } + } - var hasBadMapPolyfill; - - { - hasBadMapPolyfill = false; + return false; +} - try { - var nonExtensibleObject = Object.preventExtensions({}); - /* eslint-disable no-new */ - - new Map([[nonExtensibleObject, null]]); - new Set([nonExtensibleObject]); - /* eslint-enable no-new */ - } catch (e) { - // TODO: Consider warning about bad polyfills - hasBadMapPolyfill = true; - } - } - - function FiberNode(tag, pendingProps, key, mode) { - // Instance - this.tag = tag; - this.key = key; - this.elementType = null; - this.type = null; - this.stateNode = null; // Fiber - - this.return = null; - this.child = null; - this.sibling = null; - this.index = 0; - this.ref = null; - this.refCleanup = null; - this.pendingProps = pendingProps; - this.memoizedProps = null; - this.updateQueue = null; - this.memoizedState = null; - this.dependencies = null; - this.mode = mode; // Effects - - this.flags = NoFlags$1; - this.subtreeFlags = NoFlags$1; - this.deletions = null; - this.lanes = NoLanes; - this.childLanes = NoLanes; - this.alternate = null; +var hasBadMapPolyfill; - { - // Note: The following is done to avoid a v8 performance cliff. - // - // Initializing the fields below to smis and later updating them with - // double values will cause Fibers to end up having separate shapes. - // This behavior/bug has something to do with Object.preventExtension(). - // Fortunately this only impacts DEV builds. - // Unfortunately it makes React unusably slow for some applications. - // To work around this, initialize the fields below with doubles. - // - // Learn more about this here: - // https://github.com/facebook/react/issues/14365 - // https://bugs.chromium.org/p/v8/issues/detail?id=8538 - this.actualDuration = Number.NaN; - this.actualStartTime = Number.NaN; - this.selfBaseDuration = Number.NaN; - this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization. - // This won't trigger the performance cliff mentioned above, - // and it simplifies other profiler code (including DevTools). - - this.actualDuration = 0; - this.actualStartTime = -1; - this.selfBaseDuration = 0; - this.treeBaseDuration = 0; - } +{ + hasBadMapPolyfill = false; - { - // This isn't directly used but is handy for debugging internals: - this._debugInfo = null; - this._debugOwner = null; - this._debugNeedsRemount = false; - this._debugHookTypes = null; - - if ( - !hasBadMapPolyfill && - typeof Object.preventExtensions === "function" - ) { - Object.preventExtensions(this); - } - } - } // This is a constructor function, rather than a POJO constructor, still - // please ensure we do the following: - // 1) Nobody should add any instance methods on this. Instance methods can be - // more difficult to predict when they get optimized and they are almost - // never inlined properly in static compilers. - // 2) Nobody should rely on `instanceof Fiber` for type testing. We should - // always know when it is a fiber. - // 3) We might want to experiment with using numeric keys since they are easier - // to optimize in a non-JIT environment. - // 4) We can easily go from a constructor to a createFiber object literal if that - // is faster. - // 5) It should be easy to port this to a C struct and keep a C implementation - // compatible. - - function createFiber(tag, pendingProps, key, mode) { - // $FlowFixMe[invalid-constructor]: the shapes are exact here but Flow doesn't like constructors - return new FiberNode(tag, pendingProps, key, mode); - } - - function shouldConstruct(Component) { - var prototype = Component.prototype; - return !!(prototype && prototype.isReactComponent); - } - - function isSimpleFunctionComponent(type) { - return ( - typeof type === "function" && - !shouldConstruct(type) && - type.defaultProps === undefined - ); - } - function isFunctionClassComponent(type) { - return shouldConstruct(type); - } // This is used to create an alternate fiber to do work on. - - function createWorkInProgress(current, pendingProps) { - var workInProgress = current.alternate; - - if (workInProgress === null) { - // We use a double buffering pooling technique because we know that we'll - // only ever need at most two versions of a tree. We pool the "other" unused - // node that we're free to reuse. This is lazily created to avoid allocating - // extra objects for things that are never updated. It also allow us to - // reclaim the extra memory if needed. - workInProgress = createFiber( - current.tag, - pendingProps, - current.key, - current.mode - ); - workInProgress.elementType = current.elementType; - workInProgress.type = current.type; - workInProgress.stateNode = current.stateNode; + try { + var nonExtensibleObject = Object.preventExtensions({}); + /* eslint-disable no-new */ - { - // DEV-only fields - workInProgress._debugOwner = current._debugOwner; - workInProgress._debugHookTypes = current._debugHookTypes; - } + new Map([[nonExtensibleObject, null]]); + new Set([nonExtensibleObject]); + /* eslint-enable no-new */ + } catch (e) { + // TODO: Consider warning about bad polyfills + hasBadMapPolyfill = true; + } +} - workInProgress.alternate = current; - current.alternate = workInProgress; - } else { - workInProgress.pendingProps = pendingProps; // Needed because Blocks store data on type. +function FiberNode(tag, pendingProps, key, mode) { + // Instance + this.tag = tag; + this.key = key; + this.elementType = null; + this.type = null; + this.stateNode = null; // Fiber + + this.return = null; + this.child = null; + this.sibling = null; + this.index = 0; + this.ref = null; + this.refCleanup = null; + this.pendingProps = pendingProps; + this.memoizedProps = null; + this.updateQueue = null; + this.memoizedState = null; + this.dependencies = null; + this.mode = mode; // Effects + + this.flags = NoFlags$1; + this.subtreeFlags = NoFlags$1; + this.deletions = null; + this.lanes = NoLanes; + this.childLanes = NoLanes; + this.alternate = null; + + { + // Note: The following is done to avoid a v8 performance cliff. + // + // Initializing the fields below to smis and later updating them with + // double values will cause Fibers to end up having separate shapes. + // This behavior/bug has something to do with Object.preventExtension(). + // Fortunately this only impacts DEV builds. + // Unfortunately it makes React unusably slow for some applications. + // To work around this, initialize the fields below with doubles. + // + // Learn more about this here: + // https://github.com/facebook/react/issues/14365 + // https://bugs.chromium.org/p/v8/issues/detail?id=8538 + this.actualDuration = Number.NaN; + this.actualStartTime = Number.NaN; + this.selfBaseDuration = Number.NaN; + this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization. + // This won't trigger the performance cliff mentioned above, + // and it simplifies other profiler code (including DevTools). + + this.actualDuration = 0; + this.actualStartTime = -1; + this.selfBaseDuration = 0; + this.treeBaseDuration = 0; + } + + { + // This isn't directly used but is handy for debugging internals: + this._debugInfo = null; + this._debugOwner = null; + this._debugNeedsRemount = false; + this._debugHookTypes = null; + + if (!hasBadMapPolyfill && typeof Object.preventExtensions === 'function') { + Object.preventExtensions(this); + } + } +} // This is a constructor function, rather than a POJO constructor, still +// please ensure we do the following: +// 1) Nobody should add any instance methods on this. Instance methods can be +// more difficult to predict when they get optimized and they are almost +// never inlined properly in static compilers. +// 2) Nobody should rely on `instanceof Fiber` for type testing. We should +// always know when it is a fiber. +// 3) We might want to experiment with using numeric keys since they are easier +// to optimize in a non-JIT environment. +// 4) We can easily go from a constructor to a createFiber object literal if that +// is faster. +// 5) It should be easy to port this to a C struct and keep a C implementation +// compatible. + + +function createFiber(tag, pendingProps, key, mode) { + // $FlowFixMe[invalid-constructor]: the shapes are exact here but Flow doesn't like constructors + return new FiberNode(tag, pendingProps, key, mode); +} - workInProgress.type = current.type; // We already have an alternate. - // Reset the effect tag. +function shouldConstruct(Component) { + var prototype = Component.prototype; + return !!(prototype && prototype.isReactComponent); +} - workInProgress.flags = NoFlags$1; // The effects are no longer valid. +function isSimpleFunctionComponent(type) { + return typeof type === 'function' && !shouldConstruct(type) && type.defaultProps === undefined; +} +function isFunctionClassComponent(type) { + return shouldConstruct(type); +} // This is used to create an alternate fiber to do work on. + +function createWorkInProgress(current, pendingProps) { + var workInProgress = current.alternate; + + if (workInProgress === null) { + // We use a double buffering pooling technique because we know that we'll + // only ever need at most two versions of a tree. We pool the "other" unused + // node that we're free to reuse. This is lazily created to avoid allocating + // extra objects for things that are never updated. It also allow us to + // reclaim the extra memory if needed. + workInProgress = createFiber(current.tag, pendingProps, current.key, current.mode); + workInProgress.elementType = current.elementType; + workInProgress.type = current.type; + workInProgress.stateNode = current.stateNode; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.deletions = null; + { + // DEV-only fields + workInProgress._debugOwner = current._debugOwner; + workInProgress._debugHookTypes = current._debugHookTypes; + } - { - // We intentionally reset, rather than copy, actualDuration & actualStartTime. - // This prevents time from endlessly accumulating in new commits. - // This has the downside of resetting values for different priority renders, - // But works for yielding (the common case) and should support resuming. - workInProgress.actualDuration = 0; - workInProgress.actualStartTime = -1; - } - } // Reset all effects except static ones. - // Static effects are not specific to a render. - - workInProgress.flags = current.flags & StaticMask; - workInProgress.childLanes = current.childLanes; - workInProgress.lanes = current.lanes; - workInProgress.child = current.child; - workInProgress.memoizedProps = current.memoizedProps; - workInProgress.memoizedState = current.memoizedState; - workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so - // it cannot be shared with the current fiber. - - var currentDependencies = current.dependencies; - workInProgress.dependencies = - currentDependencies === null - ? null - : { - lanes: currentDependencies.lanes, - firstContext: currentDependencies.firstContext - }; // These will be overridden during the parent's reconciliation - - workInProgress.sibling = current.sibling; - workInProgress.index = current.index; - workInProgress.ref = current.ref; - workInProgress.refCleanup = current.refCleanup; + workInProgress.alternate = current; + current.alternate = workInProgress; + } else { + workInProgress.pendingProps = pendingProps; // Needed because Blocks store data on type. - { - workInProgress.selfBaseDuration = current.selfBaseDuration; - workInProgress.treeBaseDuration = current.treeBaseDuration; - } + workInProgress.type = current.type; // We already have an alternate. + // Reset the effect tag. - { - workInProgress._debugInfo = current._debugInfo; - workInProgress._debugNeedsRemount = current._debugNeedsRemount; + workInProgress.flags = NoFlags$1; // The effects are no longer valid. - switch (workInProgress.tag) { - case FunctionComponent: - case SimpleMemoComponent: - workInProgress.type = resolveFunctionForHotReloading(current.type); - break; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.deletions = null; - case ClassComponent: - workInProgress.type = resolveClassForHotReloading(current.type); - break; + { + // We intentionally reset, rather than copy, actualDuration & actualStartTime. + // This prevents time from endlessly accumulating in new commits. + // This has the downside of resetting values for different priority renders, + // But works for yielding (the common case) and should support resuming. + workInProgress.actualDuration = 0; + workInProgress.actualStartTime = -1; + } + } // Reset all effects except static ones. + // Static effects are not specific to a render. + + + workInProgress.flags = current.flags & StaticMask; + workInProgress.childLanes = current.childLanes; + workInProgress.lanes = current.lanes; + workInProgress.child = current.child; + workInProgress.memoizedProps = current.memoizedProps; + workInProgress.memoizedState = current.memoizedState; + workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so + // it cannot be shared with the current fiber. + + var currentDependencies = current.dependencies; + workInProgress.dependencies = currentDependencies === null ? null : { + lanes: currentDependencies.lanes, + firstContext: currentDependencies.firstContext + }; // These will be overridden during the parent's reconciliation + + workInProgress.sibling = current.sibling; + workInProgress.index = current.index; + workInProgress.ref = current.ref; + workInProgress.refCleanup = current.refCleanup; + + { + workInProgress.selfBaseDuration = current.selfBaseDuration; + workInProgress.treeBaseDuration = current.treeBaseDuration; + } + + { + workInProgress._debugInfo = current._debugInfo; + workInProgress._debugNeedsRemount = current._debugNeedsRemount; + + switch (workInProgress.tag) { + case FunctionComponent: + case SimpleMemoComponent: + workInProgress.type = resolveFunctionForHotReloading(current.type); + break; + + case ClassComponent: + workInProgress.type = resolveClassForHotReloading(current.type); + break; + + case ForwardRef: + workInProgress.type = resolveForwardRefForHotReloading(current.type); + break; + } + } + + return workInProgress; +} // Used to reuse a Fiber for a second pass. + +function resetWorkInProgress(workInProgress, renderLanes) { + // This resets the Fiber to what createFiber or createWorkInProgress would + // have set the values to before during the first pass. Ideally this wouldn't + // be necessary but unfortunately many code paths reads from the workInProgress + // when they should be reading from current and writing to workInProgress. + // We assume pendingProps, index, key, ref, return are still untouched to + // avoid doing another reconciliation. + // Reset the effect flags but keep any Placement tags, since that's something + // that child fiber is setting, not the reconciliation. + workInProgress.flags &= StaticMask | Placement; // The effects are no longer valid. + + var current = workInProgress.alternate; + + if (current === null) { + // Reset to createFiber's initial values. + workInProgress.childLanes = NoLanes; + workInProgress.lanes = renderLanes; + workInProgress.child = null; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.memoizedProps = null; + workInProgress.memoizedState = null; + workInProgress.updateQueue = null; + workInProgress.dependencies = null; + workInProgress.stateNode = null; - case ForwardRef: - workInProgress.type = resolveForwardRefForHotReloading( - current.type - ); - break; - } - } + { + // Note: We don't reset the actualTime counts. It's useful to accumulate + // actual time across multiple render passes. + workInProgress.selfBaseDuration = 0; + workInProgress.treeBaseDuration = 0; + } + } else { + // Reset to the cloned values that createWorkInProgress would've. + workInProgress.childLanes = current.childLanes; + workInProgress.lanes = current.lanes; + workInProgress.child = current.child; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.deletions = null; + workInProgress.memoizedProps = current.memoizedProps; + workInProgress.memoizedState = current.memoizedState; + workInProgress.updateQueue = current.updateQueue; // Needed because Blocks store data on type. + + workInProgress.type = current.type; // Clone the dependencies object. This is mutated during the render phase, so + // it cannot be shared with the current fiber. + + var currentDependencies = current.dependencies; + workInProgress.dependencies = currentDependencies === null ? null : { + lanes: currentDependencies.lanes, + firstContext: currentDependencies.firstContext + }; - return workInProgress; - } // Used to reuse a Fiber for a second pass. + { + // Note: We don't reset the actualTime counts. It's useful to accumulate + // actual time across multiple render passes. + workInProgress.selfBaseDuration = current.selfBaseDuration; + workInProgress.treeBaseDuration = current.treeBaseDuration; + } + } - function resetWorkInProgress(workInProgress, renderLanes) { - // This resets the Fiber to what createFiber or createWorkInProgress would - // have set the values to before during the first pass. Ideally this wouldn't - // be necessary but unfortunately many code paths reads from the workInProgress - // when they should be reading from current and writing to workInProgress. - // We assume pendingProps, index, key, ref, return are still untouched to - // avoid doing another reconciliation. - // Reset the effect flags but keep any Placement tags, since that's something - // that child fiber is setting, not the reconciliation. - workInProgress.flags &= StaticMask | Placement; // The effects are no longer valid. + return workInProgress; +} +function createHostRootFiber(tag, isStrictMode, concurrentUpdatesByDefaultOverride) { + var mode; - var current = workInProgress.alternate; + if (tag === ConcurrentRoot) { + mode = ConcurrentMode; - if (current === null) { - // Reset to createFiber's initial values. - workInProgress.childLanes = NoLanes; - workInProgress.lanes = renderLanes; - workInProgress.child = null; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.memoizedProps = null; - workInProgress.memoizedState = null; - workInProgress.updateQueue = null; - workInProgress.dependencies = null; - workInProgress.stateNode = null; + if (isStrictMode === true) { + mode |= StrictLegacyMode | StrictEffectsMode; + } - { - // Note: We don't reset the actualTime counts. It's useful to accumulate - // actual time across multiple render passes. - workInProgress.selfBaseDuration = 0; - workInProgress.treeBaseDuration = 0; - } - } else { - // Reset to the cloned values that createWorkInProgress would've. - workInProgress.childLanes = current.childLanes; - workInProgress.lanes = current.lanes; - workInProgress.child = current.child; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.deletions = null; - workInProgress.memoizedProps = current.memoizedProps; - workInProgress.memoizedState = current.memoizedState; - workInProgress.updateQueue = current.updateQueue; // Needed because Blocks store data on type. - - workInProgress.type = current.type; // Clone the dependencies object. This is mutated during the render phase, so - // it cannot be shared with the current fiber. - - var currentDependencies = current.dependencies; - workInProgress.dependencies = - currentDependencies === null - ? null - : { - lanes: currentDependencies.lanes, - firstContext: currentDependencies.firstContext - }; + if ( // Only for internal experiments. + concurrentUpdatesByDefaultOverride) { + mode |= ConcurrentUpdatesByDefaultMode; + } + } else { + mode = NoMode; + } - { - // Note: We don't reset the actualTime counts. It's useful to accumulate - // actual time across multiple render passes. - workInProgress.selfBaseDuration = current.selfBaseDuration; - workInProgress.treeBaseDuration = current.treeBaseDuration; - } - } + if (isDevToolsPresent) { + // Always collect profile timings when DevTools are present. + // This enables DevTools to start capturing timing at any point– + // Without some nodes in the tree having empty base times. + mode |= ProfileMode; + } - return workInProgress; - } - function createHostRootFiber( - tag, - isStrictMode, - concurrentUpdatesByDefaultOverride - ) { - var mode; + return createFiber(HostRoot, null, null, mode); +} +function createFiberFromTypeAndProps(type, // React$ElementType +key, pendingProps, owner, mode, lanes) { + var fiberTag = FunctionComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy. - if (tag === ConcurrentRoot) { - mode = ConcurrentMode; + var resolvedType = type; - if (isStrictMode === true) { - mode |= StrictLegacyMode | StrictEffectsMode; - } + if (typeof type === 'function') { + if (shouldConstruct(type)) { + fiberTag = ClassComponent; - if ( - // Only for internal experiments. - concurrentUpdatesByDefaultOverride - ) { - mode |= ConcurrentUpdatesByDefaultMode; - } - } else { - mode = NoMode; + { + resolvedType = resolveClassForHotReloading(resolvedType); } - - if (isDevToolsPresent) { - // Always collect profile timings when DevTools are present. - // This enables DevTools to start capturing timing at any point– - // Without some nodes in the tree having empty base times. - mode |= ProfileMode; + } else { + { + resolvedType = resolveFunctionForHotReloading(resolvedType); } - - return createFiber(HostRoot, null, null, mode); } - function createFiberFromTypeAndProps( - type, // React$ElementType - key, - pendingProps, - owner, - mode, - lanes - ) { - var fiberTag = FunctionComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy. - - var resolvedType = type; + } else if (typeof type === 'string') { + { + fiberTag = HostComponent; + } + } else { + getTag: switch (type) { + case REACT_FRAGMENT_TYPE: + return createFiberFromFragment(pendingProps.children, mode, lanes, key); - if (typeof type === "function") { - if (shouldConstruct(type)) { - fiberTag = ClassComponent; + case REACT_STRICT_MODE_TYPE: + fiberTag = Mode; + mode |= StrictLegacyMode; - { - resolvedType = resolveClassForHotReloading(resolvedType); - } - } else { - { - resolvedType = resolveFunctionForHotReloading(resolvedType); - } - } - } else if (typeof type === "string") { - { - fiberTag = HostComponent; + if ((mode & ConcurrentMode) !== NoMode) { + // Strict effects should never run on legacy roots + mode |= StrictEffectsMode; } - } else { - getTag: switch (type) { - case REACT_FRAGMENT_TYPE: - return createFiberFromFragment( - pendingProps.children, - mode, - lanes, - key - ); - - case REACT_STRICT_MODE_TYPE: - fiberTag = Mode; - mode |= StrictLegacyMode; - if ((mode & ConcurrentMode) !== NoMode) { - // Strict effects should never run on legacy roots - mode |= StrictEffectsMode; - } - - break; + break; - case REACT_PROFILER_TYPE: - return createFiberFromProfiler(pendingProps, mode, lanes, key); + case REACT_PROFILER_TYPE: + return createFiberFromProfiler(pendingProps, mode, lanes, key); - case REACT_SUSPENSE_TYPE: - return createFiberFromSuspense(pendingProps, mode, lanes, key); + case REACT_SUSPENSE_TYPE: + return createFiberFromSuspense(pendingProps, mode, lanes, key); - case REACT_SUSPENSE_LIST_TYPE: - return createFiberFromSuspenseList(pendingProps, mode, lanes, key); + case REACT_SUSPENSE_LIST_TYPE: + return createFiberFromSuspenseList(pendingProps, mode, lanes, key); - case REACT_OFFSCREEN_TYPE: - return createFiberFromOffscreen(pendingProps, mode, lanes, key); + case REACT_OFFSCREEN_TYPE: + return createFiberFromOffscreen(pendingProps, mode, lanes, key); - case REACT_LEGACY_HIDDEN_TYPE: + case REACT_LEGACY_HIDDEN_TYPE: - // Fall through + // Fall through - case REACT_SCOPE_TYPE: + case REACT_SCOPE_TYPE: - // Fall through + // Fall through - case REACT_TRACING_MARKER_TYPE: + case REACT_TRACING_MARKER_TYPE: - // Fall through + // Fall through - case REACT_DEBUG_TRACING_MODE_TYPE: + case REACT_DEBUG_TRACING_MODE_TYPE: - // Fall through + // Fall through - default: { - if (typeof type === "object" && type !== null) { - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: { + default: + { + if (typeof type === 'object' && type !== null) { + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + { fiberTag = ContextProvider; break getTag; } - // Fall through + // Fall through - case REACT_CONTEXT_TYPE: { + case REACT_CONTEXT_TYPE: + { fiberTag = ContextConsumer; break getTag; } - case REACT_CONSUMER_TYPE: + case REACT_CONSUMER_TYPE: - // Fall through + // Fall through - case REACT_FORWARD_REF_TYPE: - fiberTag = ForwardRef; + case REACT_FORWARD_REF_TYPE: + fiberTag = ForwardRef; - { - resolvedType = - resolveForwardRefForHotReloading(resolvedType); - } + { + resolvedType = resolveForwardRefForHotReloading(resolvedType); + } - break getTag; + break getTag; - case REACT_MEMO_TYPE: - fiberTag = MemoComponent; - break getTag; + case REACT_MEMO_TYPE: + fiberTag = MemoComponent; + break getTag; - case REACT_LAZY_TYPE: - fiberTag = LazyComponent; - resolvedType = null; - break getTag; - } + case REACT_LAZY_TYPE: + fiberTag = LazyComponent; + resolvedType = null; + break getTag; } + } - var info = ""; + var info = ''; - { - if ( - type === undefined || - (typeof type === "object" && - type !== null && - Object.keys(type).length === 0) - ) { - info += - " You likely forgot to export your component from the file " + - "it's defined in, or you might have mixed up default and " + - "named imports."; - } + { + if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) { + info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.'; + } - var ownerName = owner ? getComponentNameFromOwner(owner) : null; + var ownerName = owner ? getComponentNameFromOwner(owner) : null; - if (ownerName) { - info += "\n\nCheck the render method of `" + ownerName + "`."; - } + if (ownerName) { + info += '\n\nCheck the render method of `' + ownerName + '`.'; } - - throw new Error( - "Element type is invalid: expected a string (for built-in " + - "components) or a class/function (for composite components) " + - ("but got: " + (type == null ? type : typeof type) + "." + info) - ); } + + throw new Error('Element type is invalid: expected a string (for built-in ' + 'components) or a class/function (for composite components) ' + ("but got: " + (type == null ? type : typeof type) + "." + info)); } - } + } + } - var fiber = createFiber(fiberTag, pendingProps, key, mode); - fiber.elementType = type; - fiber.type = resolvedType; - fiber.lanes = lanes; + var fiber = createFiber(fiberTag, pendingProps, key, mode); + fiber.elementType = type; + fiber.type = resolvedType; + fiber.lanes = lanes; - { - fiber._debugOwner = owner; - } + { + fiber._debugOwner = owner; + } - return fiber; - } - function createFiberFromElement(element, mode, lanes) { - var owner = null; + return fiber; +} +function createFiberFromElement(element, mode, lanes) { + var owner = null; - { - owner = element._owner; - } + { + owner = element._owner; + } - var type = element.type; - var key = element.key; - var pendingProps = element.props; - var fiber = createFiberFromTypeAndProps( - type, - key, - pendingProps, - owner, - mode, - lanes - ); + var type = element.type; + var key = element.key; + var pendingProps = element.props; + var fiber = createFiberFromTypeAndProps(type, key, pendingProps, owner, mode, lanes); - { - fiber._debugOwner = element._owner; - } + { + fiber._debugOwner = element._owner; + } - return fiber; - } - function createFiberFromFragment(elements, mode, lanes, key) { - var fiber = createFiber(Fragment, elements, key, mode); - fiber.lanes = lanes; - return fiber; + return fiber; +} +function createFiberFromFragment(elements, mode, lanes, key) { + var fiber = createFiber(Fragment, elements, key, mode); + fiber.lanes = lanes; + return fiber; +} + +function createFiberFromProfiler(pendingProps, mode, lanes, key) { + { + if (typeof pendingProps.id !== 'string') { + error('Profiler must specify an "id" of type `string` as a prop. Received the type `%s` instead.', typeof pendingProps.id); } + } - function createFiberFromProfiler(pendingProps, mode, lanes, key) { - { - if (typeof pendingProps.id !== "string") { - error( - 'Profiler must specify an "id" of type `string` as a prop. Received the type `%s` instead.', - typeof pendingProps.id - ); - } - } + var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); + fiber.elementType = REACT_PROFILER_TYPE; + fiber.lanes = lanes; - var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); - fiber.elementType = REACT_PROFILER_TYPE; - fiber.lanes = lanes; + { + fiber.stateNode = { + effectDuration: 0, + passiveEffectDuration: 0 + }; + } - { - fiber.stateNode = { - effectDuration: 0, - passiveEffectDuration: 0 - }; - } + return fiber; +} - return fiber; - } - - function createFiberFromSuspense(pendingProps, mode, lanes, key) { - var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); - fiber.elementType = REACT_SUSPENSE_TYPE; - fiber.lanes = lanes; - return fiber; - } - function createFiberFromSuspenseList(pendingProps, mode, lanes, key) { - var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode); - fiber.elementType = REACT_SUSPENSE_LIST_TYPE; - fiber.lanes = lanes; - return fiber; - } - function createFiberFromOffscreen(pendingProps, mode, lanes, key) { - var fiber = createFiber(OffscreenComponent, pendingProps, key, mode); - fiber.elementType = REACT_OFFSCREEN_TYPE; - fiber.lanes = lanes; - var primaryChildInstance = { - _visibility: OffscreenVisible, - _pendingVisibility: OffscreenVisible, - _pendingMarkers: null, - _retryCache: null, - _transitions: null, - _current: null, - detach: function () { - return detachOffscreenInstance(primaryChildInstance); - }, - attach: function () { - return attachOffscreenInstance(primaryChildInstance); - } - }; - fiber.stateNode = primaryChildInstance; - return fiber; - } - function createFiberFromText(content, mode, lanes) { - var fiber = createFiber(HostText, content, null, mode); - fiber.lanes = lanes; - return fiber; - } - function createFiberFromPortal(portal, mode, lanes) { - var pendingProps = portal.children !== null ? portal.children : []; - var fiber = createFiber(HostPortal, pendingProps, portal.key, mode); - fiber.lanes = lanes; - fiber.stateNode = { - containerInfo: portal.containerInfo, - pendingChildren: null, - // Used by persistent updates - implementation: portal.implementation - }; - return fiber; - } - - function FiberRootNode( - containerInfo, // $FlowFixMe[missing-local-annot] - tag, - hydrate, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - formState - ) { - this.tag = tag; - this.containerInfo = containerInfo; - this.pendingChildren = null; - this.current = null; - this.pingCache = null; - this.finishedWork = null; - this.timeoutHandle = noTimeout; - this.cancelPendingCommit = null; - this.context = null; - this.pendingContext = null; - this.next = null; - this.callbackNode = null; - this.callbackPriority = NoLane; - this.expirationTimes = createLaneMap(NoTimestamp); - this.pendingLanes = NoLanes; - this.suspendedLanes = NoLanes; - this.pingedLanes = NoLanes; - this.expiredLanes = NoLanes; - this.finishedLanes = NoLanes; - this.errorRecoveryDisabledLanes = NoLanes; - this.shellSuspendCounter = 0; - this.entangledLanes = NoLanes; - this.entanglements = createLaneMap(NoLanes); - this.hiddenUpdates = createLaneMap(null); - this.identifierPrefix = identifierPrefix; - this.onUncaughtError = onUncaughtError; - this.onCaughtError = onCaughtError; - this.onRecoverableError = onRecoverableError; +function createFiberFromSuspense(pendingProps, mode, lanes, key) { + var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); + fiber.elementType = REACT_SUSPENSE_TYPE; + fiber.lanes = lanes; + return fiber; +} +function createFiberFromSuspenseList(pendingProps, mode, lanes, key) { + var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode); + fiber.elementType = REACT_SUSPENSE_LIST_TYPE; + fiber.lanes = lanes; + return fiber; +} +function createFiberFromOffscreen(pendingProps, mode, lanes, key) { + var fiber = createFiber(OffscreenComponent, pendingProps, key, mode); + fiber.elementType = REACT_OFFSCREEN_TYPE; + fiber.lanes = lanes; + var primaryChildInstance = { + _visibility: OffscreenVisible, + _pendingVisibility: OffscreenVisible, + _pendingMarkers: null, + _retryCache: null, + _transitions: null, + _current: null, + detach: function () { + return detachOffscreenInstance(primaryChildInstance); + }, + attach: function () { + return attachOffscreenInstance(primaryChildInstance); + } + }; + fiber.stateNode = primaryChildInstance; + return fiber; +} +function createFiberFromText(content, mode, lanes) { + var fiber = createFiber(HostText, content, null, mode); + fiber.lanes = lanes; + return fiber; +} +function createFiberFromPortal(portal, mode, lanes) { + var pendingProps = portal.children !== null ? portal.children : []; + var fiber = createFiber(HostPortal, pendingProps, portal.key, mode); + fiber.lanes = lanes; + fiber.stateNode = { + containerInfo: portal.containerInfo, + pendingChildren: null, + // Used by persistent updates + implementation: portal.implementation + }; + return fiber; +} - { - this.pooledCache = null; - this.pooledCacheLanes = NoLanes; +function FiberRootNode(containerInfo, // $FlowFixMe[missing-local-annot] +tag, hydrate, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, formState) { + this.tag = tag; + this.containerInfo = containerInfo; + this.pendingChildren = null; + this.current = null; + this.pingCache = null; + this.finishedWork = null; + this.timeoutHandle = noTimeout; + this.cancelPendingCommit = null; + this.context = null; + this.pendingContext = null; + this.next = null; + this.callbackNode = null; + this.callbackPriority = NoLane; + this.expirationTimes = createLaneMap(NoTimestamp); + this.pendingLanes = NoLanes; + this.suspendedLanes = NoLanes; + this.pingedLanes = NoLanes; + this.expiredLanes = NoLanes; + this.finishedLanes = NoLanes; + this.errorRecoveryDisabledLanes = NoLanes; + this.shellSuspendCounter = 0; + this.entangledLanes = NoLanes; + this.entanglements = createLaneMap(NoLanes); + this.hiddenUpdates = createLaneMap(null); + this.identifierPrefix = identifierPrefix; + this.onUncaughtError = onUncaughtError; + this.onCaughtError = onCaughtError; + this.onRecoverableError = onRecoverableError; + + { + this.pooledCache = null; + this.pooledCacheLanes = NoLanes; + } + + this.formState = formState; + this.incompleteTransitions = new Map(); + + { + this.effectDuration = 0; + this.passiveEffectDuration = 0; + } + + { + { + switch (tag) { + case ConcurrentRoot: + this._debugRootType = hydrate ? 'hydrateRoot()' : 'createRoot()'; + break; + + case LegacyRoot: + this._debugRootType = hydrate ? 'hydrate()' : 'render()'; + break; } + } + } +} - this.formState = formState; - this.incompleteTransitions = new Map(); +function createFiberRoot(containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, // TODO: We have several of these arguments that are conceptually part of the +// host config, but because they are passed in at runtime, we have to thread +// them through the root constructor. Perhaps we should put them all into a +// single type, like a DynamicHostConfig that is defined by the renderer. +identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks, formState) { + // $FlowFixMe[invalid-constructor] Flow no longer supports calling new on functions + var root = new FiberRootNode(containerInfo, tag, hydrate, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, formState); + // stateNode is any. + + + var uninitializedFiber = createHostRootFiber(tag, isStrictMode, concurrentUpdatesByDefaultOverride); + root.current = uninitializedFiber; + uninitializedFiber.stateNode = root; + + { + var initialCache = createCache(); + retainCache(initialCache); // The pooledCache is a fresh cache instance that is used temporarily + // for newly mounted boundaries during a render. In general, the + // pooledCache is always cleared from the root at the end of a render: + // it is either released when render commits, or moved to an Offscreen + // component if rendering suspends. Because the lifetime of the pooled + // cache is distinct from the main memoizedState.cache, it must be + // retained separately. + + root.pooledCache = initialCache; + retainCache(initialCache); + var initialState = { + element: initialChildren, + isDehydrated: hydrate, + cache: initialCache + }; + uninitializedFiber.memoizedState = initialState; + } - { - this.effectDuration = 0; - this.passiveEffectDuration = 0; - } + initializeUpdateQueue(uninitializedFiber); + return root; +} - { - { - switch (tag) { - case ConcurrentRoot: - this._debugRootType = hydrate ? "hydrateRoot()" : "createRoot()"; - break; +var ReactVersion = '19.0.0-canary-8eb36427'; - case LegacyRoot: - this._debugRootType = hydrate ? "hydrate()" : "render()"; - break; - } - } - } +/* + * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol + * and Temporal.* types. See https://github.com/facebook/react/pull/22064. + * + * The functions in this module will throw an easier-to-understand, + * easier-to-debug exception with a clear errors message message explaining the + * problem. (Instead of a confusing exception thrown inside the implementation + * of the `value` object). + */ +// $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +function typeName(value) { + { + // toStringTag is needed for namespaced types like Temporal.Instant + var hasToStringTag = typeof Symbol === 'function' && Symbol.toStringTag; + var type = hasToStringTag && value[Symbol.toStringTag] || value.constructor.name || 'Object'; // $FlowFixMe[incompatible-return] + + return type; + } +} // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + + +function willCoercionThrow(value) { + { + try { + testStringCoercion(value); + return false; + } catch (e) { + return true; } + } +} - function createFiberRoot( - containerInfo, - tag, - hydrate, - initialChildren, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, // TODO: We have several of these arguments that are conceptually part of the - // host config, but because they are passed in at runtime, we have to thread - // them through the root constructor. Perhaps we should put them all into a - // single type, like a DynamicHostConfig that is defined by the renderer. - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks, - formState - ) { - // $FlowFixMe[invalid-constructor] Flow no longer supports calling new on functions - var root = new FiberRootNode( - containerInfo, - tag, - hydrate, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - formState - ); - // stateNode is any. - - var uninitializedFiber = createHostRootFiber( - tag, - isStrictMode, - concurrentUpdatesByDefaultOverride - ); - root.current = uninitializedFiber; - uninitializedFiber.stateNode = root; - - { - var initialCache = createCache(); - retainCache(initialCache); // The pooledCache is a fresh cache instance that is used temporarily - // for newly mounted boundaries during a render. In general, the - // pooledCache is always cleared from the root at the end of a render: - // it is either released when render commits, or moved to an Offscreen - // component if rendering suspends. Because the lifetime of the pooled - // cache is distinct from the main memoizedState.cache, it must be - // retained separately. - - root.pooledCache = initialCache; - retainCache(initialCache); - var initialState = { - element: initialChildren, - isDehydrated: hydrate, - cache: initialCache - }; - uninitializedFiber.memoizedState = initialState; - } +function testStringCoercion(value) { + // If you ended up here by following an exception call stack, here's what's + // happened: you supplied an object or symbol value to React (as a prop, key, + // DOM attribute, CSS property, string ref, etc.) and when React tried to + // coerce it to a string using `'' + value`, an exception was thrown. + // + // The most common types that will cause this exception are `Symbol` instances + // and Temporal objects like `Temporal.Instant`. But any object that has a + // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this + // exception. (Library authors do this to prevent users from using built-in + // numeric operators like `+` or comparison operators like `>=` because custom + // methods are needed to perform accurate arithmetic or comparison.) + // + // To fix the problem, coerce this object or symbol value to a string before + // passing it to React. The most reliable way is usually `String(value)`. + // + // To find which value is throwing, check the browser or debugger console. + // Before this exception was thrown, there should be `console.error` output + // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the + // problem and how that type was used: key, atrribute, input value prop, etc. + // In most cases, this console output also shows the component and its + // ancestor components where the exception happened. + // + // eslint-disable-next-line react-internal/safe-string-coercion + return '' + value; +} +function checkPropStringCoercion(value, propName) { + { + if (willCoercionThrow(value)) { + error('The provided `%s` prop is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', propName, typeName(value)); - initializeUpdateQueue(uninitializedFiber); - return root; + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } + } +} - var ReactVersion = "19.0.0-canary-a47ffde4"; - - /* - * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol - * and Temporal.* types. See https://github.com/facebook/react/pull/22064. - * - * The functions in this module will throw an easier-to-understand, - * easier-to-debug exception with a clear errors message message explaining the - * problem. (Instead of a confusing exception thrown inside the implementation - * of the `value` object). - */ - // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. - function typeName(value) { - { - // toStringTag is needed for namespaced types like Temporal.Instant - var hasToStringTag = typeof Symbol === "function" && Symbol.toStringTag; - var type = - (hasToStringTag && value[Symbol.toStringTag]) || - value.constructor.name || - "Object"; // $FlowFixMe[incompatible-return] +// Might add PROFILE later. - return type; - } - } // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +var didWarnAboutNestedUpdates; - function willCoercionThrow(value) { - { - try { - testStringCoercion(value); - return false; - } catch (e) { - return true; - } - } - } +{ + didWarnAboutNestedUpdates = false; +} - function testStringCoercion(value) { - // If you ended up here by following an exception call stack, here's what's - // happened: you supplied an object or symbol value to React (as a prop, key, - // DOM attribute, CSS property, string ref, etc.) and when React tried to - // coerce it to a string using `'' + value`, an exception was thrown. - // - // The most common types that will cause this exception are `Symbol` instances - // and Temporal objects like `Temporal.Instant`. But any object that has a - // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this - // exception. (Library authors do this to prevent users from using built-in - // numeric operators like `+` or comparison operators like `>=` because custom - // methods are needed to perform accurate arithmetic or comparison.) - // - // To fix the problem, coerce this object or symbol value to a string before - // passing it to React. The most reliable way is usually `String(value)`. - // - // To find which value is throwing, check the browser or debugger console. - // Before this exception was thrown, there should be `console.error` output - // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the - // problem and how that type was used: key, atrribute, input value prop, etc. - // In most cases, this console output also shows the component and its - // ancestor components where the exception happened. - // - // eslint-disable-next-line react-internal/safe-string-coercion - return "" + value; - } - function checkPropStringCoercion(value, propName) { - { - if (willCoercionThrow(value)) { - error( - "The provided `%s` prop is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - propName, - typeName(value) - ); - - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } - } +function getContextForSubtree(parentComponent) { + if (!parentComponent) { + return emptyContextObject; + } - // Might add PROFILE later. + var fiber = get(parentComponent); + var parentContext = findCurrentUnmaskedContext(fiber); - var didWarnAboutNestedUpdates; + if (fiber.tag === ClassComponent) { + var Component = fiber.type; - { - didWarnAboutNestedUpdates = false; + if (isContextProvider(Component)) { + return processChildContext(fiber, Component, parentContext); } + } - function getContextForSubtree(parentComponent) { - if (!parentComponent) { - return emptyContextObject; - } + return parentContext; +} - var fiber = get(parentComponent); - var parentContext = findCurrentUnmaskedContext(fiber); +function createContainer(containerInfo, tag, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks) { + var hydrate = false; + var initialChildren = null; + return createFiberRoot(containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks, null); +} +function updateContainer(element, container, parentComponent, callback) { + var current = container.current; + var lane = requestUpdateLane(current); + updateContainerImpl(current, lane, element, container, parentComponent, callback); + return lane; +} +function updateContainerSync(element, container, parentComponent, callback) { + if (container.tag === LegacyRoot) { + flushPassiveEffects(); + } + + var current = container.current; + updateContainerImpl(current, SyncLane, element, container, parentComponent, callback); + return SyncLane; +} - if (fiber.tag === ClassComponent) { - var Component = fiber.type; +function updateContainerImpl(rootFiber, lane, element, container, parentComponent, callback) { + { + onScheduleRoot(container, element); + } - if (isContextProvider(Component)) { - return processChildContext(fiber, Component, parentContext); - } - } + { + markRenderScheduled(lane); + } - return parentContext; - } + var context = getContextForSubtree(parentComponent); - function createContainer( - containerInfo, - tag, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks - ) { - var hydrate = false; - var initialChildren = null; - return createFiberRoot( - containerInfo, - tag, - hydrate, - initialChildren, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks, - null - ); - } - function updateContainer(element, container, parentComponent, callback) { - var current = container.current; - var lane = requestUpdateLane(current); - updateContainerImpl( - current, - lane, - element, - container, - parentComponent, - callback - ); - return lane; - } - function updateContainerSync( - element, - container, - parentComponent, - callback - ) { - if (container.tag === LegacyRoot) { - flushPassiveEffects(); - } + if (container.context === null) { + container.context = context; + } else { + container.pendingContext = context; + } - var current = container.current; - updateContainerImpl( - current, - SyncLane, - element, - container, - parentComponent, - callback - ); - return SyncLane; - } + { + if (isRendering && current !== null && !didWarnAboutNestedUpdates) { + didWarnAboutNestedUpdates = true; - function updateContainerImpl( - rootFiber, - lane, - element, - container, - parentComponent, - callback - ) { - { - onScheduleRoot(container, element); - } + error('Render methods should be a pure function of props and state; ' + 'triggering nested component updates from render is not allowed. ' + 'If necessary, trigger nested updates in componentDidUpdate.\n\n' + 'Check the render method of %s.', getComponentNameFromFiber(current) || 'Unknown'); + } + } - { - markRenderScheduled(lane); - } + var update = createUpdate(lane); // Caution: React DevTools currently depends on this property + // being called "element". - var context = getContextForSubtree(parentComponent); + update.payload = { + element: element + }; + callback = callback === undefined ? null : callback; - if (container.context === null) { - container.context = context; - } else { - container.pendingContext = context; + if (callback !== null) { + { + if (typeof callback !== 'function') { + error('Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback); } + } - { - if (isRendering && current !== null && !didWarnAboutNestedUpdates) { - didWarnAboutNestedUpdates = true; - - error( - "Render methods should be a pure function of props and state; " + - "triggering nested component updates from render is not allowed. " + - "If necessary, trigger nested updates in componentDidUpdate.\n\n" + - "Check the render method of %s.", - getComponentNameFromFiber(current) || "Unknown" - ); - } - } + update.callback = callback; + } - var update = createUpdate(lane); // Caution: React DevTools currently depends on this property - // being called "element". + var root = enqueueUpdate(rootFiber, update, lane); - update.payload = { - element: element - }; - callback = callback === undefined ? null : callback; + if (root !== null) { + scheduleUpdateOnFiber(root, rootFiber, lane); + entangleTransitions(root, rootFiber, lane); + } +} +function getPublicRootInstance(container) { + var containerFiber = container.current; - if (callback !== null) { - { - if (typeof callback !== "function") { - error( - "Expected the last optional `callback` argument to be a " + - "function. Instead received: %s.", - callback - ); - } - } + if (!containerFiber.child) { + return null; + } - update.callback = callback; - } + switch (containerFiber.child.tag) { + case HostSingleton: + case HostComponent: + return getPublicInstance(containerFiber.child.stateNode); - var root = enqueueUpdate(rootFiber, update, lane); + default: + return containerFiber.child.stateNode; + } +} - if (root !== null) { - scheduleUpdateOnFiber(root, rootFiber, lane); - entangleTransitions(root, rootFiber, lane); - } - } - function getPublicRootInstance(container) { - var containerFiber = container.current; +var shouldErrorImpl = function (fiber) { + return null; +}; - if (!containerFiber.child) { - return null; - } +function shouldError(fiber) { + return shouldErrorImpl(fiber); +} - switch (containerFiber.child.tag) { - case HostSingleton: - case HostComponent: - return getPublicInstance(containerFiber.child.stateNode); +var shouldSuspendImpl = function (fiber) { + return false; +}; - default: - return containerFiber.child.stateNode; +function shouldSuspend(fiber) { + return shouldSuspendImpl(fiber); +} +var overrideHookState = null; +var overrideHookStateDeletePath = null; +var overrideHookStateRenamePath = null; +var overrideProps = null; +var overridePropsDeletePath = null; +var overridePropsRenamePath = null; +var scheduleUpdate = null; +var setErrorHandler = null; +var setSuspenseHandler = null; + +{ + var copyWithDeleteImpl = function (obj, path, index) { + var key = path[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); + + if (index + 1 === path.length) { + if (isArray(updated)) { + updated.splice(key, 1); + } else { + delete updated[key]; } - } - - var shouldErrorImpl = function (fiber) { - return null; - }; - function shouldError(fiber) { - return shouldErrorImpl(fiber); - } + return updated; + } // $FlowFixMe[incompatible-use] number or string is fine here - var shouldSuspendImpl = function (fiber) { - return false; - }; - function shouldSuspend(fiber) { - return shouldSuspendImpl(fiber); - } - var overrideHookState = null; - var overrideHookStateDeletePath = null; - var overrideHookStateRenamePath = null; - var overrideProps = null; - var overridePropsDeletePath = null; - var overridePropsRenamePath = null; - var scheduleUpdate = null; - var setErrorHandler = null; - var setSuspenseHandler = null; + updated[key] = copyWithDeleteImpl(obj[key], path, index + 1); + return updated; + }; - { - var copyWithDeleteImpl = function (obj, path, index) { - var key = path[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); + var copyWithDelete = function (obj, path) { + return copyWithDeleteImpl(obj, path, 0); + }; - if (index + 1 === path.length) { - if (isArray(updated)) { - updated.splice(key, 1); - } else { - delete updated[key]; - } + var copyWithRenameImpl = function (obj, oldPath, newPath, index) { + var oldKey = oldPath[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); - return updated; - } // $FlowFixMe[incompatible-use] number or string is fine here + if (index + 1 === oldPath.length) { + var newKey = newPath[index]; // $FlowFixMe[incompatible-use] number or string is fine here - updated[key] = copyWithDeleteImpl(obj[key], path, index + 1); - return updated; - }; + updated[newKey] = updated[oldKey]; - var copyWithDelete = function (obj, path) { - return copyWithDeleteImpl(obj, path, 0); - }; + if (isArray(updated)) { + updated.splice(oldKey, 1); + } else { + delete updated[oldKey]; + } + } else { + // $FlowFixMe[incompatible-use] number or string is fine here + updated[oldKey] = copyWithRenameImpl( // $FlowFixMe[incompatible-use] number or string is fine here + obj[oldKey], oldPath, newPath, index + 1); + } - var copyWithRenameImpl = function (obj, oldPath, newPath, index) { - var oldKey = oldPath[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); + return updated; + }; - if (index + 1 === oldPath.length) { - var newKey = newPath[index]; // $FlowFixMe[incompatible-use] number or string is fine here + var copyWithRename = function (obj, oldPath, newPath) { + if (oldPath.length !== newPath.length) { + warn('copyWithRename() expects paths of the same length'); - updated[newKey] = updated[oldKey]; + return; + } else { + for (var i = 0; i < newPath.length - 1; i++) { + if (oldPath[i] !== newPath[i]) { + warn('copyWithRename() expects paths to be the same except for the deepest key'); - if (isArray(updated)) { - updated.splice(oldKey, 1); - } else { - delete updated[oldKey]; - } - } else { - // $FlowFixMe[incompatible-use] number or string is fine here - updated[oldKey] = copyWithRenameImpl( - // $FlowFixMe[incompatible-use] number or string is fine here - obj[oldKey], - oldPath, - newPath, - index + 1 - ); + return; } + } + } - return updated; - }; - - var copyWithRename = function (obj, oldPath, newPath) { - if (oldPath.length !== newPath.length) { - warn("copyWithRename() expects paths of the same length"); + return copyWithRenameImpl(obj, oldPath, newPath, 0); + }; - return; - } else { - for (var i = 0; i < newPath.length - 1; i++) { - if (oldPath[i] !== newPath[i]) { - warn( - "copyWithRename() expects paths to be the same except for the deepest key" - ); + var copyWithSetImpl = function (obj, path, index, value) { + if (index >= path.length) { + return value; + } - return; - } - } - } + var key = path[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); // $FlowFixMe[incompatible-use] number or string is fine here - return copyWithRenameImpl(obj, oldPath, newPath, 0); - }; + updated[key] = copyWithSetImpl(obj[key], path, index + 1, value); + return updated; + }; - var copyWithSetImpl = function (obj, path, index, value) { - if (index >= path.length) { - return value; - } + var copyWithSet = function (obj, path, value) { + return copyWithSetImpl(obj, path, 0, value); + }; - var key = path[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); // $FlowFixMe[incompatible-use] number or string is fine here + var findHook = function (fiber, id) { + // For now, the "id" of stateful hooks is just the stateful hook index. + // This may change in the future with e.g. nested hooks. + var currentHook = fiber.memoizedState; - updated[key] = copyWithSetImpl(obj[key], path, index + 1, value); - return updated; - }; + while (currentHook !== null && id > 0) { + currentHook = currentHook.next; + id--; + } - var copyWithSet = function (obj, path, value) { - return copyWithSetImpl(obj, path, 0, value); - }; + return currentHook; + }; // Support DevTools editable values for useState and useReducer. - var findHook = function (fiber, id) { - // For now, the "id" of stateful hooks is just the stateful hook index. - // This may change in the future with e.g. nested hooks. - var currentHook = fiber.memoizedState; - while (currentHook !== null && id > 0) { - currentHook = currentHook.next; - id--; - } + overrideHookState = function (fiber, id, path, value) { + var hook = findHook(fiber, id); - return currentHook; - }; // Support DevTools editable values for useState and useReducer. + if (hook !== null) { + var newState = copyWithSet(hook.memoizedState, path, value); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - overrideHookState = function (fiber, id, path, value) { - var hook = findHook(fiber, id); + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (hook !== null) { - var newState = copyWithSet(hook.memoizedState, path, value); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + overrideHookStateDeletePath = function (fiber, id, path) { + var hook = findHook(fiber, id); - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; + if (hook !== null) { + var newState = copyWithDelete(hook.memoizedState, path); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - overrideHookStateDeletePath = function (fiber, id, path) { - var hook = findHook(fiber, id); + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (hook !== null) { - var newState = copyWithDelete(hook.memoizedState, path); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + overrideHookStateRenamePath = function (fiber, id, oldPath, newPath) { + var hook = findHook(fiber, id); - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; + if (hook !== null) { + var newState = copyWithRename(hook.memoizedState, oldPath, newPath); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - overrideHookStateRenamePath = function (fiber, id, oldPath, newPath) { - var hook = findHook(fiber, id); + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (hook !== null) { - var newState = copyWithRename(hook.memoizedState, oldPath, newPath); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; // Support DevTools props for function components, forwardRef, memo, host components, etc. - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; // Support DevTools props for function components, forwardRef, memo, host components, etc. + overrideProps = function (fiber, path, value) { + fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value); - overrideProps = function (fiber, path, value) { - fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value); + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + overridePropsDeletePath = function (fiber, path) { + fiber.pendingProps = copyWithDelete(fiber.memoizedProps, path); - overridePropsDeletePath = function (fiber, path) { - fiber.pendingProps = copyWithDelete(fiber.memoizedProps, path); + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + overridePropsRenamePath = function (fiber, oldPath, newPath) { + fiber.pendingProps = copyWithRename(fiber.memoizedProps, oldPath, newPath); - overridePropsRenamePath = function (fiber, oldPath, newPath) { - fiber.pendingProps = copyWithRename( - fiber.memoizedProps, - oldPath, - newPath - ); + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + scheduleUpdate = function (fiber) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - scheduleUpdate = function (fiber) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + setErrorHandler = function (newShouldErrorImpl) { + shouldErrorImpl = newShouldErrorImpl; + }; - setErrorHandler = function (newShouldErrorImpl) { - shouldErrorImpl = newShouldErrorImpl; - }; + setSuspenseHandler = function (newShouldSuspendImpl) { + shouldSuspendImpl = newShouldSuspendImpl; + }; +} - setSuspenseHandler = function (newShouldSuspendImpl) { - shouldSuspendImpl = newShouldSuspendImpl; - }; - } +function findHostInstanceByFiber(fiber) { + var hostFiber = findCurrentHostFiber(fiber); - function findHostInstanceByFiber(fiber) { - var hostFiber = findCurrentHostFiber(fiber); + if (hostFiber === null) { + return null; + } - if (hostFiber === null) { - return null; - } + return hostFiber.stateNode; +} - return hostFiber.stateNode; - } +function emptyFindFiberByHostInstance(instance) { + return null; +} - function emptyFindFiberByHostInstance(instance) { - return null; - } +function getCurrentFiberForDevTools() { + return current; +} - function getCurrentFiberForDevTools() { - return current; - } - - function injectIntoDevTools(devToolsConfig) { - var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance; - return injectInternals({ - bundleType: devToolsConfig.bundleType, - version: devToolsConfig.version, - rendererPackageName: devToolsConfig.rendererPackageName, - rendererConfig: devToolsConfig.rendererConfig, - overrideHookState: overrideHookState, - overrideHookStateDeletePath: overrideHookStateDeletePath, - overrideHookStateRenamePath: overrideHookStateRenamePath, - overrideProps: overrideProps, - overridePropsDeletePath: overridePropsDeletePath, - overridePropsRenamePath: overridePropsRenamePath, - setErrorHandler: setErrorHandler, - setSuspenseHandler: setSuspenseHandler, - scheduleUpdate: scheduleUpdate, - currentDispatcherRef: ReactSharedInternals, - findHostInstanceByFiber: findHostInstanceByFiber, - findFiberByHostInstance: - findFiberByHostInstance || emptyFindFiberByHostInstance, - // React Refresh - findHostInstancesForRefresh: findHostInstancesForRefresh, - scheduleRefresh: scheduleRefresh, - scheduleRoot: scheduleRoot, - setRefreshHandler: setRefreshHandler, - // Enables DevTools to append owner stacks to error messages in DEV mode. - getCurrentFiber: getCurrentFiberForDevTools, - // Enables DevTools to detect reconciler version rather than renderer version - // which may not match for third party renderers. - reconcilerVersion: ReactVersion - }); - } +function injectIntoDevTools(devToolsConfig) { + var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance; + return injectInternals({ + bundleType: devToolsConfig.bundleType, + version: devToolsConfig.version, + rendererPackageName: devToolsConfig.rendererPackageName, + rendererConfig: devToolsConfig.rendererConfig, + overrideHookState: overrideHookState, + overrideHookStateDeletePath: overrideHookStateDeletePath, + overrideHookStateRenamePath: overrideHookStateRenamePath, + overrideProps: overrideProps, + overridePropsDeletePath: overridePropsDeletePath, + overridePropsRenamePath: overridePropsRenamePath, + setErrorHandler: setErrorHandler, + setSuspenseHandler: setSuspenseHandler, + scheduleUpdate: scheduleUpdate, + currentDispatcherRef: ReactSharedInternals, + findHostInstanceByFiber: findHostInstanceByFiber, + findFiberByHostInstance: findFiberByHostInstance || emptyFindFiberByHostInstance, + // React Refresh + findHostInstancesForRefresh: findHostInstancesForRefresh , + scheduleRefresh: scheduleRefresh , + scheduleRoot: scheduleRoot , + setRefreshHandler: setRefreshHandler , + // Enables DevTools to append owner stacks to error messages in DEV mode. + getCurrentFiber: getCurrentFiberForDevTools , + // Enables DevTools to detect reconciler version rather than renderer version + // which may not match for third party renderers. + reconcilerVersion: ReactVersion + }); +} - var act = React.act; // TODO: Remove from public bundle +var act = React.act; // TODO: Remove from public bundle - var defaultTestOptions = { - createNodeMock: function () { - return null; - } - }; +var defaultTestOptions = { + createNodeMock: function () { + return null; + } +}; - function toJSON(inst) { - if (inst.isHidden) { - // Omit timed out children from output entirely. This seems like the least - // surprising behavior. We could perhaps add a separate API that includes - // them, if it turns out people need it. - return null; - } +function toJSON(inst) { + if (inst.isHidden) { + // Omit timed out children from output entirely. This seems like the least + // surprising behavior. We could perhaps add a separate API that includes + // them, if it turns out people need it. + return null; + } - switch (inst.tag) { - case "TEXT": - return inst.text; + switch (inst.tag) { + case 'TEXT': + return inst.text; - case "INSTANCE": { - /* eslint-disable no-unused-vars */ - // We don't include the `children` prop in JSON. - // Instead, we will include the actual rendered children. - var _inst$props = inst.props, + case 'INSTANCE': + { + /* eslint-disable no-unused-vars */ + // We don't include the `children` prop in JSON. + // Instead, we will include the actual rendered children. + var _inst$props = inst.props, props = _objectWithoutPropertiesLoose(_inst$props, ["children"]); - /* eslint-enable */ + /* eslint-enable */ - var renderedChildren = null; - if (inst.children && inst.children.length) { - for (var i = 0; i < inst.children.length; i++) { - var renderedChild = toJSON(inst.children[i]); + var renderedChildren = null; - if (renderedChild !== null) { - if (renderedChildren === null) { - renderedChildren = [renderedChild]; - } else { - renderedChildren.push(renderedChild); - } + if (inst.children && inst.children.length) { + for (var i = 0; i < inst.children.length; i++) { + var renderedChild = toJSON(inst.children[i]); + + if (renderedChild !== null) { + if (renderedChildren === null) { + renderedChildren = [renderedChild]; + } else { + renderedChildren.push(renderedChild); } } } - - var json = { - type: inst.type, - props: props, - children: renderedChildren - }; - Object.defineProperty(json, "$$typeof", { - value: Symbol.for("react.test.json") - }); - return json; } - default: - throw new Error("Unexpected node type in toJSON: " + inst.tag); + var json = { + type: inst.type, + props: props, + children: renderedChildren + }; + Object.defineProperty(json, '$$typeof', { + value: Symbol.for('react.test.json') + }); + return json; } - } - function childrenToTree(node) { - if (!node) { - return null; - } + default: + throw new Error("Unexpected node type in toJSON: " + inst.tag); + } +} - var children = nodeAndSiblingsArray(node); +function childrenToTree(node) { + if (!node) { + return null; + } - if (children.length === 0) { - return null; - } else if (children.length === 1) { - return toTree(children[0]); - } + var children = nodeAndSiblingsArray(node); - return flatten(children.map(toTree)); - } // $FlowFixMe[missing-local-annot] + if (children.length === 0) { + return null; + } else if (children.length === 1) { + return toTree(children[0]); + } - function nodeAndSiblingsArray(nodeWithSibling) { - var array = []; - var node = nodeWithSibling; + return flatten(children.map(toTree)); +} // $FlowFixMe[missing-local-annot] - while (node != null) { - array.push(node); - node = node.sibling; - } - return array; - } // $FlowFixMe[missing-local-annot] +function nodeAndSiblingsArray(nodeWithSibling) { + var array = []; + var node = nodeWithSibling; - function flatten(arr) { - var result = []; - var stack = [ - { - i: 0, - array: arr - } - ]; + while (node != null) { + array.push(node); + node = node.sibling; + } - while (stack.length) { - var n = stack.pop(); + return array; +} // $FlowFixMe[missing-local-annot] - while (n.i < n.array.length) { - var el = n.array[n.i]; - n.i += 1; - if (isArray(el)) { - stack.push(n); - stack.push({ - i: 0, - array: el - }); - break; - } +function flatten(arr) { + var result = []; + var stack = [{ + i: 0, + array: arr + }]; - result.push(el); - } - } + while (stack.length) { + var n = stack.pop(); - return result; - } + while (n.i < n.array.length) { + var el = n.array[n.i]; + n.i += 1; - function toTree(node) { - if (node == null) { - return null; + if (isArray(el)) { + stack.push(n); + stack.push({ + i: 0, + array: el + }); + break; } - switch (node.tag) { - case HostRoot: - return childrenToTree(node.child); + result.push(el); + } + } - case HostPortal: - return childrenToTree(node.child); + return result; +} - case ClassComponent: - return { - nodeType: "component", - type: node.type, - props: assign({}, node.memoizedProps), - instance: node.stateNode, - rendered: childrenToTree(node.child) - }; +function toTree(node) { + if (node == null) { + return null; + } - case FunctionComponent: - case SimpleMemoComponent: - return { - nodeType: "component", - type: node.type, - props: assign({}, node.memoizedProps), - instance: null, - rendered: childrenToTree(node.child) - }; + switch (node.tag) { + case HostRoot: + return childrenToTree(node.child); - case HostHoistable: - case HostSingleton: - case HostComponent: { - return { - nodeType: "host", - type: node.type, - props: assign({}, node.memoizedProps), - instance: null, - // TODO: use createNodeMock here somehow? - rendered: flatten(nodeAndSiblingsArray(node.child).map(toTree)) - }; - } + case HostPortal: + return childrenToTree(node.child); - case HostText: - return node.stateNode.text; + case ClassComponent: + return { + nodeType: 'component', + type: node.type, + props: assign({}, node.memoizedProps), + instance: node.stateNode, + rendered: childrenToTree(node.child) + }; - case Fragment: - case ContextProvider: - case ContextConsumer: - case Mode: - case Profiler: - case ForwardRef: - case MemoComponent: - case IncompleteClassComponent: - case ScopeComponent: - return childrenToTree(node.child); + case FunctionComponent: + case SimpleMemoComponent: + return { + nodeType: 'component', + type: node.type, + props: assign({}, node.memoizedProps), + instance: null, + rendered: childrenToTree(node.child) + }; - default: - throw new Error( - "toTree() does not yet know how to handle nodes with tag=" + - node.tag - ); + case HostHoistable: + case HostSingleton: + case HostComponent: + { + return { + nodeType: 'host', + type: node.type, + props: assign({}, node.memoizedProps), + instance: null, + // TODO: use createNodeMock here somehow? + rendered: flatten(nodeAndSiblingsArray(node.child).map(toTree)) + }; } - } - var validWrapperTypes = new Set([ - FunctionComponent, - ClassComponent, - HostComponent, - ForwardRef, - MemoComponent, - SimpleMemoComponent, // Normally skipped, but used when there's more than one root child. - HostRoot - ]); + case HostText: + return node.stateNode.text; - function getChildren(parent) { - var children = []; - var startingNode = parent; - var node = startingNode; + case Fragment: + case ContextProvider: + case ContextConsumer: + case Mode: + case Profiler: + case ForwardRef: + case MemoComponent: + case IncompleteClassComponent: + case ScopeComponent: + return childrenToTree(node.child); - if (node.child === null) { - return children; - } + default: + throw new Error("toTree() does not yet know how to handle nodes with tag=" + node.tag); + } +} - node.child.return = node; - node = node.child; +var validWrapperTypes = new Set([FunctionComponent, ClassComponent, HostComponent, ForwardRef, MemoComponent, SimpleMemoComponent, // Normally skipped, but used when there's more than one root child. +HostRoot]); - outer: while (true) { - var descend = false; +function getChildren(parent) { + var children = []; + var startingNode = parent; + var node = startingNode; - if (validWrapperTypes.has(node.tag)) { - children.push(wrapFiber(node)); - } else if (node.tag === HostText) { - { - checkPropStringCoercion(node.memoizedProps, "memoizedProps"); - } + if (node.child === null) { + return children; + } - children.push("" + node.memoizedProps); - } else { - descend = true; - } + node.child.return = node; + node = node.child; - if (descend && node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + outer: while (true) { + var descend = false; - while (node.sibling === null) { - if (node.return === startingNode) { - break outer; - } + if (validWrapperTypes.has(node.tag)) { + children.push(wrapFiber(node)); + } else if (node.tag === HostText) { + { + checkPropStringCoercion(node.memoizedProps, 'memoizedProps'); + } - node = node.return; - } + children.push('' + node.memoizedProps); + } else { + descend = true; + } + + if (descend && node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } - node.sibling.return = node.return; - node = node.sibling; + while (node.sibling === null) { + if (node.return === startingNode) { + break outer; } - return children; + node = node.return; } - var ReactTestInstance = /*#__PURE__*/ (function () { - var _proto = ReactTestInstance.prototype; + node.sibling.return = node.return; + node = node.sibling; + } - _proto._currentFiber = function _currentFiber() { - // Throws if this component has been unmounted. - var fiber = findCurrentFiberUsingSlowPath(this._fiber); + return children; +} - if (fiber === null) { - throw new Error( - "Can't read from currently-mounting component. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } +var ReactTestInstance = /*#__PURE__*/function () { + var _proto = ReactTestInstance.prototype; - return fiber; - }; + _proto._currentFiber = function _currentFiber() { + // Throws if this component has been unmounted. + var fiber = findCurrentFiberUsingSlowPath(this._fiber); - function ReactTestInstance(fiber) { - this._fiber = void 0; + if (fiber === null) { + throw new Error("Can't read from currently-mounting component. This error is likely " + 'caused by a bug in React. Please file an issue.'); + } - if (!validWrapperTypes.has(fiber.tag)) { - throw new Error( - "Unexpected object passed to ReactTestInstance constructor (tag: " + - fiber.tag + - "). " + - "This is probably a bug in React." - ); - } + return fiber; + }; - this._fiber = fiber; - } + function ReactTestInstance(fiber) { + this._fiber = void 0; - // Custom search functions - _proto.find = function find(predicate) { - return expectOne( - this.findAll(predicate, { - deep: false - }), - "matching custom predicate: " + predicate.toString() - ); - }; + if (!validWrapperTypes.has(fiber.tag)) { + throw new Error("Unexpected object passed to ReactTestInstance constructor (tag: " + fiber.tag + "). " + 'This is probably a bug in React.'); + } - _proto.findByType = function findByType(type) { - return expectOne( - this.findAllByType(type, { - deep: false - }), - 'with node type: "' + - (getComponentNameFromType(type) || "Unknown") + - '"' - ); - }; + this._fiber = fiber; + } - _proto.findByProps = function findByProps(props) { - return expectOne( - this.findAllByProps(props, { - deep: false - }), - "with props: " + JSON.stringify(props) - ); - }; + // Custom search functions + _proto.find = function find(predicate) { + return expectOne(this.findAll(predicate, { + deep: false + }), "matching custom predicate: " + predicate.toString()); + }; - _proto.findAll = function findAll(predicate) { - var options = - arguments.length > 1 && arguments[1] !== undefined - ? arguments[1] - : null; - return _findAll(this, predicate, options); - }; + _proto.findByType = function findByType(type) { + return expectOne(this.findAllByType(type, { + deep: false + }), "with node type: \"" + (getComponentNameFromType(type) || 'Unknown') + "\""); + }; - _proto.findAllByType = function findAllByType(type) { - var options = - arguments.length > 1 && arguments[1] !== undefined - ? arguments[1] - : null; - return _findAll( - this, - function (node) { - return node.type === type; - }, - options - ); - }; + _proto.findByProps = function findByProps(props) { + return expectOne(this.findAllByProps(props, { + deep: false + }), "with props: " + JSON.stringify(props)); + }; - _proto.findAllByProps = function findAllByProps(props) { - var options = - arguments.length > 1 && arguments[1] !== undefined - ? arguments[1] - : null; - return _findAll( - this, - function (node) { - return node.props && propsMatch(node.props, props); - }, - options - ); - }; + _proto.findAll = function findAll(predicate) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null; + return _findAll(this, predicate, options); + }; - _createClass(ReactTestInstance, [ - { - key: "instance", - get: function () { - var tag = this._fiber.tag; - - if ( - tag === HostComponent || - tag === HostHoistable || - tag === HostSingleton - ) { - return getPublicInstance(this._fiber.stateNode); - } else { - return this._fiber.stateNode; - } - } - }, - { - key: "type", - get: function () { - return this._fiber.type; - } - }, - { - key: "props", - get: function () { - return this._currentFiber().memoizedProps; - } - }, - { - key: "parent", - get: function () { - var parent = this._fiber.return; - - while (parent !== null) { - if (validWrapperTypes.has(parent.tag)) { - if (parent.tag === HostRoot) { - // Special case: we only "materialize" instances for roots - // if they have more than a single child. So we'll check that now. - if (getChildren(parent).length < 2) { - return null; - } - } + _proto.findAllByType = function findAllByType(type) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null; + return _findAll(this, function (node) { + return node.type === type; + }, options); + }; - return wrapFiber(parent); - } + _proto.findAllByProps = function findAllByProps(props) { + var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null; + return _findAll(this, function (node) { + return node.props && propsMatch(node.props, props); + }, options); + }; - parent = parent.return; - } + _createClass(ReactTestInstance, [{ + key: "instance", + get: function () { + var tag = this._fiber.tag; - return null; - } - }, - { - key: "children", - get: function () { - return getChildren(this._currentFiber()); + if (tag === HostComponent || tag === HostHoistable || tag === HostSingleton) { + return getPublicInstance(this._fiber.stateNode); + } else { + return this._fiber.stateNode; + } + } + }, { + key: "type", + get: function () { + return this._fiber.type; + } + }, { + key: "props", + get: function () { + return this._currentFiber().memoizedProps; + } + }, { + key: "parent", + get: function () { + var parent = this._fiber.return; + + while (parent !== null) { + if (validWrapperTypes.has(parent.tag)) { + if (parent.tag === HostRoot) { + // Special case: we only "materialize" instances for roots + // if they have more than a single child. So we'll check that now. + if (getChildren(parent).length < 2) { + return null; + } } + + return wrapFiber(parent); } - ]); - return ReactTestInstance; - })(); + parent = parent.return; + } - function _findAll(root, predicate, options) { - var deep = options ? options.deep : true; - var results = []; + return null; + } + }, { + key: "children", + get: function () { + return getChildren(this._currentFiber()); + } + }]); - if (predicate(root)) { - results.push(root); + return ReactTestInstance; +}(); - if (!deep) { - return results; - } - } +function _findAll(root, predicate, options) { + var deep = options ? options.deep : true; + var results = []; - root.children.forEach(function (child) { - if (typeof child === "string") { - return; - } + if (predicate(root)) { + results.push(root); - results.push.apply(results, _findAll(child, predicate, options)); - }); + if (!deep) { return results; } + } - function expectOne(all, message) { - if (all.length === 1) { - return all[0]; - } - - var prefix = - all.length === 0 - ? "No instances found " - : "Expected 1 but found " + all.length + " instances "; - throw new Error(prefix + message); + root.children.forEach(function (child) { + if (typeof child === 'string') { + return; } - function propsMatch(props, filter) { - for (var key in filter) { - if (props[key] !== filter[key]) { - return false; - } - } + results.push.apply(results, _findAll(child, predicate, options)); + }); + return results; +} - return true; +function expectOne(all, message) { + if (all.length === 1) { + return all[0]; + } + + var prefix = all.length === 0 ? 'No instances found ' : "Expected 1 but found " + all.length + " instances "; + throw new Error(prefix + message); +} + +function propsMatch(props, filter) { + for (var key in filter) { + if (props[key] !== filter[key]) { + return false; } + } - function create(element, options) { - var createNodeMock = defaultTestOptions.createNodeMock; - var isConcurrentOnly = disableLegacyMode === true; - var isConcurrent = isConcurrentOnly; - var isStrictMode = false; - var concurrentUpdatesByDefault = null; + return true; +} - if (typeof options === "object" && options !== null) { - if (typeof options.createNodeMock === "function") { - // $FlowFixMe[incompatible-type] found when upgrading Flow - createNodeMock = options.createNodeMock; - } +function create(element, options) { - { - isConcurrent = options.unstable_isConcurrent; - } + var createNodeMock = defaultTestOptions.createNodeMock; + var isConcurrentOnly = disableLegacyMode === true ; + var isConcurrent = isConcurrentOnly; + var isStrictMode = false; + var concurrentUpdatesByDefault = null; - if (options.unstable_strictMode === true) { - isStrictMode = true; - } + if (typeof options === 'object' && options !== null) { + if (typeof options.createNodeMock === 'function') { + // $FlowFixMe[incompatible-type] found when upgrading Flow + createNodeMock = options.createNodeMock; + } - { - if (options.unstable_concurrentUpdatesByDefault !== undefined) { - concurrentUpdatesByDefault = - options.unstable_concurrentUpdatesByDefault; - } - } - } + { + isConcurrent = options.unstable_isConcurrent; + } - var container = { - children: [], - createNodeMock: createNodeMock, - tag: "CONTAINER" - }; - var root = createContainer( - container, - isConcurrent ? ConcurrentRoot : LegacyRoot, - null, - isStrictMode, - concurrentUpdatesByDefault, - "", - defaultOnUncaughtError, - defaultOnCaughtError, - defaultOnRecoverableError, - null - ); - - if (root == null) { - throw new Error("something went wrong"); - } - - updateContainer(element, root, null, null); - var entry = { - _Scheduler: Scheduler, - root: undefined, - // makes flow happy - // we define a 'getter' for 'root' below using 'Object.defineProperty' - toJSON: function () { - if (root == null || root.current == null || container == null) { - return null; - } + if (options.unstable_strictMode === true) { + isStrictMode = true; + } - if (container.children.length === 0) { - return null; - } + { + if (options.unstable_concurrentUpdatesByDefault !== undefined) { + concurrentUpdatesByDefault = options.unstable_concurrentUpdatesByDefault; + } + } + } + + var container = { + children: [], + createNodeMock: createNodeMock, + tag: 'CONTAINER' + }; + var root = createContainer(container, isConcurrent ? ConcurrentRoot : LegacyRoot, null, isStrictMode, concurrentUpdatesByDefault, '', defaultOnUncaughtError, defaultOnCaughtError, defaultOnRecoverableError, null); + + if (root == null) { + throw new Error('something went wrong'); + } + + updateContainer(element, root, null, null); + var entry = { + _Scheduler: Scheduler, + root: undefined, + // makes flow happy + // we define a 'getter' for 'root' below using 'Object.defineProperty' + toJSON: function () { + if (root == null || root.current == null || container == null) { + return null; + } - if (container.children.length === 1) { - return toJSON(container.children[0]); - } + if (container.children.length === 0) { + return null; + } - if ( - container.children.length === 2 && - container.children[0].isHidden === true && - container.children[1].isHidden === false - ) { - // Omit timed out children from output entirely, including the fact that we - // temporarily wrap fallback and timed out children in an array. - return toJSON(container.children[1]); - } + if (container.children.length === 1) { + return toJSON(container.children[0]); + } - var renderedChildren = null; + if (container.children.length === 2 && container.children[0].isHidden === true && container.children[1].isHidden === false) { + // Omit timed out children from output entirely, including the fact that we + // temporarily wrap fallback and timed out children in an array. + return toJSON(container.children[1]); + } - if (container.children && container.children.length) { - for (var i = 0; i < container.children.length; i++) { - var renderedChild = toJSON(container.children[i]); + var renderedChildren = null; - if (renderedChild !== null) { - if (renderedChildren === null) { - renderedChildren = [renderedChild]; - } else { - renderedChildren.push(renderedChild); - } - } + if (container.children && container.children.length) { + for (var i = 0; i < container.children.length; i++) { + var renderedChild = toJSON(container.children[i]); + + if (renderedChild !== null) { + if (renderedChildren === null) { + renderedChildren = [renderedChild]; + } else { + renderedChildren.push(renderedChild); } } + } + } - return renderedChildren; - }, - toTree: function () { - if (root == null || root.current == null) { - return null; - } + return renderedChildren; + }, + toTree: function () { + if (root == null || root.current == null) { + return null; + } - return toTree(root.current); - }, - update: function (newElement) { - if (root == null || root.current == null) { - return; - } + return toTree(root.current); + }, + update: function (newElement) { + if (root == null || root.current == null) { + return; + } - updateContainer(newElement, root, null, null); - }, - unmount: function () { - if (root == null || root.current == null) { - return; - } + updateContainer(newElement, root, null, null); + }, + unmount: function () { + if (root == null || root.current == null) { + return; + } - updateContainer(null, root, null, null); // $FlowFixMe[incompatible-type] found when upgrading Flow + updateContainer(null, root, null, null); // $FlowFixMe[incompatible-type] found when upgrading Flow - container = null; - root = null; - }, - getInstance: function () { - if (root == null || root.current == null) { - return null; - } + container = null; + root = null; + }, + getInstance: function () { + if (root == null || root.current == null) { + return null; + } - return getPublicRootInstance(root); - }, - unstable_flushSync: flushSyncFromReconciler - }; - Object.defineProperty(entry, "root", { - configurable: true, - enumerable: true, - get: function () { - if (root === null) { - throw new Error("Can't access .root on unmounted test renderer"); - } + return getPublicRootInstance(root); + }, + unstable_flushSync: flushSyncFromReconciler + }; + Object.defineProperty(entry, 'root', { + configurable: true, + enumerable: true, + get: function () { + if (root === null) { + throw new Error("Can't access .root on unmounted test renderer"); + } - var children = getChildren(root.current); + var children = getChildren(root.current); - if (children.length === 0) { - throw new Error("Can't access .root on unmounted test renderer"); - } else if (children.length === 1) { - // Normally, we skip the root and just give you the child. - return children[0]; - } else { - // However, we give you the root if there's more than one root child. - // We could make this the behavior for all cases but it would be a breaking change. - // $FlowFixMe[incompatible-use] found when upgrading Flow - return wrapFiber(root.current); - } - } - }); - return entry; + if (children.length === 0) { + throw new Error("Can't access .root on unmounted test renderer"); + } else if (children.length === 1) { + // Normally, we skip the root and just give you the child. + return children[0]; + } else { + // However, we give you the root if there's more than one root child. + // We could make this the behavior for all cases but it would be a breaking change. + // $FlowFixMe[incompatible-use] found when upgrading Flow + return wrapFiber(root.current); + } } + }); + return entry; +} - var fiberToWrapper = new WeakMap(); +var fiberToWrapper = new WeakMap(); - function wrapFiber(fiber) { - var wrapper = fiberToWrapper.get(fiber); +function wrapFiber(fiber) { + var wrapper = fiberToWrapper.get(fiber); - if (wrapper === undefined && fiber.alternate !== null) { - wrapper = fiberToWrapper.get(fiber.alternate); - } + if (wrapper === undefined && fiber.alternate !== null) { + wrapper = fiberToWrapper.get(fiber.alternate); + } - if (wrapper === undefined) { - wrapper = new ReactTestInstance(fiber); - fiberToWrapper.set(fiber, wrapper); - } + if (wrapper === undefined) { + wrapper = new ReactTestInstance(fiber); + fiberToWrapper.set(fiber, wrapper); + } - return wrapper; - } // Enable ReactTestRenderer to be used to test DevTools integration. + return wrapper; +} // Enable ReactTestRenderer to be used to test DevTools integration. - injectIntoDevTools({ - findFiberByHostInstance: function () { - throw new Error( - "TestRenderer does not support findFiberByHostInstance()" - ); - }, - bundleType: 1, - version: ReactVersion, - rendererPackageName: "react-test-renderer" - }); - exports._Scheduler = Scheduler; - exports.act = act; - exports.create = create; - exports.unstable_batchedUpdates = batchedUpdates; +injectIntoDevTools({ + findFiberByHostInstance: function () { + throw new Error('TestRenderer does not support findFiberByHostInstance()'); + }, + bundleType: 1 , + version: ReactVersion, + rendererPackageName: 'react-test-renderer' +}); + +exports._Scheduler = Scheduler; +exports.act = act; +exports.create = create; +exports.unstable_batchedUpdates = batchedUpdates; })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXDEVRuntime-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXDEVRuntime-dev.js index ee31c6647610e..c6f601d067d08 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXDEVRuntime-dev.js +++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXDEVRuntime-dev.js @@ -7,1685 +7,1514 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<<7bcb460fce55ee6870184e537edd4d8f>> + * @generated SignedSource<<8f878889d9995d2ae240b302c52058bd>> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; - - var React = require("react"); - var dynamicFlagsUntyped = require("ReactNativeInternalFeatureFlags"); - - // ATTENTION - // When adding new symbols to this file, - // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' - // The Symbol used to tag the ReactElement-like types. - var REACT_ELEMENT_TYPE = Symbol.for("react.element"); - var REACT_PORTAL_TYPE = Symbol.for("react.portal"); - var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); - var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); - var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); - var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); // TODO: Delete with enableRenderableContext - - var REACT_CONSUMER_TYPE = Symbol.for("react.consumer"); - var REACT_CONTEXT_TYPE = Symbol.for("react.context"); - var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); - var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); - var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); - var REACT_MEMO_TYPE = Symbol.for("react.memo"); - var REACT_LAZY_TYPE = Symbol.for("react.lazy"); - var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); - var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; - var FAUX_ITERATOR_SYMBOL = "@@iterator"; - function getIteratorFn(maybeIterable) { - if (maybeIterable === null || typeof maybeIterable !== "object") { - return null; - } + (function() { +'use strict'; + +var React = require('react'); +var dynamicFlagsUntyped = require('ReactNativeInternalFeatureFlags'); + +// ATTENTION +// When adding new symbols to this file, +// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' +// The Symbol used to tag the ReactElement-like types. +var REACT_ELEMENT_TYPE = Symbol.for('react.element'); +var REACT_PORTAL_TYPE = Symbol.for('react.portal'); +var REACT_FRAGMENT_TYPE = Symbol.for('react.fragment'); +var REACT_STRICT_MODE_TYPE = Symbol.for('react.strict_mode'); +var REACT_PROFILER_TYPE = Symbol.for('react.profiler'); +var REACT_PROVIDER_TYPE = Symbol.for('react.provider'); // TODO: Delete with enableRenderableContext + +var REACT_CONSUMER_TYPE = Symbol.for('react.consumer'); +var REACT_CONTEXT_TYPE = Symbol.for('react.context'); +var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref'); +var REACT_SUSPENSE_TYPE = Symbol.for('react.suspense'); +var REACT_SUSPENSE_LIST_TYPE = Symbol.for('react.suspense_list'); +var REACT_MEMO_TYPE = Symbol.for('react.memo'); +var REACT_LAZY_TYPE = Symbol.for('react.lazy'); +var REACT_OFFSCREEN_TYPE = Symbol.for('react.offscreen'); +var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; +var FAUX_ITERATOR_SYMBOL = '@@iterator'; +function getIteratorFn(maybeIterable) { + if (maybeIterable === null || typeof maybeIterable !== 'object') { + return null; + } + + var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]; + + if (typeof maybeIterator === 'function') { + return maybeIterator; + } + + return null; +} - var maybeIterator = - (MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) || - maybeIterable[FAUX_ITERATOR_SYMBOL]; +var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; - if (typeof maybeIterator === "function") { - return maybeIterator; +function error(format) { + { + { + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + args[_key2 - 1] = arguments[_key2]; } - return null; + printWarning('error', format, args); } + } +} - var ReactSharedInternals = - React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; +function printWarning(level, format, args) { + // When changing this logic, you might want to also + // update consoleWithStackDev.www.js as well. + { + var stack = ReactSharedInternals.getStackAddendum(); - function error(format) { - { - { - for ( - var _len2 = arguments.length, - args = new Array(_len2 > 1 ? _len2 - 1 : 0), - _key2 = 1; - _key2 < _len2; - _key2++ - ) { - args[_key2 - 1] = arguments[_key2]; - } + if (stack !== '') { + format += '%s'; + args = args.concat([stack]); + } // eslint-disable-next-line react-internal/safe-string-coercion - printWarning("error", format, args); - } - } - } - function printWarning(level, format, args) { - // When changing this logic, you might want to also - // update consoleWithStackDev.www.js as well. - { - var stack = ReactSharedInternals.getStackAddendum(); + var argsWithFormat = args.map(function (item) { + return String(item); + }); // Careful: RN currently depends on this prefix - if (stack !== "") { - format += "%s"; - args = args.concat([stack]); - } // eslint-disable-next-line react-internal/safe-string-coercion + argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it + // breaks IE9: https://github.com/facebook/react/issues/13610 + // eslint-disable-next-line react-internal/no-production-logging - var argsWithFormat = args.map(function (item) { - return String(item); - }); // Careful: RN currently depends on this prefix + Function.prototype.apply.call(console[level], console, argsWithFormat); + } +} - argsWithFormat.unshift("Warning: " + format); // We intentionally don't use spread (or .apply) directly because it - // breaks IE9: https://github.com/facebook/react/issues/13610 - // eslint-disable-next-line react-internal/no-production-logging +// Re-export dynamic flags from the internal module. +var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on +// the exports object every time a flag is read. - Function.prototype.apply.call(console[level], console, argsWithFormat); - } - } +var enableComponentStackLocations = dynamicFlags.enableComponentStackLocations, + enableRenderableContext = dynamicFlags.enableRenderableContext, + disableDefaultPropsExceptForClasses = dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. +var enableDebugTracing = false; +var enableScopeAPI = false; +var enableLegacyHidden = false; +var enableTransitionTracing = false; - // Re-export dynamic flags from the internal module. - var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on - // the exports object every time a flag is read. - - var enableComponentStackLocations = - dynamicFlags.enableComponentStackLocations, - enableRenderableContext = dynamicFlags.enableRenderableContext, - disableDefaultPropsExceptForClasses = - dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. - var enableDebugTracing = false; - var enableScopeAPI = false; - var enableLegacyHidden = false; - var enableTransitionTracing = false; - - function getWrappedName$1(outerType, innerType, wrapperName) { - var displayName = outerType.displayName; - - if (displayName) { - return displayName; - } +function getWrappedName$1(outerType, innerType, wrapperName) { + var displayName = outerType.displayName; - var functionName = innerType.displayName || innerType.name || ""; - return functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName; - } // Keep in sync with react-reconciler/getComponentNameFromFiber + if (displayName) { + return displayName; + } - function getContextName$1(type) { - return type.displayName || "Context"; - } + var functionName = innerType.displayName || innerType.name || ''; + return functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName; +} // Keep in sync with react-reconciler/getComponentNameFromFiber - var REACT_CLIENT_REFERENCE$2 = Symbol.for("react.client.reference"); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. - function getComponentNameFromType(type) { - if (type == null) { - // Host root, text node or just invalid type. - return null; - } +function getContextName$1(type) { + return type.displayName || 'Context'; +} - if (typeof type === "function") { - if (type.$$typeof === REACT_CLIENT_REFERENCE$2) { - // TODO: Create a convention for naming client references with debug info. - return null; - } +var REACT_CLIENT_REFERENCE$2 = Symbol.for('react.client.reference'); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. - return type.displayName || type.name || null; - } +function getComponentNameFromType(type) { + if (type == null) { + // Host root, text node or just invalid type. + return null; + } - if (typeof type === "string") { - return type; - } + if (typeof type === 'function') { + if (type.$$typeof === REACT_CLIENT_REFERENCE$2) { + // TODO: Create a convention for naming client references with debug info. + return null; + } - switch (type) { - case REACT_FRAGMENT_TYPE: - return "Fragment"; + return type.displayName || type.name || null; + } - case REACT_PORTAL_TYPE: - return "Portal"; + if (typeof type === 'string') { + return type; + } - case REACT_PROFILER_TYPE: - return "Profiler"; + switch (type) { + case REACT_FRAGMENT_TYPE: + return 'Fragment'; - case REACT_STRICT_MODE_TYPE: - return "StrictMode"; + case REACT_PORTAL_TYPE: + return 'Portal'; - case REACT_SUSPENSE_TYPE: - return "Suspense"; + case REACT_PROFILER_TYPE: + return 'Profiler'; - case REACT_SUSPENSE_LIST_TYPE: - return "SuspenseList"; + case REACT_STRICT_MODE_TYPE: + return 'StrictMode'; + + case REACT_SUSPENSE_TYPE: + return 'Suspense'; + + case REACT_SUSPENSE_LIST_TYPE: + return 'SuspenseList'; + + } + + if (typeof type === 'object') { + { + if (typeof type.tag === 'number') { + error('Received an unexpected object in getComponentNameFromType(). ' + 'This is likely a bug in React. Please file an issue.'); } + } - if (typeof type === "object") { - { - if (typeof type.tag === "number") { - error( - "Received an unexpected object in getComponentNameFromType(). " + - "This is likely a bug in React. Please file an issue." - ); - } + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + if (enableRenderableContext) { + return null; + } else { + var provider = type; + return getContextName$1(provider._context) + '.Provider'; } - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: - if (enableRenderableContext) { - return null; - } else { - var provider = type; - return getContextName$1(provider._context) + ".Provider"; - } - - case REACT_CONTEXT_TYPE: - var context = type; + case REACT_CONTEXT_TYPE: + var context = type; - if (enableRenderableContext) { - return getContextName$1(context) + ".Provider"; - } else { - return getContextName$1(context) + ".Consumer"; - } + if (enableRenderableContext) { + return getContextName$1(context) + '.Provider'; + } else { + return getContextName$1(context) + '.Consumer'; + } - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - var consumer = type; - return getContextName$1(consumer._context) + ".Consumer"; - } else { - return null; - } + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + var consumer = type; + return getContextName$1(consumer._context) + '.Consumer'; + } else { + return null; + } - case REACT_FORWARD_REF_TYPE: - return getWrappedName$1(type, type.render, "ForwardRef"); + case REACT_FORWARD_REF_TYPE: + return getWrappedName$1(type, type.render, 'ForwardRef'); - case REACT_MEMO_TYPE: - var outerName = type.displayName || null; + case REACT_MEMO_TYPE: + var outerName = type.displayName || null; - if (outerName !== null) { - return outerName; - } + if (outerName !== null) { + return outerName; + } - return getComponentNameFromType(type.type) || "Memo"; + return getComponentNameFromType(type.type) || 'Memo'; - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; - try { - return getComponentNameFromType(init(payload)); - } catch (x) { - return null; - } + try { + return getComponentNameFromType(init(payload)); + } catch (x) { + return null; } } - } - - return null; } + } - // $FlowFixMe[method-unbinding] - var hasOwnProperty = Object.prototype.hasOwnProperty; - - var assign = Object.assign; - - /* - * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol - * and Temporal.* types. See https://github.com/facebook/react/pull/22064. - * - * The functions in this module will throw an easier-to-understand, - * easier-to-debug exception with a clear errors message message explaining the - * problem. (Instead of a confusing exception thrown inside the implementation - * of the `value` object). - */ - // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. - function typeName(value) { - { - // toStringTag is needed for namespaced types like Temporal.Instant - var hasToStringTag = typeof Symbol === "function" && Symbol.toStringTag; - var type = - (hasToStringTag && value[Symbol.toStringTag]) || - value.constructor.name || - "Object"; // $FlowFixMe[incompatible-return] + return null; +} - return type; - } - } // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +// $FlowFixMe[method-unbinding] +var hasOwnProperty = Object.prototype.hasOwnProperty; - function willCoercionThrow(value) { - { - try { - testStringCoercion(value); - return false; - } catch (e) { - return true; - } - } - } +var assign = Object.assign; - function testStringCoercion(value) { - // If you ended up here by following an exception call stack, here's what's - // happened: you supplied an object or symbol value to React (as a prop, key, - // DOM attribute, CSS property, string ref, etc.) and when React tried to - // coerce it to a string using `'' + value`, an exception was thrown. - // - // The most common types that will cause this exception are `Symbol` instances - // and Temporal objects like `Temporal.Instant`. But any object that has a - // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this - // exception. (Library authors do this to prevent users from using built-in - // numeric operators like `+` or comparison operators like `>=` because custom - // methods are needed to perform accurate arithmetic or comparison.) - // - // To fix the problem, coerce this object or symbol value to a string before - // passing it to React. The most reliable way is usually `String(value)`. - // - // To find which value is throwing, check the browser or debugger console. - // Before this exception was thrown, there should be `console.error` output - // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the - // problem and how that type was used: key, atrribute, input value prop, etc. - // In most cases, this console output also shows the component and its - // ancestor components where the exception happened. - // - // eslint-disable-next-line react-internal/safe-string-coercion - return "" + value; +/* + * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol + * and Temporal.* types. See https://github.com/facebook/react/pull/22064. + * + * The functions in this module will throw an easier-to-understand, + * easier-to-debug exception with a clear errors message message explaining the + * problem. (Instead of a confusing exception thrown inside the implementation + * of the `value` object). + */ +// $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +function typeName(value) { + { + // toStringTag is needed for namespaced types like Temporal.Instant + var hasToStringTag = typeof Symbol === 'function' && Symbol.toStringTag; + var type = hasToStringTag && value[Symbol.toStringTag] || value.constructor.name || 'Object'; // $FlowFixMe[incompatible-return] + + return type; + } +} // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + + +function willCoercionThrow(value) { + { + try { + testStringCoercion(value); + return false; + } catch (e) { + return true; } - function checkKeyStringCoercion(value) { - { - if (willCoercionThrow(value)) { - error( - "The provided key is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - typeName(value) - ); - - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } + } +} + +function testStringCoercion(value) { + // If you ended up here by following an exception call stack, here's what's + // happened: you supplied an object or symbol value to React (as a prop, key, + // DOM attribute, CSS property, string ref, etc.) and when React tried to + // coerce it to a string using `'' + value`, an exception was thrown. + // + // The most common types that will cause this exception are `Symbol` instances + // and Temporal objects like `Temporal.Instant`. But any object that has a + // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this + // exception. (Library authors do this to prevent users from using built-in + // numeric operators like `+` or comparison operators like `>=` because custom + // methods are needed to perform accurate arithmetic or comparison.) + // + // To fix the problem, coerce this object or symbol value to a string before + // passing it to React. The most reliable way is usually `String(value)`. + // + // To find which value is throwing, check the browser or debugger console. + // Before this exception was thrown, there should be `console.error` output + // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the + // problem and how that type was used: key, atrribute, input value prop, etc. + // In most cases, this console output also shows the component and its + // ancestor components where the exception happened. + // + // eslint-disable-next-line react-internal/safe-string-coercion + return '' + value; +} +function checkKeyStringCoercion(value) { + { + if (willCoercionThrow(value)) { + error('The provided key is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', typeName(value)); + + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } - function checkPropStringCoercion(value, propName) { - { - if (willCoercionThrow(value)) { - error( - "The provided `%s` prop is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - propName, - typeName(value) - ); - - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } + } +} +function checkPropStringCoercion(value, propName) { + { + if (willCoercionThrow(value)) { + error('The provided `%s` prop is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', propName, typeName(value)); + + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } + } +} - var REACT_CLIENT_REFERENCE$1 = Symbol.for("react.client.reference"); - function isValidElementType(type) { - if (typeof type === "string" || typeof type === "function") { - return true; - } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). - - if ( - type === REACT_FRAGMENT_TYPE || - type === REACT_PROFILER_TYPE || - enableDebugTracing || - type === REACT_STRICT_MODE_TYPE || - type === REACT_SUSPENSE_TYPE || - type === REACT_SUSPENSE_LIST_TYPE || - enableLegacyHidden || - type === REACT_OFFSCREEN_TYPE || - enableScopeAPI || - enableTransitionTracing - ) { - return true; - } +var REACT_CLIENT_REFERENCE$1 = Symbol.for('react.client.reference'); +function isValidElementType(type) { + if (typeof type === 'string' || typeof type === 'function') { + return true; + } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). - if (typeof type === "object" && type !== null) { - if ( - type.$$typeof === REACT_LAZY_TYPE || - type.$$typeof === REACT_MEMO_TYPE || - type.$$typeof === REACT_CONTEXT_TYPE || - (!enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE) || - (enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE) || - type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object - // types supported by any Flight configuration anywhere since - // we don't know which Flight build this will end up being used - // with. - type.$$typeof === REACT_CLIENT_REFERENCE$1 || - type.getModuleId !== undefined - ) { - return true; - } - } - return false; + if (type === REACT_FRAGMENT_TYPE || type === REACT_PROFILER_TYPE || enableDebugTracing || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || enableLegacyHidden || type === REACT_OFFSCREEN_TYPE || enableScopeAPI || enableTransitionTracing ) { + return true; + } + + if (typeof type === 'object' && type !== null) { + if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || !enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE || enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object + // types supported by any Flight configuration anywhere since + // we don't know which Flight build this will end up being used + // with. + type.$$typeof === REACT_CLIENT_REFERENCE$1 || type.getModuleId !== undefined) { + return true; } + } - var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare + return false; +} - function isArray(a) { - return isArrayImpl(a); - } +var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare - // Helpers to patch console.logs to avoid logging during side-effect free - // replaying on render function. This currently only patches the object - // lazily which won't cover if the log function was extracted eagerly. - // We could also eagerly patch the method. - var disabledDepth = 0; - var prevLog; - var prevInfo; - var prevWarn; - var prevError; - var prevGroup; - var prevGroupCollapsed; - var prevGroupEnd; - - function disabledLog() {} - - disabledLog.__reactDisabledLog = true; - function disableLogs() { - { - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - prevLog = console.log; - prevInfo = console.info; - prevWarn = console.warn; - prevError = console.error; - prevGroup = console.group; - prevGroupCollapsed = console.groupCollapsed; - prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 - - var props = { - configurable: true, - enumerable: true, - value: disabledLog, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - info: props, - log: props, - warn: props, - error: props, - group: props, - groupCollapsed: props, - groupEnd: props - }); - /* eslint-enable react-internal/no-production-logging */ - } +function isArray(a) { + return isArrayImpl(a); +} - disabledDepth++; - } +// Helpers to patch console.logs to avoid logging during side-effect free +// replaying on render function. This currently only patches the object +// lazily which won't cover if the log function was extracted eagerly. +// We could also eagerly patch the method. +var disabledDepth = 0; +var prevLog; +var prevInfo; +var prevWarn; +var prevError; +var prevGroup; +var prevGroupCollapsed; +var prevGroupEnd; + +function disabledLog() {} + +disabledLog.__reactDisabledLog = true; +function disableLogs() { + { + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + prevLog = console.log; + prevInfo = console.info; + prevWarn = console.warn; + prevError = console.error; + prevGroup = console.group; + prevGroupCollapsed = console.groupCollapsed; + prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 + + var props = { + configurable: true, + enumerable: true, + value: disabledLog, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + info: props, + log: props, + warn: props, + error: props, + group: props, + groupCollapsed: props, + groupEnd: props + }); + /* eslint-enable react-internal/no-production-logging */ } - function reenableLogs() { - { - disabledDepth--; - - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - var props = { - configurable: true, - enumerable: true, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - log: assign({}, props, { - value: prevLog - }), - info: assign({}, props, { - value: prevInfo - }), - warn: assign({}, props, { - value: prevWarn - }), - error: assign({}, props, { - value: prevError - }), - group: assign({}, props, { - value: prevGroup - }), - groupCollapsed: assign({}, props, { - value: prevGroupCollapsed - }), - groupEnd: assign({}, props, { - value: prevGroupEnd - }) - }); - /* eslint-enable react-internal/no-production-logging */ - } - if (disabledDepth < 0) { - error( - "disabledDepth fell below zero. " + - "This is a bug in React. Please file an issue." - ); - } - } + disabledDepth++; + } +} +function reenableLogs() { + { + disabledDepth--; + + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + var props = { + configurable: true, + enumerable: true, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + log: assign({}, props, { + value: prevLog + }), + info: assign({}, props, { + value: prevInfo + }), + warn: assign({}, props, { + value: prevWarn + }), + error: assign({}, props, { + value: prevError + }), + group: assign({}, props, { + value: prevGroup + }), + groupCollapsed: assign({}, props, { + value: prevGroupCollapsed + }), + groupEnd: assign({}, props, { + value: prevGroupEnd + }) + }); + /* eslint-enable react-internal/no-production-logging */ } - var prefix; - function describeBuiltInComponentFrame(name) { - if (enableComponentStackLocations) { - if (prefix === undefined) { - // Extract the VM specific prefix used by each line. - try { - throw Error(); - } catch (x) { - var match = x.stack.trim().match(/\n( *(at )?)/); - prefix = (match && match[1]) || ""; - } - } // We use the prefix to ensure our stacks line up with native stack frames. - - return "\n" + prefix + name; - } else { - return describeComponentFrame(name); - } + if (disabledDepth < 0) { + error('disabledDepth fell below zero. ' + 'This is a bug in React. Please file an issue.'); } - var reentry = false; - var componentFrameCache; + } +} - { - var PossiblyWeakMap = typeof WeakMap === "function" ? WeakMap : Map; - componentFrameCache = new PossiblyWeakMap(); - } - /** - * Leverages native browser/VM stack frames to get proper details (e.g. - * filename, line + col number) for a single component in a component stack. We - * do this by: - * (1) throwing and catching an error in the function - this will be our - * control error. - * (2) calling the component which will eventually throw an error that we'll - * catch - this will be our sample error. - * (3) diffing the control and sample error stacks to find the stack frame - * which represents our component. - */ - - function describeNativeComponentFrame(fn, construct) { - // If something asked for a stack inside a fake render, it should get ignored. - if (!fn || reentry) { - return ""; +var prefix; +function describeBuiltInComponentFrame(name) { + if (enableComponentStackLocations) { + if (prefix === undefined) { + // Extract the VM specific prefix used by each line. + try { + throw Error(); + } catch (x) { + var match = x.stack.trim().match(/\n( *(at )?)/); + prefix = match && match[1] || ''; } + } // We use the prefix to ensure our stacks line up with native stack frames. - { - var frame = componentFrameCache.get(fn); - if (frame !== undefined) { - return frame; - } - } + return '\n' + prefix + name; + } else { + return describeComponentFrame(name); + } +} +var reentry = false; +var componentFrameCache; - reentry = true; - var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. +{ + var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; + componentFrameCache = new PossiblyWeakMap(); +} +/** + * Leverages native browser/VM stack frames to get proper details (e.g. + * filename, line + col number) for a single component in a component stack. We + * do this by: + * (1) throwing and catching an error in the function - this will be our + * control error. + * (2) calling the component which will eventually throw an error that we'll + * catch - this will be our sample error. + * (3) diffing the control and sample error stacks to find the stack frame + * which represents our component. + */ - Error.prepareStackTrace = undefined; - var previousDispatcher = null; - { - previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function - // for warnings. +function describeNativeComponentFrame(fn, construct) { + // If something asked for a stack inside a fake render, it should get ignored. + if (!fn || reentry) { + return ''; + } - ReactSharedInternals.H = null; - disableLogs(); - } - /** - * Finding a common stack frame between sample and control errors can be - * tricky given the different types and levels of stack trace truncation from - * different JS VMs. So instead we'll attempt to control what that common - * frame should be through this object method: - * Having both the sample and control errors be in the function under the - * `DescribeNativeComponentFrameRoot` property, + setting the `name` and - * `displayName` properties of the function ensures that a stack - * frame exists that has the method name `DescribeNativeComponentFrameRoot` in - * it for both control and sample stacks. - */ - - var RunInRootFrame = { - DetermineComponentFrameRoot: function () { - var control; + { + var frame = componentFrameCache.get(fn); - try { - // This should throw. - if (construct) { - // Something should be setting the props in the constructor. - var Fake = function () { - throw Error(); - }; // $FlowFixMe[prop-missing] - - Object.defineProperty(Fake.prototype, "props", { - set: function () { - // We use a throwing setter instead of frozen or non-writable props - // because that won't throw in a non-strict mode function. - throw Error(); - } - }); - - if (typeof Reflect === "object" && Reflect.construct) { - // We construct a different control for this case to include any extra - // frames added by the construct call. - try { - Reflect.construct(Fake, []); - } catch (x) { - control = x; - } + if (frame !== undefined) { + return frame; + } + } + + reentry = true; + var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. + + Error.prepareStackTrace = undefined; + var previousDispatcher = null; + + { + previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function + // for warnings. + + ReactSharedInternals.H = null; + disableLogs(); + } + /** + * Finding a common stack frame between sample and control errors can be + * tricky given the different types and levels of stack trace truncation from + * different JS VMs. So instead we'll attempt to control what that common + * frame should be through this object method: + * Having both the sample and control errors be in the function under the + * `DescribeNativeComponentFrameRoot` property, + setting the `name` and + * `displayName` properties of the function ensures that a stack + * frame exists that has the method name `DescribeNativeComponentFrameRoot` in + * it for both control and sample stacks. + */ + + + var RunInRootFrame = { + DetermineComponentFrameRoot: function () { + var control; - Reflect.construct(fn, [], Fake); - } else { - try { - Fake.call(); - } catch (x) { - control = x; - } // $FlowFixMe[prop-missing] found when upgrading Flow + try { + // This should throw. + if (construct) { + // Something should be setting the props in the constructor. + var Fake = function () { + throw Error(); + }; // $FlowFixMe[prop-missing] - fn.call(Fake.prototype); - } - } else { - try { - throw Error(); - } catch (x) { - control = x; - } // TODO(luna): This will currently only throw if the function component - // tries to access React/ReactDOM/props. We should probably make this throw - // in simple components too - - var maybePromise = fn(); // If the function component returns a promise, it's likely an async - // component, which we don't yet support. Attach a noop catch handler to - // silence the error. - // TODO: Implement component stacks for async client components? - - if (maybePromise && typeof maybePromise.catch === "function") { - maybePromise.catch(function () {}); - } + + Object.defineProperty(Fake.prototype, 'props', { + set: function () { + // We use a throwing setter instead of frozen or non-writable props + // because that won't throw in a non-strict mode function. + throw Error(); } - } catch (sample) { - // This is inlined manually because closure doesn't do it for us. - if (sample && control && typeof sample.stack === "string") { - return [sample.stack, control.stack]; + }); + + if (typeof Reflect === 'object' && Reflect.construct) { + // We construct a different control for this case to include any extra + // frames added by the construct call. + try { + Reflect.construct(Fake, []); + } catch (x) { + control = x; } - } - return [null, null]; - } - }; // $FlowFixMe[prop-missing] - - RunInRootFrame.DetermineComponentFrameRoot.displayName = - "DetermineComponentFrameRoot"; - var namePropDescriptor = Object.getOwnPropertyDescriptor( - RunInRootFrame.DetermineComponentFrameRoot, - "name" - ); // Before ES6, the `name` property was not configurable. - - if (namePropDescriptor && namePropDescriptor.configurable) { - // V8 utilizes a function's `name` property when generating a stack trace. - Object.defineProperty( - RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor - // is set to `false`. - // $FlowFixMe[cannot-write] - "name", - { - value: "DetermineComponentFrameRoot" - } - ); - } + Reflect.construct(fn, [], Fake); + } else { + try { + Fake.call(); + } catch (x) { + control = x; + } // $FlowFixMe[prop-missing] found when upgrading Flow - try { - var _RunInRootFrame$Deter = - RunInRootFrame.DetermineComponentFrameRoot(), - sampleStack = _RunInRootFrame$Deter[0], - controlStack = _RunInRootFrame$Deter[1]; - - if (sampleStack && controlStack) { - // This extracts the first frame from the sample that isn't also in the control. - // Skipping one frame that we assume is the frame that calls the two. - var sampleLines = sampleStack.split("\n"); - var controlLines = controlStack.split("\n"); - var s = 0; - var c = 0; - - while ( - s < sampleLines.length && - !sampleLines[s].includes("DetermineComponentFrameRoot") - ) { - s++; - } - while ( - c < controlLines.length && - !controlLines[c].includes("DetermineComponentFrameRoot") - ) { - c++; - } // We couldn't find our intentionally injected common root frame, attempt - // to find another common root frame by search from the bottom of the - // control stack... - - if (s === sampleLines.length || c === controlLines.length) { - s = sampleLines.length - 1; - c = controlLines.length - 1; - - while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { - // We expect at least one stack frame to be shared. - // Typically this will be the root most one. However, stack frames may be - // cut off due to maximum stack limits. In this case, one maybe cut off - // earlier than the other. We assume that the sample is longer or the same - // and there for cut off earlier. So we should find the root most frame in - // the sample somewhere in the control. - c--; - } + fn.call(Fake.prototype); } + } else { + try { + throw Error(); + } catch (x) { + control = x; + } // TODO(luna): This will currently only throw if the function component + // tries to access React/ReactDOM/props. We should probably make this throw + // in simple components too - for (; s >= 1 && c >= 0; s--, c--) { - // Next we find the first one that isn't the same which should be the - // frame that called our sample function and the control. - if (sampleLines[s] !== controlLines[c]) { - // In V8, the first line is describing the message but other VMs don't. - // If we're about to return the first line, and the control is also on the same - // line, that's a pretty good indicator that our sample threw at same line as - // the control. I.e. before we entered the sample frame. So we ignore this result. - // This can happen if you passed a class to function component, or non-function. - if (s !== 1 || c !== 1) { - do { - s--; - c--; // We may still have similar intermediate frames from the construct call. - // The next one that isn't the same should be our match though. - - if (c < 0 || sampleLines[s] !== controlLines[c]) { - // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. - var _frame = - "\n" + sampleLines[s].replace(" at new ", " at "); // If our component frame is labeled "" - // but we have a user-provided "displayName" - // splice it in to make the stack more readable. - - if (fn.displayName && _frame.includes("")) { - _frame = _frame.replace("", fn.displayName); - } - - if (true) { - if (typeof fn === "function") { - componentFrameCache.set(fn, _frame); - } - } // Return the line we found. - - return _frame; - } - } while (s >= 1 && c >= 0); - } - break; - } + var maybePromise = fn(); // If the function component returns a promise, it's likely an async + // component, which we don't yet support. Attach a noop catch handler to + // silence the error. + // TODO: Implement component stacks for async client components? + + if (maybePromise && typeof maybePromise.catch === 'function') { + maybePromise.catch(function () {}); } } - } finally { - reentry = false; + } catch (sample) { + // This is inlined manually because closure doesn't do it for us. + if (sample && control && typeof sample.stack === 'string') { + return [sample.stack, control.stack]; + } + } - { - ReactSharedInternals.H = previousDispatcher; - reenableLogs(); + return [null, null]; + } + }; // $FlowFixMe[prop-missing] + + RunInRootFrame.DetermineComponentFrameRoot.displayName = 'DetermineComponentFrameRoot'; + var namePropDescriptor = Object.getOwnPropertyDescriptor(RunInRootFrame.DetermineComponentFrameRoot, 'name'); // Before ES6, the `name` property was not configurable. + + if (namePropDescriptor && namePropDescriptor.configurable) { + // V8 utilizes a function's `name` property when generating a stack trace. + Object.defineProperty(RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor + // is set to `false`. + // $FlowFixMe[cannot-write] + 'name', { + value: 'DetermineComponentFrameRoot' + }); + } + + try { + var _RunInRootFrame$Deter = RunInRootFrame.DetermineComponentFrameRoot(), + sampleStack = _RunInRootFrame$Deter[0], + controlStack = _RunInRootFrame$Deter[1]; + + if (sampleStack && controlStack) { + // This extracts the first frame from the sample that isn't also in the control. + // Skipping one frame that we assume is the frame that calls the two. + var sampleLines = sampleStack.split('\n'); + var controlLines = controlStack.split('\n'); + var s = 0; + var c = 0; + + while (s < sampleLines.length && !sampleLines[s].includes('DetermineComponentFrameRoot')) { + s++; + } + + while (c < controlLines.length && !controlLines[c].includes('DetermineComponentFrameRoot')) { + c++; + } // We couldn't find our intentionally injected common root frame, attempt + // to find another common root frame by search from the bottom of the + // control stack... + + + if (s === sampleLines.length || c === controlLines.length) { + s = sampleLines.length - 1; + c = controlLines.length - 1; + + while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { + // We expect at least one stack frame to be shared. + // Typically this will be the root most one. However, stack frames may be + // cut off due to maximum stack limits. In this case, one maybe cut off + // earlier than the other. We assume that the sample is longer or the same + // and there for cut off earlier. So we should find the root most frame in + // the sample somewhere in the control. + c--; } + } - Error.prepareStackTrace = previousPrepareStackTrace; - } // Fallback to just using the name if we couldn't make it throw. + for (; s >= 1 && c >= 0; s--, c--) { + // Next we find the first one that isn't the same which should be the + // frame that called our sample function and the control. + if (sampleLines[s] !== controlLines[c]) { + // In V8, the first line is describing the message but other VMs don't. + // If we're about to return the first line, and the control is also on the same + // line, that's a pretty good indicator that our sample threw at same line as + // the control. I.e. before we entered the sample frame. So we ignore this result. + // This can happen if you passed a class to function component, or non-function. + if (s !== 1 || c !== 1) { + do { + s--; + c--; // We may still have similar intermediate frames from the construct call. + // The next one that isn't the same should be our match though. + + if (c < 0 || sampleLines[s] !== controlLines[c]) { + // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. + var _frame = '\n' + sampleLines[s].replace(' at new ', ' at '); // If our component frame is labeled "" + // but we have a user-provided "displayName" + // splice it in to make the stack more readable. + + + if (fn.displayName && _frame.includes('')) { + _frame = _frame.replace('', fn.displayName); + } - var name = fn ? fn.displayName || fn.name : ""; - var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ""; + if (true) { + if (typeof fn === 'function') { + componentFrameCache.set(fn, _frame); + } + } // Return the line we found. - { - if (typeof fn === "function") { - componentFrameCache.set(fn, syntheticFrame); + + return _frame; + } + } while (s >= 1 && c >= 0); + } + + break; } } + } + } finally { + reentry = false; - return syntheticFrame; + { + ReactSharedInternals.H = previousDispatcher; + reenableLogs(); } - function describeComponentFrame(name) { - return "\n in " + (name || "Unknown"); + Error.prepareStackTrace = previousPrepareStackTrace; + } // Fallback to just using the name if we couldn't make it throw. + + + var name = fn ? fn.displayName || fn.name : ''; + var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ''; + + { + if (typeof fn === 'function') { + componentFrameCache.set(fn, syntheticFrame); } - function describeFunctionComponentFrame(fn) { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(fn, false); - } else { - if (!fn) { - return ""; - } + } - var name = fn.displayName || fn.name || null; - return describeComponentFrame(name); - } + return syntheticFrame; +} + +function describeComponentFrame(name) { + return '\n in ' + (name || 'Unknown'); +} +function describeFunctionComponentFrame(fn) { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(fn, false); + } else { + if (!fn) { + return ''; } - function shouldConstruct(Component) { - var prototype = Component.prototype; - return !!(prototype && prototype.isReactComponent); + var name = fn.displayName || fn.name || null; + return describeComponentFrame(name); + } +} + +function shouldConstruct(Component) { + var prototype = Component.prototype; + return !!(prototype && prototype.isReactComponent); +} + +function describeUnknownElementTypeFrameInDEV(type) { + + if (type == null) { + return ''; + } + + if (typeof type === 'function') { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(type, shouldConstruct(type)); + } else { + return describeFunctionComponentFrame(type); } + } - function describeUnknownElementTypeFrameInDEV(type) { - if (type == null) { - return ""; - } + if (typeof type === 'string') { + return describeBuiltInComponentFrame(type); + } - if (typeof type === "function") { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(type, shouldConstruct(type)); - } else { - return describeFunctionComponentFrame(type); + switch (type) { + case REACT_SUSPENSE_TYPE: + return describeBuiltInComponentFrame('Suspense'); + + case REACT_SUSPENSE_LIST_TYPE: + return describeBuiltInComponentFrame('SuspenseList'); + } + + if (typeof type === 'object') { + switch (type.$$typeof) { + case REACT_FORWARD_REF_TYPE: + return describeFunctionComponentFrame(type.render); + + case REACT_MEMO_TYPE: + // Memo may contain any component type so we recursively resolve it. + return describeUnknownElementTypeFrameInDEV(type.type); + + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; + + try { + // Lazy may contain any component type so we recursively resolve it. + return describeUnknownElementTypeFrameInDEV(init(payload)); + } catch (x) {} } + } + } + + return ''; +} + +var FunctionComponent = 0; +var ClassComponent = 1; +var HostRoot = 3; // Root of a host tree. Could be nested inside another node. + +var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. + +var HostComponent = 5; +var HostText = 6; +var Fragment = 7; +var Mode = 8; +var ContextConsumer = 9; +var ContextProvider = 10; +var ForwardRef = 11; +var Profiler = 12; +var SuspenseComponent = 13; +var MemoComponent = 14; +var SimpleMemoComponent = 15; +var LazyComponent = 16; +var IncompleteClassComponent = 17; +var DehydratedFragment = 18; +var SuspenseListComponent = 19; +var ScopeComponent = 21; +var OffscreenComponent = 22; +var CacheComponent = 24; +var TracingMarkerComponent = 25; +var HostHoistable = 26; +var HostSingleton = 27; +var IncompleteFunctionComponent = 28; + +function getWrappedName(outerType, innerType, wrapperName) { + var functionName = innerType.displayName || innerType.name || ''; + return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName); +} // Keep in sync with shared/getComponentNameFromType + + +function getContextName(type) { + return type.displayName || 'Context'; +} +function getComponentNameFromFiber(fiber) { + var tag = fiber.tag, + type = fiber.type; + + switch (tag) { + case CacheComponent: + return 'Cache'; + + case ContextConsumer: + if (enableRenderableContext) { + var consumer = type; + return getContextName(consumer._context) + '.Consumer'; + } else { + var context = type; + return getContextName(context) + '.Consumer'; } - if (typeof type === "string") { - return describeBuiltInComponentFrame(type); + case ContextProvider: + if (enableRenderableContext) { + var _context = type; + return getContextName(_context) + '.Provider'; + } else { + var provider = type; + return getContextName(provider._context) + '.Provider'; } - switch (type) { - case REACT_SUSPENSE_TYPE: - return describeBuiltInComponentFrame("Suspense"); + case DehydratedFragment: + return 'DehydratedFragment'; - case REACT_SUSPENSE_LIST_TYPE: - return describeBuiltInComponentFrame("SuspenseList"); - } + case ForwardRef: + return getWrappedName(type, type.render, 'ForwardRef'); - if (typeof type === "object") { - switch (type.$$typeof) { - case REACT_FORWARD_REF_TYPE: - return describeFunctionComponentFrame(type.render); + case Fragment: + return 'Fragment'; - case REACT_MEMO_TYPE: - // Memo may contain any component type so we recursively resolve it. - return describeUnknownElementTypeFrameInDEV(type.type); + case HostHoistable: + case HostSingleton: + case HostComponent: + // Host component type is the display name (e.g. "div", "View") + return type; - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; + case HostPortal: + return 'Portal'; - try { - // Lazy may contain any component type so we recursively resolve it. - return describeUnknownElementTypeFrameInDEV(init(payload)); - } catch (x) {} - } - } - } + case HostRoot: + return 'Root'; - return ""; - } + case HostText: + return 'Text'; - var FunctionComponent = 0; - var ClassComponent = 1; - var HostRoot = 3; // Root of a host tree. Could be nested inside another node. - - var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. - - var HostComponent = 5; - var HostText = 6; - var Fragment = 7; - var Mode = 8; - var ContextConsumer = 9; - var ContextProvider = 10; - var ForwardRef = 11; - var Profiler = 12; - var SuspenseComponent = 13; - var MemoComponent = 14; - var SimpleMemoComponent = 15; - var LazyComponent = 16; - var IncompleteClassComponent = 17; - var DehydratedFragment = 18; - var SuspenseListComponent = 19; - var ScopeComponent = 21; - var OffscreenComponent = 22; - var CacheComponent = 24; - var TracingMarkerComponent = 25; - var HostHoistable = 26; - var HostSingleton = 27; - var IncompleteFunctionComponent = 28; - - function getWrappedName(outerType, innerType, wrapperName) { - var functionName = innerType.displayName || innerType.name || ""; - return ( - outerType.displayName || - (functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName) - ); - } // Keep in sync with shared/getComponentNameFromType - - function getContextName(type) { - return type.displayName || "Context"; - } - function getComponentNameFromFiber(fiber) { - var tag = fiber.tag, - type = fiber.type; - - switch (tag) { - case CacheComponent: - return "Cache"; - - case ContextConsumer: - if (enableRenderableContext) { - var consumer = type; - return getContextName(consumer._context) + ".Consumer"; - } else { - var context = type; - return getContextName(context) + ".Consumer"; - } + case LazyComponent: + // Name comes from the type in this case; we don't have a tag. + return getComponentNameFromType(type); - case ContextProvider: - if (enableRenderableContext) { - var _context = type; - return getContextName(_context) + ".Provider"; - } else { - var provider = type; - return getContextName(provider._context) + ".Provider"; - } + case Mode: + if (type === REACT_STRICT_MODE_TYPE) { + // Don't be less specific than shared/getComponentNameFromType + return 'StrictMode'; + } - case DehydratedFragment: - return "DehydratedFragment"; + return 'Mode'; - case ForwardRef: - return getWrappedName(type, type.render, "ForwardRef"); + case OffscreenComponent: + return 'Offscreen'; - case Fragment: - return "Fragment"; + case Profiler: + return 'Profiler'; - case HostHoistable: - case HostSingleton: - case HostComponent: - // Host component type is the display name (e.g. "div", "View") - return type; + case ScopeComponent: + return 'Scope'; - case HostPortal: - return "Portal"; + case SuspenseComponent: + return 'Suspense'; - case HostRoot: - return "Root"; + case SuspenseListComponent: + return 'SuspenseList'; - case HostText: - return "Text"; + case TracingMarkerComponent: + return 'TracingMarker'; + // The display name for these tags come from the user-provided type: - case LazyComponent: - // Name comes from the type in this case; we don't have a tag. - return getComponentNameFromType(type); + case IncompleteClassComponent: + case IncompleteFunctionComponent: - case Mode: - if (type === REACT_STRICT_MODE_TYPE) { - // Don't be less specific than shared/getComponentNameFromType - return "StrictMode"; - } + // Fallthrough - return "Mode"; + case ClassComponent: + case FunctionComponent: + case MemoComponent: + case SimpleMemoComponent: + if (typeof type === 'function') { + return type.displayName || type.name || null; + } - case OffscreenComponent: - return "Offscreen"; + if (typeof type === 'string') { + return type; + } - case Profiler: - return "Profiler"; + break; - case ScopeComponent: - return "Scope"; + } - case SuspenseComponent: - return "Suspense"; + return null; +} - case SuspenseListComponent: - return "SuspenseList"; +var REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference'); +var specialPropKeyWarningShown; +var specialPropRefWarningShown; +var didWarnAboutStringRefs; - case TracingMarkerComponent: - return "TracingMarker"; - // The display name for these tags come from the user-provided type: +{ + didWarnAboutStringRefs = {}; +} - case IncompleteClassComponent: - case IncompleteFunctionComponent: +function hasValidRef(config) { + { + if (hasOwnProperty.call(config, 'ref')) { + var getter = Object.getOwnPropertyDescriptor(config, 'ref').get; - // Fallthrough + if (getter && getter.isReactWarning) { + return false; + } + } + } - case ClassComponent: - case FunctionComponent: - case MemoComponent: - case SimpleMemoComponent: - if (typeof type === "function") { - return type.displayName || type.name || null; - } + return config.ref !== undefined; +} - if (typeof type === "string") { - return type; - } +function hasValidKey(config) { + { + if (hasOwnProperty.call(config, 'key')) { + var getter = Object.getOwnPropertyDescriptor(config, 'key').get; - break; + if (getter && getter.isReactWarning) { + return false; } - - return null; } + } - var REACT_CLIENT_REFERENCE = Symbol.for("react.client.reference"); - var specialPropKeyWarningShown; - var specialPropRefWarningShown; - var didWarnAboutStringRefs; + return config.key !== undefined; +} - { - didWarnAboutStringRefs = {}; - } +function warnIfStringRefCannotBeAutoConverted(config, self) { + { + if (typeof config.ref === 'string' && ReactSharedInternals.owner && self && ReactSharedInternals.owner.stateNode !== self) { + var componentName = getComponentNameFromType(ReactSharedInternals.owner.type); - function hasValidRef(config) { - { - if (hasOwnProperty.call(config, "ref")) { - var getter = Object.getOwnPropertyDescriptor(config, "ref").get; + if (!didWarnAboutStringRefs[componentName]) { + error('Component "%s" contains the string ref "%s". ' + 'Support for string refs will be removed in a future major release. ' + 'This case cannot be automatically converted to an arrow function. ' + 'We ask you to manually fix this case by using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref', getComponentNameFromType(ReactSharedInternals.owner.type), config.ref); - if (getter && getter.isReactWarning) { - return false; - } - } + didWarnAboutStringRefs[componentName] = true; } - - return config.ref !== undefined; } + } +} - function hasValidKey(config) { - { - if (hasOwnProperty.call(config, "key")) { - var getter = Object.getOwnPropertyDescriptor(config, "key").get; +function defineKeyPropWarningGetter(props, displayName) { + { + var warnAboutAccessingKey = function () { + if (!specialPropKeyWarningShown) { + specialPropKeyWarningShown = true; - if (getter && getter.isReactWarning) { - return false; - } - } + error('%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://react.dev/link/special-props)', displayName); } + }; + + warnAboutAccessingKey.isReactWarning = true; + Object.defineProperty(props, 'key', { + get: warnAboutAccessingKey, + configurable: true + }); + } +} - return config.key !== undefined; - } +function defineRefPropWarningGetter(props, displayName) { + { + { + var warnAboutAccessingRef = function () { + if (!specialPropRefWarningShown) { + specialPropRefWarningShown = true; - function warnIfStringRefCannotBeAutoConverted(config, self) { - { - if ( - typeof config.ref === "string" && - ReactSharedInternals.owner && - self && - ReactSharedInternals.owner.stateNode !== self - ) { - var componentName = getComponentNameFromType( - ReactSharedInternals.owner.type - ); - - if (!didWarnAboutStringRefs[componentName]) { - error( - 'Component "%s" contains the string ref "%s". ' + - "Support for string refs will be removed in a future major release. " + - "This case cannot be automatically converted to an arrow function. " + - "We ask you to manually fix this case by using useRef() or createRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref", - getComponentNameFromType(ReactSharedInternals.owner.type), - config.ref - ); - - didWarnAboutStringRefs[componentName] = true; - } + error('%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://react.dev/link/special-props)', displayName); } - } + }; + + warnAboutAccessingRef.isReactWarning = true; + Object.defineProperty(props, 'ref', { + get: warnAboutAccessingRef, + configurable: true + }); } + } +} +/** + * Factory method to create a new React element. This no longer adheres to + * the class pattern, so do not use new to call it. Also, instanceof check + * will not work. Instead test $$typeof field against Symbol.for('react.element') to check + * if something is a React Element. + * + * @param {*} type + * @param {*} props + * @param {*} key + * @param {string|object} ref + * @param {*} owner + * @param {*} self A *temporary* helper to detect places where `this` is + * different from the `owner` when React.createElement is called, so that we + * can warn. We want to get rid of owner and replace string `ref`s with arrow + * functions, and as long as `this` and owner are the same, there will be no + * change in behavior. + * @param {*} source An annotation object (added by a transpiler or otherwise) + * indicating filename, line number, and/or other information. + * @internal + */ - function defineKeyPropWarningGetter(props, displayName) { - { - var warnAboutAccessingKey = function () { - if (!specialPropKeyWarningShown) { - specialPropKeyWarningShown = true; - - error( - "%s: `key` is not a prop. Trying to access it will result " + - "in `undefined` being returned. If you need to access the same " + - "value within the child component, you should pass it as a different " + - "prop. (https://react.dev/link/special-props)", - displayName - ); - } - }; - warnAboutAccessingKey.isReactWarning = true; - Object.defineProperty(props, "key", { - get: warnAboutAccessingKey, - configurable: true - }); - } +function ReactElement(type, key, _ref, self, source, owner, props) { + var ref; + + { + ref = _ref; + } + + var element; + + { + // In prod, `ref` is a regular property. It will be removed in a + // future release. + element = { + // This tag allows us to uniquely identify this as a React Element + $$typeof: REACT_ELEMENT_TYPE, + // Built-in properties that belong on the element + type: type, + key: key, + ref: ref, + props: props, + // Record the component responsible for creating this element. + _owner: owner + }; + } + + { + // The validation flag is currently mutative. We put it on + // an external backing store so that we can freeze the whole object. + // This can be replaced with a WeakMap once they are implemented in + // commonly used development environments. + element._store = {}; // To make comparing ReactElements easier for testing purposes, we make + // the validation flag non-enumerable (where possible, which should + // include every environment we run tests in), so the test framework + // ignores it. + + Object.defineProperty(element._store, 'validated', { + configurable: false, + enumerable: false, + writable: true, + value: false + }); // debugInfo contains Server Component debug information. + + Object.defineProperty(element, '_debugInfo', { + configurable: false, + enumerable: false, + writable: true, + value: null + }); + + if (Object.freeze) { + Object.freeze(element.props); + Object.freeze(element); } + } - function defineRefPropWarningGetter(props, displayName) { - { - { - var warnAboutAccessingRef = function () { - if (!specialPropRefWarningShown) { - specialPropRefWarningShown = true; - - error( - "%s: `ref` is not a prop. Trying to access it will result " + - "in `undefined` being returned. If you need to access the same " + - "value within the child component, you should pass it as a different " + - "prop. (https://react.dev/link/special-props)", - displayName - ); - } - }; + return element; +} +var didWarnAboutKeySpread = {}; +/** + * https://github.com/reactjs/rfcs/pull/107 + * @param {*} type + * @param {object} props + * @param {string} key + */ - warnAboutAccessingRef.isReactWarning = true; - Object.defineProperty(props, "ref", { - get: warnAboutAccessingRef, - configurable: true - }); - } - } - } - /** - * Factory method to create a new React element. This no longer adheres to - * the class pattern, so do not use new to call it. Also, instanceof check - * will not work. Instead test $$typeof field against Symbol.for('react.element') to check - * if something is a React Element. - * - * @param {*} type - * @param {*} props - * @param {*} key - * @param {string|object} ref - * @param {*} owner - * @param {*} self A *temporary* helper to detect places where `this` is - * different from the `owner` when React.createElement is called, so that we - * can warn. We want to get rid of owner and replace string `ref`s with arrow - * functions, and as long as `this` and owner are the same, there will be no - * change in behavior. - * @param {*} source An annotation object (added by a transpiler or otherwise) - * indicating filename, line number, and/or other information. - * @internal - */ - - function ReactElement(type, key, _ref, self, source, owner, props) { - var ref; +function jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self) { + { + if (!isValidElementType(type)) { + // This is an invalid element type. + // + // We warn in this case but don't throw. We expect the element creation to + // succeed and there will likely be errors in render. + var info = ''; - { - ref = _ref; + if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) { + info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports."; } - var element; + var typeString; - { - // In prod, `ref` is a regular property. It will be removed in a - // future release. - element = { - // This tag allows us to uniquely identify this as a React Element - $$typeof: REACT_ELEMENT_TYPE, - // Built-in properties that belong on the element - type: type, - key: key, - ref: ref, - props: props, - // Record the component responsible for creating this element. - _owner: owner - }; + if (type === null) { + typeString = 'null'; + } else if (isArray(type)) { + typeString = 'array'; + } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) { + typeString = "<" + (getComponentNameFromType(type.type) || 'Unknown') + " />"; + info = ' Did you accidentally export a JSX literal instead of a component?'; + } else { + typeString = typeof type; } - { - // The validation flag is currently mutative. We put it on - // an external backing store so that we can freeze the whole object. - // This can be replaced with a WeakMap once they are implemented in - // commonly used development environments. - element._store = {}; // To make comparing ReactElements easier for testing purposes, we make - // the validation flag non-enumerable (where possible, which should - // include every environment we run tests in), so the test framework - // ignores it. - - Object.defineProperty(element._store, "validated", { - configurable: false, - enumerable: false, - writable: true, - value: false - }); // debugInfo contains Server Component debug information. - - Object.defineProperty(element, "_debugInfo", { - configurable: false, - enumerable: false, - writable: true, - value: null - }); - - if (Object.freeze) { - Object.freeze(element.props); - Object.freeze(element); + error('React.jsx: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info); + } else { + // This is a valid element type. + // Skip key warning if the type isn't valid since our key validation logic + // doesn't expect a non-string/function type and can throw confusing + // errors. We don't want exception behavior to differ between dev and + // prod. (Rendering will throw with a helpful message and as soon as the + // type is fixed, the key warnings will appear.) + var children = config.children; + + if (children !== undefined) { + if (isStaticChildren) { + if (isArray(children)) { + for (var i = 0; i < children.length; i++) { + validateChildKeys(children[i], type); + } + + if (Object.freeze) { + Object.freeze(children); + } + } else { + error('React.jsx: Static children should always be an array. ' + 'You are likely explicitly calling React.jsxs or React.jsxDEV. ' + 'Use the Babel transform instead.'); + } + } else { + validateChildKeys(children, type); } } + } // Warn about key spread regardless of whether the type is valid. - return element; - } - var didWarnAboutKeySpread = {}; - /** - * https://github.com/reactjs/rfcs/pull/107 - * @param {*} type - * @param {object} props - * @param {string} key - */ - - function jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self) { - { - if (!isValidElementType(type)) { - // This is an invalid element type. - // - // We warn in this case but don't throw. We expect the element creation to - // succeed and there will likely be errors in render. - var info = ""; - - if ( - type === undefined || - (typeof type === "object" && - type !== null && - Object.keys(type).length === 0) - ) { - info += - " You likely forgot to export your component from the file " + - "it's defined in, or you might have mixed up default and named imports."; - } - var typeString; - - if (type === null) { - typeString = "null"; - } else if (isArray(type)) { - typeString = "array"; - } else if ( - type !== undefined && - type.$$typeof === REACT_ELEMENT_TYPE - ) { - typeString = - "<" + (getComponentNameFromType(type.type) || "Unknown") + " />"; - info = - " Did you accidentally export a JSX literal instead of a component?"; - } else { - typeString = typeof type; - } + if (hasOwnProperty.call(config, 'key')) { + var componentName = getComponentNameFromType(type); + var keys = Object.keys(config).filter(function (k) { + return k !== 'key'; + }); + var beforeExample = keys.length > 0 ? '{key: someKey, ' + keys.join(': ..., ') + ': ...}' : '{key: someKey}'; - error( - "React.jsx: type is invalid -- expected a string (for " + - "built-in components) or a class/function (for composite " + - "components) but got: %s.%s", - typeString, - info - ); - } else { - // This is a valid element type. - // Skip key warning if the type isn't valid since our key validation logic - // doesn't expect a non-string/function type and can throw confusing - // errors. We don't want exception behavior to differ between dev and - // prod. (Rendering will throw with a helpful message and as soon as the - // type is fixed, the key warnings will appear.) - var children = config.children; - - if (children !== undefined) { - if (isStaticChildren) { - if (isArray(children)) { - for (var i = 0; i < children.length; i++) { - validateChildKeys(children[i], type); - } + if (!didWarnAboutKeySpread[componentName + beforeExample]) { + var afterExample = keys.length > 0 ? '{' + keys.join(': ..., ') + ': ...}' : '{}'; - if (Object.freeze) { - Object.freeze(children); - } - } else { - error( - "React.jsx: Static children should always be an array. " + - "You are likely explicitly calling React.jsxs or React.jsxDEV. " + - "Use the Babel transform instead." - ); - } - } else { - validateChildKeys(children, type); - } - } - } // Warn about key spread regardless of whether the type is valid. + error('A props object containing a "key" prop is being spread into JSX:\n' + ' let props = %s;\n' + ' <%s {...props} />\n' + 'React keys must be passed directly to JSX without using spread:\n' + ' let props = %s;\n' + ' <%s key={someKey} {...props} />', beforeExample, componentName, afterExample, componentName); - if (hasOwnProperty.call(config, "key")) { - var componentName = getComponentNameFromType(type); - var keys = Object.keys(config).filter(function (k) { - return k !== "key"; - }); - var beforeExample = - keys.length > 0 - ? "{key: someKey, " + keys.join(": ..., ") + ": ...}" - : "{key: someKey}"; - - if (!didWarnAboutKeySpread[componentName + beforeExample]) { - var afterExample = - keys.length > 0 ? "{" + keys.join(": ..., ") + ": ...}" : "{}"; - - error( - 'A props object containing a "key" prop is being spread into JSX:\n' + - " let props = %s;\n" + - " <%s {...props} />\n" + - "React keys must be passed directly to JSX without using spread:\n" + - " let props = %s;\n" + - " <%s key={someKey} {...props} />", - beforeExample, - componentName, - afterExample, - componentName - ); - - didWarnAboutKeySpread[componentName + beforeExample] = true; - } - } + didWarnAboutKeySpread[componentName + beforeExample] = true; + } + } - var key = null; - var ref = null; // Currently, key can be spread in as a prop. This causes a potential - // issue if key is also explicitly declared (ie.
- // or
). We want to deprecate key spread, - // but as an intermediary step, we will use jsxDEV for everything except - //
, because we aren't currently able to tell if - // key is explicitly declared to be undefined or not. + var key = null; + var ref = null; // Currently, key can be spread in as a prop. This causes a potential + // issue if key is also explicitly declared (ie.
+ // or
). We want to deprecate key spread, + // but as an intermediary step, we will use jsxDEV for everything except + //
, because we aren't currently able to tell if + // key is explicitly declared to be undefined or not. - if (maybeKey !== undefined) { - { - checkKeyStringCoercion(maybeKey); - } + if (maybeKey !== undefined) { + { + checkKeyStringCoercion(maybeKey); + } - key = "" + maybeKey; - } + key = '' + maybeKey; + } - if (hasValidKey(config)) { - { - checkKeyStringCoercion(config.key); - } + if (hasValidKey(config)) { + { + checkKeyStringCoercion(config.key); + } + + key = '' + config.key; + } + + if (hasValidRef(config)) { + { + ref = config.ref; - key = "" + config.key; + { + ref = coerceStringRef(ref, ReactSharedInternals.owner, type); } + } - if (hasValidRef(config)) { - { - ref = config.ref; + { + warnIfStringRefCannotBeAutoConverted(config, self); + } + } - { - ref = coerceStringRef(ref, ReactSharedInternals.owner, type); - } - } + var props; + { + // We need to remove reserved props (key, prop, ref). Create a fresh props + // object and copy over all the non-reserved props. We don't use `delete` + // because in V8 it will deopt the object to dictionary mode. + props = {}; + + for (var propName in config) { + // Skip over reserved prop names + if (propName !== 'key' && (propName !== 'ref')) { { - warnIfStringRefCannotBeAutoConverted(config, self); + props[propName] = config[propName]; } } + } + } - var props; + if (!disableDefaultPropsExceptForClasses) { + // Resolve default props + if (type && type.defaultProps) { + var defaultProps = type.defaultProps; - { - // We need to remove reserved props (key, prop, ref). Create a fresh props - // object and copy over all the non-reserved props. We don't use `delete` - // because in V8 it will deopt the object to dictionary mode. - props = {}; - - for (var propName in config) { - // Skip over reserved prop names - if (propName !== "key" && propName !== "ref") { - { - props[propName] = config[propName]; - } - } + for (var _propName2 in defaultProps) { + if (props[_propName2] === undefined) { + props[_propName2] = defaultProps[_propName2]; } } + } + } - if (!disableDefaultPropsExceptForClasses) { - // Resolve default props - if (type && type.defaultProps) { - var defaultProps = type.defaultProps; + if (key || ref) { + var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type; - for (var _propName2 in defaultProps) { - if (props[_propName2] === undefined) { - props[_propName2] = defaultProps[_propName2]; - } - } - } - } + if (key) { + defineKeyPropWarningGetter(props, displayName); + } - if (key || ref) { - var displayName = - typeof type === "function" - ? type.displayName || type.name || "Unknown" - : type; + if (ref) { + defineRefPropWarningGetter(props, displayName); + } + } - if (key) { - defineKeyPropWarningGetter(props, displayName); - } + var element = ReactElement(type, key, ref, self, source, ReactSharedInternals.owner, props); - if (ref) { - defineRefPropWarningGetter(props, displayName); - } - } + if (type === REACT_FRAGMENT_TYPE) { + validateFragmentProps(element); + } - var element = ReactElement( - type, - key, - ref, - self, - source, - ReactSharedInternals.owner, - props - ); - - if (type === REACT_FRAGMENT_TYPE) { - validateFragmentProps(element); - } + return element; + } +} + +function getDeclarationErrorAddendum() { + { + if (ReactSharedInternals.owner) { + var name = getComponentNameFromType(ReactSharedInternals.owner.type); - return element; + if (name) { + return '\n\nCheck the render method of `' + name + '`.'; } } - function getDeclarationErrorAddendum() { - { - if (ReactSharedInternals.owner) { - var name = getComponentNameFromType(ReactSharedInternals.owner.type); + return ''; + } +} +/** + * Ensure that every element either is passed in a static location, in an + * array with an explicit keys property defined, or in an object literal + * with valid key property. + * + * @internal + * @param {ReactNode} node Statically passed child of any type. + * @param {*} parentType node's parent's type. + */ - if (name) { - return "\n\nCheck the render method of `" + name + "`."; - } - } - return ""; - } +function validateChildKeys(node, parentType) { + { + if (typeof node !== 'object' || !node) { + return; } - /** - * Ensure that every element either is passed in a static location, in an - * array with an explicit keys property defined, or in an object literal - * with valid key property. - * - * @internal - * @param {ReactNode} node Statically passed child of any type. - * @param {*} parentType node's parent's type. - */ - - function validateChildKeys(node, parentType) { - { - if (typeof node !== "object" || !node) { - return; - } - if (node.$$typeof === REACT_CLIENT_REFERENCE); - else if (isArray(node)) { - for (var i = 0; i < node.length; i++) { - var child = node[i]; + if (node.$$typeof === REACT_CLIENT_REFERENCE) ; else if (isArray(node)) { + for (var i = 0; i < node.length; i++) { + var child = node[i]; - if (isValidElement(child)) { - validateExplicitKey(child, parentType); - } - } - } else if (isValidElement(node)) { - // This element was passed in a valid location. - if (node._store) { - node._store.validated = true; - } - } else { - var iteratorFn = getIteratorFn(node); - - if (typeof iteratorFn === "function") { - // Entry iterators used to provide implicit keys, - // but now we print a separate warning for them later. - if (iteratorFn !== node.entries) { - var iterator = iteratorFn.call(node); - var step; - - while (!(step = iterator.next()).done) { - if (isValidElement(step.value)) { - validateExplicitKey(step.value, parentType); - } - } + if (isValidElement(child)) { + validateExplicitKey(child, parentType); + } + } + } else if (isValidElement(node)) { + // This element was passed in a valid location. + if (node._store) { + node._store.validated = true; + } + } else { + var iteratorFn = getIteratorFn(node); + + if (typeof iteratorFn === 'function') { + // Entry iterators used to provide implicit keys, + // but now we print a separate warning for them later. + if (iteratorFn !== node.entries) { + var iterator = iteratorFn.call(node); + var step; + + while (!(step = iterator.next()).done) { + if (isValidElement(step.value)) { + validateExplicitKey(step.value, parentType); } } } } } - /** - * Verifies the object is a ReactElement. - * See https://reactjs.org/docs/react-api.html#isvalidelement - * @param {?object} object - * @return {boolean} True if `object` is a ReactElement. - * @final - */ - - function isValidElement(object) { - return ( - typeof object === "object" && - object !== null && - object.$$typeof === REACT_ELEMENT_TYPE - ); - } - var ownerHasKeyUseWarning = {}; - /** - * Warn if the element doesn't have an explicit key assigned to it. - * This element is in an array. The array could grow and shrink or be - * reordered. All children that haven't already been validated are required to - * have a "key" property assigned to it. Error statuses are cached so a warning - * will only be shown once. - * - * @internal - * @param {ReactElement} element Element that requires a key. - * @param {*} parentType element's parent's type. - */ - - function validateExplicitKey(element, parentType) { - { - if ( - !element._store || - element._store.validated || - element.key != null - ) { - return; - } + } +} +/** + * Verifies the object is a ReactElement. + * See https://reactjs.org/docs/react-api.html#isvalidelement + * @param {?object} object + * @return {boolean} True if `object` is a ReactElement. + * @final + */ - element._store.validated = true; - var currentComponentErrorInfo = - getCurrentComponentErrorInfo(parentType); - if (ownerHasKeyUseWarning[currentComponentErrorInfo]) { - return; - } +function isValidElement(object) { + return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE; +} +var ownerHasKeyUseWarning = {}; +/** + * Warn if the element doesn't have an explicit key assigned to it. + * This element is in an array. The array could grow and shrink or be + * reordered. All children that haven't already been validated are required to + * have a "key" property assigned to it. Error statuses are cached so a warning + * will only be shown once. + * + * @internal + * @param {ReactElement} element Element that requires a key. + * @param {*} parentType element's parent's type. + */ - ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a - // property, it may be the creator of the child that's responsible for - // assigning it a key. +function validateExplicitKey(element, parentType) { + { + if (!element._store || element._store.validated || element.key != null) { + return; + } - var childOwner = ""; + element._store.validated = true; + var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType); - if ( - element && - element._owner != null && - element._owner !== ReactSharedInternals.owner - ) { - var ownerName = null; + if (ownerHasKeyUseWarning[currentComponentErrorInfo]) { + return; + } - if (typeof element._owner.tag === "number") { - ownerName = getComponentNameFromType(element._owner.type); - } else if (typeof element._owner.name === "string") { - ownerName = element._owner.name; - } // Give the component that originally created this child. + ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a + // property, it may be the creator of the child that's responsible for + // assigning it a key. - childOwner = " It was passed a child from " + ownerName + "."; - } + var childOwner = ''; - setCurrentlyValidatingElement(element); + if (element && element._owner != null && element._owner !== ReactSharedInternals.owner) { + var ownerName = null; - error( - 'Each child in a list should have a unique "key" prop.' + - "%s%s See https://react.dev/link/warning-keys for more information.", - currentComponentErrorInfo, - childOwner - ); + if (typeof element._owner.tag === 'number') { + ownerName = getComponentNameFromType(element._owner.type); + } else if (typeof element._owner.name === 'string') { + ownerName = element._owner.name; + } // Give the component that originally created this child. - setCurrentlyValidatingElement(null); - } - } - function setCurrentlyValidatingElement(element) { - { - if (element) { - var stack = describeUnknownElementTypeFrameInDEV(element.type); - ReactSharedInternals.setExtraStackFrame(stack); - } else { - ReactSharedInternals.setExtraStackFrame(null); - } - } + childOwner = " It was passed a child from " + ownerName + "."; } - function getCurrentComponentErrorInfo(parentType) { - { - var info = getDeclarationErrorAddendum(); + setCurrentlyValidatingElement(element); - if (!info) { - var parentName = getComponentNameFromType(parentType); + error('Each child in a list should have a unique "key" prop.' + '%s%s See https://react.dev/link/warning-keys for more information.', currentComponentErrorInfo, childOwner); - if (parentName) { - info = - "\n\nCheck the top-level render call using <" + parentName + ">."; - } - } + setCurrentlyValidatingElement(null); + } +} - return info; - } +function setCurrentlyValidatingElement(element) { + { + if (element) { + var stack = describeUnknownElementTypeFrameInDEV(element.type); + ReactSharedInternals.setExtraStackFrame(stack); + } else { + ReactSharedInternals.setExtraStackFrame(null); } - /** - * Given a fragment, validate that it can only be provided with fragment props - * @param {ReactElement} fragment - */ - - function validateFragmentProps(fragment) { - // TODO: Move this to render phase instead of at element creation. - { - var keys = Object.keys(fragment.props); + } +} - for (var i = 0; i < keys.length; i++) { - var key = keys[i]; +function getCurrentComponentErrorInfo(parentType) { + { + var info = getDeclarationErrorAddendum(); - if (key !== "children" && key !== "key") { - setCurrentlyValidatingElement(fragment); + if (!info) { + var parentName = getComponentNameFromType(parentType); - error( - "Invalid prop `%s` supplied to `React.Fragment`. " + - "React.Fragment can only have `key` and `children` props.", - key - ); + if (parentName) { + info = "\n\nCheck the top-level render call using <" + parentName + ">."; + } + } - setCurrentlyValidatingElement(null); - break; - } - } + return info; + } +} +/** + * Given a fragment, validate that it can only be provided with fragment props + * @param {ReactElement} fragment + */ - if (fragment.ref !== null) { - setCurrentlyValidatingElement(fragment); - error("Invalid attribute `ref` supplied to `React.Fragment`."); +function validateFragmentProps(fragment) { + // TODO: Move this to render phase instead of at element creation. + { + var keys = Object.keys(fragment.props); - setCurrentlyValidatingElement(null); - } - } - } + for (var i = 0; i < keys.length; i++) { + var key = keys[i]; - function coerceStringRef(mixedRef, owner, type) { - var stringRef; + if (key !== 'children' && key !== 'key') { + setCurrentlyValidatingElement(fragment); - if (typeof mixedRef === "string") { - stringRef = mixedRef; - } else { - if (typeof mixedRef === "number" || typeof mixedRef === "boolean") { - { - checkPropStringCoercion(mixedRef, "ref"); - } + error('Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key); - stringRef = "" + mixedRef; - } else { - return mixedRef; - } + setCurrentlyValidatingElement(null); + break; } + } - var callback = stringRefAsCallbackRef.bind(null, stringRef, type, owner); // This is used to check whether two callback refs conceptually represent - // the same string ref, and can therefore be reused by the reconciler. Needed - // for backwards compatibility with old Meta code that relies on string refs - // not being reattached on every render. + if (fragment.ref !== null) { + setCurrentlyValidatingElement(fragment); - callback.__stringRef = stringRef; - callback.__type = type; - callback.__owner = owner; - return callback; + error('Invalid attribute `ref` supplied to `React.Fragment`.'); + + setCurrentlyValidatingElement(null); } + } +} - function stringRefAsCallbackRef(stringRef, type, owner, value) { - if (!owner) { - throw new Error( - "Element ref was specified as a string (" + - stringRef + - ") but no owner was set. This could happen for one of" + - " the following reasons:\n" + - "1. You may be adding a ref to a function component\n" + - "2. You may be adding a ref to a component that was not created inside a component's render method\n" + - "3. You have multiple copies of React loaded\n" + - "See https://react.dev/link/refs-must-have-owner for more information." - ); - } +function coerceStringRef(mixedRef, owner, type) { - if (owner.tag !== ClassComponent) { - throw new Error( - "Function components cannot have string refs. " + - "We recommend using useRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref" - ); - } + var stringRef; + if (typeof mixedRef === 'string') { + stringRef = mixedRef; + } else { + if (typeof mixedRef === 'number' || typeof mixedRef === 'boolean') { { - if ( - // Will already warn with "Function components cannot be given refs" - !(typeof type === "function" && !isReactClass(type)) - ) { - var componentName = getComponentNameFromFiber(owner) || "Component"; - - if (!didWarnAboutStringRefs[componentName]) { - error( - 'Component "%s" contains the string ref "%s". Support for string refs ' + - "will be removed in a future major release. We recommend using " + - "useRef() or createRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref", - componentName, - stringRef - ); - - didWarnAboutStringRefs[componentName] = true; - } - } + checkPropStringCoercion(mixedRef, 'ref'); } - var inst = owner.stateNode; + stringRef = '' + mixedRef; + } else { + return mixedRef; + } + } - if (!inst) { - throw new Error( - "Missing owner for string ref " + - stringRef + - ". This error is likely caused by a " + - "bug in React. Please file an issue." - ); - } + var callback = stringRefAsCallbackRef.bind(null, stringRef, type, owner); // This is used to check whether two callback refs conceptually represent + // the same string ref, and can therefore be reused by the reconciler. Needed + // for backwards compatibility with old Meta code that relies on string refs + // not being reattached on every render. + + callback.__stringRef = stringRef; + callback.__type = type; + callback.__owner = owner; + return callback; +} - var refs = inst.refs; +function stringRefAsCallbackRef(stringRef, type, owner, value) { - if (value === null) { - delete refs[stringRef]; - } else { - refs[stringRef] = value; + if (!owner) { + throw new Error("Element ref was specified as a string (" + stringRef + ") but no owner was set. This could happen for one of" + ' the following reasons:\n' + '1. You may be adding a ref to a function component\n' + "2. You may be adding a ref to a component that was not created inside a component's render method\n" + '3. You have multiple copies of React loaded\n' + 'See https://react.dev/link/refs-must-have-owner for more information.'); + } + + if (owner.tag !== ClassComponent) { + throw new Error('Function components cannot have string refs. ' + 'We recommend using useRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref'); + } + + { + if ( // Will already warn with "Function components cannot be given refs" + !(typeof type === 'function' && !isReactClass(type))) { + var componentName = getComponentNameFromFiber(owner) || 'Component'; + + if (!didWarnAboutStringRefs[componentName]) { + error('Component "%s" contains the string ref "%s". Support for string refs ' + 'will be removed in a future major release. We recommend using ' + 'useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref', componentName, stringRef); + + didWarnAboutStringRefs[componentName] = true; } } + } - function isReactClass(type) { - return type.prototype && type.prototype.isReactComponent; - } + var inst = owner.stateNode; + + if (!inst) { + throw new Error("Missing owner for string ref " + stringRef + ". This error is likely caused by a " + 'bug in React. Please file an issue.'); + } + + var refs = inst.refs; + + if (value === null) { + delete refs[stringRef]; + } else { + refs[stringRef] = value; + } +} + +function isReactClass(type) { + return type.prototype && type.prototype.isReactComponent; +} - var jsxDEV = jsxDEV$1; +var jsxDEV = jsxDEV$1 ; - exports.Fragment = REACT_FRAGMENT_TYPE; - exports.jsxDEV = jsxDEV; +exports.Fragment = REACT_FRAGMENT_TYPE; +exports.jsxDEV = jsxDEV; })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXRuntime-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXRuntime-dev.js index e5b32204fffff..0cc9c98978f82 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXRuntime-dev.js +++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/JSXRuntime-dev.js @@ -7,1725 +7,1542 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<<7b2e78bcb8542591ec0d9c0850e3ca30>> + * @generated SignedSource<<63334719117bc7e81815150b27588000>> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; - - var React = require("react"); - var dynamicFlagsUntyped = require("ReactNativeInternalFeatureFlags"); - - // ATTENTION - // When adding new symbols to this file, - // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' - // The Symbol used to tag the ReactElement-like types. - var REACT_ELEMENT_TYPE = Symbol.for("react.element"); - var REACT_PORTAL_TYPE = Symbol.for("react.portal"); - var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); - var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); - var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); - var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); // TODO: Delete with enableRenderableContext - - var REACT_CONSUMER_TYPE = Symbol.for("react.consumer"); - var REACT_CONTEXT_TYPE = Symbol.for("react.context"); - var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); - var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); - var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); - var REACT_MEMO_TYPE = Symbol.for("react.memo"); - var REACT_LAZY_TYPE = Symbol.for("react.lazy"); - var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); - var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; - var FAUX_ITERATOR_SYMBOL = "@@iterator"; - function getIteratorFn(maybeIterable) { - if (maybeIterable === null || typeof maybeIterable !== "object") { - return null; - } + (function() { +'use strict'; + +var React = require('react'); +var dynamicFlagsUntyped = require('ReactNativeInternalFeatureFlags'); + +// ATTENTION +// When adding new symbols to this file, +// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' +// The Symbol used to tag the ReactElement-like types. +var REACT_ELEMENT_TYPE = Symbol.for('react.element'); +var REACT_PORTAL_TYPE = Symbol.for('react.portal'); +var REACT_FRAGMENT_TYPE = Symbol.for('react.fragment'); +var REACT_STRICT_MODE_TYPE = Symbol.for('react.strict_mode'); +var REACT_PROFILER_TYPE = Symbol.for('react.profiler'); +var REACT_PROVIDER_TYPE = Symbol.for('react.provider'); // TODO: Delete with enableRenderableContext + +var REACT_CONSUMER_TYPE = Symbol.for('react.consumer'); +var REACT_CONTEXT_TYPE = Symbol.for('react.context'); +var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref'); +var REACT_SUSPENSE_TYPE = Symbol.for('react.suspense'); +var REACT_SUSPENSE_LIST_TYPE = Symbol.for('react.suspense_list'); +var REACT_MEMO_TYPE = Symbol.for('react.memo'); +var REACT_LAZY_TYPE = Symbol.for('react.lazy'); +var REACT_OFFSCREEN_TYPE = Symbol.for('react.offscreen'); +var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; +var FAUX_ITERATOR_SYMBOL = '@@iterator'; +function getIteratorFn(maybeIterable) { + if (maybeIterable === null || typeof maybeIterable !== 'object') { + return null; + } + + var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]; + + if (typeof maybeIterator === 'function') { + return maybeIterator; + } + + return null; +} - var maybeIterator = - (MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) || - maybeIterable[FAUX_ITERATOR_SYMBOL]; +var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; - if (typeof maybeIterator === "function") { - return maybeIterator; +function error(format) { + { + { + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + args[_key2 - 1] = arguments[_key2]; } - return null; + printWarning('error', format, args); } + } +} - var ReactSharedInternals = - React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; +function printWarning(level, format, args) { + // When changing this logic, you might want to also + // update consoleWithStackDev.www.js as well. + { + var stack = ReactSharedInternals.getStackAddendum(); - function error(format) { - { - { - for ( - var _len2 = arguments.length, - args = new Array(_len2 > 1 ? _len2 - 1 : 0), - _key2 = 1; - _key2 < _len2; - _key2++ - ) { - args[_key2 - 1] = arguments[_key2]; - } + if (stack !== '') { + format += '%s'; + args = args.concat([stack]); + } // eslint-disable-next-line react-internal/safe-string-coercion - printWarning("error", format, args); - } - } - } - function printWarning(level, format, args) { - // When changing this logic, you might want to also - // update consoleWithStackDev.www.js as well. - { - var stack = ReactSharedInternals.getStackAddendum(); + var argsWithFormat = args.map(function (item) { + return String(item); + }); // Careful: RN currently depends on this prefix - if (stack !== "") { - format += "%s"; - args = args.concat([stack]); - } // eslint-disable-next-line react-internal/safe-string-coercion + argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it + // breaks IE9: https://github.com/facebook/react/issues/13610 + // eslint-disable-next-line react-internal/no-production-logging - var argsWithFormat = args.map(function (item) { - return String(item); - }); // Careful: RN currently depends on this prefix + Function.prototype.apply.call(console[level], console, argsWithFormat); + } +} - argsWithFormat.unshift("Warning: " + format); // We intentionally don't use spread (or .apply) directly because it - // breaks IE9: https://github.com/facebook/react/issues/13610 - // eslint-disable-next-line react-internal/no-production-logging +// Re-export dynamic flags from the internal module. +var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on +// the exports object every time a flag is read. - Function.prototype.apply.call(console[level], console, argsWithFormat); - } - } +var enableComponentStackLocations = dynamicFlags.enableComponentStackLocations, + enableRenderableContext = dynamicFlags.enableRenderableContext, + disableDefaultPropsExceptForClasses = dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. +var enableDebugTracing = false; +var enableScopeAPI = false; +var enableLegacyHidden = false; +var enableTransitionTracing = false; - // Re-export dynamic flags from the internal module. - var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on - // the exports object every time a flag is read. - - var enableComponentStackLocations = - dynamicFlags.enableComponentStackLocations, - enableRenderableContext = dynamicFlags.enableRenderableContext, - disableDefaultPropsExceptForClasses = - dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. - var enableDebugTracing = false; - var enableScopeAPI = false; - var enableLegacyHidden = false; - var enableTransitionTracing = false; - - function getWrappedName$1(outerType, innerType, wrapperName) { - var displayName = outerType.displayName; - - if (displayName) { - return displayName; - } +function getWrappedName$1(outerType, innerType, wrapperName) { + var displayName = outerType.displayName; - var functionName = innerType.displayName || innerType.name || ""; - return functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName; - } // Keep in sync with react-reconciler/getComponentNameFromFiber + if (displayName) { + return displayName; + } - function getContextName$1(type) { - return type.displayName || "Context"; - } + var functionName = innerType.displayName || innerType.name || ''; + return functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName; +} // Keep in sync with react-reconciler/getComponentNameFromFiber - var REACT_CLIENT_REFERENCE$2 = Symbol.for("react.client.reference"); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. - function getComponentNameFromType(type) { - if (type == null) { - // Host root, text node or just invalid type. - return null; - } +function getContextName$1(type) { + return type.displayName || 'Context'; +} - if (typeof type === "function") { - if (type.$$typeof === REACT_CLIENT_REFERENCE$2) { - // TODO: Create a convention for naming client references with debug info. - return null; - } +var REACT_CLIENT_REFERENCE$2 = Symbol.for('react.client.reference'); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. - return type.displayName || type.name || null; - } +function getComponentNameFromType(type) { + if (type == null) { + // Host root, text node or just invalid type. + return null; + } - if (typeof type === "string") { - return type; - } + if (typeof type === 'function') { + if (type.$$typeof === REACT_CLIENT_REFERENCE$2) { + // TODO: Create a convention for naming client references with debug info. + return null; + } - switch (type) { - case REACT_FRAGMENT_TYPE: - return "Fragment"; + return type.displayName || type.name || null; + } - case REACT_PORTAL_TYPE: - return "Portal"; + if (typeof type === 'string') { + return type; + } - case REACT_PROFILER_TYPE: - return "Profiler"; + switch (type) { + case REACT_FRAGMENT_TYPE: + return 'Fragment'; - case REACT_STRICT_MODE_TYPE: - return "StrictMode"; + case REACT_PORTAL_TYPE: + return 'Portal'; - case REACT_SUSPENSE_TYPE: - return "Suspense"; + case REACT_PROFILER_TYPE: + return 'Profiler'; - case REACT_SUSPENSE_LIST_TYPE: - return "SuspenseList"; + case REACT_STRICT_MODE_TYPE: + return 'StrictMode'; + + case REACT_SUSPENSE_TYPE: + return 'Suspense'; + + case REACT_SUSPENSE_LIST_TYPE: + return 'SuspenseList'; + + } + + if (typeof type === 'object') { + { + if (typeof type.tag === 'number') { + error('Received an unexpected object in getComponentNameFromType(). ' + 'This is likely a bug in React. Please file an issue.'); } + } - if (typeof type === "object") { - { - if (typeof type.tag === "number") { - error( - "Received an unexpected object in getComponentNameFromType(). " + - "This is likely a bug in React. Please file an issue." - ); - } + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + if (enableRenderableContext) { + return null; + } else { + var provider = type; + return getContextName$1(provider._context) + '.Provider'; } - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: - if (enableRenderableContext) { - return null; - } else { - var provider = type; - return getContextName$1(provider._context) + ".Provider"; - } + case REACT_CONTEXT_TYPE: + var context = type; - case REACT_CONTEXT_TYPE: - var context = type; - - if (enableRenderableContext) { - return getContextName$1(context) + ".Provider"; - } else { - return getContextName$1(context) + ".Consumer"; - } + if (enableRenderableContext) { + return getContextName$1(context) + '.Provider'; + } else { + return getContextName$1(context) + '.Consumer'; + } - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - var consumer = type; - return getContextName$1(consumer._context) + ".Consumer"; - } else { - return null; - } + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + var consumer = type; + return getContextName$1(consumer._context) + '.Consumer'; + } else { + return null; + } - case REACT_FORWARD_REF_TYPE: - return getWrappedName$1(type, type.render, "ForwardRef"); + case REACT_FORWARD_REF_TYPE: + return getWrappedName$1(type, type.render, 'ForwardRef'); - case REACT_MEMO_TYPE: - var outerName = type.displayName || null; + case REACT_MEMO_TYPE: + var outerName = type.displayName || null; - if (outerName !== null) { - return outerName; - } + if (outerName !== null) { + return outerName; + } - return getComponentNameFromType(type.type) || "Memo"; + return getComponentNameFromType(type.type) || 'Memo'; - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; - try { - return getComponentNameFromType(init(payload)); - } catch (x) { - return null; - } + try { + return getComponentNameFromType(init(payload)); + } catch (x) { + return null; } } - } - - return null; } + } - // $FlowFixMe[method-unbinding] - var hasOwnProperty = Object.prototype.hasOwnProperty; - - var assign = Object.assign; - - /* - * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol - * and Temporal.* types. See https://github.com/facebook/react/pull/22064. - * - * The functions in this module will throw an easier-to-understand, - * easier-to-debug exception with a clear errors message message explaining the - * problem. (Instead of a confusing exception thrown inside the implementation - * of the `value` object). - */ - // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. - function typeName(value) { - { - // toStringTag is needed for namespaced types like Temporal.Instant - var hasToStringTag = typeof Symbol === "function" && Symbol.toStringTag; - var type = - (hasToStringTag && value[Symbol.toStringTag]) || - value.constructor.name || - "Object"; // $FlowFixMe[incompatible-return] + return null; +} - return type; - } - } // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +// $FlowFixMe[method-unbinding] +var hasOwnProperty = Object.prototype.hasOwnProperty; - function willCoercionThrow(value) { - { - try { - testStringCoercion(value); - return false; - } catch (e) { - return true; - } - } - } +var assign = Object.assign; - function testStringCoercion(value) { - // If you ended up here by following an exception call stack, here's what's - // happened: you supplied an object or symbol value to React (as a prop, key, - // DOM attribute, CSS property, string ref, etc.) and when React tried to - // coerce it to a string using `'' + value`, an exception was thrown. - // - // The most common types that will cause this exception are `Symbol` instances - // and Temporal objects like `Temporal.Instant`. But any object that has a - // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this - // exception. (Library authors do this to prevent users from using built-in - // numeric operators like `+` or comparison operators like `>=` because custom - // methods are needed to perform accurate arithmetic or comparison.) - // - // To fix the problem, coerce this object or symbol value to a string before - // passing it to React. The most reliable way is usually `String(value)`. - // - // To find which value is throwing, check the browser or debugger console. - // Before this exception was thrown, there should be `console.error` output - // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the - // problem and how that type was used: key, atrribute, input value prop, etc. - // In most cases, this console output also shows the component and its - // ancestor components where the exception happened. - // - // eslint-disable-next-line react-internal/safe-string-coercion - return "" + value; +/* + * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol + * and Temporal.* types. See https://github.com/facebook/react/pull/22064. + * + * The functions in this module will throw an easier-to-understand, + * easier-to-debug exception with a clear errors message message explaining the + * problem. (Instead of a confusing exception thrown inside the implementation + * of the `value` object). + */ +// $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +function typeName(value) { + { + // toStringTag is needed for namespaced types like Temporal.Instant + var hasToStringTag = typeof Symbol === 'function' && Symbol.toStringTag; + var type = hasToStringTag && value[Symbol.toStringTag] || value.constructor.name || 'Object'; // $FlowFixMe[incompatible-return] + + return type; + } +} // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + + +function willCoercionThrow(value) { + { + try { + testStringCoercion(value); + return false; + } catch (e) { + return true; } - function checkKeyStringCoercion(value) { - { - if (willCoercionThrow(value)) { - error( - "The provided key is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - typeName(value) - ); - - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } + } +} + +function testStringCoercion(value) { + // If you ended up here by following an exception call stack, here's what's + // happened: you supplied an object or symbol value to React (as a prop, key, + // DOM attribute, CSS property, string ref, etc.) and when React tried to + // coerce it to a string using `'' + value`, an exception was thrown. + // + // The most common types that will cause this exception are `Symbol` instances + // and Temporal objects like `Temporal.Instant`. But any object that has a + // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this + // exception. (Library authors do this to prevent users from using built-in + // numeric operators like `+` or comparison operators like `>=` because custom + // methods are needed to perform accurate arithmetic or comparison.) + // + // To fix the problem, coerce this object or symbol value to a string before + // passing it to React. The most reliable way is usually `String(value)`. + // + // To find which value is throwing, check the browser or debugger console. + // Before this exception was thrown, there should be `console.error` output + // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the + // problem and how that type was used: key, atrribute, input value prop, etc. + // In most cases, this console output also shows the component and its + // ancestor components where the exception happened. + // + // eslint-disable-next-line react-internal/safe-string-coercion + return '' + value; +} +function checkKeyStringCoercion(value) { + { + if (willCoercionThrow(value)) { + error('The provided key is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', typeName(value)); + + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } - function checkPropStringCoercion(value, propName) { - { - if (willCoercionThrow(value)) { - error( - "The provided `%s` prop is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - propName, - typeName(value) - ); - - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } + } +} +function checkPropStringCoercion(value, propName) { + { + if (willCoercionThrow(value)) { + error('The provided `%s` prop is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', propName, typeName(value)); + + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } + } +} - var REACT_CLIENT_REFERENCE$1 = Symbol.for("react.client.reference"); - function isValidElementType(type) { - if (typeof type === "string" || typeof type === "function") { - return true; - } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). - - if ( - type === REACT_FRAGMENT_TYPE || - type === REACT_PROFILER_TYPE || - enableDebugTracing || - type === REACT_STRICT_MODE_TYPE || - type === REACT_SUSPENSE_TYPE || - type === REACT_SUSPENSE_LIST_TYPE || - enableLegacyHidden || - type === REACT_OFFSCREEN_TYPE || - enableScopeAPI || - enableTransitionTracing - ) { - return true; - } +var REACT_CLIENT_REFERENCE$1 = Symbol.for('react.client.reference'); +function isValidElementType(type) { + if (typeof type === 'string' || typeof type === 'function') { + return true; + } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). - if (typeof type === "object" && type !== null) { - if ( - type.$$typeof === REACT_LAZY_TYPE || - type.$$typeof === REACT_MEMO_TYPE || - type.$$typeof === REACT_CONTEXT_TYPE || - (!enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE) || - (enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE) || - type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object - // types supported by any Flight configuration anywhere since - // we don't know which Flight build this will end up being used - // with. - type.$$typeof === REACT_CLIENT_REFERENCE$1 || - type.getModuleId !== undefined - ) { - return true; - } - } - return false; + if (type === REACT_FRAGMENT_TYPE || type === REACT_PROFILER_TYPE || enableDebugTracing || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || enableLegacyHidden || type === REACT_OFFSCREEN_TYPE || enableScopeAPI || enableTransitionTracing ) { + return true; + } + + if (typeof type === 'object' && type !== null) { + if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || !enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE || enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object + // types supported by any Flight configuration anywhere since + // we don't know which Flight build this will end up being used + // with. + type.$$typeof === REACT_CLIENT_REFERENCE$1 || type.getModuleId !== undefined) { + return true; } + } - var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare + return false; +} - function isArray(a) { - return isArrayImpl(a); - } +var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare - // Helpers to patch console.logs to avoid logging during side-effect free - // replaying on render function. This currently only patches the object - // lazily which won't cover if the log function was extracted eagerly. - // We could also eagerly patch the method. - var disabledDepth = 0; - var prevLog; - var prevInfo; - var prevWarn; - var prevError; - var prevGroup; - var prevGroupCollapsed; - var prevGroupEnd; - - function disabledLog() {} - - disabledLog.__reactDisabledLog = true; - function disableLogs() { - { - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - prevLog = console.log; - prevInfo = console.info; - prevWarn = console.warn; - prevError = console.error; - prevGroup = console.group; - prevGroupCollapsed = console.groupCollapsed; - prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 - - var props = { - configurable: true, - enumerable: true, - value: disabledLog, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - info: props, - log: props, - warn: props, - error: props, - group: props, - groupCollapsed: props, - groupEnd: props - }); - /* eslint-enable react-internal/no-production-logging */ - } +function isArray(a) { + return isArrayImpl(a); +} - disabledDepth++; - } +// Helpers to patch console.logs to avoid logging during side-effect free +// replaying on render function. This currently only patches the object +// lazily which won't cover if the log function was extracted eagerly. +// We could also eagerly patch the method. +var disabledDepth = 0; +var prevLog; +var prevInfo; +var prevWarn; +var prevError; +var prevGroup; +var prevGroupCollapsed; +var prevGroupEnd; + +function disabledLog() {} + +disabledLog.__reactDisabledLog = true; +function disableLogs() { + { + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + prevLog = console.log; + prevInfo = console.info; + prevWarn = console.warn; + prevError = console.error; + prevGroup = console.group; + prevGroupCollapsed = console.groupCollapsed; + prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 + + var props = { + configurable: true, + enumerable: true, + value: disabledLog, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + info: props, + log: props, + warn: props, + error: props, + group: props, + groupCollapsed: props, + groupEnd: props + }); + /* eslint-enable react-internal/no-production-logging */ } - function reenableLogs() { - { - disabledDepth--; - - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - var props = { - configurable: true, - enumerable: true, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - log: assign({}, props, { - value: prevLog - }), - info: assign({}, props, { - value: prevInfo - }), - warn: assign({}, props, { - value: prevWarn - }), - error: assign({}, props, { - value: prevError - }), - group: assign({}, props, { - value: prevGroup - }), - groupCollapsed: assign({}, props, { - value: prevGroupCollapsed - }), - groupEnd: assign({}, props, { - value: prevGroupEnd - }) - }); - /* eslint-enable react-internal/no-production-logging */ - } - if (disabledDepth < 0) { - error( - "disabledDepth fell below zero. " + - "This is a bug in React. Please file an issue." - ); - } - } + disabledDepth++; + } +} +function reenableLogs() { + { + disabledDepth--; + + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + var props = { + configurable: true, + enumerable: true, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + log: assign({}, props, { + value: prevLog + }), + info: assign({}, props, { + value: prevInfo + }), + warn: assign({}, props, { + value: prevWarn + }), + error: assign({}, props, { + value: prevError + }), + group: assign({}, props, { + value: prevGroup + }), + groupCollapsed: assign({}, props, { + value: prevGroupCollapsed + }), + groupEnd: assign({}, props, { + value: prevGroupEnd + }) + }); + /* eslint-enable react-internal/no-production-logging */ } - var prefix; - function describeBuiltInComponentFrame(name) { - if (enableComponentStackLocations) { - if (prefix === undefined) { - // Extract the VM specific prefix used by each line. - try { - throw Error(); - } catch (x) { - var match = x.stack.trim().match(/\n( *(at )?)/); - prefix = (match && match[1]) || ""; - } - } // We use the prefix to ensure our stacks line up with native stack frames. - - return "\n" + prefix + name; - } else { - return describeComponentFrame(name); - } + if (disabledDepth < 0) { + error('disabledDepth fell below zero. ' + 'This is a bug in React. Please file an issue.'); } - var reentry = false; - var componentFrameCache; + } +} - { - var PossiblyWeakMap = typeof WeakMap === "function" ? WeakMap : Map; - componentFrameCache = new PossiblyWeakMap(); - } - /** - * Leverages native browser/VM stack frames to get proper details (e.g. - * filename, line + col number) for a single component in a component stack. We - * do this by: - * (1) throwing and catching an error in the function - this will be our - * control error. - * (2) calling the component which will eventually throw an error that we'll - * catch - this will be our sample error. - * (3) diffing the control and sample error stacks to find the stack frame - * which represents our component. - */ - - function describeNativeComponentFrame(fn, construct) { - // If something asked for a stack inside a fake render, it should get ignored. - if (!fn || reentry) { - return ""; +var prefix; +function describeBuiltInComponentFrame(name) { + if (enableComponentStackLocations) { + if (prefix === undefined) { + // Extract the VM specific prefix used by each line. + try { + throw Error(); + } catch (x) { + var match = x.stack.trim().match(/\n( *(at )?)/); + prefix = match && match[1] || ''; } + } // We use the prefix to ensure our stacks line up with native stack frames. - { - var frame = componentFrameCache.get(fn); - if (frame !== undefined) { - return frame; - } - } + return '\n' + prefix + name; + } else { + return describeComponentFrame(name); + } +} +var reentry = false; +var componentFrameCache; - reentry = true; - var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. +{ + var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; + componentFrameCache = new PossiblyWeakMap(); +} +/** + * Leverages native browser/VM stack frames to get proper details (e.g. + * filename, line + col number) for a single component in a component stack. We + * do this by: + * (1) throwing and catching an error in the function - this will be our + * control error. + * (2) calling the component which will eventually throw an error that we'll + * catch - this will be our sample error. + * (3) diffing the control and sample error stacks to find the stack frame + * which represents our component. + */ - Error.prepareStackTrace = undefined; - var previousDispatcher = null; - { - previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function - // for warnings. +function describeNativeComponentFrame(fn, construct) { + // If something asked for a stack inside a fake render, it should get ignored. + if (!fn || reentry) { + return ''; + } - ReactSharedInternals.H = null; - disableLogs(); - } - /** - * Finding a common stack frame between sample and control errors can be - * tricky given the different types and levels of stack trace truncation from - * different JS VMs. So instead we'll attempt to control what that common - * frame should be through this object method: - * Having both the sample and control errors be in the function under the - * `DescribeNativeComponentFrameRoot` property, + setting the `name` and - * `displayName` properties of the function ensures that a stack - * frame exists that has the method name `DescribeNativeComponentFrameRoot` in - * it for both control and sample stacks. - */ - - var RunInRootFrame = { - DetermineComponentFrameRoot: function () { - var control; + { + var frame = componentFrameCache.get(fn); - try { - // This should throw. - if (construct) { - // Something should be setting the props in the constructor. - var Fake = function () { - throw Error(); - }; // $FlowFixMe[prop-missing] - - Object.defineProperty(Fake.prototype, "props", { - set: function () { - // We use a throwing setter instead of frozen or non-writable props - // because that won't throw in a non-strict mode function. - throw Error(); - } - }); - - if (typeof Reflect === "object" && Reflect.construct) { - // We construct a different control for this case to include any extra - // frames added by the construct call. - try { - Reflect.construct(Fake, []); - } catch (x) { - control = x; - } + if (frame !== undefined) { + return frame; + } + } + + reentry = true; + var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. + + Error.prepareStackTrace = undefined; + var previousDispatcher = null; + + { + previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function + // for warnings. + + ReactSharedInternals.H = null; + disableLogs(); + } + /** + * Finding a common stack frame between sample and control errors can be + * tricky given the different types and levels of stack trace truncation from + * different JS VMs. So instead we'll attempt to control what that common + * frame should be through this object method: + * Having both the sample and control errors be in the function under the + * `DescribeNativeComponentFrameRoot` property, + setting the `name` and + * `displayName` properties of the function ensures that a stack + * frame exists that has the method name `DescribeNativeComponentFrameRoot` in + * it for both control and sample stacks. + */ + + + var RunInRootFrame = { + DetermineComponentFrameRoot: function () { + var control; - Reflect.construct(fn, [], Fake); - } else { - try { - Fake.call(); - } catch (x) { - control = x; - } // $FlowFixMe[prop-missing] found when upgrading Flow + try { + // This should throw. + if (construct) { + // Something should be setting the props in the constructor. + var Fake = function () { + throw Error(); + }; // $FlowFixMe[prop-missing] - fn.call(Fake.prototype); - } - } else { - try { - throw Error(); - } catch (x) { - control = x; - } // TODO(luna): This will currently only throw if the function component - // tries to access React/ReactDOM/props. We should probably make this throw - // in simple components too - - var maybePromise = fn(); // If the function component returns a promise, it's likely an async - // component, which we don't yet support. Attach a noop catch handler to - // silence the error. - // TODO: Implement component stacks for async client components? - - if (maybePromise && typeof maybePromise.catch === "function") { - maybePromise.catch(function () {}); - } + + Object.defineProperty(Fake.prototype, 'props', { + set: function () { + // We use a throwing setter instead of frozen or non-writable props + // because that won't throw in a non-strict mode function. + throw Error(); } - } catch (sample) { - // This is inlined manually because closure doesn't do it for us. - if (sample && control && typeof sample.stack === "string") { - return [sample.stack, control.stack]; + }); + + if (typeof Reflect === 'object' && Reflect.construct) { + // We construct a different control for this case to include any extra + // frames added by the construct call. + try { + Reflect.construct(Fake, []); + } catch (x) { + control = x; } - } - return [null, null]; - } - }; // $FlowFixMe[prop-missing] - - RunInRootFrame.DetermineComponentFrameRoot.displayName = - "DetermineComponentFrameRoot"; - var namePropDescriptor = Object.getOwnPropertyDescriptor( - RunInRootFrame.DetermineComponentFrameRoot, - "name" - ); // Before ES6, the `name` property was not configurable. - - if (namePropDescriptor && namePropDescriptor.configurable) { - // V8 utilizes a function's `name` property when generating a stack trace. - Object.defineProperty( - RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor - // is set to `false`. - // $FlowFixMe[cannot-write] - "name", - { - value: "DetermineComponentFrameRoot" - } - ); - } + Reflect.construct(fn, [], Fake); + } else { + try { + Fake.call(); + } catch (x) { + control = x; + } // $FlowFixMe[prop-missing] found when upgrading Flow - try { - var _RunInRootFrame$Deter = - RunInRootFrame.DetermineComponentFrameRoot(), - sampleStack = _RunInRootFrame$Deter[0], - controlStack = _RunInRootFrame$Deter[1]; - - if (sampleStack && controlStack) { - // This extracts the first frame from the sample that isn't also in the control. - // Skipping one frame that we assume is the frame that calls the two. - var sampleLines = sampleStack.split("\n"); - var controlLines = controlStack.split("\n"); - var s = 0; - var c = 0; - - while ( - s < sampleLines.length && - !sampleLines[s].includes("DetermineComponentFrameRoot") - ) { - s++; - } - while ( - c < controlLines.length && - !controlLines[c].includes("DetermineComponentFrameRoot") - ) { - c++; - } // We couldn't find our intentionally injected common root frame, attempt - // to find another common root frame by search from the bottom of the - // control stack... - - if (s === sampleLines.length || c === controlLines.length) { - s = sampleLines.length - 1; - c = controlLines.length - 1; - - while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { - // We expect at least one stack frame to be shared. - // Typically this will be the root most one. However, stack frames may be - // cut off due to maximum stack limits. In this case, one maybe cut off - // earlier than the other. We assume that the sample is longer or the same - // and there for cut off earlier. So we should find the root most frame in - // the sample somewhere in the control. - c--; - } + fn.call(Fake.prototype); } + } else { + try { + throw Error(); + } catch (x) { + control = x; + } // TODO(luna): This will currently only throw if the function component + // tries to access React/ReactDOM/props. We should probably make this throw + // in simple components too - for (; s >= 1 && c >= 0; s--, c--) { - // Next we find the first one that isn't the same which should be the - // frame that called our sample function and the control. - if (sampleLines[s] !== controlLines[c]) { - // In V8, the first line is describing the message but other VMs don't. - // If we're about to return the first line, and the control is also on the same - // line, that's a pretty good indicator that our sample threw at same line as - // the control. I.e. before we entered the sample frame. So we ignore this result. - // This can happen if you passed a class to function component, or non-function. - if (s !== 1 || c !== 1) { - do { - s--; - c--; // We may still have similar intermediate frames from the construct call. - // The next one that isn't the same should be our match though. - - if (c < 0 || sampleLines[s] !== controlLines[c]) { - // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. - var _frame = - "\n" + sampleLines[s].replace(" at new ", " at "); // If our component frame is labeled "" - // but we have a user-provided "displayName" - // splice it in to make the stack more readable. - - if (fn.displayName && _frame.includes("")) { - _frame = _frame.replace("", fn.displayName); - } - - if (true) { - if (typeof fn === "function") { - componentFrameCache.set(fn, _frame); - } - } // Return the line we found. - - return _frame; - } - } while (s >= 1 && c >= 0); - } - break; - } + var maybePromise = fn(); // If the function component returns a promise, it's likely an async + // component, which we don't yet support. Attach a noop catch handler to + // silence the error. + // TODO: Implement component stacks for async client components? + + if (maybePromise && typeof maybePromise.catch === 'function') { + maybePromise.catch(function () {}); } } - } finally { - reentry = false; + } catch (sample) { + // This is inlined manually because closure doesn't do it for us. + if (sample && control && typeof sample.stack === 'string') { + return [sample.stack, control.stack]; + } + } - { - ReactSharedInternals.H = previousDispatcher; - reenableLogs(); + return [null, null]; + } + }; // $FlowFixMe[prop-missing] + + RunInRootFrame.DetermineComponentFrameRoot.displayName = 'DetermineComponentFrameRoot'; + var namePropDescriptor = Object.getOwnPropertyDescriptor(RunInRootFrame.DetermineComponentFrameRoot, 'name'); // Before ES6, the `name` property was not configurable. + + if (namePropDescriptor && namePropDescriptor.configurable) { + // V8 utilizes a function's `name` property when generating a stack trace. + Object.defineProperty(RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor + // is set to `false`. + // $FlowFixMe[cannot-write] + 'name', { + value: 'DetermineComponentFrameRoot' + }); + } + + try { + var _RunInRootFrame$Deter = RunInRootFrame.DetermineComponentFrameRoot(), + sampleStack = _RunInRootFrame$Deter[0], + controlStack = _RunInRootFrame$Deter[1]; + + if (sampleStack && controlStack) { + // This extracts the first frame from the sample that isn't also in the control. + // Skipping one frame that we assume is the frame that calls the two. + var sampleLines = sampleStack.split('\n'); + var controlLines = controlStack.split('\n'); + var s = 0; + var c = 0; + + while (s < sampleLines.length && !sampleLines[s].includes('DetermineComponentFrameRoot')) { + s++; + } + + while (c < controlLines.length && !controlLines[c].includes('DetermineComponentFrameRoot')) { + c++; + } // We couldn't find our intentionally injected common root frame, attempt + // to find another common root frame by search from the bottom of the + // control stack... + + + if (s === sampleLines.length || c === controlLines.length) { + s = sampleLines.length - 1; + c = controlLines.length - 1; + + while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { + // We expect at least one stack frame to be shared. + // Typically this will be the root most one. However, stack frames may be + // cut off due to maximum stack limits. In this case, one maybe cut off + // earlier than the other. We assume that the sample is longer or the same + // and there for cut off earlier. So we should find the root most frame in + // the sample somewhere in the control. + c--; } + } - Error.prepareStackTrace = previousPrepareStackTrace; - } // Fallback to just using the name if we couldn't make it throw. + for (; s >= 1 && c >= 0; s--, c--) { + // Next we find the first one that isn't the same which should be the + // frame that called our sample function and the control. + if (sampleLines[s] !== controlLines[c]) { + // In V8, the first line is describing the message but other VMs don't. + // If we're about to return the first line, and the control is also on the same + // line, that's a pretty good indicator that our sample threw at same line as + // the control. I.e. before we entered the sample frame. So we ignore this result. + // This can happen if you passed a class to function component, or non-function. + if (s !== 1 || c !== 1) { + do { + s--; + c--; // We may still have similar intermediate frames from the construct call. + // The next one that isn't the same should be our match though. + + if (c < 0 || sampleLines[s] !== controlLines[c]) { + // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. + var _frame = '\n' + sampleLines[s].replace(' at new ', ' at '); // If our component frame is labeled "" + // but we have a user-provided "displayName" + // splice it in to make the stack more readable. + + + if (fn.displayName && _frame.includes('')) { + _frame = _frame.replace('', fn.displayName); + } + + if (true) { + if (typeof fn === 'function') { + componentFrameCache.set(fn, _frame); + } + } // Return the line we found. - var name = fn ? fn.displayName || fn.name : ""; - var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ""; - { - if (typeof fn === "function") { - componentFrameCache.set(fn, syntheticFrame); + return _frame; + } + } while (s >= 1 && c >= 0); + } + + break; } } + } + } finally { + reentry = false; - return syntheticFrame; + { + ReactSharedInternals.H = previousDispatcher; + reenableLogs(); } - function describeComponentFrame(name) { - return "\n in " + (name || "Unknown"); + Error.prepareStackTrace = previousPrepareStackTrace; + } // Fallback to just using the name if we couldn't make it throw. + + + var name = fn ? fn.displayName || fn.name : ''; + var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ''; + + { + if (typeof fn === 'function') { + componentFrameCache.set(fn, syntheticFrame); } - function describeFunctionComponentFrame(fn) { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(fn, false); - } else { - if (!fn) { - return ""; - } + } - var name = fn.displayName || fn.name || null; - return describeComponentFrame(name); - } + return syntheticFrame; +} + +function describeComponentFrame(name) { + return '\n in ' + (name || 'Unknown'); +} +function describeFunctionComponentFrame(fn) { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(fn, false); + } else { + if (!fn) { + return ''; } - function shouldConstruct(Component) { - var prototype = Component.prototype; - return !!(prototype && prototype.isReactComponent); + var name = fn.displayName || fn.name || null; + return describeComponentFrame(name); + } +} + +function shouldConstruct(Component) { + var prototype = Component.prototype; + return !!(prototype && prototype.isReactComponent); +} + +function describeUnknownElementTypeFrameInDEV(type) { + + if (type == null) { + return ''; + } + + if (typeof type === 'function') { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(type, shouldConstruct(type)); + } else { + return describeFunctionComponentFrame(type); } + } - function describeUnknownElementTypeFrameInDEV(type) { - if (type == null) { - return ""; - } + if (typeof type === 'string') { + return describeBuiltInComponentFrame(type); + } - if (typeof type === "function") { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(type, shouldConstruct(type)); - } else { - return describeFunctionComponentFrame(type); + switch (type) { + case REACT_SUSPENSE_TYPE: + return describeBuiltInComponentFrame('Suspense'); + + case REACT_SUSPENSE_LIST_TYPE: + return describeBuiltInComponentFrame('SuspenseList'); + } + + if (typeof type === 'object') { + switch (type.$$typeof) { + case REACT_FORWARD_REF_TYPE: + return describeFunctionComponentFrame(type.render); + + case REACT_MEMO_TYPE: + // Memo may contain any component type so we recursively resolve it. + return describeUnknownElementTypeFrameInDEV(type.type); + + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; + + try { + // Lazy may contain any component type so we recursively resolve it. + return describeUnknownElementTypeFrameInDEV(init(payload)); + } catch (x) {} } + } + } + + return ''; +} + +var FunctionComponent = 0; +var ClassComponent = 1; +var HostRoot = 3; // Root of a host tree. Could be nested inside another node. + +var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. + +var HostComponent = 5; +var HostText = 6; +var Fragment = 7; +var Mode = 8; +var ContextConsumer = 9; +var ContextProvider = 10; +var ForwardRef = 11; +var Profiler = 12; +var SuspenseComponent = 13; +var MemoComponent = 14; +var SimpleMemoComponent = 15; +var LazyComponent = 16; +var IncompleteClassComponent = 17; +var DehydratedFragment = 18; +var SuspenseListComponent = 19; +var ScopeComponent = 21; +var OffscreenComponent = 22; +var CacheComponent = 24; +var TracingMarkerComponent = 25; +var HostHoistable = 26; +var HostSingleton = 27; +var IncompleteFunctionComponent = 28; + +function getWrappedName(outerType, innerType, wrapperName) { + var functionName = innerType.displayName || innerType.name || ''; + return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName); +} // Keep in sync with shared/getComponentNameFromType + + +function getContextName(type) { + return type.displayName || 'Context'; +} +function getComponentNameFromFiber(fiber) { + var tag = fiber.tag, + type = fiber.type; + + switch (tag) { + case CacheComponent: + return 'Cache'; + + case ContextConsumer: + if (enableRenderableContext) { + var consumer = type; + return getContextName(consumer._context) + '.Consumer'; + } else { + var context = type; + return getContextName(context) + '.Consumer'; } - if (typeof type === "string") { - return describeBuiltInComponentFrame(type); + case ContextProvider: + if (enableRenderableContext) { + var _context = type; + return getContextName(_context) + '.Provider'; + } else { + var provider = type; + return getContextName(provider._context) + '.Provider'; } - switch (type) { - case REACT_SUSPENSE_TYPE: - return describeBuiltInComponentFrame("Suspense"); + case DehydratedFragment: + return 'DehydratedFragment'; - case REACT_SUSPENSE_LIST_TYPE: - return describeBuiltInComponentFrame("SuspenseList"); - } + case ForwardRef: + return getWrappedName(type, type.render, 'ForwardRef'); - if (typeof type === "object") { - switch (type.$$typeof) { - case REACT_FORWARD_REF_TYPE: - return describeFunctionComponentFrame(type.render); + case Fragment: + return 'Fragment'; - case REACT_MEMO_TYPE: - // Memo may contain any component type so we recursively resolve it. - return describeUnknownElementTypeFrameInDEV(type.type); + case HostHoistable: + case HostSingleton: + case HostComponent: + // Host component type is the display name (e.g. "div", "View") + return type; - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; + case HostPortal: + return 'Portal'; - try { - // Lazy may contain any component type so we recursively resolve it. - return describeUnknownElementTypeFrameInDEV(init(payload)); - } catch (x) {} - } - } - } + case HostRoot: + return 'Root'; - return ""; - } + case HostText: + return 'Text'; - var FunctionComponent = 0; - var ClassComponent = 1; - var HostRoot = 3; // Root of a host tree. Could be nested inside another node. - - var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. - - var HostComponent = 5; - var HostText = 6; - var Fragment = 7; - var Mode = 8; - var ContextConsumer = 9; - var ContextProvider = 10; - var ForwardRef = 11; - var Profiler = 12; - var SuspenseComponent = 13; - var MemoComponent = 14; - var SimpleMemoComponent = 15; - var LazyComponent = 16; - var IncompleteClassComponent = 17; - var DehydratedFragment = 18; - var SuspenseListComponent = 19; - var ScopeComponent = 21; - var OffscreenComponent = 22; - var CacheComponent = 24; - var TracingMarkerComponent = 25; - var HostHoistable = 26; - var HostSingleton = 27; - var IncompleteFunctionComponent = 28; - - function getWrappedName(outerType, innerType, wrapperName) { - var functionName = innerType.displayName || innerType.name || ""; - return ( - outerType.displayName || - (functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName) - ); - } // Keep in sync with shared/getComponentNameFromType - - function getContextName(type) { - return type.displayName || "Context"; - } - function getComponentNameFromFiber(fiber) { - var tag = fiber.tag, - type = fiber.type; - - switch (tag) { - case CacheComponent: - return "Cache"; - - case ContextConsumer: - if (enableRenderableContext) { - var consumer = type; - return getContextName(consumer._context) + ".Consumer"; - } else { - var context = type; - return getContextName(context) + ".Consumer"; - } + case LazyComponent: + // Name comes from the type in this case; we don't have a tag. + return getComponentNameFromType(type); - case ContextProvider: - if (enableRenderableContext) { - var _context = type; - return getContextName(_context) + ".Provider"; - } else { - var provider = type; - return getContextName(provider._context) + ".Provider"; - } + case Mode: + if (type === REACT_STRICT_MODE_TYPE) { + // Don't be less specific than shared/getComponentNameFromType + return 'StrictMode'; + } - case DehydratedFragment: - return "DehydratedFragment"; + return 'Mode'; - case ForwardRef: - return getWrappedName(type, type.render, "ForwardRef"); + case OffscreenComponent: + return 'Offscreen'; - case Fragment: - return "Fragment"; + case Profiler: + return 'Profiler'; - case HostHoistable: - case HostSingleton: - case HostComponent: - // Host component type is the display name (e.g. "div", "View") - return type; + case ScopeComponent: + return 'Scope'; - case HostPortal: - return "Portal"; + case SuspenseComponent: + return 'Suspense'; - case HostRoot: - return "Root"; + case SuspenseListComponent: + return 'SuspenseList'; - case HostText: - return "Text"; + case TracingMarkerComponent: + return 'TracingMarker'; + // The display name for these tags come from the user-provided type: - case LazyComponent: - // Name comes from the type in this case; we don't have a tag. - return getComponentNameFromType(type); + case IncompleteClassComponent: + case IncompleteFunctionComponent: - case Mode: - if (type === REACT_STRICT_MODE_TYPE) { - // Don't be less specific than shared/getComponentNameFromType - return "StrictMode"; - } + // Fallthrough - return "Mode"; + case ClassComponent: + case FunctionComponent: + case MemoComponent: + case SimpleMemoComponent: + if (typeof type === 'function') { + return type.displayName || type.name || null; + } - case OffscreenComponent: - return "Offscreen"; + if (typeof type === 'string') { + return type; + } - case Profiler: - return "Profiler"; + break; - case ScopeComponent: - return "Scope"; + } - case SuspenseComponent: - return "Suspense"; + return null; +} - case SuspenseListComponent: - return "SuspenseList"; +var REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference'); +var specialPropKeyWarningShown; +var specialPropRefWarningShown; +var didWarnAboutStringRefs; - case TracingMarkerComponent: - return "TracingMarker"; - // The display name for these tags come from the user-provided type: +{ + didWarnAboutStringRefs = {}; +} - case IncompleteClassComponent: - case IncompleteFunctionComponent: +function hasValidRef(config) { + { + if (hasOwnProperty.call(config, 'ref')) { + var getter = Object.getOwnPropertyDescriptor(config, 'ref').get; - // Fallthrough + if (getter && getter.isReactWarning) { + return false; + } + } + } - case ClassComponent: - case FunctionComponent: - case MemoComponent: - case SimpleMemoComponent: - if (typeof type === "function") { - return type.displayName || type.name || null; - } + return config.ref !== undefined; +} - if (typeof type === "string") { - return type; - } +function hasValidKey(config) { + { + if (hasOwnProperty.call(config, 'key')) { + var getter = Object.getOwnPropertyDescriptor(config, 'key').get; - break; + if (getter && getter.isReactWarning) { + return false; } - - return null; } + } - var REACT_CLIENT_REFERENCE = Symbol.for("react.client.reference"); - var specialPropKeyWarningShown; - var specialPropRefWarningShown; - var didWarnAboutStringRefs; + return config.key !== undefined; +} - { - didWarnAboutStringRefs = {}; - } +function warnIfStringRefCannotBeAutoConverted(config, self) { + { + if (typeof config.ref === 'string' && ReactSharedInternals.owner && self && ReactSharedInternals.owner.stateNode !== self) { + var componentName = getComponentNameFromType(ReactSharedInternals.owner.type); - function hasValidRef(config) { - { - if (hasOwnProperty.call(config, "ref")) { - var getter = Object.getOwnPropertyDescriptor(config, "ref").get; + if (!didWarnAboutStringRefs[componentName]) { + error('Component "%s" contains the string ref "%s". ' + 'Support for string refs will be removed in a future major release. ' + 'This case cannot be automatically converted to an arrow function. ' + 'We ask you to manually fix this case by using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref', getComponentNameFromType(ReactSharedInternals.owner.type), config.ref); - if (getter && getter.isReactWarning) { - return false; - } - } + didWarnAboutStringRefs[componentName] = true; } - - return config.ref !== undefined; } + } +} - function hasValidKey(config) { - { - if (hasOwnProperty.call(config, "key")) { - var getter = Object.getOwnPropertyDescriptor(config, "key").get; +function defineKeyPropWarningGetter(props, displayName) { + { + var warnAboutAccessingKey = function () { + if (!specialPropKeyWarningShown) { + specialPropKeyWarningShown = true; - if (getter && getter.isReactWarning) { - return false; - } - } + error('%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://react.dev/link/special-props)', displayName); } + }; + + warnAboutAccessingKey.isReactWarning = true; + Object.defineProperty(props, 'key', { + get: warnAboutAccessingKey, + configurable: true + }); + } +} - return config.key !== undefined; - } +function defineRefPropWarningGetter(props, displayName) { + { + { + var warnAboutAccessingRef = function () { + if (!specialPropRefWarningShown) { + specialPropRefWarningShown = true; - function warnIfStringRefCannotBeAutoConverted(config, self) { - { - if ( - typeof config.ref === "string" && - ReactSharedInternals.owner && - self && - ReactSharedInternals.owner.stateNode !== self - ) { - var componentName = getComponentNameFromType( - ReactSharedInternals.owner.type - ); - - if (!didWarnAboutStringRefs[componentName]) { - error( - 'Component "%s" contains the string ref "%s". ' + - "Support for string refs will be removed in a future major release. " + - "This case cannot be automatically converted to an arrow function. " + - "We ask you to manually fix this case by using useRef() or createRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref", - getComponentNameFromType(ReactSharedInternals.owner.type), - config.ref - ); - - didWarnAboutStringRefs[componentName] = true; - } + error('%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://react.dev/link/special-props)', displayName); } - } + }; + + warnAboutAccessingRef.isReactWarning = true; + Object.defineProperty(props, 'ref', { + get: warnAboutAccessingRef, + configurable: true + }); } + } +} +/** + * Factory method to create a new React element. This no longer adheres to + * the class pattern, so do not use new to call it. Also, instanceof check + * will not work. Instead test $$typeof field against Symbol.for('react.element') to check + * if something is a React Element. + * + * @param {*} type + * @param {*} props + * @param {*} key + * @param {string|object} ref + * @param {*} owner + * @param {*} self A *temporary* helper to detect places where `this` is + * different from the `owner` when React.createElement is called, so that we + * can warn. We want to get rid of owner and replace string `ref`s with arrow + * functions, and as long as `this` and owner are the same, there will be no + * change in behavior. + * @param {*} source An annotation object (added by a transpiler or otherwise) + * indicating filename, line number, and/or other information. + * @internal + */ - function defineKeyPropWarningGetter(props, displayName) { - { - var warnAboutAccessingKey = function () { - if (!specialPropKeyWarningShown) { - specialPropKeyWarningShown = true; - - error( - "%s: `key` is not a prop. Trying to access it will result " + - "in `undefined` being returned. If you need to access the same " + - "value within the child component, you should pass it as a different " + - "prop. (https://react.dev/link/special-props)", - displayName - ); - } - }; - warnAboutAccessingKey.isReactWarning = true; - Object.defineProperty(props, "key", { - get: warnAboutAccessingKey, - configurable: true - }); - } +function ReactElement(type, key, _ref, self, source, owner, props) { + var ref; + + { + ref = _ref; + } + + var element; + + { + // In prod, `ref` is a regular property. It will be removed in a + // future release. + element = { + // This tag allows us to uniquely identify this as a React Element + $$typeof: REACT_ELEMENT_TYPE, + // Built-in properties that belong on the element + type: type, + key: key, + ref: ref, + props: props, + // Record the component responsible for creating this element. + _owner: owner + }; + } + + { + // The validation flag is currently mutative. We put it on + // an external backing store so that we can freeze the whole object. + // This can be replaced with a WeakMap once they are implemented in + // commonly used development environments. + element._store = {}; // To make comparing ReactElements easier for testing purposes, we make + // the validation flag non-enumerable (where possible, which should + // include every environment we run tests in), so the test framework + // ignores it. + + Object.defineProperty(element._store, 'validated', { + configurable: false, + enumerable: false, + writable: true, + value: false + }); // debugInfo contains Server Component debug information. + + Object.defineProperty(element, '_debugInfo', { + configurable: false, + enumerable: false, + writable: true, + value: null + }); + + if (Object.freeze) { + Object.freeze(element.props); + Object.freeze(element); } + } - function defineRefPropWarningGetter(props, displayName) { - { - { - var warnAboutAccessingRef = function () { - if (!specialPropRefWarningShown) { - specialPropRefWarningShown = true; - - error( - "%s: `ref` is not a prop. Trying to access it will result " + - "in `undefined` being returned. If you need to access the same " + - "value within the child component, you should pass it as a different " + - "prop. (https://react.dev/link/special-props)", - displayName - ); - } - }; + return element; +} +// support `jsx` and `jsxs` when running in development. This supports the case +// where a third-party dependency ships code that was compiled for production; +// we want to still provide warnings in development. +// +// So these functions are the _dev_ implementations of the _production_ +// API signatures. +// +// Since these functions are dev-only, it's ok to add an indirection here. They +// only exist to provide different versions of `isStaticChildren`. (We shouldn't +// use this pattern for the prod versions, though, because it will add an call +// frame.) + +function jsxProdSignatureRunningInDevWithDynamicChildren(type, config, maybeKey, source, self) { + { + var isStaticChildren = false; + return jsxDEV(type, config, maybeKey, isStaticChildren, source, self); + } +} +function jsxProdSignatureRunningInDevWithStaticChildren(type, config, maybeKey, source, self) { + { + var isStaticChildren = true; + return jsxDEV(type, config, maybeKey, isStaticChildren, source, self); + } +} +var didWarnAboutKeySpread = {}; +/** + * https://github.com/reactjs/rfcs/pull/107 + * @param {*} type + * @param {object} props + * @param {string} key + */ - warnAboutAccessingRef.isReactWarning = true; - Object.defineProperty(props, "ref", { - get: warnAboutAccessingRef, - configurable: true - }); - } - } - } - /** - * Factory method to create a new React element. This no longer adheres to - * the class pattern, so do not use new to call it. Also, instanceof check - * will not work. Instead test $$typeof field against Symbol.for('react.element') to check - * if something is a React Element. - * - * @param {*} type - * @param {*} props - * @param {*} key - * @param {string|object} ref - * @param {*} owner - * @param {*} self A *temporary* helper to detect places where `this` is - * different from the `owner` when React.createElement is called, so that we - * can warn. We want to get rid of owner and replace string `ref`s with arrow - * functions, and as long as `this` and owner are the same, there will be no - * change in behavior. - * @param {*} source An annotation object (added by a transpiler or otherwise) - * indicating filename, line number, and/or other information. - * @internal - */ - - function ReactElement(type, key, _ref, self, source, owner, props) { - var ref; +function jsxDEV(type, config, maybeKey, isStaticChildren, source, self) { + { + if (!isValidElementType(type)) { + // This is an invalid element type. + // + // We warn in this case but don't throw. We expect the element creation to + // succeed and there will likely be errors in render. + var info = ''; - { - ref = _ref; + if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) { + info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports."; } - var element; + var typeString; - { - // In prod, `ref` is a regular property. It will be removed in a - // future release. - element = { - // This tag allows us to uniquely identify this as a React Element - $$typeof: REACT_ELEMENT_TYPE, - // Built-in properties that belong on the element - type: type, - key: key, - ref: ref, - props: props, - // Record the component responsible for creating this element. - _owner: owner - }; + if (type === null) { + typeString = 'null'; + } else if (isArray(type)) { + typeString = 'array'; + } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) { + typeString = "<" + (getComponentNameFromType(type.type) || 'Unknown') + " />"; + info = ' Did you accidentally export a JSX literal instead of a component?'; + } else { + typeString = typeof type; } - { - // The validation flag is currently mutative. We put it on - // an external backing store so that we can freeze the whole object. - // This can be replaced with a WeakMap once they are implemented in - // commonly used development environments. - element._store = {}; // To make comparing ReactElements easier for testing purposes, we make - // the validation flag non-enumerable (where possible, which should - // include every environment we run tests in), so the test framework - // ignores it. - - Object.defineProperty(element._store, "validated", { - configurable: false, - enumerable: false, - writable: true, - value: false - }); // debugInfo contains Server Component debug information. - - Object.defineProperty(element, "_debugInfo", { - configurable: false, - enumerable: false, - writable: true, - value: null - }); - - if (Object.freeze) { - Object.freeze(element.props); - Object.freeze(element); + error('React.jsx: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info); + } else { + // This is a valid element type. + // Skip key warning if the type isn't valid since our key validation logic + // doesn't expect a non-string/function type and can throw confusing + // errors. We don't want exception behavior to differ between dev and + // prod. (Rendering will throw with a helpful message and as soon as the + // type is fixed, the key warnings will appear.) + var children = config.children; + + if (children !== undefined) { + if (isStaticChildren) { + if (isArray(children)) { + for (var i = 0; i < children.length; i++) { + validateChildKeys(children[i], type); + } + + if (Object.freeze) { + Object.freeze(children); + } + } else { + error('React.jsx: Static children should always be an array. ' + 'You are likely explicitly calling React.jsxs or React.jsxDEV. ' + 'Use the Babel transform instead.'); + } + } else { + validateChildKeys(children, type); } } + } // Warn about key spread regardless of whether the type is valid. - return element; - } - // support `jsx` and `jsxs` when running in development. This supports the case - // where a third-party dependency ships code that was compiled for production; - // we want to still provide warnings in development. - // - // So these functions are the _dev_ implementations of the _production_ - // API signatures. - // - // Since these functions are dev-only, it's ok to add an indirection here. They - // only exist to provide different versions of `isStaticChildren`. (We shouldn't - // use this pattern for the prod versions, though, because it will add an call - // frame.) - - function jsxProdSignatureRunningInDevWithDynamicChildren( - type, - config, - maybeKey, - source, - self - ) { - { - var isStaticChildren = false; - return jsxDEV(type, config, maybeKey, isStaticChildren, source, self); + + if (hasOwnProperty.call(config, 'key')) { + var componentName = getComponentNameFromType(type); + var keys = Object.keys(config).filter(function (k) { + return k !== 'key'; + }); + var beforeExample = keys.length > 0 ? '{key: someKey, ' + keys.join(': ..., ') + ': ...}' : '{key: someKey}'; + + if (!didWarnAboutKeySpread[componentName + beforeExample]) { + var afterExample = keys.length > 0 ? '{' + keys.join(': ..., ') + ': ...}' : '{}'; + + error('A props object containing a "key" prop is being spread into JSX:\n' + ' let props = %s;\n' + ' <%s {...props} />\n' + 'React keys must be passed directly to JSX without using spread:\n' + ' let props = %s;\n' + ' <%s key={someKey} {...props} />', beforeExample, componentName, afterExample, componentName); + + didWarnAboutKeySpread[componentName + beforeExample] = true; } } - function jsxProdSignatureRunningInDevWithStaticChildren( - type, - config, - maybeKey, - source, - self - ) { + + var key = null; + var ref = null; // Currently, key can be spread in as a prop. This causes a potential + // issue if key is also explicitly declared (ie.
+ // or
). We want to deprecate key spread, + // but as an intermediary step, we will use jsxDEV for everything except + //
, because we aren't currently able to tell if + // key is explicitly declared to be undefined or not. + + if (maybeKey !== undefined) { { - var isStaticChildren = true; - return jsxDEV(type, config, maybeKey, isStaticChildren, source, self); + checkKeyStringCoercion(maybeKey); } + + key = '' + maybeKey; } - var didWarnAboutKeySpread = {}; - /** - * https://github.com/reactjs/rfcs/pull/107 - * @param {*} type - * @param {object} props - * @param {string} key - */ - - function jsxDEV(type, config, maybeKey, isStaticChildren, source, self) { - { - if (!isValidElementType(type)) { - // This is an invalid element type. - // - // We warn in this case but don't throw. We expect the element creation to - // succeed and there will likely be errors in render. - var info = ""; - - if ( - type === undefined || - (typeof type === "object" && - type !== null && - Object.keys(type).length === 0) - ) { - info += - " You likely forgot to export your component from the file " + - "it's defined in, or you might have mixed up default and named imports."; - } - var typeString; - - if (type === null) { - typeString = "null"; - } else if (isArray(type)) { - typeString = "array"; - } else if ( - type !== undefined && - type.$$typeof === REACT_ELEMENT_TYPE - ) { - typeString = - "<" + (getComponentNameFromType(type.type) || "Unknown") + " />"; - info = - " Did you accidentally export a JSX literal instead of a component?"; - } else { - typeString = typeof type; - } + if (hasValidKey(config)) { + { + checkKeyStringCoercion(config.key); + } - error( - "React.jsx: type is invalid -- expected a string (for " + - "built-in components) or a class/function (for composite " + - "components) but got: %s.%s", - typeString, - info - ); - } else { - // This is a valid element type. - // Skip key warning if the type isn't valid since our key validation logic - // doesn't expect a non-string/function type and can throw confusing - // errors. We don't want exception behavior to differ between dev and - // prod. (Rendering will throw with a helpful message and as soon as the - // type is fixed, the key warnings will appear.) - var children = config.children; - - if (children !== undefined) { - if (isStaticChildren) { - if (isArray(children)) { - for (var i = 0; i < children.length; i++) { - validateChildKeys(children[i], type); - } + key = '' + config.key; + } - if (Object.freeze) { - Object.freeze(children); - } - } else { - error( - "React.jsx: Static children should always be an array. " + - "You are likely explicitly calling React.jsxs or React.jsxDEV. " + - "Use the Babel transform instead." - ); - } - } else { - validateChildKeys(children, type); - } - } - } // Warn about key spread regardless of whether the type is valid. + if (hasValidRef(config)) { + { + ref = config.ref; - if (hasOwnProperty.call(config, "key")) { - var componentName = getComponentNameFromType(type); - var keys = Object.keys(config).filter(function (k) { - return k !== "key"; - }); - var beforeExample = - keys.length > 0 - ? "{key: someKey, " + keys.join(": ..., ") + ": ...}" - : "{key: someKey}"; - - if (!didWarnAboutKeySpread[componentName + beforeExample]) { - var afterExample = - keys.length > 0 ? "{" + keys.join(": ..., ") + ": ...}" : "{}"; - - error( - 'A props object containing a "key" prop is being spread into JSX:\n' + - " let props = %s;\n" + - " <%s {...props} />\n" + - "React keys must be passed directly to JSX without using spread:\n" + - " let props = %s;\n" + - " <%s key={someKey} {...props} />", - beforeExample, - componentName, - afterExample, - componentName - ); - - didWarnAboutKeySpread[componentName + beforeExample] = true; - } + { + ref = coerceStringRef(ref, ReactSharedInternals.owner, type); } + } - var key = null; - var ref = null; // Currently, key can be spread in as a prop. This causes a potential - // issue if key is also explicitly declared (ie.
- // or
). We want to deprecate key spread, - // but as an intermediary step, we will use jsxDEV for everything except - //
, because we aren't currently able to tell if - // key is explicitly declared to be undefined or not. - - if (maybeKey !== undefined) { - { - checkKeyStringCoercion(maybeKey); - } + { + warnIfStringRefCannotBeAutoConverted(config, self); + } + } - key = "" + maybeKey; - } + var props; - if (hasValidKey(config)) { + { + // We need to remove reserved props (key, prop, ref). Create a fresh props + // object and copy over all the non-reserved props. We don't use `delete` + // because in V8 it will deopt the object to dictionary mode. + props = {}; + + for (var propName in config) { + // Skip over reserved prop names + if (propName !== 'key' && (propName !== 'ref')) { { - checkKeyStringCoercion(config.key); + props[propName] = config[propName]; } - - key = "" + config.key; } + } + } - if (hasValidRef(config)) { - { - ref = config.ref; - - { - ref = coerceStringRef(ref, ReactSharedInternals.owner, type); - } - } + if (!disableDefaultPropsExceptForClasses) { + // Resolve default props + if (type && type.defaultProps) { + var defaultProps = type.defaultProps; - { - warnIfStringRefCannotBeAutoConverted(config, self); + for (var _propName2 in defaultProps) { + if (props[_propName2] === undefined) { + props[_propName2] = defaultProps[_propName2]; } } + } + } - var props; - - { - // We need to remove reserved props (key, prop, ref). Create a fresh props - // object and copy over all the non-reserved props. We don't use `delete` - // because in V8 it will deopt the object to dictionary mode. - props = {}; - - for (var propName in config) { - // Skip over reserved prop names - if (propName !== "key" && propName !== "ref") { - { - props[propName] = config[propName]; - } - } - } - } + if (key || ref) { + var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type; - if (!disableDefaultPropsExceptForClasses) { - // Resolve default props - if (type && type.defaultProps) { - var defaultProps = type.defaultProps; + if (key) { + defineKeyPropWarningGetter(props, displayName); + } - for (var _propName2 in defaultProps) { - if (props[_propName2] === undefined) { - props[_propName2] = defaultProps[_propName2]; - } - } - } - } + if (ref) { + defineRefPropWarningGetter(props, displayName); + } + } - if (key || ref) { - var displayName = - typeof type === "function" - ? type.displayName || type.name || "Unknown" - : type; + var element = ReactElement(type, key, ref, self, source, ReactSharedInternals.owner, props); - if (key) { - defineKeyPropWarningGetter(props, displayName); - } + if (type === REACT_FRAGMENT_TYPE) { + validateFragmentProps(element); + } - if (ref) { - defineRefPropWarningGetter(props, displayName); - } - } + return element; + } +} - var element = ReactElement( - type, - key, - ref, - self, - source, - ReactSharedInternals.owner, - props - ); - - if (type === REACT_FRAGMENT_TYPE) { - validateFragmentProps(element); - } +function getDeclarationErrorAddendum() { + { + if (ReactSharedInternals.owner) { + var name = getComponentNameFromType(ReactSharedInternals.owner.type); - return element; + if (name) { + return '\n\nCheck the render method of `' + name + '`.'; } } - function getDeclarationErrorAddendum() { - { - if (ReactSharedInternals.owner) { - var name = getComponentNameFromType(ReactSharedInternals.owner.type); + return ''; + } +} +/** + * Ensure that every element either is passed in a static location, in an + * array with an explicit keys property defined, or in an object literal + * with valid key property. + * + * @internal + * @param {ReactNode} node Statically passed child of any type. + * @param {*} parentType node's parent's type. + */ - if (name) { - return "\n\nCheck the render method of `" + name + "`."; - } - } - return ""; - } +function validateChildKeys(node, parentType) { + { + if (typeof node !== 'object' || !node) { + return; } - /** - * Ensure that every element either is passed in a static location, in an - * array with an explicit keys property defined, or in an object literal - * with valid key property. - * - * @internal - * @param {ReactNode} node Statically passed child of any type. - * @param {*} parentType node's parent's type. - */ - - function validateChildKeys(node, parentType) { - { - if (typeof node !== "object" || !node) { - return; - } - if (node.$$typeof === REACT_CLIENT_REFERENCE); - else if (isArray(node)) { - for (var i = 0; i < node.length; i++) { - var child = node[i]; + if (node.$$typeof === REACT_CLIENT_REFERENCE) ; else if (isArray(node)) { + for (var i = 0; i < node.length; i++) { + var child = node[i]; - if (isValidElement(child)) { - validateExplicitKey(child, parentType); - } - } - } else if (isValidElement(node)) { - // This element was passed in a valid location. - if (node._store) { - node._store.validated = true; - } - } else { - var iteratorFn = getIteratorFn(node); - - if (typeof iteratorFn === "function") { - // Entry iterators used to provide implicit keys, - // but now we print a separate warning for them later. - if (iteratorFn !== node.entries) { - var iterator = iteratorFn.call(node); - var step; - - while (!(step = iterator.next()).done) { - if (isValidElement(step.value)) { - validateExplicitKey(step.value, parentType); - } - } + if (isValidElement(child)) { + validateExplicitKey(child, parentType); + } + } + } else if (isValidElement(node)) { + // This element was passed in a valid location. + if (node._store) { + node._store.validated = true; + } + } else { + var iteratorFn = getIteratorFn(node); + + if (typeof iteratorFn === 'function') { + // Entry iterators used to provide implicit keys, + // but now we print a separate warning for them later. + if (iteratorFn !== node.entries) { + var iterator = iteratorFn.call(node); + var step; + + while (!(step = iterator.next()).done) { + if (isValidElement(step.value)) { + validateExplicitKey(step.value, parentType); } } } } } - /** - * Verifies the object is a ReactElement. - * See https://reactjs.org/docs/react-api.html#isvalidelement - * @param {?object} object - * @return {boolean} True if `object` is a ReactElement. - * @final - */ - - function isValidElement(object) { - return ( - typeof object === "object" && - object !== null && - object.$$typeof === REACT_ELEMENT_TYPE - ); - } - var ownerHasKeyUseWarning = {}; - /** - * Warn if the element doesn't have an explicit key assigned to it. - * This element is in an array. The array could grow and shrink or be - * reordered. All children that haven't already been validated are required to - * have a "key" property assigned to it. Error statuses are cached so a warning - * will only be shown once. - * - * @internal - * @param {ReactElement} element Element that requires a key. - * @param {*} parentType element's parent's type. - */ - - function validateExplicitKey(element, parentType) { - { - if ( - !element._store || - element._store.validated || - element.key != null - ) { - return; - } + } +} +/** + * Verifies the object is a ReactElement. + * See https://reactjs.org/docs/react-api.html#isvalidelement + * @param {?object} object + * @return {boolean} True if `object` is a ReactElement. + * @final + */ - element._store.validated = true; - var currentComponentErrorInfo = - getCurrentComponentErrorInfo(parentType); - if (ownerHasKeyUseWarning[currentComponentErrorInfo]) { - return; - } +function isValidElement(object) { + return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE; +} +var ownerHasKeyUseWarning = {}; +/** + * Warn if the element doesn't have an explicit key assigned to it. + * This element is in an array. The array could grow and shrink or be + * reordered. All children that haven't already been validated are required to + * have a "key" property assigned to it. Error statuses are cached so a warning + * will only be shown once. + * + * @internal + * @param {ReactElement} element Element that requires a key. + * @param {*} parentType element's parent's type. + */ - ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a - // property, it may be the creator of the child that's responsible for - // assigning it a key. +function validateExplicitKey(element, parentType) { + { + if (!element._store || element._store.validated || element.key != null) { + return; + } - var childOwner = ""; + element._store.validated = true; + var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType); - if ( - element && - element._owner != null && - element._owner !== ReactSharedInternals.owner - ) { - var ownerName = null; + if (ownerHasKeyUseWarning[currentComponentErrorInfo]) { + return; + } - if (typeof element._owner.tag === "number") { - ownerName = getComponentNameFromType(element._owner.type); - } else if (typeof element._owner.name === "string") { - ownerName = element._owner.name; - } // Give the component that originally created this child. + ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a + // property, it may be the creator of the child that's responsible for + // assigning it a key. - childOwner = " It was passed a child from " + ownerName + "."; - } + var childOwner = ''; - setCurrentlyValidatingElement(element); + if (element && element._owner != null && element._owner !== ReactSharedInternals.owner) { + var ownerName = null; - error( - 'Each child in a list should have a unique "key" prop.' + - "%s%s See https://react.dev/link/warning-keys for more information.", - currentComponentErrorInfo, - childOwner - ); + if (typeof element._owner.tag === 'number') { + ownerName = getComponentNameFromType(element._owner.type); + } else if (typeof element._owner.name === 'string') { + ownerName = element._owner.name; + } // Give the component that originally created this child. - setCurrentlyValidatingElement(null); - } - } - function setCurrentlyValidatingElement(element) { - { - if (element) { - var stack = describeUnknownElementTypeFrameInDEV(element.type); - ReactSharedInternals.setExtraStackFrame(stack); - } else { - ReactSharedInternals.setExtraStackFrame(null); - } - } + childOwner = " It was passed a child from " + ownerName + "."; } - function getCurrentComponentErrorInfo(parentType) { - { - var info = getDeclarationErrorAddendum(); + setCurrentlyValidatingElement(element); - if (!info) { - var parentName = getComponentNameFromType(parentType); + error('Each child in a list should have a unique "key" prop.' + '%s%s See https://react.dev/link/warning-keys for more information.', currentComponentErrorInfo, childOwner); - if (parentName) { - info = - "\n\nCheck the top-level render call using <" + parentName + ">."; - } - } + setCurrentlyValidatingElement(null); + } +} - return info; - } +function setCurrentlyValidatingElement(element) { + { + if (element) { + var stack = describeUnknownElementTypeFrameInDEV(element.type); + ReactSharedInternals.setExtraStackFrame(stack); + } else { + ReactSharedInternals.setExtraStackFrame(null); } - /** - * Given a fragment, validate that it can only be provided with fragment props - * @param {ReactElement} fragment - */ - - function validateFragmentProps(fragment) { - // TODO: Move this to render phase instead of at element creation. - { - var keys = Object.keys(fragment.props); + } +} - for (var i = 0; i < keys.length; i++) { - var key = keys[i]; +function getCurrentComponentErrorInfo(parentType) { + { + var info = getDeclarationErrorAddendum(); - if (key !== "children" && key !== "key") { - setCurrentlyValidatingElement(fragment); + if (!info) { + var parentName = getComponentNameFromType(parentType); - error( - "Invalid prop `%s` supplied to `React.Fragment`. " + - "React.Fragment can only have `key` and `children` props.", - key - ); + if (parentName) { + info = "\n\nCheck the top-level render call using <" + parentName + ">."; + } + } - setCurrentlyValidatingElement(null); - break; - } - } + return info; + } +} +/** + * Given a fragment, validate that it can only be provided with fragment props + * @param {ReactElement} fragment + */ - if (fragment.ref !== null) { - setCurrentlyValidatingElement(fragment); - error("Invalid attribute `ref` supplied to `React.Fragment`."); +function validateFragmentProps(fragment) { + // TODO: Move this to render phase instead of at element creation. + { + var keys = Object.keys(fragment.props); - setCurrentlyValidatingElement(null); - } - } - } + for (var i = 0; i < keys.length; i++) { + var key = keys[i]; - function coerceStringRef(mixedRef, owner, type) { - var stringRef; + if (key !== 'children' && key !== 'key') { + setCurrentlyValidatingElement(fragment); - if (typeof mixedRef === "string") { - stringRef = mixedRef; - } else { - if (typeof mixedRef === "number" || typeof mixedRef === "boolean") { - { - checkPropStringCoercion(mixedRef, "ref"); - } + error('Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key); - stringRef = "" + mixedRef; - } else { - return mixedRef; - } + setCurrentlyValidatingElement(null); + break; } + } - var callback = stringRefAsCallbackRef.bind(null, stringRef, type, owner); // This is used to check whether two callback refs conceptually represent - // the same string ref, and can therefore be reused by the reconciler. Needed - // for backwards compatibility with old Meta code that relies on string refs - // not being reattached on every render. + if (fragment.ref !== null) { + setCurrentlyValidatingElement(fragment); - callback.__stringRef = stringRef; - callback.__type = type; - callback.__owner = owner; - return callback; + error('Invalid attribute `ref` supplied to `React.Fragment`.'); + + setCurrentlyValidatingElement(null); } + } +} - function stringRefAsCallbackRef(stringRef, type, owner, value) { - if (!owner) { - throw new Error( - "Element ref was specified as a string (" + - stringRef + - ") but no owner was set. This could happen for one of" + - " the following reasons:\n" + - "1. You may be adding a ref to a function component\n" + - "2. You may be adding a ref to a component that was not created inside a component's render method\n" + - "3. You have multiple copies of React loaded\n" + - "See https://react.dev/link/refs-must-have-owner for more information." - ); - } +function coerceStringRef(mixedRef, owner, type) { - if (owner.tag !== ClassComponent) { - throw new Error( - "Function components cannot have string refs. " + - "We recommend using useRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref" - ); - } + var stringRef; + if (typeof mixedRef === 'string') { + stringRef = mixedRef; + } else { + if (typeof mixedRef === 'number' || typeof mixedRef === 'boolean') { { - if ( - // Will already warn with "Function components cannot be given refs" - !(typeof type === "function" && !isReactClass(type)) - ) { - var componentName = getComponentNameFromFiber(owner) || "Component"; - - if (!didWarnAboutStringRefs[componentName]) { - error( - 'Component "%s" contains the string ref "%s". Support for string refs ' + - "will be removed in a future major release. We recommend using " + - "useRef() or createRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref", - componentName, - stringRef - ); - - didWarnAboutStringRefs[componentName] = true; - } - } + checkPropStringCoercion(mixedRef, 'ref'); } - var inst = owner.stateNode; + stringRef = '' + mixedRef; + } else { + return mixedRef; + } + } - if (!inst) { - throw new Error( - "Missing owner for string ref " + - stringRef + - ". This error is likely caused by a " + - "bug in React. Please file an issue." - ); - } + var callback = stringRefAsCallbackRef.bind(null, stringRef, type, owner); // This is used to check whether two callback refs conceptually represent + // the same string ref, and can therefore be reused by the reconciler. Needed + // for backwards compatibility with old Meta code that relies on string refs + // not being reattached on every render. + + callback.__stringRef = stringRef; + callback.__type = type; + callback.__owner = owner; + return callback; +} - var refs = inst.refs; +function stringRefAsCallbackRef(stringRef, type, owner, value) { - if (value === null) { - delete refs[stringRef]; - } else { - refs[stringRef] = value; + if (!owner) { + throw new Error("Element ref was specified as a string (" + stringRef + ") but no owner was set. This could happen for one of" + ' the following reasons:\n' + '1. You may be adding a ref to a function component\n' + "2. You may be adding a ref to a component that was not created inside a component's render method\n" + '3. You have multiple copies of React loaded\n' + 'See https://react.dev/link/refs-must-have-owner for more information.'); + } + + if (owner.tag !== ClassComponent) { + throw new Error('Function components cannot have string refs. ' + 'We recommend using useRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref'); + } + + { + if ( // Will already warn with "Function components cannot be given refs" + !(typeof type === 'function' && !isReactClass(type))) { + var componentName = getComponentNameFromFiber(owner) || 'Component'; + + if (!didWarnAboutStringRefs[componentName]) { + error('Component "%s" contains the string ref "%s". Support for string refs ' + 'will be removed in a future major release. We recommend using ' + 'useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref', componentName, stringRef); + + didWarnAboutStringRefs[componentName] = true; } } + } - function isReactClass(type) { - return type.prototype && type.prototype.isReactComponent; - } + var inst = owner.stateNode; + + if (!inst) { + throw new Error("Missing owner for string ref " + stringRef + ". This error is likely caused by a " + 'bug in React. Please file an issue.'); + } + + var refs = inst.refs; + + if (value === null) { + delete refs[stringRef]; + } else { + refs[stringRef] = value; + } +} + +function isReactClass(type) { + return type.prototype && type.prototype.isReactComponent; +} - var jsx = jsxProdSignatureRunningInDevWithDynamicChildren; // we may want to special case jsxs internally to take advantage of static children. - // for now we can ship identical prod functions +var jsx = jsxProdSignatureRunningInDevWithDynamicChildren ; // we may want to special case jsxs internally to take advantage of static children. +// for now we can ship identical prod functions - var jsxs = jsxProdSignatureRunningInDevWithStaticChildren; +var jsxs = jsxProdSignatureRunningInDevWithStaticChildren ; - exports.Fragment = REACT_FRAGMENT_TYPE; - exports.jsx = jsx; - exports.jsxs = jsxs; +exports.Fragment = REACT_FRAGMENT_TYPE; +exports.jsx = jsx; +exports.jsxs = jsxs; })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js index e6ce3bb8a1614..7d765da45b958 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js +++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/react/cjs/React-dev.js @@ -7,3870 +7,3419 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<<150980e4b77b12c241c9997159b4f67a>> + * @generated SignedSource<<1ccd58cd787da0b40cbf5543503953db>> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; - - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); - } - var dynamicFlagsUntyped = require("ReactNativeInternalFeatureFlags"); - - var ReactVersion = "19.0.0-canary-a13a0c2f"; - - // ATTENTION - // When adding new symbols to this file, - // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' - // The Symbol used to tag the ReactElement-like types. - var REACT_ELEMENT_TYPE = Symbol.for("react.element"); - var REACT_PORTAL_TYPE = Symbol.for("react.portal"); - var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); - var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); - var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); - var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); // TODO: Delete with enableRenderableContext - - var REACT_CONSUMER_TYPE = Symbol.for("react.consumer"); - var REACT_CONTEXT_TYPE = Symbol.for("react.context"); - var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); - var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); - var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); - var REACT_MEMO_TYPE = Symbol.for("react.memo"); - var REACT_LAZY_TYPE = Symbol.for("react.lazy"); - var REACT_SCOPE_TYPE = Symbol.for("react.scope"); - var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for("react.debug_trace_mode"); - var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); - var REACT_LEGACY_HIDDEN_TYPE = Symbol.for("react.legacy_hidden"); - var REACT_TRACING_MARKER_TYPE = Symbol.for("react.tracing_marker"); - var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; - var FAUX_ITERATOR_SYMBOL = "@@iterator"; - function getIteratorFn(maybeIterable) { - if (maybeIterable === null || typeof maybeIterable !== "object") { - return null; - } - - var maybeIterator = - (MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) || - maybeIterable[FAUX_ITERATOR_SYMBOL]; - - if (typeof maybeIterator === "function") { - return maybeIterator; - } + (function() { - return null; - } + 'use strict'; - // Re-export dynamic flags from the internal module. - var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on - // the exports object every time a flag is read. - - var enableAsyncActions = dynamicFlags.enableAsyncActions, - enableComponentStackLocations = - dynamicFlags.enableComponentStackLocations, - enableRenderableContext = dynamicFlags.enableRenderableContext, - disableDefaultPropsExceptForClasses = - dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. - var enableDebugTracing = false; - var enableScopeAPI = false; - var enableLegacyHidden = false; - var enableTransitionTracing = false; - // because JSX is an extremely hot path. - - var enableRefAsProp = false; - var disableLegacyMode = false; - - var ReactSharedInternals = { - H: null, - C: null, - T: null - }; +/* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); +} + var dynamicFlagsUntyped = require('ReactNativeInternalFeatureFlags'); + +var ReactVersion = '19.0.0-canary-c627bf44'; + +// ATTENTION +// When adding new symbols to this file, +// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' +// The Symbol used to tag the ReactElement-like types. +var REACT_ELEMENT_TYPE = Symbol.for('react.element'); +var REACT_PORTAL_TYPE = Symbol.for('react.portal'); +var REACT_FRAGMENT_TYPE = Symbol.for('react.fragment'); +var REACT_STRICT_MODE_TYPE = Symbol.for('react.strict_mode'); +var REACT_PROFILER_TYPE = Symbol.for('react.profiler'); +var REACT_PROVIDER_TYPE = Symbol.for('react.provider'); // TODO: Delete with enableRenderableContext + +var REACT_CONSUMER_TYPE = Symbol.for('react.consumer'); +var REACT_CONTEXT_TYPE = Symbol.for('react.context'); +var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref'); +var REACT_SUSPENSE_TYPE = Symbol.for('react.suspense'); +var REACT_SUSPENSE_LIST_TYPE = Symbol.for('react.suspense_list'); +var REACT_MEMO_TYPE = Symbol.for('react.memo'); +var REACT_LAZY_TYPE = Symbol.for('react.lazy'); +var REACT_SCOPE_TYPE = Symbol.for('react.scope'); +var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for('react.debug_trace_mode'); +var REACT_OFFSCREEN_TYPE = Symbol.for('react.offscreen'); +var REACT_LEGACY_HIDDEN_TYPE = Symbol.for('react.legacy_hidden'); +var REACT_TRACING_MARKER_TYPE = Symbol.for('react.tracing_marker'); +var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; +var FAUX_ITERATOR_SYMBOL = '@@iterator'; +function getIteratorFn(maybeIterable) { + if (maybeIterable === null || typeof maybeIterable !== 'object') { + return null; + } + + var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]; + + if (typeof maybeIterator === 'function') { + return maybeIterator; + } + + return null; +} - { - ReactSharedInternals.owner = null; - } +// Re-export dynamic flags from the internal module. +var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on +// the exports object every time a flag is read. + +var enableAsyncActions = dynamicFlags.enableAsyncActions, + enableComponentStackLocations = dynamicFlags.enableComponentStackLocations, + enableRenderableContext = dynamicFlags.enableRenderableContext, + disableDefaultPropsExceptForClasses = dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. +var enableDebugTracing = false; +var enableScopeAPI = false; +var enableLegacyHidden = false; +var enableTransitionTracing = false; +// because JSX is an extremely hot path. + +var enableRefAsProp = false; +var disableLegacyMode = false; + +var ReactSharedInternals = { + H: null, + C: null, + T: null +}; + +{ + ReactSharedInternals.owner = null; +} - { - ReactSharedInternals.actQueue = null; - ReactSharedInternals.isBatchingLegacy = false; - ReactSharedInternals.didScheduleLegacyUpdate = false; - ReactSharedInternals.didUsePromise = false; - ReactSharedInternals.thrownErrors = []; - var currentExtraStackFrame = null; +{ + ReactSharedInternals.actQueue = null; + ReactSharedInternals.isBatchingLegacy = false; + ReactSharedInternals.didScheduleLegacyUpdate = false; + ReactSharedInternals.didUsePromise = false; + ReactSharedInternals.thrownErrors = []; + var currentExtraStackFrame = null; - ReactSharedInternals.setExtraStackFrame = function (stack) { - currentExtraStackFrame = stack; - }; // Stack implementation injected by the current renderer. + ReactSharedInternals.setExtraStackFrame = function (stack) { + currentExtraStackFrame = stack; + }; // Stack implementation injected by the current renderer. - ReactSharedInternals.getCurrentStack = null; - ReactSharedInternals.getStackAddendum = function () { - var stack = ""; // Add an extra top frame while an element is being validated + ReactSharedInternals.getCurrentStack = null; - if (currentExtraStackFrame) { - stack += currentExtraStackFrame; - } // Delegate to the injected renderer-specific implementation + ReactSharedInternals.getStackAddendum = function () { + var stack = ''; // Add an extra top frame while an element is being validated - var impl = ReactSharedInternals.getCurrentStack; + if (currentExtraStackFrame) { + stack += currentExtraStackFrame; + } // Delegate to the injected renderer-specific implementation - if (impl) { - stack += impl() || ""; - } - return stack; - }; + var impl = ReactSharedInternals.getCurrentStack; + + if (impl) { + stack += impl() || ''; } - // by calls to these methods by a Babel plugin. - // - // In PROD (or in packages without access to React internals), - // they are left as they are instead. + return stack; + }; +} - function warn(format) { - { - { - for ( - var _len = arguments.length, - args = new Array(_len > 1 ? _len - 1 : 0), - _key = 1; - _key < _len; - _key++ - ) { - args[_key - 1] = arguments[_key]; - } +// by calls to these methods by a Babel plugin. +// +// In PROD (or in packages without access to React internals), +// they are left as they are instead. - printWarning("warn", format, args); - } +function warn(format) { + { + { + for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; } - } - function error(format) { - { - { - for ( - var _len2 = arguments.length, - args = new Array(_len2 > 1 ? _len2 - 1 : 0), - _key2 = 1; - _key2 < _len2; - _key2++ - ) { - args[_key2 - 1] = arguments[_key2]; - } - printWarning("error", format, args); - } - } + printWarning('warn', format, args); } - - function printWarning(level, format, args) { - // When changing this logic, you might want to also - // update consoleWithStackDev.www.js as well. - { - var stack = ReactSharedInternals.getStackAddendum(); - - if (stack !== "") { - format += "%s"; - args = args.concat([stack]); - } // eslint-disable-next-line react-internal/safe-string-coercion - - var argsWithFormat = args.map(function (item) { - return String(item); - }); // Careful: RN currently depends on this prefix - - argsWithFormat.unshift("Warning: " + format); // We intentionally don't use spread (or .apply) directly because it - // breaks IE9: https://github.com/facebook/react/issues/13610 - // eslint-disable-next-line react-internal/no-production-logging - - Function.prototype.apply.call(console[level], console, argsWithFormat); + } +} +function error(format) { + { + { + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + args[_key2 - 1] = arguments[_key2]; } - } - - var didWarnStateUpdateForUnmountedComponent = {}; - - function warnNoop(publicInstance, callerName) { - { - var _constructor = publicInstance.constructor; - var componentName = - (_constructor && (_constructor.displayName || _constructor.name)) || - "ReactClass"; - var warningKey = componentName + "." + callerName; - - if (didWarnStateUpdateForUnmountedComponent[warningKey]) { - return; - } - - error( - "Can't call %s on a component that is not yet mounted. " + - "This is a no-op, but it might indicate a bug in your application. " + - "Instead, assign to `this.state` directly or define a `state = {};` " + - "class property with the desired state in the %s component.", - callerName, - componentName - ); - - didWarnStateUpdateForUnmountedComponent[warningKey] = true; - } - } - /** - * This is the abstract API for an update queue. - */ - - var ReactNoopUpdateQueue = { - /** - * Checks whether or not this composite component is mounted. - * @param {ReactClass} publicInstance The instance we want to test. - * @return {boolean} True if mounted, false otherwise. - * @protected - * @final - */ - isMounted: function (publicInstance) { - return false; - }, - /** - * Forces an update. This should only be invoked when it is known with - * certainty that we are **not** in a DOM transaction. - * - * You may want to call this when you know that some deeper aspect of the - * component's state has changed but `setState` was not called. - * - * This will not invoke `shouldComponentUpdate`, but it will invoke - * `componentWillUpdate` and `componentDidUpdate`. - * - * @param {ReactClass} publicInstance The instance that should rerender. - * @param {?function} callback Called after component is updated. - * @param {?string} callerName name of the calling function in the public API. - * @internal - */ - enqueueForceUpdate: function (publicInstance, callback, callerName) { - warnNoop(publicInstance, "forceUpdate"); - }, + printWarning('error', format, args); + } + } +} - /** - * Replaces all of the state. Always use this or `setState` to mutate state. - * You should treat `this.state` as immutable. - * - * There is no guarantee that `this.state` will be immediately updated, so - * accessing `this.state` after calling this method may return the old value. - * - * @param {ReactClass} publicInstance The instance that should rerender. - * @param {object} completeState Next state. - * @param {?function} callback Called after component is updated. - * @param {?string} callerName name of the calling function in the public API. - * @internal - */ - enqueueReplaceState: function ( - publicInstance, - completeState, - callback, - callerName - ) { - warnNoop(publicInstance, "replaceState"); - }, +function printWarning(level, format, args) { + // When changing this logic, you might want to also + // update consoleWithStackDev.www.js as well. + { + var stack = ReactSharedInternals.getStackAddendum(); - /** - * Sets a subset of the state. This only exists because _pendingState is - * internal. This provides a merging strategy that is not available to deep - * properties which is confusing. TODO: Expose pendingState or don't use it - * during the merge. - * - * @param {ReactClass} publicInstance The instance that should rerender. - * @param {object} partialState Next partial state to be merged with state. - * @param {?function} callback Called after component is updated. - * @param {?string} Name of the calling function in the public API. - * @internal - */ - enqueueSetState: function ( - publicInstance, - partialState, - callback, - callerName - ) { - warnNoop(publicInstance, "setState"); - } - }; + if (stack !== '') { + format += '%s'; + args = args.concat([stack]); + } // eslint-disable-next-line react-internal/safe-string-coercion - var assign = Object.assign; - var emptyObject = {}; + var argsWithFormat = args.map(function (item) { + return String(item); + }); // Careful: RN currently depends on this prefix - { - Object.freeze(emptyObject); - } - /** - * Base class helpers for the updating state of a component. - */ - - function Component(props, context, updater) { - this.props = props; - this.context = context; // If a component has string refs, we will assign a different object later. - - this.refs = emptyObject; // We initialize the default updater but the real one gets injected by the - // renderer. - - this.updater = updater || ReactNoopUpdateQueue; - } - - Component.prototype.isReactComponent = {}; - /** - * Sets a subset of the state. Always use this to mutate - * state. You should treat `this.state` as immutable. - * - * There is no guarantee that `this.state` will be immediately updated, so - * accessing `this.state` after calling this method may return the old value. - * - * There is no guarantee that calls to `setState` will run synchronously, - * as they may eventually be batched together. You can provide an optional - * callback that will be executed when the call to setState is actually - * completed. - * - * When a function is provided to setState, it will be called at some point in - * the future (not synchronously). It will be called with the up to date - * component arguments (state, props, context). These values can be different - * from this.* because your function may be called after receiveProps but before - * shouldComponentUpdate, and this new state, props, and context will not yet be - * assigned to this. - * - * @param {object|function} partialState Next partial state or function to - * produce next partial state to be merged with current state. - * @param {?function} callback Called after state is updated. - * @final - * @protected - */ - - Component.prototype.setState = function (partialState, callback) { - if ( - typeof partialState !== "object" && - typeof partialState !== "function" && - partialState != null - ) { - throw new Error( - "takes an object of state variables to update or a " + - "function which returns an object of state variables." - ); - } - - this.updater.enqueueSetState(this, partialState, callback, "setState"); - }; - /** - * Forces an update. This should only be invoked when it is known with - * certainty that we are **not** in a DOM transaction. - * - * You may want to call this when you know that some deeper aspect of the - * component's state has changed but `setState` was not called. - * - * This will not invoke `shouldComponentUpdate`, but it will invoke - * `componentWillUpdate` and `componentDidUpdate`. - * - * @param {?function} callback Called after update is complete. - * @final - * @protected - */ - - Component.prototype.forceUpdate = function (callback) { - this.updater.enqueueForceUpdate(this, callback, "forceUpdate"); - }; - /** - * Deprecated APIs. These APIs used to exist on classic React classes but since - * we would like to deprecate them, we're not going to move them over to this - * modern base class. Instead, we define a getter that warns if it's accessed. - */ + argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it + // breaks IE9: https://github.com/facebook/react/issues/13610 + // eslint-disable-next-line react-internal/no-production-logging - { - var deprecatedAPIs = { - isMounted: [ - "isMounted", - "Instead, make sure to clean up subscriptions and pending requests in " + - "componentWillUnmount to prevent memory leaks." - ], - replaceState: [ - "replaceState", - "Refactor your code to use setState instead (see " + - "https://github.com/facebook/react/issues/3236)." - ] - }; + Function.prototype.apply.call(console[level], console, argsWithFormat); + } +} - var defineDeprecationWarning = function (methodName, info) { - Object.defineProperty(Component.prototype, methodName, { - get: function () { - warn( - "%s(...) is deprecated in plain JavaScript React classes. %s", - info[0], - info[1] - ); +var didWarnStateUpdateForUnmountedComponent = {}; - return undefined; - } - }); - }; +function warnNoop(publicInstance, callerName) { + { + var _constructor = publicInstance.constructor; + var componentName = _constructor && (_constructor.displayName || _constructor.name) || 'ReactClass'; + var warningKey = componentName + "." + callerName; - for (var fnName in deprecatedAPIs) { - if (deprecatedAPIs.hasOwnProperty(fnName)) { - defineDeprecationWarning(fnName, deprecatedAPIs[fnName]); - } - } + if (didWarnStateUpdateForUnmountedComponent[warningKey]) { + return; } - function ComponentDummy() {} + error("Can't call %s on a component that is not yet mounted. " + 'This is a no-op, but it might indicate a bug in your application. ' + 'Instead, assign to `this.state` directly or define a `state = {};` ' + 'class property with the desired state in the %s component.', callerName, componentName); - ComponentDummy.prototype = Component.prototype; - /** - * Convenience component with default shallow equality check for sCU. - */ + didWarnStateUpdateForUnmountedComponent[warningKey] = true; + } +} +/** + * This is the abstract API for an update queue. + */ - function PureComponent(props, context, updater) { - this.props = props; - this.context = context; // If a component has string refs, we will assign a different object later. - this.refs = emptyObject; - this.updater = updater || ReactNoopUpdateQueue; - } +var ReactNoopUpdateQueue = { + /** + * Checks whether or not this composite component is mounted. + * @param {ReactClass} publicInstance The instance we want to test. + * @return {boolean} True if mounted, false otherwise. + * @protected + * @final + */ + isMounted: function (publicInstance) { + return false; + }, + + /** + * Forces an update. This should only be invoked when it is known with + * certainty that we are **not** in a DOM transaction. + * + * You may want to call this when you know that some deeper aspect of the + * component's state has changed but `setState` was not called. + * + * This will not invoke `shouldComponentUpdate`, but it will invoke + * `componentWillUpdate` and `componentDidUpdate`. + * + * @param {ReactClass} publicInstance The instance that should rerender. + * @param {?function} callback Called after component is updated. + * @param {?string} callerName name of the calling function in the public API. + * @internal + */ + enqueueForceUpdate: function (publicInstance, callback, callerName) { + warnNoop(publicInstance, 'forceUpdate'); + }, + + /** + * Replaces all of the state. Always use this or `setState` to mutate state. + * You should treat `this.state` as immutable. + * + * There is no guarantee that `this.state` will be immediately updated, so + * accessing `this.state` after calling this method may return the old value. + * + * @param {ReactClass} publicInstance The instance that should rerender. + * @param {object} completeState Next state. + * @param {?function} callback Called after component is updated. + * @param {?string} callerName name of the calling function in the public API. + * @internal + */ + enqueueReplaceState: function (publicInstance, completeState, callback, callerName) { + warnNoop(publicInstance, 'replaceState'); + }, + + /** + * Sets a subset of the state. This only exists because _pendingState is + * internal. This provides a merging strategy that is not available to deep + * properties which is confusing. TODO: Expose pendingState or don't use it + * during the merge. + * + * @param {ReactClass} publicInstance The instance that should rerender. + * @param {object} partialState Next partial state to be merged with state. + * @param {?function} callback Called after component is updated. + * @param {?string} Name of the calling function in the public API. + * @internal + */ + enqueueSetState: function (publicInstance, partialState, callback, callerName) { + warnNoop(publicInstance, 'setState'); + } +}; + +var assign = Object.assign; + +var emptyObject = {}; + +{ + Object.freeze(emptyObject); +} +/** + * Base class helpers for the updating state of a component. + */ - var pureComponentPrototype = (PureComponent.prototype = - new ComponentDummy()); - pureComponentPrototype.constructor = PureComponent; // Avoid an extra prototype jump for these methods. - assign(pureComponentPrototype, Component.prototype); - pureComponentPrototype.isPureReactComponent = true; +function Component(props, context, updater) { + this.props = props; + this.context = context; // If a component has string refs, we will assign a different object later. - // an immutable object with a single mutable value - function createRef() { - var refObject = { - current: null - }; + this.refs = emptyObject; // We initialize the default updater but the real one gets injected by the + // renderer. - { - Object.seal(refObject); - } + this.updater = updater || ReactNoopUpdateQueue; +} - return refObject; - } +Component.prototype.isReactComponent = {}; +/** + * Sets a subset of the state. Always use this to mutate + * state. You should treat `this.state` as immutable. + * + * There is no guarantee that `this.state` will be immediately updated, so + * accessing `this.state` after calling this method may return the old value. + * + * There is no guarantee that calls to `setState` will run synchronously, + * as they may eventually be batched together. You can provide an optional + * callback that will be executed when the call to setState is actually + * completed. + * + * When a function is provided to setState, it will be called at some point in + * the future (not synchronously). It will be called with the up to date + * component arguments (state, props, context). These values can be different + * from this.* because your function may be called after receiveProps but before + * shouldComponentUpdate, and this new state, props, and context will not yet be + * assigned to this. + * + * @param {object|function} partialState Next partial state or function to + * produce next partial state to be merged with current state. + * @param {?function} callback Called after state is updated. + * @final + * @protected + */ - var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare +Component.prototype.setState = function (partialState, callback) { + if (typeof partialState !== 'object' && typeof partialState !== 'function' && partialState != null) { + throw new Error('takes an object of state variables to update or a ' + 'function which returns an object of state variables.'); + } - function isArray(a) { - return isArrayImpl(a); - } + this.updater.enqueueSetState(this, partialState, callback, 'setState'); +}; +/** + * Forces an update. This should only be invoked when it is known with + * certainty that we are **not** in a DOM transaction. + * + * You may want to call this when you know that some deeper aspect of the + * component's state has changed but `setState` was not called. + * + * This will not invoke `shouldComponentUpdate`, but it will invoke + * `componentWillUpdate` and `componentDidUpdate`. + * + * @param {?function} callback Called after update is complete. + * @final + * @protected + */ - /* - * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol - * and Temporal.* types. See https://github.com/facebook/react/pull/22064. - * - * The functions in this module will throw an easier-to-understand, - * easier-to-debug exception with a clear errors message message explaining the - * problem. (Instead of a confusing exception thrown inside the implementation - * of the `value` object). - */ - // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. - function typeName(value) { - { - // toStringTag is needed for namespaced types like Temporal.Instant - var hasToStringTag = typeof Symbol === "function" && Symbol.toStringTag; - var type = - (hasToStringTag && value[Symbol.toStringTag]) || - value.constructor.name || - "Object"; // $FlowFixMe[incompatible-return] - return type; - } - } // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +Component.prototype.forceUpdate = function (callback) { + this.updater.enqueueForceUpdate(this, callback, 'forceUpdate'); +}; +/** + * Deprecated APIs. These APIs used to exist on classic React classes but since + * we would like to deprecate them, we're not going to move them over to this + * modern base class. Instead, we define a getter that warns if it's accessed. + */ - function willCoercionThrow(value) { - { - try { - testStringCoercion(value); - return false; - } catch (e) { - return true; - } - } - } - function testStringCoercion(value) { - // If you ended up here by following an exception call stack, here's what's - // happened: you supplied an object or symbol value to React (as a prop, key, - // DOM attribute, CSS property, string ref, etc.) and when React tried to - // coerce it to a string using `'' + value`, an exception was thrown. - // - // The most common types that will cause this exception are `Symbol` instances - // and Temporal objects like `Temporal.Instant`. But any object that has a - // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this - // exception. (Library authors do this to prevent users from using built-in - // numeric operators like `+` or comparison operators like `>=` because custom - // methods are needed to perform accurate arithmetic or comparison.) - // - // To fix the problem, coerce this object or symbol value to a string before - // passing it to React. The most reliable way is usually `String(value)`. - // - // To find which value is throwing, check the browser or debugger console. - // Before this exception was thrown, there should be `console.error` output - // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the - // problem and how that type was used: key, atrribute, input value prop, etc. - // In most cases, this console output also shows the component and its - // ancestor components where the exception happened. - // - // eslint-disable-next-line react-internal/safe-string-coercion - return "" + value; - } - function checkKeyStringCoercion(value) { - { - if (willCoercionThrow(value)) { - error( - "The provided key is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - typeName(value) - ); - - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } - } - function checkPropStringCoercion(value, propName) { - { - if (willCoercionThrow(value)) { - error( - "The provided `%s` prop is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - propName, - typeName(value) - ); - - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } - } +{ + var deprecatedAPIs = { + isMounted: ['isMounted', 'Instead, make sure to clean up subscriptions and pending requests in ' + 'componentWillUnmount to prevent memory leaks.'], + replaceState: ['replaceState', 'Refactor your code to use setState instead (see ' + 'https://github.com/facebook/react/issues/3236).'] + }; - function getWrappedName$1(outerType, innerType, wrapperName) { - var displayName = outerType.displayName; + var defineDeprecationWarning = function (methodName, info) { + Object.defineProperty(Component.prototype, methodName, { + get: function () { + warn('%s(...) is deprecated in plain JavaScript React classes. %s', info[0], info[1]); - if (displayName) { - return displayName; + return undefined; } + }); + }; - var functionName = innerType.displayName || innerType.name || ""; - return functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName; - } // Keep in sync with react-reconciler/getComponentNameFromFiber - - function getContextName$1(type) { - return type.displayName || "Context"; + for (var fnName in deprecatedAPIs) { + if (deprecatedAPIs.hasOwnProperty(fnName)) { + defineDeprecationWarning(fnName, deprecatedAPIs[fnName]); } + } +} - var REACT_CLIENT_REFERENCE$2 = Symbol.for("react.client.reference"); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. +function ComponentDummy() {} - function getComponentNameFromType(type) { - if (type == null) { - // Host root, text node or just invalid type. - return null; - } +ComponentDummy.prototype = Component.prototype; +/** + * Convenience component with default shallow equality check for sCU. + */ - if (typeof type === "function") { - if (type.$$typeof === REACT_CLIENT_REFERENCE$2) { - // TODO: Create a convention for naming client references with debug info. - return null; - } +function PureComponent(props, context, updater) { + this.props = props; + this.context = context; // If a component has string refs, we will assign a different object later. - return type.displayName || type.name || null; - } + this.refs = emptyObject; + this.updater = updater || ReactNoopUpdateQueue; +} - if (typeof type === "string") { - return type; - } +var pureComponentPrototype = PureComponent.prototype = new ComponentDummy(); +pureComponentPrototype.constructor = PureComponent; // Avoid an extra prototype jump for these methods. - switch (type) { - case REACT_FRAGMENT_TYPE: - return "Fragment"; +assign(pureComponentPrototype, Component.prototype); +pureComponentPrototype.isPureReactComponent = true; - case REACT_PORTAL_TYPE: - return "Portal"; +// an immutable object with a single mutable value +function createRef() { + var refObject = { + current: null + }; - case REACT_PROFILER_TYPE: - return "Profiler"; + { + Object.seal(refObject); + } - case REACT_STRICT_MODE_TYPE: - return "StrictMode"; + return refObject; +} - case REACT_SUSPENSE_TYPE: - return "Suspense"; +var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare - case REACT_SUSPENSE_LIST_TYPE: - return "SuspenseList"; - } +function isArray(a) { + return isArrayImpl(a); +} - if (typeof type === "object") { - { - if (typeof type.tag === "number") { - error( - "Received an unexpected object in getComponentNameFromType(). " + - "This is likely a bug in React. Please file an issue." - ); - } - } +/* + * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol + * and Temporal.* types. See https://github.com/facebook/react/pull/22064. + * + * The functions in this module will throw an easier-to-understand, + * easier-to-debug exception with a clear errors message message explaining the + * problem. (Instead of a confusing exception thrown inside the implementation + * of the `value` object). + */ +// $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +function typeName(value) { + { + // toStringTag is needed for namespaced types like Temporal.Instant + var hasToStringTag = typeof Symbol === 'function' && Symbol.toStringTag; + var type = hasToStringTag && value[Symbol.toStringTag] || value.constructor.name || 'Object'; // $FlowFixMe[incompatible-return] + + return type; + } +} // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + + +function willCoercionThrow(value) { + { + try { + testStringCoercion(value); + return false; + } catch (e) { + return true; + } + } +} - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: - if (enableRenderableContext) { - return null; - } else { - var provider = type; - return getContextName$1(provider._context) + ".Provider"; - } +function testStringCoercion(value) { + // If you ended up here by following an exception call stack, here's what's + // happened: you supplied an object or symbol value to React (as a prop, key, + // DOM attribute, CSS property, string ref, etc.) and when React tried to + // coerce it to a string using `'' + value`, an exception was thrown. + // + // The most common types that will cause this exception are `Symbol` instances + // and Temporal objects like `Temporal.Instant`. But any object that has a + // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this + // exception. (Library authors do this to prevent users from using built-in + // numeric operators like `+` or comparison operators like `>=` because custom + // methods are needed to perform accurate arithmetic or comparison.) + // + // To fix the problem, coerce this object or symbol value to a string before + // passing it to React. The most reliable way is usually `String(value)`. + // + // To find which value is throwing, check the browser or debugger console. + // Before this exception was thrown, there should be `console.error` output + // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the + // problem and how that type was used: key, atrribute, input value prop, etc. + // In most cases, this console output also shows the component and its + // ancestor components where the exception happened. + // + // eslint-disable-next-line react-internal/safe-string-coercion + return '' + value; +} +function checkKeyStringCoercion(value) { + { + if (willCoercionThrow(value)) { + error('The provided key is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', typeName(value)); - case REACT_CONTEXT_TYPE: - var context = type; + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) + } + } +} +function checkPropStringCoercion(value, propName) { + { + if (willCoercionThrow(value)) { + error('The provided `%s` prop is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', propName, typeName(value)); - if (enableRenderableContext) { - return getContextName$1(context) + ".Provider"; - } else { - return getContextName$1(context) + ".Consumer"; - } + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) + } + } +} - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - var consumer = type; - return getContextName$1(consumer._context) + ".Consumer"; - } else { - return null; - } +function getWrappedName$1(outerType, innerType, wrapperName) { + var displayName = outerType.displayName; - case REACT_FORWARD_REF_TYPE: - return getWrappedName$1(type, type.render, "ForwardRef"); + if (displayName) { + return displayName; + } - case REACT_MEMO_TYPE: - var outerName = type.displayName || null; + var functionName = innerType.displayName || innerType.name || ''; + return functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName; +} // Keep in sync with react-reconciler/getComponentNameFromFiber - if (outerName !== null) { - return outerName; - } - return getComponentNameFromType(type.type) || "Memo"; +function getContextName$1(type) { + return type.displayName || 'Context'; +} - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; +var REACT_CLIENT_REFERENCE$2 = Symbol.for('react.client.reference'); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. - try { - return getComponentNameFromType(init(payload)); - } catch (x) { - return null; - } - } - } - } +function getComponentNameFromType(type) { + if (type == null) { + // Host root, text node or just invalid type. + return null; + } + if (typeof type === 'function') { + if (type.$$typeof === REACT_CLIENT_REFERENCE$2) { + // TODO: Create a convention for naming client references with debug info. return null; } - // $FlowFixMe[method-unbinding] - var hasOwnProperty = Object.prototype.hasOwnProperty; - - var REACT_CLIENT_REFERENCE$1 = Symbol.for("react.client.reference"); - function isValidElementType(type) { - if (typeof type === "string" || typeof type === "function") { - return true; - } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). - - if ( - type === REACT_FRAGMENT_TYPE || - type === REACT_PROFILER_TYPE || - enableDebugTracing || - type === REACT_STRICT_MODE_TYPE || - type === REACT_SUSPENSE_TYPE || - type === REACT_SUSPENSE_LIST_TYPE || - enableLegacyHidden || - type === REACT_OFFSCREEN_TYPE || - enableScopeAPI || - enableTransitionTracing - ) { - return true; - } - - if (typeof type === "object" && type !== null) { - if ( - type.$$typeof === REACT_LAZY_TYPE || - type.$$typeof === REACT_MEMO_TYPE || - type.$$typeof === REACT_CONTEXT_TYPE || - (!enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE) || - (enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE) || - type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object - // types supported by any Flight configuration anywhere since - // we don't know which Flight build this will end up being used - // with. - type.$$typeof === REACT_CLIENT_REFERENCE$1 || - type.getModuleId !== undefined - ) { - return true; - } - } + return type.displayName || type.name || null; + } - return false; - } + if (typeof type === 'string') { + return type; + } - // Helpers to patch console.logs to avoid logging during side-effect free - // replaying on render function. This currently only patches the object - // lazily which won't cover if the log function was extracted eagerly. - // We could also eagerly patch the method. - var disabledDepth = 0; - var prevLog; - var prevInfo; - var prevWarn; - var prevError; - var prevGroup; - var prevGroupCollapsed; - var prevGroupEnd; + switch (type) { + case REACT_FRAGMENT_TYPE: + return 'Fragment'; - function disabledLog() {} + case REACT_PORTAL_TYPE: + return 'Portal'; - disabledLog.__reactDisabledLog = true; - function disableLogs() { - { - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - prevLog = console.log; - prevInfo = console.info; - prevWarn = console.warn; - prevError = console.error; - prevGroup = console.group; - prevGroupCollapsed = console.groupCollapsed; - prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 - - var props = { - configurable: true, - enumerable: true, - value: disabledLog, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - info: props, - log: props, - warn: props, - error: props, - group: props, - groupCollapsed: props, - groupEnd: props - }); - /* eslint-enable react-internal/no-production-logging */ - } + case REACT_PROFILER_TYPE: + return 'Profiler'; - disabledDepth++; - } - } - function reenableLogs() { - { - disabledDepth--; - - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - var props = { - configurable: true, - enumerable: true, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - log: assign({}, props, { - value: prevLog - }), - info: assign({}, props, { - value: prevInfo - }), - warn: assign({}, props, { - value: prevWarn - }), - error: assign({}, props, { - value: prevError - }), - group: assign({}, props, { - value: prevGroup - }), - groupCollapsed: assign({}, props, { - value: prevGroupCollapsed - }), - groupEnd: assign({}, props, { - value: prevGroupEnd - }) - }); - /* eslint-enable react-internal/no-production-logging */ - } + case REACT_STRICT_MODE_TYPE: + return 'StrictMode'; - if (disabledDepth < 0) { - error( - "disabledDepth fell below zero. " + - "This is a bug in React. Please file an issue." - ); - } - } - } + case REACT_SUSPENSE_TYPE: + return 'Suspense'; - var prefix; - function describeBuiltInComponentFrame(name) { - if (enableComponentStackLocations) { - if (prefix === undefined) { - // Extract the VM specific prefix used by each line. - try { - throw Error(); - } catch (x) { - var match = x.stack.trim().match(/\n( *(at )?)/); - prefix = (match && match[1]) || ""; - } - } // We use the prefix to ensure our stacks line up with native stack frames. + case REACT_SUSPENSE_LIST_TYPE: + return 'SuspenseList'; - return "\n" + prefix + name; - } else { - return describeComponentFrame(name); - } - } - var reentry = false; - var componentFrameCache; + } + if (typeof type === 'object') { { - var PossiblyWeakMap = typeof WeakMap === "function" ? WeakMap : Map; - componentFrameCache = new PossiblyWeakMap(); - } - /** - * Leverages native browser/VM stack frames to get proper details (e.g. - * filename, line + col number) for a single component in a component stack. We - * do this by: - * (1) throwing and catching an error in the function - this will be our - * control error. - * (2) calling the component which will eventually throw an error that we'll - * catch - this will be our sample error. - * (3) diffing the control and sample error stacks to find the stack frame - * which represents our component. - */ - - function describeNativeComponentFrame(fn, construct) { - // If something asked for a stack inside a fake render, it should get ignored. - if (!fn || reentry) { - return ""; + if (typeof type.tag === 'number') { + error('Received an unexpected object in getComponentNameFromType(). ' + 'This is likely a bug in React. Please file an issue.'); } + } - { - var frame = componentFrameCache.get(fn); - - if (frame !== undefined) { - return frame; + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + if (enableRenderableContext) { + return null; + } else { + var provider = type; + return getContextName$1(provider._context) + '.Provider'; } - } - - reentry = true; - var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. - Error.prepareStackTrace = undefined; - var previousDispatcher = null; + case REACT_CONTEXT_TYPE: + var context = type; - { - previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function - // for warnings. - - ReactSharedInternals.H = null; - disableLogs(); - } - /** - * Finding a common stack frame between sample and control errors can be - * tricky given the different types and levels of stack trace truncation from - * different JS VMs. So instead we'll attempt to control what that common - * frame should be through this object method: - * Having both the sample and control errors be in the function under the - * `DescribeNativeComponentFrameRoot` property, + setting the `name` and - * `displayName` properties of the function ensures that a stack - * frame exists that has the method name `DescribeNativeComponentFrameRoot` in - * it for both control and sample stacks. - */ - - var RunInRootFrame = { - DetermineComponentFrameRoot: function () { - var control; + if (enableRenderableContext) { + return getContextName$1(context) + '.Provider'; + } else { + return getContextName$1(context) + '.Consumer'; + } - try { - // This should throw. - if (construct) { - // Something should be setting the props in the constructor. - var Fake = function () { - throw Error(); - }; // $FlowFixMe[prop-missing] - - Object.defineProperty(Fake.prototype, "props", { - set: function () { - // We use a throwing setter instead of frozen or non-writable props - // because that won't throw in a non-strict mode function. - throw Error(); - } - }); - - if (typeof Reflect === "object" && Reflect.construct) { - // We construct a different control for this case to include any extra - // frames added by the construct call. - try { - Reflect.construct(Fake, []); - } catch (x) { - control = x; - } + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + var consumer = type; + return getContextName$1(consumer._context) + '.Consumer'; + } else { + return null; + } - Reflect.construct(fn, [], Fake); - } else { - try { - Fake.call(); - } catch (x) { - control = x; - } // $FlowFixMe[prop-missing] found when upgrading Flow + case REACT_FORWARD_REF_TYPE: + return getWrappedName$1(type, type.render, 'ForwardRef'); - fn.call(Fake.prototype); - } - } else { - try { - throw Error(); - } catch (x) { - control = x; - } // TODO(luna): This will currently only throw if the function component - // tries to access React/ReactDOM/props. We should probably make this throw - // in simple components too - - var maybePromise = fn(); // If the function component returns a promise, it's likely an async - // component, which we don't yet support. Attach a noop catch handler to - // silence the error. - // TODO: Implement component stacks for async client components? - - if (maybePromise && typeof maybePromise.catch === "function") { - maybePromise.catch(function () {}); - } - } - } catch (sample) { - // This is inlined manually because closure doesn't do it for us. - if (sample && control && typeof sample.stack === "string") { - return [sample.stack, control.stack]; - } - } + case REACT_MEMO_TYPE: + var outerName = type.displayName || null; - return [null, null]; + if (outerName !== null) { + return outerName; } - }; // $FlowFixMe[prop-missing] - - RunInRootFrame.DetermineComponentFrameRoot.displayName = - "DetermineComponentFrameRoot"; - var namePropDescriptor = Object.getOwnPropertyDescriptor( - RunInRootFrame.DetermineComponentFrameRoot, - "name" - ); // Before ES6, the `name` property was not configurable. - - if (namePropDescriptor && namePropDescriptor.configurable) { - // V8 utilizes a function's `name` property when generating a stack trace. - Object.defineProperty( - RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor - // is set to `false`. - // $FlowFixMe[cannot-write] - "name", - { - value: "DetermineComponentFrameRoot" - } - ); - } - - try { - var _RunInRootFrame$Deter = - RunInRootFrame.DetermineComponentFrameRoot(), - sampleStack = _RunInRootFrame$Deter[0], - controlStack = _RunInRootFrame$Deter[1]; - - if (sampleStack && controlStack) { - // This extracts the first frame from the sample that isn't also in the control. - // Skipping one frame that we assume is the frame that calls the two. - var sampleLines = sampleStack.split("\n"); - var controlLines = controlStack.split("\n"); - var s = 0; - var c = 0; - - while ( - s < sampleLines.length && - !sampleLines[s].includes("DetermineComponentFrameRoot") - ) { - s++; - } - while ( - c < controlLines.length && - !controlLines[c].includes("DetermineComponentFrameRoot") - ) { - c++; - } // We couldn't find our intentionally injected common root frame, attempt - // to find another common root frame by search from the bottom of the - // control stack... - - if (s === sampleLines.length || c === controlLines.length) { - s = sampleLines.length - 1; - c = controlLines.length - 1; - - while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { - // We expect at least one stack frame to be shared. - // Typically this will be the root most one. However, stack frames may be - // cut off due to maximum stack limits. In this case, one maybe cut off - // earlier than the other. We assume that the sample is longer or the same - // and there for cut off earlier. So we should find the root most frame in - // the sample somewhere in the control. - c--; - } - } + return getComponentNameFromType(type.type) || 'Memo'; - for (; s >= 1 && c >= 0; s--, c--) { - // Next we find the first one that isn't the same which should be the - // frame that called our sample function and the control. - if (sampleLines[s] !== controlLines[c]) { - // In V8, the first line is describing the message but other VMs don't. - // If we're about to return the first line, and the control is also on the same - // line, that's a pretty good indicator that our sample threw at same line as - // the control. I.e. before we entered the sample frame. So we ignore this result. - // This can happen if you passed a class to function component, or non-function. - if (s !== 1 || c !== 1) { - do { - s--; - c--; // We may still have similar intermediate frames from the construct call. - // The next one that isn't the same should be our match though. - - if (c < 0 || sampleLines[s] !== controlLines[c]) { - // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. - var _frame = - "\n" + sampleLines[s].replace(" at new ", " at "); // If our component frame is labeled "" - // but we have a user-provided "displayName" - // splice it in to make the stack more readable. - - if (fn.displayName && _frame.includes("")) { - _frame = _frame.replace("", fn.displayName); - } - - if (true) { - if (typeof fn === "function") { - componentFrameCache.set(fn, _frame); - } - } // Return the line we found. - - return _frame; - } - } while (s >= 1 && c >= 0); - } + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; - break; - } + try { + return getComponentNameFromType(init(payload)); + } catch (x) { + return null; } } - } finally { - reentry = false; + } + } - { - ReactSharedInternals.H = previousDispatcher; - reenableLogs(); - } + return null; +} - Error.prepareStackTrace = previousPrepareStackTrace; - } // Fallback to just using the name if we couldn't make it throw. +// $FlowFixMe[method-unbinding] +var hasOwnProperty = Object.prototype.hasOwnProperty; - var name = fn ? fn.displayName || fn.name : ""; - var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ""; +var REACT_CLIENT_REFERENCE$1 = Symbol.for('react.client.reference'); +function isValidElementType(type) { + if (typeof type === 'string' || typeof type === 'function') { + return true; + } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill). - { - if (typeof fn === "function") { - componentFrameCache.set(fn, syntheticFrame); - } - } - return syntheticFrame; - } + if (type === REACT_FRAGMENT_TYPE || type === REACT_PROFILER_TYPE || enableDebugTracing || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || enableLegacyHidden || type === REACT_OFFSCREEN_TYPE || enableScopeAPI || enableTransitionTracing ) { + return true; + } - function describeComponentFrame(name) { - return "\n in " + (name || "Unknown"); + if (typeof type === 'object' && type !== null) { + if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || !enableRenderableContext && type.$$typeof === REACT_PROVIDER_TYPE || enableRenderableContext && type.$$typeof === REACT_CONSUMER_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || // This needs to include all possible module reference object + // types supported by any Flight configuration anywhere since + // we don't know which Flight build this will end up being used + // with. + type.$$typeof === REACT_CLIENT_REFERENCE$1 || type.getModuleId !== undefined) { + return true; } - function describeFunctionComponentFrame(fn) { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(fn, false); - } else { - if (!fn) { - return ""; - } + } - var name = fn.displayName || fn.name || null; - return describeComponentFrame(name); - } + return false; +} + +// Helpers to patch console.logs to avoid logging during side-effect free +// replaying on render function. This currently only patches the object +// lazily which won't cover if the log function was extracted eagerly. +// We could also eagerly patch the method. +var disabledDepth = 0; +var prevLog; +var prevInfo; +var prevWarn; +var prevError; +var prevGroup; +var prevGroupCollapsed; +var prevGroupEnd; + +function disabledLog() {} + +disabledLog.__reactDisabledLog = true; +function disableLogs() { + { + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + prevLog = console.log; + prevInfo = console.info; + prevWarn = console.warn; + prevError = console.error; + prevGroup = console.group; + prevGroupCollapsed = console.groupCollapsed; + prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 + + var props = { + configurable: true, + enumerable: true, + value: disabledLog, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + info: props, + log: props, + warn: props, + error: props, + group: props, + groupCollapsed: props, + groupEnd: props + }); + /* eslint-enable react-internal/no-production-logging */ } - function shouldConstruct(Component) { - var prototype = Component.prototype; - return !!(prototype && prototype.isReactComponent); + disabledDepth++; + } +} +function reenableLogs() { + { + disabledDepth--; + + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + var props = { + configurable: true, + enumerable: true, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + log: assign({}, props, { + value: prevLog + }), + info: assign({}, props, { + value: prevInfo + }), + warn: assign({}, props, { + value: prevWarn + }), + error: assign({}, props, { + value: prevError + }), + group: assign({}, props, { + value: prevGroup + }), + groupCollapsed: assign({}, props, { + value: prevGroupCollapsed + }), + groupEnd: assign({}, props, { + value: prevGroupEnd + }) + }); + /* eslint-enable react-internal/no-production-logging */ } - function describeUnknownElementTypeFrameInDEV(type) { - if (type == null) { - return ""; - } + if (disabledDepth < 0) { + error('disabledDepth fell below zero. ' + 'This is a bug in React. Please file an issue.'); + } + } +} - if (typeof type === "function") { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(type, shouldConstruct(type)); - } else { - return describeFunctionComponentFrame(type); - } +var prefix; +function describeBuiltInComponentFrame(name) { + if (enableComponentStackLocations) { + if (prefix === undefined) { + // Extract the VM specific prefix used by each line. + try { + throw Error(); + } catch (x) { + var match = x.stack.trim().match(/\n( *(at )?)/); + prefix = match && match[1] || ''; } + } // We use the prefix to ensure our stacks line up with native stack frames. - if (typeof type === "string") { - return describeBuiltInComponentFrame(type); - } - switch (type) { - case REACT_SUSPENSE_TYPE: - return describeBuiltInComponentFrame("Suspense"); + return '\n' + prefix + name; + } else { + return describeComponentFrame(name); + } +} +var reentry = false; +var componentFrameCache; - case REACT_SUSPENSE_LIST_TYPE: - return describeBuiltInComponentFrame("SuspenseList"); - } +{ + var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; + componentFrameCache = new PossiblyWeakMap(); +} +/** + * Leverages native browser/VM stack frames to get proper details (e.g. + * filename, line + col number) for a single component in a component stack. We + * do this by: + * (1) throwing and catching an error in the function - this will be our + * control error. + * (2) calling the component which will eventually throw an error that we'll + * catch - this will be our sample error. + * (3) diffing the control and sample error stacks to find the stack frame + * which represents our component. + */ - if (typeof type === "object") { - switch (type.$$typeof) { - case REACT_FORWARD_REF_TYPE: - return describeFunctionComponentFrame(type.render); - case REACT_MEMO_TYPE: - // Memo may contain any component type so we recursively resolve it. - return describeUnknownElementTypeFrameInDEV(type.type); +function describeNativeComponentFrame(fn, construct) { + // If something asked for a stack inside a fake render, it should get ignored. + if (!fn || reentry) { + return ''; + } - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; + { + var frame = componentFrameCache.get(fn); - try { - // Lazy may contain any component type so we recursively resolve it. - return describeUnknownElementTypeFrameInDEV(init(payload)); - } catch (x) {} - } - } - } + if (frame !== undefined) { + return frame; + } + } - return ""; - } - - var FunctionComponent = 0; - var ClassComponent = 1; - var HostRoot = 3; // Root of a host tree. Could be nested inside another node. - - var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. - - var HostComponent = 5; - var HostText = 6; - var Fragment = 7; - var Mode = 8; - var ContextConsumer = 9; - var ContextProvider = 10; - var ForwardRef = 11; - var Profiler = 12; - var SuspenseComponent = 13; - var MemoComponent = 14; - var SimpleMemoComponent = 15; - var LazyComponent = 16; - var IncompleteClassComponent = 17; - var DehydratedFragment = 18; - var SuspenseListComponent = 19; - var ScopeComponent = 21; - var OffscreenComponent = 22; - var CacheComponent = 24; - var TracingMarkerComponent = 25; - var HostHoistable = 26; - var HostSingleton = 27; - var IncompleteFunctionComponent = 28; - - function getWrappedName(outerType, innerType, wrapperName) { - var functionName = innerType.displayName || innerType.name || ""; - return ( - outerType.displayName || - (functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName) - ); - } // Keep in sync with shared/getComponentNameFromType - - function getContextName(type) { - return type.displayName || "Context"; - } - function getComponentNameFromFiber(fiber) { - var tag = fiber.tag, - type = fiber.type; - - switch (tag) { - case CacheComponent: - return "Cache"; - - case ContextConsumer: - if (enableRenderableContext) { - var consumer = type; - return getContextName(consumer._context) + ".Consumer"; - } else { - var context = type; - return getContextName(context) + ".Consumer"; - } + reentry = true; + var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. - case ContextProvider: - if (enableRenderableContext) { - var _context = type; - return getContextName(_context) + ".Provider"; - } else { - var provider = type; - return getContextName(provider._context) + ".Provider"; - } + Error.prepareStackTrace = undefined; + var previousDispatcher = null; - case DehydratedFragment: - return "DehydratedFragment"; + { + previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function + // for warnings. - case ForwardRef: - return getWrappedName(type, type.render, "ForwardRef"); + ReactSharedInternals.H = null; + disableLogs(); + } + /** + * Finding a common stack frame between sample and control errors can be + * tricky given the different types and levels of stack trace truncation from + * different JS VMs. So instead we'll attempt to control what that common + * frame should be through this object method: + * Having both the sample and control errors be in the function under the + * `DescribeNativeComponentFrameRoot` property, + setting the `name` and + * `displayName` properties of the function ensures that a stack + * frame exists that has the method name `DescribeNativeComponentFrameRoot` in + * it for both control and sample stacks. + */ - case Fragment: - return "Fragment"; - case HostHoistable: - case HostSingleton: - case HostComponent: - // Host component type is the display name (e.g. "div", "View") - return type; + var RunInRootFrame = { + DetermineComponentFrameRoot: function () { + var control; - case HostPortal: - return "Portal"; + try { + // This should throw. + if (construct) { + // Something should be setting the props in the constructor. + var Fake = function () { + throw Error(); + }; // $FlowFixMe[prop-missing] - case HostRoot: - return "Root"; - case HostText: - return "Text"; + Object.defineProperty(Fake.prototype, 'props', { + set: function () { + // We use a throwing setter instead of frozen or non-writable props + // because that won't throw in a non-strict mode function. + throw Error(); + } + }); - case LazyComponent: - // Name comes from the type in this case; we don't have a tag. - return getComponentNameFromType(type); + if (typeof Reflect === 'object' && Reflect.construct) { + // We construct a different control for this case to include any extra + // frames added by the construct call. + try { + Reflect.construct(Fake, []); + } catch (x) { + control = x; + } - case Mode: - if (type === REACT_STRICT_MODE_TYPE) { - // Don't be less specific than shared/getComponentNameFromType - return "StrictMode"; - } - - return "Mode"; + Reflect.construct(fn, [], Fake); + } else { + try { + Fake.call(); + } catch (x) { + control = x; + } // $FlowFixMe[prop-missing] found when upgrading Flow - case OffscreenComponent: - return "Offscreen"; - case Profiler: - return "Profiler"; + fn.call(Fake.prototype); + } + } else { + try { + throw Error(); + } catch (x) { + control = x; + } // TODO(luna): This will currently only throw if the function component + // tries to access React/ReactDOM/props. We should probably make this throw + // in simple components too - case ScopeComponent: - return "Scope"; - case SuspenseComponent: - return "Suspense"; + var maybePromise = fn(); // If the function component returns a promise, it's likely an async + // component, which we don't yet support. Attach a noop catch handler to + // silence the error. + // TODO: Implement component stacks for async client components? - case SuspenseListComponent: - return "SuspenseList"; + if (maybePromise && typeof maybePromise.catch === 'function') { + maybePromise.catch(function () {}); + } + } + } catch (sample) { + // This is inlined manually because closure doesn't do it for us. + if (sample && control && typeof sample.stack === 'string') { + return [sample.stack, control.stack]; + } + } - case TracingMarkerComponent: - return "TracingMarker"; - // The display name for these tags come from the user-provided type: + return [null, null]; + } + }; // $FlowFixMe[prop-missing] - case IncompleteClassComponent: - case IncompleteFunctionComponent: + RunInRootFrame.DetermineComponentFrameRoot.displayName = 'DetermineComponentFrameRoot'; + var namePropDescriptor = Object.getOwnPropertyDescriptor(RunInRootFrame.DetermineComponentFrameRoot, 'name'); // Before ES6, the `name` property was not configurable. - // Fallthrough + if (namePropDescriptor && namePropDescriptor.configurable) { + // V8 utilizes a function's `name` property when generating a stack trace. + Object.defineProperty(RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor + // is set to `false`. + // $FlowFixMe[cannot-write] + 'name', { + value: 'DetermineComponentFrameRoot' + }); + } - case ClassComponent: - case FunctionComponent: - case MemoComponent: - case SimpleMemoComponent: - if (typeof type === "function") { - return type.displayName || type.name || null; - } + try { + var _RunInRootFrame$Deter = RunInRootFrame.DetermineComponentFrameRoot(), + sampleStack = _RunInRootFrame$Deter[0], + controlStack = _RunInRootFrame$Deter[1]; - if (typeof type === "string") { - return type; - } + if (sampleStack && controlStack) { + // This extracts the first frame from the sample that isn't also in the control. + // Skipping one frame that we assume is the frame that calls the two. + var sampleLines = sampleStack.split('\n'); + var controlLines = controlStack.split('\n'); + var s = 0; + var c = 0; - break; + while (s < sampleLines.length && !sampleLines[s].includes('DetermineComponentFrameRoot')) { + s++; } - return null; - } - - var REACT_CLIENT_REFERENCE = Symbol.for("react.client.reference"); - var specialPropKeyWarningShown; - var specialPropRefWarningShown; - var didWarnAboutStringRefs; - var didWarnAboutOldJSXRuntime; + while (c < controlLines.length && !controlLines[c].includes('DetermineComponentFrameRoot')) { + c++; + } // We couldn't find our intentionally injected common root frame, attempt + // to find another common root frame by search from the bottom of the + // control stack... - { - didWarnAboutStringRefs = {}; - } - function hasValidRef(config) { - { - if (hasOwnProperty.call(config, "ref")) { - var getter = Object.getOwnPropertyDescriptor(config, "ref").get; + if (s === sampleLines.length || c === controlLines.length) { + s = sampleLines.length - 1; + c = controlLines.length - 1; - if (getter && getter.isReactWarning) { - return false; - } + while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { + // We expect at least one stack frame to be shared. + // Typically this will be the root most one. However, stack frames may be + // cut off due to maximum stack limits. In this case, one maybe cut off + // earlier than the other. We assume that the sample is longer or the same + // and there for cut off earlier. So we should find the root most frame in + // the sample somewhere in the control. + c--; } } - return config.ref !== undefined; - } + for (; s >= 1 && c >= 0; s--, c--) { + // Next we find the first one that isn't the same which should be the + // frame that called our sample function and the control. + if (sampleLines[s] !== controlLines[c]) { + // In V8, the first line is describing the message but other VMs don't. + // If we're about to return the first line, and the control is also on the same + // line, that's a pretty good indicator that our sample threw at same line as + // the control. I.e. before we entered the sample frame. So we ignore this result. + // This can happen if you passed a class to function component, or non-function. + if (s !== 1 || c !== 1) { + do { + s--; + c--; // We may still have similar intermediate frames from the construct call. + // The next one that isn't the same should be our match though. - function hasValidKey(config) { - { - if (hasOwnProperty.call(config, "key")) { - var getter = Object.getOwnPropertyDescriptor(config, "key").get; + if (c < 0 || sampleLines[s] !== controlLines[c]) { + // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. + var _frame = '\n' + sampleLines[s].replace(' at new ', ' at '); // If our component frame is labeled "" + // but we have a user-provided "displayName" + // splice it in to make the stack more readable. - if (getter && getter.isReactWarning) { - return false; - } - } - } - return config.key !== undefined; - } + if (fn.displayName && _frame.includes('')) { + _frame = _frame.replace('', fn.displayName); + } - function warnIfStringRefCannotBeAutoConverted(config, self) { - { - if ( - typeof config.ref === "string" && - ReactSharedInternals.owner && - self && - ReactSharedInternals.owner.stateNode !== self - ) { - var componentName = getComponentNameFromType( - ReactSharedInternals.owner.type - ); - - if (!didWarnAboutStringRefs[componentName]) { - error( - 'Component "%s" contains the string ref "%s". ' + - "Support for string refs will be removed in a future major release. " + - "This case cannot be automatically converted to an arrow function. " + - "We ask you to manually fix this case by using useRef() or createRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref", - getComponentNameFromType(ReactSharedInternals.owner.type), - config.ref - ); - - didWarnAboutStringRefs[componentName] = true; + if (true) { + if (typeof fn === 'function') { + componentFrameCache.set(fn, _frame); + } + } // Return the line we found. + + + return _frame; + } + } while (s >= 1 && c >= 0); } + + break; } } } + } finally { + reentry = false; - function defineKeyPropWarningGetter(props, displayName) { - { - var warnAboutAccessingKey = function () { - if (!specialPropKeyWarningShown) { - specialPropKeyWarningShown = true; - - error( - "%s: `key` is not a prop. Trying to access it will result " + - "in `undefined` being returned. If you need to access the same " + - "value within the child component, you should pass it as a different " + - "prop. (https://react.dev/link/special-props)", - displayName - ); - } - }; - - warnAboutAccessingKey.isReactWarning = true; - Object.defineProperty(props, "key", { - get: warnAboutAccessingKey, - configurable: true - }); - } + { + ReactSharedInternals.H = previousDispatcher; + reenableLogs(); } - function defineRefPropWarningGetter(props, displayName) { - { - { - var warnAboutAccessingRef = function () { - if (!specialPropRefWarningShown) { - specialPropRefWarningShown = true; - - error( - "%s: `ref` is not a prop. Trying to access it will result " + - "in `undefined` being returned. If you need to access the same " + - "value within the child component, you should pass it as a different " + - "prop. (https://react.dev/link/special-props)", - displayName - ); - } - }; + Error.prepareStackTrace = previousPrepareStackTrace; + } // Fallback to just using the name if we couldn't make it throw. - warnAboutAccessingRef.isReactWarning = true; - Object.defineProperty(props, "ref", { - get: warnAboutAccessingRef, - configurable: true - }); - } - } + + var name = fn ? fn.displayName || fn.name : ''; + var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ''; + + { + if (typeof fn === 'function') { + componentFrameCache.set(fn, syntheticFrame); } - /** - * Factory method to create a new React element. This no longer adheres to - * the class pattern, so do not use new to call it. Also, instanceof check - * will not work. Instead test $$typeof field against Symbol.for('react.element') to check - * if something is a React Element. - * - * @param {*} type - * @param {*} props - * @param {*} key - * @param {string|object} ref - * @param {*} owner - * @param {*} self A *temporary* helper to detect places where `this` is - * different from the `owner` when React.createElement is called, so that we - * can warn. We want to get rid of owner and replace string `ref`s with arrow - * functions, and as long as `this` and owner are the same, there will be no - * change in behavior. - * @param {*} source An annotation object (added by a transpiler or otherwise) - * indicating filename, line number, and/or other information. - * @internal - */ - - function ReactElement(type, key, _ref, self, source, owner, props) { - var ref; + } - { - ref = _ref; - } + return syntheticFrame; +} - var element; +function describeComponentFrame(name) { + return '\n in ' + (name || 'Unknown'); +} +function describeFunctionComponentFrame(fn) { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(fn, false); + } else { + if (!fn) { + return ''; + } - { - // In prod, `ref` is a regular property. It will be removed in a - // future release. - element = { - // This tag allows us to uniquely identify this as a React Element - $$typeof: REACT_ELEMENT_TYPE, - // Built-in properties that belong on the element - type: type, - key: key, - ref: ref, - props: props, - // Record the component responsible for creating this element. - _owner: owner - }; - } + var name = fn.displayName || fn.name || null; + return describeComponentFrame(name); + } +} - { - // The validation flag is currently mutative. We put it on - // an external backing store so that we can freeze the whole object. - // This can be replaced with a WeakMap once they are implemented in - // commonly used development environments. - element._store = {}; // To make comparing ReactElements easier for testing purposes, we make - // the validation flag non-enumerable (where possible, which should - // include every environment we run tests in), so the test framework - // ignores it. - - Object.defineProperty(element._store, "validated", { - configurable: false, - enumerable: false, - writable: true, - value: false - }); // debugInfo contains Server Component debug information. - - Object.defineProperty(element, "_debugInfo", { - configurable: false, - enumerable: false, - writable: true, - value: null - }); +function shouldConstruct(Component) { + var prototype = Component.prototype; + return !!(prototype && prototype.isReactComponent); +} - if (Object.freeze) { - Object.freeze(element.props); - Object.freeze(element); - } - } +function describeUnknownElementTypeFrameInDEV(type) { - return element; - } - // support `jsx` and `jsxs` when running in development. This supports the case - // where a third-party dependency ships code that was compiled for production; - // we want to still provide warnings in development. - // - // So these functions are the _dev_ implementations of the _production_ - // API signatures. - // - // Since these functions are dev-only, it's ok to add an indirection here. They - // only exist to provide different versions of `isStaticChildren`. (We shouldn't - // use this pattern for the prod versions, though, because it will add an call - // frame.) - - function jsxProdSignatureRunningInDevWithDynamicChildren( - type, - config, - maybeKey, - source, - self - ) { - { - var isStaticChildren = false; - return jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self); - } - } - function jsxProdSignatureRunningInDevWithStaticChildren( - type, - config, - maybeKey, - source, - self - ) { - { - var isStaticChildren = true; - return jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self); - } - } - var didWarnAboutKeySpread = {}; - /** - * https://github.com/reactjs/rfcs/pull/107 - * @param {*} type - * @param {object} props - * @param {string} key - */ + if (type == null) { + return ''; + } - function jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self) { - { - if (!isValidElementType(type)) { - // This is an invalid element type. - // - // We warn in this case but don't throw. We expect the element creation to - // succeed and there will likely be errors in render. - var info = ""; - - if ( - type === undefined || - (typeof type === "object" && - type !== null && - Object.keys(type).length === 0) - ) { - info += - " You likely forgot to export your component from the file " + - "it's defined in, or you might have mixed up default and named imports."; - } + if (typeof type === 'function') { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(type, shouldConstruct(type)); + } else { + return describeFunctionComponentFrame(type); + } + } - var typeString; - - if (type === null) { - typeString = "null"; - } else if (isArray(type)) { - typeString = "array"; - } else if ( - type !== undefined && - type.$$typeof === REACT_ELEMENT_TYPE - ) { - typeString = - "<" + (getComponentNameFromType(type.type) || "Unknown") + " />"; - info = - " Did you accidentally export a JSX literal instead of a component?"; - } else { - typeString = typeof type; - } + if (typeof type === 'string') { + return describeBuiltInComponentFrame(type); + } - error( - "React.jsx: type is invalid -- expected a string (for " + - "built-in components) or a class/function (for composite " + - "components) but got: %s.%s", - typeString, - info - ); - } else { - // This is a valid element type. - // Skip key warning if the type isn't valid since our key validation logic - // doesn't expect a non-string/function type and can throw confusing - // errors. We don't want exception behavior to differ between dev and - // prod. (Rendering will throw with a helpful message and as soon as the - // type is fixed, the key warnings will appear.) - var children = config.children; - - if (children !== undefined) { - if (isStaticChildren) { - if (isArray(children)) { - for (var i = 0; i < children.length; i++) { - validateChildKeys(children[i], type); - } + switch (type) { + case REACT_SUSPENSE_TYPE: + return describeBuiltInComponentFrame('Suspense'); - if (Object.freeze) { - Object.freeze(children); - } - } else { - error( - "React.jsx: Static children should always be an array. " + - "You are likely explicitly calling React.jsxs or React.jsxDEV. " + - "Use the Babel transform instead." - ); - } - } else { - validateChildKeys(children, type); - } - } - } // Warn about key spread regardless of whether the type is valid. + case REACT_SUSPENSE_LIST_TYPE: + return describeBuiltInComponentFrame('SuspenseList'); + } - if (hasOwnProperty.call(config, "key")) { - var componentName = getComponentNameFromType(type); - var keys = Object.keys(config).filter(function (k) { - return k !== "key"; - }); - var beforeExample = - keys.length > 0 - ? "{key: someKey, " + keys.join(": ..., ") + ": ...}" - : "{key: someKey}"; - - if (!didWarnAboutKeySpread[componentName + beforeExample]) { - var afterExample = - keys.length > 0 ? "{" + keys.join(": ..., ") + ": ...}" : "{}"; - - error( - 'A props object containing a "key" prop is being spread into JSX:\n' + - " let props = %s;\n" + - " <%s {...props} />\n" + - "React keys must be passed directly to JSX without using spread:\n" + - " let props = %s;\n" + - " <%s key={someKey} {...props} />", - beforeExample, - componentName, - afterExample, - componentName - ); - - didWarnAboutKeySpread[componentName + beforeExample] = true; - } - } + if (typeof type === 'object') { + switch (type.$$typeof) { + case REACT_FORWARD_REF_TYPE: + return describeFunctionComponentFrame(type.render); - var key = null; - var ref = null; // Currently, key can be spread in as a prop. This causes a potential - // issue if key is also explicitly declared (ie.
- // or
). We want to deprecate key spread, - // but as an intermediary step, we will use jsxDEV for everything except - //
, because we aren't currently able to tell if - // key is explicitly declared to be undefined or not. + case REACT_MEMO_TYPE: + // Memo may contain any component type so we recursively resolve it. + return describeUnknownElementTypeFrameInDEV(type.type); - if (maybeKey !== undefined) { - { - checkKeyStringCoercion(maybeKey); - } + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; - key = "" + maybeKey; + try { + // Lazy may contain any component type so we recursively resolve it. + return describeUnknownElementTypeFrameInDEV(init(payload)); + } catch (x) {} } + } + } - if (hasValidKey(config)) { - { - checkKeyStringCoercion(config.key); - } + return ''; +} - key = "" + config.key; - } +var FunctionComponent = 0; +var ClassComponent = 1; +var HostRoot = 3; // Root of a host tree. Could be nested inside another node. + +var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. + +var HostComponent = 5; +var HostText = 6; +var Fragment = 7; +var Mode = 8; +var ContextConsumer = 9; +var ContextProvider = 10; +var ForwardRef = 11; +var Profiler = 12; +var SuspenseComponent = 13; +var MemoComponent = 14; +var SimpleMemoComponent = 15; +var LazyComponent = 16; +var IncompleteClassComponent = 17; +var DehydratedFragment = 18; +var SuspenseListComponent = 19; +var ScopeComponent = 21; +var OffscreenComponent = 22; +var CacheComponent = 24; +var TracingMarkerComponent = 25; +var HostHoistable = 26; +var HostSingleton = 27; +var IncompleteFunctionComponent = 28; + +function getWrappedName(outerType, innerType, wrapperName) { + var functionName = innerType.displayName || innerType.name || ''; + return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName); +} // Keep in sync with shared/getComponentNameFromType + + +function getContextName(type) { + return type.displayName || 'Context'; +} +function getComponentNameFromFiber(fiber) { + var tag = fiber.tag, + type = fiber.type; - if (hasValidRef(config)) { - { - ref = config.ref; + switch (tag) { + case CacheComponent: + return 'Cache'; - { - ref = coerceStringRef(ref, ReactSharedInternals.owner, type); - } - } + case ContextConsumer: + if (enableRenderableContext) { + var consumer = type; + return getContextName(consumer._context) + '.Consumer'; + } else { + var context = type; + return getContextName(context) + '.Consumer'; + } - { - warnIfStringRefCannotBeAutoConverted(config, self); - } - } + case ContextProvider: + if (enableRenderableContext) { + var _context = type; + return getContextName(_context) + '.Provider'; + } else { + var provider = type; + return getContextName(provider._context) + '.Provider'; + } - var props; + case DehydratedFragment: + return 'DehydratedFragment'; - { - // We need to remove reserved props (key, prop, ref). Create a fresh props - // object and copy over all the non-reserved props. We don't use `delete` - // because in V8 it will deopt the object to dictionary mode. - props = {}; - - for (var propName in config) { - // Skip over reserved prop names - if (propName !== "key" && propName !== "ref") { - { - props[propName] = config[propName]; - } - } - } - } + case ForwardRef: + return getWrappedName(type, type.render, 'ForwardRef'); - if (!disableDefaultPropsExceptForClasses) { - // Resolve default props - if (type && type.defaultProps) { - var defaultProps = type.defaultProps; + case Fragment: + return 'Fragment'; - for (var _propName2 in defaultProps) { - if (props[_propName2] === undefined) { - props[_propName2] = defaultProps[_propName2]; - } - } - } - } + case HostHoistable: + case HostSingleton: + case HostComponent: + // Host component type is the display name (e.g. "div", "View") + return type; - if (key || ref) { - var displayName = - typeof type === "function" - ? type.displayName || type.name || "Unknown" - : type; + case HostPortal: + return 'Portal'; - if (key) { - defineKeyPropWarningGetter(props, displayName); - } + case HostRoot: + return 'Root'; - if (ref) { - defineRefPropWarningGetter(props, displayName); - } - } + case HostText: + return 'Text'; - var element = ReactElement( - type, - key, - ref, - self, - source, - ReactSharedInternals.owner, - props - ); - - if (type === REACT_FRAGMENT_TYPE) { - validateFragmentProps(element); - } + case LazyComponent: + // Name comes from the type in this case; we don't have a tag. + return getComponentNameFromType(type); - return element; + case Mode: + if (type === REACT_STRICT_MODE_TYPE) { + // Don't be less specific than shared/getComponentNameFromType + return 'StrictMode'; } - } - /** - * Create and return a new ReactElement of the given type. - * See https://reactjs.org/docs/react-api.html#createelement - */ - function createElement(type, config, children) { - { - if (!isValidElementType(type)) { - // This is an invalid element type. - // - // We warn in this case but don't throw. We expect the element creation to - // succeed and there will likely be errors in render. - var info = ""; - - if ( - type === undefined || - (typeof type === "object" && - type !== null && - Object.keys(type).length === 0) - ) { - info += - " You likely forgot to export your component from the file " + - "it's defined in, or you might have mixed up default and named imports."; - } + return 'Mode'; - var typeString; - - if (type === null) { - typeString = "null"; - } else if (isArray(type)) { - typeString = "array"; - } else if ( - type !== undefined && - type.$$typeof === REACT_ELEMENT_TYPE - ) { - typeString = - "<" + (getComponentNameFromType(type.type) || "Unknown") + " />"; - info = - " Did you accidentally export a JSX literal instead of a component?"; - } else { - typeString = typeof type; - } + case OffscreenComponent: + return 'Offscreen'; - error( - "React.createElement: type is invalid -- expected a string (for " + - "built-in components) or a class/function (for composite " + - "components) but got: %s.%s", - typeString, - info - ); - } else { - // This is a valid element type. - // Skip key warning if the type isn't valid since our key validation logic - // doesn't expect a non-string/function type and can throw confusing - // errors. We don't want exception behavior to differ between dev and - // prod. (Rendering will throw with a helpful message and as soon as the - // type is fixed, the key warnings will appear.) - for (var i = 2; i < arguments.length; i++) { - validateChildKeys(arguments[i], type); - } - } // Unlike the jsx() runtime, createElement() doesn't warn about key spread. - } + case Profiler: + return 'Profiler'; - var propName; // Reserved names are extracted + case ScopeComponent: + return 'Scope'; - var props = {}; - var key = null; - var ref = null; + case SuspenseComponent: + return 'Suspense'; - if (config != null) { - { - if ( - !didWarnAboutOldJSXRuntime && - "__self" in config && // Do not assume this is the result of an oudated JSX transform if key - // is present, because the modern JSX transform sometimes outputs - // createElement to preserve precedence between a static key and a - // spread key. To avoid false positive warnings, we never warn if - // there's a key. - !("key" in config) - ) { - didWarnAboutOldJSXRuntime = true; - - warn( - "Your app (or one of its dependencies) is using an outdated JSX " + - "transform. Update to the modern JSX transform for " + - "faster performance: " + // TODO: Create a short link for this - "https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html" - ); - } - } + case SuspenseListComponent: + return 'SuspenseList'; - if (hasValidRef(config)) { - { - ref = config.ref; + case TracingMarkerComponent: + return 'TracingMarker'; + // The display name for these tags come from the user-provided type: - { - ref = coerceStringRef(ref, ReactSharedInternals.owner, type); - } - } + case IncompleteClassComponent: + case IncompleteFunctionComponent: - { - warnIfStringRefCannotBeAutoConverted(config, config.__self); - } - } + // Fallthrough - if (hasValidKey(config)) { - { - checkKeyStringCoercion(config.key); - } + case ClassComponent: + case FunctionComponent: + case MemoComponent: + case SimpleMemoComponent: + if (typeof type === 'function') { + return type.displayName || type.name || null; + } - key = "" + config.key; - } // Remaining properties are added to a new props object - - for (propName in config) { - if ( - hasOwnProperty.call(config, propName) && // Skip over reserved prop names - propName !== "key" && - propName !== "ref" && // Even though we don't use these anymore in the runtime, we don't want - // them to appear as props, so in createElement we filter them out. - // We don't have to do this in the jsx() runtime because the jsx() - // transform never passed these as props; it used separate arguments. - propName !== "__self" && - propName !== "__source" - ) { - { - props[propName] = config[propName]; - } - } - } - } // Children can be more than one argument, and those are transferred onto - // the newly allocated props object. + if (typeof type === 'string') { + return type; + } - var childrenLength = arguments.length - 2; + break; - if (childrenLength === 1) { - props.children = children; - } else if (childrenLength > 1) { - var childArray = Array(childrenLength); + } - for (var _i = 0; _i < childrenLength; _i++) { - childArray[_i] = arguments[_i + 2]; - } + return null; +} - { - if (Object.freeze) { - Object.freeze(childArray); - } - } +var REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference'); +var specialPropKeyWarningShown; +var specialPropRefWarningShown; +var didWarnAboutStringRefs; +var didWarnAboutOldJSXRuntime; - props.children = childArray; - } // Resolve default props +{ + didWarnAboutStringRefs = {}; +} - if (type && type.defaultProps) { - var defaultProps = type.defaultProps; +function hasValidRef(config) { + { + if (hasOwnProperty.call(config, 'ref')) { + var getter = Object.getOwnPropertyDescriptor(config, 'ref').get; - for (propName in defaultProps) { - if (props[propName] === undefined) { - props[propName] = defaultProps[propName]; - } - } + if (getter && getter.isReactWarning) { + return false; } + } + } - { - if (key || ref) { - var displayName = - typeof type === "function" - ? type.displayName || type.name || "Unknown" - : type; - - if (key) { - defineKeyPropWarningGetter(props, displayName); - } + return config.ref !== undefined; +} - if (ref) { - defineRefPropWarningGetter(props, displayName); - } - } +function hasValidKey(config) { + { + if (hasOwnProperty.call(config, 'key')) { + var getter = Object.getOwnPropertyDescriptor(config, 'key').get; + + if (getter && getter.isReactWarning) { + return false; } + } + } - var element = ReactElement( - type, - key, - ref, - undefined, - undefined, - ReactSharedInternals.owner, - props - ); + return config.key !== undefined; +} - if (type === REACT_FRAGMENT_TYPE) { - validateFragmentProps(element); - } +function warnIfStringRefCannotBeAutoConverted(config, self) { + { + if (typeof config.ref === 'string' && ReactSharedInternals.owner && self && ReactSharedInternals.owner.stateNode !== self) { + var componentName = getComponentNameFromType(ReactSharedInternals.owner.type); - return element; - } - function cloneAndReplaceKey(oldElement, newKey) { - return ReactElement( - oldElement.type, - newKey, // When enableRefAsProp is on, this argument is ignored. This check only - // exists to avoid the `ref` access warning. - oldElement.ref, - undefined, - undefined, - oldElement._owner, - oldElement.props - ); - } - /** - * Clone and return a new ReactElement using element as the starting point. - * See https://reactjs.org/docs/react-api.html#cloneelement - */ + if (!didWarnAboutStringRefs[componentName]) { + error('Component "%s" contains the string ref "%s". ' + 'Support for string refs will be removed in a future major release. ' + 'This case cannot be automatically converted to an arrow function. ' + 'We ask you to manually fix this case by using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref', getComponentNameFromType(ReactSharedInternals.owner.type), config.ref); - function cloneElement(element, config, children) { - if (element === null || element === undefined) { - throw new Error( - "The argument must be a React element, but you passed " + - element + - "." - ); + didWarnAboutStringRefs[componentName] = true; } + } + } +} - var propName; // Original props are copied +function defineKeyPropWarningGetter(props, displayName) { + { + var warnAboutAccessingKey = function () { + if (!specialPropKeyWarningShown) { + specialPropKeyWarningShown = true; - var props = assign({}, element.props); // Reserved names are extracted + error('%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://react.dev/link/special-props)', displayName); + } + }; - var key = element.key; - var ref = element.ref; // Owner will be preserved, unless ref is overridden + warnAboutAccessingKey.isReactWarning = true; + Object.defineProperty(props, 'key', { + get: warnAboutAccessingKey, + configurable: true + }); + } +} - var owner = element._owner; +function defineRefPropWarningGetter(props, displayName) { + { + { + var warnAboutAccessingRef = function () { + if (!specialPropRefWarningShown) { + specialPropRefWarningShown = true; - if (config != null) { - if (hasValidRef(config)) { - owner = ReactSharedInternals.owner; + error('%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://react.dev/link/special-props)', displayName); + } + }; - { - // Silently steal the ref from the parent. - ref = config.ref; + warnAboutAccessingRef.isReactWarning = true; + Object.defineProperty(props, 'ref', { + get: warnAboutAccessingRef, + configurable: true + }); + } + } +} +/** + * Factory method to create a new React element. This no longer adheres to + * the class pattern, so do not use new to call it. Also, instanceof check + * will not work. Instead test $$typeof field against Symbol.for('react.element') to check + * if something is a React Element. + * + * @param {*} type + * @param {*} props + * @param {*} key + * @param {string|object} ref + * @param {*} owner + * @param {*} self A *temporary* helper to detect places where `this` is + * different from the `owner` when React.createElement is called, so that we + * can warn. We want to get rid of owner and replace string `ref`s with arrow + * functions, and as long as `this` and owner are the same, there will be no + * change in behavior. + * @param {*} source An annotation object (added by a transpiler or otherwise) + * indicating filename, line number, and/or other information. + * @internal + */ - { - ref = coerceStringRef(ref, owner, element.type); - } - } - } - if (hasValidKey(config)) { - { - checkKeyStringCoercion(config.key); - } +function ReactElement(type, key, _ref, self, source, owner, props) { + var ref; + + { + ref = _ref; + } + + var element; + + { + // In prod, `ref` is a regular property. It will be removed in a + // future release. + element = { + // This tag allows us to uniquely identify this as a React Element + $$typeof: REACT_ELEMENT_TYPE, + // Built-in properties that belong on the element + type: type, + key: key, + ref: ref, + props: props, + // Record the component responsible for creating this element. + _owner: owner + }; + } + + { + // The validation flag is currently mutative. We put it on + // an external backing store so that we can freeze the whole object. + // This can be replaced with a WeakMap once they are implemented in + // commonly used development environments. + element._store = {}; // To make comparing ReactElements easier for testing purposes, we make + // the validation flag non-enumerable (where possible, which should + // include every environment we run tests in), so the test framework + // ignores it. + + Object.defineProperty(element._store, 'validated', { + configurable: false, + enumerable: false, + writable: true, + value: false + }); // debugInfo contains Server Component debug information. + + Object.defineProperty(element, '_debugInfo', { + configurable: false, + enumerable: false, + writable: true, + value: null + }); + + if (Object.freeze) { + Object.freeze(element.props); + Object.freeze(element); + } + } + + return element; +} +// support `jsx` and `jsxs` when running in development. This supports the case +// where a third-party dependency ships code that was compiled for production; +// we want to still provide warnings in development. +// +// So these functions are the _dev_ implementations of the _production_ +// API signatures. +// +// Since these functions are dev-only, it's ok to add an indirection here. They +// only exist to provide different versions of `isStaticChildren`. (We shouldn't +// use this pattern for the prod versions, though, because it will add an call +// frame.) + +function jsxProdSignatureRunningInDevWithDynamicChildren(type, config, maybeKey, source, self) { + { + var isStaticChildren = false; + return jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self); + } +} +function jsxProdSignatureRunningInDevWithStaticChildren(type, config, maybeKey, source, self) { + { + var isStaticChildren = true; + return jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self); + } +} +var didWarnAboutKeySpread = {}; +/** + * https://github.com/reactjs/rfcs/pull/107 + * @param {*} type + * @param {object} props + * @param {string} key + */ + +function jsxDEV$1(type, config, maybeKey, isStaticChildren, source, self) { + { + if (!isValidElementType(type)) { + // This is an invalid element type. + // + // We warn in this case but don't throw. We expect the element creation to + // succeed and there will likely be errors in render. + var info = ''; - key = "" + config.key; - } // Remaining properties override existing props + if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) { + info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports."; + } - var defaultProps; + var typeString; - if ( - !disableDefaultPropsExceptForClasses && - element.type && - element.type.defaultProps - ) { - defaultProps = element.type.defaultProps; - } + if (type === null) { + typeString = 'null'; + } else if (isArray(type)) { + typeString = 'array'; + } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) { + typeString = "<" + (getComponentNameFromType(type.type) || 'Unknown') + " />"; + info = ' Did you accidentally export a JSX literal instead of a component?'; + } else { + typeString = typeof type; + } + + error('React.jsx: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info); + } else { + // This is a valid element type. + // Skip key warning if the type isn't valid since our key validation logic + // doesn't expect a non-string/function type and can throw confusing + // errors. We don't want exception behavior to differ between dev and + // prod. (Rendering will throw with a helpful message and as soon as the + // type is fixed, the key warnings will appear.) + var children = config.children; + + if (children !== undefined) { + if (isStaticChildren) { + if (isArray(children)) { + for (var i = 0; i < children.length; i++) { + validateChildKeys(children[i], type); + } - for (propName in config) { - if ( - hasOwnProperty.call(config, propName) && // Skip over reserved prop names - propName !== "key" && - propName !== "ref" && // ...and maybe these, too, though we currently rely on them for - // warnings and debug information in dev. Need to decide if we're OK - // with dropping them. In the jsx() runtime it's not an issue because - // the data gets passed as separate arguments instead of props, but - // it would be nice to stop relying on them entirely so we can drop - // them from the internal Fiber field. - propName !== "__self" && - propName !== "__source" && // Undefined `ref` is ignored by cloneElement. We treat it the same as - // if the property were missing. This is mostly for - // backwards compatibility. - !enableRefAsProp - ) { - if ( - !disableDefaultPropsExceptForClasses && - config[propName] === undefined && - defaultProps !== undefined - ) { - // Resolve default props - props[propName] = defaultProps[propName]; - } else { - { - props[propName] = config[propName]; - } + if (Object.freeze) { + Object.freeze(children); } + } else { + error('React.jsx: Static children should always be an array. ' + 'You are likely explicitly calling React.jsxs or React.jsxDEV. ' + 'Use the Babel transform instead.'); } + } else { + validateChildKeys(children, type); } - } // Children can be more than one argument, and those are transferred onto - // the newly allocated props object. + } + } // Warn about key spread regardless of whether the type is valid. - var childrenLength = arguments.length - 2; - if (childrenLength === 1) { - props.children = children; - } else if (childrenLength > 1) { - var childArray = Array(childrenLength); + if (hasOwnProperty.call(config, 'key')) { + var componentName = getComponentNameFromType(type); + var keys = Object.keys(config).filter(function (k) { + return k !== 'key'; + }); + var beforeExample = keys.length > 0 ? '{key: someKey, ' + keys.join(': ..., ') + ': ...}' : '{key: someKey}'; - for (var i = 0; i < childrenLength; i++) { - childArray[i] = arguments[i + 2]; - } + if (!didWarnAboutKeySpread[componentName + beforeExample]) { + var afterExample = keys.length > 0 ? '{' + keys.join(': ..., ') + ': ...}' : '{}'; - props.children = childArray; + error('A props object containing a "key" prop is being spread into JSX:\n' + ' let props = %s;\n' + ' <%s {...props} />\n' + 'React keys must be passed directly to JSX without using spread:\n' + ' let props = %s;\n' + ' <%s key={someKey} {...props} />', beforeExample, componentName, afterExample, componentName); + + didWarnAboutKeySpread[componentName + beforeExample] = true; } + } - var clonedElement = ReactElement( - element.type, - key, - ref, - undefined, - undefined, - owner, - props - ); + var key = null; + var ref = null; // Currently, key can be spread in as a prop. This causes a potential + // issue if key is also explicitly declared (ie.
+ // or
). We want to deprecate key spread, + // but as an intermediary step, we will use jsxDEV for everything except + //
, because we aren't currently able to tell if + // key is explicitly declared to be undefined or not. - for (var _i2 = 2; _i2 < arguments.length; _i2++) { - validateChildKeys(arguments[_i2], clonedElement.type); + if (maybeKey !== undefined) { + { + checkKeyStringCoercion(maybeKey); } - return clonedElement; + key = '' + maybeKey; } - function getDeclarationErrorAddendum() { + if (hasValidKey(config)) { { - if (ReactSharedInternals.owner) { - var name = getComponentNameFromType(ReactSharedInternals.owner.type); - - if (name) { - return "\n\nCheck the render method of `" + name + "`."; - } - } - - return ""; + checkKeyStringCoercion(config.key); } + + key = '' + config.key; } - /** - * Ensure that every element either is passed in a static location, in an - * array with an explicit keys property defined, or in an object literal - * with valid key property. - * - * @internal - * @param {ReactNode} node Statically passed child of any type. - * @param {*} parentType node's parent's type. - */ - function validateChildKeys(node, parentType) { + if (hasValidRef(config)) { { - if (typeof node !== "object" || !node) { - return; + ref = config.ref; + + { + ref = coerceStringRef(ref, ReactSharedInternals.owner, type); } + } - if (node.$$typeof === REACT_CLIENT_REFERENCE); - else if (isArray(node)) { - for (var i = 0; i < node.length; i++) { - var child = node[i]; + { + warnIfStringRefCannotBeAutoConverted(config, self); + } + } - if (isValidElement(child)) { - validateExplicitKey(child, parentType); - } - } - } else if (isValidElement(node)) { - // This element was passed in a valid location. - if (node._store) { - node._store.validated = true; - } - } else { - var iteratorFn = getIteratorFn(node); - - if (typeof iteratorFn === "function") { - // Entry iterators used to provide implicit keys, - // but now we print a separate warning for them later. - if (iteratorFn !== node.entries) { - var iterator = iteratorFn.call(node); - var step; - - while (!(step = iterator.next()).done) { - if (isValidElement(step.value)) { - validateExplicitKey(step.value, parentType); - } - } - } + var props; + + { + // We need to remove reserved props (key, prop, ref). Create a fresh props + // object and copy over all the non-reserved props. We don't use `delete` + // because in V8 it will deopt the object to dictionary mode. + props = {}; + + for (var propName in config) { + // Skip over reserved prop names + if (propName !== 'key' && (propName !== 'ref')) { + { + props[propName] = config[propName]; } } } } - /** - * Verifies the object is a ReactElement. - * See https://reactjs.org/docs/react-api.html#isvalidelement - * @param {?object} object - * @return {boolean} True if `object` is a ReactElement. - * @final - */ - - function isValidElement(object) { - return ( - typeof object === "object" && - object !== null && - object.$$typeof === REACT_ELEMENT_TYPE - ); - } - var ownerHasKeyUseWarning = {}; - /** - * Warn if the element doesn't have an explicit key assigned to it. - * This element is in an array. The array could grow and shrink or be - * reordered. All children that haven't already been validated are required to - * have a "key" property assigned to it. Error statuses are cached so a warning - * will only be shown once. - * - * @internal - * @param {ReactElement} element Element that requires a key. - * @param {*} parentType element's parent's type. - */ - - function validateExplicitKey(element, parentType) { - { - if ( - !element._store || - element._store.validated || - element.key != null - ) { - return; - } - element._store.validated = true; - var currentComponentErrorInfo = - getCurrentComponentErrorInfo(parentType); + if (!disableDefaultPropsExceptForClasses) { + // Resolve default props + if (type && type.defaultProps) { + var defaultProps = type.defaultProps; - if (ownerHasKeyUseWarning[currentComponentErrorInfo]) { - return; + for (var _propName2 in defaultProps) { + if (props[_propName2] === undefined) { + props[_propName2] = defaultProps[_propName2]; + } } + } + } - ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a - // property, it may be the creator of the child that's responsible for - // assigning it a key. - - var childOwner = ""; + if (key || ref) { + var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type; - if ( - element && - element._owner != null && - element._owner !== ReactSharedInternals.owner - ) { - var ownerName = null; + if (key) { + defineKeyPropWarningGetter(props, displayName); + } - if (typeof element._owner.tag === "number") { - ownerName = getComponentNameFromType(element._owner.type); - } else if (typeof element._owner.name === "string") { - ownerName = element._owner.name; - } // Give the component that originally created this child. + if (ref) { + defineRefPropWarningGetter(props, displayName); + } + } - childOwner = " It was passed a child from " + ownerName + "."; - } + var element = ReactElement(type, key, ref, self, source, ReactSharedInternals.owner, props); - setCurrentlyValidatingElement(element); + if (type === REACT_FRAGMENT_TYPE) { + validateFragmentProps(element); + } - error( - 'Each child in a list should have a unique "key" prop.' + - "%s%s See https://react.dev/link/warning-keys for more information.", - currentComponentErrorInfo, - childOwner - ); + return element; + } +} +/** + * Create and return a new ReactElement of the given type. + * See https://reactjs.org/docs/react-api.html#createelement + */ - setCurrentlyValidatingElement(null); +function createElement(type, config, children) { + { + if (!isValidElementType(type)) { + // This is an invalid element type. + // + // We warn in this case but don't throw. We expect the element creation to + // succeed and there will likely be errors in render. + var info = ''; + + if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) { + info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports."; } - } - function setCurrentlyValidatingElement(element) { - { - if (element) { - var stack = describeUnknownElementTypeFrameInDEV(element.type); - ReactSharedInternals.setExtraStackFrame(stack); - } else { - ReactSharedInternals.setExtraStackFrame(null); - } + var typeString; + + if (type === null) { + typeString = 'null'; + } else if (isArray(type)) { + typeString = 'array'; + } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) { + typeString = "<" + (getComponentNameFromType(type.type) || 'Unknown') + " />"; + info = ' Did you accidentally export a JSX literal instead of a component?'; + } else { + typeString = typeof type; } - } - function getCurrentComponentErrorInfo(parentType) { - { - var info = getDeclarationErrorAddendum(); + error('React.createElement: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info); + } else { + // This is a valid element type. + // Skip key warning if the type isn't valid since our key validation logic + // doesn't expect a non-string/function type and can throw confusing + // errors. We don't want exception behavior to differ between dev and + // prod. (Rendering will throw with a helpful message and as soon as the + // type is fixed, the key warnings will appear.) + for (var i = 2; i < arguments.length; i++) { + validateChildKeys(arguments[i], type); + } + } // Unlike the jsx() runtime, createElement() doesn't warn about key spread. - if (!info) { - var parentName = getComponentNameFromType(parentType); + } - if (parentName) { - info = - "\n\nCheck the top-level render call using <" + parentName + ">."; - } - } + var propName; // Reserved names are extracted + + var props = {}; + var key = null; + var ref = null; + + if (config != null) { + { + if (!didWarnAboutOldJSXRuntime && '__self' in config && // Do not assume this is the result of an oudated JSX transform if key + // is present, because the modern JSX transform sometimes outputs + // createElement to preserve precedence between a static key and a + // spread key. To avoid false positive warnings, we never warn if + // there's a key. + !('key' in config)) { + didWarnAboutOldJSXRuntime = true; - return info; + warn('Your app (or one of its dependencies) is using an outdated JSX ' + 'transform. Update to the modern JSX transform for ' + 'faster performance: ' + // TODO: Create a short link for this + 'https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html'); } } - /** - * Given a fragment, validate that it can only be provided with fragment props - * @param {ReactElement} fragment - */ - function validateFragmentProps(fragment) { - // TODO: Move this to render phase instead of at element creation. + if (hasValidRef(config)) { { - var keys = Object.keys(fragment.props); + ref = config.ref; - for (var i = 0; i < keys.length; i++) { - var key = keys[i]; - - if (key !== "children" && key !== "key") { - setCurrentlyValidatingElement(fragment); + { + ref = coerceStringRef(ref, ReactSharedInternals.owner, type); + } + } - error( - "Invalid prop `%s` supplied to `React.Fragment`. " + - "React.Fragment can only have `key` and `children` props.", - key - ); + { + warnIfStringRefCannotBeAutoConverted(config, config.__self); + } + } - setCurrentlyValidatingElement(null); - break; - } - } + if (hasValidKey(config)) { + { + checkKeyStringCoercion(config.key); + } - if (fragment.ref !== null) { - setCurrentlyValidatingElement(fragment); + key = '' + config.key; + } // Remaining properties are added to a new props object - error("Invalid attribute `ref` supplied to `React.Fragment`."); - setCurrentlyValidatingElement(null); + for (propName in config) { + if (hasOwnProperty.call(config, propName) && // Skip over reserved prop names + propName !== 'key' && (propName !== 'ref') && // Even though we don't use these anymore in the runtime, we don't want + // them to appear as props, so in createElement we filter them out. + // We don't have to do this in the jsx() runtime because the jsx() + // transform never passed these as props; it used separate arguments. + propName !== '__self' && propName !== '__source') { + { + props[propName] = config[propName]; } } } + } // Children can be more than one argument, and those are transferred onto + // the newly allocated props object. - function coerceStringRef(mixedRef, owner, type) { - var stringRef; - - if (typeof mixedRef === "string") { - stringRef = mixedRef; - } else { - if (typeof mixedRef === "number" || typeof mixedRef === "boolean") { - { - checkPropStringCoercion(mixedRef, "ref"); - } - stringRef = "" + mixedRef; - } else { - return mixedRef; - } - } + var childrenLength = arguments.length - 2; - var callback = stringRefAsCallbackRef.bind(null, stringRef, type, owner); // This is used to check whether two callback refs conceptually represent - // the same string ref, and can therefore be reused by the reconciler. Needed - // for backwards compatibility with old Meta code that relies on string refs - // not being reattached on every render. + if (childrenLength === 1) { + props.children = children; + } else if (childrenLength > 1) { + var childArray = Array(childrenLength); - callback.__stringRef = stringRef; - callback.__type = type; - callback.__owner = owner; - return callback; + for (var _i = 0; _i < childrenLength; _i++) { + childArray[_i] = arguments[_i + 2]; } - function stringRefAsCallbackRef(stringRef, type, owner, value) { - if (!owner) { - throw new Error( - "Element ref was specified as a string (" + - stringRef + - ") but no owner was set. This could happen for one of" + - " the following reasons:\n" + - "1. You may be adding a ref to a function component\n" + - "2. You may be adding a ref to a component that was not created inside a component's render method\n" + - "3. You have multiple copies of React loaded\n" + - "See https://react.dev/link/refs-must-have-owner for more information." - ); + { + if (Object.freeze) { + Object.freeze(childArray); } + } - if (owner.tag !== ClassComponent) { - throw new Error( - "Function components cannot have string refs. " + - "We recommend using useRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref" - ); - } + props.children = childArray; + } // Resolve default props - { - if ( - // Will already warn with "Function components cannot be given refs" - !(typeof type === "function" && !isReactClass(type)) - ) { - var componentName = getComponentNameFromFiber(owner) || "Component"; - - if (!didWarnAboutStringRefs[componentName]) { - error( - 'Component "%s" contains the string ref "%s". Support for string refs ' + - "will be removed in a future major release. We recommend using " + - "useRef() or createRef() instead. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-string-ref", - componentName, - stringRef - ); - - didWarnAboutStringRefs[componentName] = true; - } - } - } - var inst = owner.stateNode; + if (type && type.defaultProps) { + var defaultProps = type.defaultProps; - if (!inst) { - throw new Error( - "Missing owner for string ref " + - stringRef + - ". This error is likely caused by a " + - "bug in React. Please file an issue." - ); + for (propName in defaultProps) { + if (props[propName] === undefined) { + props[propName] = defaultProps[propName]; } + } + } - var refs = inst.refs; + { + if (key || ref) { + var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type; - if (value === null) { - delete refs[stringRef]; - } else { - refs[stringRef] = value; + if (key) { + defineKeyPropWarningGetter(props, displayName); } - } - function isReactClass(type) { - return type.prototype && type.prototype.isReactComponent; + if (ref) { + defineRefPropWarningGetter(props, displayName); + } } + } - var SEPARATOR = "."; - var SUBSEPARATOR = ":"; - /** - * Escape and wrap key so it is safe to use as a reactid - * - * @param {string} key to be escaped. - * @return {string} the escaped key. - */ + var element = ReactElement(type, key, ref, undefined, undefined, ReactSharedInternals.owner, props); - function escape(key) { - var escapeRegex = /[=:]/g; - var escaperLookup = { - "=": "=0", - ":": "=2" - }; - var escapedString = key.replace(escapeRegex, function (match) { - return escaperLookup[match]; - }); - return "$" + escapedString; - } - /** - * TODO: Test that a single child and an array with one item have the same key - * pattern. - */ - - var didWarnAboutMaps = false; - var userProvidedKeyEscapeRegex = /\/+/g; - - function escapeUserProvidedKey(text) { - return text.replace(userProvidedKeyEscapeRegex, "$&/"); - } - /** - * Generate a key string that identifies a element within a set. - * - * @param {*} element A element that could contain a manual key. - * @param {number} index Index that is used if a manual key is not provided. - * @return {string} - */ - - function getElementKey(element, index) { - // Do some typechecking here since we call this blindly. We want to ensure - // that we don't block potential future ES APIs. - if ( - typeof element === "object" && - element !== null && - element.key != null - ) { - // Explicit key - { - checkKeyStringCoercion(element.key); - } + if (type === REACT_FRAGMENT_TYPE) { + validateFragmentProps(element); + } - return escape("" + element.key); - } // Implicit key determined by the index in the set + return element; +} +function cloneAndReplaceKey(oldElement, newKey) { + return ReactElement(oldElement.type, newKey, // When enableRefAsProp is on, this argument is ignored. This check only + // exists to avoid the `ref` access warning. + oldElement.ref, undefined, undefined, oldElement._owner, oldElement.props); +} +/** + * Clone and return a new ReactElement using element as the starting point. + * See https://reactjs.org/docs/react-api.html#cloneelement + */ - return index.toString(36); - } +function cloneElement(element, config, children) { + if (element === null || element === undefined) { + throw new Error("The argument must be a React element, but you passed " + element + "."); + } - function noop$1() {} + var propName; // Original props are copied - function resolveThenable(thenable) { - switch (thenable.status) { - case "fulfilled": { - var fulfilledValue = thenable.value; - return fulfilledValue; - } + var props = assign({}, element.props); // Reserved names are extracted - case "rejected": { - var rejectedError = thenable.reason; - throw rejectedError; - } + var key = element.key; + var ref = element.ref; // Owner will be preserved, unless ref is overridden - default: { - if (typeof thenable.status === "string") { - // Only instrument the thenable if the status if not defined. If - // it's defined, but an unknown value, assume it's been instrumented by - // some custom userspace implementation. We treat it as "pending". - // Attach a dummy listener, to ensure that any lazy initialization can - // happen. Flight lazily parses JSON when the value is actually awaited. - thenable.then(noop$1, noop$1); - } else { - // This is an uncached thenable that we haven't seen before. - // TODO: Detect infinite ping loops caused by uncached promises. - var pendingThenable = thenable; - pendingThenable.status = "pending"; - pendingThenable.then( - function (fulfilledValue) { - if (thenable.status === "pending") { - var fulfilledThenable = thenable; - fulfilledThenable.status = "fulfilled"; - fulfilledThenable.value = fulfilledValue; - } - }, - function (error) { - if (thenable.status === "pending") { - var rejectedThenable = thenable; - rejectedThenable.status = "rejected"; - rejectedThenable.reason = error; - } - } - ); - } // Check one more time in case the thenable resolved synchronously. + var owner = element._owner; - switch (thenable.status) { - case "fulfilled": { - var fulfilledThenable = thenable; - return fulfilledThenable.value; - } + if (config != null) { + if (hasValidRef(config)) { + owner = ReactSharedInternals.owner; - case "rejected": { - var rejectedThenable = thenable; - var _rejectedError = rejectedThenable.reason; - throw _rejectedError; - } - } + { + // Silently steal the ref from the parent. + ref = config.ref; + + { + ref = coerceStringRef(ref, owner, element.type); } } - - throw thenable; } - function mapIntoArray(children, array, escapedPrefix, nameSoFar, callback) { - var type = typeof children; - - if (type === "undefined" || type === "boolean") { - // All of the above are perceived as null. - children = null; + if (hasValidKey(config)) { + { + checkKeyStringCoercion(config.key); } - var invokeCallback = false; + key = '' + config.key; + } // Remaining properties override existing props - if (children === null) { - invokeCallback = true; - } else { - switch (type) { - case "bigint": - case "string": - case "number": - invokeCallback = true; - break; - case "object": - switch (children.$$typeof) { - case REACT_ELEMENT_TYPE: - case REACT_PORTAL_TYPE: - invokeCallback = true; - break; - - case REACT_LAZY_TYPE: - var payload = children._payload; - var init = children._init; - return mapIntoArray( - init(payload), - array, - escapedPrefix, - nameSoFar, - callback - ); - } + var defaultProps; + + if (!disableDefaultPropsExceptForClasses && element.type && element.type.defaultProps) { + defaultProps = element.type.defaultProps; + } + + for (propName in config) { + if (hasOwnProperty.call(config, propName) && // Skip over reserved prop names + propName !== 'key' && (propName !== 'ref') && // ...and maybe these, too, though we currently rely on them for + // warnings and debug information in dev. Need to decide if we're OK + // with dropping them. In the jsx() runtime it's not an issue because + // the data gets passed as separate arguments instead of props, but + // it would be nice to stop relying on them entirely so we can drop + // them from the internal Fiber field. + propName !== '__self' && propName !== '__source' && // Undefined `ref` is ignored by cloneElement. We treat it the same as + // if the property were missing. This is mostly for + // backwards compatibility. + !(enableRefAsProp )) { + if (!disableDefaultPropsExceptForClasses && config[propName] === undefined && defaultProps !== undefined) { + // Resolve default props + props[propName] = defaultProps[propName]; + } else { + { + props[propName] = config[propName]; + } } } + } + } // Children can be more than one argument, and those are transferred onto + // the newly allocated props object. - if (invokeCallback) { - var _child = children; - var mappedChild = callback(_child); // If it's the only child, treat the name as if it was wrapped in an array - // so that it's consistent if the number of children grows: - var childKey = - nameSoFar === "" ? SEPARATOR + getElementKey(_child, 0) : nameSoFar; + var childrenLength = arguments.length - 2; - if (isArray(mappedChild)) { - var escapedChildKey = ""; + if (childrenLength === 1) { + props.children = children; + } else if (childrenLength > 1) { + var childArray = Array(childrenLength); - if (childKey != null) { - escapedChildKey = escapeUserProvidedKey(childKey) + "/"; - } + for (var i = 0; i < childrenLength; i++) { + childArray[i] = arguments[i + 2]; + } - mapIntoArray(mappedChild, array, escapedChildKey, "", function (c) { - return c; - }); - } else if (mappedChild != null) { - if (isValidElement(mappedChild)) { - { - // The `if` statement here prevents auto-disabling of the safe - // coercion ESLint rule, so we must manually disable it below. - // $FlowFixMe[incompatible-type] Flow incorrectly thinks React.Portal doesn't have a key - if ( - mappedChild.key && - (!_child || _child.key !== mappedChild.key) - ) { - checkKeyStringCoercion(mappedChild.key); - } - } + props.children = childArray; + } - mappedChild = cloneAndReplaceKey( - mappedChild, // Keep both the (mapped) and old keys if they differ, just as - // traverseAllChildren used to do for objects as children - escapedPrefix + // $FlowFixMe[incompatible-type] Flow incorrectly thinks React.Portal doesn't have a key - (mappedChild.key && (!_child || _child.key !== mappedChild.key) - ? escapeUserProvidedKey( - // $FlowFixMe[unsafe-addition] - "" + mappedChild.key // eslint-disable-line react-internal/safe-string-coercion - ) + "/" - : "") + - childKey - ); - } + var clonedElement = ReactElement(element.type, key, ref, undefined, undefined, owner, props); - array.push(mappedChild); - } + for (var _i2 = 2; _i2 < arguments.length; _i2++) { + validateChildKeys(arguments[_i2], clonedElement.type); + } - return 1; - } + return clonedElement; +} - var child; - var nextName; - var subtreeCount = 0; // Count of children found in the current subtree. +function getDeclarationErrorAddendum() { + { + if (ReactSharedInternals.owner) { + var name = getComponentNameFromType(ReactSharedInternals.owner.type); - var nextNamePrefix = - nameSoFar === "" ? SEPARATOR : nameSoFar + SUBSEPARATOR; + if (name) { + return '\n\nCheck the render method of `' + name + '`.'; + } + } - if (isArray(children)) { - for (var i = 0; i < children.length; i++) { - child = children[i]; - nextName = nextNamePrefix + getElementKey(child, i); - subtreeCount += mapIntoArray( - child, - array, - escapedPrefix, - nextName, - callback - ); - } - } else { - var iteratorFn = getIteratorFn(children); + return ''; + } +} +/** + * Ensure that every element either is passed in a static location, in an + * array with an explicit keys property defined, or in an object literal + * with valid key property. + * + * @internal + * @param {ReactNode} node Statically passed child of any type. + * @param {*} parentType node's parent's type. + */ - if (typeof iteratorFn === "function") { - var iterableChildren = children; - { - // Warn about using Maps as children - if (iteratorFn === iterableChildren.entries) { - if (!didWarnAboutMaps) { - warn( - "Using Maps as children is not supported. " + - "Use an array of keyed ReactElements instead." - ); - } +function validateChildKeys(node, parentType) { + { + if (typeof node !== 'object' || !node) { + return; + } - didWarnAboutMaps = true; - } - } + if (node.$$typeof === REACT_CLIENT_REFERENCE) ; else if (isArray(node)) { + for (var i = 0; i < node.length; i++) { + var child = node[i]; - var iterator = iteratorFn.call(iterableChildren); + if (isValidElement(child)) { + validateExplicitKey(child, parentType); + } + } + } else if (isValidElement(node)) { + // This element was passed in a valid location. + if (node._store) { + node._store.validated = true; + } + } else { + var iteratorFn = getIteratorFn(node); + + if (typeof iteratorFn === 'function') { + // Entry iterators used to provide implicit keys, + // but now we print a separate warning for them later. + if (iteratorFn !== node.entries) { + var iterator = iteratorFn.call(node); var step; - var ii = 0; // $FlowFixMe[incompatible-use] `iteratorFn` might return null according to typing. while (!(step = iterator.next()).done) { - child = step.value; - nextName = nextNamePrefix + getElementKey(child, ii++); - subtreeCount += mapIntoArray( - child, - array, - escapedPrefix, - nextName, - callback - ); + if (isValidElement(step.value)) { + validateExplicitKey(step.value, parentType); + } } - } else if (type === "object") { - if (typeof children.then === "function") { - return mapIntoArray( - resolveThenable(children), - array, - escapedPrefix, - nameSoFar, - callback - ); - } // eslint-disable-next-line react-internal/safe-string-coercion - - var childrenString = String(children); - throw new Error( - "Objects are not valid as a React child (found: " + - (childrenString === "[object Object]" - ? "object with keys {" + Object.keys(children).join(", ") + "}" - : childrenString) + - "). " + - "If you meant to render a collection of children, use an array " + - "instead." - ); } } + } + } +} +/** + * Verifies the object is a ReactElement. + * See https://reactjs.org/docs/react-api.html#isvalidelement + * @param {?object} object + * @return {boolean} True if `object` is a ReactElement. + * @final + */ - return subtreeCount; - } - /** - * Maps children that are typically specified as `props.children`. - * - * See https://reactjs.org/docs/react-api.html#reactchildrenmap - * - * The provided mapFunction(child, index) will be called for each - * leaf child. - * - * @param {?*} children Children tree container. - * @param {function(*, int)} func The map function. - * @param {*} context Context for mapFunction. - * @return {object} Object containing the ordered map of results. - */ - - function mapChildren(children, func, context) { - if (children == null) { - // $FlowFixMe limitation refining abstract types in Flow - return children; - } - - var result = []; - var count = 0; - mapIntoArray(children, result, "", "", function (child) { - return func.call(context, child, count++); - }); - return result; - } - /** - * Count the number of children that are typically specified as - * `props.children`. - * - * See https://reactjs.org/docs/react-api.html#reactchildrencount - * - * @param {?*} children Children tree container. - * @return {number} The number of children. - */ - - function countChildren(children) { - var n = 0; - mapChildren(children, function () { - n++; // Don't return anything - }); - return n; - } - /** - * Iterates through children that are typically specified as `props.children`. - * - * See https://reactjs.org/docs/react-api.html#reactchildrenforeach - * - * The provided forEachFunc(child, index) will be called for each - * leaf child. - * - * @param {?*} children Children tree container. - * @param {function(*, int)} forEachFunc - * @param {*} forEachContext Context for forEachContext. - */ - - function forEachChildren(children, forEachFunc, forEachContext) { - mapChildren( - children, // $FlowFixMe[missing-this-annot] - function () { - forEachFunc.apply(this, arguments); // Don't return anything. - }, - forEachContext - ); - } - /** - * Flatten a children object (typically specified as `props.children`) and - * return an array with appropriately re-keyed children. - * - * See https://reactjs.org/docs/react-api.html#reactchildrentoarray - */ - - function toArray(children) { - return ( - mapChildren(children, function (child) { - return child; - }) || [] - ); - } - /** - * Returns the first child in a collection of children and verifies that there - * is only one child in the collection. - * - * See https://reactjs.org/docs/react-api.html#reactchildrenonly - * - * The current implementation of this function assumes that a single child gets - * passed without a wrapper, but the purpose of this helper function is to - * abstract away the particular structure of children. - * - * @param {?object} children Child collection structure. - * @return {ReactElement} The first and only `ReactElement` contained in the - * structure. - */ - - function onlyChild(children) { - if (!isValidElement(children)) { - throw new Error( - "React.Children.only expected to receive a single React element child." - ); - } - - return children; - } - - function createContext(defaultValue) { - // TODO: Second argument used to be an optional `calculateChangedBits` - // function. Warn to reserve for future use? - var context = { - $$typeof: REACT_CONTEXT_TYPE, - // As a workaround to support multiple concurrent renderers, we categorize - // some renderers as primary and others as secondary. We only expect - // there to be two concurrent renderers at most: React Native (primary) and - // Fabric (secondary); React DOM (primary) and React ART (secondary). - // Secondary renderers store their context values on separate fields. - _currentValue: defaultValue, - _currentValue2: defaultValue, - // Used to track how many concurrent renderers this context currently - // supports within in a single renderer. Such as parallel server rendering. - _threadCount: 0, - // These are circular - Provider: null, - Consumer: null - }; - if (enableRenderableContext) { - context.Provider = context; - context.Consumer = { - $$typeof: REACT_CONSUMER_TYPE, - _context: context - }; - } else { - context.Provider = { - $$typeof: REACT_PROVIDER_TYPE, - _context: context - }; +function isValidElement(object) { + return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE; +} +var ownerHasKeyUseWarning = {}; +/** + * Warn if the element doesn't have an explicit key assigned to it. + * This element is in an array. The array could grow and shrink or be + * reordered. All children that haven't already been validated are required to + * have a "key" property assigned to it. Error statuses are cached so a warning + * will only be shown once. + * + * @internal + * @param {ReactElement} element Element that requires a key. + * @param {*} parentType element's parent's type. + */ - { - var Consumer = { - $$typeof: REACT_CONTEXT_TYPE, - _context: context - }; - Object.defineProperties(Consumer, { - Provider: { - get: function () { - return context.Provider; - }, - set: function (_Provider) { - context.Provider = _Provider; - } - }, - _currentValue: { - get: function () { - return context._currentValue; - }, - set: function (_currentValue) { - context._currentValue = _currentValue; - } - }, - _currentValue2: { - get: function () { - return context._currentValue2; - }, - set: function (_currentValue2) { - context._currentValue2 = _currentValue2; - } - }, - _threadCount: { - get: function () { - return context._threadCount; - }, - set: function (_threadCount) { - context._threadCount = _threadCount; - } - }, - Consumer: { - get: function () { - return context.Consumer; - } - }, - displayName: { - get: function () { - return context.displayName; - }, - set: function (displayName) {} - } - }); - context.Consumer = Consumer; - } - } +function validateExplicitKey(element, parentType) { + { + if (!element._store || element._store.validated || element.key != null) { + return; + } - { - context._currentRenderer = null; - context._currentRenderer2 = null; - } - - return context; - } - - var Uninitialized = -1; - var Pending = 0; - var Resolved = 1; - var Rejected = 2; - - function lazyInitializer(payload) { - if (payload._status === Uninitialized) { - var ctor = payload._result; - var thenable = ctor(); // Transition to the next state. - // This might throw either because it's missing or throws. If so, we treat it - // as still uninitialized and try again next time. Which is the same as what - // happens if the ctor or any wrappers processing the ctor throws. This might - // end up fixing it if the resolution was a concurrency bug. - - thenable.then( - function (moduleObject) { - if ( - payload._status === Pending || - payload._status === Uninitialized - ) { - // Transition to the next state. - var resolved = payload; - resolved._status = Resolved; - resolved._result = moduleObject; - } - }, - function (error) { - if ( - payload._status === Pending || - payload._status === Uninitialized - ) { - // Transition to the next state. - var rejected = payload; - rejected._status = Rejected; - rejected._result = error; - } - } - ); - - if (payload._status === Uninitialized) { - // In case, we're still uninitialized, then we're waiting for the thenable - // to resolve. Set it as pending in the meantime. - var pending = payload; - pending._status = Pending; - pending._result = thenable; - } - } + element._store.validated = true; + var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType); - if (payload._status === Resolved) { - var moduleObject = payload._result; + if (ownerHasKeyUseWarning[currentComponentErrorInfo]) { + return; + } - { - if (moduleObject === undefined) { - error( - "lazy: Expected the result of a dynamic imp" + - "ort() call. " + - "Instead received: %s\n\nYour code should look like: \n " + // Break up imports to avoid accidentally parsing them as dependencies. - "const MyComponent = lazy(() => imp" + - "ort('./MyComponent'))\n\n" + - "Did you accidentally put curly braces around the import?", - moduleObject - ); - } - } + ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a + // property, it may be the creator of the child that's responsible for + // assigning it a key. - { - if (!("default" in moduleObject)) { - error( - "lazy: Expected the result of a dynamic imp" + - "ort() call. " + - "Instead received: %s\n\nYour code should look like: \n " + // Break up imports to avoid accidentally parsing them as dependencies. - "const MyComponent = lazy(() => imp" + - "ort('./MyComponent'))", - moduleObject - ); - } - } + var childOwner = ''; - return moduleObject.default; - } else { - throw payload._result; - } - } + if (element && element._owner != null && element._owner !== ReactSharedInternals.owner) { + var ownerName = null; - function lazy(ctor) { - var payload = { - // We use these fields to store the result. - _status: Uninitialized, - _result: ctor - }; - var lazyType = { - $$typeof: REACT_LAZY_TYPE, - _payload: payload, - _init: lazyInitializer - }; + if (typeof element._owner.tag === 'number') { + ownerName = getComponentNameFromType(element._owner.type); + } else if (typeof element._owner.name === 'string') { + ownerName = element._owner.name; + } // Give the component that originally created this child. - if (!disableDefaultPropsExceptForClasses) { - { - // In production, this would just set it on the object. - var defaultProps; // $FlowFixMe[prop-missing] - - Object.defineProperties(lazyType, { - defaultProps: { - configurable: true, - get: function () { - return defaultProps; - }, - // $FlowFixMe[missing-local-annot] - set: function (newDefaultProps) { - error( - "It is not supported to assign `defaultProps` to " + - "a lazy component import. Either specify them where the component " + - "is defined, or create a wrapping component around it." - ); - - defaultProps = newDefaultProps; // Match production behavior more closely: - // $FlowFixMe[prop-missing] - - Object.defineProperty(lazyType, "defaultProps", { - enumerable: true - }); - } - } - }); - } - } - return lazyType; + childOwner = " It was passed a child from " + ownerName + "."; } - function forwardRef(render) { - { - if (render != null && render.$$typeof === REACT_MEMO_TYPE) { - error( - "forwardRef requires a render function but received a `memo` " + - "component. Instead of forwardRef(memo(...)), use " + - "memo(forwardRef(...))." - ); - } else if (typeof render !== "function") { - error( - "forwardRef requires a render function but was given %s.", - render === null ? "null" : typeof render - ); - } else { - if (render.length !== 0 && render.length !== 2) { - error( - "forwardRef render functions accept exactly two parameters: props and ref. %s", - render.length === 1 - ? "Did you forget to use the ref parameter?" - : "Any additional parameter will be undefined." - ); - } - } - - if (render != null) { - if (render.defaultProps != null) { - error( - "forwardRef render functions do not support defaultProps. " + - "Did you accidentally pass a React component?" - ); - } - } - } + setCurrentlyValidatingElement(element); - var elementType = { - $$typeof: REACT_FORWARD_REF_TYPE, - render: render - }; + error('Each child in a list should have a unique "key" prop.' + '%s%s See https://react.dev/link/warning-keys for more information.', currentComponentErrorInfo, childOwner); - { - var ownName; - Object.defineProperty(elementType, "displayName", { - enumerable: false, - configurable: true, - get: function () { - return ownName; - }, - set: function (name) { - ownName = name; // The inner component shouldn't inherit this display name in most cases, - // because the component may be used elsewhere. - // But it's nice for anonymous functions to inherit the name, - // so that our component-stack generation logic will display their frames. - // An anonymous function generally suggests a pattern like: - // React.forwardRef((props, ref) => {...}); - // This kind of inner function is not used elsewhere so the side effect is okay. - - if (!render.name && !render.displayName) { - render.displayName = name; - } - } - }); - } + setCurrentlyValidatingElement(null); + } +} - return elementType; +function setCurrentlyValidatingElement(element) { + { + if (element) { + var stack = describeUnknownElementTypeFrameInDEV(element.type); + ReactSharedInternals.setExtraStackFrame(stack); + } else { + ReactSharedInternals.setExtraStackFrame(null); } + } +} - function memo(type, compare) { - { - if (!isValidElementType(type)) { - error( - "memo: The first argument must be a component. Instead " + - "received: %s", - type === null ? "null" : typeof type - ); - } - } +function getCurrentComponentErrorInfo(parentType) { + { + var info = getDeclarationErrorAddendum(); - var elementType = { - $$typeof: REACT_MEMO_TYPE, - type: type, - compare: compare === undefined ? null : compare - }; + if (!info) { + var parentName = getComponentNameFromType(parentType); - { - var ownName; - Object.defineProperty(elementType, "displayName", { - enumerable: false, - configurable: true, - get: function () { - return ownName; - }, - set: function (name) { - ownName = name; // The inner component shouldn't inherit this display name in most cases, - // because the component may be used elsewhere. - // But it's nice for anonymous functions to inherit the name, - // so that our component-stack generation logic will display their frames. - // An anonymous function generally suggests a pattern like: - // React.memo((props) => {...}); - // This kind of inner function is not used elsewhere so the side effect is okay. - - if (!type.name && !type.displayName) { - type.displayName = name; - } - } - }); + if (parentName) { + info = "\n\nCheck the top-level render call using <" + parentName + ">."; } - - return elementType; } - function noopCache(fn) { - // On the client (i.e. not a Server Components environment) `cache` has - // no caching behavior. We just return the function as-is. - // - // We intend to implement client caching in a future major release. In the - // meantime, it's only exposed as an API so that Shared Components can use - // per-request caching on the server without breaking on the client. But it - // does mean they need to be aware of the behavioral difference. - // - // The rest of the behavior is the same as the server implementation — it - // returns a new reference, extra properties like `displayName` are not - // preserved, the length of the new function is 0, etc. That way apps can't - // accidentally depend on those details. - return function () { - // $FlowFixMe[incompatible-call]: We don't want to use rest arguments since we transpile the code. - return fn.apply(null, arguments); - }; - } - var cache = noopCache; + return info; + } +} +/** + * Given a fragment, validate that it can only be provided with fragment props + * @param {ReactElement} fragment + */ - function resolveDispatcher() { - var dispatcher = ReactSharedInternals.H; - { - if (dispatcher === null) { - error( - "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for" + - " one of the following reasons:\n" + - "1. You might have mismatching versions of React and the renderer (such as React DOM)\n" + - "2. You might be breaking the Rules of Hooks\n" + - "3. You might have more than one copy of React in the same app\n" + - "See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem." - ); - } - } // Will result in a null access error if accessed outside render phase. We - // intentionally don't throw our own error because this is in a hot path. - // Also helps ensure this is inlined. +function validateFragmentProps(fragment) { + // TODO: Move this to render phase instead of at element creation. + { + var keys = Object.keys(fragment.props); - return dispatcher; - } + for (var i = 0; i < keys.length; i++) { + var key = keys[i]; - function getCacheForType(resourceType) { - var dispatcher = ReactSharedInternals.C; + if (key !== 'children' && key !== 'key') { + setCurrentlyValidatingElement(fragment); - if (!dispatcher) { - // If there is no dispatcher, then we treat this as not being cached. - return resourceType(); - } + error('Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key); - return dispatcher.getCacheForType(resourceType); + setCurrentlyValidatingElement(null); + break; + } } - function useContext(Context) { - var dispatcher = resolveDispatcher(); - { - if (Context.$$typeof === REACT_CONSUMER_TYPE) { - error( - "Calling useContext(Context.Consumer) is not supported and will cause bugs. " + - "Did you mean to call useContext(Context) instead?" - ); - } - } + if (fragment.ref !== null) { + setCurrentlyValidatingElement(fragment); - return dispatcher.useContext(Context); - } - function useState(initialState) { - var dispatcher = resolveDispatcher(); - return dispatcher.useState(initialState); - } - function useReducer(reducer, initialArg, init) { - var dispatcher = resolveDispatcher(); - return dispatcher.useReducer(reducer, initialArg, init); - } - function useRef(initialValue) { - var dispatcher = resolveDispatcher(); - return dispatcher.useRef(initialValue); - } - function useEffect(create, deps) { - var dispatcher = resolveDispatcher(); - return dispatcher.useEffect(create, deps); - } - function useInsertionEffect(create, deps) { - var dispatcher = resolveDispatcher(); - return dispatcher.useInsertionEffect(create, deps); - } - function useLayoutEffect(create, deps) { - var dispatcher = resolveDispatcher(); - return dispatcher.useLayoutEffect(create, deps); - } - function useCallback(callback, deps) { - var dispatcher = resolveDispatcher(); - return dispatcher.useCallback(callback, deps); - } - function useMemo(create, deps) { - var dispatcher = resolveDispatcher(); - return dispatcher.useMemo(create, deps); - } - function useImperativeHandle(ref, create, deps) { - var dispatcher = resolveDispatcher(); - return dispatcher.useImperativeHandle(ref, create, deps); + error('Invalid attribute `ref` supplied to `React.Fragment`.'); + + setCurrentlyValidatingElement(null); } - function useDebugValue(value, formatterFn) { + } +} + +function coerceStringRef(mixedRef, owner, type) { + + var stringRef; + + if (typeof mixedRef === 'string') { + stringRef = mixedRef; + } else { + if (typeof mixedRef === 'number' || typeof mixedRef === 'boolean') { { - var dispatcher = resolveDispatcher(); - return dispatcher.useDebugValue(value, formatterFn); + checkPropStringCoercion(mixedRef, 'ref'); } - } - function useTransition() { - var dispatcher = resolveDispatcher(); - return dispatcher.useTransition(); - } - function useDeferredValue(value, initialValue) { - var dispatcher = resolveDispatcher(); - return dispatcher.useDeferredValue(value, initialValue); - } - function useId() { - var dispatcher = resolveDispatcher(); - return dispatcher.useId(); - } - function useSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { - var dispatcher = resolveDispatcher(); - return dispatcher.useSyncExternalStore( - subscribe, - getSnapshot, - getServerSnapshot - ); - } - function useCacheRefresh() { - var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional - return dispatcher.useCacheRefresh(); - } - function use(usable) { - var dispatcher = resolveDispatcher(); - return dispatcher.use(usable); + stringRef = '' + mixedRef; + } else { + return mixedRef; } - function useMemoCache(size) { - var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional + } - return dispatcher.useMemoCache(size); - } - function useEffectEvent(callback) { - var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional + var callback = stringRefAsCallbackRef.bind(null, stringRef, type, owner); // This is used to check whether two callback refs conceptually represent + // the same string ref, and can therefore be reused by the reconciler. Needed + // for backwards compatibility with old Meta code that relies on string refs + // not being reattached on every render. - return dispatcher.useEffectEvent(callback); - } - function useOptimistic(passthrough, reducer) { - var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional + callback.__stringRef = stringRef; + callback.__type = type; + callback.__owner = owner; + return callback; +} - return dispatcher.useOptimistic(passthrough, reducer); - } - function useActionState(action, initialState, permalink) { - if (!enableAsyncActions) { - throw new Error("Not implemented."); - } else { - var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional - - return dispatcher.useActionState(action, initialState, permalink); - } - } - - var reportGlobalError = - typeof reportError === "function" // In modern browsers, reportError will dispatch an error event, - ? // emulating an uncaught JavaScript error. - reportError - : function (error) { - if ( - typeof window === "object" && - typeof window.ErrorEvent === "function" - ) { - // Browser Polyfill - var message = - typeof error === "object" && - error !== null && - typeof error.message === "string" // eslint-disable-next-line react-internal/safe-string-coercion - ? String(error.message) // eslint-disable-next-line react-internal/safe-string-coercion - : String(error); - var event = new window.ErrorEvent("error", { - bubbles: true, - cancelable: true, - message: message, - error: error - }); - var shouldLog = window.dispatchEvent(event); - - if (!shouldLog) { - return; - } - } else if ( - typeof process === "object" && // $FlowFixMe[method-unbinding] - typeof process.emit === "function" - ) { - // Node Polyfill - process.emit("uncaughtException", error); - return; - } // eslint-disable-next-line react-internal/no-production-logging - - console["error"](error); - }; - - function startTransition(scope, options) { - var prevTransition = ReactSharedInternals.T; // Each renderer registers a callback to receive the return value of - // the scope function. This is used to implement async actions. - - var callbacks = new Set(); - var transition = { - _callbacks: callbacks - }; - ReactSharedInternals.T = transition; - var currentTransition = ReactSharedInternals.T; +function stringRefAsCallbackRef(stringRef, type, owner, value) { - { - ReactSharedInternals.T._updatedFibers = new Set(); - } + if (!owner) { + throw new Error("Element ref was specified as a string (" + stringRef + ") but no owner was set. This could happen for one of" + ' the following reasons:\n' + '1. You may be adding a ref to a function component\n' + "2. You may be adding a ref to a component that was not created inside a component's render method\n" + '3. You have multiple copies of React loaded\n' + 'See https://react.dev/link/refs-must-have-owner for more information.'); + } - if (enableAsyncActions) { - try { - var returnValue = scope(); - - if ( - typeof returnValue === "object" && - returnValue !== null && - typeof returnValue.then === "function" - ) { - callbacks.forEach(function (callback) { - return callback(currentTransition, returnValue); - }); - returnValue.then(noop, reportGlobalError); - } - } catch (error) { - reportGlobalError(error); - } finally { - warnAboutTransitionSubscriptions(prevTransition, currentTransition); - ReactSharedInternals.T = prevTransition; - } - } else { - // When async actions are not enabled, startTransition does not - // capture errors. - try { - scope(); - } finally { - warnAboutTransitionSubscriptions(prevTransition, currentTransition); - ReactSharedInternals.T = prevTransition; - } + if (owner.tag !== ClassComponent) { + throw new Error('Function components cannot have string refs. ' + 'We recommend using useRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref'); + } + + { + if ( // Will already warn with "Function components cannot be given refs" + !(typeof type === 'function' && !isReactClass(type))) { + var componentName = getComponentNameFromFiber(owner) || 'Component'; + + if (!didWarnAboutStringRefs[componentName]) { + error('Component "%s" contains the string ref "%s". Support for string refs ' + 'will be removed in a future major release. We recommend using ' + 'useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-string-ref', componentName, stringRef); + + didWarnAboutStringRefs[componentName] = true; } } + } - function warnAboutTransitionSubscriptions( - prevTransition, - currentTransition - ) { - { - if (prevTransition === null && currentTransition._updatedFibers) { - var updatedFibersCount = currentTransition._updatedFibers.size; + var inst = owner.stateNode; - currentTransition._updatedFibers.clear(); + if (!inst) { + throw new Error("Missing owner for string ref " + stringRef + ". This error is likely caused by a " + 'bug in React. Please file an issue.'); + } - if (updatedFibersCount > 10) { - warn( - "Detected a large number of updates inside startTransition. " + - "If this is due to a subscription please re-write it to use React provided hooks. " + - "Otherwise concurrent mode guarantees are off the table." - ); - } - } - } + var refs = inst.refs; + + if (value === null) { + delete refs[stringRef]; + } else { + refs[stringRef] = value; + } +} + +function isReactClass(type) { + return type.prototype && type.prototype.isReactComponent; +} + +var SEPARATOR = '.'; +var SUBSEPARATOR = ':'; +/** + * Escape and wrap key so it is safe to use as a reactid + * + * @param {string} key to be escaped. + * @return {string} the escaped key. + */ + +function escape(key) { + var escapeRegex = /[=:]/g; + var escaperLookup = { + '=': '=0', + ':': '=2' + }; + var escapedString = key.replace(escapeRegex, function (match) { + return escaperLookup[match]; + }); + return '$' + escapedString; +} +/** + * TODO: Test that a single child and an array with one item have the same key + * pattern. + */ + + +var didWarnAboutMaps = false; +var userProvidedKeyEscapeRegex = /\/+/g; + +function escapeUserProvidedKey(text) { + return text.replace(userProvidedKeyEscapeRegex, '$&/'); +} +/** + * Generate a key string that identifies a element within a set. + * + * @param {*} element A element that could contain a manual key. + * @param {number} index Index that is used if a manual key is not provided. + * @return {string} + */ + + +function getElementKey(element, index) { + // Do some typechecking here since we call this blindly. We want to ensure + // that we don't block potential future ES APIs. + if (typeof element === 'object' && element !== null && element.key != null) { + // Explicit key + { + checkKeyStringCoercion(element.key); } - function noop() {} + return escape('' + element.key); + } // Implicit key determined by the index in the set - var didWarnAboutMessageChannel = false; - var enqueueTaskImpl = null; - function enqueueTask(task) { - if (enqueueTaskImpl === null) { - try { - // read require off the module object to get around the bundlers. - // we don't want them to detect a require and bundle a Node polyfill. - var requireString = ("require" + Math.random()).slice(0, 7); - var nodeRequire = module && module[requireString]; // assuming we're in node, let's try to get node's - // version of setImmediate, bypassing fake timers if any. - - enqueueTaskImpl = nodeRequire.call(module, "timers").setImmediate; - } catch (_err) { - // we're in a browser - // we can't use regular timers because they may still be faked - // so we try MessageChannel+postMessage instead - enqueueTaskImpl = function (callback) { + + return index.toString(36); +} + +function noop$1() {} + +function resolveThenable(thenable) { + switch (thenable.status) { + case 'fulfilled': + { + var fulfilledValue = thenable.value; + return fulfilledValue; + } + + case 'rejected': + { + var rejectedError = thenable.reason; + throw rejectedError; + } + + default: + { + if (typeof thenable.status === 'string') { + // Only instrument the thenable if the status if not defined. If + // it's defined, but an unknown value, assume it's been instrumented by + // some custom userspace implementation. We treat it as "pending". + // Attach a dummy listener, to ensure that any lazy initialization can + // happen. Flight lazily parses JSON when the value is actually awaited. + thenable.then(noop$1, noop$1); + } else { + // This is an uncached thenable that we haven't seen before. + // TODO: Detect infinite ping loops caused by uncached promises. + var pendingThenable = thenable; + pendingThenable.status = 'pending'; + pendingThenable.then(function (fulfilledValue) { + if (thenable.status === 'pending') { + var fulfilledThenable = thenable; + fulfilledThenable.status = 'fulfilled'; + fulfilledThenable.value = fulfilledValue; + } + }, function (error) { + if (thenable.status === 'pending') { + var rejectedThenable = thenable; + rejectedThenable.status = 'rejected'; + rejectedThenable.reason = error; + } + }); + } // Check one more time in case the thenable resolved synchronously. + + + switch (thenable.status) { + case 'fulfilled': { - if (didWarnAboutMessageChannel === false) { - didWarnAboutMessageChannel = true; - - if (typeof MessageChannel === "undefined") { - error( - "This browser does not have a MessageChannel implementation, " + - "so enqueuing tasks via await act(async () => ...) will fail. " + - "Please file an issue at https://github.com/facebook/react/issues " + - "if you encounter this warning." - ); - } - } + var fulfilledThenable = thenable; + return fulfilledThenable.value; } - var channel = new MessageChannel(); - channel.port1.onmessage = callback; - channel.port2.postMessage(undefined); - }; + case 'rejected': + { + var rejectedThenable = thenable; + var _rejectedError = rejectedThenable.reason; + throw _rejectedError; + } } } + } + + throw thenable; +} + +function mapIntoArray(children, array, escapedPrefix, nameSoFar, callback) { + var type = typeof children; + + if (type === 'undefined' || type === 'boolean') { + // All of the above are perceived as null. + children = null; + } + + var invokeCallback = false; + + if (children === null) { + invokeCallback = true; + } else { + switch (type) { + case 'bigint': + case 'string': + case 'number': + invokeCallback = true; + break; + + case 'object': + switch (children.$$typeof) { + case REACT_ELEMENT_TYPE: + case REACT_PORTAL_TYPE: + invokeCallback = true; + break; + + case REACT_LAZY_TYPE: + var payload = children._payload; + var init = children._init; + return mapIntoArray(init(payload), array, escapedPrefix, nameSoFar, callback); + } - return enqueueTaskImpl(task); } + } - // number of `act` scopes on the stack. + if (invokeCallback) { + var _child = children; + var mappedChild = callback(_child); // If it's the only child, treat the name as if it was wrapped in an array + // so that it's consistent if the number of children grows: - var actScopeDepth = 0; // We only warn the first time you neglect to await an async `act` scope. + var childKey = nameSoFar === '' ? SEPARATOR + getElementKey(_child, 0) : nameSoFar; + + if (isArray(mappedChild)) { + var escapedChildKey = ''; + + if (childKey != null) { + escapedChildKey = escapeUserProvidedKey(childKey) + '/'; + } - var didWarnNoAwaitAct = false; + mapIntoArray(mappedChild, array, escapedChildKey, '', function (c) { + return c; + }); + } else if (mappedChild != null) { + if (isValidElement(mappedChild)) { + { + // The `if` statement here prevents auto-disabling of the safe + // coercion ESLint rule, so we must manually disable it below. + // $FlowFixMe[incompatible-type] Flow incorrectly thinks React.Portal doesn't have a key + if (mappedChild.key && (!_child || _child.key !== mappedChild.key)) { + checkKeyStringCoercion(mappedChild.key); + } + } - function aggregateErrors(errors) { - if (errors.length > 1 && typeof AggregateError === "function") { - // eslint-disable-next-line no-undef - return new AggregateError(errors); + mappedChild = cloneAndReplaceKey(mappedChild, // Keep both the (mapped) and old keys if they differ, just as + // traverseAllChildren used to do for objects as children + escapedPrefix + ( // $FlowFixMe[incompatible-type] Flow incorrectly thinks React.Portal doesn't have a key + mappedChild.key && (!_child || _child.key !== mappedChild.key) ? escapeUserProvidedKey( // $FlowFixMe[unsafe-addition] + '' + mappedChild.key // eslint-disable-line react-internal/safe-string-coercion + ) + '/' : '') + childKey); } - return errors[0]; + array.push(mappedChild); + } + + return 1; + } + + var child; + var nextName; + var subtreeCount = 0; // Count of children found in the current subtree. + + var nextNamePrefix = nameSoFar === '' ? SEPARATOR : nameSoFar + SUBSEPARATOR; + + if (isArray(children)) { + for (var i = 0; i < children.length; i++) { + child = children[i]; + nextName = nextNamePrefix + getElementKey(child, i); + subtreeCount += mapIntoArray(child, array, escapedPrefix, nextName, callback); } + } else { + var iteratorFn = getIteratorFn(children); + + if (typeof iteratorFn === 'function') { + var iterableChildren = children; - function act(callback) { { - // When ReactSharedInternals.actQueue is not null, it signals to React that - // we're currently inside an `act` scope. React will push all its tasks to - // this queue instead of scheduling them with platform APIs. - // - // We set this to an empty array when we first enter an `act` scope, and - // only unset it once we've left the outermost `act` scope — remember that - // `act` calls can be nested. - // - // If we're already inside an `act` scope, reuse the existing queue. - var prevIsBatchingLegacy = ReactSharedInternals.isBatchingLegacy; - var prevActQueue = ReactSharedInternals.actQueue; - var prevActScopeDepth = actScopeDepth; - actScopeDepth++; - var queue = (ReactSharedInternals.actQueue = - prevActQueue !== null ? prevActQueue : []); // Used to reproduce behavior of `batchedUpdates` in legacy mode. Only - // set to `true` while the given callback is executed, not for updates - // triggered during an async event, because this is how the legacy - // implementation of `act` behaved. + // Warn about using Maps as children + if (iteratorFn === iterableChildren.entries) { + if (!didWarnAboutMaps) { + warn('Using Maps as children is not supported. ' + 'Use an array of keyed ReactElements instead.'); + } - { - ReactSharedInternals.isBatchingLegacy = true; + didWarnAboutMaps = true; } + } - var result; // This tracks whether the `act` call is awaited. In certain cases, not - // awaiting it is a mistake, so we will detect that and warn. + var iterator = iteratorFn.call(iterableChildren); + var step; + var ii = 0; // $FlowFixMe[incompatible-use] `iteratorFn` might return null according to typing. - var didAwaitActCall = false; + while (!(step = iterator.next()).done) { + child = step.value; + nextName = nextNamePrefix + getElementKey(child, ii++); + subtreeCount += mapIntoArray(child, array, escapedPrefix, nextName, callback); + } + } else if (type === 'object') { + if (typeof children.then === 'function') { + return mapIntoArray(resolveThenable(children), array, escapedPrefix, nameSoFar, callback); + } // eslint-disable-next-line react-internal/safe-string-coercion - try { - // Reset this to `false` right before entering the React work loop. The - // only place we ever read this fields is just below, right after running - // the callback. So we don't need to reset after the callback runs. - if (!disableLegacyMode) { - ReactSharedInternals.didScheduleLegacyUpdate = false; - } - result = callback(); - var didScheduleLegacyUpdate = !disableLegacyMode - ? ReactSharedInternals.didScheduleLegacyUpdate - : false; // Replicate behavior of original `act` implementation in legacy mode, - // which flushed updates immediately after the scope function exits, even - // if it's an async function. - - if (!prevIsBatchingLegacy && didScheduleLegacyUpdate) { - flushActQueue(queue); - } // `isBatchingLegacy` gets reset using the regular stack, not the async - // one used to track `act` scopes. Why, you may be wondering? Because - // that's how it worked before version 18. Yes, it's confusing! We should - // delete legacy mode!! - - if (!disableLegacyMode) { - ReactSharedInternals.isBatchingLegacy = prevIsBatchingLegacy; + var childrenString = String(children); + throw new Error("Objects are not valid as a React child (found: " + (childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString) + "). " + 'If you meant to render a collection of children, use an array ' + 'instead.'); + } + } + + return subtreeCount; +} +/** + * Maps children that are typically specified as `props.children`. + * + * See https://reactjs.org/docs/react-api.html#reactchildrenmap + * + * The provided mapFunction(child, index) will be called for each + * leaf child. + * + * @param {?*} children Children tree container. + * @param {function(*, int)} func The map function. + * @param {*} context Context for mapFunction. + * @return {object} Object containing the ordered map of results. + */ + + +function mapChildren(children, func, context) { + if (children == null) { + // $FlowFixMe limitation refining abstract types in Flow + return children; + } + + var result = []; + var count = 0; + mapIntoArray(children, result, '', '', function (child) { + return func.call(context, child, count++); + }); + return result; +} +/** + * Count the number of children that are typically specified as + * `props.children`. + * + * See https://reactjs.org/docs/react-api.html#reactchildrencount + * + * @param {?*} children Children tree container. + * @return {number} The number of children. + */ + + +function countChildren(children) { + var n = 0; + mapChildren(children, function () { + n++; // Don't return anything + }); + return n; +} +/** + * Iterates through children that are typically specified as `props.children`. + * + * See https://reactjs.org/docs/react-api.html#reactchildrenforeach + * + * The provided forEachFunc(child, index) will be called for each + * leaf child. + * + * @param {?*} children Children tree container. + * @param {function(*, int)} forEachFunc + * @param {*} forEachContext Context for forEachContext. + */ + + +function forEachChildren(children, forEachFunc, forEachContext) { + mapChildren(children, // $FlowFixMe[missing-this-annot] + function () { + forEachFunc.apply(this, arguments); // Don't return anything. + }, forEachContext); +} +/** + * Flatten a children object (typically specified as `props.children`) and + * return an array with appropriately re-keyed children. + * + * See https://reactjs.org/docs/react-api.html#reactchildrentoarray + */ + + +function toArray(children) { + return mapChildren(children, function (child) { + return child; + }) || []; +} +/** + * Returns the first child in a collection of children and verifies that there + * is only one child in the collection. + * + * See https://reactjs.org/docs/react-api.html#reactchildrenonly + * + * The current implementation of this function assumes that a single child gets + * passed without a wrapper, but the purpose of this helper function is to + * abstract away the particular structure of children. + * + * @param {?object} children Child collection structure. + * @return {ReactElement} The first and only `ReactElement` contained in the + * structure. + */ + + +function onlyChild(children) { + if (!isValidElement(children)) { + throw new Error('React.Children.only expected to receive a single React element child.'); + } + + return children; +} + +function createContext(defaultValue) { + // TODO: Second argument used to be an optional `calculateChangedBits` + // function. Warn to reserve for future use? + var context = { + $$typeof: REACT_CONTEXT_TYPE, + // As a workaround to support multiple concurrent renderers, we categorize + // some renderers as primary and others as secondary. We only expect + // there to be two concurrent renderers at most: React Native (primary) and + // Fabric (secondary); React DOM (primary) and React ART (secondary). + // Secondary renderers store their context values on separate fields. + _currentValue: defaultValue, + _currentValue2: defaultValue, + // Used to track how many concurrent renderers this context currently + // supports within in a single renderer. Such as parallel server rendering. + _threadCount: 0, + // These are circular + Provider: null, + Consumer: null + }; + + if (enableRenderableContext) { + context.Provider = context; + context.Consumer = { + $$typeof: REACT_CONSUMER_TYPE, + _context: context + }; + } else { + context.Provider = { + $$typeof: REACT_PROVIDER_TYPE, + _context: context + }; + + { + var Consumer = { + $$typeof: REACT_CONTEXT_TYPE, + _context: context + }; + Object.defineProperties(Consumer, { + Provider: { + get: function () { + return context.Provider; + }, + set: function (_Provider) { + context.Provider = _Provider; } - } catch (error) { - // `isBatchingLegacy` gets reset using the regular stack, not the async - // one used to track `act` scopes. Why, you may be wondering? Because - // that's how it worked before version 18. Yes, it's confusing! We should - // delete legacy mode!! - ReactSharedInternals.thrownErrors.push(error); + }, + _currentValue: { + get: function () { + return context._currentValue; + }, + set: function (_currentValue) { + context._currentValue = _currentValue; + } + }, + _currentValue2: { + get: function () { + return context._currentValue2; + }, + set: function (_currentValue2) { + context._currentValue2 = _currentValue2; + } + }, + _threadCount: { + get: function () { + return context._threadCount; + }, + set: function (_threadCount) { + context._threadCount = _threadCount; + } + }, + Consumer: { + get: function () { + return context.Consumer; + } + }, + displayName: { + get: function () { + return context.displayName; + }, + set: function (displayName) {} } + }); + context.Consumer = Consumer; + } + } - if (ReactSharedInternals.thrownErrors.length > 0) { - { - ReactSharedInternals.isBatchingLegacy = prevIsBatchingLegacy; + { + context._currentRenderer = null; + context._currentRenderer2 = null; + } + + return context; +} + +var Uninitialized = -1; +var Pending = 0; +var Resolved = 1; +var Rejected = 2; + +function lazyInitializer(payload) { + if (payload._status === Uninitialized) { + var ctor = payload._result; + var thenable = ctor(); // Transition to the next state. + // This might throw either because it's missing or throws. If so, we treat it + // as still uninitialized and try again next time. Which is the same as what + // happens if the ctor or any wrappers processing the ctor throws. This might + // end up fixing it if the resolution was a concurrency bug. + + thenable.then(function (moduleObject) { + if (payload._status === Pending || payload._status === Uninitialized) { + // Transition to the next state. + var resolved = payload; + resolved._status = Resolved; + resolved._result = moduleObject; + } + }, function (error) { + if (payload._status === Pending || payload._status === Uninitialized) { + // Transition to the next state. + var rejected = payload; + rejected._status = Rejected; + rejected._result = error; + } + }); + + if (payload._status === Uninitialized) { + // In case, we're still uninitialized, then we're waiting for the thenable + // to resolve. Set it as pending in the meantime. + var pending = payload; + pending._status = Pending; + pending._result = thenable; + } + } + + if (payload._status === Resolved) { + var moduleObject = payload._result; + + { + if (moduleObject === undefined) { + error('lazy: Expected the result of a dynamic imp' + 'ort() call. ' + 'Instead received: %s\n\nYour code should look like: \n ' + // Break up imports to avoid accidentally parsing them as dependencies. + 'const MyComponent = lazy(() => imp' + "ort('./MyComponent'))\n\n" + 'Did you accidentally put curly braces around the import?', moduleObject); + } + } + + { + if (!('default' in moduleObject)) { + error('lazy: Expected the result of a dynamic imp' + 'ort() call. ' + 'Instead received: %s\n\nYour code should look like: \n ' + // Break up imports to avoid accidentally parsing them as dependencies. + 'const MyComponent = lazy(() => imp' + "ort('./MyComponent'))", moduleObject); + } + } + + return moduleObject.default; + } else { + throw payload._result; + } +} + +function lazy(ctor) { + var payload = { + // We use these fields to store the result. + _status: Uninitialized, + _result: ctor + }; + var lazyType = { + $$typeof: REACT_LAZY_TYPE, + _payload: payload, + _init: lazyInitializer + }; + + if (!disableDefaultPropsExceptForClasses) { + { + // In production, this would just set it on the object. + var defaultProps; // $FlowFixMe[prop-missing] + + Object.defineProperties(lazyType, { + defaultProps: { + configurable: true, + get: function () { + return defaultProps; + }, + // $FlowFixMe[missing-local-annot] + set: function (newDefaultProps) { + error('It is not supported to assign `defaultProps` to ' + 'a lazy component import. Either specify them where the component ' + 'is defined, or create a wrapping component around it.'); + + defaultProps = newDefaultProps; // Match production behavior more closely: + // $FlowFixMe[prop-missing] + + Object.defineProperty(lazyType, 'defaultProps', { + enumerable: true + }); } + } + }); + } + } + + return lazyType; +} - popActScope(prevActQueue, prevActScopeDepth); - var thrownError = aggregateErrors(ReactSharedInternals.thrownErrors); - ReactSharedInternals.thrownErrors.length = 0; - throw thrownError; +function forwardRef(render) { + { + if (render != null && render.$$typeof === REACT_MEMO_TYPE) { + error('forwardRef requires a render function but received a `memo` ' + 'component. Instead of forwardRef(memo(...)), use ' + 'memo(forwardRef(...)).'); + } else if (typeof render !== 'function') { + error('forwardRef requires a render function but was given %s.', render === null ? 'null' : typeof render); + } else { + if (render.length !== 0 && render.length !== 2) { + error('forwardRef render functions accept exactly two parameters: props and ref. %s', render.length === 1 ? 'Did you forget to use the ref parameter?' : 'Any additional parameter will be undefined.'); + } + } + + if (render != null) { + if (render.defaultProps != null) { + error('forwardRef render functions do not support defaultProps. ' + 'Did you accidentally pass a React component?'); + } + } + } + + var elementType = { + $$typeof: REACT_FORWARD_REF_TYPE, + render: render + }; + + { + var ownName; + Object.defineProperty(elementType, 'displayName', { + enumerable: false, + configurable: true, + get: function () { + return ownName; + }, + set: function (name) { + ownName = name; // The inner component shouldn't inherit this display name in most cases, + // because the component may be used elsewhere. + // But it's nice for anonymous functions to inherit the name, + // so that our component-stack generation logic will display their frames. + // An anonymous function generally suggests a pattern like: + // React.forwardRef((props, ref) => {...}); + // This kind of inner function is not used elsewhere so the side effect is okay. + + if (!render.name && !render.displayName) { + render.displayName = name; } + } + }); + } - if ( - result !== null && - typeof result === "object" && // $FlowFixMe[method-unbinding] - typeof result.then === "function" - ) { - // A promise/thenable was returned from the callback. Wait for it to - // resolve before flushing the queue. - // - // If `act` were implemented as an async function, this whole block could - // be a single `await` call. That's really the only difference between - // this branch and the next one. - var thenable = result; // Warn if the an `act` call with an async scope is not awaited. In a - // future release, consider making this an error. + return elementType; +} - queueSeveralMicrotasks(function () { - if (!didAwaitActCall && !didWarnNoAwaitAct) { - didWarnNoAwaitAct = true; +function memo(type, compare) { + { + if (!isValidElementType(type)) { + error('memo: The first argument must be a component. Instead ' + 'received: %s', type === null ? 'null' : typeof type); + } + } + + var elementType = { + $$typeof: REACT_MEMO_TYPE, + type: type, + compare: compare === undefined ? null : compare + }; + + { + var ownName; + Object.defineProperty(elementType, 'displayName', { + enumerable: false, + configurable: true, + get: function () { + return ownName; + }, + set: function (name) { + ownName = name; // The inner component shouldn't inherit this display name in most cases, + // because the component may be used elsewhere. + // But it's nice for anonymous functions to inherit the name, + // so that our component-stack generation logic will display their frames. + // An anonymous function generally suggests a pattern like: + // React.memo((props) => {...}); + // This kind of inner function is not used elsewhere so the side effect is okay. - error( - "You called act(async () => ...) without await. " + - "This could lead to unexpected testing behaviour, " + - "interleaving multiple act calls and mixing their " + - "scopes. " + - "You should - await act(async () => ...);" - ); - } - }); - return { - then: function (resolve, reject) { - didAwaitActCall = true; - thenable.then( - function (returnValue) { - popActScope(prevActQueue, prevActScopeDepth); - - if (prevActScopeDepth === 0) { - // We're exiting the outermost `act` scope. Flush the queue. - try { - flushActQueue(queue); - enqueueTask(function () { - return ( - // Recursively flush tasks scheduled by a microtask. - recursivelyFlushAsyncActWork( - returnValue, - resolve, - reject - ) - ); - }); - } catch (error) { - // `thenable` might not be a real promise, and `flushActQueue` - // might throw, so we need to wrap `flushActQueue` in a - // try/catch. - ReactSharedInternals.thrownErrors.push(error); - } - - if (ReactSharedInternals.thrownErrors.length > 0) { - var _thrownError = aggregateErrors( - ReactSharedInternals.thrownErrors - ); - - ReactSharedInternals.thrownErrors.length = 0; - reject(_thrownError); - } - } else { - resolve(returnValue); - } - }, - function (error) { - popActScope(prevActQueue, prevActScopeDepth); - - if (ReactSharedInternals.thrownErrors.length > 0) { - var _thrownError2 = aggregateErrors( - ReactSharedInternals.thrownErrors - ); - - ReactSharedInternals.thrownErrors.length = 0; - reject(_thrownError2); - } else { - reject(error); - } - } - ); - } - }; - } else { - var returnValue = result; // The callback is not an async function. Exit the current - // scope immediately. + if (!type.name && !type.displayName) { + type.displayName = name; + } + } + }); + } - popActScope(prevActQueue, prevActScopeDepth); + return elementType; +} - if (prevActScopeDepth === 0) { - // We're exiting the outermost `act` scope. Flush the queue. - flushActQueue(queue); // If the queue is not empty, it implies that we intentionally yielded - // to the main thread, because something suspended. We will continue - // in an asynchronous task. - // - // Warn if something suspends but the `act` call is not awaited. - // In a future release, consider making this an error. - - if (queue.length !== 0) { - queueSeveralMicrotasks(function () { - if (!didAwaitActCall && !didWarnNoAwaitAct) { - didWarnNoAwaitAct = true; - - error( - "A component suspended inside an `act` scope, but the " + - "`act` call was not awaited. When testing React " + - "components that depend on asynchronous data, you must " + - "await the result:\n\n" + - "await act(() => ...)" - ); - } - }); - } // Like many things in this module, this is next part is confusing. - // - // We do not currently require every `act` call that is passed a - // callback to be awaited, through arguably we should. Since this - // callback was synchronous, we need to exit the current scope before - // returning. - // - // However, if thenable we're about to return *is* awaited, we'll - // immediately restore the current scope. So it shouldn't observable. - // - // This doesn't affect the case where the scope callback is async, - // because we always require those calls to be awaited. - // - // TODO: In a future version, consider always requiring all `act` calls - // to be awaited, regardless of whether the callback is sync or async. - - ReactSharedInternals.actQueue = null; - } +function noopCache(fn) { + // On the client (i.e. not a Server Components environment) `cache` has + // no caching behavior. We just return the function as-is. + // + // We intend to implement client caching in a future major release. In the + // meantime, it's only exposed as an API so that Shared Components can use + // per-request caching on the server without breaking on the client. But it + // does mean they need to be aware of the behavioral difference. + // + // The rest of the behavior is the same as the server implementation — it + // returns a new reference, extra properties like `displayName` are not + // preserved, the length of the new function is 0, etc. That way apps can't + // accidentally depend on those details. + return function () { + // $FlowFixMe[incompatible-call]: We don't want to use rest arguments since we transpile the code. + return fn.apply(null, arguments); + }; +} +var cache = noopCache ; + +function resolveDispatcher() { + var dispatcher = ReactSharedInternals.H; + + { + if (dispatcher === null) { + error('Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for' + ' one of the following reasons:\n' + '1. You might have mismatching versions of React and the renderer (such as React DOM)\n' + '2. You might be breaking the Rules of Hooks\n' + '3. You might have more than one copy of React in the same app\n' + 'See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem.'); + } + } // Will result in a null access error if accessed outside render phase. We + // intentionally don't throw our own error because this is in a hot path. + // Also helps ensure this is inlined. + + + return dispatcher; +} + +function getCacheForType(resourceType) { + var dispatcher = ReactSharedInternals.C; + + if (!dispatcher) { + // If there is no dispatcher, then we treat this as not being cached. + return resourceType(); + } + + return dispatcher.getCacheForType(resourceType); +} +function useContext(Context) { + var dispatcher = resolveDispatcher(); + + { + if (Context.$$typeof === REACT_CONSUMER_TYPE) { + error('Calling useContext(Context.Consumer) is not supported and will cause bugs. ' + 'Did you mean to call useContext(Context) instead?'); + } + } + + return dispatcher.useContext(Context); +} +function useState(initialState) { + var dispatcher = resolveDispatcher(); + return dispatcher.useState(initialState); +} +function useReducer(reducer, initialArg, init) { + var dispatcher = resolveDispatcher(); + return dispatcher.useReducer(reducer, initialArg, init); +} +function useRef(initialValue) { + var dispatcher = resolveDispatcher(); + return dispatcher.useRef(initialValue); +} +function useEffect(create, deps) { + var dispatcher = resolveDispatcher(); + return dispatcher.useEffect(create, deps); +} +function useInsertionEffect(create, deps) { + var dispatcher = resolveDispatcher(); + return dispatcher.useInsertionEffect(create, deps); +} +function useLayoutEffect(create, deps) { + var dispatcher = resolveDispatcher(); + return dispatcher.useLayoutEffect(create, deps); +} +function useCallback(callback, deps) { + var dispatcher = resolveDispatcher(); + return dispatcher.useCallback(callback, deps); +} +function useMemo(create, deps) { + var dispatcher = resolveDispatcher(); + return dispatcher.useMemo(create, deps); +} +function useImperativeHandle(ref, create, deps) { + var dispatcher = resolveDispatcher(); + return dispatcher.useImperativeHandle(ref, create, deps); +} +function useDebugValue(value, formatterFn) { + { + var dispatcher = resolveDispatcher(); + return dispatcher.useDebugValue(value, formatterFn); + } +} +function useTransition() { + var dispatcher = resolveDispatcher(); + return dispatcher.useTransition(); +} +function useDeferredValue(value, initialValue) { + var dispatcher = resolveDispatcher(); + return dispatcher.useDeferredValue(value, initialValue); +} +function useId() { + var dispatcher = resolveDispatcher(); + return dispatcher.useId(); +} +function useSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { + var dispatcher = resolveDispatcher(); + return dispatcher.useSyncExternalStore(subscribe, getSnapshot, getServerSnapshot); +} +function useCacheRefresh() { + var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional + + return dispatcher.useCacheRefresh(); +} +function use(usable) { + var dispatcher = resolveDispatcher(); + return dispatcher.use(usable); +} +function useMemoCache(size) { + var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional + + return dispatcher.useMemoCache(size); +} +function useEffectEvent(callback) { + var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional - if (ReactSharedInternals.thrownErrors.length > 0) { - var _thrownError3 = aggregateErrors( - ReactSharedInternals.thrownErrors - ); + return dispatcher.useEffectEvent(callback); +} +function useOptimistic(passthrough, reducer) { + var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional + + return dispatcher.useOptimistic(passthrough, reducer); +} +function useActionState(action, initialState, permalink) { + if (!enableAsyncActions) { + throw new Error('Not implemented.'); + } else { + var dispatcher = resolveDispatcher(); // $FlowFixMe[not-a-function] This is unstable, thus optional + + return dispatcher.useActionState(action, initialState, permalink); + } +} - ReactSharedInternals.thrownErrors.length = 0; - throw _thrownError3; +var reportGlobalError = typeof reportError === 'function' ? // In modern browsers, reportError will dispatch an error event, +// emulating an uncaught JavaScript error. +reportError : function (error) { + if (typeof window === 'object' && typeof window.ErrorEvent === 'function') { + // Browser Polyfill + var message = typeof error === 'object' && error !== null && typeof error.message === 'string' ? // eslint-disable-next-line react-internal/safe-string-coercion + String(error.message) : // eslint-disable-next-line react-internal/safe-string-coercion + String(error); + var event = new window.ErrorEvent('error', { + bubbles: true, + cancelable: true, + message: message, + error: error + }); + var shouldLog = window.dispatchEvent(event); + + if (!shouldLog) { + return; + } + } else if (typeof process === 'object' && // $FlowFixMe[method-unbinding] + typeof process.emit === 'function') { + // Node Polyfill + process.emit('uncaughtException', error); + return; + } // eslint-disable-next-line react-internal/no-production-logging + + + console['error'](error); +}; + +function startTransition(scope, options) { + var prevTransition = ReactSharedInternals.T; // Each renderer registers a callback to receive the return value of + // the scope function. This is used to implement async actions. + + var callbacks = new Set(); + var transition = { + _callbacks: callbacks + }; + ReactSharedInternals.T = transition; + var currentTransition = ReactSharedInternals.T; + + { + ReactSharedInternals.T._updatedFibers = new Set(); + } + + if (enableAsyncActions) { + try { + var returnValue = scope(); + + if (typeof returnValue === 'object' && returnValue !== null && typeof returnValue.then === 'function') { + callbacks.forEach(function (callback) { + return callback(currentTransition, returnValue); + }); + returnValue.then(noop, reportGlobalError); + } + } catch (error) { + reportGlobalError(error); + } finally { + warnAboutTransitionSubscriptions(prevTransition, currentTransition); + ReactSharedInternals.T = prevTransition; + } + } else { + // When async actions are not enabled, startTransition does not + // capture errors. + try { + scope(); + } finally { + warnAboutTransitionSubscriptions(prevTransition, currentTransition); + ReactSharedInternals.T = prevTransition; + } + } +} + +function warnAboutTransitionSubscriptions(prevTransition, currentTransition) { + { + if (prevTransition === null && currentTransition._updatedFibers) { + var updatedFibersCount = currentTransition._updatedFibers.size; + + currentTransition._updatedFibers.clear(); + + if (updatedFibersCount > 10) { + warn('Detected a large number of updates inside startTransition. ' + 'If this is due to a subscription please re-write it to use React provided hooks. ' + 'Otherwise concurrent mode guarantees are off the table.'); + } + } + } +} + +function noop() {} + +var didWarnAboutMessageChannel = false; +var enqueueTaskImpl = null; +function enqueueTask(task) { + if (enqueueTaskImpl === null) { + try { + // read require off the module object to get around the bundlers. + // we don't want them to detect a require and bundle a Node polyfill. + var requireString = ('require' + Math.random()).slice(0, 7); + var nodeRequire = module && module[requireString]; // assuming we're in node, let's try to get node's + // version of setImmediate, bypassing fake timers if any. + + enqueueTaskImpl = nodeRequire.call(module, 'timers').setImmediate; + } catch (_err) { + // we're in a browser + // we can't use regular timers because they may still be faked + // so we try MessageChannel+postMessage instead + enqueueTaskImpl = function (callback) { + { + if (didWarnAboutMessageChannel === false) { + didWarnAboutMessageChannel = true; + + if (typeof MessageChannel === 'undefined') { + error('This browser does not have a MessageChannel implementation, ' + 'so enqueuing tasks via await act(async () => ...) will fail. ' + 'Please file an issue at https://github.com/facebook/react/issues ' + 'if you encounter this warning.'); + } } + } + + var channel = new MessageChannel(); + channel.port1.onmessage = callback; + channel.port2.postMessage(undefined); + }; + } + } + + return enqueueTaskImpl(task); +} + +// number of `act` scopes on the stack. + +var actScopeDepth = 0; // We only warn the first time you neglect to await an async `act` scope. + +var didWarnNoAwaitAct = false; + +function aggregateErrors(errors) { + if (errors.length > 1 && typeof AggregateError === 'function') { + // eslint-disable-next-line no-undef + return new AggregateError(errors); + } + + return errors[0]; +} + +function act(callback) { + { + // When ReactSharedInternals.actQueue is not null, it signals to React that + // we're currently inside an `act` scope. React will push all its tasks to + // this queue instead of scheduling them with platform APIs. + // + // We set this to an empty array when we first enter an `act` scope, and + // only unset it once we've left the outermost `act` scope — remember that + // `act` calls can be nested. + // + // If we're already inside an `act` scope, reuse the existing queue. + var prevIsBatchingLegacy = ReactSharedInternals.isBatchingLegacy ; + var prevActQueue = ReactSharedInternals.actQueue; + var prevActScopeDepth = actScopeDepth; + actScopeDepth++; + var queue = ReactSharedInternals.actQueue = prevActQueue !== null ? prevActQueue : []; // Used to reproduce behavior of `batchedUpdates` in legacy mode. Only + // set to `true` while the given callback is executed, not for updates + // triggered during an async event, because this is how the legacy + // implementation of `act` behaved. + + { + ReactSharedInternals.isBatchingLegacy = true; + } - return { - then: function (resolve, reject) { - didAwaitActCall = true; + var result; // This tracks whether the `act` call is awaited. In certain cases, not + // awaiting it is a mistake, so we will detect that and warn. + + var didAwaitActCall = false; + + try { + // Reset this to `false` right before entering the React work loop. The + // only place we ever read this fields is just below, right after running + // the callback. So we don't need to reset after the callback runs. + if (!disableLegacyMode) { + ReactSharedInternals.didScheduleLegacyUpdate = false; + } + + result = callback(); + var didScheduleLegacyUpdate = !disableLegacyMode ? ReactSharedInternals.didScheduleLegacyUpdate : false; // Replicate behavior of original `act` implementation in legacy mode, + // which flushed updates immediately after the scope function exits, even + // if it's an async function. + + if (!prevIsBatchingLegacy && didScheduleLegacyUpdate) { + flushActQueue(queue); + } // `isBatchingLegacy` gets reset using the regular stack, not the async + // one used to track `act` scopes. Why, you may be wondering? Because + // that's how it worked before version 18. Yes, it's confusing! We should + // delete legacy mode!! + + + if (!disableLegacyMode) { + ReactSharedInternals.isBatchingLegacy = prevIsBatchingLegacy; + } + } catch (error) { + // `isBatchingLegacy` gets reset using the regular stack, not the async + // one used to track `act` scopes. Why, you may be wondering? Because + // that's how it worked before version 18. Yes, it's confusing! We should + // delete legacy mode!! + ReactSharedInternals.thrownErrors.push(error); + } - if (prevActScopeDepth === 0) { - // If the `act` call is awaited, restore the queue we were - // using before (see long comment above) so we can flush it. - ReactSharedInternals.actQueue = queue; + if (ReactSharedInternals.thrownErrors.length > 0) { + { + ReactSharedInternals.isBatchingLegacy = prevIsBatchingLegacy; + } + + popActScope(prevActQueue, prevActScopeDepth); + var thrownError = aggregateErrors(ReactSharedInternals.thrownErrors); + ReactSharedInternals.thrownErrors.length = 0; + throw thrownError; + } + + if (result !== null && typeof result === 'object' && // $FlowFixMe[method-unbinding] + typeof result.then === 'function') { + // A promise/thenable was returned from the callback. Wait for it to + // resolve before flushing the queue. + // + // If `act` were implemented as an async function, this whole block could + // be a single `await` call. That's really the only difference between + // this branch and the next one. + var thenable = result; // Warn if the an `act` call with an async scope is not awaited. In a + // future release, consider making this an error. + + queueSeveralMicrotasks(function () { + if (!didAwaitActCall && !didWarnNoAwaitAct) { + didWarnNoAwaitAct = true; + + error('You called act(async () => ...) without await. ' + 'This could lead to unexpected testing behaviour, ' + 'interleaving multiple act calls and mixing their ' + 'scopes. ' + 'You should - await act(async () => ...);'); + } + }); + return { + then: function (resolve, reject) { + didAwaitActCall = true; + thenable.then(function (returnValue) { + popActScope(prevActQueue, prevActScopeDepth); + + if (prevActScopeDepth === 0) { + // We're exiting the outermost `act` scope. Flush the queue. + try { + flushActQueue(queue); enqueueTask(function () { - return ( - // Recursively flush tasks scheduled by a microtask. + return (// Recursively flush tasks scheduled by a microtask. recursivelyFlushAsyncActWork(returnValue, resolve, reject) ); }); - } else { - resolve(returnValue); + } catch (error) { + // `thenable` might not be a real promise, and `flushActQueue` + // might throw, so we need to wrap `flushActQueue` in a + // try/catch. + ReactSharedInternals.thrownErrors.push(error); } + + if (ReactSharedInternals.thrownErrors.length > 0) { + var _thrownError = aggregateErrors(ReactSharedInternals.thrownErrors); + + ReactSharedInternals.thrownErrors.length = 0; + reject(_thrownError); + } + } else { + resolve(returnValue); + } + }, function (error) { + popActScope(prevActQueue, prevActScopeDepth); + + if (ReactSharedInternals.thrownErrors.length > 0) { + var _thrownError2 = aggregateErrors(ReactSharedInternals.thrownErrors); + + ReactSharedInternals.thrownErrors.length = 0; + reject(_thrownError2); + } else { + reject(error); } - }; + }); } + }; + } else { + var returnValue = result; // The callback is not an async function. Exit the current + // scope immediately. + + popActScope(prevActQueue, prevActScopeDepth); + + if (prevActScopeDepth === 0) { + // We're exiting the outermost `act` scope. Flush the queue. + flushActQueue(queue); // If the queue is not empty, it implies that we intentionally yielded + // to the main thread, because something suspended. We will continue + // in an asynchronous task. + // + // Warn if something suspends but the `act` call is not awaited. + // In a future release, consider making this an error. + + if (queue.length !== 0) { + queueSeveralMicrotasks(function () { + if (!didAwaitActCall && !didWarnNoAwaitAct) { + didWarnNoAwaitAct = true; + + error('A component suspended inside an `act` scope, but the ' + '`act` call was not awaited. When testing React ' + 'components that depend on asynchronous data, you must ' + 'await the result:\n\n' + 'await act(() => ...)'); + } + }); + } // Like many things in this module, this is next part is confusing. + // + // We do not currently require every `act` call that is passed a + // callback to be awaited, through arguably we should. Since this + // callback was synchronous, we need to exit the current scope before + // returning. + // + // However, if thenable we're about to return *is* awaited, we'll + // immediately restore the current scope. So it shouldn't observable. + // + // This doesn't affect the case where the scope callback is async, + // because we always require those calls to be awaited. + // + // TODO: In a future version, consider always requiring all `act` calls + // to be awaited, regardless of whether the callback is sync or async. + + + ReactSharedInternals.actQueue = null; } - } - function popActScope(prevActQueue, prevActScopeDepth) { - { - if (prevActScopeDepth !== actScopeDepth - 1) { - error( - "You seem to have overlapping act() calls, this is not supported. " + - "Be sure to await previous act() calls before making a new one. " - ); - } + if (ReactSharedInternals.thrownErrors.length > 0) { + var _thrownError3 = aggregateErrors(ReactSharedInternals.thrownErrors); - actScopeDepth = prevActScopeDepth; + ReactSharedInternals.thrownErrors.length = 0; + throw _thrownError3; } - } - function recursivelyFlushAsyncActWork(returnValue, resolve, reject) { - { - // Check if any tasks were scheduled asynchronously. - var queue = ReactSharedInternals.actQueue; + return { + then: function (resolve, reject) { + didAwaitActCall = true; - if (queue !== null) { - if (queue.length !== 0) { - // Async tasks were scheduled, mostly likely in a microtask. - // Keep flushing until there are no more. - try { - flushActQueue(queue); // The work we just performed may have schedule additional async - // tasks. Wait a macrotask and check again. - - enqueueTask(function () { - return recursivelyFlushAsyncActWork( - returnValue, - resolve, - reject - ); - }); - return; - } catch (error) { - // Leave remaining tasks on the queue if something throws. - ReactSharedInternals.thrownErrors.push(error); - } + if (prevActScopeDepth === 0) { + // If the `act` call is awaited, restore the queue we were + // using before (see long comment above) so we can flush it. + ReactSharedInternals.actQueue = queue; + enqueueTask(function () { + return (// Recursively flush tasks scheduled by a microtask. + recursivelyFlushAsyncActWork(returnValue, resolve, reject) + ); + }); } else { - // The queue is empty. We can finish. - ReactSharedInternals.actQueue = null; + resolve(returnValue); } } + }; + } + } +} - if (ReactSharedInternals.thrownErrors.length > 0) { - var thrownError = aggregateErrors(ReactSharedInternals.thrownErrors); - ReactSharedInternals.thrownErrors.length = 0; - reject(thrownError); - } else { - resolve(returnValue); - } - } +function popActScope(prevActQueue, prevActScopeDepth) { + { + if (prevActScopeDepth !== actScopeDepth - 1) { + error('You seem to have overlapping act() calls, this is not supported. ' + 'Be sure to await previous act() calls before making a new one. '); } - var isFlushing = false; + actScopeDepth = prevActScopeDepth; + } +} - function flushActQueue(queue) { - { - if (!isFlushing) { - // Prevent re-entrance. - isFlushing = true; - var i = 0; +function recursivelyFlushAsyncActWork(returnValue, resolve, reject) { + { + // Check if any tasks were scheduled asynchronously. + var queue = ReactSharedInternals.actQueue; - try { - for (; i < queue.length; i++) { - var callback = queue[i]; - - do { - ReactSharedInternals.didUsePromise = false; - var continuation = callback(false); - - if (continuation !== null) { - if (ReactSharedInternals.didUsePromise) { - // The component just suspended. Yield to the main thread in - // case the promise is already resolved. If so, it will ping in - // a microtask and we can resume without unwinding the stack. - queue[i] = callback; - queue.splice(0, i); - return; - } + if (queue !== null) { + if (queue.length !== 0) { + // Async tasks were scheduled, mostly likely in a microtask. + // Keep flushing until there are no more. + try { + flushActQueue(queue); // The work we just performed may have schedule additional async + // tasks. Wait a macrotask and check again. - callback = continuation; - } else { - break; - } - } while (true); - } // We flushed the entire queue. - - queue.length = 0; - } catch (error) { - // If something throws, leave the remaining callbacks on the queue. - queue.splice(0, i + 1); - ReactSharedInternals.thrownErrors.push(error); - } finally { - isFlushing = false; - } + enqueueTask(function () { + return recursivelyFlushAsyncActWork(returnValue, resolve, reject); + }); + return; + } catch (error) { + // Leave remaining tasks on the queue if something throws. + ReactSharedInternals.thrownErrors.push(error); } + } else { + // The queue is empty. We can finish. + ReactSharedInternals.actQueue = null; } - } // Some of our warnings attempt to detect if the `act` call is awaited by - // checking in an asynchronous task. Wait a few microtasks before checking. The - // only reason one isn't sufficient is we want to accommodate the case where an - // `act` call is returned from an async function without first being awaited, - // since that's a somewhat common pattern. If you do this too many times in a - // nested sequence, you might get a warning, but you can always fix by awaiting - // the call. - // - // A macrotask would also work (and is the fallback) but depending on the test - // environment it may cause the warning to fire too late. - - var queueSeveralMicrotasks = - typeof queueMicrotask === "function" - ? function (callback) { - queueMicrotask(function () { - return queueMicrotask(callback); - }); - } - : enqueueTask; - - var Children = { - map: mapChildren, - forEach: forEachChildren, - count: countChildren, - toArray: toArray, - only: onlyChild - }; + } - var jsx = jsxProdSignatureRunningInDevWithDynamicChildren; // we may want to special case jsxs internally to take advantage of static children. - // for now we can ship identical prod functions - - var jsxs = jsxProdSignatureRunningInDevWithStaticChildren; - var jsxDEV = jsxDEV$1; - - exports.Children = Children; - exports.Component = Component; - exports.Fragment = REACT_FRAGMENT_TYPE; - exports.Profiler = REACT_PROFILER_TYPE; - exports.PureComponent = PureComponent; - exports.StrictMode = REACT_STRICT_MODE_TYPE; - exports.Suspense = REACT_SUSPENSE_TYPE; - exports.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE = - ReactSharedInternals; - exports.act = act; - exports.cache = cache; - exports.cloneElement = cloneElement; - exports.createContext = createContext; - exports.createElement = createElement; - exports.createRef = createRef; - exports.experimental_useEffectEvent = useEffectEvent; - exports.forwardRef = forwardRef; - exports.isValidElement = isValidElement; - exports.jsx = jsx; - exports.jsxDEV = jsxDEV; - exports.jsxs = jsxs; - exports.lazy = lazy; - exports.memo = memo; - exports.startTransition = startTransition; - exports.unstable_Activity = REACT_OFFSCREEN_TYPE; - exports.unstable_DebugTracingMode = REACT_DEBUG_TRACING_MODE_TYPE; - exports.unstable_LegacyHidden = REACT_LEGACY_HIDDEN_TYPE; - exports.unstable_Scope = REACT_SCOPE_TYPE; - exports.unstable_SuspenseList = REACT_SUSPENSE_LIST_TYPE; - exports.unstable_TracingMarker = REACT_TRACING_MARKER_TYPE; - exports.unstable_getCacheForType = getCacheForType; - exports.unstable_useCacheRefresh = useCacheRefresh; - exports.unstable_useMemoCache = useMemoCache; - exports.use = use; - exports.useActionState = useActionState; - exports.useCallback = useCallback; - exports.useContext = useContext; - exports.useDebugValue = useDebugValue; - exports.useDeferredValue = useDeferredValue; - exports.useEffect = useEffect; - exports.useId = useId; - exports.useImperativeHandle = useImperativeHandle; - exports.useInsertionEffect = useInsertionEffect; - exports.useLayoutEffect = useLayoutEffect; - exports.useMemo = useMemo; - exports.useOptimistic = useOptimistic; - exports.useReducer = useReducer; - exports.useRef = useRef; - exports.useState = useState; - exports.useSyncExternalStore = useSyncExternalStore; - exports.useTransition = useTransition; - exports.version = ReactVersion; - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); + if (ReactSharedInternals.thrownErrors.length > 0) { + var thrownError = aggregateErrors(ReactSharedInternals.thrownErrors); + ReactSharedInternals.thrownErrors.length = 0; + reject(thrownError); + } else { + resolve(returnValue); } + } +} + +var isFlushing = false; + +function flushActQueue(queue) { + { + if (!isFlushing) { + // Prevent re-entrance. + isFlushing = true; + var i = 0; + + try { + for (; i < queue.length; i++) { + var callback = queue[i]; + + do { + ReactSharedInternals.didUsePromise = false; + var continuation = callback(false); + + if (continuation !== null) { + if (ReactSharedInternals.didUsePromise) { + // The component just suspended. Yield to the main thread in + // case the promise is already resolved. If so, it will ping in + // a microtask and we can resume without unwinding the stack. + queue[i] = callback; + queue.splice(0, i); + return; + } + + callback = continuation; + } else { + break; + } + } while (true); + } // We flushed the entire queue. + + + queue.length = 0; + } catch (error) { + // If something throws, leave the remaining callbacks on the queue. + queue.splice(0, i + 1); + ReactSharedInternals.thrownErrors.push(error); + } finally { + isFlushing = false; + } + } + } +} // Some of our warnings attempt to detect if the `act` call is awaited by +// checking in an asynchronous task. Wait a few microtasks before checking. The +// only reason one isn't sufficient is we want to accommodate the case where an +// `act` call is returned from an async function without first being awaited, +// since that's a somewhat common pattern. If you do this too many times in a +// nested sequence, you might get a warning, but you can always fix by awaiting +// the call. +// +// A macrotask would also work (and is the fallback) but depending on the test +// environment it may cause the warning to fire too late. + + +var queueSeveralMicrotasks = typeof queueMicrotask === 'function' ? function (callback) { + queueMicrotask(function () { + return queueMicrotask(callback); + }); +} : enqueueTask; + +var Children = { + map: mapChildren, + forEach: forEachChildren, + count: countChildren, + toArray: toArray, + only: onlyChild +}; + +var jsx = jsxProdSignatureRunningInDevWithDynamicChildren ; // we may want to special case jsxs internally to take advantage of static children. +// for now we can ship identical prod functions + +var jsxs = jsxProdSignatureRunningInDevWithStaticChildren ; +var jsxDEV = jsxDEV$1 ; + +exports.Children = Children; +exports.Component = Component; +exports.Fragment = REACT_FRAGMENT_TYPE; +exports.Profiler = REACT_PROFILER_TYPE; +exports.PureComponent = PureComponent; +exports.StrictMode = REACT_STRICT_MODE_TYPE; +exports.Suspense = REACT_SUSPENSE_TYPE; +exports.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE = ReactSharedInternals; +exports.act = act; +exports.cache = cache; +exports.cloneElement = cloneElement; +exports.createContext = createContext; +exports.createElement = createElement; +exports.createRef = createRef; +exports.experimental_useEffectEvent = useEffectEvent; +exports.forwardRef = forwardRef; +exports.isValidElement = isValidElement; +exports.jsx = jsx; +exports.jsxDEV = jsxDEV; +exports.jsxs = jsxs; +exports.lazy = lazy; +exports.memo = memo; +exports.startTransition = startTransition; +exports.unstable_Activity = REACT_OFFSCREEN_TYPE; +exports.unstable_DebugTracingMode = REACT_DEBUG_TRACING_MODE_TYPE; +exports.unstable_LegacyHidden = REACT_LEGACY_HIDDEN_TYPE; +exports.unstable_Scope = REACT_SCOPE_TYPE; +exports.unstable_SuspenseList = REACT_SUSPENSE_LIST_TYPE; +exports.unstable_TracingMarker = REACT_TRACING_MARKER_TYPE; +exports.unstable_getCacheForType = getCacheForType; +exports.unstable_useCacheRefresh = useCacheRefresh; +exports.unstable_useMemoCache = useMemoCache; +exports.use = use; +exports.useActionState = useActionState; +exports.useCallback = useCallback; +exports.useContext = useContext; +exports.useDebugValue = useDebugValue; +exports.useDeferredValue = useDeferredValue; +exports.useEffect = useEffect; +exports.useId = useId; +exports.useImperativeHandle = useImperativeHandle; +exports.useInsertionEffect = useInsertionEffect; +exports.useLayoutEffect = useLayoutEffect; +exports.useMemo = useMemo; +exports.useOptimistic = useOptimistic; +exports.useReducer = useReducer; +exports.useRef = useRef; +exports.useState = useState; +exports.useSyncExternalStore = useSyncExternalStore; +exports.useTransition = useTransition; +exports.version = ReactVersion; + /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); +} + })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/Scheduler-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/Scheduler-dev.js index 58701090969d8..9d540981f04b3 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/Scheduler-dev.js +++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/Scheduler-dev.js @@ -7,617 +7,621 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<<58af4bb9ea8656229bd048421236ac87>> + * @generated SignedSource<> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; - - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); - } - var enableSchedulerDebugging = false; - var enableProfiling = false; - var frameYieldMs = 5; - var userBlockingPriorityTimeout = 250; - var normalPriorityTimeout = 5000; - var lowPriorityTimeout = 10000; - - function push(heap, node) { - var index = heap.length; - heap.push(node); - siftUp(heap, node, index); - } - function peek(heap) { - return heap.length === 0 ? null : heap[0]; - } - function pop(heap) { - if (heap.length === 0) { - return null; - } + (function() { - var first = heap[0]; - var last = heap.pop(); + 'use strict'; - if (last !== first) { - heap[0] = last; - siftDown(heap, last, 0); - } +/* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); +} + var enableSchedulerDebugging = false; +var enableProfiling = false; +var frameYieldMs = 5; +var userBlockingPriorityTimeout = 250; +var normalPriorityTimeout = 5000; +var lowPriorityTimeout = 10000; + +function push(heap, node) { + var index = heap.length; + heap.push(node); + siftUp(heap, node, index); +} +function peek(heap) { + return heap.length === 0 ? null : heap[0]; +} +function pop(heap) { + if (heap.length === 0) { + return null; + } - return first; - } + var first = heap[0]; + var last = heap.pop(); - function siftUp(heap, node, i) { - var index = i; - - while (index > 0) { - var parentIndex = (index - 1) >>> 1; - var parent = heap[parentIndex]; - - if (compare(parent, node) > 0) { - // The parent is larger. Swap positions. - heap[parentIndex] = node; - heap[index] = parent; - index = parentIndex; - } else { - // The parent is smaller. Exit. - return; - } - } + if (last !== first) { + heap[0] = last; + siftDown(heap, last, 0); + } + + return first; +} + +function siftUp(heap, node, i) { + var index = i; + + while (index > 0) { + var parentIndex = index - 1 >>> 1; + var parent = heap[parentIndex]; + + if (compare(parent, node) > 0) { + // The parent is larger. Swap positions. + heap[parentIndex] = node; + heap[index] = parent; + index = parentIndex; + } else { + // The parent is smaller. Exit. + return; } + } +} - function siftDown(heap, node, i) { - var index = i; - var length = heap.length; - var halfLength = length >>> 1; - - while (index < halfLength) { - var leftIndex = (index + 1) * 2 - 1; - var left = heap[leftIndex]; - var rightIndex = leftIndex + 1; - var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those. - - if (compare(left, node) < 0) { - if (rightIndex < length && compare(right, left) < 0) { - heap[index] = right; - heap[rightIndex] = node; - index = rightIndex; - } else { - heap[index] = left; - heap[leftIndex] = node; - index = leftIndex; - } - } else if (rightIndex < length && compare(right, node) < 0) { - heap[index] = right; - heap[rightIndex] = node; - index = rightIndex; - } else { - // Neither child is smaller. Exit. - return; - } +function siftDown(heap, node, i) { + var index = i; + var length = heap.length; + var halfLength = length >>> 1; + + while (index < halfLength) { + var leftIndex = (index + 1) * 2 - 1; + var left = heap[leftIndex]; + var rightIndex = leftIndex + 1; + var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those. + + if (compare(left, node) < 0) { + if (rightIndex < length && compare(right, left) < 0) { + heap[index] = right; + heap[rightIndex] = node; + index = rightIndex; + } else { + heap[index] = left; + heap[leftIndex] = node; + index = leftIndex; } + } else if (rightIndex < length && compare(right, node) < 0) { + heap[index] = right; + heap[rightIndex] = node; + index = rightIndex; + } else { + // Neither child is smaller. Exit. + return; } + } +} - function compare(a, b) { - // Compare sort index first, then task id. - var diff = a.sortIndex - b.sortIndex; - return diff !== 0 ? diff : a.id - b.id; - } +function compare(a, b) { + // Compare sort index first, then task id. + var diff = a.sortIndex - b.sortIndex; + return diff !== 0 ? diff : a.id - b.id; +} + +// TODO: Use symbols? +var ImmediatePriority = 1; +var UserBlockingPriority = 2; +var NormalPriority = 3; +var LowPriority = 4; +var IdlePriority = 5; - // TODO: Use symbols? - var ImmediatePriority = 1; - var UserBlockingPriority = 2; - var NormalPriority = 3; - var LowPriority = 4; - var IdlePriority = 5; +function markTaskErrored(task, ms) { +} - function markTaskErrored(task, ms) {} +/* eslint-disable no-var */ +exports.unstable_now = void 0; +var hasPerformanceNow = // $FlowFixMe[method-unbinding] +typeof performance === 'object' && typeof performance.now === 'function'; + +if (hasPerformanceNow) { + var localPerformance = performance; + + exports.unstable_now = function () { + return localPerformance.now(); + }; +} else { + var localDate = Date; + var initialTime = localDate.now(); + + exports.unstable_now = function () { + return localDate.now() - initialTime; + }; +} // Max 31 bit integer. The max integer size in V8 for 32-bit systems. +// Math.pow(2, 30) - 1 +// 0b111111111111111111111111111111 + + +var maxSigned31BitInt = 1073741823; // Tasks are stored on a min heap + +var taskQueue = []; +var timerQueue = []; // Incrementing id counter. Used to maintain insertion order. + +var taskIdCounter = 1; // Pausing the scheduler is useful for debugging. +var currentTask = null; +var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrance. + +var isPerformingWork = false; +var isHostCallbackScheduled = false; +var isHostTimeoutScheduled = false; // Capture local references to native APIs, in case a polyfill overrides them. + +var localSetTimeout = typeof setTimeout === 'function' ? setTimeout : null; +var localClearTimeout = typeof clearTimeout === 'function' ? clearTimeout : null; +var localSetImmediate = typeof setImmediate !== 'undefined' ? setImmediate : null; // IE and Node.js + jsdom + +function advanceTimers(currentTime) { + // Check for tasks that are no longer delayed and add them to the queue. + var timer = peek(timerQueue); + + while (timer !== null) { + if (timer.callback === null) { + // Timer was cancelled. + pop(timerQueue); + } else if (timer.startTime <= currentTime) { + // Timer fired. Transfer to the task queue. + pop(timerQueue); + timer.sortIndex = timer.expirationTime; + push(taskQueue, timer); + } else { + // Remaining timers are pending. + return; + } - /* eslint-disable no-var */ - exports.unstable_now = void 0; - var hasPerformanceNow = // $FlowFixMe[method-unbinding] - typeof performance === "object" && typeof performance.now === "function"; + timer = peek(timerQueue); + } +} - if (hasPerformanceNow) { - var localPerformance = performance; +function handleTimeout(currentTime) { + isHostTimeoutScheduled = false; + advanceTimers(currentTime); - exports.unstable_now = function () { - return localPerformance.now(); - }; + if (!isHostCallbackScheduled) { + if (peek(taskQueue) !== null) { + isHostCallbackScheduled = true; + requestHostCallback(); } else { - var localDate = Date; - var initialTime = localDate.now(); - - exports.unstable_now = function () { - return localDate.now() - initialTime; - }; - } // Max 31 bit integer. The max integer size in V8 for 32-bit systems. - // Math.pow(2, 30) - 1 - // 0b111111111111111111111111111111 - - var maxSigned31BitInt = 1073741823; // Tasks are stored on a min heap - - var taskQueue = []; - var timerQueue = []; // Incrementing id counter. Used to maintain insertion order. - - var taskIdCounter = 1; // Pausing the scheduler is useful for debugging. - var currentTask = null; - var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrance. - - var isPerformingWork = false; - var isHostCallbackScheduled = false; - var isHostTimeoutScheduled = false; // Capture local references to native APIs, in case a polyfill overrides them. - - var localSetTimeout = typeof setTimeout === "function" ? setTimeout : null; - var localClearTimeout = - typeof clearTimeout === "function" ? clearTimeout : null; - var localSetImmediate = - typeof setImmediate !== "undefined" ? setImmediate : null; // IE and Node.js + jsdom - - function advanceTimers(currentTime) { - // Check for tasks that are no longer delayed and add them to the queue. - var timer = peek(timerQueue); - - while (timer !== null) { - if (timer.callback === null) { - // Timer was cancelled. - pop(timerQueue); - } else if (timer.startTime <= currentTime) { - // Timer fired. Transfer to the task queue. - pop(timerQueue); - timer.sortIndex = timer.expirationTime; - push(taskQueue, timer); - } else { - // Remaining timers are pending. - return; - } + var firstTimer = peek(timerQueue); - timer = peek(timerQueue); - } - } - - function handleTimeout(currentTime) { - isHostTimeoutScheduled = false; - advanceTimers(currentTime); - - if (!isHostCallbackScheduled) { - if (peek(taskQueue) !== null) { - isHostCallbackScheduled = true; - requestHostCallback(); - } else { - var firstTimer = peek(timerQueue); - - if (firstTimer !== null) { - requestHostTimeout( - handleTimeout, - firstTimer.startTime - currentTime - ); - } - } + if (firstTimer !== null) { + requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); } } + } +} - function flushWork(initialTime) { - isHostCallbackScheduled = false; +function flushWork(initialTime) { - if (isHostTimeoutScheduled) { - // We scheduled a timeout but it's no longer needed. Cancel it. - isHostTimeoutScheduled = false; - cancelHostTimeout(); - } - isPerformingWork = true; - var previousPriorityLevel = currentPriorityLevel; + isHostCallbackScheduled = false; - try { - var currentTime; - if (enableProfiling); - else { - // No catch in prod code path. - return workLoop(initialTime); - } - } finally { - currentTask = null; - currentPriorityLevel = previousPriorityLevel; - isPerformingWork = false; - } - } + if (isHostTimeoutScheduled) { + // We scheduled a timeout but it's no longer needed. Cancel it. + isHostTimeoutScheduled = false; + cancelHostTimeout(); + } - function workLoop(initialTime) { - var currentTime = initialTime; - advanceTimers(currentTime); - currentTask = peek(taskQueue); + isPerformingWork = true; + var previousPriorityLevel = currentPriorityLevel; - while (currentTask !== null && !enableSchedulerDebugging) { - if (currentTask.expirationTime > currentTime && shouldYieldToHost()) { - // This currentTask hasn't expired, and we've reached the deadline. - break; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + try { + var currentTime; if (enableProfiling) ; else { + // No catch in prod code path. + return workLoop(initialTime); + } + } finally { + currentTask = null; + currentPriorityLevel = previousPriorityLevel; + isPerformingWork = false; + } +} - var callback = currentTask.callback; +function workLoop(initialTime) { + var currentTime = initialTime; + advanceTimers(currentTime); + currentTask = peek(taskQueue); - if (typeof callback === "function") { - // $FlowFixMe[incompatible-use] found when upgrading Flow - currentTask.callback = null; // $FlowFixMe[incompatible-use] found when upgrading Flow + while (currentTask !== null && !(enableSchedulerDebugging )) { + if (currentTask.expirationTime > currentTime && shouldYieldToHost()) { + // This currentTask hasn't expired, and we've reached the deadline. + break; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - currentPriorityLevel = currentTask.priorityLevel; // $FlowFixMe[incompatible-use] found when upgrading Flow - var didUserCallbackTimeout = - currentTask.expirationTime <= currentTime; + var callback = currentTask.callback; - var continuationCallback = callback(didUserCallbackTimeout); - currentTime = exports.unstable_now(); + if (typeof callback === 'function') { + // $FlowFixMe[incompatible-use] found when upgrading Flow + currentTask.callback = null; // $FlowFixMe[incompatible-use] found when upgrading Flow - if (typeof continuationCallback === "function") { - // If a continuation is returned, immediately yield to the main thread - // regardless of how much time is left in the current time slice. - // $FlowFixMe[incompatible-use] found when upgrading Flow - currentTask.callback = continuationCallback; + currentPriorityLevel = currentTask.priorityLevel; // $FlowFixMe[incompatible-use] found when upgrading Flow - advanceTimers(currentTime); - return true; - } else { - if (currentTask === peek(taskQueue)) { - pop(taskQueue); - } + var didUserCallbackTimeout = currentTask.expirationTime <= currentTime; - advanceTimers(currentTime); - } - } else { - pop(taskQueue); - } + var continuationCallback = callback(didUserCallbackTimeout); + currentTime = exports.unstable_now(); - currentTask = peek(taskQueue); - } // Return whether there's additional work + if (typeof continuationCallback === 'function') { + // If a continuation is returned, immediately yield to the main thread + // regardless of how much time is left in the current time slice. + // $FlowFixMe[incompatible-use] found when upgrading Flow + currentTask.callback = continuationCallback; - if (currentTask !== null) { + advanceTimers(currentTime); return true; } else { - var firstTimer = peek(timerQueue); - if (firstTimer !== null) { - requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); + if (currentTask === peek(taskQueue)) { + pop(taskQueue); } - return false; + advanceTimers(currentTime); } + } else { + pop(taskQueue); } - function unstable_runWithPriority(priorityLevel, eventHandler) { - switch (priorityLevel) { - case ImmediatePriority: - case UserBlockingPriority: - case NormalPriority: - case LowPriority: - case IdlePriority: - break; - - default: - priorityLevel = NormalPriority; - } + currentTask = peek(taskQueue); + } // Return whether there's additional work - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = priorityLevel; - try { - return eventHandler(); - } finally { - currentPriorityLevel = previousPriorityLevel; - } + if (currentTask !== null) { + return true; + } else { + var firstTimer = peek(timerQueue); + + if (firstTimer !== null) { + requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); } - function unstable_next(eventHandler) { - var priorityLevel; - - switch (currentPriorityLevel) { - case ImmediatePriority: - case UserBlockingPriority: - case NormalPriority: - // Shift down to normal priority - priorityLevel = NormalPriority; - break; - - default: - // Anything lower than normal priority should remain at the current level. - priorityLevel = currentPriorityLevel; - break; - } + return false; + } +} - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = priorityLevel; +function unstable_runWithPriority(priorityLevel, eventHandler) { + switch (priorityLevel) { + case ImmediatePriority: + case UserBlockingPriority: + case NormalPriority: + case LowPriority: + case IdlePriority: + break; + + default: + priorityLevel = NormalPriority; + } + + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = priorityLevel; + + try { + return eventHandler(); + } finally { + currentPriorityLevel = previousPriorityLevel; + } +} - try { - return eventHandler(); - } finally { - currentPriorityLevel = previousPriorityLevel; - } - } +function unstable_next(eventHandler) { + var priorityLevel; + + switch (currentPriorityLevel) { + case ImmediatePriority: + case UserBlockingPriority: + case NormalPriority: + // Shift down to normal priority + priorityLevel = NormalPriority; + break; + + default: + // Anything lower than normal priority should remain at the current level. + priorityLevel = currentPriorityLevel; + break; + } + + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = priorityLevel; + + try { + return eventHandler(); + } finally { + currentPriorityLevel = previousPriorityLevel; + } +} - function unstable_wrapCallback(callback) { - var parentPriorityLevel = currentPriorityLevel; // $FlowFixMe[incompatible-return] - // $FlowFixMe[missing-this-annot] +function unstable_wrapCallback(callback) { + var parentPriorityLevel = currentPriorityLevel; // $FlowFixMe[incompatible-return] + // $FlowFixMe[missing-this-annot] - return function () { - // This is a fork of runWithPriority, inlined for performance. - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = parentPriorityLevel; + return function () { + // This is a fork of runWithPriority, inlined for performance. + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = parentPriorityLevel; - try { - return callback.apply(this, arguments); - } finally { - currentPriorityLevel = previousPriorityLevel; - } - }; + try { + return callback.apply(this, arguments); + } finally { + currentPriorityLevel = previousPriorityLevel; } + }; +} - function unstable_scheduleCallback(priorityLevel, callback, options) { - var currentTime = exports.unstable_now(); - var startTime; +function unstable_scheduleCallback(priorityLevel, callback, options) { + var currentTime = exports.unstable_now(); + var startTime; - if (typeof options === "object" && options !== null) { - var delay = options.delay; + if (typeof options === 'object' && options !== null) { + var delay = options.delay; - if (typeof delay === "number" && delay > 0) { - startTime = currentTime + delay; - } else { - startTime = currentTime; - } + if (typeof delay === 'number' && delay > 0) { + startTime = currentTime + delay; + } else { + startTime = currentTime; + } + } else { + startTime = currentTime; + } + + var timeout; + + switch (priorityLevel) { + case ImmediatePriority: + // Times out immediately + timeout = -1; + break; + + case UserBlockingPriority: + // Eventually times out + timeout = userBlockingPriorityTimeout; + break; + + case IdlePriority: + // Never times out + timeout = maxSigned31BitInt; + break; + + case LowPriority: + // Eventually times out + timeout = lowPriorityTimeout; + break; + + case NormalPriority: + default: + // Eventually times out + timeout = normalPriorityTimeout; + break; + } + + var expirationTime = startTime + timeout; + var newTask = { + id: taskIdCounter++, + callback: callback, + priorityLevel: priorityLevel, + startTime: startTime, + expirationTime: expirationTime, + sortIndex: -1 + }; + + if (startTime > currentTime) { + // This is a delayed task. + newTask.sortIndex = startTime; + push(timerQueue, newTask); + + if (peek(taskQueue) === null && newTask === peek(timerQueue)) { + // All tasks are delayed, and this is the task with the earliest delay. + if (isHostTimeoutScheduled) { + // Cancel an existing timeout. + cancelHostTimeout(); } else { - startTime = currentTime; - } + isHostTimeoutScheduled = true; + } // Schedule a timeout. - var timeout; - - switch (priorityLevel) { - case ImmediatePriority: - // Times out immediately - timeout = -1; - break; - - case UserBlockingPriority: - // Eventually times out - timeout = userBlockingPriorityTimeout; - break; - - case IdlePriority: - // Never times out - timeout = maxSigned31BitInt; - break; - - case LowPriority: - // Eventually times out - timeout = lowPriorityTimeout; - break; - - case NormalPriority: - default: - // Eventually times out - timeout = normalPriorityTimeout; - break; - } - var expirationTime = startTime + timeout; - var newTask = { - id: taskIdCounter++, - callback: callback, - priorityLevel: priorityLevel, - startTime: startTime, - expirationTime: expirationTime, - sortIndex: -1 - }; - - if (startTime > currentTime) { - // This is a delayed task. - newTask.sortIndex = startTime; - push(timerQueue, newTask); - - if (peek(taskQueue) === null && newTask === peek(timerQueue)) { - // All tasks are delayed, and this is the task with the earliest delay. - if (isHostTimeoutScheduled) { - // Cancel an existing timeout. - cancelHostTimeout(); - } else { - isHostTimeoutScheduled = true; - } // Schedule a timeout. - - requestHostTimeout(handleTimeout, startTime - currentTime); - } - } else { - newTask.sortIndex = expirationTime; - push(taskQueue, newTask); - // wait until the next time we yield. + requestHostTimeout(handleTimeout, startTime - currentTime); + } + } else { + newTask.sortIndex = expirationTime; + push(taskQueue, newTask); + // wait until the next time we yield. - if (!isHostCallbackScheduled && !isPerformingWork) { - isHostCallbackScheduled = true; - requestHostCallback(); - } - } - return newTask; + if (!isHostCallbackScheduled && !isPerformingWork) { + isHostCallbackScheduled = true; + requestHostCallback(); } + } - function unstable_pauseExecution() {} + return newTask; +} - function unstable_continueExecution() { - if (!isHostCallbackScheduled && !isPerformingWork) { - isHostCallbackScheduled = true; - requestHostCallback(); - } - } +function unstable_pauseExecution() { +} - function unstable_getFirstCallbackNode() { - return peek(taskQueue); - } +function unstable_continueExecution() { - function unstable_cancelCallback(task) { - // remove from the queue because you can't remove arbitrary nodes from an - // array based heap, only the first one.) + if (!isHostCallbackScheduled && !isPerformingWork) { + isHostCallbackScheduled = true; + requestHostCallback(); + } +} - task.callback = null; - } +function unstable_getFirstCallbackNode() { + return peek(taskQueue); +} - function unstable_getCurrentPriorityLevel() { - return currentPriorityLevel; - } +function unstable_cancelCallback(task) { + // remove from the queue because you can't remove arbitrary nodes from an + // array based heap, only the first one.) - var isMessageLoopRunning = false; - var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main - // thread, like user events. By default, it yields multiple times per frame. - // It does not attempt to align with frame boundaries, since most tasks don't - // need to be frame aligned; for those that do, use requestAnimationFrame. - var frameInterval = frameYieldMs; - var startTime = -1; + task.callback = null; +} - function shouldYieldToHost() { - var timeElapsed = exports.unstable_now() - startTime; +function unstable_getCurrentPriorityLevel() { + return currentPriorityLevel; +} - if (timeElapsed < frameInterval) { - // The main thread has only been blocked for a really short amount of time; - // smaller than a single frame. Don't yield yet. - return false; - } // Yield now. +var isMessageLoopRunning = false; +var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main +// thread, like user events. By default, it yields multiple times per frame. +// It does not attempt to align with frame boundaries, since most tasks don't +// need to be frame aligned; for those that do, use requestAnimationFrame. - return true; - } +var frameInterval = frameYieldMs; +var startTime = -1; - function requestPaint() {} +function shouldYieldToHost() { + var timeElapsed = exports.unstable_now() - startTime; - function forceFrameRate(fps) { - if (fps < 0 || fps > 125) { - // Using console['error'] to evade Babel and ESLint - console["error"]( - "forceFrameRate takes a positive int between 0 and 125, " + - "forcing frame rates higher than 125 fps is not supported" - ); - return; - } + if (timeElapsed < frameInterval) { + // The main thread has only been blocked for a really short amount of time; + // smaller than a single frame. Don't yield yet. + return false; + } // Yield now. - if (fps > 0) { - frameInterval = Math.floor(1000 / fps); - } else { - // reset the framerate - frameInterval = frameYieldMs; - } - } - var performWorkUntilDeadline = function () { - if (isMessageLoopRunning) { - var currentTime = exports.unstable_now(); // Keep track of the start time so we can measure how long the main thread - // has been blocked. - - startTime = currentTime; // If a scheduler task throws, exit the current browser task so the - // error can be observed. - // - // Intentionally not using a try-catch, since that makes some debugging - // techniques harder. Instead, if `flushWork` errors, then `hasMoreWork` will - // remain true, and we'll continue the work loop. - - var hasMoreWork = true; - - try { - hasMoreWork = flushWork(currentTime); - } finally { - if (hasMoreWork) { - // If there's more work, schedule the next message event at the end - // of the preceding one. - schedulePerformWorkUntilDeadline(); - } else { - isMessageLoopRunning = false; - } - } - } - }; - - var schedulePerformWorkUntilDeadline; - - if (typeof localSetImmediate === "function") { - // Node.js and old IE. - // There's a few reasons for why we prefer setImmediate. - // - // Unlike MessageChannel, it doesn't prevent a Node.js process from exiting. - // (Even though this is a DOM fork of the Scheduler, you could get here - // with a mix of Node.js 15+, which has a MessageChannel, and jsdom.) - // https://github.com/facebook/react/issues/20756 - // - // But also, it runs earlier which is the semantic we want. - // If other browsers ever implement it, it's better to use it. - // Although both of these would be inferior to native scheduling. - schedulePerformWorkUntilDeadline = function () { - localSetImmediate(performWorkUntilDeadline); - }; - } else if (typeof MessageChannel !== "undefined") { - // DOM and Worker environments. - // We prefer MessageChannel because of the 4ms setTimeout clamping. - var channel = new MessageChannel(); - var port = channel.port2; - channel.port1.onmessage = performWorkUntilDeadline; - - schedulePerformWorkUntilDeadline = function () { - port.postMessage(null); - }; - } else { - // We should only fallback here in non-browser environments. - schedulePerformWorkUntilDeadline = function () { - // $FlowFixMe[not-a-function] nullable value - localSetTimeout(performWorkUntilDeadline, 0); - }; - } + return true; +} - function requestHostCallback() { - if (!isMessageLoopRunning) { - isMessageLoopRunning = true; +function requestPaint() {} + +function forceFrameRate(fps) { + if (fps < 0 || fps > 125) { + // Using console['error'] to evade Babel and ESLint + console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing frame rates higher than 125 fps is not supported'); + return; + } + + if (fps > 0) { + frameInterval = Math.floor(1000 / fps); + } else { + // reset the framerate + frameInterval = frameYieldMs; + } +} + +var performWorkUntilDeadline = function () { + if (isMessageLoopRunning) { + var currentTime = exports.unstable_now(); // Keep track of the start time so we can measure how long the main thread + // has been blocked. + + startTime = currentTime; // If a scheduler task throws, exit the current browser task so the + // error can be observed. + // + // Intentionally not using a try-catch, since that makes some debugging + // techniques harder. Instead, if `flushWork` errors, then `hasMoreWork` will + // remain true, and we'll continue the work loop. + + var hasMoreWork = true; + + try { + hasMoreWork = flushWork(currentTime); + } finally { + if (hasMoreWork) { + // If there's more work, schedule the next message event at the end + // of the preceding one. schedulePerformWorkUntilDeadline(); + } else { + isMessageLoopRunning = false; } } + } +}; + +var schedulePerformWorkUntilDeadline; + +if (typeof localSetImmediate === 'function') { + // Node.js and old IE. + // There's a few reasons for why we prefer setImmediate. + // + // Unlike MessageChannel, it doesn't prevent a Node.js process from exiting. + // (Even though this is a DOM fork of the Scheduler, you could get here + // with a mix of Node.js 15+, which has a MessageChannel, and jsdom.) + // https://github.com/facebook/react/issues/20756 + // + // But also, it runs earlier which is the semantic we want. + // If other browsers ever implement it, it's better to use it. + // Although both of these would be inferior to native scheduling. + schedulePerformWorkUntilDeadline = function () { + localSetImmediate(performWorkUntilDeadline); + }; +} else if (typeof MessageChannel !== 'undefined') { + // DOM and Worker environments. + // We prefer MessageChannel because of the 4ms setTimeout clamping. + var channel = new MessageChannel(); + var port = channel.port2; + channel.port1.onmessage = performWorkUntilDeadline; + + schedulePerformWorkUntilDeadline = function () { + port.postMessage(null); + }; +} else { + // We should only fallback here in non-browser environments. + schedulePerformWorkUntilDeadline = function () { + // $FlowFixMe[not-a-function] nullable value + localSetTimeout(performWorkUntilDeadline, 0); + }; +} - function requestHostTimeout(callback, ms) { - // $FlowFixMe[not-a-function] nullable value - taskTimeoutID = localSetTimeout(function () { - callback(exports.unstable_now()); - }, ms); - } +function requestHostCallback() { + if (!isMessageLoopRunning) { + isMessageLoopRunning = true; + schedulePerformWorkUntilDeadline(); + } +} - function cancelHostTimeout() { - // $FlowFixMe[not-a-function] nullable value - localClearTimeout(taskTimeoutID); - taskTimeoutID = -1; - } - var unstable_Profiling = null; - - exports.unstable_IdlePriority = IdlePriority; - exports.unstable_ImmediatePriority = ImmediatePriority; - exports.unstable_LowPriority = LowPriority; - exports.unstable_NormalPriority = NormalPriority; - exports.unstable_Profiling = unstable_Profiling; - exports.unstable_UserBlockingPriority = UserBlockingPriority; - exports.unstable_cancelCallback = unstable_cancelCallback; - exports.unstable_continueExecution = unstable_continueExecution; - exports.unstable_forceFrameRate = forceFrameRate; - exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel; - exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode; - exports.unstable_next = unstable_next; - exports.unstable_pauseExecution = unstable_pauseExecution; - exports.unstable_requestPaint = requestPaint; - exports.unstable_runWithPriority = unstable_runWithPriority; - exports.unstable_scheduleCallback = unstable_scheduleCallback; - exports.unstable_shouldYield = shouldYieldToHost; - exports.unstable_wrapCallback = unstable_wrapCallback; - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); - } +function requestHostTimeout(callback, ms) { + // $FlowFixMe[not-a-function] nullable value + taskTimeoutID = localSetTimeout(function () { + callback(exports.unstable_now()); + }, ms); +} + +function cancelHostTimeout() { + // $FlowFixMe[not-a-function] nullable value + localClearTimeout(taskTimeoutID); + taskTimeoutID = -1; +} +var unstable_Profiling = null; + +exports.unstable_IdlePriority = IdlePriority; +exports.unstable_ImmediatePriority = ImmediatePriority; +exports.unstable_LowPriority = LowPriority; +exports.unstable_NormalPriority = NormalPriority; +exports.unstable_Profiling = unstable_Profiling; +exports.unstable_UserBlockingPriority = UserBlockingPriority; +exports.unstable_cancelCallback = unstable_cancelCallback; +exports.unstable_continueExecution = unstable_continueExecution; +exports.unstable_forceFrameRate = forceFrameRate; +exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel; +exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode; +exports.unstable_next = unstable_next; +exports.unstable_pauseExecution = unstable_pauseExecution; +exports.unstable_requestPaint = requestPaint; +exports.unstable_runWithPriority = unstable_runWithPriority; +exports.unstable_scheduleCallback = unstable_scheduleCallback; +exports.unstable_shouldYield = shouldYieldToHost; +exports.unstable_wrapCallback = unstable_wrapCallback; + /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); +} + })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/SchedulerMock-dev.js b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/SchedulerMock-dev.js index ee132a7ae5b60..85105a6597576 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/SchedulerMock-dev.js +++ b/compiled-rn/facebook-fbsource/xplat/js/RKJSModules/vendor/scheduler/cjs/SchedulerMock-dev.js @@ -7,719 +7,707 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<<95b4127da8c85ba368ae54253ebfb7c6>> + * @generated SignedSource<> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; + (function() { +'use strict'; - var enableSchedulerDebugging = false; - var enableProfiling = false; +var enableSchedulerDebugging = false; +var enableProfiling = false; - function push(heap, node) { - var index = heap.length; - heap.push(node); - siftUp(heap, node, index); - } - function peek(heap) { - return heap.length === 0 ? null : heap[0]; - } - function pop(heap) { - if (heap.length === 0) { - return null; - } +function push(heap, node) { + var index = heap.length; + heap.push(node); + siftUp(heap, node, index); +} +function peek(heap) { + return heap.length === 0 ? null : heap[0]; +} +function pop(heap) { + if (heap.length === 0) { + return null; + } - var first = heap[0]; - var last = heap.pop(); + var first = heap[0]; + var last = heap.pop(); - if (last !== first) { - heap[0] = last; - siftDown(heap, last, 0); - } + if (last !== first) { + heap[0] = last; + siftDown(heap, last, 0); + } - return first; - } + return first; +} - function siftUp(heap, node, i) { - var index = i; - - while (index > 0) { - var parentIndex = (index - 1) >>> 1; - var parent = heap[parentIndex]; - - if (compare(parent, node) > 0) { - // The parent is larger. Swap positions. - heap[parentIndex] = node; - heap[index] = parent; - index = parentIndex; - } else { - // The parent is smaller. Exit. - return; - } - } - } +function siftUp(heap, node, i) { + var index = i; - function siftDown(heap, node, i) { - var index = i; - var length = heap.length; - var halfLength = length >>> 1; - - while (index < halfLength) { - var leftIndex = (index + 1) * 2 - 1; - var left = heap[leftIndex]; - var rightIndex = leftIndex + 1; - var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those. - - if (compare(left, node) < 0) { - if (rightIndex < length && compare(right, left) < 0) { - heap[index] = right; - heap[rightIndex] = node; - index = rightIndex; - } else { - heap[index] = left; - heap[leftIndex] = node; - index = leftIndex; - } - } else if (rightIndex < length && compare(right, node) < 0) { - heap[index] = right; - heap[rightIndex] = node; - index = rightIndex; - } else { - // Neither child is smaller. Exit. - return; - } - } - } + while (index > 0) { + var parentIndex = index - 1 >>> 1; + var parent = heap[parentIndex]; - function compare(a, b) { - // Compare sort index first, then task id. - var diff = a.sortIndex - b.sortIndex; - return diff !== 0 ? diff : a.id - b.id; + if (compare(parent, node) > 0) { + // The parent is larger. Swap positions. + heap[parentIndex] = node; + heap[index] = parent; + index = parentIndex; + } else { + // The parent is smaller. Exit. + return; } + } +} - // TODO: Use symbols? - var ImmediatePriority = 1; - var UserBlockingPriority = 2; - var NormalPriority = 3; - var LowPriority = 4; - var IdlePriority = 5; - - function markTaskErrored(task, ms) {} - - /* eslint-disable no-var */ - // Math.pow(2, 30) - 1 - // 0b111111111111111111111111111111 - - var maxSigned31BitInt = 1073741823; // Times out immediately - - var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out - - var USER_BLOCKING_PRIORITY_TIMEOUT = 250; - var NORMAL_PRIORITY_TIMEOUT = 5000; - var LOW_PRIORITY_TIMEOUT = 10000; // Never times out - - var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap - - var taskQueue = []; - var timerQueue = []; // Incrementing id counter. Used to maintain insertion order. - - var taskIdCounter = 1; // Pausing the scheduler is useful for debugging. - var currentTask = null; - var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrance. - - var isPerformingWork = false; - var isHostCallbackScheduled = false; - var isHostTimeoutScheduled = false; - var currentMockTime = 0; - var scheduledCallback = null; - var scheduledTimeout = null; - var timeoutTime = -1; - var yieldedValues = null; - var expectedNumberOfYields = -1; - var didStop = false; - var isFlushing = false; - var needsPaint = false; - var shouldYieldForPaint = false; - var disableYieldValue = false; - - function setDisableYieldValue(newValue) { - disableYieldValue = newValue; - } +function siftDown(heap, node, i) { + var index = i; + var length = heap.length; + var halfLength = length >>> 1; + + while (index < halfLength) { + var leftIndex = (index + 1) * 2 - 1; + var left = heap[leftIndex]; + var rightIndex = leftIndex + 1; + var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those. + + if (compare(left, node) < 0) { + if (rightIndex < length && compare(right, left) < 0) { + heap[index] = right; + heap[rightIndex] = node; + index = rightIndex; + } else { + heap[index] = left; + heap[leftIndex] = node; + index = leftIndex; + } + } else if (rightIndex < length && compare(right, node) < 0) { + heap[index] = right; + heap[rightIndex] = node; + index = rightIndex; + } else { + // Neither child is smaller. Exit. + return; + } + } +} - function advanceTimers(currentTime) { - // Check for tasks that are no longer delayed and add them to the queue. - var timer = peek(timerQueue); - - while (timer !== null) { - if (timer.callback === null) { - // Timer was cancelled. - pop(timerQueue); - } else if (timer.startTime <= currentTime) { - // Timer fired. Transfer to the task queue. - pop(timerQueue); - timer.sortIndex = timer.expirationTime; - push(taskQueue, timer); - } else { - // Remaining timers are pending. - return; - } +function compare(a, b) { + // Compare sort index first, then task id. + var diff = a.sortIndex - b.sortIndex; + return diff !== 0 ? diff : a.id - b.id; +} - timer = peek(timerQueue); - } - } +// TODO: Use symbols? +var ImmediatePriority = 1; +var UserBlockingPriority = 2; +var NormalPriority = 3; +var LowPriority = 4; +var IdlePriority = 5; - function handleTimeout(currentTime) { - isHostTimeoutScheduled = false; - advanceTimers(currentTime); - - if (!isHostCallbackScheduled) { - if (peek(taskQueue) !== null) { - isHostCallbackScheduled = true; - requestHostCallback(flushWork); - } else { - var firstTimer = peek(timerQueue); - - if (firstTimer !== null) { - requestHostTimeout( - handleTimeout, - firstTimer.startTime - currentTime - ); - } - } - } - } +function markTaskErrored(task, ms) { +} - function flushWork(hasTimeRemaining, initialTime) { - isHostCallbackScheduled = false; +/* eslint-disable no-var */ +// Math.pow(2, 30) - 1 +// 0b111111111111111111111111111111 - if (isHostTimeoutScheduled) { - // We scheduled a timeout but it's no longer needed. Cancel it. - isHostTimeoutScheduled = false; - cancelHostTimeout(); - } +var maxSigned31BitInt = 1073741823; // Times out immediately - isPerformingWork = true; - var previousPriorityLevel = currentPriorityLevel; +var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out - try { - var currentTime; - if (enableProfiling); - else { - // No catch in prod code path. - return workLoop(hasTimeRemaining, initialTime); - } - } finally { - currentTask = null; - currentPriorityLevel = previousPriorityLevel; - isPerformingWork = false; - } - } +var USER_BLOCKING_PRIORITY_TIMEOUT = 250; +var NORMAL_PRIORITY_TIMEOUT = 5000; +var LOW_PRIORITY_TIMEOUT = 10000; // Never times out - function workLoop(hasTimeRemaining, initialTime) { - var currentTime = initialTime; - advanceTimers(currentTime); - currentTask = peek(taskQueue); - - while (currentTask !== null && !enableSchedulerDebugging) { - if ( - currentTask.expirationTime > currentTime && - (!hasTimeRemaining || shouldYieldToHost()) - ) { - // This currentTask hasn't expired, and we've reached the deadline. - break; - } // $FlowFixMe[incompatible-use] found when upgrading Flow - - var callback = currentTask.callback; - - if (typeof callback === "function") { - // $FlowFixMe[incompatible-use] found when upgrading Flow - currentTask.callback = null; // $FlowFixMe[incompatible-use] found when upgrading Flow - - currentPriorityLevel = currentTask.priorityLevel; // $FlowFixMe[incompatible-use] found when upgrading Flow - - var didUserCallbackTimeout = - currentTask.expirationTime <= currentTime; - - var continuationCallback = callback(didUserCallbackTimeout); - currentTime = getCurrentTime(); - - if (typeof continuationCallback === "function") { - // If a continuation is returned, immediately yield to the main thread - // regardless of how much time is left in the current time slice. - // $FlowFixMe[incompatible-use] found when upgrading Flow - currentTask.callback = continuationCallback; - - advanceTimers(currentTime); - - if (shouldYieldForPaint) { - needsPaint = true; - return true; - } - } else { - if (currentTask === peek(taskQueue)) { - pop(taskQueue); - } - - advanceTimers(currentTime); - } - } else { - pop(taskQueue); - } +var IDLE_PRIORITY_TIMEOUT = maxSigned31BitInt; // Tasks are stored on a min heap - currentTask = peek(taskQueue); - } // Return whether there's additional work +var taskQueue = []; +var timerQueue = []; // Incrementing id counter. Used to maintain insertion order. - if (currentTask !== null) { - return true; - } else { - var firstTimer = peek(timerQueue); +var taskIdCounter = 1; // Pausing the scheduler is useful for debugging. +var currentTask = null; +var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrance. - if (firstTimer !== null) { - requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); - } +var isPerformingWork = false; +var isHostCallbackScheduled = false; +var isHostTimeoutScheduled = false; +var currentMockTime = 0; +var scheduledCallback = null; +var scheduledTimeout = null; +var timeoutTime = -1; +var yieldedValues = null; +var expectedNumberOfYields = -1; +var didStop = false; +var isFlushing = false; +var needsPaint = false; +var shouldYieldForPaint = false; +var disableYieldValue = false; - return false; - } - } +function setDisableYieldValue(newValue) { + disableYieldValue = newValue; +} - function unstable_runWithPriority(priorityLevel, eventHandler) { - switch (priorityLevel) { - case ImmediatePriority: - case UserBlockingPriority: - case NormalPriority: - case LowPriority: - case IdlePriority: - break; - - default: - priorityLevel = NormalPriority; - } +function advanceTimers(currentTime) { + // Check for tasks that are no longer delayed and add them to the queue. + var timer = peek(timerQueue); + + while (timer !== null) { + if (timer.callback === null) { + // Timer was cancelled. + pop(timerQueue); + } else if (timer.startTime <= currentTime) { + // Timer fired. Transfer to the task queue. + pop(timerQueue); + timer.sortIndex = timer.expirationTime; + push(taskQueue, timer); + } else { + // Remaining timers are pending. + return; + } + + timer = peek(timerQueue); + } +} - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = priorityLevel; +function handleTimeout(currentTime) { + isHostTimeoutScheduled = false; + advanceTimers(currentTime); - try { - return eventHandler(); - } finally { - currentPriorityLevel = previousPriorityLevel; + if (!isHostCallbackScheduled) { + if (peek(taskQueue) !== null) { + isHostCallbackScheduled = true; + requestHostCallback(flushWork); + } else { + var firstTimer = peek(timerQueue); + + if (firstTimer !== null) { + requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); } } + } +} - function unstable_next(eventHandler) { - var priorityLevel; - - switch (currentPriorityLevel) { - case ImmediatePriority: - case UserBlockingPriority: - case NormalPriority: - // Shift down to normal priority - priorityLevel = NormalPriority; - break; - - default: - // Anything lower than normal priority should remain at the current level. - priorityLevel = currentPriorityLevel; - break; - } +function flushWork(hasTimeRemaining, initialTime) { - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = priorityLevel; - try { - return eventHandler(); - } finally { - currentPriorityLevel = previousPriorityLevel; - } - } + isHostCallbackScheduled = false; - function unstable_wrapCallback(callback) { - var parentPriorityLevel = currentPriorityLevel; // $FlowFixMe[incompatible-return] - // $FlowFixMe[missing-this-annot] + if (isHostTimeoutScheduled) { + // We scheduled a timeout but it's no longer needed. Cancel it. + isHostTimeoutScheduled = false; + cancelHostTimeout(); + } - return function () { - // This is a fork of runWithPriority, inlined for performance. - var previousPriorityLevel = currentPriorityLevel; - currentPriorityLevel = parentPriorityLevel; + isPerformingWork = true; + var previousPriorityLevel = currentPriorityLevel; - try { - return callback.apply(this, arguments); - } finally { - currentPriorityLevel = previousPriorityLevel; - } - }; + try { + var currentTime; if (enableProfiling) ; else { + // No catch in prod code path. + return workLoop(hasTimeRemaining, initialTime); } + } finally { + currentTask = null; + currentPriorityLevel = previousPriorityLevel; + isPerformingWork = false; + } +} - function unstable_scheduleCallback(priorityLevel, callback, options) { - var currentTime = getCurrentTime(); - var startTime; +function workLoop(hasTimeRemaining, initialTime) { + var currentTime = initialTime; + advanceTimers(currentTime); + currentTask = peek(taskQueue); - if (typeof options === "object" && options !== null) { - var delay = options.delay; + while (currentTask !== null && !(enableSchedulerDebugging )) { + if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) { + // This currentTask hasn't expired, and we've reached the deadline. + break; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - if (typeof delay === "number" && delay > 0) { - startTime = currentTime + delay; - } else { - startTime = currentTime; - } - } else { - startTime = currentTime; - } - var timeout; + var callback = currentTask.callback; - switch (priorityLevel) { - case ImmediatePriority: - timeout = IMMEDIATE_PRIORITY_TIMEOUT; - break; + if (typeof callback === 'function') { + // $FlowFixMe[incompatible-use] found when upgrading Flow + currentTask.callback = null; // $FlowFixMe[incompatible-use] found when upgrading Flow - case UserBlockingPriority: - timeout = USER_BLOCKING_PRIORITY_TIMEOUT; - break; + currentPriorityLevel = currentTask.priorityLevel; // $FlowFixMe[incompatible-use] found when upgrading Flow - case IdlePriority: - timeout = IDLE_PRIORITY_TIMEOUT; - break; + var didUserCallbackTimeout = currentTask.expirationTime <= currentTime; - case LowPriority: - timeout = LOW_PRIORITY_TIMEOUT; - break; + var continuationCallback = callback(didUserCallbackTimeout); + currentTime = getCurrentTime(); - case NormalPriority: - default: - timeout = NORMAL_PRIORITY_TIMEOUT; - break; - } + if (typeof continuationCallback === 'function') { + // If a continuation is returned, immediately yield to the main thread + // regardless of how much time is left in the current time slice. + // $FlowFixMe[incompatible-use] found when upgrading Flow + currentTask.callback = continuationCallback; + + advanceTimers(currentTime); - var expirationTime = startTime + timeout; - var newTask = { - id: taskIdCounter++, - callback: callback, - priorityLevel: priorityLevel, - startTime: startTime, - expirationTime: expirationTime, - sortIndex: -1 - }; - - if (startTime > currentTime) { - // This is a delayed task. - newTask.sortIndex = startTime; - push(timerQueue, newTask); - - if (peek(taskQueue) === null && newTask === peek(timerQueue)) { - // All tasks are delayed, and this is the task with the earliest delay. - if (isHostTimeoutScheduled) { - // Cancel an existing timeout. - cancelHostTimeout(); - } else { - isHostTimeoutScheduled = true; - } // Schedule a timeout. - - requestHostTimeout(handleTimeout, startTime - currentTime); + if (shouldYieldForPaint) { + needsPaint = true; + return true; } } else { - newTask.sortIndex = expirationTime; - push(taskQueue, newTask); - // wait until the next time we yield. - if (!isHostCallbackScheduled && !isPerformingWork) { - isHostCallbackScheduled = true; - requestHostCallback(flushWork); + if (currentTask === peek(taskQueue)) { + pop(taskQueue); } - } - return newTask; + advanceTimers(currentTime); + } + } else { + pop(taskQueue); } - function unstable_pauseExecution() {} + currentTask = peek(taskQueue); + } // Return whether there's additional work - function unstable_continueExecution() { - if (!isHostCallbackScheduled && !isPerformingWork) { - isHostCallbackScheduled = true; - requestHostCallback(flushWork); - } - } - function unstable_getFirstCallbackNode() { - return peek(taskQueue); + if (currentTask !== null) { + return true; + } else { + var firstTimer = peek(timerQueue); + + if (firstTimer !== null) { + requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime); } - function unstable_cancelCallback(task) { - // remove from the queue because you can't remove arbitrary nodes from an - // array based heap, only the first one.) + return false; + } +} - task.callback = null; - } +function unstable_runWithPriority(priorityLevel, eventHandler) { + switch (priorityLevel) { + case ImmediatePriority: + case UserBlockingPriority: + case NormalPriority: + case LowPriority: + case IdlePriority: + break; + + default: + priorityLevel = NormalPriority; + } + + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = priorityLevel; + + try { + return eventHandler(); + } finally { + currentPriorityLevel = previousPriorityLevel; + } +} - function unstable_getCurrentPriorityLevel() { - return currentPriorityLevel; - } +function unstable_next(eventHandler) { + var priorityLevel; + + switch (currentPriorityLevel) { + case ImmediatePriority: + case UserBlockingPriority: + case NormalPriority: + // Shift down to normal priority + priorityLevel = NormalPriority; + break; + + default: + // Anything lower than normal priority should remain at the current level. + priorityLevel = currentPriorityLevel; + break; + } + + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = priorityLevel; + + try { + return eventHandler(); + } finally { + currentPriorityLevel = previousPriorityLevel; + } +} - function requestHostCallback(callback) { - scheduledCallback = callback; - } +function unstable_wrapCallback(callback) { + var parentPriorityLevel = currentPriorityLevel; // $FlowFixMe[incompatible-return] + // $FlowFixMe[missing-this-annot] - function requestHostTimeout(callback, ms) { - scheduledTimeout = callback; - timeoutTime = currentMockTime + ms; - } + return function () { + // This is a fork of runWithPriority, inlined for performance. + var previousPriorityLevel = currentPriorityLevel; + currentPriorityLevel = parentPriorityLevel; - function cancelHostTimeout() { - scheduledTimeout = null; - timeoutTime = -1; + try { + return callback.apply(this, arguments); + } finally { + currentPriorityLevel = previousPriorityLevel; } + }; +} - function shouldYieldToHost() { - if ( - (expectedNumberOfYields === 0 && yieldedValues === null) || - (expectedNumberOfYields !== -1 && - yieldedValues !== null && - yieldedValues.length >= expectedNumberOfYields) || - (shouldYieldForPaint && needsPaint) - ) { - // We yielded at least as many values as expected. Stop flushing. - didStop = true; - return true; - } +function unstable_scheduleCallback(priorityLevel, callback, options) { + var currentTime = getCurrentTime(); + var startTime; + + if (typeof options === 'object' && options !== null) { + var delay = options.delay; + + if (typeof delay === 'number' && delay > 0) { + startTime = currentTime + delay; + } else { + startTime = currentTime; + } + } else { + startTime = currentTime; + } + + var timeout; + + switch (priorityLevel) { + case ImmediatePriority: + timeout = IMMEDIATE_PRIORITY_TIMEOUT; + break; + + case UserBlockingPriority: + timeout = USER_BLOCKING_PRIORITY_TIMEOUT; + break; + + case IdlePriority: + timeout = IDLE_PRIORITY_TIMEOUT; + break; + + case LowPriority: + timeout = LOW_PRIORITY_TIMEOUT; + break; + + case NormalPriority: + default: + timeout = NORMAL_PRIORITY_TIMEOUT; + break; + } + + var expirationTime = startTime + timeout; + var newTask = { + id: taskIdCounter++, + callback: callback, + priorityLevel: priorityLevel, + startTime: startTime, + expirationTime: expirationTime, + sortIndex: -1 + }; + + if (startTime > currentTime) { + // This is a delayed task. + newTask.sortIndex = startTime; + push(timerQueue, newTask); + + if (peek(taskQueue) === null && newTask === peek(timerQueue)) { + // All tasks are delayed, and this is the task with the earliest delay. + if (isHostTimeoutScheduled) { + // Cancel an existing timeout. + cancelHostTimeout(); + } else { + isHostTimeoutScheduled = true; + } // Schedule a timeout. - return false; - } - function getCurrentTime() { - return currentMockTime; + requestHostTimeout(handleTimeout, startTime - currentTime); } + } else { + newTask.sortIndex = expirationTime; + push(taskQueue, newTask); + // wait until the next time we yield. + - function forceFrameRate() { - // No-op + if (!isHostCallbackScheduled && !isPerformingWork) { + isHostCallbackScheduled = true; + requestHostCallback(flushWork); } + } - function reset() { - if (isFlushing) { - throw new Error("Cannot reset while already flushing work."); - } + return newTask; +} - currentMockTime = 0; - scheduledCallback = null; - scheduledTimeout = null; - timeoutTime = -1; - yieldedValues = null; - expectedNumberOfYields = -1; - didStop = false; - isFlushing = false; - needsPaint = false; - } // Should only be used via an assertion helper that inspects the yielded values. +function unstable_pauseExecution() { +} - function unstable_flushNumberOfYields(count) { - if (isFlushing) { - throw new Error("Already flushing work."); - } +function unstable_continueExecution() { - if (scheduledCallback !== null) { - var cb = scheduledCallback; - expectedNumberOfYields = count; - isFlushing = true; - - try { - var hasMoreWork = true; - - do { - hasMoreWork = cb(true, currentMockTime); - } while (hasMoreWork && !didStop); - - if (!hasMoreWork) { - scheduledCallback = null; - } - } finally { - expectedNumberOfYields = -1; - didStop = false; - isFlushing = false; - } - } - } + if (!isHostCallbackScheduled && !isPerformingWork) { + isHostCallbackScheduled = true; + requestHostCallback(flushWork); + } +} - function unstable_flushUntilNextPaint() { - if (isFlushing) { - throw new Error("Already flushing work."); - } +function unstable_getFirstCallbackNode() { + return peek(taskQueue); +} - if (scheduledCallback !== null) { - var cb = scheduledCallback; - shouldYieldForPaint = true; - needsPaint = false; - isFlushing = true; - - try { - var hasMoreWork = true; - - do { - hasMoreWork = cb(true, currentMockTime); - } while (hasMoreWork && !didStop); - - if (!hasMoreWork) { - scheduledCallback = null; - } - } finally { - shouldYieldForPaint = false; - didStop = false; - isFlushing = false; - } - } +function unstable_cancelCallback(task) { + // remove from the queue because you can't remove arbitrary nodes from an + // array based heap, only the first one.) - return false; - } - function unstable_hasPendingWork() { - return scheduledCallback !== null; - } + task.callback = null; +} - function unstable_flushExpired() { - if (isFlushing) { - throw new Error("Already flushing work."); - } +function unstable_getCurrentPriorityLevel() { + return currentPriorityLevel; +} + +function requestHostCallback(callback) { + scheduledCallback = callback; +} - if (scheduledCallback !== null) { - isFlushing = true; +function requestHostTimeout(callback, ms) { + scheduledTimeout = callback; + timeoutTime = currentMockTime + ms; +} - try { - var hasMoreWork = scheduledCallback(false, currentMockTime); +function cancelHostTimeout() { + scheduledTimeout = null; + timeoutTime = -1; +} - if (!hasMoreWork) { - scheduledCallback = null; - } - } finally { - isFlushing = false; - } - } - } +function shouldYieldToHost() { + if (expectedNumberOfYields === 0 && yieldedValues === null || expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) { + // We yielded at least as many values as expected. Stop flushing. + didStop = true; + return true; + } - function unstable_flushAllWithoutAsserting() { - // Returns false if no work was flushed. - if (isFlushing) { - throw new Error("Already flushing work."); - } + return false; +} - if (scheduledCallback !== null) { - var cb = scheduledCallback; - isFlushing = true; +function getCurrentTime() { + return currentMockTime; +} - try { - var hasMoreWork = true; +function forceFrameRate() {// No-op +} - do { - hasMoreWork = cb(true, currentMockTime); - } while (hasMoreWork); +function reset() { + if (isFlushing) { + throw new Error('Cannot reset while already flushing work.'); + } - if (!hasMoreWork) { - scheduledCallback = null; - } + currentMockTime = 0; + scheduledCallback = null; + scheduledTimeout = null; + timeoutTime = -1; + yieldedValues = null; + expectedNumberOfYields = -1; + didStop = false; + isFlushing = false; + needsPaint = false; +} // Should only be used via an assertion helper that inspects the yielded values. - return true; - } finally { - isFlushing = false; - } - } else { - return false; + +function unstable_flushNumberOfYields(count) { + if (isFlushing) { + throw new Error('Already flushing work.'); + } + + if (scheduledCallback !== null) { + var cb = scheduledCallback; + expectedNumberOfYields = count; + isFlushing = true; + + try { + var hasMoreWork = true; + + do { + hasMoreWork = cb(true, currentMockTime); + } while (hasMoreWork && !didStop); + + if (!hasMoreWork) { + scheduledCallback = null; } + } finally { + expectedNumberOfYields = -1; + didStop = false; + isFlushing = false; } + } +} - function unstable_clearLog() { - if (yieldedValues === null) { - return []; - } +function unstable_flushUntilNextPaint() { + if (isFlushing) { + throw new Error('Already flushing work.'); + } - var values = yieldedValues; - yieldedValues = null; - return values; - } + if (scheduledCallback !== null) { + var cb = scheduledCallback; + shouldYieldForPaint = true; + needsPaint = false; + isFlushing = true; - function unstable_flushAll() { - if (yieldedValues !== null) { - throw new Error( - "Log is not empty. Assert on the log of yielded values before " + - "flushing additional work." - ); - } + try { + var hasMoreWork = true; - unstable_flushAllWithoutAsserting(); + do { + hasMoreWork = cb(true, currentMockTime); + } while (hasMoreWork && !didStop); - if (yieldedValues !== null) { - throw new Error( - "While flushing work, something yielded a value. Use an " + - "assertion helper to assert on the log of yielded values, e.g. " + - "expect(Scheduler).toFlushAndYield([...])" - ); + if (!hasMoreWork) { + scheduledCallback = null; } + } finally { + shouldYieldForPaint = false; + didStop = false; + isFlushing = false; } + } - function log(value) { - // eslint-disable-next-line react-internal/no-production-logging - if (console.log.name === "disabledLog" || disableYieldValue) { - // If console.log has been patched, we assume we're in render - // replaying and we ignore any values yielding in the second pass. - return; - } + return false; +} - if (yieldedValues === null) { - yieldedValues = [value]; - } else { - yieldedValues.push(value); +function unstable_hasPendingWork() { + return scheduledCallback !== null; +} + +function unstable_flushExpired() { + if (isFlushing) { + throw new Error('Already flushing work.'); + } + + if (scheduledCallback !== null) { + isFlushing = true; + + try { + var hasMoreWork = scheduledCallback(false, currentMockTime); + + if (!hasMoreWork) { + scheduledCallback = null; } + } finally { + isFlushing = false; } + } +} - function unstable_advanceTime(ms) { - // eslint-disable-next-line react-internal/no-production-logging - if (console.log.name === "disabledLog" || disableYieldValue) { - // If console.log has been patched, we assume we're in render - // replaying and we ignore any time advancing in the second pass. - return; - } +function unstable_flushAllWithoutAsserting() { + // Returns false if no work was flushed. + if (isFlushing) { + throw new Error('Already flushing work.'); + } - currentMockTime += ms; + if (scheduledCallback !== null) { + var cb = scheduledCallback; + isFlushing = true; - if (scheduledTimeout !== null && timeoutTime <= currentMockTime) { - scheduledTimeout(currentMockTime); - timeoutTime = -1; - scheduledTimeout = null; + try { + var hasMoreWork = true; + + do { + hasMoreWork = cb(true, currentMockTime); + } while (hasMoreWork); + + if (!hasMoreWork) { + scheduledCallback = null; } - } - function requestPaint() { - needsPaint = true; + return true; + } finally { + isFlushing = false; } - var unstable_Profiling = null; - - exports.log = log; - exports.reset = reset; - exports.unstable_IdlePriority = IdlePriority; - exports.unstable_ImmediatePriority = ImmediatePriority; - exports.unstable_LowPriority = LowPriority; - exports.unstable_NormalPriority = NormalPriority; - exports.unstable_Profiling = unstable_Profiling; - exports.unstable_UserBlockingPriority = UserBlockingPriority; - exports.unstable_advanceTime = unstable_advanceTime; - exports.unstable_cancelCallback = unstable_cancelCallback; - exports.unstable_clearLog = unstable_clearLog; - exports.unstable_continueExecution = unstable_continueExecution; - exports.unstable_flushAll = unstable_flushAll; - exports.unstable_flushAllWithoutAsserting = - unstable_flushAllWithoutAsserting; - exports.unstable_flushExpired = unstable_flushExpired; - exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields; - exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint; - exports.unstable_forceFrameRate = forceFrameRate; - exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel; - exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode; - exports.unstable_hasPendingWork = unstable_hasPendingWork; - exports.unstable_next = unstable_next; - exports.unstable_now = getCurrentTime; - exports.unstable_pauseExecution = unstable_pauseExecution; - exports.unstable_requestPaint = requestPaint; - exports.unstable_runWithPriority = unstable_runWithPriority; - exports.unstable_scheduleCallback = unstable_scheduleCallback; - exports.unstable_setDisableYieldValue = setDisableYieldValue; - exports.unstable_shouldYield = shouldYieldToHost; - exports.unstable_wrapCallback = unstable_wrapCallback; + } else { + return false; + } +} + +function unstable_clearLog() { + if (yieldedValues === null) { + return []; + } + + var values = yieldedValues; + yieldedValues = null; + return values; +} + +function unstable_flushAll() { + if (yieldedValues !== null) { + throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.'); + } + + unstable_flushAllWithoutAsserting(); + + if (yieldedValues !== null) { + throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])'); + } +} + +function log(value) { + // eslint-disable-next-line react-internal/no-production-logging + if (console.log.name === 'disabledLog' || disableYieldValue) { + // If console.log has been patched, we assume we're in render + // replaying and we ignore any values yielding in the second pass. + return; + } + + if (yieldedValues === null) { + yieldedValues = [value]; + } else { + yieldedValues.push(value); + } +} + +function unstable_advanceTime(ms) { + // eslint-disable-next-line react-internal/no-production-logging + if (console.log.name === 'disabledLog' || disableYieldValue) { + // If console.log has been patched, we assume we're in render + // replaying and we ignore any time advancing in the second pass. + return; + } + + currentMockTime += ms; + + if (scheduledTimeout !== null && timeoutTime <= currentMockTime) { + scheduledTimeout(currentMockTime); + timeoutTime = -1; + scheduledTimeout = null; + } +} + +function requestPaint() { + needsPaint = true; +} +var unstable_Profiling = null; + +exports.log = log; +exports.reset = reset; +exports.unstable_IdlePriority = IdlePriority; +exports.unstable_ImmediatePriority = ImmediatePriority; +exports.unstable_LowPriority = LowPriority; +exports.unstable_NormalPriority = NormalPriority; +exports.unstable_Profiling = unstable_Profiling; +exports.unstable_UserBlockingPriority = UserBlockingPriority; +exports.unstable_advanceTime = unstable_advanceTime; +exports.unstable_cancelCallback = unstable_cancelCallback; +exports.unstable_clearLog = unstable_clearLog; +exports.unstable_continueExecution = unstable_continueExecution; +exports.unstable_flushAll = unstable_flushAll; +exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting; +exports.unstable_flushExpired = unstable_flushExpired; +exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields; +exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint; +exports.unstable_forceFrameRate = forceFrameRate; +exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel; +exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode; +exports.unstable_hasPendingWork = unstable_hasPendingWork; +exports.unstable_next = unstable_next; +exports.unstable_now = getCurrentTime; +exports.unstable_pauseExecution = unstable_pauseExecution; +exports.unstable_requestPaint = requestPaint; +exports.unstable_runWithPriority = unstable_runWithPriority; +exports.unstable_scheduleCallback = unstable_scheduleCallback; +exports.unstable_setDisableYieldValue = setDisableYieldValue; +exports.unstable_shouldYield = shouldYieldToHost; +exports.unstable_wrapCallback = unstable_wrapCallback; })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION index 334e9bbfa3444..35fd39d997422 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION +++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION @@ -1 +1 @@ -f5ce642deed7c74c5ae5df54ec4340a8d028eac9 +0e0b69321a6fcfe8a3eaae3b1016beb110437b38 diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js index 59246472fea1c..51237bb013871 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js +++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactFabric-dev.fb.js @@ -7,1411 +7,1273 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<<84d884f07a1d5851f53652012b257860>> + * @generated SignedSource<> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; - - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); - } - require("react-native/Libraries/ReactPrivate/ReactNativePrivateInitializeCore"); - var React = require("react"); - var ReactNativePrivateInterface = require("react-native/Libraries/ReactPrivate/ReactNativePrivateInterface"); - var dynamicFlagsUntyped = require("ReactNativeInternalFeatureFlags"); - var Scheduler = require("scheduler"); - - var ReactSharedInternals = - React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; - - var suppressWarning = false; - function setSuppressWarning(newSuppressWarning) { - { - suppressWarning = newSuppressWarning; - } - } // In DEV, calls to console.warn and console.error get replaced - // by calls to these methods by a Babel plugin. - // - // In PROD (or in packages without access to React internals), - // they are left as they are instead. + (function() { - function warn(format) { - { - if (!suppressWarning) { - for ( - var _len = arguments.length, - args = new Array(_len > 1 ? _len - 1 : 0), - _key = 1; - _key < _len; - _key++ - ) { - args[_key - 1] = arguments[_key]; - } + 'use strict'; - printWarning("warn", format, args); - } +/* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); +} + require('react-native/Libraries/ReactPrivate/ReactNativePrivateInitializeCore'); +var React = require('react'); +var ReactNativePrivateInterface = require('react-native/Libraries/ReactPrivate/ReactNativePrivateInterface'); +var dynamicFlagsUntyped = require('ReactNativeInternalFeatureFlags'); +var Scheduler = require('scheduler'); + +var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; + +var suppressWarning = false; +function setSuppressWarning(newSuppressWarning) { + { + suppressWarning = newSuppressWarning; + } +} // In DEV, calls to console.warn and console.error get replaced +// by calls to these methods by a Babel plugin. +// +// In PROD (or in packages without access to React internals), +// they are left as they are instead. + +function warn(format) { + { + if (!suppressWarning) { + for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; + } + + printWarning('warn', format, args); + } + } +} +function error(format) { + { + if (!suppressWarning) { + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + args[_key2 - 1] = arguments[_key2]; } - } - function error(format) { - { - if (!suppressWarning) { - for ( - var _len2 = arguments.length, - args = new Array(_len2 > 1 ? _len2 - 1 : 0), - _key2 = 1; - _key2 < _len2; - _key2++ - ) { - args[_key2 - 1] = arguments[_key2]; - } - printWarning("error", format, args); - } - } + printWarning('error', format, args); } + } +} - function printWarning(level, format, args) { - // When changing this logic, you might want to also - // update consoleWithStackDev.www.js as well. - { - var stack = ReactSharedInternals.getStackAddendum(); +function printWarning(level, format, args) { + // When changing this logic, you might want to also + // update consoleWithStackDev.www.js as well. + { + var stack = ReactSharedInternals.getStackAddendum(); - if (stack !== "") { - format += "%s"; - args = args.concat([stack]); - } // eslint-disable-next-line react-internal/safe-string-coercion + if (stack !== '') { + format += '%s'; + args = args.concat([stack]); + } // eslint-disable-next-line react-internal/safe-string-coercion - var argsWithFormat = args.map(function (item) { - return String(item); - }); // Careful: RN currently depends on this prefix - argsWithFormat.unshift("Warning: " + format); // We intentionally don't use spread (or .apply) directly because it - // breaks IE9: https://github.com/facebook/react/issues/13610 - // eslint-disable-next-line react-internal/no-production-logging + var argsWithFormat = args.map(function (item) { + return String(item); + }); // Careful: RN currently depends on this prefix - Function.prototype.apply.call(console[level], console, argsWithFormat); - } - } + argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it + // breaks IE9: https://github.com/facebook/react/issues/13610 + // eslint-disable-next-line react-internal/no-production-logging - var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare + Function.prototype.apply.call(console[level], console, argsWithFormat); + } +} - function isArray(a) { - return isArrayImpl(a); - } +var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare - var hasError = false; - var caughtError = null; - var getFiberCurrentPropsFromNode$1 = null; - var getInstanceFromNode$1 = null; - var getNodeFromInstance$1 = null; - function setComponentTree( - getFiberCurrentPropsFromNodeImpl, - getInstanceFromNodeImpl, - getNodeFromInstanceImpl - ) { - getFiberCurrentPropsFromNode$1 = getFiberCurrentPropsFromNodeImpl; - getInstanceFromNode$1 = getInstanceFromNodeImpl; - getNodeFromInstance$1 = getNodeFromInstanceImpl; +function isArray(a) { + return isArrayImpl(a); +} - { - if (!getNodeFromInstance$1 || !getInstanceFromNode$1) { - error( - "Injected " + - "module is missing getNodeFromInstance or getInstanceFromNode." - ); - } - } - } +var hasError = false; +var caughtError = null; +var getFiberCurrentPropsFromNode$1 = null; +var getInstanceFromNode$1 = null; +var getNodeFromInstance$1 = null; +function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) { + getFiberCurrentPropsFromNode$1 = getFiberCurrentPropsFromNodeImpl; + getInstanceFromNode$1 = getInstanceFromNodeImpl; + getNodeFromInstance$1 = getNodeFromInstanceImpl; + + { + if (!getNodeFromInstance$1 || !getInstanceFromNode$1) { + error('Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.'); + } + } +} - function validateEventDispatches(event) { - { - var dispatchListeners = event._dispatchListeners; - var dispatchInstances = event._dispatchInstances; - var listenersIsArr = isArray(dispatchListeners); - var listenersLen = listenersIsArr - ? dispatchListeners.length - : dispatchListeners - ? 1 - : 0; - var instancesIsArr = isArray(dispatchInstances); - var instancesLen = instancesIsArr - ? dispatchInstances.length - : dispatchInstances - ? 1 - : 0; - - if ( - instancesIsArr !== listenersIsArr || - instancesLen !== listenersLen - ) { - error("EventPluginUtils: Invalid `event`."); - } - } +function validateEventDispatches(event) { + { + var dispatchListeners = event._dispatchListeners; + var dispatchInstances = event._dispatchInstances; + var listenersIsArr = isArray(dispatchListeners); + var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0; + var instancesIsArr = isArray(dispatchInstances); + var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0; + + if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) { + error('EventPluginUtils: Invalid `event`.'); } - /** - * Dispatch the event to the listener. - * @param {SyntheticEvent} event SyntheticEvent to handle - * @param {function} listener Application-level callback - * @param {*} inst Internal component instance - */ + } +} +/** + * Dispatch the event to the listener. + * @param {SyntheticEvent} event SyntheticEvent to handle + * @param {function} listener Application-level callback + * @param {*} inst Internal component instance + */ - function executeDispatch(event, listener, inst) { - event.currentTarget = getNodeFromInstance$1(inst); - try { - listener(event); - } catch (error) { - if (!hasError) { - hasError = true; - caughtError = error; - } - } +function executeDispatch(event, listener, inst) { + event.currentTarget = getNodeFromInstance$1(inst); - event.currentTarget = null; + try { + listener(event); + } catch (error) { + if (!hasError) { + hasError = true; + caughtError = error; } - /** - * Standard/simple iteration through an event's collected dispatches. - */ + } - function executeDispatchesInOrder(event) { - var dispatchListeners = event._dispatchListeners; - var dispatchInstances = event._dispatchInstances; + event.currentTarget = null; +} +/** + * Standard/simple iteration through an event's collected dispatches. + */ - { - validateEventDispatches(event); - } +function executeDispatchesInOrder(event) { + var dispatchListeners = event._dispatchListeners; + var dispatchInstances = event._dispatchInstances; - if (isArray(dispatchListeners)) { - for (var i = 0; i < dispatchListeners.length; i++) { - if (event.isPropagationStopped()) { - break; - } // Listeners and Instances are two parallel arrays that are always in sync. + { + validateEventDispatches(event); + } - executeDispatch(event, dispatchListeners[i], dispatchInstances[i]); - } - } else if (dispatchListeners) { - executeDispatch(event, dispatchListeners, dispatchInstances); - } + if (isArray(dispatchListeners)) { + for (var i = 0; i < dispatchListeners.length; i++) { + if (event.isPropagationStopped()) { + break; + } // Listeners and Instances are two parallel arrays that are always in sync. - event._dispatchListeners = null; - event._dispatchInstances = null; - } - /** - * Standard/simple iteration through an event's collected dispatches, but stops - * at the first dispatch execution returning true, and returns that id. - * - * @return {?string} id of the first dispatch execution who's listener returns - * true, or null if no listener returned true. - */ - function executeDispatchesInOrderStopAtTrueImpl(event) { - var dispatchListeners = event._dispatchListeners; - var dispatchInstances = event._dispatchInstances; + executeDispatch(event, dispatchListeners[i], dispatchInstances[i]); + } + } else if (dispatchListeners) { + executeDispatch(event, dispatchListeners, dispatchInstances); + } - { - validateEventDispatches(event); - } + event._dispatchListeners = null; + event._dispatchInstances = null; +} +/** + * Standard/simple iteration through an event's collected dispatches, but stops + * at the first dispatch execution returning true, and returns that id. + * + * @return {?string} id of the first dispatch execution who's listener returns + * true, or null if no listener returned true. + */ - if (isArray(dispatchListeners)) { - for (var i = 0; i < dispatchListeners.length; i++) { - if (event.isPropagationStopped()) { - break; - } // Listeners and Instances are two parallel arrays that are always in sync. +function executeDispatchesInOrderStopAtTrueImpl(event) { + var dispatchListeners = event._dispatchListeners; + var dispatchInstances = event._dispatchInstances; - if (dispatchListeners[i](event, dispatchInstances[i])) { - return dispatchInstances[i]; - } - } - } else if (dispatchListeners) { - if (dispatchListeners(event, dispatchInstances)) { - return dispatchInstances; - } - } + { + validateEventDispatches(event); + } - return null; - } - /** - * @see executeDispatchesInOrderStopAtTrueImpl - */ + if (isArray(dispatchListeners)) { + for (var i = 0; i < dispatchListeners.length; i++) { + if (event.isPropagationStopped()) { + break; + } // Listeners and Instances are two parallel arrays that are always in sync. - function executeDispatchesInOrderStopAtTrue(event) { - var ret = executeDispatchesInOrderStopAtTrueImpl(event); - event._dispatchInstances = null; - event._dispatchListeners = null; - return ret; - } - /** - * Execution of a "direct" dispatch - there must be at most one dispatch - * accumulated on the event or it is considered an error. It doesn't really make - * sense for an event with multiple dispatches (bubbled) to keep track of the - * return values at each dispatch execution, but it does tend to make sense when - * dealing with "direct" dispatches. - * - * @return {*} The return value of executing the single dispatch. - */ - function executeDirectDispatch(event) { - { - validateEventDispatches(event); + if (dispatchListeners[i](event, dispatchInstances[i])) { + return dispatchInstances[i]; } + } + } else if (dispatchListeners) { + if (dispatchListeners(event, dispatchInstances)) { + return dispatchInstances; + } + } - var dispatchListener = event._dispatchListeners; - var dispatchInstance = event._dispatchInstances; + return null; +} +/** + * @see executeDispatchesInOrderStopAtTrueImpl + */ - if (isArray(dispatchListener)) { - throw new Error("Invalid `event`."); - } - event.currentTarget = dispatchListener - ? getNodeFromInstance$1(dispatchInstance) - : null; - var res = dispatchListener ? dispatchListener(event) : null; - event.currentTarget = null; - event._dispatchListeners = null; - event._dispatchInstances = null; - return res; - } - /** - * @param {SyntheticEvent} event - * @return {boolean} True iff number of dispatches accumulated is greater than 0. - */ +function executeDispatchesInOrderStopAtTrue(event) { + var ret = executeDispatchesInOrderStopAtTrueImpl(event); + event._dispatchInstances = null; + event._dispatchListeners = null; + return ret; +} +/** + * Execution of a "direct" dispatch - there must be at most one dispatch + * accumulated on the event or it is considered an error. It doesn't really make + * sense for an event with multiple dispatches (bubbled) to keep track of the + * return values at each dispatch execution, but it does tend to make sense when + * dealing with "direct" dispatches. + * + * @return {*} The return value of executing the single dispatch. + */ - function hasDispatches(event) { - return !!event._dispatchListeners; - } - function rethrowCaughtError() { - if (hasError) { - var error = caughtError; - hasError = false; - caughtError = null; - throw error; - } - } +function executeDirectDispatch(event) { + { + validateEventDispatches(event); + } - var assign = Object.assign; + var dispatchListener = event._dispatchListeners; + var dispatchInstance = event._dispatchInstances; - var EVENT_POOL_SIZE = 10; - /** - * @interface Event - * @see http://www.w3.org/TR/DOM-Level-3-Events/ - */ + if (isArray(dispatchListener)) { + throw new Error('Invalid `event`.'); + } - var EventInterface = { - type: null, - target: null, - // currentTarget is set when dispatching; no use in copying it here - currentTarget: function () { - return null; - }, - eventPhase: null, - bubbles: null, - cancelable: null, - timeStamp: function (event) { - return event.timeStamp || Date.now(); - }, - defaultPrevented: null, - isTrusted: null - }; + event.currentTarget = dispatchListener ? getNodeFromInstance$1(dispatchInstance) : null; + var res = dispatchListener ? dispatchListener(event) : null; + event.currentTarget = null; + event._dispatchListeners = null; + event._dispatchInstances = null; + return res; +} +/** + * @param {SyntheticEvent} event + * @return {boolean} True iff number of dispatches accumulated is greater than 0. + */ - function functionThatReturnsTrue() { - return true; - } +function hasDispatches(event) { + return !!event._dispatchListeners; +} +function rethrowCaughtError() { + if (hasError) { + var error = caughtError; + hasError = false; + caughtError = null; + throw error; + } +} - function functionThatReturnsFalse() { - return false; - } - /** - * Synthetic events are dispatched by event plugins, typically in response to a - * top-level event delegation handler. - * - * These systems should generally use pooling to reduce the frequency of garbage - * collection. The system should check `isPersistent` to determine whether the - * event should be released into the pool after being dispatched. Users that - * need a persisted event should invoke `persist`. - * - * Synthetic events (and subclasses) implement the DOM Level 3 Events API by - * normalizing browser quirks. Subclasses do not necessarily have to implement a - * DOM interface; custom application-specific events can also subclass this. - * - * @param {object} dispatchConfig Configuration used to dispatch this event. - * @param {*} targetInst Marker identifying the event target. - * @param {object} nativeEvent Native browser event. - * @param {DOMEventTarget} nativeEventTarget Target node. - */ +var assign = Object.assign; - function SyntheticEvent( - dispatchConfig, - targetInst, - nativeEvent, - nativeEventTarget - ) { - { - // these have a getter/setter for warnings - delete this.nativeEvent; - delete this.preventDefault; - delete this.stopPropagation; - delete this.isDefaultPrevented; - delete this.isPropagationStopped; - } - - this.dispatchConfig = dispatchConfig; - this._targetInst = targetInst; - this.nativeEvent = nativeEvent; - this._dispatchListeners = null; - this._dispatchInstances = null; - var Interface = this.constructor.Interface; - - for (var propName in Interface) { - if (!Interface.hasOwnProperty(propName)) { - continue; - } +var EVENT_POOL_SIZE = 10; +/** + * @interface Event + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ - { - delete this[propName]; // this has a getter/setter for warnings - } +var EventInterface = { + type: null, + target: null, + // currentTarget is set when dispatching; no use in copying it here + currentTarget: function () { + return null; + }, + eventPhase: null, + bubbles: null, + cancelable: null, + timeStamp: function (event) { + return event.timeStamp || Date.now(); + }, + defaultPrevented: null, + isTrusted: null +}; + +function functionThatReturnsTrue() { + return true; +} - var normalize = Interface[propName]; +function functionThatReturnsFalse() { + return false; +} +/** + * Synthetic events are dispatched by event plugins, typically in response to a + * top-level event delegation handler. + * + * These systems should generally use pooling to reduce the frequency of garbage + * collection. The system should check `isPersistent` to determine whether the + * event should be released into the pool after being dispatched. Users that + * need a persisted event should invoke `persist`. + * + * Synthetic events (and subclasses) implement the DOM Level 3 Events API by + * normalizing browser quirks. Subclasses do not necessarily have to implement a + * DOM interface; custom application-specific events can also subclass this. + * + * @param {object} dispatchConfig Configuration used to dispatch this event. + * @param {*} targetInst Marker identifying the event target. + * @param {object} nativeEvent Native browser event. + * @param {DOMEventTarget} nativeEventTarget Target node. + */ - if (normalize) { - this[propName] = normalize(nativeEvent); - } else { - if (propName === "target") { - this.target = nativeEventTarget; - } else { - this[propName] = nativeEvent[propName]; - } - } - } - var defaultPrevented = - nativeEvent.defaultPrevented != null - ? nativeEvent.defaultPrevented - : nativeEvent.returnValue === false; +function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) { + { + // these have a getter/setter for warnings + delete this.nativeEvent; + delete this.preventDefault; + delete this.stopPropagation; + delete this.isDefaultPrevented; + delete this.isPropagationStopped; + } - if (defaultPrevented) { - this.isDefaultPrevented = functionThatReturnsTrue; - } else { - this.isDefaultPrevented = functionThatReturnsFalse; - } + this.dispatchConfig = dispatchConfig; + this._targetInst = targetInst; + this.nativeEvent = nativeEvent; + this._dispatchListeners = null; + this._dispatchInstances = null; + var Interface = this.constructor.Interface; - this.isPropagationStopped = functionThatReturnsFalse; - return this; + for (var propName in Interface) { + if (!Interface.hasOwnProperty(propName)) { + continue; } - assign(SyntheticEvent.prototype, { - preventDefault: function () { - this.defaultPrevented = true; - var event = this.nativeEvent; + { + delete this[propName]; // this has a getter/setter for warnings + } - if (!event) { - return; - } + var normalize = Interface[propName]; - if (event.preventDefault) { - event.preventDefault(); - } else if (typeof event.returnValue !== "unknown") { - event.returnValue = false; - } + if (normalize) { + this[propName] = normalize(nativeEvent); + } else { + if (propName === 'target') { + this.target = nativeEventTarget; + } else { + this[propName] = nativeEvent[propName]; + } + } + } - this.isDefaultPrevented = functionThatReturnsTrue; - }, - stopPropagation: function () { - var event = this.nativeEvent; + var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false; - if (!event) { - return; - } + if (defaultPrevented) { + this.isDefaultPrevented = functionThatReturnsTrue; + } else { + this.isDefaultPrevented = functionThatReturnsFalse; + } - if (event.stopPropagation) { - event.stopPropagation(); - } else if (typeof event.cancelBubble !== "unknown") { - // The ChangeEventPlugin registers a "propertychange" event for - // IE. This event does not support bubbling or cancelling, and - // any references to cancelBubble throw "Member not found". A - // typeof check of "unknown" circumvents this issue (and is also - // IE specific). - event.cancelBubble = true; - } - - this.isPropagationStopped = functionThatReturnsTrue; - }, - - /** - * We release all dispatched `SyntheticEvent`s after each event loop, adding - * them back into the pool. This allows a way to hold onto a reference that - * won't be added back into the pool. - */ - persist: function () { - this.isPersistent = functionThatReturnsTrue; - }, - - /** - * Checks if this event should be released back into the pool. - * - * @return {boolean} True if this should not be released, false otherwise. - */ - isPersistent: functionThatReturnsFalse, - - /** - * `PooledClass` looks for `destructor` on each instance it releases. - */ - destructor: function () { - var Interface = this.constructor.Interface; - - for (var propName in Interface) { - { - Object.defineProperty( - this, - propName, - getPooledWarningPropertyDefinition(propName, Interface[propName]) - ); - } - } + this.isPropagationStopped = functionThatReturnsFalse; + return this; +} - this.dispatchConfig = null; - this._targetInst = null; - this.nativeEvent = null; - this.isDefaultPrevented = functionThatReturnsFalse; - this.isPropagationStopped = functionThatReturnsFalse; - this._dispatchListeners = null; - this._dispatchInstances = null; +assign(SyntheticEvent.prototype, { + preventDefault: function () { + this.defaultPrevented = true; + var event = this.nativeEvent; - { - Object.defineProperty( - this, - "nativeEvent", - getPooledWarningPropertyDefinition("nativeEvent", null) - ); - Object.defineProperty( - this, - "isDefaultPrevented", - getPooledWarningPropertyDefinition( - "isDefaultPrevented", - functionThatReturnsFalse - ) - ); - Object.defineProperty( - this, - "isPropagationStopped", - getPooledWarningPropertyDefinition( - "isPropagationStopped", - functionThatReturnsFalse - ) - ); - Object.defineProperty( - this, - "preventDefault", - getPooledWarningPropertyDefinition("preventDefault", function () {}) - ); - Object.defineProperty( - this, - "stopPropagation", - getPooledWarningPropertyDefinition( - "stopPropagation", - function () {} - ) - ); - } - } - }); - SyntheticEvent.Interface = EventInterface; - /** - * Helper to reduce boilerplate when creating subclasses. - */ + if (!event) { + return; + } - SyntheticEvent.extend = function (Interface) { - var Super = this; + if (event.preventDefault) { + event.preventDefault(); + } else if (typeof event.returnValue !== 'unknown') { + event.returnValue = false; + } - var E = function () {}; + this.isDefaultPrevented = functionThatReturnsTrue; + }, + stopPropagation: function () { + var event = this.nativeEvent; - E.prototype = Super.prototype; - var prototype = new E(); + if (!event) { + return; + } - function Class() { - return Super.apply(this, arguments); - } + if (event.stopPropagation) { + event.stopPropagation(); + } else if (typeof event.cancelBubble !== 'unknown') { + // The ChangeEventPlugin registers a "propertychange" event for + // IE. This event does not support bubbling or cancelling, and + // any references to cancelBubble throw "Member not found". A + // typeof check of "unknown" circumvents this issue (and is also + // IE specific). + event.cancelBubble = true; + } - assign(prototype, Class.prototype); - Class.prototype = prototype; - Class.prototype.constructor = Class; - Class.Interface = assign({}, Super.Interface, Interface); - Class.extend = Super.extend; - addEventPoolingTo(Class); - return Class; - }; + this.isPropagationStopped = functionThatReturnsTrue; + }, - addEventPoolingTo(SyntheticEvent); - /** - * Helper to nullify syntheticEvent instance properties when destructing - * - * @param {String} propName - * @param {?object} getVal - * @return {object} defineProperty object - */ + /** + * We release all dispatched `SyntheticEvent`s after each event loop, adding + * them back into the pool. This allows a way to hold onto a reference that + * won't be added back into the pool. + */ + persist: function () { + this.isPersistent = functionThatReturnsTrue; + }, - function getPooledWarningPropertyDefinition(propName, getVal) { - function set(val) { - var action = isFunction ? "setting the method" : "setting the property"; - warn(action, "This is effectively a no-op"); - return val; - } + /** + * Checks if this event should be released back into the pool. + * + * @return {boolean} True if this should not be released, false otherwise. + */ + isPersistent: functionThatReturnsFalse, - function get() { - var action = isFunction - ? "accessing the method" - : "accessing the property"; - var result = isFunction - ? "This is a no-op function" - : "This is set to null"; - warn(action, result); - return getVal; - } + /** + * `PooledClass` looks for `destructor` on each instance it releases. + */ + destructor: function () { + var Interface = this.constructor.Interface; - function warn(action, result) { - { - error( - "This synthetic event is reused for performance reasons. If you're seeing this, " + - "you're %s `%s` on a released/nullified synthetic event. %s. " + - "If you must keep the original synthetic event around, use event.persist(). " + - "See https://react.dev/link/event-pooling for more information.", - action, - propName, - result - ); - } + for (var propName in Interface) { + { + Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName])); } - - var isFunction = typeof getVal === "function"; - return { - configurable: true, - set: set, - get: get - }; } - function createOrGetPooledEvent( - dispatchConfig, - targetInst, - nativeEvent, - nativeInst - ) { - var EventConstructor = this; + this.dispatchConfig = null; + this._targetInst = null; + this.nativeEvent = null; + this.isDefaultPrevented = functionThatReturnsFalse; + this.isPropagationStopped = functionThatReturnsFalse; + this._dispatchListeners = null; + this._dispatchInstances = null; - if (EventConstructor.eventPool.length) { - var instance = EventConstructor.eventPool.pop(); - EventConstructor.call( - instance, - dispatchConfig, - targetInst, - nativeEvent, - nativeInst - ); - return instance; - } + { + Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null)); + Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse)); + Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse)); + Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {})); + Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {})); + } + } +}); +SyntheticEvent.Interface = EventInterface; +/** + * Helper to reduce boilerplate when creating subclasses. + */ - return new EventConstructor( - dispatchConfig, - targetInst, - nativeEvent, - nativeInst - ); - } +SyntheticEvent.extend = function (Interface) { + var Super = this; - function releasePooledEvent(event) { - var EventConstructor = this; + var E = function () {}; - if (!(event instanceof EventConstructor)) { - throw new Error( - "Trying to release an event instance into a pool of a different type." - ); - } + E.prototype = Super.prototype; + var prototype = new E(); - event.destructor(); + function Class() { + return Super.apply(this, arguments); + } - if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) { - EventConstructor.eventPool.push(event); - } - } + assign(prototype, Class.prototype); + Class.prototype = prototype; + Class.prototype.constructor = Class; + Class.Interface = assign({}, Super.Interface, Interface); + Class.extend = Super.extend; + addEventPoolingTo(Class); + return Class; +}; + +addEventPoolingTo(SyntheticEvent); +/** + * Helper to nullify syntheticEvent instance properties when destructing + * + * @param {String} propName + * @param {?object} getVal + * @return {object} defineProperty object + */ - function addEventPoolingTo(EventConstructor) { - EventConstructor.getPooled = createOrGetPooledEvent; - EventConstructor.eventPool = []; - EventConstructor.release = releasePooledEvent; +function getPooledWarningPropertyDefinition(propName, getVal) { + function set(val) { + var action = isFunction ? 'setting the method' : 'setting the property'; + warn(action, 'This is effectively a no-op'); + return val; + } + + function get() { + var action = isFunction ? 'accessing the method' : 'accessing the property'; + var result = isFunction ? 'This is a no-op function' : 'This is set to null'; + warn(action, result); + return getVal; + } + + function warn(action, result) { + { + error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://react.dev/link/event-pooling for more information.', action, propName, result); } + } - /** - * `touchHistory` isn't actually on the native event, but putting it in the - * interface will ensure that it is cleaned up when pooled/destroyed. The - * `ResponderEventPlugin` will populate it appropriately. - */ + var isFunction = typeof getVal === 'function'; + return { + configurable: true, + set: set, + get: get + }; +} - var ResponderSyntheticEvent = SyntheticEvent.extend({ - touchHistory: function (nativeEvent) { - return null; // Actually doesn't even look at the native event. - } - }); +function createOrGetPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) { + var EventConstructor = this; - var TOP_TOUCH_START = "topTouchStart"; - var TOP_TOUCH_MOVE = "topTouchMove"; - var TOP_TOUCH_END = "topTouchEnd"; - var TOP_TOUCH_CANCEL = "topTouchCancel"; - var TOP_SCROLL = "topScroll"; - var TOP_SELECTION_CHANGE = "topSelectionChange"; - function isStartish(topLevelType) { - return topLevelType === TOP_TOUCH_START; - } - function isMoveish(topLevelType) { - return topLevelType === TOP_TOUCH_MOVE; - } - function isEndish(topLevelType) { - return ( - topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL - ); - } - var startDependencies = [TOP_TOUCH_START]; - var moveDependencies = [TOP_TOUCH_MOVE]; - var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END]; + if (EventConstructor.eventPool.length) { + var instance = EventConstructor.eventPool.pop(); + EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst); + return instance; + } - /** - * Tracks the position and time of each active touch by `touch.identifier`. We - * should typically only see IDs in the range of 1-20 because IDs get recycled - * when touches end and start again. - */ + return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst); +} - var MAX_TOUCH_BANK = 20; - var touchBank = []; - var touchHistory = { - touchBank: touchBank, - numberActiveTouches: 0, - // If there is only one active touch, we remember its location. This prevents - // us having to loop through all of the touches all the time in the most - // common case. - indexOfSingleActiveTouch: -1, - mostRecentTimeStamp: 0 - }; +function releasePooledEvent(event) { + var EventConstructor = this; - function timestampForTouch(touch) { - // The legacy internal implementation provides "timeStamp", which has been - // renamed to "timestamp". Let both work for now while we iron it out - // TODO (evv): rename timeStamp to timestamp in internal code - return touch.timeStamp || touch.timestamp; - } - /** - * TODO: Instead of making gestures recompute filtered velocity, we could - * include a built in velocity computation that can be reused globally. - */ + if (!(event instanceof EventConstructor)) { + throw new Error('Trying to release an event instance into a pool of a different type.'); + } - function createTouchRecord(touch) { - return { - touchActive: true, - startPageX: touch.pageX, - startPageY: touch.pageY, - startTimeStamp: timestampForTouch(touch), - currentPageX: touch.pageX, - currentPageY: touch.pageY, - currentTimeStamp: timestampForTouch(touch), - previousPageX: touch.pageX, - previousPageY: touch.pageY, - previousTimeStamp: timestampForTouch(touch) - }; - } + event.destructor(); - function resetTouchRecord(touchRecord, touch) { - touchRecord.touchActive = true; - touchRecord.startPageX = touch.pageX; - touchRecord.startPageY = touch.pageY; - touchRecord.startTimeStamp = timestampForTouch(touch); - touchRecord.currentPageX = touch.pageX; - touchRecord.currentPageY = touch.pageY; - touchRecord.currentTimeStamp = timestampForTouch(touch); - touchRecord.previousPageX = touch.pageX; - touchRecord.previousPageY = touch.pageY; - touchRecord.previousTimeStamp = timestampForTouch(touch); - } + if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) { + EventConstructor.eventPool.push(event); + } +} - function getTouchIdentifier(_ref) { - var identifier = _ref.identifier; +function addEventPoolingTo(EventConstructor) { + EventConstructor.getPooled = createOrGetPooledEvent; + EventConstructor.eventPool = []; + EventConstructor.release = releasePooledEvent; +} - if (identifier == null) { - throw new Error("Touch object is missing identifier."); - } +/** + * `touchHistory` isn't actually on the native event, but putting it in the + * interface will ensure that it is cleaned up when pooled/destroyed. The + * `ResponderEventPlugin` will populate it appropriately. + */ - { - if (identifier > MAX_TOUCH_BANK) { - error( - "Touch identifier %s is greater than maximum supported %s which causes " + - "performance issues backfilling array locations for all of the indices.", - identifier, - MAX_TOUCH_BANK - ); - } - } +var ResponderSyntheticEvent = SyntheticEvent.extend({ + touchHistory: function (nativeEvent) { + return null; // Actually doesn't even look at the native event. + } +}); + +var TOP_TOUCH_START = 'topTouchStart'; +var TOP_TOUCH_MOVE = 'topTouchMove'; +var TOP_TOUCH_END = 'topTouchEnd'; +var TOP_TOUCH_CANCEL = 'topTouchCancel'; +var TOP_SCROLL = 'topScroll'; +var TOP_SELECTION_CHANGE = 'topSelectionChange'; +function isStartish(topLevelType) { + return topLevelType === TOP_TOUCH_START; +} +function isMoveish(topLevelType) { + return topLevelType === TOP_TOUCH_MOVE; +} +function isEndish(topLevelType) { + return topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL; +} +var startDependencies = [TOP_TOUCH_START]; +var moveDependencies = [TOP_TOUCH_MOVE]; +var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END]; - return identifier; - } +/** + * Tracks the position and time of each active touch by `touch.identifier`. We + * should typically only see IDs in the range of 1-20 because IDs get recycled + * when touches end and start again. + */ - function recordTouchStart(touch) { - var identifier = getTouchIdentifier(touch); - var touchRecord = touchBank[identifier]; +var MAX_TOUCH_BANK = 20; +var touchBank = []; +var touchHistory = { + touchBank: touchBank, + numberActiveTouches: 0, + // If there is only one active touch, we remember its location. This prevents + // us having to loop through all of the touches all the time in the most + // common case. + indexOfSingleActiveTouch: -1, + mostRecentTimeStamp: 0 +}; + +function timestampForTouch(touch) { + // The legacy internal implementation provides "timeStamp", which has been + // renamed to "timestamp". Let both work for now while we iron it out + // TODO (evv): rename timeStamp to timestamp in internal code + return touch.timeStamp || touch.timestamp; +} +/** + * TODO: Instead of making gestures recompute filtered velocity, we could + * include a built in velocity computation that can be reused globally. + */ - if (touchRecord) { - resetTouchRecord(touchRecord, touch); - } else { - touchBank[identifier] = createTouchRecord(touch); - } - touchHistory.mostRecentTimeStamp = timestampForTouch(touch); - } +function createTouchRecord(touch) { + return { + touchActive: true, + startPageX: touch.pageX, + startPageY: touch.pageY, + startTimeStamp: timestampForTouch(touch), + currentPageX: touch.pageX, + currentPageY: touch.pageY, + currentTimeStamp: timestampForTouch(touch), + previousPageX: touch.pageX, + previousPageY: touch.pageY, + previousTimeStamp: timestampForTouch(touch) + }; +} - function recordTouchMove(touch) { - var touchRecord = touchBank[getTouchIdentifier(touch)]; +function resetTouchRecord(touchRecord, touch) { + touchRecord.touchActive = true; + touchRecord.startPageX = touch.pageX; + touchRecord.startPageY = touch.pageY; + touchRecord.startTimeStamp = timestampForTouch(touch); + touchRecord.currentPageX = touch.pageX; + touchRecord.currentPageY = touch.pageY; + touchRecord.currentTimeStamp = timestampForTouch(touch); + touchRecord.previousPageX = touch.pageX; + touchRecord.previousPageY = touch.pageY; + touchRecord.previousTimeStamp = timestampForTouch(touch); +} - if (touchRecord) { - touchRecord.touchActive = true; - touchRecord.previousPageX = touchRecord.currentPageX; - touchRecord.previousPageY = touchRecord.currentPageY; - touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; - touchRecord.currentPageX = touch.pageX; - touchRecord.currentPageY = touch.pageY; - touchRecord.currentTimeStamp = timestampForTouch(touch); - touchHistory.mostRecentTimeStamp = timestampForTouch(touch); - } else { - { - warn( - "Cannot record touch move without a touch start.\n" + - "Touch Move: %s\n" + - "Touch Bank: %s", - printTouch(touch), - printTouchBank() - ); - } - } - } +function getTouchIdentifier(_ref) { + var identifier = _ref.identifier; - function recordTouchEnd(touch) { - var touchRecord = touchBank[getTouchIdentifier(touch)]; + if (identifier == null) { + throw new Error('Touch object is missing identifier.'); + } - if (touchRecord) { - touchRecord.touchActive = false; - touchRecord.previousPageX = touchRecord.currentPageX; - touchRecord.previousPageY = touchRecord.currentPageY; - touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; - touchRecord.currentPageX = touch.pageX; - touchRecord.currentPageY = touch.pageY; - touchRecord.currentTimeStamp = timestampForTouch(touch); - touchHistory.mostRecentTimeStamp = timestampForTouch(touch); - } else { - { - warn( - "Cannot record touch end without a touch start.\n" + - "Touch End: %s\n" + - "Touch Bank: %s", - printTouch(touch), - printTouchBank() - ); - } - } + { + if (identifier > MAX_TOUCH_BANK) { + error('Touch identifier %s is greater than maximum supported %s which causes ' + 'performance issues backfilling array locations for all of the indices.', identifier, MAX_TOUCH_BANK); } + } - function printTouch(touch) { - return JSON.stringify({ - identifier: touch.identifier, - pageX: touch.pageX, - pageY: touch.pageY, - timestamp: timestampForTouch(touch) - }); - } + return identifier; +} - function printTouchBank() { - var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK)); +function recordTouchStart(touch) { + var identifier = getTouchIdentifier(touch); + var touchRecord = touchBank[identifier]; - if (touchBank.length > MAX_TOUCH_BANK) { - printed += " (original size: " + touchBank.length + ")"; - } + if (touchRecord) { + resetTouchRecord(touchRecord, touch); + } else { + touchBank[identifier] = createTouchRecord(touch); + } - return printed; - } + touchHistory.mostRecentTimeStamp = timestampForTouch(touch); +} - var instrumentationCallback; - var ResponderTouchHistoryStore = { - /** - * Registers a listener which can be used to instrument every touch event. - */ - instrument: function (callback) { - instrumentationCallback = callback; - }, - recordTouchTrack: function (topLevelType, nativeEvent) { - if (instrumentationCallback != null) { - instrumentationCallback(topLevelType, nativeEvent); - } +function recordTouchMove(touch) { + var touchRecord = touchBank[getTouchIdentifier(touch)]; + + if (touchRecord) { + touchRecord.touchActive = true; + touchRecord.previousPageX = touchRecord.currentPageX; + touchRecord.previousPageY = touchRecord.currentPageY; + touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; + touchRecord.currentPageX = touch.pageX; + touchRecord.currentPageY = touch.pageY; + touchRecord.currentTimeStamp = timestampForTouch(touch); + touchHistory.mostRecentTimeStamp = timestampForTouch(touch); + } else { + { + warn('Cannot record touch move without a touch start.\n' + 'Touch Move: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank()); + } + } +} - if (isMoveish(topLevelType)) { - nativeEvent.changedTouches.forEach(recordTouchMove); - } else if (isStartish(topLevelType)) { - nativeEvent.changedTouches.forEach(recordTouchStart); - touchHistory.numberActiveTouches = nativeEvent.touches.length; +function recordTouchEnd(touch) { + var touchRecord = touchBank[getTouchIdentifier(touch)]; + + if (touchRecord) { + touchRecord.touchActive = false; + touchRecord.previousPageX = touchRecord.currentPageX; + touchRecord.previousPageY = touchRecord.currentPageY; + touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; + touchRecord.currentPageX = touch.pageX; + touchRecord.currentPageY = touch.pageY; + touchRecord.currentTimeStamp = timestampForTouch(touch); + touchHistory.mostRecentTimeStamp = timestampForTouch(touch); + } else { + { + warn('Cannot record touch end without a touch start.\n' + 'Touch End: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank()); + } + } +} - if (touchHistory.numberActiveTouches === 1) { - touchHistory.indexOfSingleActiveTouch = - nativeEvent.touches[0].identifier; - } - } else if (isEndish(topLevelType)) { - nativeEvent.changedTouches.forEach(recordTouchEnd); - touchHistory.numberActiveTouches = nativeEvent.touches.length; +function printTouch(touch) { + return JSON.stringify({ + identifier: touch.identifier, + pageX: touch.pageX, + pageY: touch.pageY, + timestamp: timestampForTouch(touch) + }); +} - if (touchHistory.numberActiveTouches === 1) { - for (var i = 0; i < touchBank.length; i++) { - var touchTrackToCheck = touchBank[i]; +function printTouchBank() { + var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK)); - if (touchTrackToCheck != null && touchTrackToCheck.touchActive) { - touchHistory.indexOfSingleActiveTouch = i; - break; - } - } + if (touchBank.length > MAX_TOUCH_BANK) { + printed += ' (original size: ' + touchBank.length + ')'; + } - { - var activeRecord = - touchBank[touchHistory.indexOfSingleActiveTouch]; + return printed; +} - if (activeRecord == null || !activeRecord.touchActive) { - error("Cannot find single active touch."); - } - } +var instrumentationCallback; +var ResponderTouchHistoryStore = { + /** + * Registers a listener which can be used to instrument every touch event. + */ + instrument: function (callback) { + instrumentationCallback = callback; + }, + recordTouchTrack: function (topLevelType, nativeEvent) { + if (instrumentationCallback != null) { + instrumentationCallback(topLevelType, nativeEvent); + } + + if (isMoveish(topLevelType)) { + nativeEvent.changedTouches.forEach(recordTouchMove); + } else if (isStartish(topLevelType)) { + nativeEvent.changedTouches.forEach(recordTouchStart); + touchHistory.numberActiveTouches = nativeEvent.touches.length; + + if (touchHistory.numberActiveTouches === 1) { + touchHistory.indexOfSingleActiveTouch = nativeEvent.touches[0].identifier; + } + } else if (isEndish(topLevelType)) { + nativeEvent.changedTouches.forEach(recordTouchEnd); + touchHistory.numberActiveTouches = nativeEvent.touches.length; + + if (touchHistory.numberActiveTouches === 1) { + for (var i = 0; i < touchBank.length; i++) { + var touchTrackToCheck = touchBank[i]; + + if (touchTrackToCheck != null && touchTrackToCheck.touchActive) { + touchHistory.indexOfSingleActiveTouch = i; + break; } } - }, - touchHistory: touchHistory - }; - /** - * Accumulates items that must not be null or undefined. - * - * This is used to conserve memory by avoiding array allocations. - * - * @return {*|array<*>} An accumulation of items. - */ + { + var activeRecord = touchBank[touchHistory.indexOfSingleActiveTouch]; - function accumulate(current, next) { - if (next == null) { - throw new Error("Accumulated items must not be null or undefined."); + if (activeRecord == null || !activeRecord.touchActive) { + error('Cannot find single active touch.'); + } + } } + } + }, + touchHistory: touchHistory +}; - if (current == null) { - return next; - } // Both are not empty. Warning: Never call x.concat(y) when you are not - // certain that x is an Array (x could be a string with concat method). - - if (isArray(current)) { - /* $FlowFixMe[incompatible-return] if `current` is `T` and `T` an array, - * `isArray` might refine to the array element type of `T` */ - return current.concat(next); - } +/** + * Accumulates items that must not be null or undefined. + * + * This is used to conserve memory by avoiding array allocations. + * + * @return {*|array<*>} An accumulation of items. + */ - if (isArray(next)) { - /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, - * `isArray` might refine to the array element type of `T` */ - return [current].concat(next); - } +function accumulate(current, next) { + if (next == null) { + throw new Error('Accumulated items must not be null or undefined.'); + } - return [current, next]; - } + if (current == null) { + return next; + } // Both are not empty. Warning: Never call x.concat(y) when you are not + // certain that x is an Array (x could be a string with concat method). - /** - * Accumulates items that must not be null or undefined into the first one. This - * is used to conserve memory by avoiding array allocations, and thus sacrifices - * API cleanness. Since `current` can be null before being passed in and not - * null after this function, make sure to assign it back to `current`: - * - * `a = accumulateInto(a, b);` - * - * This API should be sparingly used. Try `accumulate` for something cleaner. - * - * @return {*|array<*>} An accumulation of items. - */ - function accumulateInto(current, next) { - if (next == null) { - throw new Error("Accumulated items must not be null or undefined."); - } + if (isArray(current)) { + /* $FlowFixMe[incompatible-return] if `current` is `T` and `T` an array, + * `isArray` might refine to the array element type of `T` */ + return current.concat(next); + } - if (current == null) { - return next; - } // Both are not empty. Warning: Never call x.concat(y) when you are not - // certain that x is an Array (x could be a string with concat method). + if (isArray(next)) { + /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, + * `isArray` might refine to the array element type of `T` */ + return [current].concat(next); + } - if (isArray(current)) { - if (isArray(next)) { - // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable - // $FlowFixMe[method-unbinding] - current.push.apply(current, next); - return current; - } // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable + return [current, next]; +} - current.push(next); - return current; - } +/** + * Accumulates items that must not be null or undefined into the first one. This + * is used to conserve memory by avoiding array allocations, and thus sacrifices + * API cleanness. Since `current` can be null before being passed in and not + * null after this function, make sure to assign it back to `current`: + * + * `a = accumulateInto(a, b);` + * + * This API should be sparingly used. Try `accumulate` for something cleaner. + * + * @return {*|array<*>} An accumulation of items. + */ - if (isArray(next)) { - // A bit too dangerous to mutate `next`. +function accumulateInto(current, next) { + if (next == null) { + throw new Error('Accumulated items must not be null or undefined.'); + } - /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, - * `isArray` might refine to the array element type of `T` */ - return [current].concat(next); - } + if (current == null) { + return next; + } // Both are not empty. Warning: Never call x.concat(y) when you are not + // certain that x is an Array (x could be a string with concat method). - return [current, next]; - } - /** - * @param {array} arr an "accumulation" of items which is either an Array or - * a single item. Useful when paired with the `accumulate` module. This is a - * simple utility that allows us to reason about a collection of items, but - * handling the case when there is exactly one item (and we do not need to - * allocate an array). - * @param {function} cb Callback invoked with each element or a collection. - * @param {?} [scope] Scope used as `this` in a callback. - */ - function forEachAccumulated(arr, cb, scope) { - if (Array.isArray(arr)) { - // $FlowFixMe[incompatible-call] if `T` is an array, `cb` cannot be called - arr.forEach(cb, scope); - } else if (arr) { - cb.call(scope, arr); - } - } - - var FunctionComponent = 0; - var ClassComponent = 1; - var HostRoot = 3; // Root of a host tree. Could be nested inside another node. - - var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. - - var HostComponent = 5; - var HostText = 6; - var Fragment = 7; - var Mode = 8; - var ContextConsumer = 9; - var ContextProvider = 10; - var ForwardRef = 11; - var Profiler = 12; - var SuspenseComponent = 13; - var MemoComponent = 14; - var SimpleMemoComponent = 15; - var LazyComponent = 16; - var IncompleteClassComponent = 17; - var DehydratedFragment = 18; - var SuspenseListComponent = 19; - var ScopeComponent = 21; - var OffscreenComponent = 22; - var LegacyHiddenComponent = 23; - var CacheComponent = 24; - var TracingMarkerComponent = 25; - var HostHoistable = 26; - var HostSingleton = 27; - var IncompleteFunctionComponent = 28; + if (isArray(current)) { + if (isArray(next)) { + // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable + // $FlowFixMe[method-unbinding] + current.push.apply(current, next); + return current; + } // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable - /** - * Instance of element that should respond to touch/move types of interactions, - * as indicated explicitly by relevant callbacks. - */ - var responderInst = null; - /** - * Count of current touches. A textInput should become responder iff the - * selection changes while there is a touch on the screen. - */ + current.push(next); + return current; + } - var trackedTouchCount = 0; - - function changeResponder(nextResponderInst, blockHostResponder) { - var oldResponderInst = responderInst; - responderInst = nextResponderInst; - - if (ResponderEventPlugin.GlobalResponderHandler !== null) { - ResponderEventPlugin.GlobalResponderHandler.onChange( - oldResponderInst, - nextResponderInst, - blockHostResponder - ); - } - } - - var eventTypes = { - /** - * On a `touchStart`/`mouseDown`, is it desired that this element become the - * responder? - */ - startShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onStartShouldSetResponder", - captured: "onStartShouldSetResponderCapture" - }, - dependencies: startDependencies - }, - - /** - * On a `scroll`, is it desired that this element become the responder? This - * is usually not needed, but should be used to retroactively infer that a - * `touchStart` had occurred during momentum scroll. During a momentum scroll, - * a touch start will be immediately followed by a scroll event if the view is - * currently scrolling. - * - * TODO: This shouldn't bubble. - */ - scrollShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onScrollShouldSetResponder", - captured: "onScrollShouldSetResponderCapture" - }, - dependencies: [TOP_SCROLL] - }, - - /** - * On text selection change, should this element become the responder? This - * is needed for text inputs or other views with native selection, so the - * JS view can claim the responder. - * - * TODO: This shouldn't bubble. - */ - selectionChangeShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onSelectionChangeShouldSetResponder", - captured: "onSelectionChangeShouldSetResponderCapture" - }, - dependencies: [TOP_SELECTION_CHANGE] - }, - - /** - * On a `touchMove`/`mouseMove`, is it desired that this element become the - * responder? - */ - moveShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onMoveShouldSetResponder", - captured: "onMoveShouldSetResponderCapture" - }, - dependencies: moveDependencies - }, - - /** - * Direct responder events dispatched directly to responder. Do not bubble. - */ - responderStart: { - registrationName: "onResponderStart", - dependencies: startDependencies - }, - responderMove: { - registrationName: "onResponderMove", - dependencies: moveDependencies - }, - responderEnd: { - registrationName: "onResponderEnd", - dependencies: endDependencies - }, - responderRelease: { - registrationName: "onResponderRelease", - dependencies: endDependencies - }, - responderTerminationRequest: { - registrationName: "onResponderTerminationRequest", - dependencies: [] - }, - responderGrant: { - registrationName: "onResponderGrant", - dependencies: [] - }, - responderReject: { - registrationName: "onResponderReject", - dependencies: [] - }, - responderTerminate: { - registrationName: "onResponderTerminate", - dependencies: [] - } - }; // Start of inline: the below functions were inlined from - // EventPropagator.js, as they deviated from ReactDOM's newer - // implementations. - - function getParent$1(inst) { - do { - inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. - // That is depending on if we want nested subtrees (layers) to bubble - // events to their parent. We could also go through parentNode on the - // host node but that wouldn't work for React Native and doesn't let us - // do the portal feature. - } while (inst && inst.tag !== HostComponent); + if (isArray(next)) { + // A bit too dangerous to mutate `next`. - if (inst) { - return inst; - } + /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, + * `isArray` might refine to the array element type of `T` */ + return [current].concat(next); + } - return null; - } - /** - * Return the lowest common ancestor of A and B, or null if they are in - * different trees. - */ + return [current, next]; +} - function getLowestCommonAncestor(instA, instB) { - var depthA = 0; +/** + * @param {array} arr an "accumulation" of items which is either an Array or + * a single item. Useful when paired with the `accumulate` module. This is a + * simple utility that allows us to reason about a collection of items, but + * handling the case when there is exactly one item (and we do not need to + * allocate an array). + * @param {function} cb Callback invoked with each element or a collection. + * @param {?} [scope] Scope used as `this` in a callback. + */ +function forEachAccumulated(arr, cb, scope) { + if (Array.isArray(arr)) { + // $FlowFixMe[incompatible-call] if `T` is an array, `cb` cannot be called + arr.forEach(cb, scope); + } else if (arr) { + cb.call(scope, arr); + } +} - for (var tempA = instA; tempA; tempA = getParent$1(tempA)) { - depthA++; - } +var FunctionComponent = 0; +var ClassComponent = 1; +var HostRoot = 3; // Root of a host tree. Could be nested inside another node. + +var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. + +var HostComponent = 5; +var HostText = 6; +var Fragment = 7; +var Mode = 8; +var ContextConsumer = 9; +var ContextProvider = 10; +var ForwardRef = 11; +var Profiler = 12; +var SuspenseComponent = 13; +var MemoComponent = 14; +var SimpleMemoComponent = 15; +var LazyComponent = 16; +var IncompleteClassComponent = 17; +var DehydratedFragment = 18; +var SuspenseListComponent = 19; +var ScopeComponent = 21; +var OffscreenComponent = 22; +var LegacyHiddenComponent = 23; +var CacheComponent = 24; +var TracingMarkerComponent = 25; +var HostHoistable = 26; +var HostSingleton = 27; +var IncompleteFunctionComponent = 28; - var depthB = 0; +/** + * Instance of element that should respond to touch/move types of interactions, + * as indicated explicitly by relevant callbacks. + */ - for (var tempB = instB; tempB; tempB = getParent$1(tempB)) { - depthB++; - } // If A is deeper, crawl up. +var responderInst = null; +/** + * Count of current touches. A textInput should become responder iff the + * selection changes while there is a touch on the screen. + */ - while (depthA - depthB > 0) { - instA = getParent$1(instA); - depthA--; - } // If B is deeper, crawl up. +var trackedTouchCount = 0; - while (depthB - depthA > 0) { - instB = getParent$1(instB); - depthB--; - } // Walk in lockstep until we find a match. +function changeResponder(nextResponderInst, blockHostResponder) { + var oldResponderInst = responderInst; + responderInst = nextResponderInst; - var depth = depthA; + if (ResponderEventPlugin.GlobalResponderHandler !== null) { + ResponderEventPlugin.GlobalResponderHandler.onChange(oldResponderInst, nextResponderInst, blockHostResponder); + } +} - while (depth--) { - if (instA === instB || instA === instB.alternate) { - return instA; - } +var eventTypes = { + /** + * On a `touchStart`/`mouseDown`, is it desired that this element become the + * responder? + */ + startShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onStartShouldSetResponder', + captured: 'onStartShouldSetResponderCapture' + }, + dependencies: startDependencies + }, + + /** + * On a `scroll`, is it desired that this element become the responder? This + * is usually not needed, but should be used to retroactively infer that a + * `touchStart` had occurred during momentum scroll. During a momentum scroll, + * a touch start will be immediately followed by a scroll event if the view is + * currently scrolling. + * + * TODO: This shouldn't bubble. + */ + scrollShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onScrollShouldSetResponder', + captured: 'onScrollShouldSetResponderCapture' + }, + dependencies: [TOP_SCROLL] + }, + + /** + * On text selection change, should this element become the responder? This + * is needed for text inputs or other views with native selection, so the + * JS view can claim the responder. + * + * TODO: This shouldn't bubble. + */ + selectionChangeShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onSelectionChangeShouldSetResponder', + captured: 'onSelectionChangeShouldSetResponderCapture' + }, + dependencies: [TOP_SELECTION_CHANGE] + }, + + /** + * On a `touchMove`/`mouseMove`, is it desired that this element become the + * responder? + */ + moveShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onMoveShouldSetResponder', + captured: 'onMoveShouldSetResponderCapture' + }, + dependencies: moveDependencies + }, + + /** + * Direct responder events dispatched directly to responder. Do not bubble. + */ + responderStart: { + registrationName: 'onResponderStart', + dependencies: startDependencies + }, + responderMove: { + registrationName: 'onResponderMove', + dependencies: moveDependencies + }, + responderEnd: { + registrationName: 'onResponderEnd', + dependencies: endDependencies + }, + responderRelease: { + registrationName: 'onResponderRelease', + dependencies: endDependencies + }, + responderTerminationRequest: { + registrationName: 'onResponderTerminationRequest', + dependencies: [] + }, + responderGrant: { + registrationName: 'onResponderGrant', + dependencies: [] + }, + responderReject: { + registrationName: 'onResponderReject', + dependencies: [] + }, + responderTerminate: { + registrationName: 'onResponderTerminate', + dependencies: [] + } +}; // Start of inline: the below functions were inlined from +// EventPropagator.js, as they deviated from ReactDOM's newer +// implementations. + +function getParent$1(inst) { + do { + inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. + // That is depending on if we want nested subtrees (layers) to bubble + // events to their parent. We could also go through parentNode on the + // host node but that wouldn't work for React Native and doesn't let us + // do the portal feature. + } while (inst && inst.tag !== HostComponent); + + if (inst) { + return inst; + } + + return null; +} +/** + * Return the lowest common ancestor of A and B, or null if they are in + * different trees. + */ - instA = getParent$1(instA); - instB = getParent$1(instB); - } - return null; +function getLowestCommonAncestor(instA, instB) { + var depthA = 0; + + for (var tempA = instA; tempA; tempA = getParent$1(tempA)) { + depthA++; + } + + var depthB = 0; + + for (var tempB = instB; tempB; tempB = getParent$1(tempB)) { + depthB++; + } // If A is deeper, crawl up. + + + while (depthA - depthB > 0) { + instA = getParent$1(instA); + depthA--; + } // If B is deeper, crawl up. + + + while (depthB - depthA > 0) { + instB = getParent$1(instB); + depthB--; + } // Walk in lockstep until we find a match. + + + var depth = depthA; + + while (depth--) { + if (instA === instB || instA === instB.alternate) { + return instA; } - /** - * Return if A is an ancestor of B. - */ - function isAncestor(instA, instB) { - while (instB) { - if (instA === instB || instA === instB.alternate) { - return true; - } + instA = getParent$1(instA); + instB = getParent$1(instB); + } - instB = getParent$1(instB); - } + return null; +} +/** + * Return if A is an ancestor of B. + */ - return false; +function isAncestor(instA, instB) { + while (instB) { + if (instA === instB || instA === instB.alternate) { + return true; } - /** - * Simulates the traversal of a two-phase, capture/bubble event dispatch. - */ - function traverseTwoPhase$1(inst, fn, arg) { - var path = []; + instB = getParent$1(instB); + } - while (inst) { - path.push(inst); - inst = getParent$1(inst); - } + return false; +} +/** + * Simulates the traversal of a two-phase, capture/bubble event dispatch. + */ - var i; - for (i = path.length; i-- > 0; ) { - fn(path[i], "captured", arg); - } +function traverseTwoPhase$1(inst, fn, arg) { + var path = []; - for (i = 0; i < path.length; i++) { - fn(path[i], "bubbled", arg); - } - } + while (inst) { + path.push(inst); + inst = getParent$1(inst); + } - function getListener$1(inst, registrationName) { - var stateNode = inst.stateNode; + var i; - if (stateNode === null) { - // Work in progress (ex: onload events in incremental mode). - return null; - } + for (i = path.length; i-- > 0;) { + fn(path[i], 'captured', arg); + } - var props = getFiberCurrentPropsFromNode$1(stateNode); + for (i = 0; i < path.length; i++) { + fn(path[i], 'bubbled', arg); + } +} - if (props === null) { - // Work in progress. - return null; - } +function getListener$1(inst, registrationName) { + var stateNode = inst.stateNode; - var listener = props[registrationName]; + if (stateNode === null) { + // Work in progress (ex: onload events in incremental mode). + return null; + } - if (listener && typeof listener !== "function") { - throw new Error( - "Expected `" + - registrationName + - "` listener to be a function, instead got a value of `" + - typeof listener + - "` type." - ); - } + var props = getFiberCurrentPropsFromNode$1(stateNode); - return listener; - } + if (props === null) { + // Work in progress. + return null; + } - function listenerAtPhase$1(inst, event, propagationPhase) { - var registrationName = - event.dispatchConfig.phasedRegistrationNames[propagationPhase]; - return getListener$1(inst, registrationName); - } + var listener = props[registrationName]; - function accumulateDirectionalDispatches$1(inst, phase, event) { - { - if (!inst) { - error("Dispatching inst must not be null"); - } - } + if (listener && typeof listener !== 'function') { + throw new Error("Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type."); + } + + return listener; +} - var listener = listenerAtPhase$1(inst, event, phase); +function listenerAtPhase$1(inst, event, propagationPhase) { + var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase]; + return getListener$1(inst, registrationName); +} - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } +function accumulateDirectionalDispatches$1(inst, phase, event) { + { + if (!inst) { + error('Dispatching inst must not be null'); } - /** - * Accumulates without regard to direction, does not look for phased - * registration names. Same as `accumulateDirectDispatchesSingle` but without - * requiring that the `dispatchMarker` be the same as the dispatched ID. - */ + } - function accumulateDispatches$1(inst, ignoredDirection, event) { - if (inst && event && event.dispatchConfig.registrationName) { - var registrationName = event.dispatchConfig.registrationName; - var listener = getListener$1(inst, registrationName); + var listener = listenerAtPhase$1(inst, event, phase); - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } - } - } - /** - * Accumulates dispatches on an `SyntheticEvent`, but only for the - * `dispatchMarker`. - * @param {SyntheticEvent} event - */ + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); + } +} +/** + * Accumulates without regard to direction, does not look for phased + * registration names. Same as `accumulateDirectDispatchesSingle` but without + * requiring that the `dispatchMarker` be the same as the dispatched ID. + */ - function accumulateDirectDispatchesSingle$1(event) { - if (event && event.dispatchConfig.registrationName) { - accumulateDispatches$1(event._targetInst, null, event); - } - } - function accumulateDirectDispatches$1(events) { - forEachAccumulated(events, accumulateDirectDispatchesSingle$1); - } +function accumulateDispatches$1(inst, ignoredDirection, event) { + if (inst && event && event.dispatchConfig.registrationName) { + var registrationName = event.dispatchConfig.registrationName; + var listener = getListener$1(inst, registrationName); - function accumulateTwoPhaseDispatchesSingleSkipTarget(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - var targetInst = event._targetInst; - var parentInst = targetInst ? getParent$1(targetInst) : null; - traverseTwoPhase$1( - parentInst, - accumulateDirectionalDispatches$1, - event - ); - } + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); } + } +} +/** + * Accumulates dispatches on an `SyntheticEvent`, but only for the + * `dispatchMarker`. + * @param {SyntheticEvent} event + */ - function accumulateTwoPhaseDispatchesSkipTarget(events) { - forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget); - } - function accumulateTwoPhaseDispatchesSingle$1(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - traverseTwoPhase$1( - event._targetInst, - accumulateDirectionalDispatches$1, - event - ); - } - } +function accumulateDirectDispatchesSingle$1(event) { + if (event && event.dispatchConfig.registrationName) { + accumulateDispatches$1(event._targetInst, null, event); + } +} - function accumulateTwoPhaseDispatches$1(events) { - forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle$1); - } // End of inline +function accumulateDirectDispatches$1(events) { + forEachAccumulated(events, accumulateDirectDispatchesSingle$1); +} - /** - * - * Responder System: - * ---------------- - * - * - A global, solitary "interaction lock" on a view. - * - If a node becomes the responder, it should convey visual feedback - * immediately to indicate so, either by highlighting or moving accordingly. - * - To be the responder means, that touches are exclusively important to that - * responder view, and no other view. - * - While touches are still occurring, the responder lock can be transferred to - * a new view, but only to increasingly "higher" views (meaning ancestors of - * the current responder). - * - * Responder being granted: - * ------------------------ - * - * - Touch starts, moves, and scrolls can cause an ID to become the responder. - * - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to - * the "appropriate place". - * - If nothing is currently the responder, the "appropriate place" is the - * initiating event's `targetID`. - * - If something *is* already the responder, the "appropriate place" is the - * first common ancestor of the event target and the current `responderInst`. - * - Some negotiation happens: See the timing diagram below. - * - Scrolled views automatically become responder. The reasoning is that a - * platform scroll view that isn't built on top of the responder system has - * began scrolling, and the active responder must now be notified that the - * interaction is no longer locked to it - the system has taken over. - * - * - Responder being released: - * As soon as no more touches that *started* inside of descendants of the - * *current* responderInst, an `onResponderRelease` event is dispatched to the - * current responder, and the responder lock is released. - * - * TODO: - * - on "end", a callback hook for `onResponderEndShouldRemainResponder` that - * determines if the responder lock should remain. - * - If a view shouldn't "remain" the responder, any active touches should by - * default be considered "dead" and do not influence future negotiations or - * bubble paths. It should be as if those touches do not exist. - * -- For multitouch: Usually a translate-z will choose to "remain" responder - * after one out of many touches ended. For translate-y, usually the view - * doesn't wish to "remain" responder after one of many touches end. - * - Consider building this on top of a `stopPropagation` model similar to - * `W3C` events. - * - Ensure that `onResponderTerminate` is called on touch cancels, whether or - * not `onResponderTerminationRequest` returns `true` or `false`. - * - */ +function accumulateTwoPhaseDispatchesSingleSkipTarget(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + var targetInst = event._targetInst; + var parentInst = targetInst ? getParent$1(targetInst) : null; + traverseTwoPhase$1(parentInst, accumulateDirectionalDispatches$1, event); + } +} + +function accumulateTwoPhaseDispatchesSkipTarget(events) { + forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget); +} + +function accumulateTwoPhaseDispatchesSingle$1(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + traverseTwoPhase$1(event._targetInst, accumulateDirectionalDispatches$1, event); + } +} + +function accumulateTwoPhaseDispatches$1(events) { + forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle$1); +} // End of inline + +/** + * + * Responder System: + * ---------------- + * + * - A global, solitary "interaction lock" on a view. + * - If a node becomes the responder, it should convey visual feedback + * immediately to indicate so, either by highlighting or moving accordingly. + * - To be the responder means, that touches are exclusively important to that + * responder view, and no other view. + * - While touches are still occurring, the responder lock can be transferred to + * a new view, but only to increasingly "higher" views (meaning ancestors of + * the current responder). + * + * Responder being granted: + * ------------------------ + * + * - Touch starts, moves, and scrolls can cause an ID to become the responder. + * - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to + * the "appropriate place". + * - If nothing is currently the responder, the "appropriate place" is the + * initiating event's `targetID`. + * - If something *is* already the responder, the "appropriate place" is the + * first common ancestor of the event target and the current `responderInst`. + * - Some negotiation happens: See the timing diagram below. + * - Scrolled views automatically become responder. The reasoning is that a + * platform scroll view that isn't built on top of the responder system has + * began scrolling, and the active responder must now be notified that the + * interaction is no longer locked to it - the system has taken over. + * + * - Responder being released: + * As soon as no more touches that *started* inside of descendants of the + * *current* responderInst, an `onResponderRelease` event is dispatched to the + * current responder, and the responder lock is released. + * + * TODO: + * - on "end", a callback hook for `onResponderEndShouldRemainResponder` that + * determines if the responder lock should remain. + * - If a view shouldn't "remain" the responder, any active touches should by + * default be considered "dead" and do not influence future negotiations or + * bubble paths. It should be as if those touches do not exist. + * -- For multitouch: Usually a translate-z will choose to "remain" responder + * after one out of many touches ended. For translate-y, usually the view + * doesn't wish to "remain" responder after one of many touches end. + * - Consider building this on top of a `stopPropagation` model similar to + * `W3C` events. + * - Ensure that `onResponderTerminate` is called on touch cancels, whether or + * not `onResponderTerminationRequest` returns `true` or `false`. + * + */ - /* Negotiation Performed +/* Negotiation Performed +-----------------------+ / \ Process low level events to + Current Responder + wantsResponderID @@ -1490,25919 +1352,22142 @@ to return true:wantsResponderID| | | | + + */ - /** - * A note about event ordering in the `EventPluginRegistry`. - * - * Suppose plugins are injected in the following order: - * - * `[R, S, C]` - * - * To help illustrate the example, assume `S` is `SimpleEventPlugin` (for - * `onClick` etc) and `R` is `ResponderEventPlugin`. - * - * "Deferred-Dispatched Events": - * - * - The current event plugin system will traverse the list of injected plugins, - * in order, and extract events by collecting the plugin's return value of - * `extractEvents()`. - * - These events that are returned from `extractEvents` are "deferred - * dispatched events". - * - When returned from `extractEvents`, deferred-dispatched events contain an - * "accumulation" of deferred dispatches. - * - These deferred dispatches are accumulated/collected before they are - * returned, but processed at a later time by the `EventPluginRegistry` (hence the - * name deferred). - * - * In the process of returning their deferred-dispatched events, event plugins - * themselves can dispatch events on-demand without returning them from - * `extractEvents`. Plugins might want to do this, so that they can use event - * dispatching as a tool that helps them decide which events should be extracted - * in the first place. - * - * "On-Demand-Dispatched Events": - * - * - On-demand-dispatched events are not returned from `extractEvents`. - * - On-demand-dispatched events are dispatched during the process of returning - * the deferred-dispatched events. - * - They should not have side effects. - * - They should be avoided, and/or eventually be replaced with another - * abstraction that allows event plugins to perform multiple "rounds" of event - * extraction. - * - * Therefore, the sequence of event dispatches becomes: - * - * - `R`s on-demand events (if any) (dispatched by `R` on-demand) - * - `S`s on-demand events (if any) (dispatched by `S` on-demand) - * - `C`s on-demand events (if any) (dispatched by `C` on-demand) - * - `R`s extracted events (if any) (dispatched by `EventPluginRegistry`) - * - `S`s extracted events (if any) (dispatched by `EventPluginRegistry`) - * - `C`s extracted events (if any) (dispatched by `EventPluginRegistry`) - * - * In the case of `ResponderEventPlugin`: If the `startShouldSetResponder` - * on-demand dispatch returns `true` (and some other details are satisfied) the - * `onResponderGrant` deferred dispatched event is returned from - * `extractEvents`. The sequence of dispatch executions in this case - * will appear as follows: - * - * - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand) - * - `touchStartCapture` (`EventPluginRegistry` dispatches as usual) - * - `touchStart` (`EventPluginRegistry` dispatches as usual) - * - `responderGrant/Reject` (`EventPluginRegistry` dispatches as usual) - */ - - function setResponderAndExtractTransfer( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - var shouldSetEventType = isStartish(topLevelType) - ? eventTypes.startShouldSetResponder - : isMoveish(topLevelType) - ? eventTypes.moveShouldSetResponder - : topLevelType === TOP_SELECTION_CHANGE - ? eventTypes.selectionChangeShouldSetResponder - : eventTypes.scrollShouldSetResponder; // TODO: stop one short of the current responder. - - var bubbleShouldSetFrom = !responderInst - ? targetInst - : getLowestCommonAncestor(responderInst, targetInst); // When capturing/bubbling the "shouldSet" event, we want to skip the target - // (deepest ID) if it happens to be the current responder. The reasoning: - // It's strange to get an `onMoveShouldSetResponder` when you're *already* - // the responder. - - var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst; - var shouldSetEvent = ResponderSyntheticEvent.getPooled( - shouldSetEventType, - bubbleShouldSetFrom, - nativeEvent, - nativeEventTarget - ); - shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - - if (skipOverBubbleShouldSetFrom) { - accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent); - } else { - accumulateTwoPhaseDispatches$1(shouldSetEvent); - } - - var wantsResponderInst = - executeDispatchesInOrderStopAtTrue(shouldSetEvent); +/** + * A note about event ordering in the `EventPluginRegistry`. + * + * Suppose plugins are injected in the following order: + * + * `[R, S, C]` + * + * To help illustrate the example, assume `S` is `SimpleEventPlugin` (for + * `onClick` etc) and `R` is `ResponderEventPlugin`. + * + * "Deferred-Dispatched Events": + * + * - The current event plugin system will traverse the list of injected plugins, + * in order, and extract events by collecting the plugin's return value of + * `extractEvents()`. + * - These events that are returned from `extractEvents` are "deferred + * dispatched events". + * - When returned from `extractEvents`, deferred-dispatched events contain an + * "accumulation" of deferred dispatches. + * - These deferred dispatches are accumulated/collected before they are + * returned, but processed at a later time by the `EventPluginRegistry` (hence the + * name deferred). + * + * In the process of returning their deferred-dispatched events, event plugins + * themselves can dispatch events on-demand without returning them from + * `extractEvents`. Plugins might want to do this, so that they can use event + * dispatching as a tool that helps them decide which events should be extracted + * in the first place. + * + * "On-Demand-Dispatched Events": + * + * - On-demand-dispatched events are not returned from `extractEvents`. + * - On-demand-dispatched events are dispatched during the process of returning + * the deferred-dispatched events. + * - They should not have side effects. + * - They should be avoided, and/or eventually be replaced with another + * abstraction that allows event plugins to perform multiple "rounds" of event + * extraction. + * + * Therefore, the sequence of event dispatches becomes: + * + * - `R`s on-demand events (if any) (dispatched by `R` on-demand) + * - `S`s on-demand events (if any) (dispatched by `S` on-demand) + * - `C`s on-demand events (if any) (dispatched by `C` on-demand) + * - `R`s extracted events (if any) (dispatched by `EventPluginRegistry`) + * - `S`s extracted events (if any) (dispatched by `EventPluginRegistry`) + * - `C`s extracted events (if any) (dispatched by `EventPluginRegistry`) + * + * In the case of `ResponderEventPlugin`: If the `startShouldSetResponder` + * on-demand dispatch returns `true` (and some other details are satisfied) the + * `onResponderGrant` deferred dispatched event is returned from + * `extractEvents`. The sequence of dispatch executions in this case + * will appear as follows: + * + * - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand) + * - `touchStartCapture` (`EventPluginRegistry` dispatches as usual) + * - `touchStart` (`EventPluginRegistry` dispatches as usual) + * - `responderGrant/Reject` (`EventPluginRegistry` dispatches as usual) + */ - if (!shouldSetEvent.isPersistent()) { - shouldSetEvent.constructor.release(shouldSetEvent); - } - if (!wantsResponderInst || wantsResponderInst === responderInst) { - return null; - } +function setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var shouldSetEventType = isStartish(topLevelType) ? eventTypes.startShouldSetResponder : isMoveish(topLevelType) ? eventTypes.moveShouldSetResponder : topLevelType === TOP_SELECTION_CHANGE ? eventTypes.selectionChangeShouldSetResponder : eventTypes.scrollShouldSetResponder; // TODO: stop one short of the current responder. + + var bubbleShouldSetFrom = !responderInst ? targetInst : getLowestCommonAncestor(responderInst, targetInst); // When capturing/bubbling the "shouldSet" event, we want to skip the target + // (deepest ID) if it happens to be the current responder. The reasoning: + // It's strange to get an `onMoveShouldSetResponder` when you're *already* + // the responder. + + var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst; + var shouldSetEvent = ResponderSyntheticEvent.getPooled(shouldSetEventType, bubbleShouldSetFrom, nativeEvent, nativeEventTarget); + shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + + if (skipOverBubbleShouldSetFrom) { + accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent); + } else { + accumulateTwoPhaseDispatches$1(shouldSetEvent); + } + + var wantsResponderInst = executeDispatchesInOrderStopAtTrue(shouldSetEvent); + + if (!shouldSetEvent.isPersistent()) { + shouldSetEvent.constructor.release(shouldSetEvent); + } + + if (!wantsResponderInst || wantsResponderInst === responderInst) { + return null; + } + + var extracted; + var grantEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderGrant, wantsResponderInst, nativeEvent, nativeEventTarget); + grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(grantEvent); + var blockHostResponder = executeDirectDispatch(grantEvent) === true; + + if (responderInst) { + var terminationRequestEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminationRequest, responderInst, nativeEvent, nativeEventTarget); + terminationRequestEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(terminationRequestEvent); + var shouldSwitch = !hasDispatches(terminationRequestEvent) || executeDirectDispatch(terminationRequestEvent); + + if (!terminationRequestEvent.isPersistent()) { + terminationRequestEvent.constructor.release(terminationRequestEvent); + } + + if (shouldSwitch) { + var terminateEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminate, responderInst, nativeEvent, nativeEventTarget); + terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(terminateEvent); + extracted = accumulate(extracted, [grantEvent, terminateEvent]); + changeResponder(wantsResponderInst, blockHostResponder); + } else { + var rejectEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderReject, wantsResponderInst, nativeEvent, nativeEventTarget); + rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(rejectEvent); + extracted = accumulate(extracted, rejectEvent); + } + } else { + extracted = accumulate(extracted, grantEvent); + changeResponder(wantsResponderInst, blockHostResponder); + } + + return extracted; +} +/** + * A transfer is a negotiation between a currently set responder and the next + * element to claim responder status. Any start event could trigger a transfer + * of responderInst. Any move event could trigger a transfer. + * + * @param {string} topLevelType Record from `BrowserEventConstants`. + * @return {boolean} True if a transfer of responder could possibly occur. + */ - var extracted; - var grantEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderGrant, - wantsResponderInst, - nativeEvent, - nativeEventTarget - ); - grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(grantEvent); - var blockHostResponder = executeDirectDispatch(grantEvent) === true; - - if (responderInst) { - var terminationRequestEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderTerminationRequest, - responderInst, - nativeEvent, - nativeEventTarget - ); - terminationRequestEvent.touchHistory = - ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(terminationRequestEvent); - var shouldSwitch = - !hasDispatches(terminationRequestEvent) || - executeDirectDispatch(terminationRequestEvent); - - if (!terminationRequestEvent.isPersistent()) { - terminationRequestEvent.constructor.release(terminationRequestEvent); - } - - if (shouldSwitch) { - var terminateEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderTerminate, - responderInst, - nativeEvent, - nativeEventTarget - ); - terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(terminateEvent); - extracted = accumulate(extracted, [grantEvent, terminateEvent]); - changeResponder(wantsResponderInst, blockHostResponder); - } else { - var rejectEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderReject, - wantsResponderInst, - nativeEvent, - nativeEventTarget - ); - rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(rejectEvent); - extracted = accumulate(extracted, rejectEvent); - } - } else { - extracted = accumulate(extracted, grantEvent); - changeResponder(wantsResponderInst, blockHostResponder); - } - return extracted; - } - /** - * A transfer is a negotiation between a currently set responder and the next - * element to claim responder status. Any start event could trigger a transfer - * of responderInst. Any move event could trigger a transfer. - * - * @param {string} topLevelType Record from `BrowserEventConstants`. - * @return {boolean} True if a transfer of responder could possibly occur. - */ +function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) { + return topLevelInst && ( // responderIgnoreScroll: We are trying to migrate away from specifically + // tracking native scroll events here and responderIgnoreScroll indicates we + // will send topTouchCancel to handle canceling touch events instead + topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll || trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE || isStartish(topLevelType) || isMoveish(topLevelType)); +} +/** + * Returns whether or not this touch end event makes it such that there are no + * longer any touches that started inside of the current `responderInst`. + * + * @param {NativeEvent} nativeEvent Native touch end event. + * @return {boolean} Whether or not this touch end event ends the responder. + */ - function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) { - return ( - topLevelInst && // responderIgnoreScroll: We are trying to migrate away from specifically - // tracking native scroll events here and responderIgnoreScroll indicates we - // will send topTouchCancel to handle canceling touch events instead - ((topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll) || - (trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE) || - isStartish(topLevelType) || - isMoveish(topLevelType)) - ); - } - /** - * Returns whether or not this touch end event makes it such that there are no - * longer any touches that started inside of the current `responderInst`. - * - * @param {NativeEvent} nativeEvent Native touch end event. - * @return {boolean} Whether or not this touch end event ends the responder. - */ - function noResponderTouches(nativeEvent) { - var touches = nativeEvent.touches; +function noResponderTouches(nativeEvent) { + var touches = nativeEvent.touches; - if (!touches || touches.length === 0) { - return true; - } + if (!touches || touches.length === 0) { + return true; + } - for (var i = 0; i < touches.length; i++) { - var activeTouch = touches[i]; - var target = activeTouch.target; + for (var i = 0; i < touches.length; i++) { + var activeTouch = touches[i]; + var target = activeTouch.target; - if (target !== null && target !== undefined && target !== 0) { - // Is the original touch location inside of the current responder? - var targetInst = getInstanceFromNode$1(target); + if (target !== null && target !== undefined && target !== 0) { + // Is the original touch location inside of the current responder? + var targetInst = getInstanceFromNode$1(target); - if (isAncestor(responderInst, targetInst)) { - return false; - } - } + if (isAncestor(responderInst, targetInst)) { + return false; } - - return true; } + } - var ResponderEventPlugin = { - /* For unit testing only */ - _getResponder: function () { - return responderInst; - }, - eventTypes: eventTypes, - - /** - * We must be resilient to `targetInst` being `null` on `touchMove` or - * `touchEnd`. On certain platforms, this means that a native scroll has - * assumed control and the original touch targets are destroyed. - */ - extractEvents: function ( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget, - eventSystemFlags - ) { - if (isStartish(topLevelType)) { - trackedTouchCount += 1; - } else if (isEndish(topLevelType)) { - if (trackedTouchCount >= 0) { - trackedTouchCount -= 1; - } else { - { - warn( - "Ended a touch event which was not counted in `trackedTouchCount`." - ); - } + return true; +} - return null; - } +var ResponderEventPlugin = { + /* For unit testing only */ + _getResponder: function () { + return responderInst; + }, + eventTypes: eventTypes, + + /** + * We must be resilient to `targetInst` being `null` on `touchMove` or + * `touchEnd`. On certain platforms, this means that a native scroll has + * assumed control and the original touch targets are destroyed. + */ + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) { + if (isStartish(topLevelType)) { + trackedTouchCount += 1; + } else if (isEndish(topLevelType)) { + if (trackedTouchCount >= 0) { + trackedTouchCount -= 1; + } else { + { + warn('Ended a touch event which was not counted in `trackedTouchCount`.'); } - ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent); - var extracted = canTriggerTransfer( - topLevelType, - targetInst, - nativeEvent - ) - ? setResponderAndExtractTransfer( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) - : null; // Responder may or may not have transferred on a new touch start/move. - // Regardless, whoever is the responder after any potential transfer, we - // direct all touch start/move/ends to them in the form of - // `onResponderMove/Start/End`. These will be called for *every* additional - // finger that move/start/end, dispatched directly to whoever is the - // current responder at that moment, until the responder is "released". - // - // These multiple individual change touch events are are always bookended - // by `onResponderGrant`, and one of - // (`onResponderRelease/onResponderTerminate`). - - var isResponderTouchStart = responderInst && isStartish(topLevelType); - var isResponderTouchMove = responderInst && isMoveish(topLevelType); - var isResponderTouchEnd = responderInst && isEndish(topLevelType); - var incrementalTouch = isResponderTouchStart - ? eventTypes.responderStart - : isResponderTouchMove - ? eventTypes.responderMove - : isResponderTouchEnd - ? eventTypes.responderEnd - : null; - - if (incrementalTouch) { - var gesture = ResponderSyntheticEvent.getPooled( - incrementalTouch, - responderInst, - nativeEvent, - nativeEventTarget - ); - gesture.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(gesture); - extracted = accumulate(extracted, gesture); - } - - var isResponderTerminate = - responderInst && topLevelType === TOP_TOUCH_CANCEL; - var isResponderRelease = - responderInst && - !isResponderTerminate && - isEndish(topLevelType) && - noResponderTouches(nativeEvent); - var finalTouch = isResponderTerminate - ? eventTypes.responderTerminate - : isResponderRelease - ? eventTypes.responderRelease - : null; - - if (finalTouch) { - var finalEvent = ResponderSyntheticEvent.getPooled( - finalTouch, - responderInst, - nativeEvent, - nativeEventTarget - ); - finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(finalEvent); - extracted = accumulate(extracted, finalEvent); - changeResponder(null); - } - - return extracted; - }, - GlobalResponderHandler: null, - injection: { - /** - * @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler - * Object that handles any change in responder. Use this to inject - * integration with an existing touch handling system etc. - */ - injectGlobalResponderHandler: function (GlobalResponderHandler) { - ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler; - } + return null; } - }; - - /** - * Injectable ordering of event plugins. - */ - var eventPluginOrder = null; - /** - * Injectable mapping from names to event plugin modules. - */ + } - var namesToPlugins = {}; + ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent); + var extracted = canTriggerTransfer(topLevelType, targetInst, nativeEvent) ? setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) : null; // Responder may or may not have transferred on a new touch start/move. + // Regardless, whoever is the responder after any potential transfer, we + // direct all touch start/move/ends to them in the form of + // `onResponderMove/Start/End`. These will be called for *every* additional + // finger that move/start/end, dispatched directly to whoever is the + // current responder at that moment, until the responder is "released". + // + // These multiple individual change touch events are are always bookended + // by `onResponderGrant`, and one of + // (`onResponderRelease/onResponderTerminate`). + + var isResponderTouchStart = responderInst && isStartish(topLevelType); + var isResponderTouchMove = responderInst && isMoveish(topLevelType); + var isResponderTouchEnd = responderInst && isEndish(topLevelType); + var incrementalTouch = isResponderTouchStart ? eventTypes.responderStart : isResponderTouchMove ? eventTypes.responderMove : isResponderTouchEnd ? eventTypes.responderEnd : null; + + if (incrementalTouch) { + var gesture = ResponderSyntheticEvent.getPooled(incrementalTouch, responderInst, nativeEvent, nativeEventTarget); + gesture.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(gesture); + extracted = accumulate(extracted, gesture); + } + + var isResponderTerminate = responderInst && topLevelType === TOP_TOUCH_CANCEL; + var isResponderRelease = responderInst && !isResponderTerminate && isEndish(topLevelType) && noResponderTouches(nativeEvent); + var finalTouch = isResponderTerminate ? eventTypes.responderTerminate : isResponderRelease ? eventTypes.responderRelease : null; + + if (finalTouch) { + var finalEvent = ResponderSyntheticEvent.getPooled(finalTouch, responderInst, nativeEvent, nativeEventTarget); + finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(finalEvent); + extracted = accumulate(extracted, finalEvent); + changeResponder(null); + } + + return extracted; + }, + GlobalResponderHandler: null, + injection: { /** - * Recomputes the plugin list using the injected plugins and plugin ordering. - * - * @private + * @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler + * Object that handles any change in responder. Use this to inject + * integration with an existing touch handling system etc. */ + injectGlobalResponderHandler: function (GlobalResponderHandler) { + ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler; + } + } +}; - function recomputePluginOrdering() { - if (!eventPluginOrder) { - // Wait until an `eventPluginOrder` is injected. - return; - } +/** + * Injectable ordering of event plugins. + */ +var eventPluginOrder = null; +/** + * Injectable mapping from names to event plugin modules. + */ - for (var pluginName in namesToPlugins) { - var pluginModule = namesToPlugins[pluginName]; // $FlowFixMe[incompatible-use] found when upgrading Flow +var namesToPlugins = {}; +/** + * Recomputes the plugin list using the injected plugins and plugin ordering. + * + * @private + */ - var pluginIndex = eventPluginOrder.indexOf(pluginName); +function recomputePluginOrdering() { + if (!eventPluginOrder) { + // Wait until an `eventPluginOrder` is injected. + return; + } - if (pluginIndex <= -1) { - throw new Error( - "EventPluginRegistry: Cannot inject event plugins that do not exist in " + - ("the plugin ordering, `" + pluginName + "`.") - ); - } + for (var pluginName in namesToPlugins) { + var pluginModule = namesToPlugins[pluginName]; // $FlowFixMe[incompatible-use] found when upgrading Flow - if (plugins[pluginIndex]) { - continue; - } + var pluginIndex = eventPluginOrder.indexOf(pluginName); - if (!pluginModule.extractEvents) { - throw new Error( - "EventPluginRegistry: Event plugins must implement an `extractEvents` " + - ("method, but `" + pluginName + "` does not.") - ); - } - - plugins[pluginIndex] = pluginModule; - var publishedEvents = pluginModule.eventTypes; - - for (var eventName in publishedEvents) { - if ( - !publishEventForPlugin( - publishedEvents[eventName], - pluginModule, - eventName - ) - ) { - throw new Error( - "EventPluginRegistry: Failed to publish event `" + - eventName + - "` for plugin `" + - pluginName + - "`." - ); - } - } - } + if (pluginIndex <= -1) { + throw new Error('EventPluginRegistry: Cannot inject event plugins that do not exist in ' + ("the plugin ordering, `" + pluginName + "`.")); } - /** - * Publishes an event so that it can be dispatched by the supplied plugin. - * - * @param {object} dispatchConfig Dispatch configuration for the event. - * @param {object} PluginModule Plugin publishing the event. - * @return {boolean} True if the event was successfully published. - * @private - */ - function publishEventForPlugin(dispatchConfig, pluginModule, eventName) { - if (eventNameDispatchConfigs.hasOwnProperty(eventName)) { - throw new Error( - "EventPluginRegistry: More than one plugin attempted to publish the same " + - ("event name, `" + eventName + "`.") - ); - } + if (plugins[pluginIndex]) { + continue; + } - eventNameDispatchConfigs[eventName] = dispatchConfig; - var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames; + if (!pluginModule.extractEvents) { + throw new Error('EventPluginRegistry: Event plugins must implement an `extractEvents` ' + ("method, but `" + pluginName + "` does not.")); + } - if (phasedRegistrationNames) { - for (var phaseName in phasedRegistrationNames) { - if (phasedRegistrationNames.hasOwnProperty(phaseName)) { - var phasedRegistrationName = phasedRegistrationNames[phaseName]; - publishRegistrationName(phasedRegistrationName, pluginModule); - } - } + plugins[pluginIndex] = pluginModule; + var publishedEvents = pluginModule.eventTypes; - return true; - } else if (dispatchConfig.registrationName) { - publishRegistrationName(dispatchConfig.registrationName, pluginModule); - return true; + for (var eventName in publishedEvents) { + if (!publishEventForPlugin(publishedEvents[eventName], pluginModule, eventName)) { + throw new Error("EventPluginRegistry: Failed to publish event `" + eventName + "` for plugin `" + pluginName + "`."); } - - return false; } - /** - * Publishes a registration name that is used to identify dispatched events. - * - * @param {string} registrationName Registration name to add. - * @param {object} PluginModule Plugin publishing the event. - * @private - */ + } +} +/** + * Publishes an event so that it can be dispatched by the supplied plugin. + * + * @param {object} dispatchConfig Dispatch configuration for the event. + * @param {object} PluginModule Plugin publishing the event. + * @return {boolean} True if the event was successfully published. + * @private + */ - function publishRegistrationName( - registrationName, - pluginModule, - eventName - ) { - if (registrationNameModules[registrationName]) { - throw new Error( - "EventPluginRegistry: More than one plugin attempted to publish the same " + - ("registration name, `" + registrationName + "`.") - ); - } - registrationNameModules[registrationName] = pluginModule; +function publishEventForPlugin(dispatchConfig, pluginModule, eventName) { + if (eventNameDispatchConfigs.hasOwnProperty(eventName)) { + throw new Error('EventPluginRegistry: More than one plugin attempted to publish the same ' + ("event name, `" + eventName + "`.")); + } - { - registrationName.toLowerCase(); + eventNameDispatchConfigs[eventName] = dispatchConfig; + var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames; + + if (phasedRegistrationNames) { + for (var phaseName in phasedRegistrationNames) { + if (phasedRegistrationNames.hasOwnProperty(phaseName)) { + var phasedRegistrationName = phasedRegistrationNames[phaseName]; + publishRegistrationName(phasedRegistrationName, pluginModule); } } - /** - * Registers plugins so that they can extract and dispatch events. - */ - - /** - * Ordered list of injected plugins. - */ - var plugins = []; - /** - * Mapping from event name to dispatch config - */ + return true; + } else if (dispatchConfig.registrationName) { + publishRegistrationName(dispatchConfig.registrationName, pluginModule); + return true; + } - var eventNameDispatchConfigs = {}; - /** - * Mapping from registration name to plugin module - */ + return false; +} +/** + * Publishes a registration name that is used to identify dispatched events. + * + * @param {string} registrationName Registration name to add. + * @param {object} PluginModule Plugin publishing the event. + * @private + */ - var registrationNameModules = {}; - /** - * Injects an ordering of plugins (by plugin name). This allows the ordering - * to be decoupled from injection of the actual plugins so that ordering is - * always deterministic regardless of packaging, on-the-fly injection, etc. - * - * @param {array} InjectedEventPluginOrder - * @internal - */ +function publishRegistrationName(registrationName, pluginModule, eventName) { + if (registrationNameModules[registrationName]) { + throw new Error('EventPluginRegistry: More than one plugin attempted to publish the same ' + ("registration name, `" + registrationName + "`.")); + } - function injectEventPluginOrder(injectedEventPluginOrder) { - if (eventPluginOrder) { - throw new Error( - "EventPluginRegistry: Cannot inject event plugin ordering more than " + - "once. You are likely trying to load more than one copy of React." - ); - } // Clone the ordering so it cannot be dynamically mutated. - // $FlowFixMe[method-unbinding] found when upgrading Flow + registrationNameModules[registrationName] = pluginModule; - eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder); - recomputePluginOrdering(); - } - /** - * Injects plugins to be used by plugin event system. The plugin names must be - * in the ordering injected by `injectEventPluginOrder`. - * - * Plugins can be injected as part of page initialization or on-the-fly. - * - * @param {object} injectedNamesToPlugins Map from names to plugin modules. - * @internal - */ + { + registrationName.toLowerCase(); + } +} +/** + * Registers plugins so that they can extract and dispatch events. + */ - function injectEventPluginsByName(injectedNamesToPlugins) { - var isOrderingDirty = false; +/** + * Ordered list of injected plugins. + */ - for (var pluginName in injectedNamesToPlugins) { - if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) { - continue; - } - var pluginModule = injectedNamesToPlugins[pluginName]; +var plugins = []; +/** + * Mapping from event name to dispatch config + */ - if ( - !namesToPlugins.hasOwnProperty(pluginName) || - namesToPlugins[pluginName] !== pluginModule - ) { - if (namesToPlugins[pluginName]) { - throw new Error( - "EventPluginRegistry: Cannot inject two different event plugins " + - ("using the same name, `" + pluginName + "`.") - ); - } +var eventNameDispatchConfigs = {}; +/** + * Mapping from registration name to plugin module + */ - namesToPlugins[pluginName] = pluginModule; - isOrderingDirty = true; - } - } +var registrationNameModules = {}; - if (isOrderingDirty) { - recomputePluginOrdering(); - } - } +/** + * Injects an ordering of plugins (by plugin name). This allows the ordering + * to be decoupled from injection of the actual plugins so that ordering is + * always deterministic regardless of packaging, on-the-fly injection, etc. + * + * @param {array} InjectedEventPluginOrder + * @internal + */ - function getListener(inst, registrationName) { - var stateNode = inst.stateNode; +function injectEventPluginOrder(injectedEventPluginOrder) { + if (eventPluginOrder) { + throw new Error('EventPluginRegistry: Cannot inject event plugin ordering more than ' + 'once. You are likely trying to load more than one copy of React.'); + } // Clone the ordering so it cannot be dynamically mutated. + // $FlowFixMe[method-unbinding] found when upgrading Flow - if (stateNode === null) { - // Work in progress (ex: onload events in incremental mode). - return null; - } - var props = getFiberCurrentPropsFromNode$1(stateNode); + eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder); + recomputePluginOrdering(); +} +/** + * Injects plugins to be used by plugin event system. The plugin names must be + * in the ordering injected by `injectEventPluginOrder`. + * + * Plugins can be injected as part of page initialization or on-the-fly. + * + * @param {object} injectedNamesToPlugins Map from names to plugin modules. + * @internal + */ + +function injectEventPluginsByName(injectedNamesToPlugins) { + var isOrderingDirty = false; - if (props === null) { - // Work in progress. - return null; - } + for (var pluginName in injectedNamesToPlugins) { + if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) { + continue; + } - var listener = props[registrationName]; + var pluginModule = injectedNamesToPlugins[pluginName]; - if (listener && typeof listener !== "function") { - throw new Error( - "Expected `" + - registrationName + - "` listener to be a function, instead got a value of `" + - typeof listener + - "` type." - ); + if (!namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule) { + if (namesToPlugins[pluginName]) { + throw new Error('EventPluginRegistry: Cannot inject two different event plugins ' + ("using the same name, `" + pluginName + "`.")); } - return listener; + namesToPlugins[pluginName] = pluginModule; + isOrderingDirty = true; } + } - var customBubblingEventTypes = - ReactNativePrivateInterface.ReactNativeViewConfigRegistry - .customBubblingEventTypes, - customDirectEventTypes = - ReactNativePrivateInterface.ReactNativeViewConfigRegistry - .customDirectEventTypes; // Start of inline: the below functions were inlined from - // EventPropagator.js, as they deviated from ReactDOM's newer - // implementations. - // $FlowFixMe[missing-local-annot] + if (isOrderingDirty) { + recomputePluginOrdering(); + } +} - function listenerAtPhase(inst, event, propagationPhase) { - var registrationName = - event.dispatchConfig.phasedRegistrationNames[propagationPhase]; - return getListener(inst, registrationName); - } // $FlowFixMe[missing-local-annot] +function getListener(inst, registrationName) { + var stateNode = inst.stateNode; - function accumulateDirectionalDispatches(inst, phase, event) { - { - if (!inst) { - error("Dispatching inst must not be null"); - } - } + if (stateNode === null) { + // Work in progress (ex: onload events in incremental mode). + return null; + } - var listener = listenerAtPhase(inst, event, phase); + var props = getFiberCurrentPropsFromNode$1(stateNode); - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } - } // $FlowFixMe[missing-local-annot] + if (props === null) { + // Work in progress. + return null; + } - function getParent(inst) { - do { - inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. - // That is depending on if we want nested subtrees (layers) to bubble - // events to their parent. We could also go through parentNode on the - // host node but that wouldn't work for React Native and doesn't let us - // do the portal feature. - } while (inst && inst.tag !== HostComponent); + var listener = props[registrationName]; - if (inst) { - return inst; - } + if (listener && typeof listener !== 'function') { + throw new Error("Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type."); + } - return null; + return listener; +} + +var customBubblingEventTypes = ReactNativePrivateInterface.ReactNativeViewConfigRegistry.customBubblingEventTypes, + customDirectEventTypes = ReactNativePrivateInterface.ReactNativeViewConfigRegistry.customDirectEventTypes; // Start of inline: the below functions were inlined from +// EventPropagator.js, as they deviated from ReactDOM's newer +// implementations. +// $FlowFixMe[missing-local-annot] + +function listenerAtPhase(inst, event, propagationPhase) { + var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase]; + return getListener(inst, registrationName); +} // $FlowFixMe[missing-local-annot] + + +function accumulateDirectionalDispatches(inst, phase, event) { + { + if (!inst) { + error('Dispatching inst must not be null'); } - /** - * Simulates the traversal of a two-phase, capture/bubble event dispatch. - */ + } - function traverseTwoPhase(inst, fn, arg, skipBubbling) { - var path = []; + var listener = listenerAtPhase(inst, event, phase); - while (inst) { - path.push(inst); - inst = getParent(inst); - } + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); + } +} // $FlowFixMe[missing-local-annot] - var i; - for (i = path.length; i-- > 0; ) { - fn(path[i], "captured", arg); - } +function getParent(inst) { + do { + inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. + // That is depending on if we want nested subtrees (layers) to bubble + // events to their parent. We could also go through parentNode on the + // host node but that wouldn't work for React Native and doesn't let us + // do the portal feature. + } while (inst && inst.tag !== HostComponent); - if (skipBubbling) { - // Dispatch on target only - fn(path[0], "bubbled", arg); - } else { - for (i = 0; i < path.length; i++) { - fn(path[i], "bubbled", arg); - } - } - } // $FlowFixMe[missing-local-annot] + if (inst) { + return inst; + } - function accumulateTwoPhaseDispatchesSingle(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - traverseTwoPhase( - event._targetInst, - accumulateDirectionalDispatches, - event, - false - ); - } - } // $FlowFixMe[missing-local-annot] + return null; +} +/** + * Simulates the traversal of a two-phase, capture/bubble event dispatch. + */ - function accumulateTwoPhaseDispatches(events) { - forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle); - } // $FlowFixMe[missing-local-annot] - function accumulateCapturePhaseDispatches(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - traverseTwoPhase( - event._targetInst, - accumulateDirectionalDispatches, - event, - true - ); - } - } - /** - * Accumulates without regard to direction, does not look for phased - * registration names. Same as `accumulateDirectDispatchesSingle` but without - * requiring that the `dispatchMarker` be the same as the dispatched ID. - */ +function traverseTwoPhase(inst, fn, arg, skipBubbling) { + var path = []; - function accumulateDispatches(inst, ignoredDirection, event) { - if (inst && event && event.dispatchConfig.registrationName) { - var registrationName = event.dispatchConfig.registrationName; - var listener = getListener(inst, registrationName); + while (inst) { + path.push(inst); + inst = getParent(inst); + } - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } - } - } - /** - * Accumulates dispatches on an `SyntheticEvent`, but only for the - * `dispatchMarker`. - * @param {SyntheticEvent} event - */ + var i; - function accumulateDirectDispatchesSingle(event) { - if (event && event.dispatchConfig.registrationName) { - accumulateDispatches(event._targetInst, null, event); - } + for (i = path.length; i-- > 0;) { + fn(path[i], 'captured', arg); + } + + if (skipBubbling) { + // Dispatch on target only + fn(path[0], 'bubbled', arg); + } else { + for (i = 0; i < path.length; i++) { + fn(path[i], 'bubbled', arg); } + } +} // $FlowFixMe[missing-local-annot] - function accumulateDirectDispatches(events) { - forEachAccumulated(events, accumulateDirectDispatchesSingle); - } // End of inline +function accumulateTwoPhaseDispatchesSingle(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event, false); + } +} // $FlowFixMe[missing-local-annot] - var ReactNativeBridgeEventPlugin = { - eventTypes: {}, - extractEvents: function ( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - if (targetInst == null) { - // Probably a node belonging to another renderer's tree. - return null; - } - var bubbleDispatchConfig = customBubblingEventTypes[topLevelType]; - var directDispatchConfig = customDirectEventTypes[topLevelType]; +function accumulateTwoPhaseDispatches(events) { + forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle); +} // $FlowFixMe[missing-local-annot] - if (!bubbleDispatchConfig && !directDispatchConfig) { - throw new Error( // $FlowFixMe[incompatible-type] - Flow doesn't like this string coercion because DOMTopLevelEventType is opaque - 'Unsupported top level event type "' + topLevelType + '" dispatched' - ); - } - var event = SyntheticEvent.getPooled( - bubbleDispatchConfig || directDispatchConfig, - targetInst, - nativeEvent, - nativeEventTarget - ); +function accumulateCapturePhaseDispatches(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event, true); + } +} +/** + * Accumulates without regard to direction, does not look for phased + * registration names. Same as `accumulateDirectDispatchesSingle` but without + * requiring that the `dispatchMarker` be the same as the dispatched ID. + */ - if (bubbleDispatchConfig) { - var skipBubbling = - event != null && - event.dispatchConfig.phasedRegistrationNames != null && - event.dispatchConfig.phasedRegistrationNames.skipBubbling; - if (skipBubbling) { - accumulateCapturePhaseDispatches(event); - } else { - accumulateTwoPhaseDispatches(event); - } - } else if (directDispatchConfig) { - accumulateDirectDispatches(event); - } else { - return null; - } +function accumulateDispatches(inst, ignoredDirection, event) { + if (inst && event && event.dispatchConfig.registrationName) { + var registrationName = event.dispatchConfig.registrationName; + var listener = getListener(inst, registrationName); - return event; - } - }; + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); + } + } +} +/** + * Accumulates dispatches on an `SyntheticEvent`, but only for the + * `dispatchMarker`. + * @param {SyntheticEvent} event + */ - var ReactNativeEventPluginOrder = [ - "ResponderEventPlugin", - "ReactNativeBridgeEventPlugin" - ]; - /** - * Make sure essential globals are available and are patched correctly. Please don't remove this - * line. Bundles created by react-packager `require` it before executing any application code. This - * ensures it exists in the dependency graph and can be `require`d. - * TODO: require this in packager, not in React #10932517 - */ - /** - * Inject module for resolving DOM hierarchy and plugin ordering. - */ +function accumulateDirectDispatchesSingle(event) { + if (event && event.dispatchConfig.registrationName) { + accumulateDispatches(event._targetInst, null, event); + } +} - injectEventPluginOrder(ReactNativeEventPluginOrder); - /** - * Some important event plugins included by default (without having to require - * them). - */ +function accumulateDirectDispatches(events) { + forEachAccumulated(events, accumulateDirectDispatchesSingle); +} // End of inline - injectEventPluginsByName({ - ResponderEventPlugin: ResponderEventPlugin, - ReactNativeBridgeEventPlugin: ReactNativeBridgeEventPlugin - }); - // Re-export dynamic flags from the internal module. - var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on - // the exports object every time a flag is read. - - var alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries, - consoleManagedByDevToolsDuringStrictMode = - dynamicFlags.consoleManagedByDevToolsDuringStrictMode, - enableAsyncActions = dynamicFlags.enableAsyncActions, - enableEarlyReturnForPropDiffing = - dynamicFlags.enableEarlyReturnForPropDiffing, - enableComponentStackLocations = - dynamicFlags.enableComponentStackLocations, - enableDeferRootSchedulingToMicrotask = - dynamicFlags.enableDeferRootSchedulingToMicrotask, - enableInfiniteRenderLoopDetection = - dynamicFlags.enableInfiniteRenderLoopDetection, - enableRenderableContext = dynamicFlags.enableRenderableContext, - enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane, - passChildrenWhenCloningPersistedNodes = - dynamicFlags.passChildrenWhenCloningPersistedNodes, - useModernStrictMode = dynamicFlags.useModernStrictMode, - disableDefaultPropsExceptForClasses = - dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. - var enableSchedulingProfiler = true; - var enableProfilerTimer = true; - var enableProfilerCommitHooks = true; - var enableProfilerNestedUpdatePhase = true; - var syncLaneExpirationMs = 250; - var transitionLaneExpirationMs = 5000; - var enableLazyContextPropagation = false; - var enableLegacyHidden = false; - var disableLegacyMode = false; - - // Modules provided by RN: - var emptyObject$1 = {}; - /** - * Create a payload that contains all the updates between two sets of props. - * - * These helpers are all encapsulated into a single module, because they use - * mutation as a performance optimization which leads to subtle shared - * dependencies between the code paths. To avoid this mutable state leaking - * across modules, I've kept them isolated to this module. - */ - // Tracks removed keys +var ReactNativeBridgeEventPlugin = { + eventTypes: {}, + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { + if (targetInst == null) { + // Probably a node belonging to another renderer's tree. + return null; + } - var removedKeys = null; - var removedKeyCount = 0; - var deepDifferOptions = { - unsafelyIgnoreFunctions: true - }; + var bubbleDispatchConfig = customBubblingEventTypes[topLevelType]; + var directDispatchConfig = customDirectEventTypes[topLevelType]; - function defaultDiffer(prevProp, nextProp) { - if (typeof nextProp !== "object" || nextProp === null) { - // Scalars have already been checked for equality - return true; - } else { - // For objects and arrays, the default diffing algorithm is a deep compare - return ReactNativePrivateInterface.deepDiffer( - prevProp, - nextProp, - deepDifferOptions - ); - } - } - - function restoreDeletedValuesInNestedArray( - updatePayload, - node, - validAttributes - ) { - if (isArray(node)) { - var i = node.length; - - while (i-- && removedKeyCount > 0) { - restoreDeletedValuesInNestedArray( - updatePayload, - node[i], - validAttributes - ); - } - } else if (node && removedKeyCount > 0) { - var obj = node; - - for (var propKey in removedKeys) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (!removedKeys[propKey]) { - continue; - } + if (!bubbleDispatchConfig && !directDispatchConfig) { + throw new Error( // $FlowFixMe[incompatible-type] - Flow doesn't like this string coercion because DOMTopLevelEventType is opaque + "Unsupported top level event type \"" + topLevelType + "\" dispatched"); + } - var nextProp = obj[propKey]; + var event = SyntheticEvent.getPooled(bubbleDispatchConfig || directDispatchConfig, targetInst, nativeEvent, nativeEventTarget); - if (nextProp === undefined) { - continue; - } + if (bubbleDispatchConfig) { + var skipBubbling = event != null && event.dispatchConfig.phasedRegistrationNames != null && event.dispatchConfig.phasedRegistrationNames.skipBubbling; - var attributeConfig = validAttributes[propKey]; + if (skipBubbling) { + accumulateCapturePhaseDispatches(event); + } else { + accumulateTwoPhaseDispatches(event); + } + } else if (directDispatchConfig) { + accumulateDirectDispatches(event); + } else { + return null; + } - if (!attributeConfig) { - continue; // not a valid native prop - } + return event; + } +}; - if (typeof nextProp === "function") { - // $FlowFixMe[incompatible-type] found when upgrading Flow - nextProp = true; - } +var ReactNativeEventPluginOrder = ['ResponderEventPlugin', 'ReactNativeBridgeEventPlugin']; - if (typeof nextProp === "undefined") { - // $FlowFixMe[incompatible-type] found when upgrading Flow - nextProp = null; - } +/** + * Make sure essential globals are available and are patched correctly. Please don't remove this + * line. Bundles created by react-packager `require` it before executing any application code. This + * ensures it exists in the dependency graph and can be `require`d. + * TODO: require this in packager, not in React #10932517 + */ +/** + * Inject module for resolving DOM hierarchy and plugin ordering. + */ - if (typeof attributeConfig !== "object") { - // case: !Object is the default case - updatePayload[propKey] = nextProp; - } else if ( - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration - var nextValue = - typeof attributeConfig.process === "function" - ? attributeConfig.process(nextProp) - : nextProp; - updatePayload[propKey] = nextValue; - } // $FlowFixMe[incompatible-use] found when upgrading Flow - - removedKeys[propKey] = false; - removedKeyCount--; - } - } - } - - function diffNestedArrayProperty( - updatePayload, - prevArray, - nextArray, - validAttributes - ) { - var minLength = - prevArray.length < nextArray.length - ? prevArray.length - : nextArray.length; - var i; - - for (i = 0; i < minLength; i++) { - // Diff any items in the array in the forward direction. Repeated keys - // will be overwritten by later values. - updatePayload = diffNestedProperty( - updatePayload, - prevArray[i], - nextArray[i], - validAttributes - ); - } - - for (; i < prevArray.length; i++) { - // Clear out all remaining properties. - updatePayload = clearNestedProperty( - updatePayload, - prevArray[i], - validAttributes - ); - } - - for (; i < nextArray.length; i++) { - // Add all remaining properties. - updatePayload = addNestedProperty( - updatePayload, - nextArray[i], - validAttributes - ); - } - - return updatePayload; - } - - function diffNestedProperty( - updatePayload, - prevProp, - nextProp, - validAttributes - ) { - if (!updatePayload && prevProp === nextProp) { - // If no properties have been added, then we can bail out quickly on object - // equality. - return updatePayload; - } - - if (!prevProp || !nextProp) { - if (nextProp) { - return addNestedProperty(updatePayload, nextProp, validAttributes); - } - - if (prevProp) { - return clearNestedProperty(updatePayload, prevProp, validAttributes); - } - - return updatePayload; - } - - if (!isArray(prevProp) && !isArray(nextProp)) { - // Both are leaves, we can diff the leaves. - return diffProperties( - updatePayload, - prevProp, - nextProp, - validAttributes - ); - } - - if (isArray(prevProp) && isArray(nextProp)) { - // Both are arrays, we can diff the arrays. - return diffNestedArrayProperty( - updatePayload, - prevProp, - nextProp, - validAttributes - ); - } +injectEventPluginOrder(ReactNativeEventPluginOrder); +/** + * Some important event plugins included by default (without having to require + * them). + */ - if (isArray(prevProp)) { - return diffProperties( - updatePayload, - ReactNativePrivateInterface.flattenStyle(prevProp), - nextProp, - validAttributes - ); - } +injectEventPluginsByName({ + ResponderEventPlugin: ResponderEventPlugin, + ReactNativeBridgeEventPlugin: ReactNativeBridgeEventPlugin +}); + +// Re-export dynamic flags from the internal module. +var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on +// the exports object every time a flag is read. + +var alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries, + consoleManagedByDevToolsDuringStrictMode = dynamicFlags.consoleManagedByDevToolsDuringStrictMode, + enableAsyncActions = dynamicFlags.enableAsyncActions, + enableEarlyReturnForPropDiffing = dynamicFlags.enableEarlyReturnForPropDiffing, + enableComponentStackLocations = dynamicFlags.enableComponentStackLocations, + enableDeferRootSchedulingToMicrotask = dynamicFlags.enableDeferRootSchedulingToMicrotask, + enableInfiniteRenderLoopDetection = dynamicFlags.enableInfiniteRenderLoopDetection, + enableRenderableContext = dynamicFlags.enableRenderableContext, + enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane, + passChildrenWhenCloningPersistedNodes = dynamicFlags.passChildrenWhenCloningPersistedNodes, + useModernStrictMode = dynamicFlags.useModernStrictMode, + disableDefaultPropsExceptForClasses = dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. +var enableSchedulingProfiler = true; +var enableProfilerTimer = true; +var enableProfilerCommitHooks = true; +var enableProfilerNestedUpdatePhase = true; +var syncLaneExpirationMs = 250; +var transitionLaneExpirationMs = 5000; +var enableLazyContextPropagation = false; +var enableLegacyHidden = false; +var disableLegacyMode = false; + +// Modules provided by RN: +var emptyObject$1 = {}; +/** + * Create a payload that contains all the updates between two sets of props. + * + * These helpers are all encapsulated into a single module, because they use + * mutation as a performance optimization which leads to subtle shared + * dependencies between the code paths. To avoid this mutable state leaking + * across modules, I've kept them isolated to this module. + */ +// Tracks removed keys + +var removedKeys = null; +var removedKeyCount = 0; +var deepDifferOptions = { + unsafelyIgnoreFunctions: true +}; + +function defaultDiffer(prevProp, nextProp) { + if (typeof nextProp !== 'object' || nextProp === null) { + // Scalars have already been checked for equality + return true; + } else { + // For objects and arrays, the default diffing algorithm is a deep compare + return ReactNativePrivateInterface.deepDiffer(prevProp, nextProp, deepDifferOptions); + } +} - return diffProperties( - updatePayload, - prevProp, - ReactNativePrivateInterface.flattenStyle(nextProp), - validAttributes - ); +function restoreDeletedValuesInNestedArray(updatePayload, node, validAttributes) { + if (isArray(node)) { + var i = node.length; + + while (i-- && removedKeyCount > 0) { + restoreDeletedValuesInNestedArray(updatePayload, node[i], validAttributes); } - /** - * addNestedProperty takes a single set of props and valid attribute - * attribute configurations. It processes each prop and adds it to the - * updatePayload. - */ + } else if (node && removedKeyCount > 0) { + var obj = node; - function addNestedProperty(updatePayload, nextProp, validAttributes) { - if (!nextProp) { - return updatePayload; + for (var propKey in removedKeys) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (!removedKeys[propKey]) { + continue; } - if (!isArray(nextProp)) { - // Add each property of the leaf. - return addProperties(updatePayload, nextProp, validAttributes); - } + var nextProp = obj[propKey]; - for (var i = 0; i < nextProp.length; i++) { - // Add all the properties of the array. - updatePayload = addNestedProperty( - updatePayload, - nextProp[i], - validAttributes - ); + if (nextProp === undefined) { + continue; } - return updatePayload; - } - /** - * clearNestedProperty takes a single set of props and valid attributes. It - * adds a null sentinel to the updatePayload, for each prop key. - */ + var attributeConfig = validAttributes[propKey]; - function clearNestedProperty(updatePayload, prevProp, validAttributes) { - if (!prevProp) { - return updatePayload; + if (!attributeConfig) { + continue; // not a valid native prop } - if (!isArray(prevProp)) { - // Add each property of the leaf. - return clearProperties(updatePayload, prevProp, validAttributes); + if (typeof nextProp === 'function') { + // $FlowFixMe[incompatible-type] found when upgrading Flow + nextProp = true; } - for (var i = 0; i < prevProp.length; i++) { - // Add all the properties of the array. - updatePayload = clearNestedProperty( - updatePayload, - prevProp[i], - validAttributes - ); + if (typeof nextProp === 'undefined') { + // $FlowFixMe[incompatible-type] found when upgrading Flow + nextProp = null; } - return updatePayload; - } - /** - * diffProperties takes two sets of props and a set of valid attributes - * and write to updatePayload the values that changed or were deleted. - * If no updatePayload is provided, a new one is created and returned if - * anything changed. - */ - - function diffProperties( - updatePayload, - prevProps, - nextProps, - validAttributes - ) { - var attributeConfig; - var nextProp; - var prevProp; - - for (var propKey in nextProps) { - attributeConfig = validAttributes[propKey]; - - if (!attributeConfig) { - continue; // not a valid native prop - } + if (typeof attributeConfig !== 'object') { + // case: !Object is the default case + updatePayload[propKey] = nextProp; + } else if (typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration + var nextValue = typeof attributeConfig.process === 'function' ? attributeConfig.process(nextProp) : nextProp; + updatePayload[propKey] = nextValue; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - prevProp = prevProps[propKey]; - nextProp = nextProps[propKey]; // functions are converted to booleans as markers that the associated - // events should be sent from native. - if (typeof nextProp === "function") { - nextProp = true; // If nextProp is not a function, then don't bother changing prevProp - // since nextProp will win and go into the updatePayload regardless. + removedKeys[propKey] = false; + removedKeyCount--; + } + } +} - if (typeof prevProp === "function") { - prevProp = true; - } - } // An explicit value of undefined is treated as a null because it overrides - // any other preceding value. +function diffNestedArrayProperty(updatePayload, prevArray, nextArray, validAttributes) { + var minLength = prevArray.length < nextArray.length ? prevArray.length : nextArray.length; + var i; - if (typeof nextProp === "undefined") { - nextProp = null; + for (i = 0; i < minLength; i++) { + // Diff any items in the array in the forward direction. Repeated keys + // will be overwritten by later values. + updatePayload = diffNestedProperty(updatePayload, prevArray[i], nextArray[i], validAttributes); + } - if (typeof prevProp === "undefined") { - prevProp = null; - } - } + for (; i < prevArray.length; i++) { + // Clear out all remaining properties. + updatePayload = clearNestedProperty(updatePayload, prevArray[i], validAttributes); + } - if (removedKeys) { - removedKeys[propKey] = false; - } - - if (updatePayload && updatePayload[propKey] !== undefined) { - // Something else already triggered an update to this key because another - // value diffed. Since we're now later in the nested arrays our value is - // more important so we need to calculate it and override the existing - // value. It doesn't matter if nothing changed, we'll set it anyway. - // Pattern match on: attributeConfig - if (typeof attributeConfig !== "object") { - // case: !Object is the default case - updatePayload[propKey] = nextProp; - } else if ( - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration - var nextValue = - typeof attributeConfig.process === "function" - ? attributeConfig.process(nextProp) - : nextProp; - updatePayload[propKey] = nextValue; - } + for (; i < nextArray.length; i++) { + // Add all remaining properties. + updatePayload = addNestedProperty(updatePayload, nextArray[i], validAttributes); + } - continue; - } + return updatePayload; +} - if (prevProp === nextProp) { - continue; // nothing changed - } // Pattern match on: attributeConfig +function diffNestedProperty(updatePayload, prevProp, nextProp, validAttributes) { + if (!updatePayload && prevProp === nextProp) { + // If no properties have been added, then we can bail out quickly on object + // equality. + return updatePayload; + } - if (typeof attributeConfig !== "object") { - // case: !Object is the default case - if (defaultDiffer(prevProp, nextProp)) { - // a normal leaf has changed - (updatePayload || (updatePayload = {}))[propKey] = nextProp; - } - } else if ( - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration - var shouldUpdate = - prevProp === undefined || - (typeof attributeConfig.diff === "function" - ? attributeConfig.diff(prevProp, nextProp) - : defaultDiffer(prevProp, nextProp)); - - if (shouldUpdate) { - var _nextValue = - typeof attributeConfig.process === "function" // $FlowFixMe[incompatible-use] found when upgrading Flow - ? attributeConfig.process(nextProp) - : nextProp; - - (updatePayload || (updatePayload = {}))[propKey] = _nextValue; - } - } else { - // default: fallthrough case when nested properties are defined - removedKeys = null; - removedKeyCount = 0; // We think that attributeConfig is not CustomAttributeConfiguration at - // this point so we assume it must be AttributeConfiguration. - - updatePayload = diffNestedProperty( - updatePayload, - prevProp, - nextProp, - attributeConfig - ); - - if (removedKeyCount > 0 && updatePayload) { - restoreDeletedValuesInNestedArray( - updatePayload, - nextProp, - attributeConfig - ); - removedKeys = null; - } - } - } // Also iterate through all the previous props to catch any that have been - // removed and make sure native gets the signal so it can reset them to the - // default. + if (!prevProp || !nextProp) { + if (nextProp) { + return addNestedProperty(updatePayload, nextProp, validAttributes); + } - for (var _propKey in prevProps) { - if (nextProps[_propKey] !== undefined) { - continue; // we've already covered this key in the previous pass - } + if (prevProp) { + return clearNestedProperty(updatePayload, prevProp, validAttributes); + } - attributeConfig = validAttributes[_propKey]; + return updatePayload; + } - if (!attributeConfig) { - continue; // not a valid native prop - } + if (!isArray(prevProp) && !isArray(nextProp)) { + // Both are leaves, we can diff the leaves. + return diffProperties(updatePayload, prevProp, nextProp, validAttributes); + } - if (updatePayload && updatePayload[_propKey] !== undefined) { - // This was already updated to a diff result earlier. - continue; - } + if (isArray(prevProp) && isArray(nextProp)) { + // Both are arrays, we can diff the arrays. + return diffNestedArrayProperty(updatePayload, prevProp, nextProp, validAttributes); + } - prevProp = prevProps[_propKey]; + if (isArray(prevProp)) { + return diffProperties(updatePayload, ReactNativePrivateInterface.flattenStyle(prevProp), nextProp, validAttributes); + } - if (prevProp === undefined) { - continue; // was already empty anyway - } // Pattern match on: attributeConfig + return diffProperties(updatePayload, prevProp, ReactNativePrivateInterface.flattenStyle(nextProp), validAttributes); +} +/** + * addNestedProperty takes a single set of props and valid attribute + * attribute configurations. It processes each prop and adds it to the + * updatePayload. + */ - if ( - typeof attributeConfig !== "object" || - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration | !Object - // Flag the leaf property for removal by sending a sentinel. - (updatePayload || (updatePayload = {}))[_propKey] = null; - if (!removedKeys) { - removedKeys = {}; - } +function addNestedProperty(updatePayload, nextProp, validAttributes) { + if (!nextProp) { + return updatePayload; + } - if (!removedKeys[_propKey]) { - removedKeys[_propKey] = true; - removedKeyCount++; - } - } else { - // default: - // This is a nested attribute configuration where all the properties - // were removed so we need to go through and clear out all of them. - updatePayload = clearNestedProperty( - updatePayload, - prevProp, - attributeConfig - ); - } - } + if (!isArray(nextProp)) { + // Add each property of the leaf. + return addProperties(updatePayload, nextProp, validAttributes); + } - return updatePayload; - } - /** - * addProperties adds all the valid props to the payload after being processed. - */ + for (var i = 0; i < nextProp.length; i++) { + // Add all the properties of the array. + updatePayload = addNestedProperty(updatePayload, nextProp[i], validAttributes); + } - function addProperties(updatePayload, props, validAttributes) { - // TODO: Fast path - return diffProperties( - updatePayload, - emptyObject$1, - props, - validAttributes - ); - } - /** - * clearProperties clears all the previous props by adding a null sentinel - * to the payload for each valid key. - */ + return updatePayload; +} +/** + * clearNestedProperty takes a single set of props and valid attributes. It + * adds a null sentinel to the updatePayload, for each prop key. + */ - function clearProperties(updatePayload, prevProps, validAttributes) { - // TODO: Fast path - return diffProperties( - updatePayload, - prevProps, - emptyObject$1, - validAttributes - ); - } - - function create(props, validAttributes) { - return addProperties( - null, // updatePayload - props, - validAttributes - ); - } - function diff(prevProps, nextProps, validAttributes) { - if (enableEarlyReturnForPropDiffing) { - if (prevProps === nextProps) { - return null; // no change - } - } - - return diffProperties( - null, // updatePayload - prevProps, - nextProps, - validAttributes - ); - } - - // Used as a way to call batchedUpdates when we don't have a reference to - // the renderer. Such as when we're dispatching events or if third party - // libraries need to call batchedUpdates. Eventually, this API will go away when - // everything is batched by default. We'll then have a similar API to opt-out of - // scheduled work and instead do synchronous work. - // Defaults - var batchedUpdatesImpl = function (fn, bookkeeping) { - return fn(bookkeeping); - }; - var isInsideEventHandler = false; - function batchedUpdates$1(fn, bookkeeping) { - if (isInsideEventHandler) { - // If we are currently inside another batch, we need to wait until it - // fully completes before restoring state. - return fn(bookkeeping); - } +function clearNestedProperty(updatePayload, prevProp, validAttributes) { + if (!prevProp) { + return updatePayload; + } - isInsideEventHandler = true; + if (!isArray(prevProp)) { + // Add each property of the leaf. + return clearProperties(updatePayload, prevProp, validAttributes); + } - try { - return batchedUpdatesImpl(fn, bookkeeping); - } finally { - isInsideEventHandler = false; - } - } - function setBatchingImplementation( - _batchedUpdatesImpl, - _discreteUpdatesImpl - ) { - batchedUpdatesImpl = _batchedUpdatesImpl; - } + for (var i = 0; i < prevProp.length; i++) { + // Add all the properties of the array. + updatePayload = clearNestedProperty(updatePayload, prevProp[i], validAttributes); + } - /** - * Internal queue of events that have accumulated their dispatches and are - * waiting to have their dispatches executed. - */ + return updatePayload; +} +/** + * diffProperties takes two sets of props and a set of valid attributes + * and write to updatePayload the values that changed or were deleted. + * If no updatePayload is provided, a new one is created and returned if + * anything changed. + */ - var eventQueue = null; - /** - * Dispatches an event and releases it back into the pool, unless persistent. - * - * @param {?object} event Synthetic event to be dispatched. - * @private - */ - function executeDispatchesAndRelease(event) { - if (event) { - executeDispatchesInOrder(event); +function diffProperties(updatePayload, prevProps, nextProps, validAttributes) { + var attributeConfig; + var nextProp; + var prevProp; - if (!event.isPersistent()) { - event.constructor.release(event); - } - } - } // $FlowFixMe[missing-local-annot] + for (var propKey in nextProps) { + attributeConfig = validAttributes[propKey]; - function executeDispatchesAndReleaseTopLevel(e) { - return executeDispatchesAndRelease(e); + if (!attributeConfig) { + continue; // not a valid native prop } - function runEventsInBatch(events) { - if (events !== null) { - eventQueue = accumulateInto(eventQueue, events); - } // Set `eventQueue` to null before processing it so that we can tell if more - // events get enqueued while processing. + prevProp = prevProps[propKey]; + nextProp = nextProps[propKey]; // functions are converted to booleans as markers that the associated + // events should be sent from native. - var processingEventQueue = eventQueue; - eventQueue = null; + if (typeof nextProp === 'function') { + nextProp = true; // If nextProp is not a function, then don't bother changing prevProp + // since nextProp will win and go into the updatePayload regardless. - if (!processingEventQueue) { - return; + if (typeof prevProp === 'function') { + prevProp = true; } + } // An explicit value of undefined is treated as a null because it overrides + // any other preceding value. - forEachAccumulated( - processingEventQueue, - executeDispatchesAndReleaseTopLevel - ); - if (eventQueue) { - throw new Error( - "processEventQueue(): Additional events were enqueued while processing " + - "an event queue. Support for this has not yet been implemented." - ); - } // This would be a good time to rethrow if any of the event handlers threw. + if (typeof nextProp === 'undefined') { + nextProp = null; - rethrowCaughtError(); + if (typeof prevProp === 'undefined') { + prevProp = null; + } } - /** - * Allows registered plugins an opportunity to extract events from top-level - * native browser events. - * - * @return {*} An accumulation of synthetic events. - * @internal - */ + if (removedKeys) { + removedKeys[propKey] = false; + } - function extractPluginEvents( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - var events = null; - var legacyPlugins = plugins; - - for (var i = 0; i < legacyPlugins.length; i++) { - // Not every plugin in the ordering may be loaded at runtime. - var possiblePlugin = legacyPlugins[i]; - - if (possiblePlugin) { - var extractedEvents = possiblePlugin.extractEvents( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ); - - if (extractedEvents) { - events = accumulateInto(events, extractedEvents); - } - } + if (updatePayload && updatePayload[propKey] !== undefined) { + // Something else already triggered an update to this key because another + // value diffed. Since we're now later in the nested arrays our value is + // more important so we need to calculate it and override the existing + // value. It doesn't matter if nothing changed, we'll set it anyway. + // Pattern match on: attributeConfig + if (typeof attributeConfig !== 'object') { + // case: !Object is the default case + updatePayload[propKey] = nextProp; + } else if (typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration + var nextValue = typeof attributeConfig.process === 'function' ? attributeConfig.process(nextProp) : nextProp; + updatePayload[propKey] = nextValue; } - return events; + continue; } - function runExtractedPluginEventsInBatch( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - var events = extractPluginEvents( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ); - runEventsInBatch(events); - } + if (prevProp === nextProp) { + continue; // nothing changed + } // Pattern match on: attributeConfig + - function dispatchEvent(target, topLevelType, nativeEvent) { - var targetFiber = target; - var eventTarget = null; + if (typeof attributeConfig !== 'object') { + // case: !Object is the default case + if (defaultDiffer(prevProp, nextProp)) { + // a normal leaf has changed + (updatePayload || (updatePayload = {}))[propKey] = nextProp; + } + } else if (typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration + var shouldUpdate = prevProp === undefined || (typeof attributeConfig.diff === 'function' ? attributeConfig.diff(prevProp, nextProp) : defaultDiffer(prevProp, nextProp)); - if (targetFiber != null) { - var stateNode = targetFiber.stateNode; // Guard against Fiber being unmounted + if (shouldUpdate) { + var _nextValue = typeof attributeConfig.process === 'function' ? // $FlowFixMe[incompatible-use] found when upgrading Flow + attributeConfig.process(nextProp) : nextProp; - if (stateNode != null) { - // $FlowExpectedError[incompatible-cast] public instances in Fabric do not implement `EventTarget` yet. - eventTarget = getPublicInstance(stateNode); - } + (updatePayload || (updatePayload = {}))[propKey] = _nextValue; } + } else { + // default: fallthrough case when nested properties are defined + removedKeys = null; + removedKeyCount = 0; // We think that attributeConfig is not CustomAttributeConfiguration at + // this point so we assume it must be AttributeConfiguration. - batchedUpdates$1(function () { - // Emit event to the RawEventEmitter. This is an unused-by-default EventEmitter - // that can be used to instrument event performance monitoring (primarily - could be useful - // for other things too). - // - // NOTE: this merely emits events into the EventEmitter below. - // If *you* do not add listeners to the `RawEventEmitter`, - // then all of these emitted events will just blackhole and are no-ops. - // It is available (although not officially supported... yet) if you want to collect - // perf data on event latency in your application, and could also be useful for debugging - // low-level events issues. - // - // If you do not have any event perf monitoring and are extremely concerned about event perf, - // it is safe to disable these "emit" statements; it will prevent checking the size of - // an empty array twice and prevent two no-ops. Practically the overhead is so low that - // we don't think it's worth thinking about in prod; your perf issues probably lie elsewhere. - // - // We emit two events here: one for listeners to this specific event, - // and one for the catchall listener '*', for any listeners that want - // to be notified for all events. - // Note that extracted events are *not* emitted, - // only events that have a 1:1 mapping with a native event, at least for now. - var event = { - eventName: topLevelType, - nativeEvent: nativeEvent - }; // $FlowFixMe[class-object-subtyping] found when upgrading Flow - - ReactNativePrivateInterface.RawEventEmitter.emit(topLevelType, event); // $FlowFixMe[class-object-subtyping] found when upgrading Flow - - ReactNativePrivateInterface.RawEventEmitter.emit("*", event); // Heritage plugin event system - - runExtractedPluginEventsInBatch( - topLevelType, - targetFiber, - nativeEvent, - eventTarget - ); - }); // React Native doesn't use ReactControlledComponent but if it did, here's - // where it would do it. - } - - var NoFlags$1 = - /* */ - 0; - var PerformedWork = - /* */ - 1; - var Placement = - /* */ - 2; - var DidCapture = - /* */ - 128; - var Hydrating = - /* */ - 4096; // You can change the rest (and add more). - - var Update = - /* */ - 4; - /* Skipped value: 0b0000000000000000000000001000; */ - - var ChildDeletion = - /* */ - 16; - var ContentReset = - /* */ - 32; - var Callback = - /* */ - 64; - /* Used by DidCapture: 0b0000000000000000000010000000; */ - - var ForceClientRender = - /* */ - 256; - var Ref = - /* */ - 512; - var Snapshot = - /* */ - 1024; - var Passive$1 = - /* */ - 2048; - /* Used by Hydrating: 0b0000000000000001000000000000; */ - - var Visibility = - /* */ - 8192; - var StoreConsistency = - /* */ - 16384; // It's OK to reuse these bits because these flags are mutually exclusive for - // different fiber types. We should really be doing this for as many flags as - // possible, because we're about to run out of bits. - - var ScheduleRetry = StoreConsistency; - var ShouldSuspendCommit = Visibility; - var DidDefer = ContentReset; - var FormReset = Snapshot; - var LifecycleEffectMask = - Passive$1 | Update | Callback | Ref | Snapshot | StoreConsistency; // Union of all commit flags (flags with the lifetime of a particular commit) - - var HostEffectMask = - /* */ - 32767; // These are not really side effects, but we still reuse this field. - - var Incomplete = - /* */ - 32768; - var ShouldCapture = - /* */ - 65536; - var ForceUpdateForLegacySuspense = - /* */ - 131072; - var Forked = - /* */ - 1048576; // Static tags describe aspects of a fiber that are not specific to a render, - // e.g. a fiber uses a passive effect (even if there are no updates on this particular render). - // This enables us to defer more work in the unmount case, - // since we can defer traversing the tree during layout to look for Passive effects, - // and instead rely on the static flag as a signal that there may be cleanup work. - - var RefStatic = - /* */ - 2097152; - var LayoutStatic = - /* */ - 4194304; - var PassiveStatic = - /* */ - 8388608; - var MaySuspendCommit = - /* */ - 16777216; // Flag used to identify newly inserted fibers. It isn't reset after commit unlike `Placement`. - - var PlacementDEV = - /* */ - 33554432; - var MountLayoutDev = - /* */ - 67108864; - var MountPassiveDev = - /* */ - 134217728; // Groups of flags that are used in the commit phase to skip over trees that - // don't contain effects, by checking subtreeFlags. - - var BeforeMutationMask = // TODO: Remove Update flag from before mutation phase by re-landing Visibility - // flag logic (see #20043) - Update | Snapshot | 0; - var MutationMask = - Placement | - Update | - ChildDeletion | - ContentReset | - Ref | - Hydrating | - Visibility | - FormReset; - var LayoutMask = Update | Callback | Ref | Visibility; // TODO: Split into PassiveMountMask and PassiveUnmountMask - - var PassiveMask = Passive$1 | Visibility | ChildDeletion; // Union of tags that don't get reset on clones. - // This allows certain concepts to persist without recalculating them, - // e.g. whether a subtree contains passive effects or portals. - - var StaticMask = - LayoutStatic | PassiveStatic | RefStatic | MaySuspendCommit; - - // This module only exists as an ESM wrapper around the external CommonJS - var scheduleCallback$3 = Scheduler.unstable_scheduleCallback; - var cancelCallback$1 = Scheduler.unstable_cancelCallback; - var shouldYield = Scheduler.unstable_shouldYield; - var requestPaint = Scheduler.unstable_requestPaint; - var now$1 = Scheduler.unstable_now; - var ImmediatePriority = Scheduler.unstable_ImmediatePriority; - var UserBlockingPriority = Scheduler.unstable_UserBlockingPriority; - var NormalPriority$1 = Scheduler.unstable_NormalPriority; - var IdlePriority = Scheduler.unstable_IdlePriority; // this doesn't actually exist on the scheduler, but it *does* - // on scheduler/unstable_mock, which we'll need for internal testing - - var log$1 = Scheduler.log; - var unstable_setDisableYieldValue = Scheduler.unstable_setDisableYieldValue; - - // Helpers to patch console.logs to avoid logging during side-effect free - // replaying on render function. This currently only patches the object - // lazily which won't cover if the log function was extracted eagerly. - // We could also eagerly patch the method. - var disabledDepth = 0; - var prevLog; - var prevInfo; - var prevWarn; - var prevError; - var prevGroup; - var prevGroupCollapsed; - var prevGroupEnd; - - function disabledLog() {} - - disabledLog.__reactDisabledLog = true; - function disableLogs() { - { - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - prevLog = console.log; - prevInfo = console.info; - prevWarn = console.warn; - prevError = console.error; - prevGroup = console.group; - prevGroupCollapsed = console.groupCollapsed; - prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 - - var props = { - configurable: true, - enumerable: true, - value: disabledLog, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - info: props, - log: props, - warn: props, - error: props, - group: props, - groupCollapsed: props, - groupEnd: props - }); - /* eslint-enable react-internal/no-production-logging */ - } + updatePayload = diffNestedProperty(updatePayload, prevProp, nextProp, attributeConfig); - disabledDepth++; + if (removedKeyCount > 0 && updatePayload) { + restoreDeletedValuesInNestedArray(updatePayload, nextProp, attributeConfig); + removedKeys = null; } } - function reenableLogs() { - { - disabledDepth--; - - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - var props = { - configurable: true, - enumerable: true, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - log: assign({}, props, { - value: prevLog - }), - info: assign({}, props, { - value: prevInfo - }), - warn: assign({}, props, { - value: prevWarn - }), - error: assign({}, props, { - value: prevError - }), - group: assign({}, props, { - value: prevGroup - }), - groupCollapsed: assign({}, props, { - value: prevGroupCollapsed - }), - groupEnd: assign({}, props, { - value: prevGroupEnd - }) - }); - /* eslint-enable react-internal/no-production-logging */ - } + } // Also iterate through all the previous props to catch any that have been + // removed and make sure native gets the signal so it can reset them to the + // default. - if (disabledDepth < 0) { - error( - "disabledDepth fell below zero. " + - "This is a bug in React. Please file an issue." - ); - } - } + + for (var _propKey in prevProps) { + if (nextProps[_propKey] !== undefined) { + continue; // we've already covered this key in the previous pass } - var rendererID = null; - var injectedHook = null; - var injectedProfilingHooks = null; - var hasLoggedError = false; - var isDevToolsPresent = - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined"; - function injectInternals(internals) { - if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === "undefined") { - // No DevTools - return false; - } + attributeConfig = validAttributes[_propKey]; - var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__; + if (!attributeConfig) { + continue; // not a valid native prop + } - if (hook.isDisabled) { - // This isn't a real property on the hook, but it can be set to opt out - // of DevTools integration and associated warnings and logs. - // https://github.com/facebook/react/issues/3877 - return true; - } + if (updatePayload && updatePayload[_propKey] !== undefined) { + // This was already updated to a diff result earlier. + continue; + } - if (!hook.supportsFiber) { - { - error( - "The installed version of React DevTools is too old and will not work " + - "with the current version of React. Please update React DevTools. " + - "https://react.dev/link/react-devtools" - ); - } // DevTools exists, even though it doesn't support Fiber. + prevProp = prevProps[_propKey]; - return true; - } + if (prevProp === undefined) { + continue; // was already empty anyway + } // Pattern match on: attributeConfig - try { - if (enableSchedulingProfiler) { - // Conditionally inject these hooks only if Timeline profiler is supported by this build. - // This gives DevTools a way to feature detect that isn't tied to version number - // (since profiling and timeline are controlled by different feature flags). - internals = assign({}, internals, { - getLaneLabelMap: getLaneLabelMap, - injectProfilingHooks: injectProfilingHooks - }); - } - rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks. + if (typeof attributeConfig !== 'object' || typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration | !Object + // Flag the leaf property for removal by sending a sentinel. + (updatePayload || (updatePayload = {}))[_propKey] = null; - injectedHook = hook; - } catch (err) { - // Catch all errors because it is unsafe to throw during initialization. - { - error("React instrumentation encountered an error: %s.", err); - } + if (!removedKeys) { + removedKeys = {}; } - if (hook.checkDCE) { - // This is the real DevTools. - return true; - } else { - // This is likely a hook installed by Fast Refresh runtime. - return false; + if (!removedKeys[_propKey]) { + removedKeys[_propKey] = true; + removedKeyCount++; } + } else { + // default: + // This is a nested attribute configuration where all the properties + // were removed so we need to go through and clear out all of them. + updatePayload = clearNestedProperty(updatePayload, prevProp, attributeConfig); } - function onScheduleRoot(root, children) { - { - if ( - injectedHook && - typeof injectedHook.onScheduleFiberRoot === "function" - ) { - try { - injectedHook.onScheduleFiberRoot(rendererID, root, children); - } catch (err) { - if (!hasLoggedError) { - hasLoggedError = true; + } - error("React instrumentation encountered an error: %s", err); - } - } - } - } - } - function onCommitRoot(root, eventPriority) { - if ( - injectedHook && - typeof injectedHook.onCommitFiberRoot === "function" - ) { - try { - var didError = (root.current.flags & DidCapture) === DidCapture; + return updatePayload; +} +/** + * addProperties adds all the valid props to the payload after being processed. + */ - if (enableProfilerTimer) { - var schedulerPriority; - switch (eventPriority) { - case DiscreteEventPriority: - schedulerPriority = ImmediatePriority; - break; +function addProperties(updatePayload, props, validAttributes) { + // TODO: Fast path + return diffProperties(updatePayload, emptyObject$1, props, validAttributes); +} +/** + * clearProperties clears all the previous props by adding a null sentinel + * to the payload for each valid key. + */ - case ContinuousEventPriority: - schedulerPriority = UserBlockingPriority; - break; - case DefaultEventPriority: - schedulerPriority = NormalPriority$1; - break; +function clearProperties(updatePayload, prevProps, validAttributes) { + // TODO: Fast path + return diffProperties(updatePayload, prevProps, emptyObject$1, validAttributes); +} - case IdleEventPriority: - schedulerPriority = IdlePriority; - break; +function create(props, validAttributes) { + return addProperties(null, // updatePayload + props, validAttributes); +} +function diff(prevProps, nextProps, validAttributes) { + if (enableEarlyReturnForPropDiffing) { + if (prevProps === nextProps) { + return null; // no change + } + } - default: - schedulerPriority = NormalPriority$1; - break; - } + return diffProperties(null, // updatePayload + prevProps, nextProps, validAttributes); +} - injectedHook.onCommitFiberRoot( - rendererID, - root, - schedulerPriority, - didError - ); +// Used as a way to call batchedUpdates when we don't have a reference to +// the renderer. Such as when we're dispatching events or if third party +// libraries need to call batchedUpdates. Eventually, this API will go away when +// everything is batched by default. We'll then have a similar API to opt-out of +// scheduled work and instead do synchronous work. +// Defaults +var batchedUpdatesImpl = function (fn, bookkeeping) { + return fn(bookkeeping); +}; + +var isInsideEventHandler = false; +function batchedUpdates$1(fn, bookkeeping) { + if (isInsideEventHandler) { + // If we are currently inside another batch, we need to wait until it + // fully completes before restoring state. + return fn(bookkeeping); + } + + isInsideEventHandler = true; + + try { + return batchedUpdatesImpl(fn, bookkeeping); + } finally { + isInsideEventHandler = false; + } +} +function setBatchingImplementation(_batchedUpdatesImpl, _discreteUpdatesImpl) { + batchedUpdatesImpl = _batchedUpdatesImpl; +} + +/** + * Internal queue of events that have accumulated their dispatches and are + * waiting to have their dispatches executed. + */ + +var eventQueue = null; +/** + * Dispatches an event and releases it back into the pool, unless persistent. + * + * @param {?object} event Synthetic event to be dispatched. + * @private + */ + +function executeDispatchesAndRelease(event) { + if (event) { + executeDispatchesInOrder(event); + + if (!event.isPersistent()) { + event.constructor.release(event); + } + } +} // $FlowFixMe[missing-local-annot] + + +function executeDispatchesAndReleaseTopLevel(e) { + return executeDispatchesAndRelease(e); +} + +function runEventsInBatch(events) { + if (events !== null) { + eventQueue = accumulateInto(eventQueue, events); + } // Set `eventQueue` to null before processing it so that we can tell if more + // events get enqueued while processing. + + + var processingEventQueue = eventQueue; + eventQueue = null; + + if (!processingEventQueue) { + return; + } + + forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel); + + if (eventQueue) { + throw new Error('processEventQueue(): Additional events were enqueued while processing ' + 'an event queue. Support for this has not yet been implemented.'); + } // This would be a good time to rethrow if any of the event handlers threw. + + + rethrowCaughtError(); +} + +/** + * Allows registered plugins an opportunity to extract events from top-level + * native browser events. + * + * @return {*} An accumulation of synthetic events. + * @internal + */ + +function extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var events = null; + var legacyPlugins = plugins; + + for (var i = 0; i < legacyPlugins.length; i++) { + // Not every plugin in the ordering may be loaded at runtime. + var possiblePlugin = legacyPlugins[i]; + + if (possiblePlugin) { + var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget); + + if (extractedEvents) { + events = accumulateInto(events, extractedEvents); + } + } + } + + return events; +} + +function runExtractedPluginEventsInBatch(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var events = extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget); + runEventsInBatch(events); +} + +function dispatchEvent(target, topLevelType, nativeEvent) { + var targetFiber = target; + var eventTarget = null; + + if (targetFiber != null) { + var stateNode = targetFiber.stateNode; // Guard against Fiber being unmounted + + if (stateNode != null) { + // $FlowExpectedError[incompatible-cast] public instances in Fabric do not implement `EventTarget` yet. + eventTarget = getPublicInstance(stateNode); + } + } + + batchedUpdates$1(function () { + // Emit event to the RawEventEmitter. This is an unused-by-default EventEmitter + // that can be used to instrument event performance monitoring (primarily - could be useful + // for other things too). + // + // NOTE: this merely emits events into the EventEmitter below. + // If *you* do not add listeners to the `RawEventEmitter`, + // then all of these emitted events will just blackhole and are no-ops. + // It is available (although not officially supported... yet) if you want to collect + // perf data on event latency in your application, and could also be useful for debugging + // low-level events issues. + // + // If you do not have any event perf monitoring and are extremely concerned about event perf, + // it is safe to disable these "emit" statements; it will prevent checking the size of + // an empty array twice and prevent two no-ops. Practically the overhead is so low that + // we don't think it's worth thinking about in prod; your perf issues probably lie elsewhere. + // + // We emit two events here: one for listeners to this specific event, + // and one for the catchall listener '*', for any listeners that want + // to be notified for all events. + // Note that extracted events are *not* emitted, + // only events that have a 1:1 mapping with a native event, at least for now. + var event = { + eventName: topLevelType, + nativeEvent: nativeEvent + }; // $FlowFixMe[class-object-subtyping] found when upgrading Flow + + ReactNativePrivateInterface.RawEventEmitter.emit(topLevelType, event); // $FlowFixMe[class-object-subtyping] found when upgrading Flow + + ReactNativePrivateInterface.RawEventEmitter.emit('*', event); // Heritage plugin event system + + runExtractedPluginEventsInBatch(topLevelType, targetFiber, nativeEvent, eventTarget); + }); // React Native doesn't use ReactControlledComponent but if it did, here's + // where it would do it. +} + +var NoFlags$1 = +/* */ +0; +var PerformedWork = +/* */ +1; +var Placement = +/* */ +2; +var DidCapture = +/* */ +128; +var Hydrating = +/* */ +4096; // You can change the rest (and add more). + +var Update = +/* */ +4; +/* Skipped value: 0b0000000000000000000000001000; */ + +var ChildDeletion = +/* */ +16; +var ContentReset = +/* */ +32; +var Callback = +/* */ +64; +/* Used by DidCapture: 0b0000000000000000000010000000; */ + +var ForceClientRender = +/* */ +256; +var Ref = +/* */ +512; +var Snapshot = +/* */ +1024; +var Passive$1 = +/* */ +2048; +/* Used by Hydrating: 0b0000000000000001000000000000; */ + +var Visibility = +/* */ +8192; +var StoreConsistency = +/* */ +16384; // It's OK to reuse these bits because these flags are mutually exclusive for +// different fiber types. We should really be doing this for as many flags as +// possible, because we're about to run out of bits. + +var ScheduleRetry = StoreConsistency; +var ShouldSuspendCommit = Visibility; +var DidDefer = ContentReset; +var FormReset = Snapshot; +var LifecycleEffectMask = Passive$1 | Update | Callback | Ref | Snapshot | StoreConsistency; // Union of all commit flags (flags with the lifetime of a particular commit) + +var HostEffectMask = +/* */ +32767; // These are not really side effects, but we still reuse this field. + +var Incomplete = +/* */ +32768; +var ShouldCapture = +/* */ +65536; +var ForceUpdateForLegacySuspense = +/* */ +131072; +var Forked = +/* */ +1048576; // Static tags describe aspects of a fiber that are not specific to a render, +// e.g. a fiber uses a passive effect (even if there are no updates on this particular render). +// This enables us to defer more work in the unmount case, +// since we can defer traversing the tree during layout to look for Passive effects, +// and instead rely on the static flag as a signal that there may be cleanup work. + +var RefStatic = +/* */ +2097152; +var LayoutStatic = +/* */ +4194304; +var PassiveStatic = +/* */ +8388608; +var MaySuspendCommit = +/* */ +16777216; // Flag used to identify newly inserted fibers. It isn't reset after commit unlike `Placement`. + +var PlacementDEV = +/* */ +33554432; +var MountLayoutDev = +/* */ +67108864; +var MountPassiveDev = +/* */ +134217728; // Groups of flags that are used in the commit phase to skip over trees that +// don't contain effects, by checking subtreeFlags. + +var BeforeMutationMask = // TODO: Remove Update flag from before mutation phase by re-landing Visibility +// flag logic (see #20043) +Update | Snapshot | (0); +var MutationMask = Placement | Update | ChildDeletion | ContentReset | Ref | Hydrating | Visibility | FormReset; +var LayoutMask = Update | Callback | Ref | Visibility; // TODO: Split into PassiveMountMask and PassiveUnmountMask + +var PassiveMask = Passive$1 | Visibility | ChildDeletion; // Union of tags that don't get reset on clones. +// This allows certain concepts to persist without recalculating them, +// e.g. whether a subtree contains passive effects or portals. + +var StaticMask = LayoutStatic | PassiveStatic | RefStatic | MaySuspendCommit; + +// This module only exists as an ESM wrapper around the external CommonJS +var scheduleCallback$3 = Scheduler.unstable_scheduleCallback; +var cancelCallback$1 = Scheduler.unstable_cancelCallback; +var shouldYield = Scheduler.unstable_shouldYield; +var requestPaint = Scheduler.unstable_requestPaint; +var now$1 = Scheduler.unstable_now; +var ImmediatePriority = Scheduler.unstable_ImmediatePriority; +var UserBlockingPriority = Scheduler.unstable_UserBlockingPriority; +var NormalPriority$1 = Scheduler.unstable_NormalPriority; +var IdlePriority = Scheduler.unstable_IdlePriority; // this doesn't actually exist on the scheduler, but it *does* +// on scheduler/unstable_mock, which we'll need for internal testing + +var log$1 = Scheduler.log; +var unstable_setDisableYieldValue = Scheduler.unstable_setDisableYieldValue; + +// Helpers to patch console.logs to avoid logging during side-effect free +// replaying on render function. This currently only patches the object +// lazily which won't cover if the log function was extracted eagerly. +// We could also eagerly patch the method. +var disabledDepth = 0; +var prevLog; +var prevInfo; +var prevWarn; +var prevError; +var prevGroup; +var prevGroupCollapsed; +var prevGroupEnd; + +function disabledLog() {} + +disabledLog.__reactDisabledLog = true; +function disableLogs() { + { + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + prevLog = console.log; + prevInfo = console.info; + prevWarn = console.warn; + prevError = console.error; + prevGroup = console.group; + prevGroupCollapsed = console.groupCollapsed; + prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 + + var props = { + configurable: true, + enumerable: true, + value: disabledLog, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + info: props, + log: props, + warn: props, + error: props, + group: props, + groupCollapsed: props, + groupEnd: props + }); + /* eslint-enable react-internal/no-production-logging */ + } + + disabledDepth++; + } +} +function reenableLogs() { + { + disabledDepth--; + + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + var props = { + configurable: true, + enumerable: true, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + log: assign({}, props, { + value: prevLog + }), + info: assign({}, props, { + value: prevInfo + }), + warn: assign({}, props, { + value: prevWarn + }), + error: assign({}, props, { + value: prevError + }), + group: assign({}, props, { + value: prevGroup + }), + groupCollapsed: assign({}, props, { + value: prevGroupCollapsed + }), + groupEnd: assign({}, props, { + value: prevGroupEnd + }) + }); + /* eslint-enable react-internal/no-production-logging */ + } + + if (disabledDepth < 0) { + error('disabledDepth fell below zero. ' + 'This is a bug in React. Please file an issue.'); + } + } +} + +var rendererID = null; +var injectedHook = null; +var injectedProfilingHooks = null; +var hasLoggedError = false; +var isDevToolsPresent = typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined'; +function injectInternals(internals) { + if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') { + // No DevTools + return false; + } + + var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__; + + if (hook.isDisabled) { + // This isn't a real property on the hook, but it can be set to opt out + // of DevTools integration and associated warnings and logs. + // https://github.com/facebook/react/issues/3877 + return true; + } + + if (!hook.supportsFiber) { + { + error('The installed version of React DevTools is too old and will not work ' + 'with the current version of React. Please update React DevTools. ' + 'https://react.dev/link/react-devtools'); + } // DevTools exists, even though it doesn't support Fiber. + + + return true; + } + + try { + if (enableSchedulingProfiler) { + // Conditionally inject these hooks only if Timeline profiler is supported by this build. + // This gives DevTools a way to feature detect that isn't tied to version number + // (since profiling and timeline are controlled by different feature flags). + internals = assign({}, internals, { + getLaneLabelMap: getLaneLabelMap, + injectProfilingHooks: injectProfilingHooks + }); + } + + rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks. + + injectedHook = hook; + } catch (err) { + // Catch all errors because it is unsafe to throw during initialization. + { + error('React instrumentation encountered an error: %s.', err); + } + } + + if (hook.checkDCE) { + // This is the real DevTools. + return true; + } else { + // This is likely a hook installed by Fast Refresh runtime. + return false; + } +} +function onScheduleRoot(root, children) { + { + if (injectedHook && typeof injectedHook.onScheduleFiberRoot === 'function') { + try { + injectedHook.onScheduleFiberRoot(rendererID, root, children); + } catch (err) { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); + } + } + } + } +} +function onCommitRoot(root, eventPriority) { + if (injectedHook && typeof injectedHook.onCommitFiberRoot === 'function') { + try { + var didError = (root.current.flags & DidCapture) === DidCapture; + + if (enableProfilerTimer) { + var schedulerPriority; + + switch (eventPriority) { + case DiscreteEventPriority: + schedulerPriority = ImmediatePriority; + break; + + case ContinuousEventPriority: + schedulerPriority = UserBlockingPriority; + break; + + case DefaultEventPriority: + schedulerPriority = NormalPriority$1; + break; + + case IdleEventPriority: + schedulerPriority = IdlePriority; + break; + + default: + schedulerPriority = NormalPriority$1; + break; + } + + injectedHook.onCommitFiberRoot(rendererID, root, schedulerPriority, didError); + } + } catch (err) { + { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); + } + } + } + } +} +function onPostCommitRoot(root) { + if (injectedHook && typeof injectedHook.onPostCommitFiberRoot === 'function') { + try { + injectedHook.onPostCommitFiberRoot(rendererID, root); + } catch (err) { + { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); + } + } + } + } +} +function onCommitUnmount(fiber) { + if (injectedHook && typeof injectedHook.onCommitFiberUnmount === 'function') { + try { + injectedHook.onCommitFiberUnmount(rendererID, fiber); + } catch (err) { + { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); + } + } + } + } +} +function setIsStrictModeForDevtools(newIsStrictMode) { + if (consoleManagedByDevToolsDuringStrictMode) { + if (typeof log$1 === 'function') { + // We're in a test because Scheduler.log only exists + // in SchedulerMock. To reduce the noise in strict mode tests, + // suppress warnings and disable scheduler yielding during the double render + unstable_setDisableYieldValue(newIsStrictMode); + setSuppressWarning(newIsStrictMode); + } + + if (injectedHook && typeof injectedHook.setStrictMode === 'function') { + try { + injectedHook.setStrictMode(rendererID, newIsStrictMode); + } catch (err) { + { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + } + } + } + } else { + if (newIsStrictMode) { + disableLogs(); + } else { + reenableLogs(); + } + } +} // Profiler API hooks + +function injectProfilingHooks(profilingHooks) { + injectedProfilingHooks = profilingHooks; +} + +function getLaneLabelMap() { + { + var map = new Map(); + var lane = 1; + + for (var index = 0; index < TotalLanes; index++) { + var label = getLabelForLane(lane); + map.set(lane, label); + lane *= 2; + } + + return map; + } +} + +function markCommitStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markCommitStarted === 'function') { + injectedProfilingHooks.markCommitStarted(lanes); + } + } +} +function markCommitStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markCommitStopped === 'function') { + injectedProfilingHooks.markCommitStopped(); + } + } +} +function markComponentRenderStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentRenderStarted === 'function') { + injectedProfilingHooks.markComponentRenderStarted(fiber); + } + } +} +function markComponentRenderStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentRenderStopped === 'function') { + injectedProfilingHooks.markComponentRenderStopped(); + } + } +} +function markComponentPassiveEffectMountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectMountStarted === 'function') { + injectedProfilingHooks.markComponentPassiveEffectMountStarted(fiber); + } + } +} +function markComponentPassiveEffectMountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectMountStopped === 'function') { + injectedProfilingHooks.markComponentPassiveEffectMountStopped(); + } + } +} +function markComponentPassiveEffectUnmountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStarted === 'function') { + injectedProfilingHooks.markComponentPassiveEffectUnmountStarted(fiber); + } + } +} +function markComponentPassiveEffectUnmountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStopped === 'function') { + injectedProfilingHooks.markComponentPassiveEffectUnmountStopped(); + } + } +} +function markComponentLayoutEffectMountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectMountStarted === 'function') { + injectedProfilingHooks.markComponentLayoutEffectMountStarted(fiber); + } + } +} +function markComponentLayoutEffectMountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectMountStopped === 'function') { + injectedProfilingHooks.markComponentLayoutEffectMountStopped(); + } + } +} +function markComponentLayoutEffectUnmountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStarted === 'function') { + injectedProfilingHooks.markComponentLayoutEffectUnmountStarted(fiber); + } + } +} +function markComponentLayoutEffectUnmountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStopped === 'function') { + injectedProfilingHooks.markComponentLayoutEffectUnmountStopped(); + } + } +} +function markComponentErrored(fiber, thrownValue, lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentErrored === 'function') { + injectedProfilingHooks.markComponentErrored(fiber, thrownValue, lanes); + } + } +} +function markComponentSuspended(fiber, wakeable, lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentSuspended === 'function') { + injectedProfilingHooks.markComponentSuspended(fiber, wakeable, lanes); + } + } +} +function markLayoutEffectsStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markLayoutEffectsStarted === 'function') { + injectedProfilingHooks.markLayoutEffectsStarted(lanes); + } + } +} +function markLayoutEffectsStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markLayoutEffectsStopped === 'function') { + injectedProfilingHooks.markLayoutEffectsStopped(); + } + } +} +function markPassiveEffectsStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markPassiveEffectsStarted === 'function') { + injectedProfilingHooks.markPassiveEffectsStarted(lanes); + } + } +} +function markPassiveEffectsStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markPassiveEffectsStopped === 'function') { + injectedProfilingHooks.markPassiveEffectsStopped(); + } + } +} +function markRenderStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderStarted === 'function') { + injectedProfilingHooks.markRenderStarted(lanes); + } + } +} +function markRenderYielded() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderYielded === 'function') { + injectedProfilingHooks.markRenderYielded(); + } + } +} +function markRenderStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderStopped === 'function') { + injectedProfilingHooks.markRenderStopped(); + } + } +} +function markRenderScheduled(lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderScheduled === 'function') { + injectedProfilingHooks.markRenderScheduled(lane); + } + } +} +function markForceUpdateScheduled(fiber, lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markForceUpdateScheduled === 'function') { + injectedProfilingHooks.markForceUpdateScheduled(fiber, lane); + } + } +} +function markStateUpdateScheduled(fiber, lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markStateUpdateScheduled === 'function') { + injectedProfilingHooks.markStateUpdateScheduled(fiber, lane); + } + } +} + +var NoMode = +/* */ +0; // TODO: Remove ConcurrentMode by reading from the root tag instead + +var ConcurrentMode = +/* */ +1; +var ProfileMode = +/* */ +2; +var StrictLegacyMode = +/* */ +8; +var StrictEffectsMode = +/* */ +16; +var NoStrictPassiveEffectsMode = +/* */ +64; + +// TODO: This is pretty well supported by browsers. Maybe we can drop it. +var clz32 = Math.clz32 ? Math.clz32 : clz32Fallback; // Count leading zeros. +// Based on: +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32 + +var log = Math.log; +var LN2 = Math.LN2; + +function clz32Fallback(x) { + var asUint = x >>> 0; + + if (asUint === 0) { + return 32; + } + + return 31 - (log(asUint) / LN2 | 0) | 0; +} + +// If those values are changed that package should be rebuilt and redeployed. + +var TotalLanes = 31; +var NoLanes = +/* */ +0; +var NoLane = +/* */ +0; +var SyncHydrationLane = +/* */ +1; +var SyncLane = +/* */ +2; +var SyncLaneIndex = 1; +var InputContinuousHydrationLane = +/* */ +4; +var InputContinuousLane = +/* */ +8; +var DefaultHydrationLane = +/* */ +16; +var DefaultLane = +/* */ +32; +var SyncUpdateLanes = enableUnifiedSyncLane ? SyncLane | InputContinuousLane | DefaultLane : SyncLane; +var TransitionHydrationLane = +/* */ +64; +var TransitionLanes = +/* */ +4194176; +var TransitionLane1 = +/* */ +128; +var TransitionLane2 = +/* */ +256; +var TransitionLane3 = +/* */ +512; +var TransitionLane4 = +/* */ +1024; +var TransitionLane5 = +/* */ +2048; +var TransitionLane6 = +/* */ +4096; +var TransitionLane7 = +/* */ +8192; +var TransitionLane8 = +/* */ +16384; +var TransitionLane9 = +/* */ +32768; +var TransitionLane10 = +/* */ +65536; +var TransitionLane11 = +/* */ +131072; +var TransitionLane12 = +/* */ +262144; +var TransitionLane13 = +/* */ +524288; +var TransitionLane14 = +/* */ +1048576; +var TransitionLane15 = +/* */ +2097152; +var RetryLanes = +/* */ +62914560; +var RetryLane1 = +/* */ +4194304; +var RetryLane2 = +/* */ +8388608; +var RetryLane3 = +/* */ +16777216; +var RetryLane4 = +/* */ +33554432; +var SomeRetryLane = RetryLane1; +var SelectiveHydrationLane = +/* */ +67108864; +var NonIdleLanes = +/* */ +134217727; +var IdleHydrationLane = +/* */ +134217728; +var IdleLane = +/* */ +268435456; +var OffscreenLane = +/* */ +536870912; +var DeferredLane = +/* */ +1073741824; // Any lane that might schedule an update. This is used to detect infinite +// update loops, so it doesn't include hydration lanes or retries. + +var UpdateLanes = SyncLane | InputContinuousLane | DefaultLane | TransitionLanes; // This function is used for the experimental timeline (react-devtools-timeline) +// It should be kept in sync with the Lanes values above. + +function getLabelForLane(lane) { + { + if (lane & SyncHydrationLane) { + return 'SyncHydrationLane'; + } + + if (lane & SyncLane) { + return 'Sync'; + } + + if (lane & InputContinuousHydrationLane) { + return 'InputContinuousHydration'; + } + + if (lane & InputContinuousLane) { + return 'InputContinuous'; + } + + if (lane & DefaultHydrationLane) { + return 'DefaultHydration'; + } + + if (lane & DefaultLane) { + return 'Default'; + } + + if (lane & TransitionHydrationLane) { + return 'TransitionHydration'; + } + + if (lane & TransitionLanes) { + return 'Transition'; + } + + if (lane & RetryLanes) { + return 'Retry'; + } + + if (lane & SelectiveHydrationLane) { + return 'SelectiveHydration'; + } + + if (lane & IdleHydrationLane) { + return 'IdleHydration'; + } + + if (lane & IdleLane) { + return 'Idle'; + } + + if (lane & OffscreenLane) { + return 'Offscreen'; + } + + if (lane & DeferredLane) { + return 'Deferred'; + } + } +} +var NoTimestamp = -1; +var nextTransitionLane = TransitionLane1; +var nextRetryLane = RetryLane1; + +function getHighestPriorityLanes(lanes) { + if (enableUnifiedSyncLane) { + var pendingSyncLanes = lanes & SyncUpdateLanes; + + if (pendingSyncLanes !== 0) { + return pendingSyncLanes; + } + } + + switch (getHighestPriorityLane(lanes)) { + case SyncHydrationLane: + return SyncHydrationLane; + + case SyncLane: + return SyncLane; + + case InputContinuousHydrationLane: + return InputContinuousHydrationLane; + + case InputContinuousLane: + return InputContinuousLane; + + case DefaultHydrationLane: + return DefaultHydrationLane; + + case DefaultLane: + return DefaultLane; + + case TransitionHydrationLane: + return TransitionHydrationLane; + + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + return lanes & TransitionLanes; + + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + return lanes & RetryLanes; + + case SelectiveHydrationLane: + return SelectiveHydrationLane; + + case IdleHydrationLane: + return IdleHydrationLane; + + case IdleLane: + return IdleLane; + + case OffscreenLane: + return OffscreenLane; + + case DeferredLane: + // This shouldn't be reachable because deferred work is always entangled + // with something else. + return NoLanes; + + default: + { + error('Should have found matching lanes. This is a bug in React.'); + } // This shouldn't be reachable, but as a fallback, return the entire bitmask. + + + return lanes; + } +} + +function getNextLanes(root, wipLanes) { + // Early bailout if there's no pending work left. + var pendingLanes = root.pendingLanes; + + if (pendingLanes === NoLanes) { + return NoLanes; + } + + var nextLanes = NoLanes; + var suspendedLanes = root.suspendedLanes; + var pingedLanes = root.pingedLanes; // Do not work on any idle work until all the non-idle work has finished, + // even if the work is suspended. + + var nonIdlePendingLanes = pendingLanes & NonIdleLanes; + + if (nonIdlePendingLanes !== NoLanes) { + var nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes; + + if (nonIdleUnblockedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes); + } else { + var nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes; + + if (nonIdlePingedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(nonIdlePingedLanes); + } + } + } else { + // The only remaining work is Idle. + var unblockedLanes = pendingLanes & ~suspendedLanes; + + if (unblockedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(unblockedLanes); + } else { + if (pingedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(pingedLanes); + } + } + } + + if (nextLanes === NoLanes) { + // This should only be reachable if we're suspended + // TODO: Consider warning in this path if a fallback timer is not scheduled. + return NoLanes; + } // If we're already in the middle of a render, switching lanes will interrupt + // it and we'll lose our progress. We should only do this if the new lanes are + // higher priority. + + + if (wipLanes !== NoLanes && wipLanes !== nextLanes && // If we already suspended with a delay, then interrupting is fine. Don't + // bother waiting until the root is complete. + (wipLanes & suspendedLanes) === NoLanes) { + var nextLane = getHighestPriorityLane(nextLanes); + var wipLane = getHighestPriorityLane(wipLanes); + + if ( // Tests whether the next lane is equal or lower priority than the wip + // one. This works because the bits decrease in priority as you go left. + nextLane >= wipLane || // Default priority updates should not interrupt transition updates. The + // only difference between default updates and transition updates is that + // default updates do not support refresh transitions. + nextLane === DefaultLane && (wipLane & TransitionLanes) !== NoLanes) { + // Keep working on the existing in-progress tree. Do not interrupt. + return wipLanes; + } + } + + return nextLanes; +} +function getEntangledLanes(root, renderLanes) { + var entangledLanes = renderLanes; + + if ((entangledLanes & InputContinuousLane) !== NoLanes) { + // When updates are sync by default, we entangle continuous priority updates + // and default updates, so they render in the same batch. The only reason + // they use separate lanes is because continuous updates should interrupt + // transitions, but default updates should not. + entangledLanes |= entangledLanes & DefaultLane; + } // Check for entangled lanes and add them to the batch. + // + // A lane is said to be entangled with another when it's not allowed to render + // in a batch that does not also include the other lane. Typically we do this + // when multiple updates have the same source, and we only want to respond to + // the most recent event from that source. + // + // Note that we apply entanglements *after* checking for partial work above. + // This means that if a lane is entangled during an interleaved event while + // it's already rendering, we won't interrupt it. This is intentional, since + // entanglement is usually "best effort": we'll try our best to render the + // lanes in the same batch, but it's not worth throwing out partially + // completed work in order to do it. + // TODO: Reconsider this. The counter-argument is that the partial work + // represents an intermediate state, which we don't want to show to the user. + // And by spending extra time finishing it, we're increasing the amount of + // time it takes to show the final state, which is what they are actually + // waiting for. + // + // For those exceptions where entanglement is semantically important, + // we should ensure that there is no partial work at the + // time we apply the entanglement. + + + var allEntangledLanes = root.entangledLanes; + + if (allEntangledLanes !== NoLanes) { + var entanglements = root.entanglements; + var lanes = entangledLanes & allEntangledLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + entangledLanes |= entanglements[index]; + lanes &= ~lane; + } + } + + return entangledLanes; +} + +function computeExpirationTime(lane, currentTime) { + switch (lane) { + case SyncHydrationLane: + case SyncLane: + case InputContinuousHydrationLane: + case InputContinuousLane: + // User interactions should expire slightly more quickly. + // + // NOTE: This is set to the corresponding constant as in Scheduler.js. + // When we made it larger, a product metric in www regressed, suggesting + // there's a user interaction that's being starved by a series of + // synchronous updates. If that theory is correct, the proper solution is + // to fix the starvation. However, this scenario supports the idea that + // expiration times are an important safeguard when starvation + // does happen. + return currentTime + syncLaneExpirationMs; + + case DefaultHydrationLane: + case DefaultLane: + case TransitionHydrationLane: + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + return currentTime + transitionLaneExpirationMs; + + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + // TODO: Retries should be allowed to expire if they are CPU bound for + // too long, but when I made this change it caused a spike in browser + // crashes. There must be some other underlying bug; not super urgent but + // ideally should figure out why and fix it. Unfortunately we don't have + // a repro for the crashes, only detected via production metrics. + return NoTimestamp; + + case SelectiveHydrationLane: + case IdleHydrationLane: + case IdleLane: + case OffscreenLane: + case DeferredLane: + // Anything idle priority or lower should never expire. + return NoTimestamp; + + default: + { + error('Should have found matching lanes. This is a bug in React.'); + } + + return NoTimestamp; + } +} + +function markStarvedLanesAsExpired(root, currentTime) { + // TODO: This gets called every time we yield. We can optimize by storing + // the earliest expiration time on the root. Then use that to quickly bail out + // of this function. + var pendingLanes = root.pendingLanes; + var suspendedLanes = root.suspendedLanes; + var pingedLanes = root.pingedLanes; + var expirationTimes = root.expirationTimes; // Iterate through the pending lanes and check if we've reached their + // expiration time. If so, we'll assume the update is being starved and mark + // it as expired to force it to finish. + // TODO: We should be able to replace this with upgradePendingLanesToSync + // + // We exclude retry lanes because those must always be time sliced, in order + // to unwrap uncached promises. + // TODO: Write a test for this + + var lanes = pendingLanes & ~RetryLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + var expirationTime = expirationTimes[index]; + + if (expirationTime === NoTimestamp) { + // Found a pending lane with no expiration time. If it's not suspended, or + // if it's pinged, assume it's CPU-bound. Compute a new expiration time + // using the current time. + if ((lane & suspendedLanes) === NoLanes || (lane & pingedLanes) !== NoLanes) { + // Assumes timestamps are monotonically increasing. + expirationTimes[index] = computeExpirationTime(lane, currentTime); + } + } else if (expirationTime <= currentTime) { + // This lane expired + root.expiredLanes |= lane; + } + + lanes &= ~lane; + } +} // This returns the highest priority pending lanes regardless of whether they +function getLanesToRetrySynchronouslyOnError(root, originallyAttemptedLanes) { + if (root.errorRecoveryDisabledLanes & originallyAttemptedLanes) { + // The error recovery mechanism is disabled until these lanes are cleared. + return NoLanes; + } + + var everythingButOffscreen = root.pendingLanes & ~OffscreenLane; + + if (everythingButOffscreen !== NoLanes) { + return everythingButOffscreen; + } + + if (everythingButOffscreen & OffscreenLane) { + return OffscreenLane; + } + + return NoLanes; +} +function includesSyncLane(lanes) { + return (lanes & (SyncLane | SyncHydrationLane)) !== NoLanes; +} +function includesNonIdleWork(lanes) { + return (lanes & NonIdleLanes) !== NoLanes; +} +function includesOnlyRetries(lanes) { + return (lanes & RetryLanes) === lanes; +} +function includesOnlyNonUrgentLanes(lanes) { + // TODO: Should hydration lanes be included here? This function is only + // used in `updateDeferredValueImpl`. + var UrgentLanes = SyncLane | InputContinuousLane | DefaultLane; + return (lanes & UrgentLanes) === NoLanes; +} +function includesOnlyTransitions(lanes) { + return (lanes & TransitionLanes) === lanes; +} +function includesBlockingLane(root, lanes) { + + var SyncDefaultLanes = InputContinuousHydrationLane | InputContinuousLane | DefaultHydrationLane | DefaultLane; + return (lanes & SyncDefaultLanes) !== NoLanes; +} +function includesExpiredLane(root, lanes) { + // This is a separate check from includesBlockingLane because a lane can + // expire after a render has already started. + return (lanes & root.expiredLanes) !== NoLanes; +} +function isTransitionLane(lane) { + return (lane & TransitionLanes) !== NoLanes; +} +function claimNextTransitionLane() { + // Cycle through the lanes, assigning each new transition to the next lane. + // In most cases, this means every transition gets its own lane, until we + // run out of lanes and cycle back to the beginning. + var lane = nextTransitionLane; + nextTransitionLane <<= 1; + + if ((nextTransitionLane & TransitionLanes) === NoLanes) { + nextTransitionLane = TransitionLane1; + } + + return lane; +} +function claimNextRetryLane() { + var lane = nextRetryLane; + nextRetryLane <<= 1; + + if ((nextRetryLane & RetryLanes) === NoLanes) { + nextRetryLane = RetryLane1; + } + + return lane; +} +function getHighestPriorityLane(lanes) { + return lanes & -lanes; +} +function pickArbitraryLane(lanes) { + // This wrapper function gets inlined. Only exists so to communicate that it + // doesn't matter which bit is selected; you can pick any bit without + // affecting the algorithms where its used. Here I'm using + // getHighestPriorityLane because it requires the fewest operations. + return getHighestPriorityLane(lanes); +} + +function pickArbitraryLaneIndex(lanes) { + return 31 - clz32(lanes); +} + +function laneToIndex(lane) { + return pickArbitraryLaneIndex(lane); +} + +function includesSomeLane(a, b) { + return (a & b) !== NoLanes; +} +function isSubsetOfLanes(set, subset) { + return (set & subset) === subset; +} +function mergeLanes(a, b) { + return a | b; +} +function removeLanes(set, subset) { + return set & ~subset; +} +function intersectLanes(a, b) { + return a & b; +} // Seems redundant, but it changes the type from a single lane (used for +// updates) to a group of lanes (used for flushing work). + +function laneToLanes(lane) { + return lane; +} +function createLaneMap(initial) { + // Intentionally pushing one by one. + // https://v8.dev/blog/elements-kinds#avoid-creating-holes + var laneMap = []; + + for (var i = 0; i < TotalLanes; i++) { + laneMap.push(initial); + } + + return laneMap; +} +function markRootUpdated$1(root, updateLane) { + root.pendingLanes |= updateLane; // If there are any suspended transitions, it's possible this new update + // could unblock them. Clear the suspended lanes so that we can try rendering + // them again. + // + // TODO: We really only need to unsuspend only lanes that are in the + // `subtreeLanes` of the updated fiber, or the update lanes of the return + // path. This would exclude suspended updates in an unrelated sibling tree, + // since there's no way for this update to unblock it. + // + // We don't do this if the incoming update is idle, because we never process + // idle updates until after all the regular updates have finished; there's no + // way it could unblock a transition. + + if (updateLane !== IdleLane) { + root.suspendedLanes = NoLanes; + root.pingedLanes = NoLanes; + } +} +function markRootSuspended$1(root, suspendedLanes, spawnedLane) { + root.suspendedLanes |= suspendedLanes; + root.pingedLanes &= ~suspendedLanes; // The suspended lanes are no longer CPU-bound. Clear their expiration times. + + var expirationTimes = root.expirationTimes; + var lanes = suspendedLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + expirationTimes[index] = NoTimestamp; + lanes &= ~lane; + } + + if (spawnedLane !== NoLane) { + markSpawnedDeferredLane(root, spawnedLane, suspendedLanes); + } +} +function markRootPinged$1(root, pingedLanes) { + root.pingedLanes |= root.suspendedLanes & pingedLanes; +} +function markRootFinished(root, remainingLanes, spawnedLane) { + var noLongerPendingLanes = root.pendingLanes & ~remainingLanes; + root.pendingLanes = remainingLanes; // Let's try everything again + + root.suspendedLanes = NoLanes; + root.pingedLanes = NoLanes; + root.expiredLanes &= remainingLanes; + root.entangledLanes &= remainingLanes; + root.errorRecoveryDisabledLanes &= remainingLanes; + root.shellSuspendCounter = 0; + var entanglements = root.entanglements; + var expirationTimes = root.expirationTimes; + var hiddenUpdates = root.hiddenUpdates; // Clear the lanes that no longer have pending work + + var lanes = noLongerPendingLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + entanglements[index] = NoLanes; + expirationTimes[index] = NoTimestamp; + var hiddenUpdatesForLane = hiddenUpdates[index]; + + if (hiddenUpdatesForLane !== null) { + hiddenUpdates[index] = null; // "Hidden" updates are updates that were made to a hidden component. They + // have special logic associated with them because they may be entangled + // with updates that occur outside that tree. But once the outer tree + // commits, they behave like regular updates. + + for (var i = 0; i < hiddenUpdatesForLane.length; i++) { + var update = hiddenUpdatesForLane[i]; + + if (update !== null) { + update.lane &= ~OffscreenLane; + } + } + } + + lanes &= ~lane; + } + + if (spawnedLane !== NoLane) { + markSpawnedDeferredLane(root, spawnedLane, // This render finished successfully without suspending, so we don't need + // to entangle the spawned task with the parent task. + NoLanes); + } +} + +function markSpawnedDeferredLane(root, spawnedLane, entangledLanes) { + // This render spawned a deferred task. Mark it as pending. + root.pendingLanes |= spawnedLane; + root.suspendedLanes &= ~spawnedLane; // Entangle the spawned lane with the DeferredLane bit so that we know it + // was the result of another render. This lets us avoid a useDeferredValue + // waterfall — only the first level will defer. + + var spawnedLaneIndex = laneToIndex(spawnedLane); + root.entangledLanes |= spawnedLane; + root.entanglements[spawnedLaneIndex] |= DeferredLane | // If the parent render task suspended, we must also entangle those lanes + // with the spawned task, so that the deferred task includes all the same + // updates that the parent task did. We can exclude any lane that is not + // used for updates (e.g. Offscreen). + entangledLanes & UpdateLanes; +} + +function markRootEntangled(root, entangledLanes) { + // In addition to entangling each of the given lanes with each other, we also + // have to consider _transitive_ entanglements. For each lane that is already + // entangled with *any* of the given lanes, that lane is now transitively + // entangled with *all* the given lanes. + // + // Translated: If C is entangled with A, then entangling A with B also + // entangles C with B. + // + // If this is hard to grasp, it might help to intentionally break this + // function and look at the tests that fail in ReactTransition-test.js. Try + // commenting out one of the conditions below. + var rootEntangledLanes = root.entangledLanes |= entangledLanes; + var entanglements = root.entanglements; + var lanes = rootEntangledLanes; + + while (lanes) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + + if ( // Is this one of the newly entangled lanes? + lane & entangledLanes | // Is this lane transitively entangled with the newly entangled lanes? + entanglements[index] & entangledLanes) { + entanglements[index] |= entangledLanes; + } + + lanes &= ~lane; + } +} +function upgradePendingLaneToSync(root, lane) { + // Since we're upgrading the priority of the given lane, there is now pending + // sync work. + root.pendingLanes |= SyncLane; // Entangle the sync lane with the lane we're upgrading. This means SyncLane + // will not be allowed to finish without also finishing the given lane. + + root.entangledLanes |= SyncLane; + root.entanglements[SyncLaneIndex] |= lane; +} +function markHiddenUpdate(root, update, lane) { + var index = laneToIndex(lane); + var hiddenUpdates = root.hiddenUpdates; + var hiddenUpdatesForLane = hiddenUpdates[index]; + + if (hiddenUpdatesForLane === null) { + hiddenUpdates[index] = [update]; + } else { + hiddenUpdatesForLane.push(update); + } + + update.lane = lane | OffscreenLane; +} +function getBumpedLaneForHydration(root, renderLanes) { + var renderLane = getHighestPriorityLane(renderLanes); + var lane; + + if (enableUnifiedSyncLane && (renderLane & SyncUpdateLanes) !== NoLane) { + lane = SyncHydrationLane; + } else { + switch (renderLane) { + case SyncLane: + lane = SyncHydrationLane; + break; + + case InputContinuousLane: + lane = InputContinuousHydrationLane; + break; + + case DefaultLane: + lane = DefaultHydrationLane; + break; + + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + lane = TransitionHydrationLane; + break; + + case IdleLane: + lane = IdleHydrationLane; + break; + + default: + // Everything else is already either a hydration lane, or shouldn't + // be retried at a hydration lane. + lane = NoLane; + break; + } + } // Check if the lane we chose is suspended. If so, that indicates that we + // already attempted and failed to hydrate at that level. Also check if we're + // already rendering that lane, which is rare but could happen. + + + if ((lane & (root.suspendedLanes | renderLanes)) !== NoLane) { + // Give up trying to hydrate and fall back to client render. + return NoLane; + } + + return lane; +} +function addFiberToLanesMap(root, fiber, lanes) { + + if (!isDevToolsPresent) { + return; + } + + var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; + + while (lanes > 0) { + var index = laneToIndex(lanes); + var lane = 1 << index; + var updaters = pendingUpdatersLaneMap[index]; + updaters.add(fiber); + lanes &= ~lane; + } +} +function movePendingFibersToMemoized(root, lanes) { + + if (!isDevToolsPresent) { + return; + } + + var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; + var memoizedUpdaters = root.memoizedUpdaters; + + while (lanes > 0) { + var index = laneToIndex(lanes); + var lane = 1 << index; + var updaters = pendingUpdatersLaneMap[index]; + + if (updaters.size > 0) { + updaters.forEach(function (fiber) { + var alternate = fiber.alternate; + + if (alternate === null || !memoizedUpdaters.has(alternate)) { + memoizedUpdaters.add(fiber); + } + }); + updaters.clear(); + } + + lanes &= ~lane; + } +} +function getTransitionsForLanes(root, lanes) { + { + return null; + } +} + +var NoEventPriority = NoLane; +var DiscreteEventPriority = SyncLane; +var ContinuousEventPriority = InputContinuousLane; +var DefaultEventPriority = DefaultLane; +var IdleEventPriority = IdleLane; +function higherEventPriority(a, b) { + return a !== 0 && a < b ? a : b; +} +function lowerEventPriority(a, b) { + return a === 0 || a > b ? a : b; +} +function isHigherEventPriority(a, b) { + return a !== 0 && a < b; +} +function eventPriorityToLane(updatePriority) { + return updatePriority; +} +function lanesToEventPriority(lanes) { + var lane = getHighestPriorityLane(lanes); + + if (!isHigherEventPriority(DiscreteEventPriority, lane)) { + return DiscreteEventPriority; + } + + if (!isHigherEventPriority(ContinuousEventPriority, lane)) { + return ContinuousEventPriority; + } + + if (includesNonIdleWork(lane)) { + return DefaultEventPriority; + } + + return IdleEventPriority; +} + +// Renderers that don't support mutation +// can re-export everything from this module. +function shim$2() { + throw new Error('The current renderer does not support mutation. ' + 'This error is likely caused by a bug in React. ' + 'Please file an issue.'); +} // Mutation (when unsupported) +var commitMount = shim$2; + +// Renderers that don't support hydration +// can re-export everything from this module. +function shim$1() { + throw new Error('The current renderer does not support hydration. ' + 'This error is likely caused by a bug in React. ' + 'Please file an issue.'); +} // Hydration (when unsupported) + + +var supportsHydration = false; +var isSuspenseInstancePending = shim$1; +var isSuspenseInstanceFallback = shim$1; +var getSuspenseInstanceFallbackErrorDetails = shim$1; +var registerSuspenseInstanceRetry = shim$1; + +// Renderers that don't support hydration +// can re-export everything from this module. +function shim() { + throw new Error('The current renderer does not support Resources. ' + 'This error is likely caused by a bug in React. ' + 'Please file an issue.'); +} // Resources (when unsupported) +var suspendResource = shim; + +var _nativeFabricUIManage = nativeFabricUIManager, + createNode = _nativeFabricUIManage.createNode, + cloneNodeWithNewChildren = _nativeFabricUIManage.cloneNodeWithNewChildren, + cloneNodeWithNewChildrenAndProps = _nativeFabricUIManage.cloneNodeWithNewChildrenAndProps, + cloneNodeWithNewProps = _nativeFabricUIManage.cloneNodeWithNewProps, + createChildNodeSet = _nativeFabricUIManage.createChildSet, + appendChildNode = _nativeFabricUIManage.appendChild, + appendChildNodeToSet = _nativeFabricUIManage.appendChildToSet, + completeRoot = _nativeFabricUIManage.completeRoot, + registerEventHandler = _nativeFabricUIManage.registerEventHandler, + FabricDefaultPriority = _nativeFabricUIManage.unstable_DefaultEventPriority, + FabricDiscretePriority = _nativeFabricUIManage.unstable_DiscreteEventPriority, + fabricGetCurrentEventPriority = _nativeFabricUIManage.unstable_getCurrentEventPriority; +var getViewConfigForType = ReactNativePrivateInterface.ReactNativeViewConfigRegistry.get; // Counter for uniquely identifying views. +// % 10 === 1 means it is a rootTag. +// % 2 === 0 means it is a Fabric tag. +// This means that they never overlap. + +var nextReactTag = 2; // TODO: Remove this conditional once all changes have propagated. + +if (registerEventHandler) { + /** + * Register the event emitter with the native bridge + */ + registerEventHandler(dispatchEvent); +} +function appendInitialChild(parentInstance, child) { + appendChildNode(parentInstance.node, child.node); +} +function createInstance(type, props, rootContainerInstance, hostContext, internalInstanceHandle) { + var tag = nextReactTag; + nextReactTag += 2; + var viewConfig = getViewConfigForType(type); + + { + for (var key in viewConfig.validAttributes) { + if (props.hasOwnProperty(key)) { + ReactNativePrivateInterface.deepFreezeAndThrowOnMutationInDev(props[key]); + } + } + } + + var updatePayload = create(props, viewConfig.validAttributes); + var node = createNode(tag, // reactTag + viewConfig.uiViewClassName, // viewName + rootContainerInstance, // rootTag + updatePayload, // props + internalInstanceHandle // internalInstanceHandle + ); + var component = ReactNativePrivateInterface.createPublicInstance(tag, viewConfig, internalInstanceHandle); + return { + node: node, + canonical: { + nativeTag: tag, + viewConfig: viewConfig, + currentProps: props, + internalInstanceHandle: internalInstanceHandle, + publicInstance: component + } + }; +} +function createTextInstance(text, rootContainerInstance, hostContext, internalInstanceHandle) { + { + if (!hostContext.isInAParentText) { + error('Text strings must be rendered within a component.'); + } + } + + var tag = nextReactTag; + nextReactTag += 2; + var node = createNode(tag, // reactTag + 'RCTRawText', // viewName + rootContainerInstance, // rootTag + { + text: text + }, // props + internalInstanceHandle // instance handle + ); + return { + node: node + }; +} +function getRootHostContext(rootContainerInstance) { + return { + isInAParentText: false + }; +} +function getChildHostContext(parentHostContext, type) { + var prevIsInAParentText = parentHostContext.isInAParentText; + var isInAParentText = type === 'AndroidTextInput' || // Android + type === 'RCTMultilineTextInputView' || // iOS + type === 'RCTSinglelineTextInputView' || // iOS + type === 'RCTText' || type === 'RCTVirtualText'; // TODO: If this is an offscreen host container, we should reuse the + // parent context. + + if (prevIsInAParentText !== isInAParentText) { + return { + isInAParentText: isInAParentText + }; + } else { + return parentHostContext; + } +} +function getPublicInstance(instance) { + if (instance.canonical != null && instance.canonical.publicInstance != null) { + return instance.canonical.publicInstance; + } // For compatibility with the legacy renderer, in case it's used with Fabric + // in the same app. + // $FlowExpectedError[prop-missing] + + + if (instance._nativeTag != null) { + // $FlowExpectedError[incompatible-return] + return instance; + } + + return null; +} + +function getPublicTextInstance(textInstance, internalInstanceHandle) { + if (textInstance.publicInstance == null) { + textInstance.publicInstance = ReactNativePrivateInterface.createPublicTextInstance(internalInstanceHandle); + } + + return textInstance.publicInstance; +} + +function getPublicInstanceFromInternalInstanceHandle(internalInstanceHandle) { + var instance = internalInstanceHandle.stateNode; // React resets all the fields in the fiber when the component is unmounted + // to prevent memory leaks. + + if (instance == null) { + return null; + } + + if (internalInstanceHandle.tag === HostText) { + var textInstance = instance; + return getPublicTextInstance(textInstance, internalInstanceHandle); + } + + var elementInstance = internalInstanceHandle.stateNode; + return getPublicInstance(elementInstance); +} +function shouldSetTextContent(type, props) { + // TODO (bvaughn) Revisit this decision. + // Always returning false simplifies the createInstance() implementation, + // But creates an additional child Fiber for raw text children. + // No additional native views are created though. + // It's not clear to me which is better so I'm deferring for now. + // More context @ github.com/facebook/react/pull/8560#discussion_r92111303 + return false; +} +var currentUpdatePriority = NoEventPriority; +function setCurrentUpdatePriority(newPriority) { + currentUpdatePriority = newPriority; +} +function getCurrentUpdatePriority() { + return currentUpdatePriority; +} +function resolveUpdatePriority() { + if (currentUpdatePriority !== NoEventPriority) { + return currentUpdatePriority; + } + + var currentEventPriority = fabricGetCurrentEventPriority ? fabricGetCurrentEventPriority() : null; + + if (currentEventPriority != null) { + switch (currentEventPriority) { + case FabricDiscretePriority: + return DiscreteEventPriority; + + case FabricDefaultPriority: + default: + return DefaultEventPriority; + } + } + + return DefaultEventPriority; +} +function shouldAttemptEagerTransition() { + return false; +} // The Fabric renderer is secondary to the existing React Native renderer. + +var warnsIfNotActing = false; +var scheduleTimeout = setTimeout; +var cancelTimeout = clearTimeout; +var noTimeout = -1; // ------------------- +function cloneInstance(instance, type, oldProps, newProps, keepChildren, newChildSet) { + var viewConfig = instance.canonical.viewConfig; + var updatePayload = diff(oldProps, newProps, viewConfig.validAttributes); // TODO: If the event handlers have changed, we need to update the current props + // in the commit phase but there is no host config hook to do it yet. + // So instead we hack it by updating it in the render phase. + + instance.canonical.currentProps = newProps; + var node = instance.node; + var clone; + + if (keepChildren) { + if (updatePayload !== null) { + clone = cloneNodeWithNewProps(node, updatePayload); + } else { + // No changes + return instance; + } + } else { + // If passChildrenWhenCloningPersistedNodes is enabled, children will be non-null + if (newChildSet != null) { + if (updatePayload !== null) { + clone = cloneNodeWithNewChildrenAndProps(node, newChildSet, updatePayload); + } else { + clone = cloneNodeWithNewChildren(node, newChildSet); + } + } else { + if (updatePayload !== null) { + clone = cloneNodeWithNewChildrenAndProps(node, updatePayload); + } else { + clone = cloneNodeWithNewChildren(node); + } + } + } + + return { + node: clone, + canonical: instance.canonical + }; +} +function cloneHiddenInstance(instance, type, props) { + var viewConfig = instance.canonical.viewConfig; + var node = instance.node; + var updatePayload = create({ + style: { + display: 'none' + } + }, viewConfig.validAttributes); + return { + node: cloneNodeWithNewProps(node, updatePayload), + canonical: instance.canonical + }; +} +function cloneHiddenTextInstance(instance, text) { + throw new Error('Not yet implemented.'); +} +function createContainerChildSet() { + if (passChildrenWhenCloningPersistedNodes) { + return []; + } else { + return createChildNodeSet(); + } +} +function appendChildToContainerChildSet(childSet, child) { + if (passChildrenWhenCloningPersistedNodes) { + childSet.push(child.node); + } else { + appendChildNodeToSet(childSet, child.node); + } +} +function finalizeContainerChildren(container, newChildren) { + completeRoot(container, newChildren); +} +function replaceContainerChildren(container, newChildren) {// Noop - children will be replaced in finalizeContainerChildren +} +function preloadInstance(type, props) { + return true; +} +function waitForCommitToBeReady() { + return null; +} +var NotPendingTransition = null; +// Microtasks +// ------------------- + +var supportsMicrotasks = typeof RN$enableMicrotasksInReact !== 'undefined' && !!RN$enableMicrotasksInReact; +var scheduleMicrotask = typeof queueMicrotask === 'function' ? queueMicrotask : scheduleTimeout; + +// This is ok in DOM because they types are interchangeable, but in React Native +// they aren't. + +function getInstanceFromNode(node) { + var instance = node; // In React Native, node is never a text instance + + if (instance.canonical != null && instance.canonical.internalInstanceHandle != null) { + return instance.canonical.internalInstanceHandle; + } // $FlowFixMe[incompatible-return] DevTools incorrectly passes a fiber in React Native. + + + return node; +} + +function getNodeFromInstance(fiber) { + var publicInstance = getPublicInstance(fiber.stateNode); + + if (publicInstance == null) { + throw new Error('Could not find host instance from fiber'); + } + + return publicInstance; +} + +function getFiberCurrentPropsFromNode(instance) { + return instance.canonical.currentProps; +} + +var ReactFabricGlobalResponderHandler = { + onChange: function (from, to, blockNativeResponder) { + if (from && from.stateNode) { + // equivalent to clearJSResponder + nativeFabricUIManager.setIsJSResponder(from.stateNode.node, false, blockNativeResponder || false); + } + + if (to && to.stateNode) { + // equivalent to setJSResponder + nativeFabricUIManager.setIsJSResponder(to.stateNode.node, true, blockNativeResponder || false); + } + } +}; + +setComponentTree(getFiberCurrentPropsFromNode, getInstanceFromNode, getNodeFromInstance); +ResponderEventPlugin.injection.injectGlobalResponderHandler(ReactFabricGlobalResponderHandler); + +var LegacyRoot = 0; +var ConcurrentRoot = 1; + +/** + * `ReactInstanceMap` maintains a mapping from a public facing stateful + * instance (key) and the internal representation (value). This allows public + * methods to accept the user facing instance as an argument and map them back + * to internal methods. + * + * Note that this module is currently shared and assumed to be stateless. + * If this becomes an actual Map, that will break. + */ +function get(key) { + return key._reactInternals; +} +function set(key, value) { + key._reactInternals = value; +} + +// ATTENTION +// When adding new symbols to this file, +// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' +// The Symbol used to tag the ReactElement-like types. +var REACT_ELEMENT_TYPE = Symbol.for('react.element'); +var REACT_PORTAL_TYPE = Symbol.for('react.portal'); +var REACT_FRAGMENT_TYPE = Symbol.for('react.fragment'); +var REACT_STRICT_MODE_TYPE = Symbol.for('react.strict_mode'); +var REACT_PROFILER_TYPE = Symbol.for('react.profiler'); +var REACT_PROVIDER_TYPE = Symbol.for('react.provider'); // TODO: Delete with enableRenderableContext + +var REACT_CONSUMER_TYPE = Symbol.for('react.consumer'); +var REACT_CONTEXT_TYPE = Symbol.for('react.context'); +var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref'); +var REACT_SUSPENSE_TYPE = Symbol.for('react.suspense'); +var REACT_SUSPENSE_LIST_TYPE = Symbol.for('react.suspense_list'); +var REACT_MEMO_TYPE = Symbol.for('react.memo'); +var REACT_LAZY_TYPE = Symbol.for('react.lazy'); +var REACT_SCOPE_TYPE = Symbol.for('react.scope'); +var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for('react.debug_trace_mode'); +var REACT_OFFSCREEN_TYPE = Symbol.for('react.offscreen'); +var REACT_LEGACY_HIDDEN_TYPE = Symbol.for('react.legacy_hidden'); +var REACT_TRACING_MARKER_TYPE = Symbol.for('react.tracing_marker'); +var REACT_MEMO_CACHE_SENTINEL = Symbol.for('react.memo_cache_sentinel'); +var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; +var FAUX_ITERATOR_SYMBOL = '@@iterator'; +function getIteratorFn(maybeIterable) { + if (maybeIterable === null || typeof maybeIterable !== 'object') { + return null; + } + + var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]; + + if (typeof maybeIterator === 'function') { + return maybeIterator; + } + + return null; +} + +function getWrappedName$1(outerType, innerType, wrapperName) { + var displayName = outerType.displayName; + + if (displayName) { + return displayName; + } + + var functionName = innerType.displayName || innerType.name || ''; + return functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName; +} // Keep in sync with react-reconciler/getComponentNameFromFiber + + +function getContextName$1(type) { + return type.displayName || 'Context'; +} + +var REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference'); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. + +function getComponentNameFromType(type) { + if (type == null) { + // Host root, text node or just invalid type. + return null; + } + + if (typeof type === 'function') { + if (type.$$typeof === REACT_CLIENT_REFERENCE) { + // TODO: Create a convention for naming client references with debug info. + return null; + } + + return type.displayName || type.name || null; + } + + if (typeof type === 'string') { + return type; + } + + switch (type) { + case REACT_FRAGMENT_TYPE: + return 'Fragment'; + + case REACT_PORTAL_TYPE: + return 'Portal'; + + case REACT_PROFILER_TYPE: + return 'Profiler'; + + case REACT_STRICT_MODE_TYPE: + return 'StrictMode'; + + case REACT_SUSPENSE_TYPE: + return 'Suspense'; - error("React instrumentation encountered an error: %s", err); - } - } - } - } - } - function onPostCommitRoot(root) { - if ( - injectedHook && - typeof injectedHook.onPostCommitFiberRoot === "function" - ) { - try { - injectedHook.onPostCommitFiberRoot(rendererID, root); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + case REACT_SUSPENSE_LIST_TYPE: + return 'SuspenseList'; - error("React instrumentation encountered an error: %s", err); - } - } - } - } - } - function onCommitUnmount(fiber) { - if ( - injectedHook && - typeof injectedHook.onCommitFiberUnmount === "function" - ) { - try { - injectedHook.onCommitFiberUnmount(rendererID, fiber); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + } - error("React instrumentation encountered an error: %s", err); - } - } - } + if (typeof type === 'object') { + { + if (typeof type.tag === 'number') { + error('Received an unexpected object in getComponentNameFromType(). ' + 'This is likely a bug in React. Please file an issue.'); } } - function setIsStrictModeForDevtools(newIsStrictMode) { - if (consoleManagedByDevToolsDuringStrictMode) { - if (typeof log$1 === "function") { - // We're in a test because Scheduler.log only exists - // in SchedulerMock. To reduce the noise in strict mode tests, - // suppress warnings and disable scheduler yielding during the double render - unstable_setDisableYieldValue(newIsStrictMode); - setSuppressWarning(newIsStrictMode); + + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + if (enableRenderableContext) { + return null; + } else { + var provider = type; + return getContextName$1(provider._context) + '.Provider'; } - if (injectedHook && typeof injectedHook.setStrictMode === "function") { - try { - injectedHook.setStrictMode(rendererID, newIsStrictMode); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + case REACT_CONTEXT_TYPE: + var context = type; - error("React instrumentation encountered an error: %s", err); - } - } - } + if (enableRenderableContext) { + return getContextName$1(context) + '.Provider'; + } else { + return getContextName$1(context) + '.Consumer'; } - } else { - if (newIsStrictMode) { - disableLogs(); + + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + var consumer = type; + return getContextName$1(consumer._context) + '.Consumer'; } else { - reenableLogs(); + return null; } - } - } // Profiler API hooks - function injectProfilingHooks(profilingHooks) { - injectedProfilingHooks = profilingHooks; - } + case REACT_FORWARD_REF_TYPE: + return getWrappedName$1(type, type.render, 'ForwardRef'); - function getLaneLabelMap() { - { - var map = new Map(); - var lane = 1; + case REACT_MEMO_TYPE: + var outerName = type.displayName || null; - for (var index = 0; index < TotalLanes; index++) { - var label = getLabelForLane(lane); - map.set(lane, label); - lane *= 2; + if (outerName !== null) { + return outerName; } - return map; - } - } + return getComponentNameFromType(type.type) || 'Memo'; - function markCommitStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markCommitStarted === "function" - ) { - injectedProfilingHooks.markCommitStarted(lanes); - } - } - } - function markCommitStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markCommitStopped === "function" - ) { - injectedProfilingHooks.markCommitStopped(); - } - } - } - function markComponentRenderStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentRenderStarted === - "function" - ) { - injectedProfilingHooks.markComponentRenderStarted(fiber); - } - } - } - function markComponentRenderStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentRenderStopped === - "function" - ) { - injectedProfilingHooks.markComponentRenderStopped(); - } - } - } - function markComponentPassiveEffectMountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectMountStarted === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectMountStarted(fiber); - } - } - } - function markComponentPassiveEffectMountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectMountStopped === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectMountStopped(); - } - } - } - function markComponentPassiveEffectUnmountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStarted === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectUnmountStarted( - fiber - ); - } - } - } - function markComponentPassiveEffectUnmountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStopped === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectUnmountStopped(); - } - } - } - function markComponentLayoutEffectMountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectMountStarted === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectMountStarted(fiber); - } - } - } - function markComponentLayoutEffectMountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectMountStopped === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectMountStopped(); - } - } - } - function markComponentLayoutEffectUnmountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStarted === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectUnmountStarted(fiber); - } - } - } - function markComponentLayoutEffectUnmountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStopped === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectUnmountStopped(); - } - } - } - function markComponentErrored(fiber, thrownValue, lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentErrored === "function" - ) { - injectedProfilingHooks.markComponentErrored( - fiber, - thrownValue, - lanes - ); - } - } - } - function markComponentSuspended(fiber, wakeable, lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentSuspended === "function" - ) { - injectedProfilingHooks.markComponentSuspended(fiber, wakeable, lanes); - } - } - } - function markLayoutEffectsStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markLayoutEffectsStarted === "function" - ) { - injectedProfilingHooks.markLayoutEffectsStarted(lanes); - } - } - } - function markLayoutEffectsStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markLayoutEffectsStopped === "function" - ) { - injectedProfilingHooks.markLayoutEffectsStopped(); - } - } - } - function markPassiveEffectsStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markPassiveEffectsStarted === "function" - ) { - injectedProfilingHooks.markPassiveEffectsStarted(lanes); - } - } - } - function markPassiveEffectsStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markPassiveEffectsStopped === "function" - ) { - injectedProfilingHooks.markPassiveEffectsStopped(); + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; + + try { + return getComponentNameFromType(init(payload)); + } catch (x) { + return null; + } } - } } - function markRenderStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderStarted === "function" - ) { - injectedProfilingHooks.markRenderStarted(lanes); - } + } + + return null; +} + +function getWrappedName(outerType, innerType, wrapperName) { + var functionName = innerType.displayName || innerType.name || ''; + return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName); +} // Keep in sync with shared/getComponentNameFromType + + +function getContextName(type) { + return type.displayName || 'Context'; +} + +function getComponentNameFromOwner(owner) { + if (typeof owner.tag === 'number') { + return getComponentNameFromFiber(owner); + } + + if (typeof owner.name === 'string') { + return owner.name; + } + + return null; +} +function getComponentNameFromFiber(fiber) { + var tag = fiber.tag, + type = fiber.type; + + switch (tag) { + case CacheComponent: + return 'Cache'; + + case ContextConsumer: + if (enableRenderableContext) { + var consumer = type; + return getContextName(consumer._context) + '.Consumer'; + } else { + var context = type; + return getContextName(context) + '.Consumer'; } - } - function markRenderYielded() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderYielded === "function" - ) { - injectedProfilingHooks.markRenderYielded(); - } + + case ContextProvider: + if (enableRenderableContext) { + var _context = type; + return getContextName(_context) + '.Provider'; + } else { + var provider = type; + return getContextName(provider._context) + '.Provider'; } - } - function markRenderStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderStopped === "function" - ) { - injectedProfilingHooks.markRenderStopped(); - } + + case DehydratedFragment: + return 'DehydratedFragment'; + + case ForwardRef: + return getWrappedName(type, type.render, 'ForwardRef'); + + case Fragment: + return 'Fragment'; + + case HostHoistable: + case HostSingleton: + case HostComponent: + // Host component type is the display name (e.g. "div", "View") + return type; + + case HostPortal: + return 'Portal'; + + case HostRoot: + return 'Root'; + + case HostText: + return 'Text'; + + case LazyComponent: + // Name comes from the type in this case; we don't have a tag. + return getComponentNameFromType(type); + + case Mode: + if (type === REACT_STRICT_MODE_TYPE) { + // Don't be less specific than shared/getComponentNameFromType + return 'StrictMode'; } - } - function markRenderScheduled(lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderScheduled === "function" - ) { - injectedProfilingHooks.markRenderScheduled(lane); - } + + return 'Mode'; + + case OffscreenComponent: + return 'Offscreen'; + + case Profiler: + return 'Profiler'; + + case ScopeComponent: + return 'Scope'; + + case SuspenseComponent: + return 'Suspense'; + + case SuspenseListComponent: + return 'SuspenseList'; + + case TracingMarkerComponent: + return 'TracingMarker'; + // The display name for these tags come from the user-provided type: + + case IncompleteClassComponent: + case IncompleteFunctionComponent: + + // Fallthrough + + case ClassComponent: + case FunctionComponent: + case MemoComponent: + case SimpleMemoComponent: + if (typeof type === 'function') { + return type.displayName || type.name || null; } - } - function markForceUpdateScheduled(fiber, lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markForceUpdateScheduled === "function" - ) { - injectedProfilingHooks.markForceUpdateScheduled(fiber, lane); - } + + if (typeof type === 'string') { + return type; } - } - function markStateUpdateScheduled(fiber, lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markStateUpdateScheduled === "function" - ) { - injectedProfilingHooks.markStateUpdateScheduled(fiber, lane); - } - } - } - - var NoMode = - /* */ - 0; // TODO: Remove ConcurrentMode by reading from the root tag instead - - var ConcurrentMode = - /* */ - 1; - var ProfileMode = - /* */ - 2; - var StrictLegacyMode = - /* */ - 8; - var StrictEffectsMode = - /* */ - 16; - var NoStrictPassiveEffectsMode = - /* */ - 64; - - // TODO: This is pretty well supported by browsers. Maybe we can drop it. - var clz32 = Math.clz32 ? Math.clz32 : clz32Fallback; // Count leading zeros. - // Based on: - // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32 - - var log = Math.log; - var LN2 = Math.LN2; - - function clz32Fallback(x) { - var asUint = x >>> 0; - - if (asUint === 0) { - return 32; - } - - return (31 - ((log(asUint) / LN2) | 0)) | 0; - } - - // If those values are changed that package should be rebuilt and redeployed. - - var TotalLanes = 31; - var NoLanes = - /* */ - 0; - var NoLane = - /* */ - 0; - var SyncHydrationLane = - /* */ - 1; - var SyncLane = - /* */ - 2; - var SyncLaneIndex = 1; - var InputContinuousHydrationLane = - /* */ - 4; - var InputContinuousLane = - /* */ - 8; - var DefaultHydrationLane = - /* */ - 16; - var DefaultLane = - /* */ - 32; - var SyncUpdateLanes = enableUnifiedSyncLane - ? SyncLane | InputContinuousLane | DefaultLane - : SyncLane; - var TransitionHydrationLane = - /* */ - 64; - var TransitionLanes = - /* */ - 4194176; - var TransitionLane1 = - /* */ - 128; - var TransitionLane2 = - /* */ - 256; - var TransitionLane3 = - /* */ - 512; - var TransitionLane4 = - /* */ - 1024; - var TransitionLane5 = - /* */ - 2048; - var TransitionLane6 = - /* */ - 4096; - var TransitionLane7 = - /* */ - 8192; - var TransitionLane8 = - /* */ - 16384; - var TransitionLane9 = - /* */ - 32768; - var TransitionLane10 = - /* */ - 65536; - var TransitionLane11 = - /* */ - 131072; - var TransitionLane12 = - /* */ - 262144; - var TransitionLane13 = - /* */ - 524288; - var TransitionLane14 = - /* */ - 1048576; - var TransitionLane15 = - /* */ - 2097152; - var RetryLanes = - /* */ - 62914560; - var RetryLane1 = - /* */ - 4194304; - var RetryLane2 = - /* */ - 8388608; - var RetryLane3 = - /* */ - 16777216; - var RetryLane4 = - /* */ - 33554432; - var SomeRetryLane = RetryLane1; - var SelectiveHydrationLane = - /* */ - 67108864; - var NonIdleLanes = - /* */ - 134217727; - var IdleHydrationLane = - /* */ - 134217728; - var IdleLane = - /* */ - 268435456; - var OffscreenLane = - /* */ - 536870912; - var DeferredLane = - /* */ - 1073741824; // Any lane that might schedule an update. This is used to detect infinite - // update loops, so it doesn't include hydration lanes or retries. - - var UpdateLanes = - SyncLane | InputContinuousLane | DefaultLane | TransitionLanes; // This function is used for the experimental timeline (react-devtools-timeline) - // It should be kept in sync with the Lanes values above. - - function getLabelForLane(lane) { - { - if (lane & SyncHydrationLane) { - return "SyncHydrationLane"; - } - if (lane & SyncLane) { - return "Sync"; - } + break; - if (lane & InputContinuousHydrationLane) { - return "InputContinuousHydration"; - } + } - if (lane & InputContinuousLane) { - return "InputContinuous"; - } + return null; +} - if (lane & DefaultHydrationLane) { - return "DefaultHydration"; - } +function getNearestMountedFiber(fiber) { + var node = fiber; + var nearestMounted = fiber; - if (lane & DefaultLane) { - return "Default"; - } + if (!fiber.alternate) { + // If there is no alternate, this might be a new tree that isn't inserted + // yet. If it is, then it will have a pending insertion effect on it. + var nextNode = node; - if (lane & TransitionHydrationLane) { - return "TransitionHydration"; - } + do { + node = nextNode; - if (lane & TransitionLanes) { - return "Transition"; - } + if ((node.flags & (Placement | Hydrating)) !== NoFlags$1) { + // This is an insertion or in-progress hydration. The nearest possible + // mounted fiber is the parent but we need to continue to figure out + // if that one is still mounted. + nearestMounted = node.return; + } // $FlowFixMe[incompatible-type] we bail out when we get a null - if (lane & RetryLanes) { - return "Retry"; - } - if (lane & SelectiveHydrationLane) { - return "SelectiveHydration"; - } + nextNode = node.return; + } while (nextNode); + } else { + while (node.return) { + node = node.return; + } + } - if (lane & IdleHydrationLane) { - return "IdleHydration"; - } + if (node.tag === HostRoot) { + // TODO: Check if this was a nested HostRoot when used with + // renderContainerIntoSubtree. + return nearestMounted; + } // If we didn't hit the root, that means that we're in an disconnected tree + // that has been unmounted. - if (lane & IdleLane) { - return "Idle"; - } - if (lane & OffscreenLane) { - return "Offscreen"; - } + return null; +} +function isFiberMounted(fiber) { + return getNearestMountedFiber(fiber) === fiber; +} +function isMounted(component) { + { + var owner = ReactSharedInternals.owner; - if (lane & DeferredLane) { - return "Deferred"; - } + if (owner !== null && owner.tag === ClassComponent) { + var ownerFiber = owner; + var instance = ownerFiber.stateNode; + + if (!instance._warnedAboutRefsInRender) { + error('%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentNameFromFiber(ownerFiber) || 'A component'); } + + instance._warnedAboutRefsInRender = true; } - var NoTimestamp = -1; - var nextTransitionLane = TransitionLane1; - var nextRetryLane = RetryLane1; + } - function getHighestPriorityLanes(lanes) { - if (enableUnifiedSyncLane) { - var pendingSyncLanes = lanes & SyncUpdateLanes; + var fiber = get(component); - if (pendingSyncLanes !== 0) { - return pendingSyncLanes; - } - } + if (!fiber) { + return false; + } + + return getNearestMountedFiber(fiber) === fiber; +} + +function assertIsMounted(fiber) { + if (getNearestMountedFiber(fiber) !== fiber) { + throw new Error('Unable to find node on an unmounted component.'); + } +} - switch (getHighestPriorityLane(lanes)) { - case SyncHydrationLane: - return SyncHydrationLane; +function findCurrentFiberUsingSlowPath(fiber) { + var alternate = fiber.alternate; - case SyncLane: - return SyncLane; + if (!alternate) { + // If there is no alternate, then we only need to check if it is mounted. + var nearestMounted = getNearestMountedFiber(fiber); - case InputContinuousHydrationLane: - return InputContinuousHydrationLane; + if (nearestMounted === null) { + throw new Error('Unable to find node on an unmounted component.'); + } - case InputContinuousLane: - return InputContinuousLane; + if (nearestMounted !== fiber) { + return null; + } - case DefaultHydrationLane: - return DefaultHydrationLane; + return fiber; + } // If we have two possible branches, we'll walk backwards up to the root + // to see what path the root points to. On the way we may hit one of the + // special cases and we'll deal with them. - case DefaultLane: - return DefaultLane; - case TransitionHydrationLane: - return TransitionHydrationLane; + var a = fiber; + var b = alternate; - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - return lanes & TransitionLanes; + while (true) { + var parentA = a.return; - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - return lanes & RetryLanes; + if (parentA === null) { + // We're at the root. + break; + } - case SelectiveHydrationLane: - return SelectiveHydrationLane; + var parentB = parentA.alternate; - case IdleHydrationLane: - return IdleHydrationLane; + if (parentB === null) { + // There is no alternate. This is an unusual case. Currently, it only + // happens when a Suspense component is hidden. An extra fragment fiber + // is inserted in between the Suspense fiber and its children. Skip + // over this extra fragment fiber and proceed to the next parent. + var nextParent = parentA.return; - case IdleLane: - return IdleLane; + if (nextParent !== null) { + a = b = nextParent; + continue; + } // If there's no parent, we're at the root. - case OffscreenLane: - return OffscreenLane; - case DeferredLane: - // This shouldn't be reachable because deferred work is always entangled - // with something else. - return NoLanes; + break; + } // If both copies of the parent fiber point to the same child, we can + // assume that the child is current. This happens when we bailout on low + // priority: the bailed out fiber's child reuses the current child. - default: - { - error("Should have found matching lanes. This is a bug in React."); - } // This shouldn't be reachable, but as a fallback, return the entire bitmask. - return lanes; - } - } + if (parentA.child === parentB.child) { + var child = parentA.child; - function getNextLanes(root, wipLanes) { - // Early bailout if there's no pending work left. - var pendingLanes = root.pendingLanes; + while (child) { + if (child === a) { + // We've determined that A is the current branch. + assertIsMounted(parentA); + return fiber; + } - if (pendingLanes === NoLanes) { - return NoLanes; - } + if (child === b) { + // We've determined that B is the current branch. + assertIsMounted(parentA); + return alternate; + } - var nextLanes = NoLanes; - var suspendedLanes = root.suspendedLanes; - var pingedLanes = root.pingedLanes; // Do not work on any idle work until all the non-idle work has finished, - // even if the work is suspended. + child = child.sibling; + } // We should never have an alternate for any mounting node. So the only + // way this could possibly happen is if this was unmounted, if at all. - var nonIdlePendingLanes = pendingLanes & NonIdleLanes; - if (nonIdlePendingLanes !== NoLanes) { - var nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes; + throw new Error('Unable to find node on an unmounted component.'); + } - if (nonIdleUnblockedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes); - } else { - var nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes; + if (a.return !== b.return) { + // The return pointer of A and the return pointer of B point to different + // fibers. We assume that return pointers never criss-cross, so A must + // belong to the child set of A.return, and B must belong to the child + // set of B.return. + a = parentA; + b = parentB; + } else { + // The return pointers point to the same fiber. We'll have to use the + // default, slow path: scan the child sets of each parent alternate to see + // which child belongs to which set. + // + // Search parent A's child set + var didFindChild = false; + var _child = parentA.child; - if (nonIdlePingedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(nonIdlePingedLanes); - } + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentA; + b = parentB; + break; } - } else { - // The only remaining work is Idle. - var unblockedLanes = pendingLanes & ~suspendedLanes; - if (unblockedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(unblockedLanes); - } else { - if (pingedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(pingedLanes); - } + if (_child === b) { + didFindChild = true; + b = parentA; + a = parentB; + break; } + + _child = _child.sibling; } - if (nextLanes === NoLanes) { - // This should only be reachable if we're suspended - // TODO: Consider warning in this path if a fallback timer is not scheduled. - return NoLanes; - } // If we're already in the middle of a render, switching lanes will interrupt - // it and we'll lose our progress. We should only do this if the new lanes are - // higher priority. - - if ( - wipLanes !== NoLanes && - wipLanes !== nextLanes && // If we already suspended with a delay, then interrupting is fine. Don't - // bother waiting until the root is complete. - (wipLanes & suspendedLanes) === NoLanes - ) { - var nextLane = getHighestPriorityLane(nextLanes); - var wipLane = getHighestPriorityLane(wipLanes); - - if ( - // Tests whether the next lane is equal or lower priority than the wip - // one. This works because the bits decrease in priority as you go left. - nextLane >= wipLane || // Default priority updates should not interrupt transition updates. The - // only difference between default updates and transition updates is that - // default updates do not support refresh transitions. - (nextLane === DefaultLane && (wipLane & TransitionLanes) !== NoLanes) - ) { - // Keep working on the existing in-progress tree. Do not interrupt. - return wipLanes; - } - } - - return nextLanes; - } - function getEntangledLanes(root, renderLanes) { - var entangledLanes = renderLanes; - - if ((entangledLanes & InputContinuousLane) !== NoLanes) { - // When updates are sync by default, we entangle continuous priority updates - // and default updates, so they render in the same batch. The only reason - // they use separate lanes is because continuous updates should interrupt - // transitions, but default updates should not. - entangledLanes |= entangledLanes & DefaultLane; - } // Check for entangled lanes and add them to the batch. - // - // A lane is said to be entangled with another when it's not allowed to render - // in a batch that does not also include the other lane. Typically we do this - // when multiple updates have the same source, and we only want to respond to - // the most recent event from that source. - // - // Note that we apply entanglements *after* checking for partial work above. - // This means that if a lane is entangled during an interleaved event while - // it's already rendering, we won't interrupt it. This is intentional, since - // entanglement is usually "best effort": we'll try our best to render the - // lanes in the same batch, but it's not worth throwing out partially - // completed work in order to do it. - // TODO: Reconsider this. The counter-argument is that the partial work - // represents an intermediate state, which we don't want to show to the user. - // And by spending extra time finishing it, we're increasing the amount of - // time it takes to show the final state, which is what they are actually - // waiting for. - // - // For those exceptions where entanglement is semantically important, - // we should ensure that there is no partial work at the - // time we apply the entanglement. + if (!didFindChild) { + // Search parent B's child set + _child = parentB.child; - var allEntangledLanes = root.entangledLanes; + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentB; + b = parentA; + break; + } + + if (_child === b) { + didFindChild = true; + b = parentB; + a = parentA; + break; + } - if (allEntangledLanes !== NoLanes) { - var entanglements = root.entanglements; - var lanes = entangledLanes & allEntangledLanes; + _child = _child.sibling; + } - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - entangledLanes |= entanglements[index]; - lanes &= ~lane; + if (!didFindChild) { + throw new Error('Child was not found in either parent set. This indicates a bug ' + 'in React related to the return pointer. Please file an issue.'); } } + } - return entangledLanes; + if (a.alternate !== b) { + throw new Error("Return fibers should always be each others' alternates. " + 'This error is likely caused by a bug in React. Please file an issue.'); } + } // If the root is not a host container, we're in a disconnected tree. I.e. + // unmounted. - function computeExpirationTime(lane, currentTime) { - switch (lane) { - case SyncHydrationLane: - case SyncLane: - case InputContinuousHydrationLane: - case InputContinuousLane: - // User interactions should expire slightly more quickly. - // - // NOTE: This is set to the corresponding constant as in Scheduler.js. - // When we made it larger, a product metric in www regressed, suggesting - // there's a user interaction that's being starved by a series of - // synchronous updates. If that theory is correct, the proper solution is - // to fix the starvation. However, this scenario supports the idea that - // expiration times are an important safeguard when starvation - // does happen. - return currentTime + syncLaneExpirationMs; - - case DefaultHydrationLane: - case DefaultLane: - case TransitionHydrationLane: - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - return currentTime + transitionLaneExpirationMs; - - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - // TODO: Retries should be allowed to expire if they are CPU bound for - // too long, but when I made this change it caused a spike in browser - // crashes. There must be some other underlying bug; not super urgent but - // ideally should figure out why and fix it. Unfortunately we don't have - // a repro for the crashes, only detected via production metrics. - return NoTimestamp; - - case SelectiveHydrationLane: - case IdleHydrationLane: - case IdleLane: - case OffscreenLane: - case DeferredLane: - // Anything idle priority or lower should never expire. - return NoTimestamp; - - default: - { - error("Should have found matching lanes. This is a bug in React."); - } - return NoTimestamp; - } - } + if (a.tag !== HostRoot) { + throw new Error('Unable to find node on an unmounted component.'); + } - function markStarvedLanesAsExpired(root, currentTime) { - // TODO: This gets called every time we yield. We can optimize by storing - // the earliest expiration time on the root. Then use that to quickly bail out - // of this function. - var pendingLanes = root.pendingLanes; - var suspendedLanes = root.suspendedLanes; - var pingedLanes = root.pingedLanes; - var expirationTimes = root.expirationTimes; // Iterate through the pending lanes and check if we've reached their - // expiration time. If so, we'll assume the update is being starved and mark - // it as expired to force it to finish. - // TODO: We should be able to replace this with upgradePendingLanesToSync - // - // We exclude retry lanes because those must always be time sliced, in order - // to unwrap uncached promises. - // TODO: Write a test for this - - var lanes = pendingLanes & ~RetryLanes; - - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - var expirationTime = expirationTimes[index]; - - if (expirationTime === NoTimestamp) { - // Found a pending lane with no expiration time. If it's not suspended, or - // if it's pinged, assume it's CPU-bound. Compute a new expiration time - // using the current time. - if ( - (lane & suspendedLanes) === NoLanes || - (lane & pingedLanes) !== NoLanes - ) { - // Assumes timestamps are monotonically increasing. - expirationTimes[index] = computeExpirationTime(lane, currentTime); - } - } else if (expirationTime <= currentTime) { - // This lane expired - root.expiredLanes |= lane; - } + if (a.stateNode.current === a) { + // We've determined that A is the current branch. + return fiber; + } // Otherwise B has to be current branch. - lanes &= ~lane; - } - } // This returns the highest priority pending lanes regardless of whether they - function getLanesToRetrySynchronouslyOnError( - root, - originallyAttemptedLanes - ) { - if (root.errorRecoveryDisabledLanes & originallyAttemptedLanes) { - // The error recovery mechanism is disabled until these lanes are cleared. - return NoLanes; - } - var everythingButOffscreen = root.pendingLanes & ~OffscreenLane; + return alternate; +} +function findCurrentHostFiber(parent) { + var currentParent = findCurrentFiberUsingSlowPath(parent); + return currentParent !== null ? findCurrentHostFiberImpl(currentParent) : null; +} - if (everythingButOffscreen !== NoLanes) { - return everythingButOffscreen; - } +function findCurrentHostFiberImpl(node) { + // Next we'll drill down this component to find the first HostComponent/Text. + var tag = node.tag; - if (everythingButOffscreen & OffscreenLane) { - return OffscreenLane; - } + if (tag === HostComponent || tag === HostHoistable || tag === HostSingleton || tag === HostText) { + return node; + } - return NoLanes; - } - function includesSyncLane(lanes) { - return (lanes & (SyncLane | SyncHydrationLane)) !== NoLanes; - } - function includesNonIdleWork(lanes) { - return (lanes & NonIdleLanes) !== NoLanes; - } - function includesOnlyRetries(lanes) { - return (lanes & RetryLanes) === lanes; - } - function includesOnlyNonUrgentLanes(lanes) { - // TODO: Should hydration lanes be included here? This function is only - // used in `updateDeferredValueImpl`. - var UrgentLanes = SyncLane | InputContinuousLane | DefaultLane; - return (lanes & UrgentLanes) === NoLanes; - } - function includesOnlyTransitions(lanes) { - return (lanes & TransitionLanes) === lanes; - } - function includesBlockingLane(root, lanes) { - var SyncDefaultLanes = - InputContinuousHydrationLane | - InputContinuousLane | - DefaultHydrationLane | - DefaultLane; - return (lanes & SyncDefaultLanes) !== NoLanes; - } - function includesExpiredLane(root, lanes) { - // This is a separate check from includesBlockingLane because a lane can - // expire after a render has already started. - return (lanes & root.expiredLanes) !== NoLanes; + var child = node.child; + + while (child !== null) { + var match = findCurrentHostFiberImpl(child); + + if (match !== null) { + return match; } - function isTransitionLane(lane) { - return (lane & TransitionLanes) !== NoLanes; + + child = child.sibling; + } + + return null; +} +function doesFiberContain(parentFiber, childFiber) { + var node = childFiber; + var parentFiberAlternate = parentFiber.alternate; + + while (node !== null) { + if (node === parentFiber || node === parentFiberAlternate) { + return true; } - function claimNextTransitionLane() { - // Cycle through the lanes, assigning each new transition to the next lane. - // In most cases, this means every transition gets its own lane, until we - // run out of lanes and cycle back to the beginning. - var lane = nextTransitionLane; - nextTransitionLane <<= 1; - if ((nextTransitionLane & TransitionLanes) === NoLanes) { - nextTransitionLane = TransitionLane1; - } + node = node.return; + } - return lane; - } - function claimNextRetryLane() { - var lane = nextRetryLane; - nextRetryLane <<= 1; + return false; +} - if ((nextRetryLane & RetryLanes) === NoLanes) { - nextRetryLane = RetryLane1; - } +var valueStack = []; +var fiberStack; - return lane; - } - function getHighestPriorityLane(lanes) { - return lanes & -lanes; - } - function pickArbitraryLane(lanes) { - // This wrapper function gets inlined. Only exists so to communicate that it - // doesn't matter which bit is selected; you can pick any bit without - // affecting the algorithms where its used. Here I'm using - // getHighestPriorityLane because it requires the fewest operations. - return getHighestPriorityLane(lanes); - } +{ + fiberStack = []; +} - function pickArbitraryLaneIndex(lanes) { - return 31 - clz32(lanes); - } +var index = -1; - function laneToIndex(lane) { - return pickArbitraryLaneIndex(lane); - } +function createCursor(defaultValue) { + return { + current: defaultValue + }; +} - function includesSomeLane(a, b) { - return (a & b) !== NoLanes; - } - function isSubsetOfLanes(set, subset) { - return (set & subset) === subset; - } - function mergeLanes(a, b) { - return a | b; - } - function removeLanes(set, subset) { - return set & ~subset; +function pop(cursor, fiber) { + if (index < 0) { + { + error('Unexpected pop.'); } - function intersectLanes(a, b) { - return a & b; - } // Seems redundant, but it changes the type from a single lane (used for - // updates) to a group of lanes (used for flushing work). - function laneToLanes(lane) { - return lane; + return; + } + + { + if (fiber !== fiberStack[index]) { + error('Unexpected Fiber popped.'); } - function createLaneMap(initial) { - // Intentionally pushing one by one. - // https://v8.dev/blog/elements-kinds#avoid-creating-holes - var laneMap = []; + } - for (var i = 0; i < TotalLanes; i++) { - laneMap.push(initial); - } + cursor.current = valueStack[index]; + valueStack[index] = null; - return laneMap; - } - function markRootUpdated$1(root, updateLane) { - root.pendingLanes |= updateLane; // If there are any suspended transitions, it's possible this new update - // could unblock them. Clear the suspended lanes so that we can try rendering - // them again. - // - // TODO: We really only need to unsuspend only lanes that are in the - // `subtreeLanes` of the updated fiber, or the update lanes of the return - // path. This would exclude suspended updates in an unrelated sibling tree, - // since there's no way for this update to unblock it. - // - // We don't do this if the incoming update is idle, because we never process - // idle updates until after all the regular updates have finished; there's no - // way it could unblock a transition. + { + fiberStack[index] = null; + } - if (updateLane !== IdleLane) { - root.suspendedLanes = NoLanes; - root.pingedLanes = NoLanes; - } - } - function markRootSuspended$1(root, suspendedLanes, spawnedLane) { - root.suspendedLanes |= suspendedLanes; - root.pingedLanes &= ~suspendedLanes; // The suspended lanes are no longer CPU-bound. Clear their expiration times. + index--; +} - var expirationTimes = root.expirationTimes; - var lanes = suspendedLanes; +function push(cursor, value, fiber) { + index++; + valueStack[index] = cursor.current; - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - expirationTimes[index] = NoTimestamp; - lanes &= ~lane; - } + { + fiberStack[index] = fiber; + } - if (spawnedLane !== NoLane) { - markSpawnedDeferredLane(root, spawnedLane, suspendedLanes); - } - } - function markRootPinged$1(root, pingedLanes) { - root.pingedLanes |= root.suspendedLanes & pingedLanes; - } - function markRootFinished(root, remainingLanes, spawnedLane) { - var noLongerPendingLanes = root.pendingLanes & ~remainingLanes; - root.pendingLanes = remainingLanes; // Let's try everything again + cursor.current = value; +} - root.suspendedLanes = NoLanes; - root.pingedLanes = NoLanes; - root.expiredLanes &= remainingLanes; - root.entangledLanes &= remainingLanes; - root.errorRecoveryDisabledLanes &= remainingLanes; - root.shellSuspendCounter = 0; - var entanglements = root.entanglements; - var expirationTimes = root.expirationTimes; - var hiddenUpdates = root.hiddenUpdates; // Clear the lanes that no longer have pending work +var warnedAboutMissingGetChildContext; - var lanes = noLongerPendingLanes; +{ + warnedAboutMissingGetChildContext = {}; +} - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - entanglements[index] = NoLanes; - expirationTimes[index] = NoTimestamp; - var hiddenUpdatesForLane = hiddenUpdates[index]; +var emptyContextObject = {}; - if (hiddenUpdatesForLane !== null) { - hiddenUpdates[index] = null; // "Hidden" updates are updates that were made to a hidden component. They - // have special logic associated with them because they may be entangled - // with updates that occur outside that tree. But once the outer tree - // commits, they behave like regular updates. +{ + Object.freeze(emptyContextObject); +} // A cursor to the current merged context object on the stack. - for (var i = 0; i < hiddenUpdatesForLane.length; i++) { - var update = hiddenUpdatesForLane[i]; - if (update !== null) { - update.lane &= ~OffscreenLane; - } - } - } +var contextStackCursor$1 = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed. - lanes &= ~lane; - } +var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack. +// We use this to get access to the parent context after we have already +// pushed the next context provider, and now need to merge their contexts. - if (spawnedLane !== NoLane) { - markSpawnedDeferredLane( - root, - spawnedLane, // This render finished successfully without suspending, so we don't need - // to entangle the spawned task with the parent task. - NoLanes - ); - } +var previousContext = emptyContextObject; + +function getUnmaskedContext(workInProgress, Component, didPushOwnContextIfProvider) { + { + if (didPushOwnContextIfProvider && isContextProvider(Component)) { + // If the fiber is a context provider itself, when we read its context + // we may have already pushed its own child context on the stack. A context + // provider should not "see" its own child context. Therefore we read the + // previous (parent) context instead for a context provider. + return previousContext; } - function markSpawnedDeferredLane(root, spawnedLane, entangledLanes) { - // This render spawned a deferred task. Mark it as pending. - root.pendingLanes |= spawnedLane; - root.suspendedLanes &= ~spawnedLane; // Entangle the spawned lane with the DeferredLane bit so that we know it - // was the result of another render. This lets us avoid a useDeferredValue - // waterfall — only the first level will defer. + return contextStackCursor$1.current; + } +} - var spawnedLaneIndex = laneToIndex(spawnedLane); - root.entangledLanes |= spawnedLane; - root.entanglements[spawnedLaneIndex] |= - DeferredLane | // If the parent render task suspended, we must also entangle those lanes - // with the spawned task, so that the deferred task includes all the same - // updates that the parent task did. We can exclude any lane that is not - // used for updates (e.g. Offscreen). - (entangledLanes & UpdateLanes); - } +function cacheContext(workInProgress, unmaskedContext, maskedContext) { + { + var instance = workInProgress.stateNode; + instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext; + instance.__reactInternalMemoizedMaskedChildContext = maskedContext; + } +} - function markRootEntangled(root, entangledLanes) { - // In addition to entangling each of the given lanes with each other, we also - // have to consider _transitive_ entanglements. For each lane that is already - // entangled with *any* of the given lanes, that lane is now transitively - // entangled with *all* the given lanes. - // - // Translated: If C is entangled with A, then entangling A with B also - // entangles C with B. - // - // If this is hard to grasp, it might help to intentionally break this - // function and look at the tests that fail in ReactTransition-test.js. Try - // commenting out one of the conditions below. - var rootEntangledLanes = (root.entangledLanes |= entangledLanes); - var entanglements = root.entanglements; - var lanes = rootEntangledLanes; +function getMaskedContext(workInProgress, unmaskedContext) { + { + var type = workInProgress.type; + var contextTypes = type.contextTypes; - while (lanes) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; + if (!contextTypes) { + return emptyContextObject; + } // Avoid recreating masked context unless unmasked context has changed. + // Failing to do this will result in unnecessary calls to componentWillReceiveProps. + // This may trigger infinite loops if componentWillReceiveProps calls setState. - if ( - // Is this one of the newly entangled lanes? - (lane & entangledLanes) | // Is this lane transitively entangled with the newly entangled lanes? - (entanglements[index] & entangledLanes) - ) { - entanglements[index] |= entangledLanes; - } - lanes &= ~lane; - } - } - function upgradePendingLaneToSync(root, lane) { - // Since we're upgrading the priority of the given lane, there is now pending - // sync work. - root.pendingLanes |= SyncLane; // Entangle the sync lane with the lane we're upgrading. This means SyncLane - // will not be allowed to finish without also finishing the given lane. + var instance = workInProgress.stateNode; - root.entangledLanes |= SyncLane; - root.entanglements[SyncLaneIndex] |= lane; + if (instance && instance.__reactInternalMemoizedUnmaskedChildContext === unmaskedContext) { + return instance.__reactInternalMemoizedMaskedChildContext; } - function markHiddenUpdate(root, update, lane) { - var index = laneToIndex(lane); - var hiddenUpdates = root.hiddenUpdates; - var hiddenUpdatesForLane = hiddenUpdates[index]; - if (hiddenUpdatesForLane === null) { - hiddenUpdates[index] = [update]; - } else { - hiddenUpdatesForLane.push(update); - } + var context = {}; + + for (var key in contextTypes) { + context[key] = unmaskedContext[key]; + } // Cache unmasked context so we can avoid recreating masked context unless necessary. + // Context is created before the class component is instantiated so check for instance. - update.lane = lane | OffscreenLane; + + if (instance) { + cacheContext(workInProgress, unmaskedContext, context); } - function getBumpedLaneForHydration(root, renderLanes) { - var renderLane = getHighestPriorityLane(renderLanes); - var lane; - if (enableUnifiedSyncLane && (renderLane & SyncUpdateLanes) !== NoLane) { - lane = SyncHydrationLane; - } else { - switch (renderLane) { - case SyncLane: - lane = SyncHydrationLane; - break; + return context; + } +} - case InputContinuousLane: - lane = InputContinuousHydrationLane; - break; +function hasContextChanged() { + { + return didPerformWorkStackCursor.current; + } +} - case DefaultLane: - lane = DefaultHydrationLane; - break; +function isContextProvider(type) { + { + var childContextTypes = type.childContextTypes; + return childContextTypes !== null && childContextTypes !== undefined; + } +} - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - lane = TransitionHydrationLane; - break; +function popContext(fiber) { + { + pop(didPerformWorkStackCursor, fiber); + pop(contextStackCursor$1, fiber); + } +} - case IdleLane: - lane = IdleHydrationLane; - break; +function popTopLevelContextObject(fiber) { + { + pop(didPerformWorkStackCursor, fiber); + pop(contextStackCursor$1, fiber); + } +} - default: - // Everything else is already either a hydration lane, or shouldn't - // be retried at a hydration lane. - lane = NoLane; - break; - } - } // Check if the lane we chose is suspended. If so, that indicates that we - // already attempted and failed to hydrate at that level. Also check if we're - // already rendering that lane, which is rare but could happen. +function pushTopLevelContextObject(fiber, context, didChange) { + { + if (contextStackCursor$1.current !== emptyContextObject) { + throw new Error('Unexpected context found on stack. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } + + push(contextStackCursor$1, context, fiber); + push(didPerformWorkStackCursor, didChange, fiber); + } +} + +function processChildContext(fiber, type, parentContext) { + { + var instance = fiber.stateNode; + var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future. + // It has only been added in Fiber to match the (unintentional) behavior in Stack. + + if (typeof instance.getChildContext !== 'function') { + { + var componentName = getComponentNameFromFiber(fiber) || 'Unknown'; - if ((lane & (root.suspendedLanes | renderLanes)) !== NoLane) { - // Give up trying to hydrate and fall back to client render. - return NoLane; + if (!warnedAboutMissingGetChildContext[componentName]) { + warnedAboutMissingGetChildContext[componentName] = true; + + error('%s.childContextTypes is specified but there is no getChildContext() method ' + 'on the instance. You can either define getChildContext() on %s or remove ' + 'childContextTypes from it.', componentName, componentName); + } } - return lane; + return parentContext; } - function addFiberToLanesMap(root, fiber, lanes) { - if (!isDevToolsPresent) { - return; - } - var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; + var childContext = instance.getChildContext(); - while (lanes > 0) { - var index = laneToIndex(lanes); - var lane = 1 << index; - var updaters = pendingUpdatersLaneMap[index]; - updaters.add(fiber); - lanes &= ~lane; + for (var contextKey in childContext) { + if (!(contextKey in childContextTypes)) { + throw new Error((getComponentNameFromFiber(fiber) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes."); } } - function movePendingFibersToMemoized(root, lanes) { - if (!isDevToolsPresent) { - return; - } - var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; - var memoizedUpdaters = root.memoizedUpdaters; + return assign({}, parentContext, childContext); + } +} - while (lanes > 0) { - var index = laneToIndex(lanes); - var lane = 1 << index; - var updaters = pendingUpdatersLaneMap[index]; +function pushContextProvider(workInProgress) { + { + var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity. + // If the instance does not exist yet, we will push null at first, + // and replace it on the stack later when invalidating the context. - if (updaters.size > 0) { - updaters.forEach(function (fiber) { - var alternate = fiber.alternate; + var memoizedMergedChildContext = instance && instance.__reactInternalMemoizedMergedChildContext || emptyContextObject; // Remember the parent context so we can merge with it later. + // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates. - if (alternate === null || !memoizedUpdaters.has(alternate)) { - memoizedUpdaters.add(fiber); - } - }); - updaters.clear(); - } + previousContext = contextStackCursor$1.current; + push(contextStackCursor$1, memoizedMergedChildContext, workInProgress); + push(didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress); + return true; + } +} - lanes &= ~lane; - } - } - function getTransitionsForLanes(root, lanes) { - { - return null; - } - } +function invalidateContextProvider(workInProgress, type, didChange) { + { + var instance = workInProgress.stateNode; - var NoEventPriority = NoLane; - var DiscreteEventPriority = SyncLane; - var ContinuousEventPriority = InputContinuousLane; - var DefaultEventPriority = DefaultLane; - var IdleEventPriority = IdleLane; - function higherEventPriority(a, b) { - return a !== 0 && a < b ? a : b; - } - function lowerEventPriority(a, b) { - return a === 0 || a > b ? a : b; + if (!instance) { + throw new Error('Expected to have an instance by this point. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function isHigherEventPriority(a, b) { - return a !== 0 && a < b; + + if (didChange) { + // Merge parent and own context. + // Skip this if we're not updating due to sCU. + // This avoids unnecessarily recomputing memoized values. + var mergedContext = processChildContext(workInProgress, type, previousContext); + instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one. + // It is important to unwind the context in the reverse order. + + pop(didPerformWorkStackCursor, workInProgress); + pop(contextStackCursor$1, workInProgress); // Now push the new context and mark that it has changed. + + push(contextStackCursor$1, mergedContext, workInProgress); + push(didPerformWorkStackCursor, didChange, workInProgress); + } else { + pop(didPerformWorkStackCursor, workInProgress); + push(didPerformWorkStackCursor, didChange, workInProgress); } - function eventPriorityToLane(updatePriority) { - return updatePriority; + } +} + +function findCurrentUnmaskedContext(fiber) { + { + // Currently this is only used with renderSubtreeIntoContainer; not sure if it + // makes sense elsewhere + if (!isFiberMounted(fiber) || fiber.tag !== ClassComponent) { + throw new Error('Expected subtree parent to be a mounted class component. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function lanesToEventPriority(lanes) { - var lane = getHighestPriorityLane(lanes); - if (!isHigherEventPriority(DiscreteEventPriority, lane)) { - return DiscreteEventPriority; - } + var node = fiber; - if (!isHigherEventPriority(ContinuousEventPriority, lane)) { - return ContinuousEventPriority; - } + do { + switch (node.tag) { + case HostRoot: + return node.stateNode.context; - if (includesNonIdleWork(lane)) { - return DefaultEventPriority; - } + case ClassComponent: + { + var Component = node.type; - return IdleEventPriority; - } - - // Renderers that don't support mutation - // can re-export everything from this module. - function shim$2() { - throw new Error( - "The current renderer does not support mutation. " + - "This error is likely caused by a bug in React. " + - "Please file an issue." - ); - } // Mutation (when unsupported) - var commitMount = shim$2; - - // Renderers that don't support hydration - // can re-export everything from this module. - function shim$1() { - throw new Error( - "The current renderer does not support hydration. " + - "This error is likely caused by a bug in React. " + - "Please file an issue." - ); - } // Hydration (when unsupported) - - var supportsHydration = false; - var isSuspenseInstancePending = shim$1; - var isSuspenseInstanceFallback = shim$1; - var getSuspenseInstanceFallbackErrorDetails = shim$1; - var registerSuspenseInstanceRetry = shim$1; - - // Renderers that don't support hydration - // can re-export everything from this module. - function shim() { - throw new Error( - "The current renderer does not support Resources. " + - "This error is likely caused by a bug in React. " + - "Please file an issue." - ); - } // Resources (when unsupported) - var suspendResource = shim; - - var _nativeFabricUIManage = nativeFabricUIManager, - createNode = _nativeFabricUIManage.createNode, - cloneNodeWithNewChildren = _nativeFabricUIManage.cloneNodeWithNewChildren, - cloneNodeWithNewChildrenAndProps = - _nativeFabricUIManage.cloneNodeWithNewChildrenAndProps, - cloneNodeWithNewProps = _nativeFabricUIManage.cloneNodeWithNewProps, - createChildNodeSet = _nativeFabricUIManage.createChildSet, - appendChildNode = _nativeFabricUIManage.appendChild, - appendChildNodeToSet = _nativeFabricUIManage.appendChildToSet, - completeRoot = _nativeFabricUIManage.completeRoot, - registerEventHandler = _nativeFabricUIManage.registerEventHandler, - FabricDefaultPriority = - _nativeFabricUIManage.unstable_DefaultEventPriority, - FabricDiscretePriority = - _nativeFabricUIManage.unstable_DiscreteEventPriority, - fabricGetCurrentEventPriority = - _nativeFabricUIManage.unstable_getCurrentEventPriority; - var getViewConfigForType = - ReactNativePrivateInterface.ReactNativeViewConfigRegistry.get; // Counter for uniquely identifying views. - // % 10 === 1 means it is a rootTag. - // % 2 === 0 means it is a Fabric tag. - // This means that they never overlap. - - var nextReactTag = 2; // TODO: Remove this conditional once all changes have propagated. - - if (registerEventHandler) { - /** - * Register the event emitter with the native bridge - */ - registerEventHandler(dispatchEvent); - } - function appendInitialChild(parentInstance, child) { - appendChildNode(parentInstance.node, child.node); - } - function createInstance( - type, - props, - rootContainerInstance, - hostContext, - internalInstanceHandle - ) { - var tag = nextReactTag; - nextReactTag += 2; - var viewConfig = getViewConfigForType(type); + if (isContextProvider(Component)) { + return node.stateNode.__reactInternalMemoizedMergedChildContext; + } - { - for (var key in viewConfig.validAttributes) { - if (props.hasOwnProperty(key)) { - ReactNativePrivateInterface.deepFreezeAndThrowOnMutationInDev( - props[key] - ); + break; } - } - } - - var updatePayload = create(props, viewConfig.validAttributes); - var node = createNode( - tag, // reactTag - viewConfig.uiViewClassName, // viewName - rootContainerInstance, // rootTag - updatePayload, // props - internalInstanceHandle // internalInstanceHandle - ); - var component = ReactNativePrivateInterface.createPublicInstance( - tag, - viewConfig, - internalInstanceHandle - ); - return { - node: node, - canonical: { - nativeTag: tag, - viewConfig: viewConfig, - currentProps: props, - internalInstanceHandle: internalInstanceHandle, - publicInstance: component - } - }; - } - function createTextInstance( - text, - rootContainerInstance, - hostContext, - internalInstanceHandle - ) { - { - if (!hostContext.isInAParentText) { - error("Text strings must be rendered within a component."); - } - } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - var tag = nextReactTag; - nextReactTag += 2; - var node = createNode( - tag, // reactTag - "RCTRawText", // viewName - rootContainerInstance, // rootTag - { - text: text - }, // props - internalInstanceHandle // instance handle - ); - return { - node: node - }; - } - function getRootHostContext(rootContainerInstance) { - return { - isInAParentText: false - }; - } - function getChildHostContext(parentHostContext, type) { - var prevIsInAParentText = parentHostContext.isInAParentText; - var isInAParentText = - type === "AndroidTextInput" || // Android - type === "RCTMultilineTextInputView" || // iOS - type === "RCTSinglelineTextInputView" || // iOS - type === "RCTText" || - type === "RCTVirtualText"; // TODO: If this is an offscreen host container, we should reuse the - // parent context. - - if (prevIsInAParentText !== isInAParentText) { - return { - isInAParentText: isInAParentText - }; - } else { - return parentHostContext; - } - } - function getPublicInstance(instance) { - if ( - instance.canonical != null && - instance.canonical.publicInstance != null - ) { - return instance.canonical.publicInstance; - } // For compatibility with the legacy renderer, in case it's used with Fabric - // in the same app. - // $FlowExpectedError[prop-missing] - if (instance._nativeTag != null) { - // $FlowExpectedError[incompatible-return] - return instance; - } + node = node.return; + } while (node !== null); - return null; - } + throw new Error('Found unexpected detached subtree parent. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - function getPublicTextInstance(textInstance, internalInstanceHandle) { - if (textInstance.publicInstance == null) { - textInstance.publicInstance = - ReactNativePrivateInterface.createPublicTextInstance( - internalInstanceHandle - ); - } +// We use the existence of the state object as an indicator that the component +// is hidden. +var OffscreenVisible = +/* */ +1; +var OffscreenDetached = +/* */ +2; +var OffscreenPassiveEffectsConnected = +/* */ +4; +function isOffscreenManual(offscreenFiber) { + return offscreenFiber.memoizedProps !== null && offscreenFiber.memoizedProps.mode === 'manual'; +} - return textInstance.publicInstance; - } +/** + * inlined Object.is polyfill to avoid requiring consumers ship their own + * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is + */ +function is(x, y) { + return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare + ; +} - function getPublicInstanceFromInternalInstanceHandle( - internalInstanceHandle - ) { - var instance = internalInstanceHandle.stateNode; // React resets all the fields in the fiber when the component is unmounted - // to prevent memory leaks. +var objectIs = // $FlowFixMe[method-unbinding] +typeof Object.is === 'function' ? Object.is : is; - if (instance == null) { - return null; +var prefix; +function describeBuiltInComponentFrame(name) { + if (enableComponentStackLocations) { + if (prefix === undefined) { + // Extract the VM specific prefix used by each line. + try { + throw Error(); + } catch (x) { + var match = x.stack.trim().match(/\n( *(at )?)/); + prefix = match && match[1] || ''; } + } // We use the prefix to ensure our stacks line up with native stack frames. - if (internalInstanceHandle.tag === HostText) { - var textInstance = instance; - return getPublicTextInstance(textInstance, internalInstanceHandle); - } - var elementInstance = internalInstanceHandle.stateNode; - return getPublicInstance(elementInstance); - } - function shouldSetTextContent(type, props) { - // TODO (bvaughn) Revisit this decision. - // Always returning false simplifies the createInstance() implementation, - // But creates an additional child Fiber for raw text children. - // No additional native views are created though. - // It's not clear to me which is better so I'm deferring for now. - // More context @ github.com/facebook/react/pull/8560#discussion_r92111303 - return false; - } - var currentUpdatePriority = NoEventPriority; - function setCurrentUpdatePriority(newPriority) { - currentUpdatePriority = newPriority; - } - function getCurrentUpdatePriority() { - return currentUpdatePriority; - } - function resolveUpdatePriority() { - if (currentUpdatePriority !== NoEventPriority) { - return currentUpdatePriority; - } + return '\n' + prefix + name; + } else { + return describeComponentFrame(name); + } +} +function describeDebugInfoFrame(name, env) { + return describeBuiltInComponentFrame(name + (env ? ' (' + env + ')' : '')); +} +var reentry = false; +var componentFrameCache; - var currentEventPriority = fabricGetCurrentEventPriority - ? fabricGetCurrentEventPriority() - : null; +{ + var PossiblyWeakMap$1 = typeof WeakMap === 'function' ? WeakMap : Map; + componentFrameCache = new PossiblyWeakMap$1(); +} +/** + * Leverages native browser/VM stack frames to get proper details (e.g. + * filename, line + col number) for a single component in a component stack. We + * do this by: + * (1) throwing and catching an error in the function - this will be our + * control error. + * (2) calling the component which will eventually throw an error that we'll + * catch - this will be our sample error. + * (3) diffing the control and sample error stacks to find the stack frame + * which represents our component. + */ - if (currentEventPriority != null) { - switch (currentEventPriority) { - case FabricDiscretePriority: - return DiscreteEventPriority; - case FabricDefaultPriority: - default: - return DefaultEventPriority; - } - } +function describeNativeComponentFrame(fn, construct) { + // If something asked for a stack inside a fake render, it should get ignored. + if (!fn || reentry) { + return ''; + } - return DefaultEventPriority; - } - function shouldAttemptEagerTransition() { - return false; - } // The Fabric renderer is secondary to the existing React Native renderer. - - var warnsIfNotActing = false; - var scheduleTimeout = setTimeout; - var cancelTimeout = clearTimeout; - var noTimeout = -1; // ------------------- - function cloneInstance( - instance, - type, - oldProps, - newProps, - keepChildren, - newChildSet - ) { - var viewConfig = instance.canonical.viewConfig; - var updatePayload = diff(oldProps, newProps, viewConfig.validAttributes); // TODO: If the event handlers have changed, we need to update the current props - // in the commit phase but there is no host config hook to do it yet. - // So instead we hack it by updating it in the render phase. - - instance.canonical.currentProps = newProps; - var node = instance.node; - var clone; - - if (keepChildren) { - if (updatePayload !== null) { - clone = cloneNodeWithNewProps(node, updatePayload); - } else { - // No changes - return instance; - } - } else { - // If passChildrenWhenCloningPersistedNodes is enabled, children will be non-null - if (newChildSet != null) { - if (updatePayload !== null) { - clone = cloneNodeWithNewChildrenAndProps( - node, - newChildSet, - updatePayload - ); - } else { - clone = cloneNodeWithNewChildren(node, newChildSet); - } - } else { - if (updatePayload !== null) { - clone = cloneNodeWithNewChildrenAndProps(node, updatePayload); - } else { - clone = cloneNodeWithNewChildren(node); - } - } - } + { + var frame = componentFrameCache.get(fn); - return { - node: clone, - canonical: instance.canonical - }; - } - function cloneHiddenInstance(instance, type, props) { - var viewConfig = instance.canonical.viewConfig; - var node = instance.node; - var updatePayload = create( - { - style: { - display: "none" - } - }, - viewConfig.validAttributes - ); - return { - node: cloneNodeWithNewProps(node, updatePayload), - canonical: instance.canonical - }; - } - function cloneHiddenTextInstance(instance, text) { - throw new Error("Not yet implemented."); + if (frame !== undefined) { + return frame; } - function createContainerChildSet() { - if (passChildrenWhenCloningPersistedNodes) { - return []; - } else { - return createChildNodeSet(); - } - } - function appendChildToContainerChildSet(childSet, child) { - if (passChildrenWhenCloningPersistedNodes) { - childSet.push(child.node); - } else { - appendChildNodeToSet(childSet, child.node); - } - } - function finalizeContainerChildren(container, newChildren) { - completeRoot(container, newChildren); - } - function replaceContainerChildren(container, newChildren) { - // Noop - children will be replaced in finalizeContainerChildren - } - function preloadInstance(type, props) { - return true; - } - function waitForCommitToBeReady() { - return null; - } - var NotPendingTransition = null; - // Microtasks - // ------------------- + } - var supportsMicrotasks = - typeof RN$enableMicrotasksInReact !== "undefined" && - !!RN$enableMicrotasksInReact; - var scheduleMicrotask = - typeof queueMicrotask === "function" ? queueMicrotask : scheduleTimeout; + reentry = true; + var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. - // This is ok in DOM because they types are interchangeable, but in React Native - // they aren't. + Error.prepareStackTrace = undefined; + var previousDispatcher = null; - function getInstanceFromNode(node) { - var instance = node; // In React Native, node is never a text instance + { + previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function + // for warnings. - if ( - instance.canonical != null && - instance.canonical.internalInstanceHandle != null - ) { - return instance.canonical.internalInstanceHandle; - } // $FlowFixMe[incompatible-return] DevTools incorrectly passes a fiber in React Native. + ReactSharedInternals.H = null; + disableLogs(); + } + /** + * Finding a common stack frame between sample and control errors can be + * tricky given the different types and levels of stack trace truncation from + * different JS VMs. So instead we'll attempt to control what that common + * frame should be through this object method: + * Having both the sample and control errors be in the function under the + * `DescribeNativeComponentFrameRoot` property, + setting the `name` and + * `displayName` properties of the function ensures that a stack + * frame exists that has the method name `DescribeNativeComponentFrameRoot` in + * it for both control and sample stacks. + */ - return node; - } - function getNodeFromInstance(fiber) { - var publicInstance = getPublicInstance(fiber.stateNode); + var RunInRootFrame = { + DetermineComponentFrameRoot: function () { + var control; - if (publicInstance == null) { - throw new Error("Could not find host instance from fiber"); - } + try { + // This should throw. + if (construct) { + // Something should be setting the props in the constructor. + var Fake = function () { + throw Error(); + }; // $FlowFixMe[prop-missing] - return publicInstance; - } - function getFiberCurrentPropsFromNode(instance) { - return instance.canonical.currentProps; - } + Object.defineProperty(Fake.prototype, 'props', { + set: function () { + // We use a throwing setter instead of frozen or non-writable props + // because that won't throw in a non-strict mode function. + throw Error(); + } + }); - var ReactFabricGlobalResponderHandler = { - onChange: function (from, to, blockNativeResponder) { - if (from && from.stateNode) { - // equivalent to clearJSResponder - nativeFabricUIManager.setIsJSResponder( - from.stateNode.node, - false, - blockNativeResponder || false - ); - } + if (typeof Reflect === 'object' && Reflect.construct) { + // We construct a different control for this case to include any extra + // frames added by the construct call. + try { + Reflect.construct(Fake, []); + } catch (x) { + control = x; + } - if (to && to.stateNode) { - // equivalent to setJSResponder - nativeFabricUIManager.setIsJSResponder( - to.stateNode.node, - true, - blockNativeResponder || false - ); - } - } - }; + Reflect.construct(fn, [], Fake); + } else { + try { + Fake.call(); + } catch (x) { + control = x; + } // $FlowFixMe[prop-missing] found when upgrading Flow - setComponentTree( - getFiberCurrentPropsFromNode, - getInstanceFromNode, - getNodeFromInstance - ); - ResponderEventPlugin.injection.injectGlobalResponderHandler( - ReactFabricGlobalResponderHandler - ); - var LegacyRoot = 0; - var ConcurrentRoot = 1; + fn.call(Fake.prototype); + } + } else { + try { + throw Error(); + } catch (x) { + control = x; + } // TODO(luna): This will currently only throw if the function component + // tries to access React/ReactDOM/props. We should probably make this throw + // in simple components too - /** - * `ReactInstanceMap` maintains a mapping from a public facing stateful - * instance (key) and the internal representation (value). This allows public - * methods to accept the user facing instance as an argument and map them back - * to internal methods. - * - * Note that this module is currently shared and assumed to be stateless. - * If this becomes an actual Map, that will break. - */ - function get(key) { - return key._reactInternals; - } - function set(key, value) { - key._reactInternals = value; - } - - // ATTENTION - // When adding new symbols to this file, - // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' - // The Symbol used to tag the ReactElement-like types. - var REACT_ELEMENT_TYPE = Symbol.for("react.element"); - var REACT_PORTAL_TYPE = Symbol.for("react.portal"); - var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); - var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); - var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); - var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); // TODO: Delete with enableRenderableContext - - var REACT_CONSUMER_TYPE = Symbol.for("react.consumer"); - var REACT_CONTEXT_TYPE = Symbol.for("react.context"); - var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); - var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); - var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); - var REACT_MEMO_TYPE = Symbol.for("react.memo"); - var REACT_LAZY_TYPE = Symbol.for("react.lazy"); - var REACT_SCOPE_TYPE = Symbol.for("react.scope"); - var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for("react.debug_trace_mode"); - var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); - var REACT_LEGACY_HIDDEN_TYPE = Symbol.for("react.legacy_hidden"); - var REACT_TRACING_MARKER_TYPE = Symbol.for("react.tracing_marker"); - var REACT_MEMO_CACHE_SENTINEL = Symbol.for("react.memo_cache_sentinel"); - var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; - var FAUX_ITERATOR_SYMBOL = "@@iterator"; - function getIteratorFn(maybeIterable) { - if (maybeIterable === null || typeof maybeIterable !== "object") { - return null; - } - var maybeIterator = - (MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) || - maybeIterable[FAUX_ITERATOR_SYMBOL]; + var maybePromise = fn(); // If the function component returns a promise, it's likely an async + // component, which we don't yet support. Attach a noop catch handler to + // silence the error. + // TODO: Implement component stacks for async client components? - if (typeof maybeIterator === "function") { - return maybeIterator; + if (maybePromise && typeof maybePromise.catch === 'function') { + maybePromise.catch(function () {}); + } + } + } catch (sample) { + // This is inlined manually because closure doesn't do it for us. + if (sample && control && typeof sample.stack === 'string') { + return [sample.stack, control.stack]; + } } - return null; + return [null, null]; } + }; // $FlowFixMe[prop-missing] - function getWrappedName$1(outerType, innerType, wrapperName) { - var displayName = outerType.displayName; + RunInRootFrame.DetermineComponentFrameRoot.displayName = 'DetermineComponentFrameRoot'; + var namePropDescriptor = Object.getOwnPropertyDescriptor(RunInRootFrame.DetermineComponentFrameRoot, 'name'); // Before ES6, the `name` property was not configurable. - if (displayName) { - return displayName; - } + if (namePropDescriptor && namePropDescriptor.configurable) { + // V8 utilizes a function's `name` property when generating a stack trace. + Object.defineProperty(RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor + // is set to `false`. + // $FlowFixMe[cannot-write] + 'name', { + value: 'DetermineComponentFrameRoot' + }); + } + + try { + var _RunInRootFrame$Deter = RunInRootFrame.DetermineComponentFrameRoot(), + sampleStack = _RunInRootFrame$Deter[0], + controlStack = _RunInRootFrame$Deter[1]; + + if (sampleStack && controlStack) { + // This extracts the first frame from the sample that isn't also in the control. + // Skipping one frame that we assume is the frame that calls the two. + var sampleLines = sampleStack.split('\n'); + var controlLines = controlStack.split('\n'); + var s = 0; + var c = 0; + + while (s < sampleLines.length && !sampleLines[s].includes('DetermineComponentFrameRoot')) { + s++; + } + + while (c < controlLines.length && !controlLines[c].includes('DetermineComponentFrameRoot')) { + c++; + } // We couldn't find our intentionally injected common root frame, attempt + // to find another common root frame by search from the bottom of the + // control stack... + + + if (s === sampleLines.length || c === controlLines.length) { + s = sampleLines.length - 1; + c = controlLines.length - 1; + + while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { + // We expect at least one stack frame to be shared. + // Typically this will be the root most one. However, stack frames may be + // cut off due to maximum stack limits. In this case, one maybe cut off + // earlier than the other. We assume that the sample is longer or the same + // and there for cut off earlier. So we should find the root most frame in + // the sample somewhere in the control. + c--; + } + } + + for (; s >= 1 && c >= 0; s--, c--) { + // Next we find the first one that isn't the same which should be the + // frame that called our sample function and the control. + if (sampleLines[s] !== controlLines[c]) { + // In V8, the first line is describing the message but other VMs don't. + // If we're about to return the first line, and the control is also on the same + // line, that's a pretty good indicator that our sample threw at same line as + // the control. I.e. before we entered the sample frame. So we ignore this result. + // This can happen if you passed a class to function component, or non-function. + if (s !== 1 || c !== 1) { + do { + s--; + c--; // We may still have similar intermediate frames from the construct call. + // The next one that isn't the same should be our match though. - var functionName = innerType.displayName || innerType.name || ""; - return functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName; - } // Keep in sync with react-reconciler/getComponentNameFromFiber + if (c < 0 || sampleLines[s] !== controlLines[c]) { + // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. + var _frame = '\n' + sampleLines[s].replace(' at new ', ' at '); // If our component frame is labeled "" + // but we have a user-provided "displayName" + // splice it in to make the stack more readable. - function getContextName$1(type) { - return type.displayName || "Context"; - } - var REACT_CLIENT_REFERENCE = Symbol.for("react.client.reference"); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. + if (fn.displayName && _frame.includes('')) { + _frame = _frame.replace('', fn.displayName); + } - function getComponentNameFromType(type) { - if (type == null) { - // Host root, text node or just invalid type. - return null; - } + if (true) { + if (typeof fn === 'function') { + componentFrameCache.set(fn, _frame); + } + } // Return the line we found. - if (typeof type === "function") { - if (type.$$typeof === REACT_CLIENT_REFERENCE) { - // TODO: Create a convention for naming client references with debug info. - return null; - } - return type.displayName || type.name || null; - } + return _frame; + } + } while (s >= 1 && c >= 0); + } - if (typeof type === "string") { - return type; + break; + } } + } + } finally { + reentry = false; + + { + ReactSharedInternals.H = previousDispatcher; + reenableLogs(); + } - switch (type) { - case REACT_FRAGMENT_TYPE: - return "Fragment"; + Error.prepareStackTrace = previousPrepareStackTrace; + } // Fallback to just using the name if we couldn't make it throw. - case REACT_PORTAL_TYPE: - return "Portal"; - case REACT_PROFILER_TYPE: - return "Profiler"; + var name = fn ? fn.displayName || fn.name : ''; + var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ''; - case REACT_STRICT_MODE_TYPE: - return "StrictMode"; + { + if (typeof fn === 'function') { + componentFrameCache.set(fn, syntheticFrame); + } + } - case REACT_SUSPENSE_TYPE: - return "Suspense"; + return syntheticFrame; +} - case REACT_SUSPENSE_LIST_TYPE: - return "SuspenseList"; - } +function describeComponentFrame(name) { + return '\n in ' + (name || 'Unknown'); +} - if (typeof type === "object") { - { - if (typeof type.tag === "number") { - error( - "Received an unexpected object in getComponentNameFromType(). " + - "This is likely a bug in React. Please file an issue." - ); - } - } +function describeClassComponentFrame(ctor) { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(ctor, true); + } else { + return describeFunctionComponentFrame(ctor); + } +} +function describeFunctionComponentFrame(fn) { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(fn, false); + } else { + if (!fn) { + return ''; + } + + var name = fn.displayName || fn.name || null; + return describeComponentFrame(name); + } +} + +function describeFiber(fiber) { + switch (fiber.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + return describeBuiltInComponentFrame(fiber.type); - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: - if (enableRenderableContext) { - return null; - } else { - var provider = type; - return getContextName$1(provider._context) + ".Provider"; - } + case LazyComponent: + return describeBuiltInComponentFrame('Lazy'); - case REACT_CONTEXT_TYPE: - var context = type; + case SuspenseComponent: + return describeBuiltInComponentFrame('Suspense'); - if (enableRenderableContext) { - return getContextName$1(context) + ".Provider"; - } else { - return getContextName$1(context) + ".Consumer"; - } + case SuspenseListComponent: + return describeBuiltInComponentFrame('SuspenseList'); - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - var consumer = type; - return getContextName$1(consumer._context) + ".Consumer"; - } else { - return null; - } + case FunctionComponent: + case SimpleMemoComponent: + return describeFunctionComponentFrame(fiber.type); - case REACT_FORWARD_REF_TYPE: - return getWrappedName$1(type, type.render, "ForwardRef"); + case ForwardRef: + return describeFunctionComponentFrame(fiber.type.render); - case REACT_MEMO_TYPE: - var outerName = type.displayName || null; + case ClassComponent: + return describeClassComponentFrame(fiber.type); - if (outerName !== null) { - return outerName; - } + default: + return ''; + } +} - return getComponentNameFromType(type.type) || "Memo"; +function getStackByFiberInDevAndProd(workInProgress) { + try { + var info = ''; + var node = workInProgress; - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; + do { + info += describeFiber(node); - try { - return getComponentNameFromType(init(payload)); - } catch (x) { - return null; + if (true) { + // Add any Server Component stack frames in reverse order. + var debugInfo = node._debugInfo; + + if (debugInfo) { + for (var i = debugInfo.length - 1; i >= 0; i--) { + var entry = debugInfo[i]; + + if (typeof entry.name === 'string') { + info += describeDebugInfoFrame(entry.name, entry.env); } } } - } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - return null; - } - function getWrappedName(outerType, innerType, wrapperName) { - var functionName = innerType.displayName || innerType.name || ""; - return ( - outerType.displayName || - (functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName) - ); - } // Keep in sync with shared/getComponentNameFromType + node = node.return; + } while (node); - function getContextName(type) { - return type.displayName || "Context"; - } + return info; + } catch (x) { + return '\nError generating stack: ' + x.message + '\n' + x.stack; + } +} - function getComponentNameFromOwner(owner) { - if (typeof owner.tag === "number") { - return getComponentNameFromFiber(owner); - } +var CapturedStacks = new WeakMap(); +function createCapturedValueAtFiber(value, source) { + // If the value is an error, call this function immediately after it is thrown + // so the stack is accurate. + var stack; + + if (typeof value === 'object' && value !== null) { + var capturedStack = CapturedStacks.get(value); + + if (typeof capturedStack === 'string') { + stack = capturedStack; + } else { + stack = getStackByFiberInDevAndProd(source); + CapturedStacks.set(value, stack); + } + } else { + stack = getStackByFiberInDevAndProd(source); + } + + return { + value: value, + source: source, + stack: stack + }; +} +function createCapturedValueFromError(value, stack) { + if (typeof stack === 'string') { + CapturedStacks.set(value, stack); + } + + return { + value: value, + source: null, + stack: stack + }; +} - if (typeof owner.name === "string") { - return owner.name; - } +var contextStackCursor = createCursor(null); +var contextFiberStackCursor = createCursor(null); +var rootInstanceStackCursor = createCursor(null); // Represents the nearest host transition provider (in React DOM, a ) +// NOTE: Since forms cannot be nested, and this feature is only implemented by +// React DOM, we don't technically need this to be a stack. It could be a single +// module variable instead. + +var hostTransitionProviderCursor = createCursor(null); // TODO: This should initialize to NotPendingTransition, a constant +// imported from the fiber config. However, because of a cycle in the module +// graph, that value isn't defined during this module's initialization. I can't +// think of a way to work around this without moving that value out of the +// fiber config. For now, the "no provider" case is handled when reading, +// inside useHostTransitionStatus. + +var HostTransitionContext = { + $$typeof: REACT_CONTEXT_TYPE, + Provider: null, + Consumer: null, + _currentValue: null, + _currentValue2: null, + _threadCount: 0 +}; + +function requiredContext(c) { + { + if (c === null) { + error('Expected host context to exist. This error is likely caused by a bug ' + 'in React. Please file an issue.'); + } + } + + return c; +} - return null; - } - function getComponentNameFromFiber(fiber) { - var tag = fiber.tag, - type = fiber.type; +function getRootHostContainer() { + var rootInstance = requiredContext(rootInstanceStackCursor.current); + return rootInstance; +} - switch (tag) { - case CacheComponent: - return "Cache"; +function pushHostContainer(fiber, nextRootInstance) { + // Push current root instance onto the stack; + // This allows us to reset root when portals are popped. + push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it. + // This enables us to pop only Fibers that provide unique contexts. - case ContextConsumer: - if (enableRenderableContext) { - var consumer = type; - return getContextName(consumer._context) + ".Consumer"; - } else { - var context = type; - return getContextName(context) + ".Consumer"; - } + push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack. + // However, we can't just call getRootHostContext() and push it because + // we'd have a different number of entries on the stack depending on + // whether getRootHostContext() throws somewhere in renderer code or not. + // So we push an empty value first. This lets us safely unwind on errors. - case ContextProvider: - if (enableRenderableContext) { - var _context = type; - return getContextName(_context) + ".Provider"; - } else { - var provider = type; - return getContextName(provider._context) + ".Provider"; - } + push(contextStackCursor, null, fiber); + var nextRootContext = getRootHostContext(); // Now that we know this function doesn't throw, replace it. - case DehydratedFragment: - return "DehydratedFragment"; + pop(contextStackCursor, fiber); + push(contextStackCursor, nextRootContext, fiber); +} - case ForwardRef: - return getWrappedName(type, type.render, "ForwardRef"); +function popHostContainer(fiber) { + pop(contextStackCursor, fiber); + pop(contextFiberStackCursor, fiber); + pop(rootInstanceStackCursor, fiber); +} - case Fragment: - return "Fragment"; +function getHostContext() { + var context = requiredContext(contextStackCursor.current); + return context; +} - case HostHoistable: - case HostSingleton: - case HostComponent: - // Host component type is the display name (e.g. "div", "View") - return type; +function pushHostContext(fiber) { + if (enableAsyncActions) { + var stateHook = fiber.memoizedState; - case HostPortal: - return "Portal"; + if (stateHook !== null) { + // Only provide context if this fiber has been upgraded by a host + // transition. We use the same optimization for regular host context below. + push(hostTransitionProviderCursor, fiber, fiber); + } + } - case HostRoot: - return "Root"; + var context = requiredContext(contextStackCursor.current); + var nextContext = getChildHostContext(context, fiber.type); // Don't push this Fiber's context unless it's unique. - case HostText: - return "Text"; + if (context !== nextContext) { + // Track the context and the Fiber that provided it. + // This enables us to pop only Fibers that provide unique contexts. + push(contextFiberStackCursor, fiber, fiber); + push(contextStackCursor, nextContext, fiber); + } +} - case LazyComponent: - // Name comes from the type in this case; we don't have a tag. - return getComponentNameFromType(type); +function popHostContext(fiber) { + if (contextFiberStackCursor.current === fiber) { + // Do not pop unless this Fiber provided the current context. + // pushHostContext() only pushes Fibers that provide unique contexts. + pop(contextStackCursor, fiber); + pop(contextFiberStackCursor, fiber); + } - case Mode: - if (type === REACT_STRICT_MODE_TYPE) { - // Don't be less specific than shared/getComponentNameFromType - return "StrictMode"; - } + if (enableAsyncActions) { + if (hostTransitionProviderCursor.current === fiber) { + // Do not pop unless this Fiber provided the current context. This is mostly + // a performance optimization, but conveniently it also prevents a potential + // data race where a host provider is upgraded (i.e. memoizedState becomes + // non-null) during a concurrent event. This is a bit of a flaw in the way + // we upgrade host components, but because we're accounting for it here, it + // should be fine. + pop(hostTransitionProviderCursor, fiber); // When popping the transition provider, we reset the context value back + // to `null`. We can do this because you're not allowd to nest forms. If + // we allowed for multiple nested host transition providers, then we'd + // need to reset this to the parent provider's status. - return "Mode"; + { + HostTransitionContext._currentValue2 = null; + } + } + } +} - case OffscreenComponent: - return "Offscreen"; +var maxRowLength = 120; +var idealDepth = 15; - case Profiler: - return "Profiler"; +function findNotableNode(node, indent) { + if (node.serverProps === undefined && node.serverTail.length === 0 && node.children.length === 1 && node.distanceFromLeaf > 3 && node.distanceFromLeaf > idealDepth - indent) { + // This is not an interesting node for contextual purposes so we can skip it. + var child = node.children[0]; + return findNotableNode(child, indent); + } - case ScopeComponent: - return "Scope"; + return node; +} - case SuspenseComponent: - return "Suspense"; +function indentation(indent) { + return ' ' + ' '.repeat(indent); +} - case SuspenseListComponent: - return "SuspenseList"; +function added(indent) { + return '+ ' + ' '.repeat(indent); +} - case TracingMarkerComponent: - return "TracingMarker"; - // The display name for these tags come from the user-provided type: +function removed(indent) { + return '- ' + ' '.repeat(indent); +} - case IncompleteClassComponent: - case IncompleteFunctionComponent: +function describeFiberType(fiber) { + switch (fiber.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + return fiber.type; - // Fallthrough + case LazyComponent: + return 'Lazy'; - case ClassComponent: - case FunctionComponent: - case MemoComponent: - case SimpleMemoComponent: - if (typeof type === "function") { - return type.displayName || type.name || null; - } + case SuspenseComponent: + return 'Suspense'; - if (typeof type === "string") { - return type; - } + case SuspenseListComponent: + return 'SuspenseList'; - break; - } + case FunctionComponent: + case SimpleMemoComponent: + var fn = fiber.type; + return fn.displayName || fn.name || null; - return null; - } + case ForwardRef: + var render = fiber.type.render; + return render.displayName || render.name || null; - function getNearestMountedFiber(fiber) { - var node = fiber; - var nearestMounted = fiber; + case ClassComponent: + var ctr = fiber.type; + return ctr.displayName || ctr.name || null; - if (!fiber.alternate) { - // If there is no alternate, this might be a new tree that isn't inserted - // yet. If it is, then it will have a pending insertion effect on it. - var nextNode = node; + default: + // Skip + return null; + } +} - do { - node = nextNode; +var needsEscaping = /["'&<>\n\t]/; - if ((node.flags & (Placement | Hydrating)) !== NoFlags$1) { - // This is an insertion or in-progress hydration. The nearest possible - // mounted fiber is the parent but we need to continue to figure out - // if that one is still mounted. - nearestMounted = node.return; - } // $FlowFixMe[incompatible-type] we bail out when we get a null +function describeTextNode(content, maxLength) { + if (needsEscaping.test(content)) { + var encoded = JSON.stringify(content); - nextNode = node.return; - } while (nextNode); - } else { - while (node.return) { - node = node.return; - } + if (encoded.length > maxLength - 2) { + if (maxLength < 8) { + return '{"..."}'; } - if (node.tag === HostRoot) { - // TODO: Check if this was a nested HostRoot when used with - // renderContainerIntoSubtree. - return nearestMounted; - } // If we didn't hit the root, that means that we're in an disconnected tree - // that has been unmounted. - - return null; - } - function isFiberMounted(fiber) { - return getNearestMountedFiber(fiber) === fiber; + return '{' + encoded.slice(0, maxLength - 7) + '..."}'; } - function isMounted(component) { - { - var owner = ReactSharedInternals.owner; - - if (owner !== null && owner.tag === ClassComponent) { - var ownerFiber = owner; - var instance = ownerFiber.stateNode; - - if (!instance._warnedAboutRefsInRender) { - error( - "%s is accessing isMounted inside its render() function. " + - "render() should be a pure function of props and state. It should " + - "never access something that requires stale data from the previous " + - "render, such as refs. Move this logic to componentDidMount and " + - "componentDidUpdate instead.", - getComponentNameFromFiber(ownerFiber) || "A component" - ); - } - instance._warnedAboutRefsInRender = true; - } + return '{' + encoded + '}'; + } else { + if (content.length > maxLength) { + if (maxLength < 5) { + return '{"..."}'; } - var fiber = get(component); + return content.slice(0, maxLength - 3) + '...'; + } - if (!fiber) { - return false; - } + return content; + } +} - return getNearestMountedFiber(fiber) === fiber; - } +function describeTextDiff(clientText, serverProps, indent) { + var maxLength = maxRowLength - indent * 2; + + if (serverProps === null) { + return added(indent) + describeTextNode(clientText, maxLength) + '\n'; + } else if (typeof serverProps === 'string') { + var serverText = serverProps; + var firstDiff = 0; - function assertIsMounted(fiber) { - if (getNearestMountedFiber(fiber) !== fiber) { - throw new Error("Unable to find node on an unmounted component."); + for (; firstDiff < serverText.length && firstDiff < clientText.length; firstDiff++) { + if (serverText.charCodeAt(firstDiff) !== clientText.charCodeAt(firstDiff)) { + break; } } - function findCurrentFiberUsingSlowPath(fiber) { - var alternate = fiber.alternate; + if (firstDiff > maxLength - 8 && firstDiff > 10) { + // The first difference between the two strings would be cut off, so cut off in + // the beginning instead. + clientText = '...' + clientText.slice(firstDiff - 8); + serverText = '...' + serverText.slice(firstDiff - 8); + } - if (!alternate) { - // If there is no alternate, then we only need to check if it is mounted. - var nearestMounted = getNearestMountedFiber(fiber); + return added(indent) + describeTextNode(clientText, maxLength) + '\n' + removed(indent) + describeTextNode(serverText, maxLength) + '\n'; + } else { + return indentation(indent) + describeTextNode(clientText, maxLength) + '\n'; + } +} - if (nearestMounted === null) { - throw new Error("Unable to find node on an unmounted component."); - } +function objectName(object) { + // $FlowFixMe[method-unbinding] + var name = Object.prototype.toString.call(object); + return name.replace(/^\[object (.*)\]$/, function (m, p0) { + return p0; + }); +} - if (nearestMounted !== fiber) { - return null; - } +function describeValue(value, maxLength) { + switch (typeof value) { + case 'string': + { + var encoded = JSON.stringify(value); - return fiber; - } // If we have two possible branches, we'll walk backwards up to the root - // to see what path the root points to. On the way we may hit one of the - // special cases and we'll deal with them. + if (encoded.length > maxLength) { + if (maxLength < 5) { + return '"..."'; + } - var a = fiber; - var b = alternate; + return encoded.slice(0, maxLength - 4) + '..."'; + } - while (true) { - var parentA = a.return; + return encoded; + } - if (parentA === null) { - // We're at the root. - break; + case 'object': + { + if (value === null) { + return 'null'; } - var parentB = parentA.alternate; + if (isArray(value)) { + return '[...]'; + } - if (parentB === null) { - // There is no alternate. This is an unusual case. Currently, it only - // happens when a Suspense component is hidden. An extra fragment fiber - // is inserted in between the Suspense fiber and its children. Skip - // over this extra fragment fiber and proceed to the next parent. - var nextParent = parentA.return; + if (value.$$typeof === REACT_ELEMENT_TYPE) { + var type = getComponentNameFromType(value.type); + return type ? '<' + type + '>' : '<...>'; + } - if (nextParent !== null) { - a = b = nextParent; - continue; - } // If there's no parent, we're at the root. + var name = objectName(value); - break; - } // If both copies of the parent fiber point to the same child, we can - // assume that the child is current. This happens when we bailout on low - // priority: the bailed out fiber's child reuses the current child. - - if (parentA.child === parentB.child) { - var child = parentA.child; - - while (child) { - if (child === a) { - // We've determined that A is the current branch. - assertIsMounted(parentA); - return fiber; - } + if (name === 'Object') { + var properties = ''; + maxLength -= 2; - if (child === b) { - // We've determined that B is the current branch. - assertIsMounted(parentA); - return alternate; + for (var propName in value) { + if (!value.hasOwnProperty(propName)) { + continue; } - child = child.sibling; - } // We should never have an alternate for any mounting node. So the only - // way this could possibly happen is if this was unmounted, if at all. - - throw new Error("Unable to find node on an unmounted component."); - } - - if (a.return !== b.return) { - // The return pointer of A and the return pointer of B point to different - // fibers. We assume that return pointers never criss-cross, so A must - // belong to the child set of A.return, and B must belong to the child - // set of B.return. - a = parentA; - b = parentB; - } else { - // The return pointers point to the same fiber. We'll have to use the - // default, slow path: scan the child sets of each parent alternate to see - // which child belongs to which set. - // - // Search parent A's child set - var didFindChild = false; - var _child = parentA.child; - - while (_child) { - if (_child === a) { - didFindChild = true; - a = parentA; - b = parentB; - break; - } + var jsonPropName = JSON.stringify(propName); - if (_child === b) { - didFindChild = true; - b = parentA; - a = parentB; - break; + if (jsonPropName !== '"' + propName + '"') { + propName = jsonPropName; } - _child = _child.sibling; - } - - if (!didFindChild) { - // Search parent B's child set - _child = parentB.child; - - while (_child) { - if (_child === a) { - didFindChild = true; - a = parentB; - b = parentA; - break; - } - - if (_child === b) { - didFindChild = true; - b = parentB; - a = parentA; - break; - } + maxLength -= propName.length - 2; + var propValue = describeValue(value[propName], maxLength < 15 ? maxLength : 15); + maxLength -= propValue.length; - _child = _child.sibling; + if (maxLength < 0) { + properties += properties === '' ? '...' : ', ...'; + break; } - if (!didFindChild) { - throw new Error( - "Child was not found in either parent set. This indicates a bug " + - "in React related to the return pointer. Please file an issue." - ); - } + properties += (properties === '' ? '' : ',') + propName + ':' + propValue; } - } - if (a.alternate !== b) { - throw new Error( - "Return fibers should always be each others' alternates. " + - "This error is likely caused by a bug in React. Please file an issue." - ); + return '{' + properties + '}'; } - } // If the root is not a host container, we're in a disconnected tree. I.e. - // unmounted. - if (a.tag !== HostRoot) { - throw new Error("Unable to find node on an unmounted component."); + return name; } - if (a.stateNode.current === a) { - // We've determined that A is the current branch. - return fiber; - } // Otherwise B has to be current branch. - - return alternate; - } - function findCurrentHostFiber(parent) { - var currentParent = findCurrentFiberUsingSlowPath(parent); - return currentParent !== null - ? findCurrentHostFiberImpl(currentParent) - : null; - } - - function findCurrentHostFiberImpl(node) { - // Next we'll drill down this component to find the first HostComponent/Text. - var tag = node.tag; + case 'function': + { + var _name = value.displayName || value.name; - if ( - tag === HostComponent || - tag === HostHoistable || - tag === HostSingleton || - tag === HostText - ) { - return node; + return _name ? 'function ' + _name : 'function'; } - var child = node.child; - - while (child !== null) { - var match = findCurrentHostFiberImpl(child); - - if (match !== null) { - return match; - } + default: + // eslint-disable-next-line react-internal/safe-string-coercion + return String(value); + } +} - child = child.sibling; +function describePropValue(value, maxLength) { + if (typeof value === 'string' && !needsEscaping.test(value)) { + if (value.length > maxLength - 2) { + if (maxLength < 5) { + return '"..."'; } - return null; + return '"' + value.slice(0, maxLength - 5) + '..."'; } - function doesFiberContain(parentFiber, childFiber) { - var node = childFiber; - var parentFiberAlternate = parentFiber.alternate; - while (node !== null) { - if (node === parentFiber || node === parentFiberAlternate) { - return true; - } + return '"' + value + '"'; + } - node = node.return; - } + return '{' + describeValue(value, maxLength - 2) + '}'; +} - return false; - } +function describeCollapsedElement(type, props, indent) { + // This function tries to fit the props into a single line for non-essential elements. + // We also ignore children because we're not going deeper. + var maxLength = maxRowLength - indent * 2 - type.length - 2; + var content = ''; - var valueStack = []; - var fiberStack; + for (var propName in props) { + if (!props.hasOwnProperty(propName)) { + continue; + } - { - fiberStack = []; + if (propName === 'children') { + // Ignored. + continue; } - var index = -1; + var propValue = describePropValue(props[propName], 15); + maxLength -= propName.length + propValue.length + 2; - function createCursor(defaultValue) { - return { - current: defaultValue - }; + if (maxLength < 0) { + content += ' ...'; + break; } - function pop(cursor, fiber) { - if (index < 0) { - { - error("Unexpected pop."); - } + content += ' ' + propName + '=' + propValue; + } - return; - } + return indentation(indent) + '<' + type + content + '>\n'; +} - { - if (fiber !== fiberStack[index]) { - error("Unexpected Fiber popped."); - } - } +function describeExpandedElement(type, props, rowPrefix) { + // This function tries to fit the props into a single line for non-essential elements. + // We also ignore children because we're not going deeper. + var remainingRowLength = maxRowLength - rowPrefix.length - type.length; // We add the properties to a set so we can choose later whether we'll put it on one + // line or multiple lines. - cursor.current = valueStack[index]; - valueStack[index] = null; + var properties = []; - { - fiberStack[index] = null; - } + for (var propName in props) { + if (!props.hasOwnProperty(propName)) { + continue; + } - index--; + if (propName === 'children') { + // Ignored. + continue; } - function push(cursor, value, fiber) { - index++; - valueStack[index] = cursor.current; + var maxLength = maxRowLength - rowPrefix.length - propName.length - 1; + var propValue = describePropValue(props[propName], maxLength); + remainingRowLength -= propName.length + propValue.length + 2; + properties.push(propName + '=' + propValue); + } - { - fiberStack[index] = fiber; - } + if (properties.length === 0) { + return rowPrefix + '<' + type + '>\n'; + } else if (remainingRowLength > 0) { + // We can fit all on one row. + return rowPrefix + '<' + type + ' ' + properties.join(' ') + '>\n'; + } else { + // Split into one row per property: + return rowPrefix + '<' + type + '\n' + rowPrefix + ' ' + properties.join('\n' + rowPrefix + ' ') + '\n' + rowPrefix + '>\n'; + } +} + +function describePropertiesDiff(clientObject, serverObject, indent) { + var properties = ''; + var remainingServerProperties = assign({}, serverObject); - cursor.current = value; + for (var propName in clientObject) { + if (!clientObject.hasOwnProperty(propName)) { + continue; } - var warnedAboutMissingGetChildContext; + delete remainingServerProperties[propName]; + var maxLength = maxRowLength - indent * 2 - propName.length - 2; + var clientValue = clientObject[propName]; + var clientPropValue = describeValue(clientValue, maxLength); - { - warnedAboutMissingGetChildContext = {}; + if (serverObject.hasOwnProperty(propName)) { + var serverValue = serverObject[propName]; + var serverPropValue = describeValue(serverValue, maxLength); + properties += added(indent) + propName + ': ' + clientPropValue + '\n'; + properties += removed(indent) + propName + ': ' + serverPropValue + '\n'; + } else { + properties += added(indent) + propName + ': ' + clientPropValue + '\n'; } + } - var emptyContextObject = {}; + for (var _propName in remainingServerProperties) { + if (!remainingServerProperties.hasOwnProperty(_propName)) { + continue; + } - { - Object.freeze(emptyContextObject); - } // A cursor to the current merged context object on the stack. + var _maxLength = maxRowLength - indent * 2 - _propName.length - 2; - var contextStackCursor$1 = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed. + var _serverValue = remainingServerProperties[_propName]; - var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack. - // We use this to get access to the parent context after we have already - // pushed the next context provider, and now need to merge their contexts. + var _serverPropValue = describeValue(_serverValue, _maxLength); - var previousContext = emptyContextObject; + properties += removed(indent) + _propName + ': ' + _serverPropValue + '\n'; + } - function getUnmaskedContext( - workInProgress, - Component, - didPushOwnContextIfProvider - ) { - { - if (didPushOwnContextIfProvider && isContextProvider(Component)) { - // If the fiber is a context provider itself, when we read its context - // we may have already pushed its own child context on the stack. A context - // provider should not "see" its own child context. Therefore we read the - // previous (parent) context instead for a context provider. - return previousContext; - } + return properties; +} - return contextStackCursor$1.current; - } - } +function describeElementDiff(type, clientProps, serverProps, indent) { + var content = ''; // Maps any previously unmatched lower case server prop name to its full prop name - function cacheContext(workInProgress, unmaskedContext, maskedContext) { - { - var instance = workInProgress.stateNode; - instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext; - instance.__reactInternalMemoizedMaskedChildContext = maskedContext; - } + var serverPropNames = new Map(); + + for (var propName in serverProps) { + if (!serverProps.hasOwnProperty(propName)) { + continue; } - function getMaskedContext(workInProgress, unmaskedContext) { - { - var type = workInProgress.type; - var contextTypes = type.contextTypes; + serverPropNames.set(propName.toLowerCase(), propName); + } - if (!contextTypes) { - return emptyContextObject; - } // Avoid recreating masked context unless unmasked context has changed. - // Failing to do this will result in unnecessary calls to componentWillReceiveProps. - // This may trigger infinite loops if componentWillReceiveProps calls setState. + if (serverPropNames.size === 1 && serverPropNames.has('children')) { + content += describeExpandedElement(type, clientProps, indentation(indent)); + } else { + for (var _propName2 in clientProps) { + if (!clientProps.hasOwnProperty(_propName2)) { + continue; + } - var instance = workInProgress.stateNode; + if (_propName2 === 'children') { + // Handled below. + continue; + } - if ( - instance && - instance.__reactInternalMemoizedUnmaskedChildContext === - unmaskedContext - ) { - return instance.__reactInternalMemoizedMaskedChildContext; - } + var maxLength = maxRowLength - (indent + 1) * 2 - _propName2.length - 1; + var serverPropName = serverPropNames.get(_propName2.toLowerCase()); - var context = {}; + if (serverPropName !== undefined) { + serverPropNames.delete(_propName2.toLowerCase()); // There's a diff here. - for (var key in contextTypes) { - context[key] = unmaskedContext[key]; - } // Cache unmasked context so we can avoid recreating masked context unless necessary. - // Context is created before the class component is instantiated so check for instance. + var clientValue = clientProps[_propName2]; + var serverValue = serverProps[serverPropName]; + var clientPropValue = describePropValue(clientValue, maxLength); + var serverPropValue = describePropValue(serverValue, maxLength); - if (instance) { - cacheContext(workInProgress, unmaskedContext, context); + if (typeof clientValue === 'object' && clientValue !== null && typeof serverValue === 'object' && serverValue !== null && objectName(clientValue) === 'Object' && objectName(serverValue) === 'Object' && ( // Only do the diff if the object has a lot of keys or was shortened. + Object.keys(clientValue).length > 2 || Object.keys(serverValue).length > 2 || clientPropValue.indexOf('...') > -1 || serverPropValue.indexOf('...') > -1)) { + // We're comparing two plain objects. We can diff the nested objects instead. + content += indentation(indent + 1) + _propName2 + '={{\n' + describePropertiesDiff(clientValue, serverValue, indent + 2) + indentation(indent + 1) + '}}\n'; + } else { + content += added(indent + 1) + _propName2 + '=' + clientPropValue + '\n'; + content += removed(indent + 1) + _propName2 + '=' + serverPropValue + '\n'; } - - return context; + } else { + // Considered equal. + content += indentation(indent + 1) + _propName2 + '=' + describePropValue(clientProps[_propName2], maxLength) + '\n'; } } - function hasContextChanged() { - { - return didPerformWorkStackCursor.current; + serverPropNames.forEach(function (propName) { + if (propName === 'children') { + // Handled below. + return; } - } - function isContextProvider(type) { - { - var childContextTypes = type.childContextTypes; - return childContextTypes !== null && childContextTypes !== undefined; - } - } + var maxLength = maxRowLength - (indent + 1) * 2 - propName.length - 1; + content += removed(indent + 1) + propName + '=' + describePropValue(serverProps[propName], maxLength) + '\n'; + }); - function popContext(fiber) { - { - pop(didPerformWorkStackCursor, fiber); - pop(contextStackCursor$1, fiber); - } + if (content === '') { + // No properties + content = indentation(indent) + '<' + type + '>\n'; + } else { + // Had properties + content = indentation(indent) + '<' + type + '\n' + content + indentation(indent) + '>\n'; } + } - function popTopLevelContextObject(fiber) { - { - pop(didPerformWorkStackCursor, fiber); - pop(contextStackCursor$1, fiber); - } - } + var serverChildren = serverProps.children; + var clientChildren = clientProps.children; - function pushTopLevelContextObject(fiber, context, didChange) { - { - if (contextStackCursor$1.current !== emptyContextObject) { - throw new Error( - "Unexpected context found on stack. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } + if (typeof serverChildren === 'string' || typeof serverChildren === 'number' || typeof serverChildren === 'bigint') { + // There's a diff of the children. + // $FlowFixMe[unsafe-addition] + var serverText = '' + serverChildren; + var clientText = ''; - push(contextStackCursor$1, context, fiber); - push(didPerformWorkStackCursor, didChange, fiber); - } + if (typeof clientChildren === 'string' || typeof clientChildren === 'number' || typeof clientChildren === 'bigint') { + // $FlowFixMe[unsafe-addition] + clientText = '' + clientChildren; } - function processChildContext(fiber, type, parentContext) { - { - var instance = fiber.stateNode; - var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future. - // It has only been added in Fiber to match the (unintentional) behavior in Stack. - - if (typeof instance.getChildContext !== "function") { - { - var componentName = getComponentNameFromFiber(fiber) || "Unknown"; - - if (!warnedAboutMissingGetChildContext[componentName]) { - warnedAboutMissingGetChildContext[componentName] = true; - - error( - "%s.childContextTypes is specified but there is no getChildContext() method " + - "on the instance. You can either define getChildContext() on %s or remove " + - "childContextTypes from it.", - componentName, - componentName - ); - } - } - - return parentContext; - } - - var childContext = instance.getChildContext(); - - for (var contextKey in childContext) { - if (!(contextKey in childContextTypes)) { - throw new Error( - (getComponentNameFromFiber(fiber) || "Unknown") + - '.getChildContext(): key "' + - contextKey + - '" is not defined in childContextTypes.' - ); - } - } + content += describeTextDiff(clientText, serverText, indent + 1); + } else if (typeof clientChildren === 'string' || typeof clientChildren === 'number' || typeof clientChildren === 'bigint') { + // The client has children but it's not considered a difference from the server. + // $FlowFixMe[unsafe-addition] + content += describeTextDiff('' + clientChildren, undefined, indent + 1); + } - return assign({}, parentContext, childContext); - } - } + return content; +} - function pushContextProvider(workInProgress) { - { - var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity. - // If the instance does not exist yet, we will push null at first, - // and replace it on the stack later when invalidating the context. - - var memoizedMergedChildContext = - (instance && instance.__reactInternalMemoizedMergedChildContext) || - emptyContextObject; // Remember the parent context so we can merge with it later. - // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates. - - previousContext = contextStackCursor$1.current; - push(contextStackCursor$1, memoizedMergedChildContext, workInProgress); - push( - didPerformWorkStackCursor, - didPerformWorkStackCursor.current, - workInProgress - ); - return true; - } - } +function describeSiblingFiber(fiber, indent) { + var type = describeFiberType(fiber); - function invalidateContextProvider(workInProgress, type, didChange) { - { - var instance = workInProgress.stateNode; + if (type === null) { + // Skip this type of fiber. We currently treat this as a fragment + // so it's just part of the parent's children. + var flatContent = ''; + var childFiber = fiber.child; - if (!instance) { - throw new Error( - "Expected to have an instance by this point. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - - if (didChange) { - // Merge parent and own context. - // Skip this if we're not updating due to sCU. - // This avoids unnecessarily recomputing memoized values. - var mergedContext = processChildContext( - workInProgress, - type, - previousContext - ); - instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one. - // It is important to unwind the context in the reverse order. - - pop(didPerformWorkStackCursor, workInProgress); - pop(contextStackCursor$1, workInProgress); // Now push the new context and mark that it has changed. - - push(contextStackCursor$1, mergedContext, workInProgress); - push(didPerformWorkStackCursor, didChange, workInProgress); - } else { - pop(didPerformWorkStackCursor, workInProgress); - push(didPerformWorkStackCursor, didChange, workInProgress); - } - } + while (childFiber) { + flatContent += describeSiblingFiber(childFiber, indent); + childFiber = childFiber.sibling; } - function findCurrentUnmaskedContext(fiber) { - { - // Currently this is only used with renderSubtreeIntoContainer; not sure if it - // makes sense elsewhere - if (!isFiberMounted(fiber) || fiber.tag !== ClassComponent) { - throw new Error( - "Expected subtree parent to be a mounted class component. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } + return flatContent; + } - var node = fiber; + return indentation(indent) + '<' + type + '>' + '\n'; +} - do { - switch (node.tag) { - case HostRoot: - return node.stateNode.context; +function describeNode(node, indent) { + var skipToNode = findNotableNode(node, indent); - case ClassComponent: { - var Component = node.type; + if (skipToNode !== node && (node.children.length !== 1 || node.children[0] !== skipToNode)) { + return indentation(indent) + '...\n' + describeNode(skipToNode, indent + 1); + } // Prefix with any server components for context - if (isContextProvider(Component)) { - return node.stateNode.__reactInternalMemoizedMergedChildContext; - } - break; - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null + var parentContent = ''; + var debugInfo = node.fiber._debugInfo; - node = node.return; - } while (node !== null); + if (debugInfo) { + for (var i = 0; i < debugInfo.length; i++) { + var serverComponentName = debugInfo[i].name; - throw new Error( - "Found unexpected detached subtree parent. " + - "This error is likely caused by a bug in React. Please file an issue." - ); + if (typeof serverComponentName === 'string') { + parentContent += indentation(indent) + '<' + serverComponentName + '>' + '\n'; + indent++; } } + } // Self - // We use the existence of the state object as an indicator that the component - // is hidden. - var OffscreenVisible = - /* */ - 1; - var OffscreenDetached = - /* */ - 2; - var OffscreenPassiveEffectsConnected = - /* */ - 4; - function isOffscreenManual(offscreenFiber) { - return ( - offscreenFiber.memoizedProps !== null && - offscreenFiber.memoizedProps.mode === "manual" - ); - } - /** - * inlined Object.is polyfill to avoid requiring consumers ship their own - * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is - */ - function is(x, y) { - return ( - (x === y && (x !== 0 || 1 / x === 1 / y)) || (x !== x && y !== y) // eslint-disable-line no-self-compare - ); - } + var selfContent = ''; // We use the pending props since we might be generating a diff before the complete phase + // when something throws. - var objectIs = typeof Object.is === "function" ? Object.is : is; // $FlowFixMe[method-unbinding] + var clientProps = node.fiber.pendingProps; - var prefix; - function describeBuiltInComponentFrame(name) { - if (enableComponentStackLocations) { - if (prefix === undefined) { - // Extract the VM specific prefix used by each line. - try { - throw Error(); - } catch (x) { - var match = x.stack.trim().match(/\n( *(at )?)/); - prefix = (match && match[1]) || ""; - } - } // We use the prefix to ensure our stacks line up with native stack frames. + if (node.fiber.tag === HostText) { + // Text Node + selfContent = describeTextDiff(clientProps, node.serverProps, indent); + } else { + var type = describeFiberType(node.fiber); - return "\n" + prefix + name; + if (type !== null) { + // Element Node + if (node.serverProps === undefined) { + // Just a reference node for context. + selfContent = describeCollapsedElement(type, clientProps, indent); + indent++; + } else if (node.serverProps === null) { + selfContent = describeExpandedElement(type, clientProps, added(indent)); // If this was an insertion we won't step down further. Any tail + // are considered siblings so we don't indent. + // TODO: Model this a little better. + } else if (typeof node.serverProps === 'string') { + { + error('Should not have matched a non HostText fiber to a Text node. This is a bug in React.'); + } } else { - return describeComponentFrame(name); + selfContent = describeElementDiff(type, clientProps, node.serverProps, indent); + indent++; } } - function describeDebugInfoFrame(name, env) { - return describeBuiltInComponentFrame( - name + (env ? " (" + env + ")" : "") - ); - } - var reentry = false; - var componentFrameCache; - - { - var PossiblyWeakMap$1 = typeof WeakMap === "function" ? WeakMap : Map; - componentFrameCache = new PossiblyWeakMap$1(); - } - /** - * Leverages native browser/VM stack frames to get proper details (e.g. - * filename, line + col number) for a single component in a component stack. We - * do this by: - * (1) throwing and catching an error in the function - this will be our - * control error. - * (2) calling the component which will eventually throw an error that we'll - * catch - this will be our sample error. - * (3) diffing the control and sample error stacks to find the stack frame - * which represents our component. - */ + } // Compute children - function describeNativeComponentFrame(fn, construct) { - // If something asked for a stack inside a fake render, it should get ignored. - if (!fn || reentry) { - return ""; - } - { - var frame = componentFrameCache.get(fn); + var childContent = ''; + var childFiber = node.fiber.child; + var diffIdx = 0; - if (frame !== undefined) { - return frame; - } - } + while (childFiber && diffIdx < node.children.length) { + var childNode = node.children[diffIdx]; - reentry = true; - var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. + if (childNode.fiber === childFiber) { + // This was a match in the diff. + childContent += describeNode(childNode, indent); + diffIdx++; + } else { + // This is an unrelated previous sibling. + childContent += describeSiblingFiber(childFiber, indent); + } - Error.prepareStackTrace = undefined; - var previousDispatcher = null; + childFiber = childFiber.sibling; + } - { - previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function - // for warnings. - - ReactSharedInternals.H = null; - disableLogs(); - } - /** - * Finding a common stack frame between sample and control errors can be - * tricky given the different types and levels of stack trace truncation from - * different JS VMs. So instead we'll attempt to control what that common - * frame should be through this object method: - * Having both the sample and control errors be in the function under the - * `DescribeNativeComponentFrameRoot` property, + setting the `name` and - * `displayName` properties of the function ensures that a stack - * frame exists that has the method name `DescribeNativeComponentFrameRoot` in - * it for both control and sample stacks. - */ - - var RunInRootFrame = { - DetermineComponentFrameRoot: function () { - var control; + if (childFiber && node.children.length > 0) { + // If we had any further siblings after the last mismatch, we can't be sure if it's + // actually a valid match since it might not have found a match. So we exclude next + // siblings to avoid confusion. + childContent += indentation(indent) + '...' + '\n'; + } // Deleted tail nodes - try { - // This should throw. - if (construct) { - // Something should be setting the props in the constructor. - var Fake = function () { - throw Error(); - }; // $FlowFixMe[prop-missing] - - Object.defineProperty(Fake.prototype, "props", { - set: function () { - // We use a throwing setter instead of frozen or non-writable props - // because that won't throw in a non-strict mode function. - throw Error(); - } - }); - - if (typeof Reflect === "object" && Reflect.construct) { - // We construct a different control for this case to include any extra - // frames added by the construct call. - try { - Reflect.construct(Fake, []); - } catch (x) { - control = x; - } - Reflect.construct(fn, [], Fake); - } else { - try { - Fake.call(); - } catch (x) { - control = x; - } // $FlowFixMe[prop-missing] found when upgrading Flow + var serverTail = node.serverTail; - fn.call(Fake.prototype); - } - } else { - try { - throw Error(); - } catch (x) { - control = x; - } // TODO(luna): This will currently only throw if the function component - // tries to access React/ReactDOM/props. We should probably make this throw - // in simple components too - - var maybePromise = fn(); // If the function component returns a promise, it's likely an async - // component, which we don't yet support. Attach a noop catch handler to - // silence the error. - // TODO: Implement component stacks for async client components? - - if (maybePromise && typeof maybePromise.catch === "function") { - maybePromise.catch(function () {}); - } - } - } catch (sample) { - // This is inlined manually because closure doesn't do it for us. - if (sample && control && typeof sample.stack === "string") { - return [sample.stack, control.stack]; - } - } + for (var _i = 0; _i < serverTail.length; _i++) { + var tailNode = serverTail[_i]; - return [null, null]; - } - }; // $FlowFixMe[prop-missing] + if (typeof tailNode === 'string') { + // Removed text node + childContent += removed(indent) + describeTextNode(tailNode, maxRowLength - indent * 2) + '\n'; + } else { + // Removed element + childContent += describeExpandedElement(tailNode.type, tailNode.props, removed(indent)); + } + } - RunInRootFrame.DetermineComponentFrameRoot.displayName = - "DetermineComponentFrameRoot"; - var namePropDescriptor = Object.getOwnPropertyDescriptor( - RunInRootFrame.DetermineComponentFrameRoot, - "name" - ); // Before ES6, the `name` property was not configurable. + return parentContent + selfContent + childContent; +} - if (namePropDescriptor && namePropDescriptor.configurable) { - // V8 utilizes a function's `name` property when generating a stack trace. - Object.defineProperty( - RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor - // is set to `false`. - // $FlowFixMe[cannot-write] - "name", - { - value: "DetermineComponentFrameRoot" - } - ); - } +function describeDiff(rootNode) { + try { + return '\n\n' + describeNode(rootNode, 0); + } catch (x) { + return ''; + } +} - try { - var _RunInRootFrame$Deter = - RunInRootFrame.DetermineComponentFrameRoot(), - sampleStack = _RunInRootFrame$Deter[0], - controlStack = _RunInRootFrame$Deter[1]; - - if (sampleStack && controlStack) { - // This extracts the first frame from the sample that isn't also in the control. - // Skipping one frame that we assume is the frame that calls the two. - var sampleLines = sampleStack.split("\n"); - var controlLines = controlStack.split("\n"); - var s = 0; - var c = 0; - - while ( - s < sampleLines.length && - !sampleLines[s].includes("DetermineComponentFrameRoot") - ) { - s++; - } +var isHydrating = false; // This flag allows for warning supression when we expect there to be mismatches - while ( - c < controlLines.length && - !controlLines[c].includes("DetermineComponentFrameRoot") - ) { - c++; - } // We couldn't find our intentionally injected common root frame, attempt - // to find another common root frame by search from the bottom of the - // control stack... - - if (s === sampleLines.length || c === controlLines.length) { - s = sampleLines.length - 1; - c = controlLines.length - 1; - - while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { - // We expect at least one stack frame to be shared. - // Typically this will be the root most one. However, stack frames may be - // cut off due to maximum stack limits. In this case, one maybe cut off - // earlier than the other. We assume that the sample is longer or the same - // and there for cut off earlier. So we should find the root most frame in - // the sample somewhere in the control. - c--; - } - } +var hydrationDiffRootDEV = null; // Hydration errors that were thrown inside this boundary - for (; s >= 1 && c >= 0; s--, c--) { - // Next we find the first one that isn't the same which should be the - // frame that called our sample function and the control. - if (sampleLines[s] !== controlLines[c]) { - // In V8, the first line is describing the message but other VMs don't. - // If we're about to return the first line, and the control is also on the same - // line, that's a pretty good indicator that our sample threw at same line as - // the control. I.e. before we entered the sample frame. So we ignore this result. - // This can happen if you passed a class to function component, or non-function. - if (s !== 1 || c !== 1) { - do { - s--; - c--; // We may still have similar intermediate frames from the construct call. - // The next one that isn't the same should be our match though. - - if (c < 0 || sampleLines[s] !== controlLines[c]) { - // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. - var _frame = - "\n" + sampleLines[s].replace(" at new ", " at "); // If our component frame is labeled "" - // but we have a user-provided "displayName" - // splice it in to make the stack more readable. - - if (fn.displayName && _frame.includes("")) { - _frame = _frame.replace("", fn.displayName); - } +var hydrationErrors = null; - if (true) { - if (typeof fn === "function") { - componentFrameCache.set(fn, _frame); - } - } // Return the line we found. +function prepareToHydrateHostInstance(fiber, hostContext) { + { + throw new Error('Expected prepareToHydrateHostInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - return _frame; - } - } while (s >= 1 && c >= 0); - } +function prepareToHydrateHostTextInstance(fiber) { + { + throw new Error('Expected prepareToHydrateHostTextInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - break; - } - } - } - } finally { - reentry = false; +function prepareToHydrateHostSuspenseInstance(fiber) { + { + throw new Error('Expected prepareToHydrateHostSuspenseInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - { - ReactSharedInternals.H = previousDispatcher; - reenableLogs(); - } +function popHydrationState(fiber) { + { + return false; + } +} - Error.prepareStackTrace = previousPrepareStackTrace; - } // Fallback to just using the name if we couldn't make it throw. +function upgradeHydrationErrorsToRecoverable() { + if (hydrationErrors !== null) { + // Successfully completed a forced client render. The errors that occurred + // during the hydration attempt are now recovered. We will log them in + // commit phase, once the entire tree has finished. + queueRecoverableErrors(hydrationErrors); + hydrationErrors = null; + } +} - var name = fn ? fn.displayName || fn.name : ""; - var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ""; +function getIsHydrating() { + return isHydrating; +} - { - if (typeof fn === "function") { - componentFrameCache.set(fn, syntheticFrame); - } - } +function queueHydrationError(error) { + if (hydrationErrors === null) { + hydrationErrors = [error]; + } else { + hydrationErrors.push(error); + } +} +function emitPendingHydrationWarnings() { + { + // If we haven't yet thrown any hydration errors by the time we reach the end we've successfully + // hydrated, however, we might still have DEV-only mismatches that we log now. + var diffRoot = hydrationDiffRootDEV; - return syntheticFrame; - } + if (diffRoot !== null) { + hydrationDiffRootDEV = null; + var diff = describeDiff(diffRoot); - function describeComponentFrame(name) { - return "\n in " + (name || "Unknown"); + error("A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. This won't be patched up. " + 'This can happen if a SSR-ed Client Component used:\n' + '\n' + "- A server/client branch `if (typeof window !== 'undefined')`.\n" + "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + "- Date formatting in a user's locale which doesn't match the server.\n" + '- External changing data without sending a snapshot of it along with the HTML.\n' + '- Invalid HTML tag nesting.\n' + '\n' + 'It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n' + '\n' + '%s%s', 'https://react.dev/link/hydration-mismatch', diff); } + } +} + +// we wait until the current render is over (either finished or interrupted) +// before adding it to the fiber/hook queue. Push to this array so we can +// access the queue, fiber, update, et al later. + +var concurrentQueues = []; +var concurrentQueuesIndex = 0; +var concurrentlyUpdatedLanes = NoLanes; +function finishQueueingConcurrentUpdates() { + var endIndex = concurrentQueuesIndex; + concurrentQueuesIndex = 0; + concurrentlyUpdatedLanes = NoLanes; + var i = 0; + + while (i < endIndex) { + var fiber = concurrentQueues[i]; + concurrentQueues[i++] = null; + var queue = concurrentQueues[i]; + concurrentQueues[i++] = null; + var update = concurrentQueues[i]; + concurrentQueues[i++] = null; + var lane = concurrentQueues[i]; + concurrentQueues[i++] = null; + + if (queue !== null && update !== null) { + var pending = queue.pending; - function describeClassComponentFrame(ctor) { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(ctor, true); + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; } else { - return describeFunctionComponentFrame(ctor); + update.next = pending.next; + pending.next = update; } + + queue.pending = update; } - function describeFunctionComponentFrame(fn) { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(fn, false); - } else { - if (!fn) { - return ""; - } - var name = fn.displayName || fn.name || null; - return describeComponentFrame(name); - } + if (lane !== NoLane) { + markUpdateLaneFromFiberToRoot(fiber, update, lane); } + } +} +function getConcurrentlyUpdatedLanes() { + return concurrentlyUpdatedLanes; +} - function describeFiber(fiber) { - switch (fiber.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - return describeBuiltInComponentFrame(fiber.type); +function enqueueUpdate$1(fiber, queue, update, lane) { + // Don't update the `childLanes` on the return path yet. If we already in + // the middle of rendering, wait until after it has completed. + concurrentQueues[concurrentQueuesIndex++] = fiber; + concurrentQueues[concurrentQueuesIndex++] = queue; + concurrentQueues[concurrentQueuesIndex++] = update; + concurrentQueues[concurrentQueuesIndex++] = lane; + concurrentlyUpdatedLanes = mergeLanes(concurrentlyUpdatedLanes, lane); // The fiber's `lane` field is used in some places to check if any work is + // scheduled, to perform an eager bailout, so we need to update it immediately. + // TODO: We should probably move this to the "shared" queue instead. + + fiber.lanes = mergeLanes(fiber.lanes, lane); + var alternate = fiber.alternate; + + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, lane); + } +} - case LazyComponent: - return describeBuiltInComponentFrame("Lazy"); +function enqueueConcurrentHookUpdate(fiber, queue, update, lane) { + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); + return getRootForUpdatedFiber(fiber); +} +function enqueueConcurrentHookUpdateAndEagerlyBailout(fiber, queue, update) { + // This function is used to queue an update that doesn't need a rerender. The + // only reason we queue it is in case there's a subsequent higher priority + // update that causes it to be rebased. + var lane = NoLane; + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); // Usually we can rely on the upcoming render phase to process the concurrent + // queue. However, since this is a bail out, we're not scheduling any work + // here. So the update we just queued will leak until something else happens + // to schedule work (if ever). + // + // Check if we're currently in the middle of rendering a tree, and if not, + // process the queue immediately to prevent a leak. + + var isConcurrentlyRendering = getWorkInProgressRoot() !== null; + + if (!isConcurrentlyRendering) { + finishQueueingConcurrentUpdates(); + } +} +function enqueueConcurrentClassUpdate(fiber, queue, update, lane) { + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); + return getRootForUpdatedFiber(fiber); +} +function enqueueConcurrentRenderForLane(fiber, lane) { + enqueueUpdate$1(fiber, null, null, lane); + return getRootForUpdatedFiber(fiber); +} // Calling this function outside this module should only be done for backwards +// compatibility and should always be accompanied by a warning. + +function unsafe_markUpdateLaneFromFiberToRoot(sourceFiber, lane) { + // NOTE: For Hyrum's Law reasons, if an infinite update loop is detected, it + // should throw before `markUpdateLaneFromFiberToRoot` is called. But this is + // undefined behavior and we can change it if we need to; it just so happens + // that, at the time of this writing, there's an internal product test that + // happens to rely on this. + var root = getRootForUpdatedFiber(sourceFiber); + markUpdateLaneFromFiberToRoot(sourceFiber, null, lane); + return root; +} - case SuspenseComponent: - return describeBuiltInComponentFrame("Suspense"); +function markUpdateLaneFromFiberToRoot(sourceFiber, update, lane) { + // Update the source fiber's lanes + sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane); + var alternate = sourceFiber.alternate; - case SuspenseListComponent: - return describeBuiltInComponentFrame("SuspenseList"); + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, lane); + } // Walk the parent path to the root and update the child lanes. - case FunctionComponent: - case SimpleMemoComponent: - return describeFunctionComponentFrame(fiber.type); - case ForwardRef: - return describeFunctionComponentFrame(fiber.type.render); + var isHidden = false; + var parent = sourceFiber.return; + var node = sourceFiber; - case ClassComponent: - return describeClassComponentFrame(fiber.type); + while (parent !== null) { + parent.childLanes = mergeLanes(parent.childLanes, lane); + alternate = parent.alternate; - default: - return ""; - } + if (alternate !== null) { + alternate.childLanes = mergeLanes(alternate.childLanes, lane); } - function getStackByFiberInDevAndProd(workInProgress) { - try { - var info = ""; - var node = workInProgress; + if (parent.tag === OffscreenComponent) { + // Check if this offscreen boundary is currently hidden. + // + // The instance may be null if the Offscreen parent was unmounted. Usually + // the parent wouldn't be reachable in that case because we disconnect + // fibers from the tree when they are deleted. However, there's a weird + // edge case where setState is called on a fiber that was interrupted + // before it ever mounted. Because it never mounts, it also never gets + // deleted. Because it never gets deleted, its return pointer never gets + // disconnected. Which means it may be attached to a deleted Offscreen + // parent node. (This discovery suggests it may be better for memory usage + // if we don't attach the `return` pointer until the commit phase, though + // in order to do that we'd need some other way to track the return + // pointer during the initial render, like on the stack.) + // + // This case is always accompanied by a warning, but we still need to + // account for it. (There may be other cases that we haven't discovered, + // too.) + var offscreenInstance = parent.stateNode; - do { - info += describeFiber(node); + if (offscreenInstance !== null && !(offscreenInstance._visibility & OffscreenVisible)) { + isHidden = true; + } + } - if (true) { - // Add any Server Component stack frames in reverse order. - var debugInfo = node._debugInfo; + node = parent; + parent = parent.return; + } - if (debugInfo) { - for (var i = debugInfo.length - 1; i >= 0; i--) { - var entry = debugInfo[i]; + if (isHidden && update !== null && node.tag === HostRoot) { + var root = node.stateNode; + markHiddenUpdate(root, update, lane); + } +} - if (typeof entry.name === "string") { - info += describeDebugInfoFrame(entry.name, entry.env); - } - } - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null +function getRootForUpdatedFiber(sourceFiber) { + // TODO: We will detect and infinite update loop and throw even if this fiber + // has already unmounted. This isn't really necessary but it happens to be the + // current behavior we've used for several release cycles. Consider not + // performing this check if the updated fiber already unmounted, since it's + // not possible for that to cause an infinite update loop. + throwIfInfiniteUpdateLoopDetected(); // When a setState happens, we must ensure the root is scheduled. Because + // update queues do not have a backpointer to the root, the only way to do + // this currently is to walk up the return path. This used to not be a big + // deal because we would have to walk up the return path to set + // the `childLanes`, anyway, but now those two traversals happen at + // different times. + // TODO: Consider adding a `root` backpointer on the update queue. + + detectUpdateOnUnmountedFiber(sourceFiber, sourceFiber); + var node = sourceFiber; + var parent = node.return; + + while (parent !== null) { + detectUpdateOnUnmountedFiber(sourceFiber, node); + node = parent; + parent = node.return; + } + + return node.tag === HostRoot ? node.stateNode : null; +} - node = node.return; - } while (node); +function detectUpdateOnUnmountedFiber(sourceFiber, parent) { + { + var alternate = parent.alternate; - return info; - } catch (x) { - return "\nError generating stack: " + x.message + "\n" + x.stack; - } + if (alternate === null && (parent.flags & (Placement | Hydrating)) !== NoFlags$1) { + warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); } + } +} - var CapturedStacks = new WeakMap(); - function createCapturedValueAtFiber(value, source) { - // If the value is an error, call this function immediately after it is thrown - // so the stack is accurate. - var stack; +// there's only a single root, but we do support multi root apps, hence this +// extra complexity. But this module is optimized for the single root case. + +var firstScheduledRoot = null; +var lastScheduledRoot = null; // Used to prevent redundant mircotasks from being scheduled. + +var didScheduleMicrotask = false; // `act` "microtasks" are scheduled on the `act` queue instead of an actual +// microtask, so we have to dedupe those separately. This wouldn't be an issue +// if we required all `act` calls to be awaited, which we might in the future. + +var didScheduleMicrotask_act = false; // Used to quickly bail out of flushSync if there's no sync work to do. + +var mightHavePendingSyncWork = false; +var isFlushingWork = false; +var currentEventTransitionLane = NoLane; +function ensureRootIsScheduled(root) { + // This function is called whenever a root receives an update. It does two + // things 1) it ensures the root is in the root schedule, and 2) it ensures + // there's a pending microtask to process the root schedule. + // + // Most of the actual scheduling logic does not happen until + // `scheduleTaskForRootDuringMicrotask` runs. + // Add the root to the schedule + if (root === lastScheduledRoot || root.next !== null) ; else { + if (lastScheduledRoot === null) { + firstScheduledRoot = lastScheduledRoot = root; + } else { + lastScheduledRoot.next = root; + lastScheduledRoot = root; + } + } // Any time a root received an update, we set this to true until the next time + // we process the schedule. If it's false, then we can quickly exit flushSync + // without consulting the schedule. + + + mightHavePendingSyncWork = true; // At the end of the current event, go through each of the roots and ensure + // there's a task scheduled for each one at the correct priority. + + if (ReactSharedInternals.actQueue !== null) { + // We're inside an `act` scope. + if (!didScheduleMicrotask_act) { + didScheduleMicrotask_act = true; + scheduleImmediateTask(processRootScheduleInMicrotask); + } + } else { + if (!didScheduleMicrotask) { + didScheduleMicrotask = true; + scheduleImmediateTask(processRootScheduleInMicrotask); + } + } + + if (!enableDeferRootSchedulingToMicrotask) { + // While this flag is disabled, we schedule the render task immediately + // instead of waiting a microtask. + // TODO: We need to land enableDeferRootSchedulingToMicrotask ASAP to + // unblock additional features we have planned. + scheduleTaskForRootDuringMicrotask(root, now$1()); + } + + if (ReactSharedInternals.isBatchingLegacy && root.tag === LegacyRoot) { + // Special `act` case: Record whenever a legacy update is scheduled. + ReactSharedInternals.didScheduleLegacyUpdate = true; + } +} +function flushSyncWorkOnAllRoots() { + // This is allowed to be called synchronously, but the caller should check + // the execution context first. + flushSyncWorkAcrossRoots_impl(false); +} +function flushSyncWorkOnLegacyRootsOnly() { + // This is allowed to be called synchronously, but the caller should check + // the execution context first. + { + flushSyncWorkAcrossRoots_impl(true); + } +} - if (typeof value === "object" && value !== null) { - var capturedStack = CapturedStacks.get(value); +function flushSyncWorkAcrossRoots_impl(onlyLegacy) { + if (isFlushingWork) { + // Prevent reentrancy. + // TODO: Is this overly defensive? The callers must check the execution + // context first regardless. + return; + } - if (typeof capturedStack === "string") { - stack = capturedStack; - } else { - stack = getStackByFiberInDevAndProd(source); - CapturedStacks.set(value, stack); - } - } else { - stack = getStackByFiberInDevAndProd(source); - } + if (!mightHavePendingSyncWork) { + // Fast path. There's no sync work to do. + return; + } // There may or may not be synchronous work scheduled. Let's check. - return { - value: value, - source: source, - stack: stack - }; - } - function createCapturedValueFromError(value, stack) { - if (typeof stack === "string") { - CapturedStacks.set(value, stack); - } - return { - value: value, - source: null, - stack: stack - }; - } + var didPerformSomeWork; + isFlushingWork = true; - var contextStackCursor = createCursor(null); - var contextFiberStackCursor = createCursor(null); - var rootInstanceStackCursor = createCursor(null); // Represents the nearest host transition provider (in React DOM, a ) - // NOTE: Since forms cannot be nested, and this feature is only implemented by - // React DOM, we don't technically need this to be a stack. It could be a single - // module variable instead. - - var hostTransitionProviderCursor = createCursor(null); // TODO: This should initialize to NotPendingTransition, a constant - // imported from the fiber config. However, because of a cycle in the module - // graph, that value isn't defined during this module's initialization. I can't - // think of a way to work around this without moving that value out of the - // fiber config. For now, the "no provider" case is handled when reading, - // inside useHostTransitionStatus. - - var HostTransitionContext = { - $$typeof: REACT_CONTEXT_TYPE, - Provider: null, - Consumer: null, - _currentValue: null, - _currentValue2: null, - _threadCount: 0 - }; + do { + didPerformSomeWork = false; + var root = firstScheduledRoot; - function requiredContext(c) { - { - if (c === null) { - error( - "Expected host context to exist. This error is likely caused by a bug " + - "in React. Please file an issue." - ); + while (root !== null) { + if (onlyLegacy && (root.tag !== LegacyRoot)) ; else { + var workInProgressRoot = getWorkInProgressRoot(); + var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); + var nextLanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); + + if (includesSyncLane(nextLanes)) { + // This root has pending sync work. Flush it now. + didPerformSomeWork = true; + performSyncWorkOnRoot(root, nextLanes); } } - return c; + root = root.next; } + } while (didPerformSomeWork); - function getRootHostContainer() { - var rootInstance = requiredContext(rootInstanceStackCursor.current); - return rootInstance; - } + isFlushingWork = false; +} - function pushHostContainer(fiber, nextRootInstance) { - // Push current root instance onto the stack; - // This allows us to reset root when portals are popped. - push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it. - // This enables us to pop only Fibers that provide unique contexts. +function processRootScheduleInMicrotask() { + // This function is always called inside a microtask. It should never be + // called synchronously. + didScheduleMicrotask = false; - push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack. - // However, we can't just call getRootHostContext() and push it because - // we'd have a different number of entries on the stack depending on - // whether getRootHostContext() throws somewhere in renderer code or not. - // So we push an empty value first. This lets us safely unwind on errors. + { + didScheduleMicrotask_act = false; + } // We'll recompute this as we iterate through all the roots and schedule them. - push(contextStackCursor, null, fiber); - var nextRootContext = getRootHostContext(); // Now that we know this function doesn't throw, replace it. - pop(contextStackCursor, fiber); - push(contextStackCursor, nextRootContext, fiber); - } + mightHavePendingSyncWork = false; + var currentTime = now$1(); + var prev = null; + var root = firstScheduledRoot; - function popHostContainer(fiber) { - pop(contextStackCursor, fiber); - pop(contextFiberStackCursor, fiber); - pop(rootInstanceStackCursor, fiber); - } + while (root !== null) { + var next = root.next; - function getHostContext() { - var context = requiredContext(contextStackCursor.current); - return context; + if (currentEventTransitionLane !== NoLane && shouldAttemptEagerTransition()) { + // A transition was scheduled during an event, but we're going to try to + // render it synchronously anyway. We do this during a popstate event to + // preserve the scroll position of the previous page. + upgradePendingLaneToSync(root, currentEventTransitionLane); } - function pushHostContext(fiber) { - if (enableAsyncActions) { - var stateHook = fiber.memoizedState; - - if (stateHook !== null) { - // Only provide context if this fiber has been upgraded by a host - // transition. We use the same optimization for regular host context below. - push(hostTransitionProviderCursor, fiber, fiber); - } - } + var nextLanes = scheduleTaskForRootDuringMicrotask(root, currentTime); - var context = requiredContext(contextStackCursor.current); - var nextContext = getChildHostContext(context, fiber.type); // Don't push this Fiber's context unless it's unique. + if (nextLanes === NoLane) { + // This root has no more pending work. Remove it from the schedule. To + // guard against subtle reentrancy bugs, this microtask is the only place + // we do this — you can add roots to the schedule whenever, but you can + // only remove them here. + // Null this out so we know it's been removed from the schedule. + root.next = null; - if (context !== nextContext) { - // Track the context and the Fiber that provided it. - // This enables us to pop only Fibers that provide unique contexts. - push(contextFiberStackCursor, fiber, fiber); - push(contextStackCursor, nextContext, fiber); + if (prev === null) { + // This is the new head of the list + firstScheduledRoot = next; + } else { + prev.next = next; } - } - function popHostContext(fiber) { - if (contextFiberStackCursor.current === fiber) { - // Do not pop unless this Fiber provided the current context. - // pushHostContext() only pushes Fibers that provide unique contexts. - pop(contextStackCursor, fiber); - pop(contextFiberStackCursor, fiber); + if (next === null) { + // This is the new tail of the list + lastScheduledRoot = prev; } + } else { + // This root still has work. Keep it in the list. + prev = root; - if (enableAsyncActions) { - if (hostTransitionProviderCursor.current === fiber) { - // Do not pop unless this Fiber provided the current context. This is mostly - // a performance optimization, but conveniently it also prevents a potential - // data race where a host provider is upgraded (i.e. memoizedState becomes - // non-null) during a concurrent event. This is a bit of a flaw in the way - // we upgrade host components, but because we're accounting for it here, it - // should be fine. - pop(hostTransitionProviderCursor, fiber); // When popping the transition provider, we reset the context value back - // to `null`. We can do this because you're not allowd to nest forms. If - // we allowed for multiple nested host transition providers, then we'd - // need to reset this to the parent provider's status. - - { - HostTransitionContext._currentValue2 = null; - } - } + if (includesSyncLane(nextLanes)) { + mightHavePendingSyncWork = true; } } - var maxRowLength = 120; - var idealDepth = 15; - - function findNotableNode(node, indent) { - if ( - node.serverProps === undefined && - node.serverTail.length === 0 && - node.children.length === 1 && - node.distanceFromLeaf > 3 && - node.distanceFromLeaf > idealDepth - indent - ) { - // This is not an interesting node for contextual purposes so we can skip it. - var child = node.children[0]; - return findNotableNode(child, indent); - } + root = next; + } - return node; - } + currentEventTransitionLane = NoLane; // At the end of the microtask, flush any pending synchronous work. This has + // to come at the end, because it does actual rendering work that might throw. - function indentation(indent) { - return " " + " ".repeat(indent); - } + flushSyncWorkOnAllRoots(); +} - function added(indent) { - return "+ " + " ".repeat(indent); - } +function scheduleTaskForRootDuringMicrotask(root, currentTime) { + // This function is always called inside a microtask, or at the very end of a + // rendering task right before we yield to the main thread. It should never be + // called synchronously. + // + // TODO: Unless enableDeferRootSchedulingToMicrotask is off. We need to land + // that ASAP to unblock additional features we have planned. + // + // This function also never performs React work synchronously; it should + // only schedule work to be performed later, in a separate task or microtask. + // Check if any lanes are being starved by other work. If so, mark them as + // expired so we know to work on those next. + markStarvedLanesAsExpired(root, currentTime); // Determine the next lanes to work on, and their priority. + + var workInProgressRoot = getWorkInProgressRoot(); + var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); + var nextLanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); + var existingCallbackNode = root.callbackNode; + + if ( // Check if there's nothing to work on + nextLanes === NoLanes || // If this root is currently suspended and waiting for data to resolve, don't + // schedule a task to render it. We'll either wait for a ping, or wait to + // receive an update. + // + // Suspended render phase + root === workInProgressRoot && isWorkLoopSuspendedOnData() || // Suspended commit phase + root.cancelPendingCommit !== null) { + // Fast path: There's nothing to work on. + if (existingCallbackNode !== null) { + cancelCallback(existingCallbackNode); + } + + root.callbackNode = null; + root.callbackPriority = NoLane; + return NoLane; + } // Schedule a new callback in the host environment. + + + if (includesSyncLane(nextLanes)) { + // Synchronous work is always flushed at the end of the microtask, so we + // don't need to schedule an additional task. + if (existingCallbackNode !== null) { + cancelCallback(existingCallbackNode); + } + + root.callbackPriority = SyncLane; + root.callbackNode = null; + return SyncLane; + } else { + // We use the highest priority lane to represent the priority of the callback. + var existingCallbackPriority = root.callbackPriority; + var newCallbackPriority = getHighestPriorityLane(nextLanes); + + if (newCallbackPriority === existingCallbackPriority && // Special case related to `act`. If the currently scheduled task is a + // Scheduler task, rather than an `act` task, cancel it and re-schedule + // on the `act` queue. + !(ReactSharedInternals.actQueue !== null && existingCallbackNode !== fakeActCallbackNode$1)) { + // The priority hasn't changed. We can reuse the existing task. + return newCallbackPriority; + } else { + // Cancel the existing callback. We'll schedule a new one below. + cancelCallback(existingCallbackNode); + } + + var schedulerPriorityLevel; + + switch (lanesToEventPriority(nextLanes)) { + case DiscreteEventPriority: + schedulerPriorityLevel = ImmediatePriority; + break; + + case ContinuousEventPriority: + schedulerPriorityLevel = UserBlockingPriority; + break; + + case DefaultEventPriority: + schedulerPriorityLevel = NormalPriority$1; + break; + + case IdleEventPriority: + schedulerPriorityLevel = IdlePriority; + break; + + default: + schedulerPriorityLevel = NormalPriority$1; + break; + } + + var newCallbackNode = scheduleCallback$2(schedulerPriorityLevel, performConcurrentWorkOnRoot.bind(null, root)); + root.callbackPriority = newCallbackPriority; + root.callbackNode = newCallbackNode; + return newCallbackPriority; + } +} - function removed(indent) { - return "- " + " ".repeat(indent); - } +function getContinuationForRoot(root, originalCallbackNode) { + // This is called at the end of `performConcurrentWorkOnRoot` to determine + // if we need to schedule a continuation task. + // + // Usually `scheduleTaskForRootDuringMicrotask` only runs inside a microtask; + // however, since most of the logic for determining if we need a continuation + // versus a new task is the same, we cheat a bit and call it here. This is + // only safe to do because we know we're at the end of the browser task. + // So although it's not an actual microtask, it might as well be. + scheduleTaskForRootDuringMicrotask(root, now$1()); + + if (root.callbackNode === originalCallbackNode) { + // The task node scheduled for this root is the same one that's + // currently executed. Need to return a continuation. + return performConcurrentWorkOnRoot.bind(null, root); + } + + return null; +} +var fakeActCallbackNode$1 = {}; + +function scheduleCallback$2(priorityLevel, callback) { + if (ReactSharedInternals.actQueue !== null) { + // Special case: We're inside an `act` scope (a testing utility). + // Instead of scheduling work in the host environment, add it to a + // fake internal queue that's managed by the `act` implementation. + ReactSharedInternals.actQueue.push(callback); + return fakeActCallbackNode$1; + } else { + return scheduleCallback$3(priorityLevel, callback); + } +} - function describeFiberType(fiber) { - switch (fiber.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - return fiber.type; +function cancelCallback(callbackNode) { + if (callbackNode === fakeActCallbackNode$1) ; else if (callbackNode !== null) { + cancelCallback$1(callbackNode); + } +} - case LazyComponent: - return "Lazy"; +function scheduleImmediateTask(cb) { + if (ReactSharedInternals.actQueue !== null) { + // Special case: Inside an `act` scope, we push microtasks to the fake `act` + // callback queue. This is because we currently support calling `act` + // without awaiting the result. The plan is to deprecate that, and require + // that you always await the result so that the microtasks have a chance to + // run. But it hasn't happened yet. + ReactSharedInternals.actQueue.push(function () { + cb(); + return null; + }); + } // TODO: Can we land supportsMicrotasks? Which environments don't support it? + // Alternatively, can we move this check to the host config? - case SuspenseComponent: - return "Suspense"; - case SuspenseListComponent: - return "SuspenseList"; + if (supportsMicrotasks) { + scheduleMicrotask(function () { + // In Safari, appending an iframe forces microtasks to run. + // https://github.com/facebook/react/issues/22459 + // We don't support running callbacks in the middle of render + // or commit so we need to check against that. + var executionContext = getExecutionContext(); - case FunctionComponent: - case SimpleMemoComponent: - var fn = fiber.type; - return fn.displayName || fn.name || null; + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + // Note that this would still prematurely flush the callbacks + // if this happens outside render or commit phase (e.g. in an event). + // Intentionally using a macrotask instead of a microtask here. This is + // wrong semantically but it prevents an infinite loop. The bug is + // Safari's, not ours, so we just do our best to not crash even though + // the behavior isn't completely correct. + scheduleCallback$3(ImmediatePriority, cb); + return; + } - case ForwardRef: - var render = fiber.type.render; - return render.displayName || render.name || null; + cb(); + }); + } else { + // If microtasks are not supported, use Scheduler. + scheduleCallback$3(ImmediatePriority, cb); + } +} - case ClassComponent: - var ctr = fiber.type; - return ctr.displayName || ctr.name || null; +function requestTransitionLane( // This argument isn't used, it's only here to encourage the caller to +// check that it's inside a transition before calling this function. +// TODO: Make this non-nullable. Requires a tweak to useOptimistic. +transition) { + // The algorithm for assigning an update to a lane should be stable for all + // updates at the same priority within the same event. To do this, the + // inputs to the algorithm must be the same. + // + // The trick we use is to cache the first of each of these inputs within an + // event. Then reset the cached values once we can be sure the event is + // over. Our heuristic for that is whenever we enter a concurrent work loop. + if (currentEventTransitionLane === NoLane) { + // All transitions within the same event are assigned the same lane. + currentEventTransitionLane = claimNextTransitionLane(); + } + + return currentEventTransitionLane; +} - default: - // Skip - return null; +// transition updates that occur while the async action is still in progress +// are treated as part of the action. +// +// The ideal behavior would be to treat each async function as an independent +// action. However, without a mechanism like AsyncContext, we can't tell which +// action an update corresponds to. So instead, we entangle them all into one. +// The listeners to notify once the entangled scope completes. + +var currentEntangledListeners = null; // The number of pending async actions in the entangled scope. + +var currentEntangledPendingCount = 0; // The transition lane shared by all updates in the entangled scope. + +var currentEntangledLane = NoLane; // A thenable that resolves when the entangled scope completes. It does not +// resolve to a particular value because it's only used for suspending the UI +// until the async action scope has completed. + +var currentEntangledActionThenable = null; +function entangleAsyncAction(transition, thenable) { + // `thenable` is the return value of the async action scope function. Create + // a combined thenable that resolves once every entangled scope function + // has finished. + if (currentEntangledListeners === null) { + // There's no outer async action scope. Create a new one. + var entangledListeners = currentEntangledListeners = []; + currentEntangledPendingCount = 0; + currentEntangledLane = requestTransitionLane(); + var entangledThenable = { + status: 'pending', + value: undefined, + then: function (resolve) { + entangledListeners.push(resolve); } - } - - var needsEscaping = /["'&<>\n\t]/; + }; + currentEntangledActionThenable = entangledThenable; + } - function describeTextNode(content, maxLength) { - if (needsEscaping.test(content)) { - var encoded = JSON.stringify(content); + currentEntangledPendingCount++; + thenable.then(pingEngtangledActionScope, pingEngtangledActionScope); + return thenable; +} - if (encoded.length > maxLength - 2) { - if (maxLength < 8) { - return '{"..."}'; - } +function pingEngtangledActionScope() { + if (currentEntangledListeners !== null && --currentEntangledPendingCount === 0) { + // All the actions have finished. Close the entangled async action scope + // and notify all the listeners. + if (currentEntangledActionThenable !== null) { + var fulfilledThenable = currentEntangledActionThenable; + fulfilledThenable.status = 'fulfilled'; + } - return "{" + encoded.slice(0, maxLength - 7) + '..."}'; - } + var listeners = currentEntangledListeners; + currentEntangledListeners = null; + currentEntangledLane = NoLane; + currentEntangledActionThenable = null; - return "{" + encoded + "}"; - } else { - if (content.length > maxLength) { - if (maxLength < 5) { - return '{"..."}'; - } + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; + listener(); + } + } +} - return content.slice(0, maxLength - 3) + "..."; - } +function chainThenableValue(thenable, result) { + // Equivalent to: Promise.resolve(thenable).then(() => result), except we can + // cheat a bit since we know that that this thenable is only ever consumed + // by React. + // + // We don't technically require promise support on the client yet, hence this + // extra code. + var listeners = []; + var thenableWithOverride = { + status: 'pending', + value: null, + reason: null, + then: function (resolve) { + listeners.push(resolve); + } + }; + thenable.then(function (value) { + var fulfilledThenable = thenableWithOverride; + fulfilledThenable.status = 'fulfilled'; + fulfilledThenable.value = result; + + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; + listener(result); + } + }, function (error) { + var rejectedThenable = thenableWithOverride; + rejectedThenable.status = 'rejected'; + rejectedThenable.reason = error; + + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; // This is a perf hack where we call the `onFulfill` ping function + // instead of `onReject`, because we know that React is the only + // consumer of these promises, and it passes the same listener to both. + // We also know that it will read the error directly off the + // `.reason` field. + + listener(undefined); + } + }); + return thenableWithOverride; +} +function peekEntangledActionLane() { + return currentEntangledLane; +} +function peekEntangledActionThenable() { + return currentEntangledActionThenable; +} - return content; - } - } +var UpdateState = 0; +var ReplaceState = 1; +var ForceUpdate = 2; +var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`. +// It should only be read right after calling `processUpdateQueue`, via +// `checkHasForceUpdateAfterProcessing`. - function describeTextDiff(clientText, serverProps, indent) { - var maxLength = maxRowLength - indent * 2; +var hasForceUpdate = false; +var didWarnUpdateInsideUpdate; +var currentlyProcessingQueue; - if (serverProps === null) { - return added(indent) + describeTextNode(clientText, maxLength) + "\n"; - } else if (typeof serverProps === "string") { - var serverText = serverProps; - var firstDiff = 0; +{ + didWarnUpdateInsideUpdate = false; + currentlyProcessingQueue = null; +} - for ( - ; - firstDiff < serverText.length && firstDiff < clientText.length; - firstDiff++ - ) { - if ( - serverText.charCodeAt(firstDiff) !== - clientText.charCodeAt(firstDiff) - ) { - break; - } - } +function initializeUpdateQueue(fiber) { + var queue = { + baseState: fiber.memoizedState, + firstBaseUpdate: null, + lastBaseUpdate: null, + shared: { + pending: null, + lanes: NoLanes, + hiddenCallbacks: null + }, + callbacks: null + }; + fiber.updateQueue = queue; +} +function cloneUpdateQueue(current, workInProgress) { + // Clone the update queue from current. Unless it's already a clone. + var queue = workInProgress.updateQueue; + var currentQueue = current.updateQueue; + + if (queue === currentQueue) { + var clone = { + baseState: currentQueue.baseState, + firstBaseUpdate: currentQueue.firstBaseUpdate, + lastBaseUpdate: currentQueue.lastBaseUpdate, + shared: currentQueue.shared, + callbacks: null + }; + workInProgress.updateQueue = clone; + } +} +function createUpdate(lane) { + var update = { + lane: lane, + tag: UpdateState, + payload: null, + callback: null, + next: null + }; + return update; +} +function enqueueUpdate(fiber, update, lane) { + var updateQueue = fiber.updateQueue; - if (firstDiff > maxLength - 8 && firstDiff > 10) { - // The first difference between the two strings would be cut off, so cut off in - // the beginning instead. - clientText = "..." + clientText.slice(firstDiff - 8); - serverText = "..." + serverText.slice(firstDiff - 8); - } + if (updateQueue === null) { + // Only occurs if the fiber has been unmounted. + return null; + } - return ( - added(indent) + - describeTextNode(clientText, maxLength) + - "\n" + - removed(indent) + - describeTextNode(serverText, maxLength) + - "\n" - ); - } else { - return ( - indentation(indent) + describeTextNode(clientText, maxLength) + "\n" - ); - } - } + var sharedQueue = updateQueue.shared; - function objectName(object) { - // $FlowFixMe[method-unbinding] - var name = Object.prototype.toString.call(object); - return name.replace(/^\[object (.*)\]$/, function (m, p0) { - return p0; - }); - } + { + if (currentlyProcessingQueue === sharedQueue && !didWarnUpdateInsideUpdate) { + var componentName = getComponentNameFromFiber(fiber); - function describeValue(value, maxLength) { - switch (typeof value) { - case "string": { - var encoded = JSON.stringify(value); + error('An update (setState, replaceState, or forceUpdate) was scheduled ' + 'from inside an update function. Update functions should be pure, ' + 'with zero side-effects. Consider using componentDidUpdate or a ' + 'callback.\n\nPlease update the following component: %s', componentName); - if (encoded.length > maxLength) { - if (maxLength < 5) { - return '"..."'; - } + didWarnUpdateInsideUpdate = true; + } + } - return encoded.slice(0, maxLength - 4) + '..."'; - } + if (isUnsafeClassRenderPhaseUpdate()) { + // This is an unsafe render phase update. Add directly to the update + // queue so we can process it immediately during the current render. + var pending = sharedQueue.pending; - return encoded; - } + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } - case "object": { - if (value === null) { - return "null"; - } + sharedQueue.pending = update; // Update the childLanes even though we're most likely already rendering + // this fiber. This is for backwards compatibility in the case where you + // update a different component during render phase than the one that is + // currently renderings (a pattern that is accompanied by a warning). - if (isArray(value)) { - return "[...]"; - } + return unsafe_markUpdateLaneFromFiberToRoot(fiber, lane); + } else { + return enqueueConcurrentClassUpdate(fiber, sharedQueue, update, lane); + } +} +function entangleTransitions(root, fiber, lane) { + var updateQueue = fiber.updateQueue; - if (value.$$typeof === REACT_ELEMENT_TYPE) { - var type = getComponentNameFromType(value.type); - return type ? "<" + type + ">" : "<...>"; - } + if (updateQueue === null) { + // Only occurs if the fiber has been unmounted. + return; + } - var name = objectName(value); + var sharedQueue = updateQueue.shared; - if (name === "Object") { - var properties = ""; - maxLength -= 2; + if (isTransitionLane(lane)) { + var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must + // have finished. We can remove them from the shared queue, which represents + // a superset of the actually pending lanes. In some cases we may entangle + // more than we need to, but that's OK. In fact it's worse if we *don't* + // entangle when we should. - for (var propName in value) { - if (!value.hasOwnProperty(propName)) { - continue; - } + queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. - var jsonPropName = JSON.stringify(propName); + var newQueueLanes = mergeLanes(queueLanes, lane); + sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if + // the lane finished since the last time we entangled it. So we need to + // entangle it again, just to be sure. - if (jsonPropName !== '"' + propName + '"') { - propName = jsonPropName; - } + markRootEntangled(root, newQueueLanes); + } +} +function enqueueCapturedUpdate(workInProgress, capturedUpdate) { + // Captured updates are updates that are thrown by a child during the render + // phase. They should be discarded if the render is aborted. Therefore, + // we should only put them on the work-in-progress queue, not the current one. + var queue = workInProgress.updateQueue; // Check if the work-in-progress queue is a clone. + + var current = workInProgress.alternate; + + if (current !== null) { + var currentQueue = current.updateQueue; + + if (queue === currentQueue) { + // The work-in-progress queue is the same as current. This happens when + // we bail out on a parent fiber that then captures an error thrown by + // a child. Since we want to append the update only to the work-in + // -progress queue, we need to clone the updates. We usually clone during + // processUpdateQueue, but that didn't happen in this case because we + // skipped over the parent when we bailed out. + var newFirst = null; + var newLast = null; + var firstBaseUpdate = queue.firstBaseUpdate; - maxLength -= propName.length - 2; - var propValue = describeValue( - value[propName], - maxLength < 15 ? maxLength : 15 - ); - maxLength -= propValue.length; + if (firstBaseUpdate !== null) { + // Loop through the updates and clone them. + var update = firstBaseUpdate; - if (maxLength < 0) { - properties += properties === "" ? "..." : ", ..."; - break; - } + do { + var clone = { + lane: update.lane, + tag: update.tag, + payload: update.payload, + // When this update is rebased, we should not fire its + // callback again. + callback: null, + next: null + }; - properties += - (properties === "" ? "" : ",") + propName + ":" + propValue; - } + if (newLast === null) { + newFirst = newLast = clone; + } else { + newLast.next = clone; + newLast = clone; + } // $FlowFixMe[incompatible-type] we bail out when we get a null - return "{" + properties + "}"; - } - return name; - } + update = update.next; + } while (update !== null); // Append the captured update the end of the cloned list. - case "function": { - var _name = value.displayName || value.name; - return _name ? "function " + _name : "function"; + if (newLast === null) { + newFirst = newLast = capturedUpdate; + } else { + newLast.next = capturedUpdate; + newLast = capturedUpdate; } - - default: - // eslint-disable-next-line react-internal/safe-string-coercion - return String(value); + } else { + // There are no base updates. + newFirst = newLast = capturedUpdate; } + + queue = { + baseState: currentQueue.baseState, + firstBaseUpdate: newFirst, + lastBaseUpdate: newLast, + shared: currentQueue.shared, + callbacks: currentQueue.callbacks + }; + workInProgress.updateQueue = queue; + return; } + } // Append the update to the end of the list. - function describePropValue(value, maxLength) { - if (typeof value === "string" && !needsEscaping.test(value)) { - if (value.length > maxLength - 2) { - if (maxLength < 5) { - return '"..."'; - } - return '"' + value.slice(0, maxLength - 5) + '..."'; - } + var lastBaseUpdate = queue.lastBaseUpdate; - return '"' + value + '"'; - } + if (lastBaseUpdate === null) { + queue.firstBaseUpdate = capturedUpdate; + } else { + lastBaseUpdate.next = capturedUpdate; + } - return "{" + describeValue(value, maxLength - 2) + "}"; - } + queue.lastBaseUpdate = capturedUpdate; +} - function describeCollapsedElement(type, props, indent) { - // This function tries to fit the props into a single line for non-essential elements. - // We also ignore children because we're not going deeper. - var maxLength = maxRowLength - indent * 2 - type.length - 2; - var content = ""; +function getStateFromUpdate(workInProgress, queue, update, prevState, nextProps, instance) { + switch (update.tag) { + case ReplaceState: + { + var payload = update.payload; - for (var propName in props) { - if (!props.hasOwnProperty(propName)) { - continue; - } + if (typeof payload === 'function') { + // Updater function + { + enterDisallowedContextReadInDEV(); + } - if (propName === "children") { - // Ignored. - continue; - } + var nextState = payload.call(instance, prevState, nextProps); - var propValue = describePropValue(props[propName], 15); - maxLength -= propName.length + propValue.length + 2; + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - if (maxLength < 0) { - content += " ..."; - break; - } + try { + payload.call(instance, prevState, nextProps); + } finally { + setIsStrictModeForDevtools(false); + } + } - content += " " + propName + "=" + propValue; - } + exitDisallowedContextReadInDEV(); + } - return indentation(indent) + "<" + type + content + ">\n"; - } + return nextState; + } // State object - function describeExpandedElement(type, props, rowPrefix) { - // This function tries to fit the props into a single line for non-essential elements. - // We also ignore children because we're not going deeper. - var remainingRowLength = maxRowLength - rowPrefix.length - type.length; // We add the properties to a set so we can choose later whether we'll put it on one - // line or multiple lines. - var properties = []; + return payload; + } - for (var propName in props) { - if (!props.hasOwnProperty(propName)) { - continue; - } + case CaptureUpdate: + { + workInProgress.flags = workInProgress.flags & ~ShouldCapture | DidCapture; + } + // Intentional fallthrough - if (propName === "children") { - // Ignored. - continue; - } + case UpdateState: + { + var _payload = update.payload; + var partialState; - var maxLength = maxRowLength - rowPrefix.length - propName.length - 1; - var propValue = describePropValue(props[propName], maxLength); - remainingRowLength -= propName.length + propValue.length + 2; - properties.push(propName + "=" + propValue); - } + if (typeof _payload === 'function') { + // Updater function + { + enterDisallowedContextReadInDEV(); + } - if (properties.length === 0) { - return rowPrefix + "<" + type + ">\n"; - } else if (remainingRowLength > 0) { - // We can fit all on one row. - return rowPrefix + "<" + type + " " + properties.join(" ") + ">\n"; - } else { - // Split into one row per property: - return ( - rowPrefix + - "<" + - type + - "\n" + - rowPrefix + - " " + - properties.join("\n" + rowPrefix + " ") + - "\n" + - rowPrefix + - ">\n" - ); - } - } - - function describePropertiesDiff(clientObject, serverObject, indent) { - var properties = ""; - var remainingServerProperties = assign({}, serverObject); - - for (var propName in clientObject) { - if (!clientObject.hasOwnProperty(propName)) { - continue; - } + partialState = _payload.call(instance, prevState, nextProps); - delete remainingServerProperties[propName]; - var maxLength = maxRowLength - indent * 2 - propName.length - 2; - var clientValue = clientObject[propName]; - var clientPropValue = describeValue(clientValue, maxLength); + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - if (serverObject.hasOwnProperty(propName)) { - var serverValue = serverObject[propName]; - var serverPropValue = describeValue(serverValue, maxLength); - properties += - added(indent) + propName + ": " + clientPropValue + "\n"; - properties += - removed(indent) + propName + ": " + serverPropValue + "\n"; - } else { - properties += - added(indent) + propName + ": " + clientPropValue + "\n"; - } - } + try { + _payload.call(instance, prevState, nextProps); + } finally { + setIsStrictModeForDevtools(false); + } + } - for (var _propName in remainingServerProperties) { - if (!remainingServerProperties.hasOwnProperty(_propName)) { - continue; + exitDisallowedContextReadInDEV(); + } + } else { + // Partial state object + partialState = _payload; } - var _maxLength = maxRowLength - indent * 2 - _propName.length - 2; - - var _serverValue = remainingServerProperties[_propName]; + if (partialState === null || partialState === undefined) { + // Null and undefined are treated as no-ops. + return prevState; + } // Merge the partial state and the previous state. - var _serverPropValue = describeValue(_serverValue, _maxLength); - properties += - removed(indent) + _propName + ": " + _serverPropValue + "\n"; + return assign({}, prevState, partialState); } - return properties; - } + case ForceUpdate: + { + hasForceUpdate = true; + return prevState; + } + } - function describeElementDiff(type, clientProps, serverProps, indent) { - var content = ""; // Maps any previously unmatched lower case server prop name to its full prop name + return prevState; +} - var serverPropNames = new Map(); +var didReadFromEntangledAsyncAction = false; // Each call to processUpdateQueue should be accompanied by a call to this. It's +// only in a separate function because in updateHostRoot, it must happen after +// all the context stacks have been pushed to, to prevent a stack mismatch. A +// bit unfortunate. + +function suspendIfUpdateReadFromEntangledAsyncAction() { + // Check if this update is part of a pending async action. If so, we'll + // need to suspend until the action has finished, so that it's batched + // together with future updates in the same action. + // TODO: Once we support hooks inside useMemo (or an equivalent + // memoization boundary like Forget), hoist this logic so that it only + // suspends if the memo boundary produces a new value. + if (didReadFromEntangledAsyncAction) { + var entangledActionThenable = peekEntangledActionThenable(); + + if (entangledActionThenable !== null) { + // TODO: Instead of the throwing the thenable directly, throw a + // special object like `use` does so we can detect if it's captured + // by userspace. + throw entangledActionThenable; + } + } +} +function processUpdateQueue(workInProgress, props, instance, renderLanes) { + didReadFromEntangledAsyncAction = false; // This is always non-null on a ClassComponent or HostRoot - for (var propName in serverProps) { - if (!serverProps.hasOwnProperty(propName)) { - continue; - } + var queue = workInProgress.updateQueue; + hasForceUpdate = false; - serverPropNames.set(propName.toLowerCase(), propName); - } + { + currentlyProcessingQueue = queue.shared; + } - if (serverPropNames.size === 1 && serverPropNames.has("children")) { - content += describeExpandedElement( - type, - clientProps, - indentation(indent) - ); - } else { - for (var _propName2 in clientProps) { - if (!clientProps.hasOwnProperty(_propName2)) { - continue; - } + var firstBaseUpdate = queue.firstBaseUpdate; + var lastBaseUpdate = queue.lastBaseUpdate; // Check if there are pending updates. If so, transfer them to the base queue. - if (_propName2 === "children") { - // Handled below. - continue; - } + var pendingQueue = queue.shared.pending; - var maxLength = - maxRowLength - (indent + 1) * 2 - _propName2.length - 1; - var serverPropName = serverPropNames.get(_propName2.toLowerCase()); - - if (serverPropName !== undefined) { - serverPropNames.delete(_propName2.toLowerCase()); // There's a diff here. - - var clientValue = clientProps[_propName2]; - var serverValue = serverProps[serverPropName]; - var clientPropValue = describePropValue(clientValue, maxLength); - var serverPropValue = describePropValue(serverValue, maxLength); - - if ( - typeof clientValue === "object" && - clientValue !== null && - typeof serverValue === "object" && - serverValue !== null && - objectName(clientValue) === "Object" && - objectName(serverValue) === "Object" && // Only do the diff if the object has a lot of keys or was shortened. - (Object.keys(clientValue).length > 2 || - Object.keys(serverValue).length > 2 || - clientPropValue.indexOf("...") > -1 || - serverPropValue.indexOf("...") > -1) - ) { - // We're comparing two plain objects. We can diff the nested objects instead. - content += - indentation(indent + 1) + - _propName2 + - "={{\n" + - describePropertiesDiff(clientValue, serverValue, indent + 2) + - indentation(indent + 1) + - "}}\n"; - } else { - content += - added(indent + 1) + _propName2 + "=" + clientPropValue + "\n"; - content += - removed(indent + 1) + _propName2 + "=" + serverPropValue + "\n"; - } - } else { - // Considered equal. - content += - indentation(indent + 1) + - _propName2 + - "=" + - describePropValue(clientProps[_propName2], maxLength) + - "\n"; - } - } + if (pendingQueue !== null) { + queue.shared.pending = null; // The pending queue is circular. Disconnect the pointer between first + // and last so that it's non-circular. - serverPropNames.forEach(function (propName) { - if (propName === "children") { - // Handled below. - return; - } + var lastPendingUpdate = pendingQueue; + var firstPendingUpdate = lastPendingUpdate.next; + lastPendingUpdate.next = null; // Append pending updates to base queue - var maxLength = maxRowLength - (indent + 1) * 2 - propName.length - 1; - content += - removed(indent + 1) + - propName + - "=" + - describePropValue(serverProps[propName], maxLength) + - "\n"; - }); + if (lastBaseUpdate === null) { + firstBaseUpdate = firstPendingUpdate; + } else { + lastBaseUpdate.next = firstPendingUpdate; + } - if (content === "") { - // No properties - content = indentation(indent) + "<" + type + ">\n"; - } else { - // Had properties - content = - indentation(indent) + - "<" + - type + - "\n" + - content + - indentation(indent) + - ">\n"; - } - } + lastBaseUpdate = lastPendingUpdate; // If there's a current queue, and it's different from the base queue, then + // we need to transfer the updates to that queue, too. Because the base + // queue is a singly-linked list with no cycles, we can append to both + // lists and take advantage of structural sharing. + // TODO: Pass `current` as argument - var serverChildren = serverProps.children; - var clientChildren = clientProps.children; + var current = workInProgress.alternate; - if ( - typeof serverChildren === "string" || - typeof serverChildren === "number" || - typeof serverChildren === "bigint" - ) { - // There's a diff of the children. - // $FlowFixMe[unsafe-addition] - var serverText = "" + serverChildren; - var clientText = ""; + if (current !== null) { + // This is always non-null on a ClassComponent or HostRoot + var currentQueue = current.updateQueue; + var currentLastBaseUpdate = currentQueue.lastBaseUpdate; - if ( - typeof clientChildren === "string" || - typeof clientChildren === "number" || - typeof clientChildren === "bigint" - ) { - // $FlowFixMe[unsafe-addition] - clientText = "" + clientChildren; + if (currentLastBaseUpdate !== lastBaseUpdate) { + if (currentLastBaseUpdate === null) { + currentQueue.firstBaseUpdate = firstPendingUpdate; + } else { + currentLastBaseUpdate.next = firstPendingUpdate; } - content += describeTextDiff(clientText, serverText, indent + 1); - } else if ( - typeof clientChildren === "string" || - typeof clientChildren === "number" || - typeof clientChildren === "bigint" - ) { - // The client has children but it's not considered a difference from the server. - // $FlowFixMe[unsafe-addition] - content += describeTextDiff("" + clientChildren, undefined, indent + 1); + currentQueue.lastBaseUpdate = lastPendingUpdate; } - - return content; } + } // These values may change as we process the queue. - function describeSiblingFiber(fiber, indent) { - var type = describeFiberType(fiber); - if (type === null) { - // Skip this type of fiber. We currently treat this as a fragment - // so it's just part of the parent's children. - var flatContent = ""; - var childFiber = fiber.child; + if (firstBaseUpdate !== null) { + // Iterate through the list of updates to compute the result. + var newState = queue.baseState; // TODO: Don't need to accumulate this. Instead, we can remove renderLanes + // from the original lanes. - while (childFiber) { - flatContent += describeSiblingFiber(childFiber, indent); - childFiber = childFiber.sibling; - } + var newLanes = NoLanes; + var newBaseState = null; + var newFirstBaseUpdate = null; + var newLastBaseUpdate = null; + var update = firstBaseUpdate; - return flatContent; - } + do { + // An extra OffscreenLane bit is added to updates that were made to + // a hidden tree, so that we can distinguish them from updates that were + // already there when the tree was hidden. + var updateLane = removeLanes(update.lane, OffscreenLane); + var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then + // it's not a "base" update and we should disregard the extra base lanes + // that were added to renderLanes when we entered the Offscreen tree. - return indentation(indent) + "<" + type + ">" + "\n"; - } + var shouldSkipUpdate = isHiddenUpdate ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) : !isSubsetOfLanes(renderLanes, updateLane); - function describeNode(node, indent) { - var skipToNode = findNotableNode(node, indent); + if (shouldSkipUpdate) { + // Priority is insufficient. Skip this update. If this is the first + // skipped update, the previous update/state is the new base + // update/state. + var clone = { + lane: updateLane, + tag: update.tag, + payload: update.payload, + callback: update.callback, + next: null + }; - if ( - skipToNode !== node && - (node.children.length !== 1 || node.children[0] !== skipToNode) - ) { - return ( - indentation(indent) + "...\n" + describeNode(skipToNode, indent + 1) - ); - } // Prefix with any server components for context + if (newLastBaseUpdate === null) { + newFirstBaseUpdate = newLastBaseUpdate = clone; + newBaseState = newState; + } else { + newLastBaseUpdate = newLastBaseUpdate.next = clone; + } // Update the remaining priority in the queue. - var parentContent = ""; - var debugInfo = node.fiber._debugInfo; - if (debugInfo) { - for (var i = 0; i < debugInfo.length; i++) { - var serverComponentName = debugInfo[i].name; + newLanes = mergeLanes(newLanes, updateLane); + } else { + // This update does have sufficient priority. + // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. + if (updateLane !== NoLane && updateLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } + + if (newLastBaseUpdate !== null) { + var _clone = { + // This update is going to be committed so we never want uncommit + // it. Using NoLane works because 0 is a subset of all bitmasks, so + // this will never be skipped by the check above. + lane: NoLane, + tag: update.tag, + payload: update.payload, + // When this update is rebased, we should not fire its + // callback again. + callback: null, + next: null + }; + newLastBaseUpdate = newLastBaseUpdate.next = _clone; + } // Process this update. - if (typeof serverComponentName === "string") { - parentContent += - indentation(indent) + "<" + serverComponentName + ">" + "\n"; - indent++; - } - } - } // Self - var selfContent = ""; // We use the pending props since we might be generating a diff before the complete phase - // when something throws. + newState = getStateFromUpdate(workInProgress, queue, update, newState, props, instance); + var callback = update.callback; - var clientProps = node.fiber.pendingProps; + if (callback !== null) { + workInProgress.flags |= Callback; - if (node.fiber.tag === HostText) { - // Text Node - selfContent = describeTextDiff(clientProps, node.serverProps, indent); - } else { - var type = describeFiberType(node.fiber); - - if (type !== null) { - // Element Node - if (node.serverProps === undefined) { - // Just a reference node for context. - selfContent = describeCollapsedElement(type, clientProps, indent); - indent++; - } else if (node.serverProps === null) { - selfContent = describeExpandedElement( - type, - clientProps, - added(indent) - ); // If this was an insertion we won't step down further. Any tail - // are considered siblings so we don't indent. - // TODO: Model this a little better. - } else if (typeof node.serverProps === "string") { - { - error( - "Should not have matched a non HostText fiber to a Text node. This is a bug in React." - ); - } - } else { - selfContent = describeElementDiff( - type, - clientProps, - node.serverProps, - indent - ); - indent++; + if (isHiddenUpdate) { + workInProgress.flags |= Visibility; } - } - } // Compute children - var childContent = ""; - var childFiber = node.fiber.child; - var diffIdx = 0; + var callbacks = queue.callbacks; - while (childFiber && diffIdx < node.children.length) { - var childNode = node.children[diffIdx]; - - if (childNode.fiber === childFiber) { - // This was a match in the diff. - childContent += describeNode(childNode, indent); - diffIdx++; - } else { - // This is an unrelated previous sibling. - childContent += describeSiblingFiber(childFiber, indent); + if (callbacks === null) { + queue.callbacks = [callback]; + } else { + callbacks.push(callback); + } } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - childFiber = childFiber.sibling; - } - - if (childFiber && node.children.length > 0) { - // If we had any further siblings after the last mismatch, we can't be sure if it's - // actually a valid match since it might not have found a match. So we exclude next - // siblings to avoid confusion. - childContent += indentation(indent) + "..." + "\n"; - } // Deleted tail nodes - var serverTail = node.serverTail; + update = update.next; - for (var _i = 0; _i < serverTail.length; _i++) { - var tailNode = serverTail[_i]; + if (update === null) { + pendingQueue = queue.shared.pending; - if (typeof tailNode === "string") { - // Removed text node - childContent += - removed(indent) + - describeTextNode(tailNode, maxRowLength - indent * 2) + - "\n"; + if (pendingQueue === null) { + break; } else { - // Removed element - childContent += describeExpandedElement( - tailNode.type, - tailNode.props, - removed(indent) - ); + // An update was scheduled from inside a reducer. Add the new + // pending updates to the end of the list and keep processing. + var _lastPendingUpdate = pendingQueue; // Intentionally unsound. Pending updates form a circular list, but we + // unravel them when transferring them to the base queue. + + var _firstPendingUpdate = _lastPendingUpdate.next; + _lastPendingUpdate.next = null; + update = _firstPendingUpdate; + queue.lastBaseUpdate = _lastPendingUpdate; + queue.shared.pending = null; } } + } while (true); - return parentContent + selfContent + childContent; + if (newLastBaseUpdate === null) { + newBaseState = newState; } - function describeDiff(rootNode) { - try { - return "\n\n" + describeNode(rootNode, 0); - } catch (x) { - return ""; - } - } + queue.baseState = newBaseState; + queue.firstBaseUpdate = newFirstBaseUpdate; + queue.lastBaseUpdate = newLastBaseUpdate; - var isHydrating = false; // This flag allows for warning supression when we expect there to be mismatches + if (firstBaseUpdate === null) { + // `queue.lanes` is used for entangling transitions. We can set it back to + // zero once the queue is empty. + queue.shared.lanes = NoLanes; + } // Set the remaining expiration time to be whatever is remaining in the queue. + // This should be fine because the only two other things that contribute to + // expiration time are props and context. We're already in the middle of the + // begin phase by the time we start processing the queue, so we've already + // dealt with the props. Context in components that specify + // shouldComponentUpdate is tricky; but we'll have to account for + // that regardless. - var hydrationDiffRootDEV = null; // Hydration errors that were thrown inside this boundary - var hydrationErrors = null; + markSkippedUpdateLanes(newLanes); + workInProgress.lanes = newLanes; + workInProgress.memoizedState = newState; + } - function prepareToHydrateHostInstance(fiber, hostContext) { - { - throw new Error( - "Expected prepareToHydrateHostInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } + { + currentlyProcessingQueue = null; + } +} - function prepareToHydrateHostTextInstance(fiber) { - { - throw new Error( - "Expected prepareToHydrateHostTextInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } +function callCallback(callback, context) { + if (typeof callback !== 'function') { + throw new Error('Invalid argument passed as callback. Expected a function. Instead ' + ("received: " + callback)); + } - function prepareToHydrateHostSuspenseInstance(fiber) { - { - throw new Error( - "Expected prepareToHydrateHostSuspenseInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } + callback.call(context); +} - function popHydrationState(fiber) { - { - return false; - } - } +function resetHasForceUpdateBeforeProcessing() { + hasForceUpdate = false; +} +function checkHasForceUpdateAfterProcessing() { + return hasForceUpdate; +} +function deferHiddenCallbacks(updateQueue) { + // When an update finishes on a hidden component, its callback should not + // be fired until/unless the component is made visible again. Stash the + // callback on the shared queue object so it can be fired later. + var newHiddenCallbacks = updateQueue.callbacks; - function upgradeHydrationErrorsToRecoverable() { - if (hydrationErrors !== null) { - // Successfully completed a forced client render. The errors that occurred - // during the hydration attempt are now recovered. We will log them in - // commit phase, once the entire tree has finished. - queueRecoverableErrors(hydrationErrors); - hydrationErrors = null; - } - } + if (newHiddenCallbacks !== null) { + var existingHiddenCallbacks = updateQueue.shared.hiddenCallbacks; - function getIsHydrating() { - return isHydrating; + if (existingHiddenCallbacks === null) { + updateQueue.shared.hiddenCallbacks = newHiddenCallbacks; + } else { + updateQueue.shared.hiddenCallbacks = existingHiddenCallbacks.concat(newHiddenCallbacks); } + } +} +function commitHiddenCallbacks(updateQueue, context) { + // This component is switching from hidden -> visible. Commit any callbacks + // that were previously deferred. + var hiddenCallbacks = updateQueue.shared.hiddenCallbacks; - function queueHydrationError(error) { - if (hydrationErrors === null) { - hydrationErrors = [error]; - } else { - hydrationErrors.push(error); - } + if (hiddenCallbacks !== null) { + updateQueue.shared.hiddenCallbacks = null; + + for (var i = 0; i < hiddenCallbacks.length; i++) { + var callback = hiddenCallbacks[i]; + callCallback(callback, context); } - function emitPendingHydrationWarnings() { - { - // If we haven't yet thrown any hydration errors by the time we reach the end we've successfully - // hydrated, however, we might still have DEV-only mismatches that we log now. - var diffRoot = hydrationDiffRootDEV; - - if (diffRoot !== null) { - hydrationDiffRootDEV = null; - var diff = describeDiff(diffRoot); - - error( - "A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. This won't be patched up. " + - "This can happen if a SSR-ed Client Component used:\n" + - "\n" + - "- A server/client branch `if (typeof window !== 'undefined')`.\n" + - "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + - "- Date formatting in a user's locale which doesn't match the server.\n" + - "- External changing data without sending a snapshot of it along with the HTML.\n" + - "- Invalid HTML tag nesting.\n" + - "\n" + - "It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n" + - "\n" + - "%s%s", - "https://react.dev/link/hydration-mismatch", - diff - ); - } - } - } - - // we wait until the current render is over (either finished or interrupted) - // before adding it to the fiber/hook queue. Push to this array so we can - // access the queue, fiber, update, et al later. - - var concurrentQueues = []; - var concurrentQueuesIndex = 0; - var concurrentlyUpdatedLanes = NoLanes; - function finishQueueingConcurrentUpdates() { - var endIndex = concurrentQueuesIndex; - concurrentQueuesIndex = 0; - concurrentlyUpdatedLanes = NoLanes; - var i = 0; - - while (i < endIndex) { - var fiber = concurrentQueues[i]; - concurrentQueues[i++] = null; - var queue = concurrentQueues[i]; - concurrentQueues[i++] = null; - var update = concurrentQueues[i]; - concurrentQueues[i++] = null; - var lane = concurrentQueues[i]; - concurrentQueues[i++] = null; - - if (queue !== null && update !== null) { - var pending = queue.pending; - - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + } +} +function commitCallbacks(updateQueue, context) { + var callbacks = updateQueue.callbacks; - queue.pending = update; - } + if (callbacks !== null) { + updateQueue.callbacks = null; - if (lane !== NoLane) { - markUpdateLaneFromFiberToRoot(fiber, update, lane); - } - } + for (var i = 0; i < callbacks.length; i++) { + var callback = callbacks[i]; + callCallback(callback, context); } - function getConcurrentlyUpdatedLanes() { - return concurrentlyUpdatedLanes; - } - - function enqueueUpdate$1(fiber, queue, update, lane) { - // Don't update the `childLanes` on the return path yet. If we already in - // the middle of rendering, wait until after it has completed. - concurrentQueues[concurrentQueuesIndex++] = fiber; - concurrentQueues[concurrentQueuesIndex++] = queue; - concurrentQueues[concurrentQueuesIndex++] = update; - concurrentQueues[concurrentQueuesIndex++] = lane; - concurrentlyUpdatedLanes = mergeLanes(concurrentlyUpdatedLanes, lane); // The fiber's `lane` field is used in some places to check if any work is - // scheduled, to perform an eager bailout, so we need to update it immediately. - // TODO: We should probably move this to the "shared" queue instead. + } +} - fiber.lanes = mergeLanes(fiber.lanes, lane); - var alternate = fiber.alternate; +// $FlowFixMe[method-unbinding] +var hasOwnProperty = Object.prototype.hasOwnProperty; - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, lane); - } - } - - function enqueueConcurrentHookUpdate(fiber, queue, update, lane) { - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); - return getRootForUpdatedFiber(fiber); - } - function enqueueConcurrentHookUpdateAndEagerlyBailout( - fiber, - queue, - update - ) { - // This function is used to queue an update that doesn't need a rerender. The - // only reason we queue it is in case there's a subsequent higher priority - // update that causes it to be rebased. - var lane = NoLane; - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); // Usually we can rely on the upcoming render phase to process the concurrent - // queue. However, since this is a bail out, we're not scheduling any work - // here. So the update we just queued will leak until something else happens - // to schedule work (if ever). - // - // Check if we're currently in the middle of rendering a tree, and if not, - // process the queue immediately to prevent a leak. +/** + * Performs equality by iterating through keys on an object and returning false + * when any key has values which are not strictly equal between the arguments. + * Returns true when the values of all keys are strictly equal. + */ - var isConcurrentlyRendering = getWorkInProgressRoot() !== null; +function shallowEqual(objA, objB) { + if (objectIs(objA, objB)) { + return true; + } - if (!isConcurrentlyRendering) { - finishQueueingConcurrentUpdates(); - } - } - function enqueueConcurrentClassUpdate(fiber, queue, update, lane) { - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); - return getRootForUpdatedFiber(fiber); - } - function enqueueConcurrentRenderForLane(fiber, lane) { - enqueueUpdate$1(fiber, null, null, lane); - return getRootForUpdatedFiber(fiber); - } // Calling this function outside this module should only be done for backwards - // compatibility and should always be accompanied by a warning. + if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) { + return false; + } - function unsafe_markUpdateLaneFromFiberToRoot(sourceFiber, lane) { - // NOTE: For Hyrum's Law reasons, if an infinite update loop is detected, it - // should throw before `markUpdateLaneFromFiberToRoot` is called. But this is - // undefined behavior and we can change it if we need to; it just so happens - // that, at the time of this writing, there's an internal product test that - // happens to rely on this. - var root = getRootForUpdatedFiber(sourceFiber); - markUpdateLaneFromFiberToRoot(sourceFiber, null, lane); - return root; - } + var keysA = Object.keys(objA); + var keysB = Object.keys(objB); - function markUpdateLaneFromFiberToRoot(sourceFiber, update, lane) { - // Update the source fiber's lanes - sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane); - var alternate = sourceFiber.alternate; + if (keysA.length !== keysB.length) { + return false; + } // Test for A's keys different from B. - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, lane); - } // Walk the parent path to the root and update the child lanes. - var isHidden = false; - var parent = sourceFiber.return; - var node = sourceFiber; + for (var i = 0; i < keysA.length; i++) { + var currentKey = keysA[i]; - while (parent !== null) { - parent.childLanes = mergeLanes(parent.childLanes, lane); - alternate = parent.alternate; + if (!hasOwnProperty.call(objB, currentKey) || // $FlowFixMe[incompatible-use] lost refinement of `objB` + !objectIs(objA[currentKey], objB[currentKey])) { + return false; + } + } - if (alternate !== null) { - alternate.childLanes = mergeLanes(alternate.childLanes, lane); - } + return true; +} - if (parent.tag === OffscreenComponent) { - // Check if this offscreen boundary is currently hidden. - // - // The instance may be null if the Offscreen parent was unmounted. Usually - // the parent wouldn't be reachable in that case because we disconnect - // fibers from the tree when they are deleted. However, there's a weird - // edge case where setState is called on a fiber that was interrupted - // before it ever mounted. Because it never mounts, it also never gets - // deleted. Because it never gets deleted, its return pointer never gets - // disconnected. Which means it may be attached to a deleted Offscreen - // parent node. (This discovery suggests it may be better for memory usage - // if we don't attach the `return` pointer until the commit phase, though - // in order to do that we'd need some other way to track the return - // pointer during the initial render, like on the stack.) - // - // This case is always accompanied by a warning, but we still need to - // account for it. (There may be other cases that we haven't discovered, - // too.) - var offscreenInstance = parent.stateNode; - - if ( - offscreenInstance !== null && - !(offscreenInstance._visibility & OffscreenVisible) - ) { - isHidden = true; - } - } +var current = null; +var isRendering = false; +function getCurrentFiberOwnerNameInDevOrNull() { + { + if (current === null) { + return null; + } - node = parent; - parent = parent.return; - } + var owner = current._debugOwner; - if (isHidden && update !== null && node.tag === HostRoot) { - var root = node.stateNode; - markHiddenUpdate(root, update, lane); - } + if (owner != null) { + return getComponentNameFromOwner(owner); } + } - function getRootForUpdatedFiber(sourceFiber) { - // TODO: We will detect and infinite update loop and throw even if this fiber - // has already unmounted. This isn't really necessary but it happens to be the - // current behavior we've used for several release cycles. Consider not - // performing this check if the updated fiber already unmounted, since it's - // not possible for that to cause an infinite update loop. - throwIfInfiniteUpdateLoopDetected(); // When a setState happens, we must ensure the root is scheduled. Because - // update queues do not have a backpointer to the root, the only way to do - // this currently is to walk up the return path. This used to not be a big - // deal because we would have to walk up the return path to set - // the `childLanes`, anyway, but now those two traversals happen at - // different times. - // TODO: Consider adding a `root` backpointer on the update queue. + return null; +} - detectUpdateOnUnmountedFiber(sourceFiber, sourceFiber); - var node = sourceFiber; - var parent = node.return; +function getCurrentFiberStackInDev() { + { + if (current === null) { + return ''; + } // Safe because if current fiber exists, we are reconciling, + // and it is guaranteed to be the work-in-progress version. - while (parent !== null) { - detectUpdateOnUnmountedFiber(sourceFiber, node); - node = parent; - parent = node.return; - } - return node.tag === HostRoot ? node.stateNode : null; - } + return getStackByFiberInDevAndProd(current); + } +} - function detectUpdateOnUnmountedFiber(sourceFiber, parent) { - { - var alternate = parent.alternate; +function resetCurrentFiber() { + { + ReactSharedInternals.getCurrentStack = null; + current = null; + isRendering = false; + } +} +function setCurrentFiber(fiber) { + { + ReactSharedInternals.getCurrentStack = fiber === null ? null : getCurrentFiberStackInDev; + current = fiber; + isRendering = false; + } +} +function getCurrentFiber() { + { + return current; + } +} +function setIsRendering(rendering) { + { + isRendering = rendering; + } +} - if ( - alternate === null && - (parent.flags & (Placement | Hydrating)) !== NoFlags$1 - ) { - warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); - } +var ReactStrictModeWarnings = { + recordUnsafeLifecycleWarnings: function (fiber, instance) {}, + flushPendingUnsafeLifecycleWarnings: function () {}, + recordLegacyContextWarning: function (fiber, instance) {}, + flushLegacyContextWarning: function () {}, + discardPendingWarnings: function () {} +}; + +{ + var findStrictRoot = function (fiber) { + var maybeStrictRoot = null; + var node = fiber; + + while (node !== null) { + if (node.mode & StrictLegacyMode) { + maybeStrictRoot = node; } + + node = node.return; } - // there's only a single root, but we do support multi root apps, hence this - // extra complexity. But this module is optimized for the single root case. + return maybeStrictRoot; + }; - var firstScheduledRoot = null; - var lastScheduledRoot = null; // Used to prevent redundant mircotasks from being scheduled. + var setToSortedString = function (set) { + var array = []; + set.forEach(function (value) { + array.push(value); + }); + return array.sort().join(', '); + }; - var didScheduleMicrotask = false; // `act` "microtasks" are scheduled on the `act` queue instead of an actual - // microtask, so we have to dedupe those separately. This wouldn't be an issue - // if we required all `act` calls to be awaited, which we might in the future. + var pendingComponentWillMountWarnings = []; + var pendingUNSAFE_ComponentWillMountWarnings = []; + var pendingComponentWillReceivePropsWarnings = []; + var pendingUNSAFE_ComponentWillReceivePropsWarnings = []; + var pendingComponentWillUpdateWarnings = []; + var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about. - var didScheduleMicrotask_act = false; // Used to quickly bail out of flushSync if there's no sync work to do. + var didWarnAboutUnsafeLifecycles = new Set(); - var mightHavePendingSyncWork = false; - var isFlushingWork = false; - var currentEventTransitionLane = NoLane; - function ensureRootIsScheduled(root) { - // This function is called whenever a root receives an update. It does two - // things 1) it ensures the root is in the root schedule, and 2) it ensures - // there's a pending microtask to process the root schedule. - // - // Most of the actual scheduling logic does not happen until - // `scheduleTaskForRootDuringMicrotask` runs. - // Add the root to the schedule - if (root === lastScheduledRoot || root.next !== null); - else { - if (lastScheduledRoot === null) { - firstScheduledRoot = lastScheduledRoot = root; - } else { - lastScheduledRoot.next = root; - lastScheduledRoot = root; - } - } // Any time a root received an update, we set this to true until the next time - // we process the schedule. If it's false, then we can quickly exit flushSync - // without consulting the schedule. + ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function (fiber, instance) { + // Dedupe strategy: Warn once per component. + if (didWarnAboutUnsafeLifecycles.has(fiber.type)) { + return; + } - mightHavePendingSyncWork = true; // At the end of the current event, go through each of the roots and ensure - // there's a task scheduled for each one at the correct priority. + if (typeof instance.componentWillMount === 'function' && // Don't warn about react-lifecycles-compat polyfilled components. + instance.componentWillMount.__suppressDeprecationWarning !== true) { + pendingComponentWillMountWarnings.push(fiber); + } - if (ReactSharedInternals.actQueue !== null) { - // We're inside an `act` scope. - if (!didScheduleMicrotask_act) { - didScheduleMicrotask_act = true; - scheduleImmediateTask(processRootScheduleInMicrotask); - } - } else { - if (!didScheduleMicrotask) { - didScheduleMicrotask = true; - scheduleImmediateTask(processRootScheduleInMicrotask); - } - } + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillMount === 'function') { + pendingUNSAFE_ComponentWillMountWarnings.push(fiber); + } - if (!enableDeferRootSchedulingToMicrotask) { - // While this flag is disabled, we schedule the render task immediately - // instead of waiting a microtask. - // TODO: We need to land enableDeferRootSchedulingToMicrotask ASAP to - // unblock additional features we have planned. - scheduleTaskForRootDuringMicrotask(root, now$1()); - } + if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) { + pendingComponentWillReceivePropsWarnings.push(fiber); + } - if (ReactSharedInternals.isBatchingLegacy && root.tag === LegacyRoot) { - // Special `act` case: Record whenever a legacy update is scheduled. - ReactSharedInternals.didScheduleLegacyUpdate = true; - } + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber); } - function flushSyncWorkOnAllRoots() { - // This is allowed to be called synchronously, but the caller should check - // the execution context first. - flushSyncWorkAcrossRoots_impl(false); + + if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) { + pendingComponentWillUpdateWarnings.push(fiber); } - function flushSyncWorkOnLegacyRootsOnly() { - // This is allowed to be called synchronously, but the caller should check - // the execution context first. - { - flushSyncWorkAcrossRoots_impl(true); - } + + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillUpdate === 'function') { + pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber); } + }; - function flushSyncWorkAcrossRoots_impl(onlyLegacy) { - if (isFlushingWork) { - // Prevent reentrancy. - // TODO: Is this overly defensive? The callers must check the execution - // context first regardless. - return; - } + ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = function () { + // We do an initial pass to gather component names + var componentWillMountUniqueNames = new Set(); - if (!mightHavePendingSyncWork) { - // Fast path. There's no sync work to do. - return; - } // There may or may not be synchronous work scheduled. Let's check. + if (pendingComponentWillMountWarnings.length > 0) { + pendingComponentWillMountWarnings.forEach(function (fiber) { + componentWillMountUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillMountWarnings = []; + } - var didPerformSomeWork; - isFlushingWork = true; + var UNSAFE_componentWillMountUniqueNames = new Set(); - do { - didPerformSomeWork = false; - var root = firstScheduledRoot; - - while (root !== null) { - if (onlyLegacy && root.tag !== LegacyRoot); - else { - var workInProgressRoot = getWorkInProgressRoot(); - var workInProgressRootRenderLanes = - getWorkInProgressRootRenderLanes(); - var nextLanes = getNextLanes( - root, - root === workInProgressRoot - ? workInProgressRootRenderLanes - : NoLanes - ); + if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) { + pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) { + UNSAFE_componentWillMountUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillMountWarnings = []; + } - if (includesSyncLane(nextLanes)) { - // This root has pending sync work. Flush it now. - didPerformSomeWork = true; - performSyncWorkOnRoot(root, nextLanes); - } - } + var componentWillReceivePropsUniqueNames = new Set(); - root = root.next; - } - } while (didPerformSomeWork); + if (pendingComponentWillReceivePropsWarnings.length > 0) { + pendingComponentWillReceivePropsWarnings.forEach(function (fiber) { + componentWillReceivePropsUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillReceivePropsWarnings = []; + } + + var UNSAFE_componentWillReceivePropsUniqueNames = new Set(); - isFlushingWork = false; + if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) { + pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach(function (fiber) { + UNSAFE_componentWillReceivePropsUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillReceivePropsWarnings = []; } - function processRootScheduleInMicrotask() { - // This function is always called inside a microtask. It should never be - // called synchronously. - didScheduleMicrotask = false; + var componentWillUpdateUniqueNames = new Set(); - { - didScheduleMicrotask_act = false; - } // We'll recompute this as we iterate through all the roots and schedule them. - - mightHavePendingSyncWork = false; - var currentTime = now$1(); - var prev = null; - var root = firstScheduledRoot; - - while (root !== null) { - var next = root.next; - - if ( - currentEventTransitionLane !== NoLane && - shouldAttemptEagerTransition() - ) { - // A transition was scheduled during an event, but we're going to try to - // render it synchronously anyway. We do this during a popstate event to - // preserve the scroll position of the previous page. - upgradePendingLaneToSync(root, currentEventTransitionLane); - } - - var nextLanes = scheduleTaskForRootDuringMicrotask(root, currentTime); - - if (nextLanes === NoLane) { - // This root has no more pending work. Remove it from the schedule. To - // guard against subtle reentrancy bugs, this microtask is the only place - // we do this — you can add roots to the schedule whenever, but you can - // only remove them here. - // Null this out so we know it's been removed from the schedule. - root.next = null; - - if (prev === null) { - // This is the new head of the list - firstScheduledRoot = next; - } else { - prev.next = next; - } + if (pendingComponentWillUpdateWarnings.length > 0) { + pendingComponentWillUpdateWarnings.forEach(function (fiber) { + componentWillUpdateUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillUpdateWarnings = []; + } - if (next === null) { - // This is the new tail of the list - lastScheduledRoot = prev; - } - } else { - // This root still has work. Keep it in the list. - prev = root; + var UNSAFE_componentWillUpdateUniqueNames = new Set(); - if (includesSyncLane(nextLanes)) { - mightHavePendingSyncWork = true; - } - } + if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) { + pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) { + UNSAFE_componentWillUpdateUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillUpdateWarnings = []; + } // Finally, we flush all the warnings + // UNSAFE_ ones before the deprecated ones, since they'll be 'louder' - root = next; - } - currentEventTransitionLane = NoLane; // At the end of the microtask, flush any pending synchronous work. This has - // to come at the end, because it does actual rendering work that might throw. + if (UNSAFE_componentWillMountUniqueNames.size > 0) { + var sortedNames = setToSortedString(UNSAFE_componentWillMountUniqueNames); - flushSyncWorkOnAllRoots(); + error('Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '\nPlease update the following components: %s', sortedNames); } - function scheduleTaskForRootDuringMicrotask(root, currentTime) { - // This function is always called inside a microtask, or at the very end of a - // rendering task right before we yield to the main thread. It should never be - // called synchronously. - // - // TODO: Unless enableDeferRootSchedulingToMicrotask is off. We need to land - // that ASAP to unblock additional features we have planned. - // - // This function also never performs React work synchronously; it should - // only schedule work to be performed later, in a separate task or microtask. - // Check if any lanes are being starved by other work. If so, mark them as - // expired so we know to work on those next. - markStarvedLanesAsExpired(root, currentTime); // Determine the next lanes to work on, and their priority. - - var workInProgressRoot = getWorkInProgressRoot(); - var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); - var nextLanes = getNextLanes( - root, - root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes - ); - var existingCallbackNode = root.callbackNode; - - if ( - // Check if there's nothing to work on - nextLanes === NoLanes || // If this root is currently suspended and waiting for data to resolve, don't - // schedule a task to render it. We'll either wait for a ping, or wait to - // receive an update. - // - // Suspended render phase - (root === workInProgressRoot && isWorkLoopSuspendedOnData()) || // Suspended commit phase - root.cancelPendingCommit !== null - ) { - // Fast path: There's nothing to work on. - if (existingCallbackNode !== null) { - cancelCallback(existingCallbackNode); - } - - root.callbackNode = null; - root.callbackPriority = NoLane; - return NoLane; - } // Schedule a new callback in the host environment. + if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) { + var _sortedNames = setToSortedString(UNSAFE_componentWillReceivePropsUniqueNames); - if (includesSyncLane(nextLanes)) { - // Synchronous work is always flushed at the end of the microtask, so we - // don't need to schedule an additional task. - if (existingCallbackNode !== null) { - cancelCallback(existingCallbackNode); - } + error('Using UNSAFE_componentWillReceiveProps in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, " + 'refactor your code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n' + '\nPlease update the following components: %s', _sortedNames); + } - root.callbackPriority = SyncLane; - root.callbackNode = null; - return SyncLane; - } else { - // We use the highest priority lane to represent the priority of the callback. - var existingCallbackPriority = root.callbackPriority; - var newCallbackPriority = getHighestPriorityLane(nextLanes); - - if ( - newCallbackPriority === existingCallbackPriority && // Special case related to `act`. If the currently scheduled task is a - // Scheduler task, rather than an `act` task, cancel it and re-schedule - // on the `act` queue. - !( - ReactSharedInternals.actQueue !== null && - existingCallbackNode !== fakeActCallbackNode$1 - ) - ) { - // The priority hasn't changed. We can reuse the existing task. - return newCallbackPriority; - } else { - // Cancel the existing callback. We'll schedule a new one below. - cancelCallback(existingCallbackNode); - } + if (UNSAFE_componentWillUpdateUniqueNames.size > 0) { + var _sortedNames2 = setToSortedString(UNSAFE_componentWillUpdateUniqueNames); - var schedulerPriorityLevel; + error('Using UNSAFE_componentWillUpdate in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '\nPlease update the following components: %s', _sortedNames2); + } - switch (lanesToEventPriority(nextLanes)) { - case DiscreteEventPriority: - schedulerPriorityLevel = ImmediatePriority; - break; + if (componentWillMountUniqueNames.size > 0) { + var _sortedNames3 = setToSortedString(componentWillMountUniqueNames); - case ContinuousEventPriority: - schedulerPriorityLevel = UserBlockingPriority; - break; + warn('componentWillMount has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '* Rename componentWillMount to UNSAFE_componentWillMount to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames3); + } - case DefaultEventPriority: - schedulerPriorityLevel = NormalPriority$1; - break; + if (componentWillReceivePropsUniqueNames.size > 0) { + var _sortedNames4 = setToSortedString(componentWillReceivePropsUniqueNames); - case IdleEventPriority: - schedulerPriorityLevel = IdlePriority; - break; + warn('componentWillReceiveProps has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, refactor your " + 'code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n' + '* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames4); + } - default: - schedulerPriorityLevel = NormalPriority$1; - break; - } + if (componentWillUpdateUniqueNames.size > 0) { + var _sortedNames5 = setToSortedString(componentWillUpdateUniqueNames); - var newCallbackNode = scheduleCallback$2( - schedulerPriorityLevel, - performConcurrentWorkOnRoot.bind(null, root) - ); - root.callbackPriority = newCallbackPriority; - root.callbackNode = newCallbackNode; - return newCallbackPriority; - } + warn('componentWillUpdate has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames5); } + }; - function getContinuationForRoot(root, originalCallbackNode) { - // This is called at the end of `performConcurrentWorkOnRoot` to determine - // if we need to schedule a continuation task. - // - // Usually `scheduleTaskForRootDuringMicrotask` only runs inside a microtask; - // however, since most of the logic for determining if we need a continuation - // versus a new task is the same, we cheat a bit and call it here. This is - // only safe to do because we know we're at the end of the browser task. - // So although it's not an actual microtask, it might as well be. - scheduleTaskForRootDuringMicrotask(root, now$1()); + var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about. - if (root.callbackNode === originalCallbackNode) { - // The task node scheduled for this root is the same one that's - // currently executed. Need to return a continuation. - return performConcurrentWorkOnRoot.bind(null, root); - } + var didWarnAboutLegacyContext = new Set(); - return null; - } - var fakeActCallbackNode$1 = {}; + ReactStrictModeWarnings.recordLegacyContextWarning = function (fiber, instance) { + var strictRoot = findStrictRoot(fiber); - function scheduleCallback$2(priorityLevel, callback) { - if (ReactSharedInternals.actQueue !== null) { - // Special case: We're inside an `act` scope (a testing utility). - // Instead of scheduling work in the host environment, add it to a - // fake internal queue that's managed by the `act` implementation. - ReactSharedInternals.actQueue.push(callback); - return fakeActCallbackNode$1; - } else { - return scheduleCallback$3(priorityLevel, callback); - } - } + if (strictRoot === null) { + error('Expected to find a StrictMode component in a strict mode tree. ' + 'This error is likely caused by a bug in React. Please file an issue.'); - function cancelCallback(callbackNode) { - if (callbackNode === fakeActCallbackNode$1); - else if (callbackNode !== null) { - cancelCallback$1(callbackNode); - } - } + return; + } // Dedup strategy: Warn once per component. - function scheduleImmediateTask(cb) { - if (ReactSharedInternals.actQueue !== null) { - // Special case: Inside an `act` scope, we push microtasks to the fake `act` - // callback queue. This is because we currently support calling `act` - // without awaiting the result. The plan is to deprecate that, and require - // that you always await the result so that the microtasks have a chance to - // run. But it hasn't happened yet. - ReactSharedInternals.actQueue.push(function () { - cb(); - return null; - }); - } // TODO: Can we land supportsMicrotasks? Which environments don't support it? - // Alternatively, can we move this check to the host config? - - if (supportsMicrotasks) { - scheduleMicrotask(function () { - // In Safari, appending an iframe forces microtasks to run. - // https://github.com/facebook/react/issues/22459 - // We don't support running callbacks in the middle of render - // or commit so we need to check against that. - var executionContext = getExecutionContext(); - - if ( - (executionContext & (RenderContext | CommitContext)) !== - NoContext - ) { - // Note that this would still prematurely flush the callbacks - // if this happens outside render or commit phase (e.g. in an event). - // Intentionally using a macrotask instead of a microtask here. This is - // wrong semantically but it prevents an infinite loop. The bug is - // Safari's, not ours, so we just do our best to not crash even though - // the behavior isn't completely correct. - scheduleCallback$3(ImmediatePriority, cb); - return; - } - cb(); - }); - } else { - // If microtasks are not supported, use Scheduler. - scheduleCallback$3(ImmediatePriority, cb); - } + if (didWarnAboutLegacyContext.has(fiber.type)) { + return; } - function requestTransitionLane( // This argument isn't used, it's only here to encourage the caller to - // check that it's inside a transition before calling this function. - // TODO: Make this non-nullable. Requires a tweak to useOptimistic. - transition - ) { - // The algorithm for assigning an update to a lane should be stable for all - // updates at the same priority within the same event. To do this, the - // inputs to the algorithm must be the same. - // - // The trick we use is to cache the first of each of these inputs within an - // event. Then reset the cached values once we can be sure the event is - // over. Our heuristic for that is whenever we enter a concurrent work loop. - if (currentEventTransitionLane === NoLane) { - // All transitions within the same event are assigned the same lane. - currentEventTransitionLane = claimNextTransitionLane(); + var warningsForRoot = pendingLegacyContextWarning.get(strictRoot); + + if (fiber.type.contextTypes != null || fiber.type.childContextTypes != null || instance !== null && typeof instance.getChildContext === 'function') { + if (warningsForRoot === undefined) { + warningsForRoot = []; + pendingLegacyContextWarning.set(strictRoot, warningsForRoot); } - return currentEventTransitionLane; + warningsForRoot.push(fiber); } + }; - // transition updates that occur while the async action is still in progress - // are treated as part of the action. - // - // The ideal behavior would be to treat each async function as an independent - // action. However, without a mechanism like AsyncContext, we can't tell which - // action an update corresponds to. So instead, we entangle them all into one. - // The listeners to notify once the entangled scope completes. - - var currentEntangledListeners = null; // The number of pending async actions in the entangled scope. - - var currentEntangledPendingCount = 0; // The transition lane shared by all updates in the entangled scope. - - var currentEntangledLane = NoLane; // A thenable that resolves when the entangled scope completes. It does not - // resolve to a particular value because it's only used for suspending the UI - // until the async action scope has completed. - - var currentEntangledActionThenable = null; - function entangleAsyncAction(transition, thenable) { - // `thenable` is the return value of the async action scope function. Create - // a combined thenable that resolves once every entangled scope function - // has finished. - if (currentEntangledListeners === null) { - // There's no outer async action scope. Create a new one. - var entangledListeners = (currentEntangledListeners = []); - currentEntangledPendingCount = 0; - currentEntangledLane = requestTransitionLane(); - var entangledThenable = { - status: "pending", - value: undefined, - then: function (resolve) { - entangledListeners.push(resolve); - } - }; - currentEntangledActionThenable = entangledThenable; + ReactStrictModeWarnings.flushLegacyContextWarning = function () { + pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) { + if (fiberArray.length === 0) { + return; } - currentEntangledPendingCount++; - thenable.then(pingEngtangledActionScope, pingEngtangledActionScope); - return thenable; - } - - function pingEngtangledActionScope() { - if ( - currentEntangledListeners !== null && - --currentEntangledPendingCount === 0 - ) { - // All the actions have finished. Close the entangled async action scope - // and notify all the listeners. - if (currentEntangledActionThenable !== null) { - var fulfilledThenable = currentEntangledActionThenable; - fulfilledThenable.status = "fulfilled"; - } + var firstFiber = fiberArray[0]; + var uniqueNames = new Set(); + fiberArray.forEach(function (fiber) { + uniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutLegacyContext.add(fiber.type); + }); + var sortedNames = setToSortedString(uniqueNames); - var listeners = currentEntangledListeners; - currentEntangledListeners = null; - currentEntangledLane = NoLane; - currentEntangledActionThenable = null; + try { + setCurrentFiber(firstFiber); - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; - listener(); - } + error('Legacy context API has been detected within a strict-mode tree.' + '\n\nThe old API will be supported in all 16.x releases, but applications ' + 'using it should migrate to the new version.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here: https://react.dev/link/legacy-context', sortedNames); + } finally { + resetCurrentFiber(); } - } + }); + }; + + ReactStrictModeWarnings.discardPendingWarnings = function () { + pendingComponentWillMountWarnings = []; + pendingUNSAFE_ComponentWillMountWarnings = []; + pendingComponentWillReceivePropsWarnings = []; + pendingUNSAFE_ComponentWillReceivePropsWarnings = []; + pendingComponentWillUpdateWarnings = []; + pendingUNSAFE_ComponentWillUpdateWarnings = []; + pendingLegacyContextWarning = new Map(); + }; +} - function chainThenableValue(thenable, result) { - // Equivalent to: Promise.resolve(thenable).then(() => result), except we can - // cheat a bit since we know that that this thenable is only ever consumed - // by React. - // - // We don't technically require promise support on the client yet, hence this - // extra code. - var listeners = []; - var thenableWithOverride = { - status: "pending", - value: null, - reason: null, - then: function (resolve) { - listeners.push(resolve); - } - }; - thenable.then( - function (value) { - var fulfilledThenable = thenableWithOverride; - fulfilledThenable.status = "fulfilled"; - fulfilledThenable.value = result; - - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; - listener(result); - } - }, - function (error) { - var rejectedThenable = thenableWithOverride; - rejectedThenable.status = "rejected"; - rejectedThenable.reason = error; - - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; // This is a perf hack where we call the `onFulfill` ping function - // instead of `onReject`, because we know that React is the only - // consumer of these promises, and it passes the same listener to both. - // We also know that it will read the error directly off the - // `.reason` field. - - listener(undefined); - } - } - ); - return thenableWithOverride; - } - function peekEntangledActionLane() { - return currentEntangledLane; - } - function peekEntangledActionThenable() { - return currentEntangledActionThenable; - } +function getThenablesFromState(state) { + { + var devState = state; + return devState.thenables; + } +} // An error that is thrown (e.g. by `use`) to trigger Suspense. If we +// detect this is caught by userspace, we'll log a warning in development. - var UpdateState = 0; - var ReplaceState = 1; - var ForceUpdate = 2; - var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`. - // It should only be read right after calling `processUpdateQueue`, via - // `checkHasForceUpdateAfterProcessing`. - var hasForceUpdate = false; - var didWarnUpdateInsideUpdate; - var currentlyProcessingQueue; +var SuspenseException = new Error("Suspense Exception: This is not a real error! It's an implementation " + 'detail of `use` to interrupt the current render. You must either ' + 'rethrow it immediately, or move the `use` call outside of the ' + '`try/catch` block. Capturing without rethrowing will lead to ' + 'unexpected behavior.\n\n' + 'To handle async errors, wrap your component in an error boundary, or ' + "call the promise's `.catch` method and pass the result to `use`"); +var SuspenseyCommitException = new Error('Suspense Exception: This is not a real error, and should not leak into ' + "userspace. If you're seeing this, it's likely a bug in React."); // This is a noop thenable that we use to trigger a fallback in throwException. +// TODO: It would be better to refactor throwException into multiple functions +// so we can trigger a fallback directly without having to check the type. But +// for now this will do. +var noopSuspenseyCommitThenable = { + then: function () { { - didWarnUpdateInsideUpdate = false; - currentlyProcessingQueue = null; - } - - function initializeUpdateQueue(fiber) { - var queue = { - baseState: fiber.memoizedState, - firstBaseUpdate: null, - lastBaseUpdate: null, - shared: { - pending: null, - lanes: NoLanes, - hiddenCallbacks: null - }, - callbacks: null - }; - fiber.updateQueue = queue; - } - function cloneUpdateQueue(current, workInProgress) { - // Clone the update queue from current. Unless it's already a clone. - var queue = workInProgress.updateQueue; - var currentQueue = current.updateQueue; - - if (queue === currentQueue) { - var clone = { - baseState: currentQueue.baseState, - firstBaseUpdate: currentQueue.firstBaseUpdate, - lastBaseUpdate: currentQueue.lastBaseUpdate, - shared: currentQueue.shared, - callbacks: null - }; - workInProgress.updateQueue = clone; - } - } - function createUpdate(lane) { - var update = { - lane: lane, - tag: UpdateState, - payload: null, - callback: null, - next: null - }; - return update; - } - function enqueueUpdate(fiber, update, lane) { - var updateQueue = fiber.updateQueue; + error('Internal React error: A listener was unexpectedly attached to a ' + '"noop" thenable. This is a bug in React. Please file an issue.'); + } + } +}; +function createThenableState() { + // The ThenableState is created the first time a component suspends. If it + // suspends again, we'll reuse the same state. + { + return { + didWarnAboutUncachedPromise: false, + thenables: [] + }; + } +} +function isThenableResolved(thenable) { + var status = thenable.status; + return status === 'fulfilled' || status === 'rejected'; +} - if (updateQueue === null) { - // Only occurs if the fiber has been unmounted. - return null; - } +function noop() {} - var sharedQueue = updateQueue.shared; +function trackUsedThenable(thenableState, thenable, index) { + if (ReactSharedInternals.actQueue !== null) { + ReactSharedInternals.didUsePromise = true; + } + var trackedThenables = getThenablesFromState(thenableState); + var previous = trackedThenables[index]; + + if (previous === undefined) { + trackedThenables.push(thenable); + } else { + if (previous !== thenable) { + // Reuse the previous thenable, and drop the new one. We can assume + // they represent the same value, because components are idempotent. { - if ( - currentlyProcessingQueue === sharedQueue && - !didWarnUpdateInsideUpdate - ) { - var componentName = getComponentNameFromFiber(fiber); + var thenableStateDev = thenableState; - error( - "An update (setState, replaceState, or forceUpdate) was scheduled " + - "from inside an update function. Update functions should be pure, " + - "with zero side-effects. Consider using componentDidUpdate or a " + - "callback.\n\nPlease update the following component: %s", - componentName - ); + if (!thenableStateDev.didWarnAboutUncachedPromise) { + // We should only warn the first time an uncached thenable is + // discovered per component, because if there are multiple, the + // subsequent ones are likely derived from the first. + // + // We track this on the thenableState instead of deduping using the + // component name like we usually do, because in the case of a + // promise-as-React-node, the owner component is likely different from + // the parent that's currently being reconciled. We'd have to track + // the owner using state, which we're trying to move away from. Though + // since this is dev-only, maybe that'd be OK. + // + // However, another benefit of doing it this way is we might + // eventually have a thenableState per memo/Forget boundary instead + // of per component, so this would allow us to have more + // granular warnings. + thenableStateDev.didWarnAboutUncachedPromise = true; // TODO: This warning should link to a corresponding docs page. - didWarnUpdateInsideUpdate = true; + error('A component was suspended by an uncached promise. Creating ' + 'promises inside a Client Component or hook is not yet ' + 'supported, except via a Suspense-compatible library or framework.'); } - } + } // Avoid an unhandled rejection errors for the Promises that we'll + // intentionally ignore. - if (isUnsafeClassRenderPhaseUpdate()) { - // This is an unsafe render phase update. Add directly to the update - // queue so we can process it immediately during the current render. - var pending = sharedQueue.pending; - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + thenable.then(noop, noop); + thenable = previous; + } + } // We use an expando to track the status and result of a thenable so that we + // can synchronously unwrap the value. Think of this as an extension of the + // Promise API, or a custom interface that is a superset of Thenable. + // + // If the thenable doesn't have a status, set it to "pending" and attach + // a listener that will update its status and result when it resolves. - sharedQueue.pending = update; // Update the childLanes even though we're most likely already rendering - // this fiber. This is for backwards compatibility in the case where you - // update a different component during render phase than the one that is - // currently renderings (a pattern that is accompanied by a warning). - return unsafe_markUpdateLaneFromFiberToRoot(fiber, lane); - } else { - return enqueueConcurrentClassUpdate(fiber, sharedQueue, update, lane); + switch (thenable.status) { + case 'fulfilled': + { + var fulfilledValue = thenable.value; + return fulfilledValue; } - } - function entangleTransitions(root, fiber, lane) { - var updateQueue = fiber.updateQueue; - if (updateQueue === null) { - // Only occurs if the fiber has been unmounted. - return; + case 'rejected': + { + var rejectedError = thenable.reason; + checkIfUseWrappedInAsyncCatch(rejectedError); + throw rejectedError; } - var sharedQueue = updateQueue.shared; + default: + { + if (typeof thenable.status === 'string') { + // Only instrument the thenable if the status if not defined. If + // it's defined, but an unknown value, assume it's been instrumented by + // some custom userspace implementation. We treat it as "pending". + // Attach a dummy listener, to ensure that any lazy initialization can + // happen. Flight lazily parses JSON when the value is actually awaited. + thenable.then(noop, noop); + } else { + // This is an uncached thenable that we haven't seen before. + // Detect infinite ping loops caused by uncached promises. + var root = getWorkInProgressRoot(); - if (isTransitionLane(lane)) { - var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must - // have finished. We can remove them from the shared queue, which represents - // a superset of the actually pending lanes. In some cases we may entangle - // more than we need to, but that's OK. In fact it's worse if we *don't* - // entangle when we should. + if (root !== null && root.shellSuspendCounter > 100) { + // This root has suspended repeatedly in the shell without making any + // progress (i.e. committing something). This is highly suggestive of + // an infinite ping loop, often caused by an accidental Async Client + // Component. + // + // During a transition, we can suspend the work loop until the promise + // to resolve, but this is a sync render, so that's not an option. We + // also can't show a fallback, because none was provided. So our last + // resort is to throw an error. + // + // TODO: Remove this error in a future release. Other ways of handling + // this case include forcing a concurrent render, or putting the whole + // root into offscreen mode. + throw new Error('async/await is not yet supported in Client Components, only ' + 'Server Components. This error is often caused by accidentally ' + "adding `'use client'` to a module that was originally written " + 'for the server.'); + } - queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + var pendingThenable = thenable; + pendingThenable.status = 'pending'; + pendingThenable.then(function (fulfilledValue) { + if (thenable.status === 'pending') { + var fulfilledThenable = thenable; + fulfilledThenable.status = 'fulfilled'; + fulfilledThenable.value = fulfilledValue; + } + }, function (error) { + if (thenable.status === 'pending') { + var rejectedThenable = thenable; + rejectedThenable.status = 'rejected'; + rejectedThenable.reason = error; + } + }); + } // Check one more time in case the thenable resolved synchronously. - var newQueueLanes = mergeLanes(queueLanes, lane); - sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if - // the lane finished since the last time we entangled it. So we need to - // entangle it again, just to be sure. - markRootEntangled(root, newQueueLanes); - } - } - function enqueueCapturedUpdate(workInProgress, capturedUpdate) { - // Captured updates are updates that are thrown by a child during the render - // phase. They should be discarded if the render is aborted. Therefore, - // we should only put them on the work-in-progress queue, not the current one. - var queue = workInProgress.updateQueue; // Check if the work-in-progress queue is a clone. + switch (thenable.status) { + case 'fulfilled': + { + var fulfilledThenable = thenable; + return fulfilledThenable.value; + } - var current = workInProgress.alternate; + case 'rejected': + { + var rejectedThenable = thenable; + var _rejectedError = rejectedThenable.reason; + checkIfUseWrappedInAsyncCatch(_rejectedError); + throw _rejectedError; + } + } // Suspend. + // + // Throwing here is an implementation detail that allows us to unwind the + // call stack. But we shouldn't allow it to leak into userspace. Throw an + // opaque placeholder value instead of the actual thenable. If it doesn't + // get captured by the work loop, log a warning, because that means + // something in userspace must have caught it. - if (current !== null) { - var currentQueue = current.updateQueue; - - if (queue === currentQueue) { - // The work-in-progress queue is the same as current. This happens when - // we bail out on a parent fiber that then captures an error thrown by - // a child. Since we want to append the update only to the work-in - // -progress queue, we need to clone the updates. We usually clone during - // processUpdateQueue, but that didn't happen in this case because we - // skipped over the parent when we bailed out. - var newFirst = null; - var newLast = null; - var firstBaseUpdate = queue.firstBaseUpdate; - - if (firstBaseUpdate !== null) { - // Loop through the updates and clone them. - var update = firstBaseUpdate; - do { - var clone = { - lane: update.lane, - tag: update.tag, - payload: update.payload, - // When this update is rebased, we should not fire its - // callback again. - callback: null, - next: null - }; + suspendedThenable = thenable; - if (newLast === null) { - newFirst = newLast = clone; - } else { - newLast.next = clone; - newLast = clone; - } // $FlowFixMe[incompatible-type] we bail out when we get a null + { + needsToResetSuspendedThenableDEV = true; + } - update = update.next; - } while (update !== null); // Append the captured update the end of the cloned list. + throw SuspenseException; + } + } +} +// passed to the rest of the Suspense implementation — which, for historical +// reasons, expects to receive a thenable. + +var suspendedThenable = null; +var needsToResetSuspendedThenableDEV = false; +function getSuspendedThenable() { + // This is called right after `use` suspends by throwing an exception. `use` + // throws an opaque value instead of the thenable itself so that it can't be + // caught in userspace. Then the work loop accesses the actual thenable using + // this function. + if (suspendedThenable === null) { + throw new Error('Expected a suspended thenable. This is a bug in React. Please file ' + 'an issue.'); + } + + var thenable = suspendedThenable; + suspendedThenable = null; + + { + needsToResetSuspendedThenableDEV = false; + } + + return thenable; +} +function checkIfUseWrappedInTryCatch() { + { + // This was set right before SuspenseException was thrown, and it should + // have been cleared when the exception was handled. If it wasn't, + // it must have been caught by userspace. + if (needsToResetSuspendedThenableDEV) { + needsToResetSuspendedThenableDEV = false; + return true; + } + } - if (newLast === null) { - newFirst = newLast = capturedUpdate; - } else { - newLast.next = capturedUpdate; - newLast = capturedUpdate; - } - } else { - // There are no base updates. - newFirst = newLast = capturedUpdate; - } + return false; +} +function checkIfUseWrappedInAsyncCatch(rejectedReason) { + // This check runs in prod, too, because it prevents a more confusing + // downstream error, where SuspenseException is caught by a promise and + // thrown asynchronously. + // TODO: Another way to prevent SuspenseException from leaking into an async + // execution context is to check the dispatcher every time `use` is called, + // or some equivalent. That might be preferable for other reasons, too, since + // it matches how we prevent similar mistakes for other hooks. + if (rejectedReason === SuspenseException) { + throw new Error('Hooks are not supported inside an async component. This ' + "error is often caused by accidentally adding `'use client'` " + 'to a module that was originally written for the server.'); + } +} - queue = { - baseState: currentQueue.baseState, - firstBaseUpdate: newFirst, - lastBaseUpdate: newLast, - shared: currentQueue.shared, - callbacks: currentQueue.callbacks - }; - workInProgress.updateQueue = queue; - return; - } - } // Append the update to the end of the list. +var thenableState$1 = null; +var thenableIndexCounter$1 = 0; + +function mergeDebugInfo(outer, inner) { + + if (inner == null) { + return outer; + } else if (outer === null) { + return inner; + } else { + // If we have two debugInfo, we need to create a new one. This makes the array no longer + // live so we'll miss any future updates if we received more so ideally we should always + // do this after both have fully resolved/unsuspended. + return outer.concat(inner); + } +} - var lastBaseUpdate = queue.lastBaseUpdate; +var didWarnAboutMaps; +var didWarnAboutGenerators; +var ownerHasKeyUseWarning; +var ownerHasFunctionTypeWarning; +var ownerHasSymbolTypeWarning; - if (lastBaseUpdate === null) { - queue.firstBaseUpdate = capturedUpdate; - } else { - lastBaseUpdate.next = capturedUpdate; - } +var warnForMissingKey = function (child, returnFiber) {}; - queue.lastBaseUpdate = capturedUpdate; - } +{ + didWarnAboutMaps = false; + didWarnAboutGenerators = false; + /** + * Warn if there's no key explicitly set on dynamic arrays of children or + * object keys are not valid. This allows us to keep track of children between + * updates. + */ - function getStateFromUpdate( - workInProgress, - queue, - update, - prevState, - nextProps, - instance - ) { - switch (update.tag) { - case ReplaceState: { - var payload = update.payload; + ownerHasKeyUseWarning = {}; + ownerHasFunctionTypeWarning = {}; + ownerHasSymbolTypeWarning = {}; - if (typeof payload === "function") { - // Updater function - { - enterDisallowedContextReadInDEV(); - } + warnForMissingKey = function (child, returnFiber) { + if (child === null || typeof child !== 'object') { + return; + } - var nextState = payload.call(instance, prevState, nextProps); + if (!child._store || child._store.validated || child.key != null) { + return; + } - { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); + if (typeof child._store !== 'object') { + throw new Error('React Component in warnForMissingKey should have a _store. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } // $FlowFixMe[cannot-write] unable to narrow type from mixed to writable object - try { - payload.call(instance, prevState, nextProps); - } finally { - setIsStrictModeForDevtools(false); - } - } - exitDisallowedContextReadInDEV(); - } + child._store.validated = true; + var componentName = getComponentNameFromFiber(returnFiber) || 'Component'; - return nextState; - } // State object + if (ownerHasKeyUseWarning[componentName]) { + return; + } - return payload; - } + ownerHasKeyUseWarning[componentName] = true; - case CaptureUpdate: { - workInProgress.flags = - (workInProgress.flags & ~ShouldCapture) | DidCapture; - } - // Intentional fallthrough + error('Each child in a list should have a unique ' + '"key" prop. See https://react.dev/link/warning-keys for ' + 'more information.'); + }; +} - case UpdateState: { - var _payload = update.payload; - var partialState; +function unwrapThenable(thenable) { + var index = thenableIndexCounter$1; + thenableIndexCounter$1 += 1; - if (typeof _payload === "function") { - // Updater function - { - enterDisallowedContextReadInDEV(); - } + if (thenableState$1 === null) { + thenableState$1 = createThenableState(); + } - partialState = _payload.call(instance, prevState, nextProps); + return trackUsedThenable(thenableState$1, thenable, index); +} - { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); +function coerceRef(returnFiber, current, workInProgress, element) { + var ref; - try { - _payload.call(instance, prevState, nextProps); - } finally { - setIsStrictModeForDevtools(false); - } - } + { + // Old behavior. + ref = element.ref; + } // TODO: If enableRefAsProp is on, we shouldn't use the `ref` field. We + // should always read the ref from the prop. - exitDisallowedContextReadInDEV(); - } - } else { - // Partial state object - partialState = _payload; - } - if (partialState === null || partialState === undefined) { - // Null and undefined are treated as no-ops. - return prevState; - } // Merge the partial state and the previous state. + workInProgress.ref = ref; +} - return assign({}, prevState, partialState); - } +function throwOnInvalidObjectType(returnFiber, newChild) { + // $FlowFixMe[method-unbinding] + var childString = Object.prototype.toString.call(newChild); + throw new Error("Objects are not valid as a React child (found: " + (childString === '[object Object]' ? 'object with keys {' + Object.keys(newChild).join(', ') + '}' : childString) + "). " + 'If you meant to render a collection of children, use an array ' + 'instead.'); +} - case ForceUpdate: { - hasForceUpdate = true; - return prevState; - } - } +function warnOnFunctionType(returnFiber, invalidChild) { + { + var parentName = getComponentNameFromFiber(returnFiber) || 'Component'; - return prevState; + if (ownerHasFunctionTypeWarning[parentName]) { + return; } - var didReadFromEntangledAsyncAction = false; // Each call to processUpdateQueue should be accompanied by a call to this. It's - // only in a separate function because in updateHostRoot, it must happen after - // all the context stacks have been pushed to, to prevent a stack mismatch. A - // bit unfortunate. - - function suspendIfUpdateReadFromEntangledAsyncAction() { - // Check if this update is part of a pending async action. If so, we'll - // need to suspend until the action has finished, so that it's batched - // together with future updates in the same action. - // TODO: Once we support hooks inside useMemo (or an equivalent - // memoization boundary like Forget), hoist this logic so that it only - // suspends if the memo boundary produces a new value. - if (didReadFromEntangledAsyncAction) { - var entangledActionThenable = peekEntangledActionThenable(); + ownerHasFunctionTypeWarning[parentName] = true; + var name = invalidChild.displayName || invalidChild.name || 'Component'; - if (entangledActionThenable !== null) { - // TODO: Instead of the throwing the thenable directly, throw a - // special object like `use` does so we can detect if it's captured - // by userspace. - throw entangledActionThenable; - } - } + if (returnFiber.tag === HostRoot) { + error('Functions are not valid as a React child. This may happen if ' + 'you return %s instead of <%s /> from render. ' + 'Or maybe you meant to call this function rather than return it.\n' + ' root.render(%s)', name, name, name); + } else { + error('Functions are not valid as a React child. This may happen if ' + 'you return %s instead of <%s /> from render. ' + 'Or maybe you meant to call this function rather than return it.\n' + ' <%s>{%s}', name, name, parentName, name, parentName); } - function processUpdateQueue(workInProgress, props, instance, renderLanes) { - didReadFromEntangledAsyncAction = false; // This is always non-null on a ClassComponent or HostRoot + } +} - var queue = workInProgress.updateQueue; - hasForceUpdate = false; +function warnOnSymbolType(returnFiber, invalidChild) { + { + var parentName = getComponentNameFromFiber(returnFiber) || 'Component'; - { - currentlyProcessingQueue = queue.shared; - } + if (ownerHasSymbolTypeWarning[parentName]) { + return; + } - var firstBaseUpdate = queue.firstBaseUpdate; - var lastBaseUpdate = queue.lastBaseUpdate; // Check if there are pending updates. If so, transfer them to the base queue. + ownerHasSymbolTypeWarning[parentName] = true; // eslint-disable-next-line react-internal/safe-string-coercion - var pendingQueue = queue.shared.pending; + var name = String(invalidChild); - if (pendingQueue !== null) { - queue.shared.pending = null; // The pending queue is circular. Disconnect the pointer between first - // and last so that it's non-circular. + if (returnFiber.tag === HostRoot) { + error('Symbols are not valid as a React child.\n' + ' root.render(%s)', name); + } else { + error('Symbols are not valid as a React child.\n' + ' <%s>%s', parentName, name, parentName); + } + } +} - var lastPendingUpdate = pendingQueue; - var firstPendingUpdate = lastPendingUpdate.next; - lastPendingUpdate.next = null; // Append pending updates to base queue +function resolveLazy(lazyType) { + var payload = lazyType._payload; + var init = lazyType._init; + return init(payload); +} // This wrapper function exists because I expect to clone the code in each path +// to be able to optimize each path individually by branching early. This needs +// a compiler or we can do it manually. Helpers that don't need this branching +// live outside of this function. - if (lastBaseUpdate === null) { - firstBaseUpdate = firstPendingUpdate; - } else { - lastBaseUpdate.next = firstPendingUpdate; - } - lastBaseUpdate = lastPendingUpdate; // If there's a current queue, and it's different from the base queue, then - // we need to transfer the updates to that queue, too. Because the base - // queue is a singly-linked list with no cycles, we can append to both - // lists and take advantage of structural sharing. - // TODO: Pass `current` as argument +function createChildReconciler(shouldTrackSideEffects) { + function deleteChild(returnFiber, childToDelete) { + if (!shouldTrackSideEffects) { + // Noop. + return; + } - var current = workInProgress.alternate; + var deletions = returnFiber.deletions; - if (current !== null) { - // This is always non-null on a ClassComponent or HostRoot - var currentQueue = current.updateQueue; - var currentLastBaseUpdate = currentQueue.lastBaseUpdate; + if (deletions === null) { + returnFiber.deletions = [childToDelete]; + returnFiber.flags |= ChildDeletion; + } else { + deletions.push(childToDelete); + } + } - if (currentLastBaseUpdate !== lastBaseUpdate) { - if (currentLastBaseUpdate === null) { - currentQueue.firstBaseUpdate = firstPendingUpdate; - } else { - currentLastBaseUpdate.next = firstPendingUpdate; - } + function deleteRemainingChildren(returnFiber, currentFirstChild) { + if (!shouldTrackSideEffects) { + // Noop. + return null; + } // TODO: For the shouldClone case, this could be micro-optimized a bit by + // assuming that after the first child we've already added everything. - currentQueue.lastBaseUpdate = lastPendingUpdate; - } - } - } // These values may change as we process the queue. - if (firstBaseUpdate !== null) { - // Iterate through the list of updates to compute the result. - var newState = queue.baseState; // TODO: Don't need to accumulate this. Instead, we can remove renderLanes - // from the original lanes. - - var newLanes = NoLanes; - var newBaseState = null; - var newFirstBaseUpdate = null; - var newLastBaseUpdate = null; - var update = firstBaseUpdate; + var childToDelete = currentFirstChild; - do { - // An extra OffscreenLane bit is added to updates that were made to - // a hidden tree, so that we can distinguish them from updates that were - // already there when the tree was hidden. - var updateLane = removeLanes(update.lane, OffscreenLane); - var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then - // it's not a "base" update and we should disregard the extra base lanes - // that were added to renderLanes when we entered the Offscreen tree. - - var shouldSkipUpdate = isHiddenUpdate - ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) - : !isSubsetOfLanes(renderLanes, updateLane); - - if (shouldSkipUpdate) { - // Priority is insufficient. Skip this update. If this is the first - // skipped update, the previous update/state is the new base - // update/state. - var clone = { - lane: updateLane, - tag: update.tag, - payload: update.payload, - callback: update.callback, - next: null - }; + while (childToDelete !== null) { + deleteChild(returnFiber, childToDelete); + childToDelete = childToDelete.sibling; + } - if (newLastBaseUpdate === null) { - newFirstBaseUpdate = newLastBaseUpdate = clone; - newBaseState = newState; - } else { - newLastBaseUpdate = newLastBaseUpdate.next = clone; - } // Update the remaining priority in the queue. + return null; + } - newLanes = mergeLanes(newLanes, updateLane); - } else { - // This update does have sufficient priority. - // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - if ( - updateLane !== NoLane && - updateLane === peekEntangledActionLane() - ) { - didReadFromEntangledAsyncAction = true; - } + function mapRemainingChildren(currentFirstChild) { + // Add the remaining children to a temporary map so that we can find them by + // keys quickly. Implicit (null) keys get added to this set with their index + // instead. + var existingChildren = new Map(); + var existingChild = currentFirstChild; - if (newLastBaseUpdate !== null) { - var _clone = { - // This update is going to be committed so we never want uncommit - // it. Using NoLane works because 0 is a subset of all bitmasks, so - // this will never be skipped by the check above. - lane: NoLane, - tag: update.tag, - payload: update.payload, - // When this update is rebased, we should not fire its - // callback again. - callback: null, - next: null - }; - newLastBaseUpdate = newLastBaseUpdate.next = _clone; - } // Process this update. - - newState = getStateFromUpdate( - workInProgress, - queue, - update, - newState, - props, - instance - ); - var callback = update.callback; + while (existingChild !== null) { + if (existingChild.key !== null) { + existingChildren.set(existingChild.key, existingChild); + } else { + existingChildren.set(existingChild.index, existingChild); + } - if (callback !== null) { - workInProgress.flags |= Callback; + existingChild = existingChild.sibling; + } - if (isHiddenUpdate) { - workInProgress.flags |= Visibility; - } + return existingChildren; + } - var callbacks = queue.callbacks; + function useFiber(fiber, pendingProps) { + // We currently set sibling to null and index to 0 here because it is easy + // to forget to do before returning it. E.g. for the single child case. + var clone = createWorkInProgress(fiber, pendingProps); + clone.index = 0; + clone.sibling = null; + return clone; + } - if (callbacks === null) { - queue.callbacks = [callback]; - } else { - callbacks.push(callback); - } - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null + function placeChild(newFiber, lastPlacedIndex, newIndex) { + newFiber.index = newIndex; - update = update.next; + if (!shouldTrackSideEffects) { + // During hydration, the useId algorithm needs to know which fibers are + // part of a list of children (arrays, iterators). + newFiber.flags |= Forked; + return lastPlacedIndex; + } - if (update === null) { - pendingQueue = queue.shared.pending; + var current = newFiber.alternate; - if (pendingQueue === null) { - break; - } else { - // An update was scheduled from inside a reducer. Add the new - // pending updates to the end of the list and keep processing. - var _lastPendingUpdate = pendingQueue; // Intentionally unsound. Pending updates form a circular list, but we - // unravel them when transferring them to the base queue. - - var _firstPendingUpdate = _lastPendingUpdate.next; - _lastPendingUpdate.next = null; - update = _firstPendingUpdate; - queue.lastBaseUpdate = _lastPendingUpdate; - queue.shared.pending = null; - } - } - } while (true); + if (current !== null) { + var oldIndex = current.index; - if (newLastBaseUpdate === null) { - newBaseState = newState; - } + if (oldIndex < lastPlacedIndex) { + // This is a move. + newFiber.flags |= Placement | PlacementDEV; + return lastPlacedIndex; + } else { + // This item can stay in place. + return oldIndex; + } + } else { + // This is an insertion. + newFiber.flags |= Placement | PlacementDEV; + return lastPlacedIndex; + } + } - queue.baseState = newBaseState; - queue.firstBaseUpdate = newFirstBaseUpdate; - queue.lastBaseUpdate = newLastBaseUpdate; + function placeSingleChild(newFiber) { + // This is simpler for the single child case. We only need to do a + // placement for inserting new children. + if (shouldTrackSideEffects && newFiber.alternate === null) { + newFiber.flags |= Placement | PlacementDEV; + } - if (firstBaseUpdate === null) { - // `queue.lanes` is used for entangling transitions. We can set it back to - // zero once the queue is empty. - queue.shared.lanes = NoLanes; - } // Set the remaining expiration time to be whatever is remaining in the queue. - // This should be fine because the only two other things that contribute to - // expiration time are props and context. We're already in the middle of the - // begin phase by the time we start processing the queue, so we've already - // dealt with the props. Context in components that specify - // shouldComponentUpdate is tricky; but we'll have to account for - // that regardless. + return newFiber; + } - markSkippedUpdateLanes(newLanes); - workInProgress.lanes = newLanes; - workInProgress.memoizedState = newState; - } + function updateTextNode(returnFiber, current, textContent, lanes, debugInfo) { + if (current === null || current.tag !== HostText) { + // Insert + var created = createFiberFromText(textContent, returnFiber.mode, lanes); + created.return = returnFiber; { - currentlyProcessingQueue = null; + created._debugInfo = debugInfo; } - } - function callCallback(callback, context) { - if (typeof callback !== "function") { - throw new Error( - "Invalid argument passed as callback. Expected a function. Instead " + - ("received: " + callback) - ); + return created; + } else { + // Update + var existing = useFiber(current, textContent); + existing.return = returnFiber; + + { + existing._debugInfo = debugInfo; } - callback.call(context); + return existing; } + } - function resetHasForceUpdateBeforeProcessing() { - hasForceUpdate = false; - } - function checkHasForceUpdateAfterProcessing() { - return hasForceUpdate; + function updateElement(returnFiber, current, element, lanes, debugInfo) { + var elementType = element.type; + + if (elementType === REACT_FRAGMENT_TYPE) { + return updateFragment(returnFiber, current, element.props.children, lanes, element.key, debugInfo); } - function deferHiddenCallbacks(updateQueue) { - // When an update finishes on a hidden component, its callback should not - // be fired until/unless the component is made visible again. Stash the - // callback on the shared queue object so it can be fired later. - var newHiddenCallbacks = updateQueue.callbacks; - if (newHiddenCallbacks !== null) { - var existingHiddenCallbacks = updateQueue.shared.hiddenCallbacks; + if (current !== null) { + if (current.elementType === elementType || ( // Keep this check inline so it only runs on the false path: + isCompatibleFamilyForHotReloading(current, element) ) || // Lazy types should reconcile their resolved type. + // We need to do this after the Hot Reloading check above, + // because hot reloading has different semantics than prod because + // it doesn't resuspend. So we can't let the call below suspend. + typeof elementType === 'object' && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === current.type) { + // Move based on index + var existing = useFiber(current, element.props); + coerceRef(returnFiber, current, existing, element); + existing.return = returnFiber; - if (existingHiddenCallbacks === null) { - updateQueue.shared.hiddenCallbacks = newHiddenCallbacks; - } else { - updateQueue.shared.hiddenCallbacks = - existingHiddenCallbacks.concat(newHiddenCallbacks); + { + existing._debugOwner = element._owner; + existing._debugInfo = debugInfo; } + + return existing; } + } // Insert + + + var created = createFiberFromElement(element, returnFiber.mode, lanes); + coerceRef(returnFiber, current, created, element); + created.return = returnFiber; + + { + created._debugInfo = debugInfo; } - function commitHiddenCallbacks(updateQueue, context) { - // This component is switching from hidden -> visible. Commit any callbacks - // that were previously deferred. - var hiddenCallbacks = updateQueue.shared.hiddenCallbacks; - if (hiddenCallbacks !== null) { - updateQueue.shared.hiddenCallbacks = null; + return created; + } - for (var i = 0; i < hiddenCallbacks.length; i++) { - var callback = hiddenCallbacks[i]; - callCallback(callback, context); - } + function updatePortal(returnFiber, current, portal, lanes, debugInfo) { + if (current === null || current.tag !== HostPortal || current.stateNode.containerInfo !== portal.containerInfo || current.stateNode.implementation !== portal.implementation) { + // Insert + var created = createFiberFromPortal(portal, returnFiber.mode, lanes); + created.return = returnFiber; + + { + created._debugInfo = debugInfo; } - } - function commitCallbacks(updateQueue, context) { - var callbacks = updateQueue.callbacks; - if (callbacks !== null) { - updateQueue.callbacks = null; + return created; + } else { + // Update + var existing = useFiber(current, portal.children || []); + existing.return = returnFiber; - for (var i = 0; i < callbacks.length; i++) { - var callback = callbacks[i]; - callCallback(callback, context); - } + { + existing._debugInfo = debugInfo; } - } - // $FlowFixMe[method-unbinding] - var hasOwnProperty = Object.prototype.hasOwnProperty; + return existing; + } + } - /** - * Performs equality by iterating through keys on an object and returning false - * when any key has values which are not strictly equal between the arguments. - * Returns true when the values of all keys are strictly equal. - */ + function updateFragment(returnFiber, current, fragment, lanes, key, debugInfo) { + if (current === null || current.tag !== Fragment) { + // Insert + var created = createFiberFromFragment(fragment, returnFiber.mode, lanes, key); + created.return = returnFiber; - function shallowEqual(objA, objB) { - if (objectIs(objA, objB)) { - return true; + { + created._debugInfo = debugInfo; } - if ( - typeof objA !== "object" || - objA === null || - typeof objB !== "object" || - objB === null - ) { - return false; - } + return created; + } else { + // Update + var existing = useFiber(current, fragment); + existing.return = returnFiber; - var keysA = Object.keys(objA); - var keysB = Object.keys(objB); + { + existing._debugInfo = debugInfo; + } - if (keysA.length !== keysB.length) { - return false; - } // Test for A's keys different from B. + return existing; + } + } - for (var i = 0; i < keysA.length; i++) { - var currentKey = keysA[i]; + function createChild(returnFiber, newChild, lanes, debugInfo) { + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys. If the previous node is implicitly keyed + // we can continue to replace it without aborting even if it is not a text + // node. + var created = createFiberFromText( // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, returnFiber.mode, lanes); + created.return = returnFiber; - if ( - !hasOwnProperty.call(objB, currentKey) || // $FlowFixMe[incompatible-use] lost refinement of `objB` - !objectIs(objA[currentKey], objB[currentKey]) - ) { - return false; - } + { + created._debugInfo = debugInfo; } - return true; + return created; } - var current = null; - var isRendering = false; - function getCurrentFiberOwnerNameInDevOrNull() { - { - if (current === null) { - return null; - } + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + var _created = createFiberFromElement(newChild, returnFiber.mode, lanes); - var owner = current._debugOwner; + coerceRef(returnFiber, null, _created, newChild); + _created.return = returnFiber; - if (owner != null) { - return getComponentNameFromOwner(owner); - } + { + _created._debugInfo = mergeDebugInfo(debugInfo, newChild._debugInfo); + } + + return _created; + } + + case REACT_PORTAL_TYPE: + { + var _created2 = createFiberFromPortal(newChild, returnFiber.mode, lanes); + + _created2.return = returnFiber; + + { + _created2._debugInfo = debugInfo; + } + + return _created2; + } + + case REACT_LAZY_TYPE: + { + var payload = newChild._payload; + var init = newChild._init; + return createChild(returnFiber, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo) // call merge after init + ); + } } - return null; - } + if (isArray(newChild) || getIteratorFn(newChild)) { + var _created3 = createFiberFromFragment(newChild, returnFiber.mode, lanes, null); + + _created3.return = returnFiber; + + { + _created3._debugInfo = mergeDebugInfo(debugInfo, newChild._debugInfo); + } + + return _created3; + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - function getCurrentFiberStackInDev() { - { - if (current === null) { - return ""; - } // Safe because if current fiber exists, we are reconciling, - // and it is guaranteed to be the work-in-progress version. - return getStackByFiberInDevAndProd(current); + if (typeof newChild.then === 'function') { + var thenable = newChild; + return createChild(returnFiber, unwrapThenable(thenable), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - } - function resetCurrentFiber() { - { - ReactSharedInternals.getCurrentStack = null; - current = null; - isRendering = false; + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return createChild(returnFiber, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); } + + throwOnInvalidObjectType(returnFiber, newChild); } - function setCurrentFiber(fiber) { - { - ReactSharedInternals.getCurrentStack = - fiber === null ? null : getCurrentFiberStackInDev; - current = fiber; - isRendering = false; + + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); } - } - function getCurrentFiber() { - { - return current; + + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); } } - function setIsRendering(rendering) { - { - isRendering = rendering; + + return null; + } + + function updateSlot(returnFiber, oldFiber, newChild, lanes, debugInfo) { + // Update the fiber if the keys match, otherwise return null. + var key = oldFiber !== null ? oldFiber.key : null; + + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys. If the previous node is implicitly keyed + // we can continue to replace it without aborting even if it is not a text + // node. + if (key !== null) { + return null; } + + return updateTextNode(returnFiber, oldFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes, debugInfo); } - var ReactStrictModeWarnings = { - recordUnsafeLifecycleWarnings: function (fiber, instance) {}, - flushPendingUnsafeLifecycleWarnings: function () {}, - recordLegacyContextWarning: function (fiber, instance) {}, - flushLegacyContextWarning: function () {}, - discardPendingWarnings: function () {} - }; + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + if (newChild.key === key) { + return updateElement(returnFiber, oldFiber, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } else { + return null; + } + } - { - var findStrictRoot = function (fiber) { - var maybeStrictRoot = null; - var node = fiber; + case REACT_PORTAL_TYPE: + { + if (newChild.key === key) { + return updatePortal(returnFiber, oldFiber, newChild, lanes, debugInfo); + } else { + return null; + } + } - while (node !== null) { - if (node.mode & StrictLegacyMode) { - maybeStrictRoot = node; + case REACT_LAZY_TYPE: + { + var payload = newChild._payload; + var init = newChild._init; + return updateSlot(returnFiber, oldFiber, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } + } - node = node.return; + if (isArray(newChild) || getIteratorFn(newChild)) { + if (key !== null) { + return null; } - return maybeStrictRoot; - }; - - var setToSortedString = function (set) { - var array = []; - set.forEach(function (value) { - array.push(value); - }); - return array.sort().join(", "); - }; + return updateFragment(returnFiber, oldFiber, newChild, lanes, null, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - var pendingComponentWillMountWarnings = []; - var pendingUNSAFE_ComponentWillMountWarnings = []; - var pendingComponentWillReceivePropsWarnings = []; - var pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - var pendingComponentWillUpdateWarnings = []; - var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about. - - var didWarnAboutUnsafeLifecycles = new Set(); - - ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function ( - fiber, - instance - ) { - // Dedupe strategy: Warn once per component. - if (didWarnAboutUnsafeLifecycles.has(fiber.type)) { - return; - } - if ( - typeof instance.componentWillMount === "function" && // Don't warn about react-lifecycles-compat polyfilled components. - instance.componentWillMount.__suppressDeprecationWarning !== true - ) { - pendingComponentWillMountWarnings.push(fiber); - } + if (typeof newChild.then === 'function') { + var thenable = newChild; + return updateSlot(returnFiber, oldFiber, unwrapThenable(thenable), lanes, debugInfo); + } - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillMount === "function" - ) { - pendingUNSAFE_ComponentWillMountWarnings.push(fiber); - } + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return updateSlot(returnFiber, oldFiber, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - if ( - typeof instance.componentWillReceiveProps === "function" && - instance.componentWillReceiveProps.__suppressDeprecationWarning !== - true - ) { - pendingComponentWillReceivePropsWarnings.push(fiber); - } + throwOnInvalidObjectType(returnFiber, newChild); + } - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillReceiveProps === "function" - ) { - pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber); - } + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - if ( - typeof instance.componentWillUpdate === "function" && - instance.componentWillUpdate.__suppressDeprecationWarning !== true - ) { - pendingComponentWillUpdateWarnings.push(fiber); - } + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillUpdate === "function" - ) { - pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber); - } - }; + return null; + } - ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = - function () { - // We do an initial pass to gather component names - var componentWillMountUniqueNames = new Set(); - - if (pendingComponentWillMountWarnings.length > 0) { - pendingComponentWillMountWarnings.forEach(function (fiber) { - componentWillMountUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillMountWarnings = []; - } + function updateFromMap(existingChildren, returnFiber, newIdx, newChild, lanes, debugInfo) { + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys, so we neither have to check the old nor + // new node for the key. If both are text nodes, they match. + var matchedFiber = existingChildren.get(newIdx) || null; + return updateTextNode(returnFiber, matchedFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes, debugInfo); + } - var UNSAFE_componentWillMountUniqueNames = new Set(); + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + var _matchedFiber = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null; - if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) { - pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) { - UNSAFE_componentWillMountUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingUNSAFE_ComponentWillMountWarnings = []; + return updateElement(returnFiber, _matchedFiber, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - var componentWillReceivePropsUniqueNames = new Set(); + case REACT_PORTAL_TYPE: + { + var _matchedFiber2 = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null; - if (pendingComponentWillReceivePropsWarnings.length > 0) { - pendingComponentWillReceivePropsWarnings.forEach(function (fiber) { - componentWillReceivePropsUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillReceivePropsWarnings = []; + return updatePortal(returnFiber, _matchedFiber2, newChild, lanes, debugInfo); } - var UNSAFE_componentWillReceivePropsUniqueNames = new Set(); + case REACT_LAZY_TYPE: + var payload = newChild._payload; + var init = newChild._init; + return updateFromMap(existingChildren, returnFiber, newIdx, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } - if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) { - pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach( - function (fiber) { - UNSAFE_componentWillReceivePropsUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - } - ); - pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - } + if (isArray(newChild) || getIteratorFn(newChild)) { + var _matchedFiber3 = existingChildren.get(newIdx) || null; - var componentWillUpdateUniqueNames = new Set(); + return updateFragment(returnFiber, _matchedFiber3, newChild, lanes, null, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - if (pendingComponentWillUpdateWarnings.length > 0) { - pendingComponentWillUpdateWarnings.forEach(function (fiber) { - componentWillUpdateUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillUpdateWarnings = []; - } - var UNSAFE_componentWillUpdateUniqueNames = new Set(); - - if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) { - pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) { - UNSAFE_componentWillUpdateUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingUNSAFE_ComponentWillUpdateWarnings = []; - } // Finally, we flush all the warnings - // UNSAFE_ ones before the deprecated ones, since they'll be 'louder' - - if (UNSAFE_componentWillMountUniqueNames.size > 0) { - var sortedNames = setToSortedString( - UNSAFE_componentWillMountUniqueNames - ); + if (typeof newChild.then === 'function') { + var thenable = newChild; + return updateFromMap(existingChildren, returnFiber, newIdx, unwrapThenable(thenable), lanes, debugInfo); + } - error( - "Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + - "\nPlease update the following components: %s", - sortedNames - ); - } + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return updateFromMap(existingChildren, returnFiber, newIdx, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) { - var _sortedNames = setToSortedString( - UNSAFE_componentWillReceivePropsUniqueNames - ); + throwOnInvalidObjectType(returnFiber, newChild); + } - error( - "Using UNSAFE_componentWillReceiveProps in strict mode is not recommended " + - "and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* If you're updating state whenever props change, " + - "refactor your code to use memoization techniques or move it to " + - "static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n" + - "\nPlease update the following components: %s", - _sortedNames - ); - } + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - if (UNSAFE_componentWillUpdateUniqueNames.size > 0) { - var _sortedNames2 = setToSortedString( - UNSAFE_componentWillUpdateUniqueNames - ); + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } - error( - "Using UNSAFE_componentWillUpdate in strict mode is not recommended " + - "and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "\nPlease update the following components: %s", - _sortedNames2 - ); - } + return null; + } + /** + * Warns if there is a duplicate or missing key + */ - if (componentWillMountUniqueNames.size > 0) { - var _sortedNames3 = setToSortedString( - componentWillMountUniqueNames - ); - warn( - "componentWillMount has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + - "* Rename componentWillMount to UNSAFE_componentWillMount to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames3 - ); - } + function warnOnInvalidKey(child, knownKeys, returnFiber) { + { + if (typeof child !== 'object' || child === null) { + return knownKeys; + } - if (componentWillReceivePropsUniqueNames.size > 0) { - var _sortedNames4 = setToSortedString( - componentWillReceivePropsUniqueNames - ); + switch (child.$$typeof) { + case REACT_ELEMENT_TYPE: + case REACT_PORTAL_TYPE: + warnForMissingKey(child, returnFiber); + var key = child.key; - warn( - "componentWillReceiveProps has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* If you're updating state whenever props change, refactor your " + - "code to use memoization techniques or move it to " + - "static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n" + - "* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames4 - ); + if (typeof key !== 'string') { + break; } - if (componentWillUpdateUniqueNames.size > 0) { - var _sortedNames5 = setToSortedString( - componentWillUpdateUniqueNames - ); + if (knownKeys === null) { + knownKeys = new Set(); + knownKeys.add(key); + break; + } - warn( - "componentWillUpdate has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames5 - ); + if (!knownKeys.has(key)) { + knownKeys.add(key); + break; } - }; - var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about. + error('Encountered two children with the same key, `%s`. ' + 'Keys should be unique so that components maintain their identity ' + 'across updates. Non-unique keys may cause children to be ' + 'duplicated and/or omitted — the behavior is unsupported and ' + 'could change in a future version.', key); - var didWarnAboutLegacyContext = new Set(); + break; - ReactStrictModeWarnings.recordLegacyContextWarning = function ( - fiber, - instance - ) { - var strictRoot = findStrictRoot(fiber); + case REACT_LAZY_TYPE: + var payload = child._payload; + var init = child._init; + warnOnInvalidKey(init(payload), knownKeys, returnFiber); + break; + } + } - if (strictRoot === null) { - error( - "Expected to find a StrictMode component in a strict mode tree. " + - "This error is likely caused by a bug in React. Please file an issue." - ); + return knownKeys; + } + + function reconcileChildrenArray(returnFiber, currentFirstChild, newChildren, lanes, debugInfo) { + // This algorithm can't optimize by searching from both ends since we + // don't have backpointers on fibers. I'm trying to see how far we can get + // with that model. If it ends up not being worth the tradeoffs, we can + // add it later. + // Even with a two ended optimization, we'd want to optimize for the case + // where there are few changes and brute force the comparison instead of + // going for the Map. It'd like to explore hitting that path first in + // forward-only mode and only go for the Map once we notice that we need + // lots of look ahead. This doesn't handle reversal as well as two ended + // search but that's unusual. Besides, for the two ended optimization to + // work on Iterables, we'd need to copy the whole set. + // In this first iteration, we'll just live with hitting the bad case + // (adding everything to a Map) in for every insert/move. + // If you change this code, also update reconcileChildrenIterator() which + // uses the same algorithm. + { + // First, validate keys. + var knownKeys = null; - return; - } // Dedup strategy: Warn once per component. + for (var i = 0; i < newChildren.length; i++) { + var child = newChildren[i]; + knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); + } + } - if (didWarnAboutLegacyContext.has(fiber.type)) { - return; - } + var resultingFirstChild = null; + var previousNewFiber = null; + var oldFiber = currentFirstChild; + var lastPlacedIndex = 0; + var newIdx = 0; + var nextOldFiber = null; - var warningsForRoot = pendingLegacyContextWarning.get(strictRoot); + for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) { + if (oldFiber.index > newIdx) { + nextOldFiber = oldFiber; + oldFiber = null; + } else { + nextOldFiber = oldFiber.sibling; + } - if ( - fiber.type.contextTypes != null || - fiber.type.childContextTypes != null || - (instance !== null && typeof instance.getChildContext === "function") - ) { - if (warningsForRoot === undefined) { - warningsForRoot = []; - pendingLegacyContextWarning.set(strictRoot, warningsForRoot); - } + var newFiber = updateSlot(returnFiber, oldFiber, newChildren[newIdx], lanes, debugInfo); - warningsForRoot.push(fiber); + if (newFiber === null) { + // TODO: This breaks on empty slots like null children. That's + // unfortunate because it triggers the slow path all the time. We need + // a better way to communicate whether this was a miss or null, + // boolean, undefined, etc. + if (oldFiber === null) { + oldFiber = nextOldFiber; } - }; - - ReactStrictModeWarnings.flushLegacyContextWarning = function () { - pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) { - if (fiberArray.length === 0) { - return; - } - - var firstFiber = fiberArray[0]; - var uniqueNames = new Set(); - fiberArray.forEach(function (fiber) { - uniqueNames.add(getComponentNameFromFiber(fiber) || "Component"); - didWarnAboutLegacyContext.add(fiber.type); - }); - var sortedNames = setToSortedString(uniqueNames); - - try { - setCurrentFiber(firstFiber); - - error( - "Legacy context API has been detected within a strict-mode tree." + - "\n\nThe old API will be supported in all 16.x releases, but applications " + - "using it should migrate to the new version." + - "\n\nPlease update the following components: %s" + - "\n\nLearn more about this warning here: https://react.dev/link/legacy-context", - sortedNames - ); - } finally { - resetCurrentFiber(); - } - }); - }; - ReactStrictModeWarnings.discardPendingWarnings = function () { - pendingComponentWillMountWarnings = []; - pendingUNSAFE_ComponentWillMountWarnings = []; - pendingComponentWillReceivePropsWarnings = []; - pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - pendingComponentWillUpdateWarnings = []; - pendingUNSAFE_ComponentWillUpdateWarnings = []; - pendingLegacyContextWarning = new Map(); - }; - } + break; + } - function getThenablesFromState(state) { - { - var devState = state; - return devState.thenables; - } - } // An error that is thrown (e.g. by `use`) to trigger Suspense. If we - // detect this is caught by userspace, we'll log a warning in development. - - var SuspenseException = new Error( - "Suspense Exception: This is not a real error! It's an implementation " + - "detail of `use` to interrupt the current render. You must either " + - "rethrow it immediately, or move the `use` call outside of the " + - "`try/catch` block. Capturing without rethrowing will lead to " + - "unexpected behavior.\n\n" + - "To handle async errors, wrap your component in an error boundary, or " + - "call the promise's `.catch` method and pass the result to `use`" - ); - var SuspenseyCommitException = new Error( - "Suspense Exception: This is not a real error, and should not leak into " + - "userspace. If you're seeing this, it's likely a bug in React." - ); // This is a noop thenable that we use to trigger a fallback in throwException. - // TODO: It would be better to refactor throwException into multiple functions - // so we can trigger a fallback directly without having to check the type. But - // for now this will do. - - var noopSuspenseyCommitThenable = { - then: function () { - { - error( - "Internal React error: A listener was unexpectedly attached to a " + - '"noop" thenable. This is a bug in React. Please file an issue.' - ); + if (shouldTrackSideEffects) { + if (oldFiber && newFiber.alternate === null) { + // We matched the slot, but we didn't reuse the existing fiber, so we + // need to delete the existing child. + deleteChild(returnFiber, oldFiber); } } - }; - function createThenableState() { - // The ThenableState is created the first time a component suspends. If it - // suspends again, we'll reuse the same state. - { - return { - didWarnAboutUncachedPromise: false, - thenables: [] - }; - } - } - function isThenableResolved(thenable) { - var status = thenable.status; - return status === "fulfilled" || status === "rejected"; - } - function noop() {} + lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); - function trackUsedThenable(thenableState, thenable, index) { - if (ReactSharedInternals.actQueue !== null) { - ReactSharedInternals.didUsePromise = true; + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = newFiber; + } else { + // TODO: Defer siblings if we're not at the right index for this slot. + // I.e. if we had null values before, then we want to defer this + // for each null value. However, we also don't want to call updateSlot + // with the previous one. + previousNewFiber.sibling = newFiber; } - var trackedThenables = getThenablesFromState(thenableState); - var previous = trackedThenables[index]; + previousNewFiber = newFiber; + oldFiber = nextOldFiber; + } - if (previous === undefined) { - trackedThenables.push(thenable); - } else { - if (previous !== thenable) { - // Reuse the previous thenable, and drop the new one. We can assume - // they represent the same value, because components are idempotent. - { - var thenableStateDev = thenableState; + if (newIdx === newChildren.length) { + // We've reached the end of the new children. We can delete the rest. + deleteRemainingChildren(returnFiber, oldFiber); - if (!thenableStateDev.didWarnAboutUncachedPromise) { - // We should only warn the first time an uncached thenable is - // discovered per component, because if there are multiple, the - // subsequent ones are likely derived from the first. - // - // We track this on the thenableState instead of deduping using the - // component name like we usually do, because in the case of a - // promise-as-React-node, the owner component is likely different from - // the parent that's currently being reconciled. We'd have to track - // the owner using state, which we're trying to move away from. Though - // since this is dev-only, maybe that'd be OK. - // - // However, another benefit of doing it this way is we might - // eventually have a thenableState per memo/Forget boundary instead - // of per component, so this would allow us to have more - // granular warnings. - thenableStateDev.didWarnAboutUncachedPromise = true; // TODO: This warning should link to a corresponding docs page. - - error( - "A component was suspended by an uncached promise. Creating " + - "promises inside a Client Component or hook is not yet " + - "supported, except via a Suspense-compatible library or framework." - ); - } - } // Avoid an unhandled rejection errors for the Promises that we'll - // intentionally ignore. + return resultingFirstChild; + } - thenable.then(noop, noop); - thenable = previous; - } - } // We use an expando to track the status and result of a thenable so that we - // can synchronously unwrap the value. Think of this as an extension of the - // Promise API, or a custom interface that is a superset of Thenable. - // - // If the thenable doesn't have a status, set it to "pending" and attach - // a listener that will update its status and result when it resolves. + if (oldFiber === null) { + // If we don't have any more existing children we can choose a fast path + // since the rest will all be insertions. + for (; newIdx < newChildren.length; newIdx++) { + var _newFiber = createChild(returnFiber, newChildren[newIdx], lanes, debugInfo); - switch (thenable.status) { - case "fulfilled": { - var fulfilledValue = thenable.value; - return fulfilledValue; + if (_newFiber === null) { + continue; } - case "rejected": { - var rejectedError = thenable.reason; - checkIfUseWrappedInAsyncCatch(rejectedError); - throw rejectedError; + lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx); + + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = _newFiber; + } else { + previousNewFiber.sibling = _newFiber; } - default: { - if (typeof thenable.status === "string") { - // Only instrument the thenable if the status if not defined. If - // it's defined, but an unknown value, assume it's been instrumented by - // some custom userspace implementation. We treat it as "pending". - // Attach a dummy listener, to ensure that any lazy initialization can - // happen. Flight lazily parses JSON when the value is actually awaited. - thenable.then(noop, noop); - } else { - // This is an uncached thenable that we haven't seen before. - // Detect infinite ping loops caused by uncached promises. - var root = getWorkInProgressRoot(); - - if (root !== null && root.shellSuspendCounter > 100) { - // This root has suspended repeatedly in the shell without making any - // progress (i.e. committing something). This is highly suggestive of - // an infinite ping loop, often caused by an accidental Async Client - // Component. - // - // During a transition, we can suspend the work loop until the promise - // to resolve, but this is a sync render, so that's not an option. We - // also can't show a fallback, because none was provided. So our last - // resort is to throw an error. - // - // TODO: Remove this error in a future release. Other ways of handling - // this case include forcing a concurrent render, or putting the whole - // root into offscreen mode. - throw new Error( - "async/await is not yet supported in Client Components, only " + - "Server Components. This error is often caused by accidentally " + - "adding `'use client'` to a module that was originally written " + - "for the server." - ); - } + previousNewFiber = _newFiber; + } - var pendingThenable = thenable; - pendingThenable.status = "pending"; - pendingThenable.then( - function (fulfilledValue) { - if (thenable.status === "pending") { - var fulfilledThenable = thenable; - fulfilledThenable.status = "fulfilled"; - fulfilledThenable.value = fulfilledValue; - } - }, - function (error) { - if (thenable.status === "pending") { - var rejectedThenable = thenable; - rejectedThenable.status = "rejected"; - rejectedThenable.reason = error; - } - } - ); - } // Check one more time in case the thenable resolved synchronously. + return resultingFirstChild; + } // Add all children to a key map for quick lookups. - switch (thenable.status) { - case "fulfilled": { - var fulfilledThenable = thenable; - return fulfilledThenable.value; - } - case "rejected": { - var rejectedThenable = thenable; - var _rejectedError = rejectedThenable.reason; - checkIfUseWrappedInAsyncCatch(_rejectedError); - throw _rejectedError; - } - } // Suspend. - // - // Throwing here is an implementation detail that allows us to unwind the - // call stack. But we shouldn't allow it to leak into userspace. Throw an - // opaque placeholder value instead of the actual thenable. If it doesn't - // get captured by the work loop, log a warning, because that means - // something in userspace must have caught it. + var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - suspendedThenable = thenable; + for (; newIdx < newChildren.length; newIdx++) { + var _newFiber2 = updateFromMap(existingChildren, returnFiber, newIdx, newChildren[newIdx], lanes, debugInfo); - { - needsToResetSuspendedThenableDEV = true; + if (_newFiber2 !== null) { + if (shouldTrackSideEffects) { + if (_newFiber2.alternate !== null) { + // The new fiber is a work in progress, but if there exists a + // current, that means that we reused the fiber. We need to delete + // it from the child list so that we don't add it to the deletion + // list. + existingChildren.delete(_newFiber2.key === null ? newIdx : _newFiber2.key); } - - throw SuspenseException; } - } - } - // passed to the rest of the Suspense implementation — which, for historical - // reasons, expects to receive a thenable. - var suspendedThenable = null; - var needsToResetSuspendedThenableDEV = false; - function getSuspendedThenable() { - // This is called right after `use` suspends by throwing an exception. `use` - // throws an opaque value instead of the thenable itself so that it can't be - // caught in userspace. Then the work loop accesses the actual thenable using - // this function. - if (suspendedThenable === null) { - throw new Error( - "Expected a suspended thenable. This is a bug in React. Please file " + - "an issue." - ); - } + lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx); - var thenable = suspendedThenable; - suspendedThenable = null; + if (previousNewFiber === null) { + resultingFirstChild = _newFiber2; + } else { + previousNewFiber.sibling = _newFiber2; + } - { - needsToResetSuspendedThenableDEV = false; + previousNewFiber = _newFiber2; } - - return thenable; } - function checkIfUseWrappedInTryCatch() { - { - // This was set right before SuspenseException was thrown, and it should - // have been cleared when the exception was handled. If it wasn't, - // it must have been caught by userspace. - if (needsToResetSuspendedThenableDEV) { - needsToResetSuspendedThenableDEV = false; - return true; - } - } - return false; - } - function checkIfUseWrappedInAsyncCatch(rejectedReason) { - // This check runs in prod, too, because it prevents a more confusing - // downstream error, where SuspenseException is caught by a promise and - // thrown asynchronously. - // TODO: Another way to prevent SuspenseException from leaking into an async - // execution context is to check the dispatcher every time `use` is called, - // or some equivalent. That might be preferable for other reasons, too, since - // it matches how we prevent similar mistakes for other hooks. - if (rejectedReason === SuspenseException) { - throw new Error( - "Hooks are not supported inside an async component. This " + - "error is often caused by accidentally adding `'use client'` " + - "to a module that was originally written for the server." - ); - } - } - - var thenableState$1 = null; - var thenableIndexCounter$1 = 0; - - function mergeDebugInfo(outer, inner) { - if (inner == null) { - return outer; - } else if (outer === null) { - return inner; - } else { - // If we have two debugInfo, we need to create a new one. This makes the array no longer - // live so we'll miss any future updates if we received more so ideally we should always - // do this after both have fully resolved/unsuspended. - return outer.concat(inner); - } + if (shouldTrackSideEffects) { + // Any existing children that weren't consumed above were deleted. We need + // to add them to the deletion list. + existingChildren.forEach(function (child) { + return deleteChild(returnFiber, child); + }); } - var didWarnAboutMaps; - var didWarnAboutGenerators; - var ownerHasKeyUseWarning; - var ownerHasFunctionTypeWarning; - var ownerHasSymbolTypeWarning; + return resultingFirstChild; + } - var warnForMissingKey = function (child, returnFiber) {}; + function reconcileChildrenIterator(returnFiber, currentFirstChild, newChildrenIterable, lanes, debugInfo) { + // This is the same implementation as reconcileChildrenArray(), + // but using the iterator instead. + var iteratorFn = getIteratorFn(newChildrenIterable); - { - didWarnAboutMaps = false; - didWarnAboutGenerators = false; - /** - * Warn if there's no key explicitly set on dynamic arrays of children or - * object keys are not valid. This allows us to keep track of children between - * updates. - */ - - ownerHasKeyUseWarning = {}; - ownerHasFunctionTypeWarning = {}; - ownerHasSymbolTypeWarning = {}; - - warnForMissingKey = function (child, returnFiber) { - if (child === null || typeof child !== "object") { - return; - } + if (typeof iteratorFn !== 'function') { + throw new Error('An object is not an iterable. This error is likely caused by a bug in ' + 'React. Please file an issue.'); + } - if (!child._store || child._store.validated || child.key != null) { - return; + { + // We don't support rendering Generators because it's a mutation. + // See https://github.com/facebook/react/issues/12995 + if (typeof Symbol === 'function' && // $FlowFixMe[prop-missing] Flow doesn't know about toStringTag + newChildrenIterable[Symbol.toStringTag] === 'Generator') { + if (!didWarnAboutGenerators) { + error('Using Generators as children is unsupported and will likely yield ' + 'unexpected results because enumerating a generator mutates it. ' + 'You may convert it to an array with `Array.from()` or the ' + '`[...spread]` operator before rendering. Keep in mind ' + 'you might need to polyfill these features for older browsers.'); } - if (typeof child._store !== "object") { - throw new Error( - "React Component in warnForMissingKey should have a _store. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } // $FlowFixMe[cannot-write] unable to narrow type from mixed to writable object + didWarnAboutGenerators = true; + } // Warn about using Maps as children - child._store.validated = true; - var componentName = - getComponentNameFromFiber(returnFiber) || "Component"; - if (ownerHasKeyUseWarning[componentName]) { - return; + if (newChildrenIterable.entries === iteratorFn) { + if (!didWarnAboutMaps) { + error('Using Maps as children is not supported. ' + 'Use an array of keyed ReactElements instead.'); } - ownerHasKeyUseWarning[componentName] = true; + didWarnAboutMaps = true; + } // First, validate keys. + // We'll get a different iterator later for the main pass. - error( - "Each child in a list should have a unique " + - '"key" prop. See https://react.dev/link/warning-keys for ' + - "more information." - ); - }; - } - function unwrapThenable(thenable) { - var index = thenableIndexCounter$1; - thenableIndexCounter$1 += 1; + var _newChildren = iteratorFn.call(newChildrenIterable); - if (thenableState$1 === null) { - thenableState$1 = createThenableState(); - } + if (_newChildren) { + var knownKeys = null; - return trackUsedThenable(thenableState$1, thenable, index); - } + var _step = _newChildren.next(); - function coerceRef(returnFiber, current, workInProgress, element) { - var ref; + for (; !_step.done; _step = _newChildren.next()) { + var child = _step.value; + knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); + } + } + } - { - // Old behavior. - ref = element.ref; - } // TODO: If enableRefAsProp is on, we shouldn't use the `ref` field. We - // should always read the ref from the prop. + var newChildren = iteratorFn.call(newChildrenIterable); - workInProgress.ref = ref; + if (newChildren == null) { + throw new Error('An iterable object provided no iterator.'); } - function throwOnInvalidObjectType(returnFiber, newChild) { - // $FlowFixMe[method-unbinding] - var childString = Object.prototype.toString.call(newChild); - throw new Error( - "Objects are not valid as a React child (found: " + - (childString === "[object Object]" - ? "object with keys {" + Object.keys(newChild).join(", ") + "}" - : childString) + - "). " + - "If you meant to render a collection of children, use an array " + - "instead." - ); - } - - function warnOnFunctionType(returnFiber, invalidChild) { - { - var parentName = getComponentNameFromFiber(returnFiber) || "Component"; + var resultingFirstChild = null; + var previousNewFiber = null; + var oldFiber = currentFirstChild; + var lastPlacedIndex = 0; + var newIdx = 0; + var nextOldFiber = null; + var step = newChildren.next(); - if (ownerHasFunctionTypeWarning[parentName]) { - return; + for (; oldFiber !== null && !step.done; newIdx++, step = newChildren.next()) { + if (oldFiber.index > newIdx) { + nextOldFiber = oldFiber; + oldFiber = null; + } else { + nextOldFiber = oldFiber.sibling; + } + + var newFiber = updateSlot(returnFiber, oldFiber, step.value, lanes, debugInfo); + + if (newFiber === null) { + // TODO: This breaks on empty slots like null children. That's + // unfortunate because it triggers the slow path all the time. We need + // a better way to communicate whether this was a miss or null, + // boolean, undefined, etc. + if (oldFiber === null) { + oldFiber = nextOldFiber; } - ownerHasFunctionTypeWarning[parentName] = true; - var name = invalidChild.displayName || invalidChild.name || "Component"; + break; + } - if (returnFiber.tag === HostRoot) { - error( - "Functions are not valid as a React child. This may happen if " + - "you return %s instead of <%s /> from render. " + - "Or maybe you meant to call this function rather than return it.\n" + - " root.render(%s)", - name, - name, - name - ); - } else { - error( - "Functions are not valid as a React child. This may happen if " + - "you return %s instead of <%s /> from render. " + - "Or maybe you meant to call this function rather than return it.\n" + - " <%s>{%s}", - name, - name, - parentName, - name, - parentName - ); + if (shouldTrackSideEffects) { + if (oldFiber && newFiber.alternate === null) { + // We matched the slot, but we didn't reuse the existing fiber, so we + // need to delete the existing child. + deleteChild(returnFiber, oldFiber); } } - } - function warnOnSymbolType(returnFiber, invalidChild) { - { - var parentName = getComponentNameFromFiber(returnFiber) || "Component"; + lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); - if (ownerHasSymbolTypeWarning[parentName]) { - return; - } + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = newFiber; + } else { + // TODO: Defer siblings if we're not at the right index for this slot. + // I.e. if we had null values before, then we want to defer this + // for each null value. However, we also don't want to call updateSlot + // with the previous one. + previousNewFiber.sibling = newFiber; + } - ownerHasSymbolTypeWarning[parentName] = true; // eslint-disable-next-line react-internal/safe-string-coercion + previousNewFiber = newFiber; + oldFiber = nextOldFiber; + } - var name = String(invalidChild); + if (step.done) { + // We've reached the end of the new children. We can delete the rest. + deleteRemainingChildren(returnFiber, oldFiber); - if (returnFiber.tag === HostRoot) { - error( - "Symbols are not valid as a React child.\n" + " root.render(%s)", - name - ); - } else { - error( - "Symbols are not valid as a React child.\n" + " <%s>%s", - parentName, - name, - parentName - ); - } - } + return resultingFirstChild; } - function resolveLazy(lazyType) { - var payload = lazyType._payload; - var init = lazyType._init; - return init(payload); - } // This wrapper function exists because I expect to clone the code in each path - // to be able to optimize each path individually by branching early. This needs - // a compiler or we can do it manually. Helpers that don't need this branching - // live outside of this function. + if (oldFiber === null) { + // If we don't have any more existing children we can choose a fast path + // since the rest will all be insertions. + for (; !step.done; newIdx++, step = newChildren.next()) { + var _newFiber3 = createChild(returnFiber, step.value, lanes, debugInfo); - function createChildReconciler(shouldTrackSideEffects) { - function deleteChild(returnFiber, childToDelete) { - if (!shouldTrackSideEffects) { - // Noop. - return; + if (_newFiber3 === null) { + continue; } - var deletions = returnFiber.deletions; + lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx); - if (deletions === null) { - returnFiber.deletions = [childToDelete]; - returnFiber.flags |= ChildDeletion; + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = _newFiber3; } else { - deletions.push(childToDelete); + previousNewFiber.sibling = _newFiber3; } - } - function deleteRemainingChildren(returnFiber, currentFirstChild) { - if (!shouldTrackSideEffects) { - // Noop. - return null; - } // TODO: For the shouldClone case, this could be micro-optimized a bit by - // assuming that after the first child we've already added everything. + previousNewFiber = _newFiber3; + } - var childToDelete = currentFirstChild; + return resultingFirstChild; + } // Add all children to a key map for quick lookups. - while (childToDelete !== null) { - deleteChild(returnFiber, childToDelete); - childToDelete = childToDelete.sibling; - } - return null; - } + var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - function mapRemainingChildren(currentFirstChild) { - // Add the remaining children to a temporary map so that we can find them by - // keys quickly. Implicit (null) keys get added to this set with their index - // instead. - var existingChildren = new Map(); - var existingChild = currentFirstChild; + for (; !step.done; newIdx++, step = newChildren.next()) { + var _newFiber4 = updateFromMap(existingChildren, returnFiber, newIdx, step.value, lanes, debugInfo); - while (existingChild !== null) { - if (existingChild.key !== null) { - existingChildren.set(existingChild.key, existingChild); - } else { - existingChildren.set(existingChild.index, existingChild); + if (_newFiber4 !== null) { + if (shouldTrackSideEffects) { + if (_newFiber4.alternate !== null) { + // The new fiber is a work in progress, but if there exists a + // current, that means that we reused the fiber. We need to delete + // it from the child list so that we don't add it to the deletion + // list. + existingChildren.delete(_newFiber4.key === null ? newIdx : _newFiber4.key); } - - existingChild = existingChild.sibling; } - return existingChildren; - } + lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx); + + if (previousNewFiber === null) { + resultingFirstChild = _newFiber4; + } else { + previousNewFiber.sibling = _newFiber4; + } - function useFiber(fiber, pendingProps) { - // We currently set sibling to null and index to 0 here because it is easy - // to forget to do before returning it. E.g. for the single child case. - var clone = createWorkInProgress(fiber, pendingProps); - clone.index = 0; - clone.sibling = null; - return clone; + previousNewFiber = _newFiber4; } + } - function placeChild(newFiber, lastPlacedIndex, newIndex) { - newFiber.index = newIndex; + if (shouldTrackSideEffects) { + // Any existing children that weren't consumed above were deleted. We need + // to add them to the deletion list. + existingChildren.forEach(function (child) { + return deleteChild(returnFiber, child); + }); + } - if (!shouldTrackSideEffects) { - // During hydration, the useId algorithm needs to know which fibers are - // part of a list of children (arrays, iterators). - newFiber.flags |= Forked; - return lastPlacedIndex; - } + return resultingFirstChild; + } + + function reconcileSingleTextNode(returnFiber, currentFirstChild, textContent, lanes) { + // There's no need to check for keys on text nodes since we don't have a + // way to define them. + if (currentFirstChild !== null && currentFirstChild.tag === HostText) { + // We already have an existing node so let's just update it and delete + // the rest. + deleteRemainingChildren(returnFiber, currentFirstChild.sibling); + var existing = useFiber(currentFirstChild, textContent); + existing.return = returnFiber; + return existing; + } // The existing first child is not a text node so we need to create one + // and delete the existing ones. + + + deleteRemainingChildren(returnFiber, currentFirstChild); + var created = createFiberFromText(textContent, returnFiber.mode, lanes); + created.return = returnFiber; + return created; + } + + function reconcileSingleElement(returnFiber, currentFirstChild, element, lanes, debugInfo) { + var key = element.key; + var child = currentFirstChild; + + while (child !== null) { + // TODO: If key === null and child.key === null, then this only applies to + // the first item in the list. + if (child.key === key) { + var elementType = element.type; - var current = newFiber.alternate; + if (elementType === REACT_FRAGMENT_TYPE) { + if (child.tag === Fragment) { + deleteRemainingChildren(returnFiber, child.sibling); + var existing = useFiber(child, element.props.children); + existing.return = returnFiber; - if (current !== null) { - var oldIndex = current.index; + { + existing._debugOwner = element._owner; + existing._debugInfo = debugInfo; + } - if (oldIndex < lastPlacedIndex) { - // This is a move. - newFiber.flags |= Placement | PlacementDEV; - return lastPlacedIndex; - } else { - // This item can stay in place. - return oldIndex; + return existing; } } else { - // This is an insertion. - newFiber.flags |= Placement | PlacementDEV; - return lastPlacedIndex; - } + if (child.elementType === elementType || ( // Keep this check inline so it only runs on the false path: + isCompatibleFamilyForHotReloading(child, element) ) || // Lazy types should reconcile their resolved type. + // We need to do this after the Hot Reloading check above, + // because hot reloading has different semantics than prod because + // it doesn't resuspend. So we can't let the call below suspend. + typeof elementType === 'object' && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === child.type) { + deleteRemainingChildren(returnFiber, child.sibling); + + var _existing = useFiber(child, element.props); + + coerceRef(returnFiber, child, _existing, element); + _existing.return = returnFiber; + + { + _existing._debugOwner = element._owner; + _existing._debugInfo = debugInfo; + } + + return _existing; + } + } // Didn't match. + + + deleteRemainingChildren(returnFiber, child); + break; + } else { + deleteChild(returnFiber, child); } - function placeSingleChild(newFiber) { - // This is simpler for the single child case. We only need to do a - // placement for inserting new children. - if (shouldTrackSideEffects && newFiber.alternate === null) { - newFiber.flags |= Placement | PlacementDEV; - } + child = child.sibling; + } + + if (element.type === REACT_FRAGMENT_TYPE) { + var created = createFiberFromFragment(element.props.children, returnFiber.mode, lanes, element.key); + created.return = returnFiber; - return newFiber; + { + created._debugInfo = debugInfo; } - function updateTextNode( - returnFiber, - current, - textContent, - lanes, - debugInfo - ) { - if (current === null || current.tag !== HostText) { - // Insert - var created = createFiberFromText( - textContent, - returnFiber.mode, - lanes - ); - created.return = returnFiber; + return created; + } else { + var _created4 = createFiberFromElement(element, returnFiber.mode, lanes); - { - created._debugInfo = debugInfo; - } + coerceRef(returnFiber, currentFirstChild, _created4, element); + _created4.return = returnFiber; - return created; - } else { - // Update - var existing = useFiber(current, textContent); - existing.return = returnFiber; + { + _created4._debugInfo = debugInfo; + } - { - existing._debugInfo = debugInfo; - } + return _created4; + } + } + function reconcileSinglePortal(returnFiber, currentFirstChild, portal, lanes, debugInfo) { + var key = portal.key; + var child = currentFirstChild; + + while (child !== null) { + // TODO: If key === null and child.key === null, then this only applies to + // the first item in the list. + if (child.key === key) { + if (child.tag === HostPortal && child.stateNode.containerInfo === portal.containerInfo && child.stateNode.implementation === portal.implementation) { + deleteRemainingChildren(returnFiber, child.sibling); + var existing = useFiber(child, portal.children || []); + existing.return = returnFiber; return existing; + } else { + deleteRemainingChildren(returnFiber, child); + break; } + } else { + deleteChild(returnFiber, child); } - function updateElement(returnFiber, current, element, lanes, debugInfo) { - var elementType = element.type; + child = child.sibling; + } + + var created = createFiberFromPortal(portal, returnFiber.mode, lanes); + created.return = returnFiber; + return created; + } // This API will tag the children with the side-effect of the reconciliation + // itself. They will be added to the side-effect list as we pass through the + // children and the parent. - if (elementType === REACT_FRAGMENT_TYPE) { - return updateFragment( - returnFiber, - current, - element.props.children, - lanes, - element.key, - debugInfo - ); - } - if (current !== null) { - if ( - current.elementType === elementType || // Keep this check inline so it only runs on the false path: - isCompatibleFamilyForHotReloading(current, element) || // Lazy types should reconcile their resolved type. - // We need to do this after the Hot Reloading check above, - // because hot reloading has different semantics than prod because - // it doesn't resuspend. So we can't let the call below suspend. - (typeof elementType === "object" && - elementType !== null && - elementType.$$typeof === REACT_LAZY_TYPE && - resolveLazy(elementType) === current.type) - ) { - // Move based on index - var existing = useFiber(current, element.props); - coerceRef(returnFiber, current, existing, element); - existing.return = returnFiber; + function reconcileChildFibersImpl(returnFiber, currentFirstChild, newChild, lanes, debugInfo) { + // This function is only recursive for Usables/Lazy and not nested arrays. + // That's so that using a Lazy wrapper is unobservable to the Fragment + // convention. + // If the top level item is an array, we treat it as a set of children, + // not as a fragment. Nested arrays on the other hand will be treated as + // fragment nodes. Recursion happens at the normal flow. + // Handle top level unkeyed fragments as if they were arrays. + // This leads to an ambiguity between <>{[...]} and <>.... + // We treat the ambiguous cases above the same. + // We don't use recursion here because a fragment inside a fragment + // is no longer considered "top level" for these purposes. + var isUnkeyedTopLevelFragment = typeof newChild === 'object' && newChild !== null && newChild.type === REACT_FRAGMENT_TYPE && newChild.key === null; - { - existing._debugOwner = element._owner; - existing._debugInfo = debugInfo; - } + if (isUnkeyedTopLevelFragment) { + newChild = newChild.props.children; + } // Handle object types - return existing; - } - } // Insert - var created = createFiberFromElement(element, returnFiber.mode, lanes); - coerceRef(returnFiber, current, created, element); - created.return = returnFiber; + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + return placeSingleChild(reconcileSingleElement(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo))); - { - created._debugInfo = debugInfo; - } + case REACT_PORTAL_TYPE: + return placeSingleChild(reconcileSinglePortal(returnFiber, currentFirstChild, newChild, lanes)); - return created; + case REACT_LAZY_TYPE: + var payload = newChild._payload; + var init = newChild._init; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - function updatePortal(returnFiber, current, portal, lanes, debugInfo) { - if ( - current === null || - current.tag !== HostPortal || - current.stateNode.containerInfo !== portal.containerInfo || - current.stateNode.implementation !== portal.implementation - ) { - // Insert - var created = createFiberFromPortal(portal, returnFiber.mode, lanes); - created.return = returnFiber; - - { - created._debugInfo = debugInfo; - } + if (isArray(newChild)) { + return reconcileChildrenArray(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } - return created; - } else { - // Update - var existing = useFiber(current, portal.children || []); - existing.return = returnFiber; + if (getIteratorFn(newChild)) { + return reconcileChildrenIterator(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usables are a valid React node type. When React encounters a Usable in + // a child position, it unwraps it using the same algorithm as `use`. For + // example, for promises, React will throw an exception to unwind the + // stack, then replay the component once the promise resolves. + // + // A difference from `use` is that React will keep unwrapping the value + // until it reaches a non-Usable type. + // + // e.g. Usable>> should resolve to T + // + // The structure is a bit unfortunate. Ideally, we shouldn't need to + // replay the entire begin phase of the parent fiber in order to reconcile + // the children again. This would require a somewhat significant refactor, + // because reconcilation happens deep within the begin phase, and + // depending on the type of work, not always at the end. We should + // consider as an future improvement. - { - existing._debugInfo = debugInfo; - } - return existing; - } + if (typeof newChild.then === 'function') { + var thenable = newChild; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, unwrapThenable(thenable), lanes, mergeDebugInfo(debugInfo, thenable._debugInfo)); } - function updateFragment( - returnFiber, - current, - fragment, - lanes, - key, - debugInfo - ) { - if (current === null || current.tag !== Fragment) { - // Insert - var created = createFiberFromFragment( - fragment, - returnFiber.mode, - lanes, - key - ); - created.return = returnFiber; - - { - created._debugInfo = debugInfo; - } + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - return created; - } else { - // Update - var existing = useFiber(current, fragment); - existing.return = returnFiber; + throwOnInvalidObjectType(returnFiber, newChild); + } - { - existing._debugInfo = debugInfo; - } + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + return placeSingleChild(reconcileSingleTextNode(returnFiber, currentFirstChild, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes)); + } - return existing; - } + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); } - function createChild(returnFiber, newChild, lanes, debugInfo) { - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys. If the previous node is implicitly keyed - // we can continue to replace it without aborting even if it is not a text - // node. - var created = createFiberFromText( - // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - returnFiber.mode, - lanes - ); - created.return = returnFiber; + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } // Remaining cases are all treated as empty. - { - created._debugInfo = debugInfo; - } - return created; - } + return deleteRemainingChildren(returnFiber, currentFirstChild); + } - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - var _created = createFiberFromElement( - newChild, - returnFiber.mode, - lanes - ); + function reconcileChildFibers(returnFiber, currentFirstChild, newChild, lanes) { + // This indirection only exists so we can reset `thenableState` at the end. + // It should get inlined by Closure. + thenableIndexCounter$1 = 0; + var firstChildFiber = reconcileChildFibersImpl(returnFiber, currentFirstChild, newChild, lanes, null // debugInfo + ); + thenableState$1 = null; // Don't bother to reset `thenableIndexCounter` to 0 because it always gets + // set at the beginning. - coerceRef(returnFiber, null, _created, newChild); - _created.return = returnFiber; + return firstChildFiber; + } - { - _created._debugInfo = mergeDebugInfo( - debugInfo, - newChild._debugInfo - ); - } + return reconcileChildFibers; +} - return _created; - } +var reconcileChildFibers = createChildReconciler(true); +var mountChildFibers = createChildReconciler(false); +function resetChildReconcilerOnUnwind() { + // On unwind, clear any pending thenables that were used. + thenableState$1 = null; + thenableIndexCounter$1 = 0; +} +function cloneChildFibers(current, workInProgress) { + if (current !== null && workInProgress.child !== current.child) { + throw new Error('Resuming work not yet implemented.'); + } + + if (workInProgress.child === null) { + return; + } + + var currentChild = workInProgress.child; + var newChild = createWorkInProgress(currentChild, currentChild.pendingProps); + workInProgress.child = newChild; + newChild.return = workInProgress; + + while (currentChild.sibling !== null) { + currentChild = currentChild.sibling; + newChild = newChild.sibling = createWorkInProgress(currentChild, currentChild.pendingProps); + newChild.return = workInProgress; + } + + newChild.sibling = null; +} // Reset a workInProgress child set to prepare it for a second pass. + +function resetChildFibers(workInProgress, lanes) { + var child = workInProgress.child; + + while (child !== null) { + resetWorkInProgress(child, lanes); + child = child.sibling; + } +} - case REACT_PORTAL_TYPE: { - var _created2 = createFiberFromPortal( - newChild, - returnFiber.mode, - lanes - ); +// TODO: This isn't being used yet, but it's intended to replace the +// InvisibleParentContext that is currently managed by SuspenseContext. - _created2.return = returnFiber; +var currentTreeHiddenStackCursor = createCursor(null); +var prevEntangledRenderLanesCursor = createCursor(NoLanes); +function pushHiddenContext(fiber, context) { + var prevEntangledRenderLanes = getEntangledRenderLanes(); + push(prevEntangledRenderLanesCursor, prevEntangledRenderLanes, fiber); + push(currentTreeHiddenStackCursor, context, fiber); // When rendering a subtree that's currently hidden, we must include all + // lanes that would have rendered if the hidden subtree hadn't been deferred. + // That is, in order to reveal content from hidden -> visible, we must commit + // all the updates that we skipped when we originally hid the tree. - { - _created2._debugInfo = debugInfo; - } + setEntangledRenderLanes(mergeLanes(prevEntangledRenderLanes, context.baseLanes)); +} +function reuseHiddenContextOnStack(fiber) { + // This subtree is not currently hidden, so we don't need to add any lanes + // to the render lanes. But we still need to push something to avoid a + // context mismatch. Reuse the existing context on the stack. + push(prevEntangledRenderLanesCursor, getEntangledRenderLanes(), fiber); + push(currentTreeHiddenStackCursor, currentTreeHiddenStackCursor.current, fiber); +} +function popHiddenContext(fiber) { + // Restore the previous render lanes from the stack + setEntangledRenderLanes(prevEntangledRenderLanesCursor.current); + pop(currentTreeHiddenStackCursor, fiber); + pop(prevEntangledRenderLanesCursor, fiber); +} +function isCurrentTreeHidden() { + return currentTreeHiddenStackCursor.current !== null; +} - return _created2; - } +// suspends, i.e. it's the nearest `catch` block on the stack. + +var suspenseHandlerStackCursor = createCursor(null); // Represents the outermost boundary that is not visible in the current tree. +// Everything above this is the "shell". When this is null, it means we're +// rendering in the shell of the app. If it's non-null, it means we're rendering +// deeper than the shell, inside a new tree that wasn't already visible. +// +// The main way we use this concept is to determine whether showing a fallback +// would result in a desirable or undesirable loading state. Activing a fallback +// in the shell is considered an undersirable loading state, because it would +// mean hiding visible (albeit stale) content in the current tree — we prefer to +// show the stale content, rather than switch to a fallback. But showing a +// fallback in a new tree is fine, because there's no stale content to +// prefer instead. + +var shellBoundary = null; +function getShellBoundary() { + return shellBoundary; +} +function pushPrimaryTreeSuspenseHandler(handler) { + // TODO: Pass as argument + var current = handler.alternate; + // propagated a single level. For example, when ForceSuspenseFallback is set, + // it should only force the nearest Suspense boundary into fallback mode. - case REACT_LAZY_TYPE: { - var payload = newChild._payload; - var init = newChild._init; - return createChild( - returnFiber, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) // call merge after init - ); - } - } + pushSuspenseListContext(handler, setDefaultShallowSuspenseListContext(suspenseStackCursor.current)); // Experimental feature: Some Suspense boundaries are marked as having an + // to push a nested Suspense handler, because it will get replaced by the + // outer fallback, anyway. Consider this as a future optimization. - if (isArray(newChild) || getIteratorFn(newChild)) { - var _created3 = createFiberFromFragment( - newChild, - returnFiber.mode, - lanes, - null - ); - _created3.return = returnFiber; + push(suspenseHandlerStackCursor, handler, handler); - { - _created3._debugInfo = mergeDebugInfo( - debugInfo, - newChild._debugInfo - ); - } + if (shellBoundary === null) { + if (current === null || isCurrentTreeHidden()) { + // This boundary is not visible in the current UI. + shellBoundary = handler; + } else { + var prevState = current.memoizedState; - return _created3; - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return createChild( - returnFiber, - unwrapThenable(thenable), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + if (prevState !== null) { + // This boundary is showing a fallback in the current UI. + shellBoundary = handler; + } + } + } +} +function pushFallbackTreeSuspenseHandler(fiber) { + // We're about to render the fallback. If something in the fallback suspends, + // it's akin to throwing inside of a `catch` block. This boundary should not + // capture. Reuse the existing handler on the stack. + reuseSuspenseHandlerOnStack(fiber); +} +function pushOffscreenSuspenseHandler(fiber) { + if (fiber.tag === OffscreenComponent) { + // A SuspenseList context is only pushed here to avoid a push/pop mismatch. + // Reuse the current value on the stack. + // TODO: We can avoid needing to push here by by forking popSuspenseHandler + // into separate functions for Suspense and Offscreen. + pushSuspenseListContext(fiber, suspenseStackCursor.current); + push(suspenseHandlerStackCursor, fiber, fiber); + + if (shellBoundary !== null) ; else { + var current = fiber.alternate; - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return createChild( - returnFiber, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } + if (current !== null) { + var prevState = current.memoizedState; - throwOnInvalidObjectType(returnFiber, newChild); + if (prevState !== null) { + // This is the first boundary in the stack that's already showing + // a fallback. So everything outside is considered the shell. + shellBoundary = fiber; } + } + } + } else { + // This is a LegacyHidden component. + reuseSuspenseHandlerOnStack(fiber); + } +} +function reuseSuspenseHandlerOnStack(fiber) { + pushSuspenseListContext(fiber, suspenseStackCursor.current); + push(suspenseHandlerStackCursor, getSuspenseHandler(), fiber); +} +function getSuspenseHandler() { + return suspenseHandlerStackCursor.current; +} +function popSuspenseHandler(fiber) { + pop(suspenseHandlerStackCursor, fiber); + + if (shellBoundary === fiber) { + // Popping back into the shell. + shellBoundary = null; + } + + popSuspenseListContext(fiber); +} // SuspenseList context +// TODO: Move to a separate module? We may change the SuspenseList +// implementation to hide/show in the commit phase, anyway. + +var DefaultSuspenseContext = 0; +var SubtreeSuspenseContextMask = 1; // ForceSuspenseFallback can be used by SuspenseList to force newly added +// items into their fallback state during one of the render passes. + +var ForceSuspenseFallback = 2; +var suspenseStackCursor = createCursor(DefaultSuspenseContext); +function hasSuspenseListContext(parentContext, flag) { + return (parentContext & flag) !== 0; +} +function setDefaultShallowSuspenseListContext(parentContext) { + return parentContext & SubtreeSuspenseContextMask; +} +function setShallowSuspenseListContext(parentContext, shallowContext) { + return parentContext & SubtreeSuspenseContextMask | shallowContext; +} +function pushSuspenseListContext(fiber, newContext) { + push(suspenseStackCursor, newContext, fiber); +} +function popSuspenseListContext(fiber) { + pop(suspenseStackCursor, fiber); +} - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } +// A non-null SuspenseState means that it is blocked for one reason or another. +// - A non-null dehydrated field means it's blocked pending hydration. +// - A non-null dehydrated field can use isSuspenseInstancePending or +// isSuspenseInstanceFallback to query the reason for being dehydrated. +// - A null dehydrated field means it's blocked by something suspending and +// we're currently showing a fallback instead. - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } +function findFirstSuspended(row) { + var node = row; + + while (node !== null) { + if (node.tag === SuspenseComponent) { + var state = node.memoizedState; + + if (state !== null) { + var dehydrated = state.dehydrated; + + if (dehydrated === null || isSuspenseInstancePending() || isSuspenseInstanceFallback()) { + return node; } + } + } else if (node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't + // keep track of whether it suspended or not. + node.memoizedProps.revealOrder !== undefined) { + var didSuspend = (node.flags & DidCapture) !== NoFlags$1; + + if (didSuspend) { + return node; + } + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } + + if (node === row) { + return null; + } + while (node.sibling === null) { + if (node.return === null || node.return === row) { return null; } - function updateSlot(returnFiber, oldFiber, newChild, lanes, debugInfo) { - // Update the fiber if the keys match, otherwise return null. - var key = oldFiber !== null ? oldFiber.key : null; + node = node.return; + } - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys. If the previous node is implicitly keyed - // we can continue to replace it without aborting even if it is not a text - // node. - if (key !== null) { - return null; - } + node.sibling.return = node.return; + node = node.sibling; + } - return updateTextNode( - returnFiber, - oldFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes, - debugInfo - ); - } - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - if (newChild.key === key) { - return updateElement( - returnFiber, - oldFiber, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } else { - return null; - } - } + return null; +} - case REACT_PORTAL_TYPE: { - if (newChild.key === key) { - return updatePortal( - returnFiber, - oldFiber, - newChild, - lanes, - debugInfo - ); - } else { - return null; - } - } +var NoFlags = +/* */ +0; // Represents whether effect should fire. + +var HasEffect = +/* */ +1; // Represents the phase in which the effect (not the clean-up) fires. + +var Insertion = +/* */ +2; +var Layout = +/* */ +4; +var Passive = +/* */ +8; + +var didWarnAboutMismatchedHooksForComponent; +var didWarnUncachedGetSnapshot; +var didWarnAboutUseWrappedInTryCatch; +var didWarnAboutAsyncClientComponent; +var didWarnAboutUseFormState; + +{ + didWarnAboutMismatchedHooksForComponent = new Set(); + didWarnAboutUseWrappedInTryCatch = new Set(); + didWarnAboutAsyncClientComponent = new Set(); + didWarnAboutUseFormState = new Set(); +} // The effect "instance" is a shared object that remains the same for the entire +// lifetime of an effect. In Rust terms, a RefCell. We use it to store the +// "destroy" function that is returned from an effect, because that is stateful. +// The field is `undefined` if the effect is unmounted, or if the effect ran +// but is not stateful. We don't explicitly track whether the effect is mounted +// or unmounted because that can be inferred by the hiddenness of the fiber in +// the tree, i.e. whether there is a hidden Offscreen fiber above it. +// +// It's unfortunate that this is stored on a separate object, because it adds +// more memory per effect instance, but it's conceptually sound. I think there's +// likely a better data structure we could use for effects; perhaps just one +// array of effect instances per fiber. But I think this is OK for now despite +// the additional memory and we can follow up with performance +// optimizations later. +// These are set right before calling the component. + + +var renderLanes = NoLanes; // The work-in-progress fiber. I've named it differently to distinguish it from +// the work-in-progress hook. + +var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The +// current hook list is the list that belongs to the current fiber. The +// work-in-progress hook list is a new list that will be added to the +// work-in-progress fiber. + +var currentHook = null; +var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This +// does not get reset if we do another render pass; only when we're completely +// finished evaluating this component. This is an optimization so we know +// whether we need to clear render phase updates after a throw. + +var didScheduleRenderPhaseUpdate = false; // Where an update was scheduled only during the current render pass. This +// gets reset after each attempt. +// TODO: Maybe there's some way to consolidate this with +// `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`. + +var didScheduleRenderPhaseUpdateDuringThisPass = false; +var shouldDoubleInvokeUserFnsInHooksDEV = false; // Counts the number of useId hooks in this component. + +var thenableIndexCounter = 0; +var thenableState = null; // Used for ids that are generated completely client-side (i.e. not during +// hydration). This counter is global, so client ids are not stable across +// render attempts. + +var globalClientIdCounter = 0; +var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook + +var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders. +// The list stores the order of hooks used during the initial render (mount). +// Subsequent renders (updates) reference this list. + +var hookTypesDev = null; +var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore +// the dependencies for Hooks that need them (e.g. useEffect or useMemo). +// When true, such Hooks will always be "remounted". Only used during hot reload. + +var ignorePreviousDependencies = false; + +function mountHookTypesDev() { + { + var hookName = currentHookNameInDev; + + if (hookTypesDev === null) { + hookTypesDev = [hookName]; + } else { + hookTypesDev.push(hookName); + } + } +} - case REACT_LAZY_TYPE: { - var payload = newChild._payload; - var init = newChild._init; - return updateSlot( - returnFiber, - oldFiber, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } - } +function updateHookTypesDev() { + { + var hookName = currentHookNameInDev; - if (isArray(newChild) || getIteratorFn(newChild)) { - if (key !== null) { - return null; - } + if (hookTypesDev !== null) { + hookTypesUpdateIndexDev++; - return updateFragment( - returnFiber, - oldFiber, - newChild, - lanes, - null, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return updateSlot( - returnFiber, - oldFiber, - unwrapThenable(thenable), - lanes, - debugInfo - ); - } + if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) { + warnOnHookMismatchInDev(hookName); + } + } + } +} - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return updateSlot( - returnFiber, - oldFiber, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } +function checkDepsAreArrayDev(deps) { + { + if (deps !== undefined && deps !== null && !isArray(deps)) { + // Verify deps, but only on mount to avoid extra checks. + // It's unlikely their type would change as usually you define them inline. + error('%s received a final argument that is not an array (instead, received `%s`). When ' + 'specified, the final argument must be an array.', currentHookNameInDev, typeof deps); + } + } +} - throwOnInvalidObjectType(returnFiber, newChild); - } +function warnOnHookMismatchInDev(currentHookName) { + { + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } + if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) { + didWarnAboutMismatchedHooksForComponent.add(componentName); + + if (hookTypesDev !== null) { + var table = ''; + var secondColumnStart = 30; + + for (var i = 0; i <= hookTypesUpdateIndexDev; i++) { + var oldHookName = hookTypesDev[i]; + var newHookName = i === hookTypesUpdateIndexDev ? currentHookName : oldHookName; + var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up + // lol @ IE not supporting String#repeat - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); + while (row.length < secondColumnStart) { + row += ' '; } + + row += newHookName + '\n'; + table += row; } - return null; + error('React has detected a change in the order of Hooks called by %s. ' + 'This will lead to bugs and errors if not fixed. ' + 'For more information, read the Rules of Hooks: https://react.dev/link/rules-of-hooks\n\n' + ' Previous render Next render\n' + ' ------------------------------------------------------\n' + '%s' + ' ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n', componentName, table); } + } + } +} - function updateFromMap( - existingChildren, - returnFiber, - newIdx, - newChild, - lanes, - debugInfo - ) { - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys, so we neither have to check the old nor - // new node for the key. If both are text nodes, they match. - var matchedFiber = existingChildren.get(newIdx) || null; - return updateTextNode( - returnFiber, - matchedFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes, - debugInfo - ); - } - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - var _matchedFiber = - existingChildren.get( - newChild.key === null ? newIdx : newChild.key - ) || null; - - return updateElement( - returnFiber, - _matchedFiber, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } +function warnOnUseFormStateInDev() { + { + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - case REACT_PORTAL_TYPE: { - var _matchedFiber2 = - existingChildren.get( - newChild.key === null ? newIdx : newChild.key - ) || null; - - return updatePortal( - returnFiber, - _matchedFiber2, - newChild, - lanes, - debugInfo - ); - } + if (!didWarnAboutUseFormState.has(componentName)) { + didWarnAboutUseFormState.add(componentName); - case REACT_LAZY_TYPE: - var payload = newChild._payload; - var init = newChild._init; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + error('ReactDOM.useFormState has been renamed to React.useActionState. ' + 'Please update %s to use React.useActionState.', componentName); + } + } +} - if (isArray(newChild) || getIteratorFn(newChild)) { - var _matchedFiber3 = existingChildren.get(newIdx) || null; +function warnIfAsyncClientComponent(Component) { + { + // This dev-only check only works for detecting native async functions, + // not transpiled ones. There's also a prod check that we use to prevent + // async client components from crashing the app; the prod one works even + // for transpiled async functions. Neither mechanism is completely + // bulletproof but together they cover the most common cases. + var isAsyncFunction = // $FlowIgnore[method-unbinding] + Object.prototype.toString.call(Component) === '[object AsyncFunction]'; - return updateFragment( - returnFiber, - _matchedFiber3, - newChild, - lanes, - null, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - unwrapThenable(thenable), - lanes, - debugInfo - ); - } + if (isAsyncFunction) { + // Encountered an async Client Component. This is not yet supported. + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } + if (!didWarnAboutAsyncClientComponent.has(componentName)) { + didWarnAboutAsyncClientComponent.add(componentName); - throwOnInvalidObjectType(returnFiber, newChild); - } + error('async/await is not yet supported in Client Components, only ' + 'Server Components. This error is often caused by accidentally ' + "adding `'use client'` to a module that was originally written " + 'for the server.'); + } + } + } +} - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } +function throwInvalidHookError() { + throw new Error('Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for' + ' one of the following reasons:\n' + '1. You might have mismatching versions of React and the renderer (such as React DOM)\n' + '2. You might be breaking the Rules of Hooks\n' + '3. You might have more than one copy of React in the same app\n' + 'See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem.'); +} - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } - } +function areHookInputsEqual(nextDeps, prevDeps) { + { + if (ignorePreviousDependencies) { + // Only true when this component is being hot reloaded. + return false; + } + } - return null; - } - /** - * Warns if there is a duplicate or missing key - */ + if (prevDeps === null) { + { + error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev); + } - function warnOnInvalidKey(child, knownKeys, returnFiber) { - { - if (typeof child !== "object" || child === null) { - return knownKeys; - } + return false; + } - switch (child.$$typeof) { - case REACT_ELEMENT_TYPE: - case REACT_PORTAL_TYPE: - warnForMissingKey(child, returnFiber); - var key = child.key; + { + // Don't bother comparing lengths in prod because these arrays should be + // passed inline. + if (nextDeps.length !== prevDeps.length) { + error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + prevDeps.join(', ') + "]", "[" + nextDeps.join(', ') + "]"); + } + } // $FlowFixMe[incompatible-use] found when upgrading Flow - if (typeof key !== "string") { - break; - } - if (knownKeys === null) { - knownKeys = new Set(); - knownKeys.add(key); - break; - } + for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (objectIs(nextDeps[i], prevDeps[i])) { + continue; + } - if (!knownKeys.has(key)) { - knownKeys.add(key); - break; - } + return false; + } - error( - "Encountered two children with the same key, `%s`. " + - "Keys should be unique so that components maintain their identity " + - "across updates. Non-unique keys may cause children to be " + - "duplicated and/or omitted — the behavior is unsupported and " + - "could change in a future version.", - key - ); + return true; +} - break; +function renderWithHooks(current, workInProgress, Component, props, secondArg, nextRenderLanes) { + renderLanes = nextRenderLanes; + currentlyRenderingFiber$1 = workInProgress; + + { + hookTypesDev = current !== null ? current._debugHookTypes : null; + hookTypesUpdateIndexDev = -1; // Used for hot reloading: + + ignorePreviousDependencies = current !== null && current.type !== workInProgress.type; + warnIfAsyncClientComponent(Component); + } + + workInProgress.memoizedState = null; + workInProgress.updateQueue = null; + workInProgress.lanes = NoLanes; // The following should have already been reset + // currentHook = null; + // workInProgressHook = null; + // didScheduleRenderPhaseUpdate = false; + // localIdCounter = 0; + // thenableIndexCounter = 0; + // thenableState = null; + // TODO Warn if no hooks are used at all during mount, then some are used during update. + // Currently we will identify the update render as a mount because memoizedState === null. + // This is tricky because it's valid for certain types of components (e.g. React.lazy) + // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used. + // Non-stateful hooks (e.g. context) don't get added to memoizedState, + // so memoizedState would be null during updates and mounts. + + { + if (current !== null && current.memoizedState !== null) { + ReactSharedInternals.H = HooksDispatcherOnUpdateInDEV; + } else if (hookTypesDev !== null) { + // This dispatcher handles an edge case where a component is updating, + // but no stateful hooks have been used. + // We want to match the production code behavior (which will use HooksDispatcherOnMount), + // but with the extra DEV validation to ensure hooks ordering hasn't changed. + // This dispatcher does that. + ReactSharedInternals.H = HooksDispatcherOnMountWithHookTypesInDEV; + } else { + ReactSharedInternals.H = HooksDispatcherOnMountInDEV; + } + } // In Strict Mode, during development, user functions are double invoked to + // help detect side effects. The logic for how this is implemented for in + // hook components is a bit complex so let's break it down. + // + // We will invoke the entire component function twice. However, during the + // second invocation of the component, the hook state from the first + // invocation will be reused. That means things like `useMemo` functions won't + // run again, because the deps will match and the memoized result will + // be reused. + // + // We want memoized functions to run twice, too, so account for this, user + // functions are double invoked during the *first* invocation of the component + // function, and are *not* double invoked during the second incovation: + // + // - First execution of component function: user functions are double invoked + // - Second execution of component function (in Strict Mode, during + // development): user functions are not double invoked. + // + // This is intentional for a few reasons; most importantly, it's because of + // how `use` works when something suspends: it reuses the promise that was + // passed during the first attempt. This is itself a form of memoization. + // We need to be able to memoize the reactive inputs to the `use` call using + // a hook (i.e. `useMemo`), which means, the reactive inputs to `use` must + // come from the same component invocation as the output. + // + // There are plenty of tests to ensure this behavior is correct. + + + var shouldDoubleRenderDEV = (workInProgress.mode & StrictLegacyMode) !== NoMode; + shouldDoubleInvokeUserFnsInHooksDEV = shouldDoubleRenderDEV; + var children = Component(props, secondArg); + shouldDoubleInvokeUserFnsInHooksDEV = false; // Check if there was a render phase update + + if (didScheduleRenderPhaseUpdateDuringThisPass) { + // Keep rendering until the component stabilizes (there are no more render + // phase updates). + children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + } + + if (shouldDoubleRenderDEV) { + // In development, components are invoked twice to help detect side effects. + setIsStrictModeForDevtools(true); + + try { + children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + } finally { + setIsStrictModeForDevtools(false); + } + } + + finishRenderingHooks(current, workInProgress); + return children; +} - case REACT_LAZY_TYPE: - var payload = child._payload; - var init = child._init; - warnOnInvalidKey(init(payload), knownKeys, returnFiber); - break; - } - } +function finishRenderingHooks(current, workInProgress, Component) { + { + workInProgress._debugHookTypes = hookTypesDev; + } // We can assume the previous dispatcher is always this one, since we set it + // at the beginning of the render phase and there's no re-entrance. - return knownKeys; - } - function reconcileChildrenArray( - returnFiber, - currentFirstChild, - newChildren, - lanes, - debugInfo - ) { - // This algorithm can't optimize by searching from both ends since we - // don't have backpointers on fibers. I'm trying to see how far we can get - // with that model. If it ends up not being worth the tradeoffs, we can - // add it later. - // Even with a two ended optimization, we'd want to optimize for the case - // where there are few changes and brute force the comparison instead of - // going for the Map. It'd like to explore hitting that path first in - // forward-only mode and only go for the Map once we notice that we need - // lots of look ahead. This doesn't handle reversal as well as two ended - // search but that's unusual. Besides, for the two ended optimization to - // work on Iterables, we'd need to copy the whole set. - // In this first iteration, we'll just live with hitting the bad case - // (adding everything to a Map) in for every insert/move. - // If you change this code, also update reconcileChildrenIterator() which - // uses the same algorithm. - { - // First, validate keys. - var knownKeys = null; + ReactSharedInternals.H = ContextOnlyDispatcher; // This check uses currentHook so that it works the same in DEV and prod bundles. + // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles. - for (var i = 0; i < newChildren.length; i++) { - var child = newChildren[i]; - knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); - } - } + var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null; + renderLanes = NoLanes; + currentlyRenderingFiber$1 = null; + currentHook = null; + workInProgressHook = null; - var resultingFirstChild = null; - var previousNewFiber = null; - var oldFiber = currentFirstChild; - var lastPlacedIndex = 0; - var newIdx = 0; - var nextOldFiber = null; + { + currentHookNameInDev = null; + hookTypesDev = null; + hookTypesUpdateIndexDev = -1; // Confirm that a static flag was not added or removed since the last + // render. If this fires, it suggests that we incorrectly reset the static + // flags in some other part of the codebase. This has happened before, for + // example, in the SuspenseList implementation. - for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) { - if (oldFiber.index > newIdx) { - nextOldFiber = oldFiber; - oldFiber = null; - } else { - nextOldFiber = oldFiber.sibling; - } + if (current !== null && (current.flags & StaticMask) !== (workInProgress.flags & StaticMask) && ( // Disable this warning in legacy mode, because legacy Suspense is weird + // and creates false positives. To make this work in legacy mode, we'd + // need to mark fibers that commit in an incomplete state, somehow. For + // now I'll disable the warning that most of the bugs that would trigger + // it are either exclusive to concurrent mode or exist in both. + (current.mode & ConcurrentMode) !== NoMode)) { + error('Internal React error: Expected static flag was missing. Please ' + 'notify the React team.'); + } + } - var newFiber = updateSlot( - returnFiber, - oldFiber, - newChildren[newIdx], - lanes, - debugInfo - ); - - if (newFiber === null) { - // TODO: This breaks on empty slots like null children. That's - // unfortunate because it triggers the slow path all the time. We need - // a better way to communicate whether this was a miss or null, - // boolean, undefined, etc. - if (oldFiber === null) { - oldFiber = nextOldFiber; - } + didScheduleRenderPhaseUpdate = false; // This is reset by checkDidRenderIdHook + // localIdCounter = 0; - break; - } + thenableIndexCounter = 0; + thenableState = null; - if (shouldTrackSideEffects) { - if (oldFiber && newFiber.alternate === null) { - // We matched the slot, but we didn't reuse the existing fiber, so we - // need to delete the existing child. - deleteChild(returnFiber, oldFiber); - } - } + if (didRenderTooFewHooks) { + throw new Error('Rendered fewer hooks than expected. This may be caused by an accidental ' + 'early return statement.'); + } - lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + { + if (checkIfUseWrappedInTryCatch()) { + var componentName = getComponentNameFromFiber(workInProgress) || 'Unknown'; - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = newFiber; - } else { - // TODO: Defer siblings if we're not at the right index for this slot. - // I.e. if we had null values before, then we want to defer this - // for each null value. However, we also don't want to call updateSlot - // with the previous one. - previousNewFiber.sibling = newFiber; - } + if (!didWarnAboutUseWrappedInTryCatch.has(componentName) && // This warning also fires if you suspend with `use` inside an + // async component. Since we warn for that above, we'll silence this + // second warning by checking here. + !didWarnAboutAsyncClientComponent.has(componentName)) { + didWarnAboutUseWrappedInTryCatch.add(componentName); - previousNewFiber = newFiber; - oldFiber = nextOldFiber; - } + error('`use` was called from inside a try/catch block. This is not allowed ' + 'and can lead to unexpected behavior. To handle errors triggered ' + 'by `use`, wrap your component in a error boundary.'); + } + } + } +} - if (newIdx === newChildren.length) { - // We've reached the end of the new children. We can delete the rest. - deleteRemainingChildren(returnFiber, oldFiber); +function replaySuspendedComponentWithHooks(current, workInProgress, Component, props, secondArg) { + // This function is used to replay a component that previously suspended, + // after its data resolves. + // + // It's a simplified version of renderWithHooks, but it doesn't need to do + // most of the set up work because they weren't reset when we suspended; they + // only get reset when the component either completes (finishRenderingHooks) + // or unwinds (resetHooksOnUnwind). + { + hookTypesUpdateIndexDev = -1; // Used for hot reloading: + + ignorePreviousDependencies = current !== null && current.type !== workInProgress.type; + } + + var children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + finishRenderingHooks(current, workInProgress); + return children; +} - return resultingFirstChild; - } +function renderWithHooksAgain(workInProgress, Component, props, secondArg) { + // This is used to perform another render pass. It's used when setState is + // called during render, and for double invoking components in Strict Mode + // during development. + // + // The state from the previous pass is reused whenever possible. So, state + // updates that were already processed are not processed again, and memoized + // functions (`useMemo`) are not invoked again. + // + // Keep rendering in a loop for as long as render phase updates continue to + // be scheduled. Use a counter to prevent infinite loops. + currentlyRenderingFiber$1 = workInProgress; + var numberOfReRenders = 0; + var children; + + do { + if (didScheduleRenderPhaseUpdateDuringThisPass) { + // It's possible that a use() value depended on a state that was updated in + // this rerender, so we need to watch for different thenables this time. + thenableState = null; + } - if (oldFiber === null) { - // If we don't have any more existing children we can choose a fast path - // since the rest will all be insertions. - for (; newIdx < newChildren.length; newIdx++) { - var _newFiber = createChild( - returnFiber, - newChildren[newIdx], - lanes, - debugInfo - ); + thenableIndexCounter = 0; + didScheduleRenderPhaseUpdateDuringThisPass = false; - if (_newFiber === null) { - continue; - } + if (numberOfReRenders >= RE_RENDER_LIMIT) { + throw new Error('Too many re-renders. React limits the number of renders to prevent ' + 'an infinite loop.'); + } - lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx); + numberOfReRenders += 1; - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = _newFiber; - } else { - previousNewFiber.sibling = _newFiber; - } + { + // Even when hot reloading, allow dependencies to stabilize + // after first render to prevent infinite render phase updates. + ignorePreviousDependencies = false; + } // Start over from the beginning of the list - previousNewFiber = _newFiber; - } - return resultingFirstChild; - } // Add all children to a key map for quick lookups. - - var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - - for (; newIdx < newChildren.length; newIdx++) { - var _newFiber2 = updateFromMap( - existingChildren, - returnFiber, - newIdx, - newChildren[newIdx], - lanes, - debugInfo - ); - - if (_newFiber2 !== null) { - if (shouldTrackSideEffects) { - if (_newFiber2.alternate !== null) { - // The new fiber is a work in progress, but if there exists a - // current, that means that we reused the fiber. We need to delete - // it from the child list so that we don't add it to the deletion - // list. - existingChildren.delete( - _newFiber2.key === null ? newIdx : _newFiber2.key - ); - } - } + currentHook = null; + workInProgressHook = null; + workInProgress.updateQueue = null; - lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx); + { + // Also validate hook order for cascading updates. + hookTypesUpdateIndexDev = -1; + } - if (previousNewFiber === null) { - resultingFirstChild = _newFiber2; - } else { - previousNewFiber.sibling = _newFiber2; - } + ReactSharedInternals.H = HooksDispatcherOnRerenderInDEV ; + children = Component(props, secondArg); + } while (didScheduleRenderPhaseUpdateDuringThisPass); - previousNewFiber = _newFiber2; - } - } + return children; +} - if (shouldTrackSideEffects) { - // Any existing children that weren't consumed above were deleted. We need - // to add them to the deletion list. - existingChildren.forEach(function (child) { - return deleteChild(returnFiber, child); - }); - } +function renderTransitionAwareHostComponentWithHooks(current, workInProgress, lanes) { + if (!enableAsyncActions) { + throw new Error('Not implemented.'); + } - return resultingFirstChild; - } + return renderWithHooks(current, workInProgress, TransitionAwareHostComponent, null, null, lanes); +} +function TransitionAwareHostComponent() { + if (!enableAsyncActions) { + throw new Error('Not implemented.'); + } - function reconcileChildrenIterator( - returnFiber, - currentFirstChild, - newChildrenIterable, - lanes, - debugInfo - ) { - // This is the same implementation as reconcileChildrenArray(), - // but using the iterator instead. - var iteratorFn = getIteratorFn(newChildrenIterable); + var dispatcher = ReactSharedInternals.H; - if (typeof iteratorFn !== "function") { - throw new Error( - "An object is not an iterable. This error is likely caused by a bug in " + - "React. Please file an issue." - ); - } + var _dispatcher$useState = dispatcher.useState(), + maybeThenable = _dispatcher$useState[0]; - { - // We don't support rendering Generators because it's a mutation. - // See https://github.com/facebook/react/issues/12995 - if ( - typeof Symbol === "function" && // $FlowFixMe[prop-missing] Flow doesn't know about toStringTag - newChildrenIterable[Symbol.toStringTag] === "Generator" - ) { - if (!didWarnAboutGenerators) { - error( - "Using Generators as children is unsupported and will likely yield " + - "unexpected results because enumerating a generator mutates it. " + - "You may convert it to an array with `Array.from()` or the " + - "`[...spread]` operator before rendering. Keep in mind " + - "you might need to polyfill these features for older browsers." - ); - } + var nextState; - didWarnAboutGenerators = true; - } // Warn about using Maps as children + if (typeof maybeThenable.then === 'function') { + var thenable = maybeThenable; + nextState = useThenable(thenable); + } else { + var status = maybeThenable; + nextState = status; + } // The "reset state" is an object. If it changes, that means something + // requested that we reset the form. - if (newChildrenIterable.entries === iteratorFn) { - if (!didWarnAboutMaps) { - error( - "Using Maps as children is not supported. " + - "Use an array of keyed ReactElements instead." - ); - } - didWarnAboutMaps = true; - } // First, validate keys. - // We'll get a different iterator later for the main pass. + var _dispatcher$useState2 = dispatcher.useState(), + nextResetState = _dispatcher$useState2[0]; - var _newChildren = iteratorFn.call(newChildrenIterable); + var prevResetState = currentHook !== null ? currentHook.memoizedState : null; - if (_newChildren) { - var knownKeys = null; + if (prevResetState !== nextResetState) { + // Schedule a form reset + currentlyRenderingFiber$1.flags |= FormReset; + } - var _step = _newChildren.next(); + return nextState; +} +function bailoutHooks(current, workInProgress, lanes) { + workInProgress.updateQueue = current.updateQueue; // TODO: Don't need to reset the flags here, because they're reset in the + // complete phase (bubbleProperties). - for (; !_step.done; _step = _newChildren.next()) { - var child = _step.value; - knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); - } - } - } + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags &= ~(MountPassiveDev | MountLayoutDev | Passive$1 | Update); + } else { + workInProgress.flags &= ~(Passive$1 | Update); + } - var newChildren = iteratorFn.call(newChildrenIterable); + current.lanes = removeLanes(current.lanes, lanes); +} +function resetHooksAfterThrow() { + // This is called immediaetly after a throw. It shouldn't reset the entire + // module state, because the work loop might decide to replay the component + // again without rewinding. + // + // It should only reset things like the current dispatcher, to prevent hooks + // from being called outside of a component. + currentlyRenderingFiber$1 = null; // We can assume the previous dispatcher is always this one, since we set it + // at the beginning of the render phase and there's no re-entrance. + + ReactSharedInternals.H = ContextOnlyDispatcher; +} +function resetHooksOnUnwind(workInProgress) { + if (didScheduleRenderPhaseUpdate) { + // There were render phase updates. These are only valid for this render + // phase, which we are now aborting. Remove the updates from the queues so + // they do not persist to the next render. Do not remove updates from hooks + // that weren't processed. + // + // Only reset the updates from the queue if it has a clone. If it does + // not have a clone, that means it wasn't processed, and the updates were + // scheduled before we entered the render phase. + var hook = workInProgress.memoizedState; - if (newChildren == null) { - throw new Error("An iterable object provided no iterator."); - } + while (hook !== null) { + var queue = hook.queue; - var resultingFirstChild = null; - var previousNewFiber = null; - var oldFiber = currentFirstChild; - var lastPlacedIndex = 0; - var newIdx = 0; - var nextOldFiber = null; - var step = newChildren.next(); + if (queue !== null) { + queue.pending = null; + } - for ( - ; - oldFiber !== null && !step.done; - newIdx++, step = newChildren.next() - ) { - if (oldFiber.index > newIdx) { - nextOldFiber = oldFiber; - oldFiber = null; - } else { - nextOldFiber = oldFiber.sibling; - } + hook = hook.next; + } - var newFiber = updateSlot( - returnFiber, - oldFiber, - step.value, - lanes, - debugInfo - ); - - if (newFiber === null) { - // TODO: This breaks on empty slots like null children. That's - // unfortunate because it triggers the slow path all the time. We need - // a better way to communicate whether this was a miss or null, - // boolean, undefined, etc. - if (oldFiber === null) { - oldFiber = nextOldFiber; - } + didScheduleRenderPhaseUpdate = false; + } - break; - } + renderLanes = NoLanes; + currentlyRenderingFiber$1 = null; + currentHook = null; + workInProgressHook = null; - if (shouldTrackSideEffects) { - if (oldFiber && newFiber.alternate === null) { - // We matched the slot, but we didn't reuse the existing fiber, so we - // need to delete the existing child. - deleteChild(returnFiber, oldFiber); - } - } + { + hookTypesDev = null; + hookTypesUpdateIndexDev = -1; + currentHookNameInDev = null; + } - lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + didScheduleRenderPhaseUpdateDuringThisPass = false; + thenableIndexCounter = 0; + thenableState = null; +} - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = newFiber; - } else { - // TODO: Defer siblings if we're not at the right index for this slot. - // I.e. if we had null values before, then we want to defer this - // for each null value. However, we also don't want to call updateSlot - // with the previous one. - previousNewFiber.sibling = newFiber; - } +function mountWorkInProgressHook() { + var hook = { + memoizedState: null, + baseState: null, + baseQueue: null, + queue: null, + next: null + }; + + if (workInProgressHook === null) { + // This is the first hook in the list + currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook; + } else { + // Append to the end of the list + workInProgressHook = workInProgressHook.next = hook; + } + + return workInProgressHook; +} - previousNewFiber = newFiber; - oldFiber = nextOldFiber; - } +function updateWorkInProgressHook() { + // This function is used both for updates and for re-renders triggered by a + // render phase update. It assumes there is either a current hook we can + // clone, or a work-in-progress hook from a previous render pass that we can + // use as a base. + var nextCurrentHook; + + if (currentHook === null) { + var current = currentlyRenderingFiber$1.alternate; + + if (current !== null) { + nextCurrentHook = current.memoizedState; + } else { + nextCurrentHook = null; + } + } else { + nextCurrentHook = currentHook.next; + } + + var nextWorkInProgressHook; + + if (workInProgressHook === null) { + nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState; + } else { + nextWorkInProgressHook = workInProgressHook.next; + } + + if (nextWorkInProgressHook !== null) { + // There's already a work-in-progress. Reuse it. + workInProgressHook = nextWorkInProgressHook; + nextWorkInProgressHook = workInProgressHook.next; + currentHook = nextCurrentHook; + } else { + // Clone from the current hook. + if (nextCurrentHook === null) { + var currentFiber = currentlyRenderingFiber$1.alternate; + + if (currentFiber === null) { + // This is the initial render. This branch is reached when the component + // suspends, resumes, then renders an additional hook. + // Should never be reached because we should switch to the mount dispatcher first. + throw new Error('Update hook called on initial render. This is likely a bug in React. Please file an issue.'); + } else { + // This is an update. We should always have a current hook. + throw new Error('Rendered more hooks than during the previous render.'); + } + } - if (step.done) { - // We've reached the end of the new children. We can delete the rest. - deleteRemainingChildren(returnFiber, oldFiber); + currentHook = nextCurrentHook; + var newHook = { + memoizedState: currentHook.memoizedState, + baseState: currentHook.baseState, + baseQueue: currentHook.baseQueue, + queue: currentHook.queue, + next: null + }; - return resultingFirstChild; - } + if (workInProgressHook === null) { + // This is the first hook in the list. + currentlyRenderingFiber$1.memoizedState = workInProgressHook = newHook; + } else { + // Append to the end of the list. + workInProgressHook = workInProgressHook.next = newHook; + } + } - if (oldFiber === null) { - // If we don't have any more existing children we can choose a fast path - // since the rest will all be insertions. - for (; !step.done; newIdx++, step = newChildren.next()) { - var _newFiber3 = createChild( - returnFiber, - step.value, - lanes, - debugInfo - ); + return workInProgressHook; +} // NOTE: defining two versions of this function to avoid size impact when this feature is disabled. +// Previously this function was inlined, the additional `memoCache` property makes it not inlined. - if (_newFiber3 === null) { - continue; - } - lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx); +var createFunctionComponentUpdateQueue; - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = _newFiber3; - } else { - previousNewFiber.sibling = _newFiber3; - } +{ + createFunctionComponentUpdateQueue = function () { + return { + lastEffect: null, + events: null, + stores: null, + memoCache: null + }; + }; +} - previousNewFiber = _newFiber3; - } +function useThenable(thenable) { + // Track the position of the thenable within this fiber. + var index = thenableIndexCounter; + thenableIndexCounter += 1; - return resultingFirstChild; - } // Add all children to a key map for quick lookups. - - var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - - for (; !step.done; newIdx++, step = newChildren.next()) { - var _newFiber4 = updateFromMap( - existingChildren, - returnFiber, - newIdx, - step.value, - lanes, - debugInfo - ); - - if (_newFiber4 !== null) { - if (shouldTrackSideEffects) { - if (_newFiber4.alternate !== null) { - // The new fiber is a work in progress, but if there exists a - // current, that means that we reused the fiber. We need to delete - // it from the child list so that we don't add it to the deletion - // list. - existingChildren.delete( - _newFiber4.key === null ? newIdx : _newFiber4.key - ); - } - } + if (thenableState === null) { + thenableState = createThenableState(); + } - lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx); + var result = trackUsedThenable(thenableState, thenable, index); - if (previousNewFiber === null) { - resultingFirstChild = _newFiber4; - } else { - previousNewFiber.sibling = _newFiber4; - } + if (currentlyRenderingFiber$1.alternate === null && (workInProgressHook === null ? currentlyRenderingFiber$1.memoizedState === null : workInProgressHook.next === null)) { + // Initial render, and either this is the first time the component is + // called, or there were no Hooks called after this use() the previous + // time (perhaps because it threw). Subsequent Hook calls should use the + // mount dispatcher. + { + ReactSharedInternals.H = HooksDispatcherOnMountInDEV; + } + } - previousNewFiber = _newFiber4; - } - } + return result; +} - if (shouldTrackSideEffects) { - // Any existing children that weren't consumed above were deleted. We need - // to add them to the deletion list. - existingChildren.forEach(function (child) { - return deleteChild(returnFiber, child); - }); - } +function use(usable) { + if (usable !== null && typeof usable === 'object') { + // $FlowFixMe[method-unbinding] + if (typeof usable.then === 'function') { + // This is a thenable. + var thenable = usable; + return useThenable(thenable); + } else if (usable.$$typeof === REACT_CONTEXT_TYPE) { + var context = usable; + return readContext(context); + } + } // eslint-disable-next-line react-internal/safe-string-coercion - return resultingFirstChild; - } - function reconcileSingleTextNode( - returnFiber, - currentFirstChild, - textContent, - lanes - ) { - // There's no need to check for keys on text nodes since we don't have a - // way to define them. - if (currentFirstChild !== null && currentFirstChild.tag === HostText) { - // We already have an existing node so let's just update it and delete - // the rest. - deleteRemainingChildren(returnFiber, currentFirstChild.sibling); - var existing = useFiber(currentFirstChild, textContent); - existing.return = returnFiber; - return existing; - } // The existing first child is not a text node so we need to create one - // and delete the existing ones. - - deleteRemainingChildren(returnFiber, currentFirstChild); - var created = createFiberFromText(textContent, returnFiber.mode, lanes); - created.return = returnFiber; - return created; - } - - function reconcileSingleElement( - returnFiber, - currentFirstChild, - element, - lanes, - debugInfo - ) { - var key = element.key; - var child = currentFirstChild; - - while (child !== null) { - // TODO: If key === null and child.key === null, then this only applies to - // the first item in the list. - if (child.key === key) { - var elementType = element.type; - - if (elementType === REACT_FRAGMENT_TYPE) { - if (child.tag === Fragment) { - deleteRemainingChildren(returnFiber, child.sibling); - var existing = useFiber(child, element.props.children); - existing.return = returnFiber; + throw new Error('An unsupported type was passed to use(): ' + String(usable)); +} - { - existing._debugOwner = element._owner; - existing._debugInfo = debugInfo; - } +function useMemoCache(size) { + var memoCache = null; // Fast-path, load memo cache from wip fiber if already prepared - return existing; - } - } else { - if ( - child.elementType === elementType || // Keep this check inline so it only runs on the false path: - isCompatibleFamilyForHotReloading(child, element) || // Lazy types should reconcile their resolved type. - // We need to do this after the Hot Reloading check above, - // because hot reloading has different semantics than prod because - // it doesn't resuspend. So we can't let the call below suspend. - (typeof elementType === "object" && - elementType !== null && - elementType.$$typeof === REACT_LAZY_TYPE && - resolveLazy(elementType) === child.type) - ) { - deleteRemainingChildren(returnFiber, child.sibling); + var updateQueue = currentlyRenderingFiber$1.updateQueue; - var _existing = useFiber(child, element.props); + if (updateQueue !== null) { + memoCache = updateQueue.memoCache; + } // Otherwise clone from the current fiber - coerceRef(returnFiber, child, _existing, element); - _existing.return = returnFiber; - { - _existing._debugOwner = element._owner; - _existing._debugInfo = debugInfo; - } + if (memoCache == null) { + var current = currentlyRenderingFiber$1.alternate; - return _existing; - } - } // Didn't match. + if (current !== null) { + var currentUpdateQueue = current.updateQueue; - deleteRemainingChildren(returnFiber, child); - break; - } else { - deleteChild(returnFiber, child); - } + if (currentUpdateQueue !== null) { + var currentMemoCache = currentUpdateQueue.memoCache; - child = child.sibling; + if (currentMemoCache != null) { + memoCache = { + data: currentMemoCache.data.map(function (array) { + return array.slice(); + }), + index: 0 + }; } + } + } + } // Finally fall back to allocating a fresh instance of the cache - if (element.type === REACT_FRAGMENT_TYPE) { - var created = createFiberFromFragment( - element.props.children, - returnFiber.mode, - lanes, - element.key - ); - created.return = returnFiber; - { - created._debugInfo = debugInfo; - } + if (memoCache == null) { + memoCache = { + data: [], + index: 0 + }; + } - return created; - } else { - var _created4 = createFiberFromElement( - element, - returnFiber.mode, - lanes - ); + if (updateQueue === null) { + updateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = updateQueue; + } - coerceRef(returnFiber, currentFirstChild, _created4, element); - _created4.return = returnFiber; + updateQueue.memoCache = memoCache; + var data = memoCache.data[memoCache.index]; - { - _created4._debugInfo = debugInfo; - } + if (data === undefined) { + data = memoCache.data[memoCache.index] = new Array(size); - return _created4; - } - } - - function reconcileSinglePortal( - returnFiber, - currentFirstChild, - portal, - lanes, - debugInfo - ) { - var key = portal.key; - var child = currentFirstChild; - - while (child !== null) { - // TODO: If key === null and child.key === null, then this only applies to - // the first item in the list. - if (child.key === key) { - if ( - child.tag === HostPortal && - child.stateNode.containerInfo === portal.containerInfo && - child.stateNode.implementation === portal.implementation - ) { - deleteRemainingChildren(returnFiber, child.sibling); - var existing = useFiber(child, portal.children || []); - existing.return = returnFiber; - return existing; - } else { - deleteRemainingChildren(returnFiber, child); - break; - } - } else { - deleteChild(returnFiber, child); - } + for (var i = 0; i < size; i++) { + data[i] = REACT_MEMO_CACHE_SENTINEL; + } + } else if (data.length !== size) { + // TODO: consider warning or throwing here + { + error('Expected a constant size argument for each invocation of useMemoCache. ' + 'The previous cache was allocated with size %s but size %s was requested.', data.length, size); + } + } - child = child.sibling; - } - - var created = createFiberFromPortal(portal, returnFiber.mode, lanes); - created.return = returnFiber; - return created; - } // This API will tag the children with the side-effect of the reconciliation - // itself. They will be added to the side-effect list as we pass through the - // children and the parent. - - function reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - newChild, - lanes, - debugInfo - ) { - // This function is only recursive for Usables/Lazy and not nested arrays. - // That's so that using a Lazy wrapper is unobservable to the Fragment - // convention. - // If the top level item is an array, we treat it as a set of children, - // not as a fragment. Nested arrays on the other hand will be treated as - // fragment nodes. Recursion happens at the normal flow. - // Handle top level unkeyed fragments as if they were arrays. - // This leads to an ambiguity between <>{[...]} and <>.... - // We treat the ambiguous cases above the same. - // We don't use recursion here because a fragment inside a fragment - // is no longer considered "top level" for these purposes. - var isUnkeyedTopLevelFragment = - typeof newChild === "object" && - newChild !== null && - newChild.type === REACT_FRAGMENT_TYPE && - newChild.key === null; - - if (isUnkeyedTopLevelFragment) { - newChild = newChild.props.children; - } // Handle object types - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: - return placeSingleChild( - reconcileSingleElement( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ) - ); - - case REACT_PORTAL_TYPE: - return placeSingleChild( - reconcileSinglePortal( - returnFiber, - currentFirstChild, - newChild, - lanes - ) - ); - - case REACT_LAZY_TYPE: - var payload = newChild._payload; - var init = newChild._init; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + memoCache.index++; + return data; +} - if (isArray(newChild)) { - return reconcileChildrenArray( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } +function basicStateReducer(state, action) { + // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + return typeof action === 'function' ? action(state) : action; +} - if (getIteratorFn(newChild)) { - return reconcileChildrenIterator( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usables are a valid React node type. When React encounters a Usable in - // a child position, it unwraps it using the same algorithm as `use`. For - // example, for promises, React will throw an exception to unwind the - // stack, then replay the component once the promise resolves. - // - // A difference from `use` is that React will keep unwrapping the value - // until it reaches a non-Usable type. - // - // e.g. Usable>> should resolve to T - // - // The structure is a bit unfortunate. Ideally, we shouldn't need to - // replay the entire begin phase of the parent fiber in order to reconcile - // the children again. This would require a somewhat significant refactor, - // because reconcilation happens deep within the begin phase, and - // depending on the type of work, not always at the end. We should - // consider as an future improvement. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - unwrapThenable(thenable), - lanes, - mergeDebugInfo(debugInfo, thenable._debugInfo) - ); - } +function mountReducer(reducer, initialArg, init) { + var hook = mountWorkInProgressHook(); + var initialState; + + if (init !== undefined) { + initialState = init(initialArg); + + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + init(initialArg); + setIsStrictModeForDevtools(false); + } + } else { + initialState = initialArg; + } + + hook.memoizedState = hook.baseState = initialState; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: reducer, + lastRenderedState: initialState + }; + hook.queue = queue; + var dispatch = queue.dispatch = dispatchReducerAction.bind(null, currentlyRenderingFiber$1, queue); + return [hook.memoizedState, dispatch]; +} - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } +function updateReducer(reducer, initialArg, init) { + var hook = updateWorkInProgressHook(); + return updateReducerImpl(hook, currentHook, reducer); +} - throwOnInvalidObjectType(returnFiber, newChild); - } +function updateReducerImpl(hook, current, reducer) { + var queue = hook.queue; - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - return placeSingleChild( - reconcileSingleTextNode( - returnFiber, - currentFirstChild, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes - ) - ); - } + if (queue === null) { + throw new Error('Should have a queue. This is likely a bug in React. Please file an issue.'); + } - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } + queue.lastRenderedReducer = reducer; // The last rebase update that is NOT part of the base state. - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } - } // Remaining cases are all treated as empty. + var baseQueue = hook.baseQueue; // The last pending update that hasn't been processed yet. - return deleteRemainingChildren(returnFiber, currentFirstChild); - } + var pendingQueue = queue.pending; - function reconcileChildFibers( - returnFiber, - currentFirstChild, - newChild, - lanes - ) { - // This indirection only exists so we can reset `thenableState` at the end. - // It should get inlined by Closure. - thenableIndexCounter$1 = 0; - var firstChildFiber = reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - newChild, - lanes, - null // debugInfo - ); - thenableState$1 = null; // Don't bother to reset `thenableIndexCounter` to 0 because it always gets - // set at the beginning. + if (pendingQueue !== null) { + // We have new updates that haven't been processed yet. + // We'll add them to the base queue. + if (baseQueue !== null) { + // Merge the pending queue and the base queue. + var baseFirst = baseQueue.next; + var pendingFirst = pendingQueue.next; + baseQueue.next = pendingFirst; + pendingQueue.next = baseFirst; + } - return firstChildFiber; - } + { + if (current.baseQueue !== baseQueue) { + // Internal invariant that should never happen, but feasibly could in + // the future if we implement resuming, or some form of that. + error('Internal error: Expected work-in-progress queue to be a clone. ' + 'This is a bug in React.'); + } + } + + current.baseQueue = baseQueue = pendingQueue; + queue.pending = null; + } + + var baseState = hook.baseState; + + if (baseQueue === null) { + // If there are no pending updates, then the memoized state should be the + // same as the base state. Currently these only diverge in the case of + // useOptimistic, because useOptimistic accepts a new baseState on + // every render. + hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because + // baseState is derived from other reactive values. + } else { + // We have a queue to process. + var first = baseQueue.next; + var newState = baseState; + var newBaseState = null; + var newBaseQueueFirst = null; + var newBaseQueueLast = null; + var update = first; + var didReadFromEntangledAsyncAction = false; + + do { + // An extra OffscreenLane bit is added to updates that were made to + // a hidden tree, so that we can distinguish them from updates that were + // already there when the tree was hidden. + var updateLane = removeLanes(update.lane, OffscreenLane); + var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then + // it's not a "base" update and we should disregard the extra base lanes + // that were added to renderLanes when we entered the Offscreen tree. + + var shouldSkipUpdate = isHiddenUpdate ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) : !isSubsetOfLanes(renderLanes, updateLane); + + if (shouldSkipUpdate) { + // Priority is insufficient. Skip this update. If this is the first + // skipped update, the previous update/state is the new base + // update/state. + var clone = { + lane: updateLane, + revertLane: update.revertLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; - return reconcileChildFibers; - } + if (newBaseQueueLast === null) { + newBaseQueueFirst = newBaseQueueLast = clone; + newBaseState = newState; + } else { + newBaseQueueLast = newBaseQueueLast.next = clone; + } // Update the remaining priority in the queue. + // TODO: Don't need to accumulate this. Instead, we can remove + // renderLanes from the original lanes. - var reconcileChildFibers = createChildReconciler(true); - var mountChildFibers = createChildReconciler(false); - function resetChildReconcilerOnUnwind() { - // On unwind, clear any pending thenables that were used. - thenableState$1 = null; - thenableIndexCounter$1 = 0; - } - function cloneChildFibers(current, workInProgress) { - if (current !== null && workInProgress.child !== current.child) { - throw new Error("Resuming work not yet implemented."); - } - if (workInProgress.child === null) { - return; - } + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, updateLane); + markSkippedUpdateLanes(updateLane); + } else { + // This update does have sufficient priority. + // Check if this is an optimistic update. + var revertLane = update.revertLane; + + if (!enableAsyncActions || revertLane === NoLane) { + // This is not an optimistic update, and we're going to apply it now. + // But, if there were earlier updates that were skipped, we need to + // leave this update in the queue so it can be rebased later. + if (newBaseQueueLast !== null) { + var _clone = { + // This update is going to be committed so we never want uncommit + // it. Using NoLane works because 0 is a subset of all bitmasks, so + // this will never be skipped by the check above. + lane: NoLane, + revertLane: NoLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; + newBaseQueueLast = newBaseQueueLast.next = _clone; + } // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. - var currentChild = workInProgress.child; - var newChild = createWorkInProgress( - currentChild, - currentChild.pendingProps - ); - workInProgress.child = newChild; - newChild.return = workInProgress; - while (currentChild.sibling !== null) { - currentChild = currentChild.sibling; - newChild = newChild.sibling = createWorkInProgress( - currentChild, - currentChild.pendingProps - ); - newChild.return = workInProgress; - } + if (updateLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } + } else { + // This is an optimistic update. If the "revert" priority is + // sufficient, don't apply the update. Otherwise, apply the update, + // but leave it in the queue so it can be either reverted or + // rebased in a subsequent render. + if (isSubsetOfLanes(renderLanes, revertLane)) { + // The transition that this optimistic update is associated with + // has finished. Pretend the update doesn't exist by skipping + // over it. + update = update.next; // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. - newChild.sibling = null; - } // Reset a workInProgress child set to prepare it for a second pass. + if (revertLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } - function resetChildFibers(workInProgress, lanes) { - var child = workInProgress.child; + continue; + } else { + var _clone2 = { + // Once we commit an optimistic update, we shouldn't uncommit it + // until the transition it is associated with has finished + // (represented by revertLane). Using NoLane here works because 0 + // is a subset of all bitmasks, so this will never be skipped by + // the check above. + lane: NoLane, + // Reuse the same revertLane so we know when the transition + // has finished. + revertLane: update.revertLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; - while (child !== null) { - resetWorkInProgress(child, lanes); - child = child.sibling; - } - } + if (newBaseQueueLast === null) { + newBaseQueueFirst = newBaseQueueLast = _clone2; + newBaseState = newState; + } else { + newBaseQueueLast = newBaseQueueLast.next = _clone2; + } // Update the remaining priority in the queue. + // TODO: Don't need to accumulate this. Instead, we can remove + // renderLanes from the original lanes. - // TODO: This isn't being used yet, but it's intended to replace the - // InvisibleParentContext that is currently managed by SuspenseContext. - var currentTreeHiddenStackCursor = createCursor(null); - var prevEntangledRenderLanesCursor = createCursor(NoLanes); - function pushHiddenContext(fiber, context) { - var prevEntangledRenderLanes = getEntangledRenderLanes(); - push(prevEntangledRenderLanesCursor, prevEntangledRenderLanes, fiber); - push(currentTreeHiddenStackCursor, context, fiber); // When rendering a subtree that's currently hidden, we must include all - // lanes that would have rendered if the hidden subtree hadn't been deferred. - // That is, in order to reveal content from hidden -> visible, we must commit - // all the updates that we skipped when we originally hid the tree. + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, revertLane); + markSkippedUpdateLanes(revertLane); + } + } // Process this update. - setEntangledRenderLanes( - mergeLanes(prevEntangledRenderLanes, context.baseLanes) - ); - } - function reuseHiddenContextOnStack(fiber) { - // This subtree is not currently hidden, so we don't need to add any lanes - // to the render lanes. But we still need to push something to avoid a - // context mismatch. Reuse the existing context on the stack. - push(prevEntangledRenderLanesCursor, getEntangledRenderLanes(), fiber); - push( - currentTreeHiddenStackCursor, - currentTreeHiddenStackCursor.current, - fiber - ); - } - function popHiddenContext(fiber) { - // Restore the previous render lanes from the stack - setEntangledRenderLanes(prevEntangledRenderLanesCursor.current); - pop(currentTreeHiddenStackCursor, fiber); - pop(prevEntangledRenderLanesCursor, fiber); - } - function isCurrentTreeHidden() { - return currentTreeHiddenStackCursor.current !== null; - } - // suspends, i.e. it's the nearest `catch` block on the stack. + var action = update.action; - var suspenseHandlerStackCursor = createCursor(null); // Represents the outermost boundary that is not visible in the current tree. - // Everything above this is the "shell". When this is null, it means we're - // rendering in the shell of the app. If it's non-null, it means we're rendering - // deeper than the shell, inside a new tree that wasn't already visible. - // - // The main way we use this concept is to determine whether showing a fallback - // would result in a desirable or undesirable loading state. Activing a fallback - // in the shell is considered an undersirable loading state, because it would - // mean hiding visible (albeit stale) content in the current tree — we prefer to - // show the stale content, rather than switch to a fallback. But showing a - // fallback in a new tree is fine, because there's no stale content to - // prefer instead. - - var shellBoundary = null; - function getShellBoundary() { - return shellBoundary; - } - function pushPrimaryTreeSuspenseHandler(handler) { - // TODO: Pass as argument - var current = handler.alternate; - // propagated a single level. For example, when ForceSuspenseFallback is set, - // it should only force the nearest Suspense boundary into fallback mode. - - pushSuspenseListContext( - handler, - setDefaultShallowSuspenseListContext(suspenseStackCursor.current) - ); // Experimental feature: Some Suspense boundaries are marked as having an - // to push a nested Suspense handler, because it will get replaced by the - // outer fallback, anyway. Consider this as a future optimization. - - push(suspenseHandlerStackCursor, handler, handler); - - if (shellBoundary === null) { - if (current === null || isCurrentTreeHidden()) { - // This boundary is not visible in the current UI. - shellBoundary = handler; - } else { - var prevState = current.memoizedState; + if (shouldDoubleInvokeUserFnsInHooksDEV) { + reducer(newState, action); + } - if (prevState !== null) { - // This boundary is showing a fallback in the current UI. - shellBoundary = handler; - } + if (update.hasEagerState) { + // If this update is a state update (not a reducer) and was processed eagerly, + // we can use the eagerly computed state + newState = update.eagerState; + } else { + newState = reducer(newState, action); } } - } - function pushFallbackTreeSuspenseHandler(fiber) { - // We're about to render the fallback. If something in the fallback suspends, - // it's akin to throwing inside of a `catch` block. This boundary should not - // capture. Reuse the existing handler on the stack. - reuseSuspenseHandlerOnStack(fiber); - } - function pushOffscreenSuspenseHandler(fiber) { - if (fiber.tag === OffscreenComponent) { - // A SuspenseList context is only pushed here to avoid a push/pop mismatch. - // Reuse the current value on the stack. - // TODO: We can avoid needing to push here by by forking popSuspenseHandler - // into separate functions for Suspense and Offscreen. - pushSuspenseListContext(fiber, suspenseStackCursor.current); - push(suspenseHandlerStackCursor, fiber, fiber); - if (shellBoundary !== null); - else { - var current = fiber.alternate; + update = update.next; + } while (update !== null && update !== first); - if (current !== null) { - var prevState = current.memoizedState; + if (newBaseQueueLast === null) { + newBaseState = newState; + } else { + newBaseQueueLast.next = newBaseQueueFirst; + } // Mark that the fiber performed work, but only if the new state is + // different from the current state. - if (prevState !== null) { - // This is the first boundary in the stack that's already showing - // a fallback. So everything outside is considered the shell. - shellBoundary = fiber; - } - } + + if (!objectIs(newState, hook.memoizedState)) { + markWorkInProgressReceivedUpdate(); // Check if this update is part of a pending async action. If so, we'll + // need to suspend until the action has finished, so that it's batched + // together with future updates in the same action. + // TODO: Once we support hooks inside useMemo (or an equivalent + // memoization boundary like Forget), hoist this logic so that it only + // suspends if the memo boundary produces a new value. + + if (didReadFromEntangledAsyncAction) { + var entangledActionThenable = peekEntangledActionThenable(); + + if (entangledActionThenable !== null) { + // TODO: Instead of the throwing the thenable directly, throw a + // special object like `use` does so we can detect if it's captured + // by userspace. + throw entangledActionThenable; } - } else { - // This is a LegacyHidden component. - reuseSuspenseHandlerOnStack(fiber); } } - function reuseSuspenseHandlerOnStack(fiber) { - pushSuspenseListContext(fiber, suspenseStackCursor.current); - push(suspenseHandlerStackCursor, getSuspenseHandler(), fiber); - } - function getSuspenseHandler() { - return suspenseHandlerStackCursor.current; - } - function popSuspenseHandler(fiber) { - pop(suspenseHandlerStackCursor, fiber); - - if (shellBoundary === fiber) { - // Popping back into the shell. - shellBoundary = null; - } - popSuspenseListContext(fiber); - } // SuspenseList context - // TODO: Move to a separate module? We may change the SuspenseList - // implementation to hide/show in the commit phase, anyway. + hook.memoizedState = newState; + hook.baseState = newBaseState; + hook.baseQueue = newBaseQueueLast; + queue.lastRenderedState = newState; + } - var DefaultSuspenseContext = 0; - var SubtreeSuspenseContextMask = 1; // ForceSuspenseFallback can be used by SuspenseList to force newly added - // items into their fallback state during one of the render passes. + if (baseQueue === null) { + // `queue.lanes` is used for entangling transitions. We can set it back to + // zero once the queue is empty. + queue.lanes = NoLanes; + } - var ForceSuspenseFallback = 2; - var suspenseStackCursor = createCursor(DefaultSuspenseContext); - function hasSuspenseListContext(parentContext, flag) { - return (parentContext & flag) !== 0; - } - function setDefaultShallowSuspenseListContext(parentContext) { - return parentContext & SubtreeSuspenseContextMask; - } - function setShallowSuspenseListContext(parentContext, shallowContext) { - return (parentContext & SubtreeSuspenseContextMask) | shallowContext; - } - function pushSuspenseListContext(fiber, newContext) { - push(suspenseStackCursor, newContext, fiber); - } - function popSuspenseListContext(fiber) { - pop(suspenseStackCursor, fiber); - } + var dispatch = queue.dispatch; + return [hook.memoizedState, dispatch]; +} - // A non-null SuspenseState means that it is blocked for one reason or another. - // - A non-null dehydrated field means it's blocked pending hydration. - // - A non-null dehydrated field can use isSuspenseInstancePending or - // isSuspenseInstanceFallback to query the reason for being dehydrated. - // - A null dehydrated field means it's blocked by something suspending and - // we're currently showing a fallback instead. +function rerenderReducer(reducer, initialArg, init) { + var hook = updateWorkInProgressHook(); + var queue = hook.queue; - function findFirstSuspended(row) { - var node = row; + if (queue === null) { + throw new Error('Should have a queue. This is likely a bug in React. Please file an issue.'); + } - while (node !== null) { - if (node.tag === SuspenseComponent) { - var state = node.memoizedState; + queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous + // work-in-progress hook. - if (state !== null) { - var dehydrated = state.dehydrated; + var dispatch = queue.dispatch; + var lastRenderPhaseUpdate = queue.pending; + var newState = hook.memoizedState; - if ( - dehydrated === null || - isSuspenseInstancePending() || - isSuspenseInstanceFallback() - ) { - return node; - } - } - } else if ( - node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't - // keep track of whether it suspended or not. - node.memoizedProps.revealOrder !== undefined - ) { - var didSuspend = (node.flags & DidCapture) !== NoFlags$1; - - if (didSuspend) { - return node; - } - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + if (lastRenderPhaseUpdate !== null) { + // The queue doesn't persist past this render pass. + queue.pending = null; + var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next; + var update = firstRenderPhaseUpdate; - if (node === row) { - return null; - } + do { + // Process this render phase update. We don't have to check the + // priority because it will always be the same as the current + // render's. + var action = update.action; + newState = reducer(newState, action); + update = update.next; + } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is + // different from the current state. - while (node.sibling === null) { - if (node.return === null || node.return === row) { - return null; - } - node = node.return; - } + if (!objectIs(newState, hook.memoizedState)) { + markWorkInProgressReceivedUpdate(); + } - node.sibling.return = node.return; - node = node.sibling; - } + hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to + // the base state unless the queue is empty. + // TODO: Not sure if this is the desired semantics, but it's what we + // do for gDSFP. I can't remember why. - return null; + if (hook.baseQueue === null) { + hook.baseState = newState; } - var NoFlags = - /* */ - 0; // Represents whether effect should fire. + queue.lastRenderedState = newState; + } - var HasEffect = - /* */ - 1; // Represents the phase in which the effect (not the clean-up) fires. + return [newState, dispatch]; +} - var Insertion = - /* */ - 2; - var Layout = - /* */ - 4; - var Passive = - /* */ - 8; +function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { + var fiber = currentlyRenderingFiber$1; + var hook = mountWorkInProgressHook(); + var nextSnapshot; - var didWarnAboutMismatchedHooksForComponent; - var didWarnUncachedGetSnapshot; - var didWarnAboutUseWrappedInTryCatch; - var didWarnAboutAsyncClientComponent; - var didWarnAboutUseFormState; + { + nextSnapshot = getSnapshot(); { - didWarnAboutMismatchedHooksForComponent = new Set(); - didWarnAboutUseWrappedInTryCatch = new Set(); - didWarnAboutAsyncClientComponent = new Set(); - didWarnAboutUseFormState = new Set(); - } // The effect "instance" is a shared object that remains the same for the entire - // lifetime of an effect. In Rust terms, a RefCell. We use it to store the - // "destroy" function that is returned from an effect, because that is stateful. - // The field is `undefined` if the effect is unmounted, or if the effect ran - // but is not stateful. We don't explicitly track whether the effect is mounted - // or unmounted because that can be inferred by the hiddenness of the fiber in - // the tree, i.e. whether there is a hidden Offscreen fiber above it. - // - // It's unfortunate that this is stored on a separate object, because it adds - // more memory per effect instance, but it's conceptually sound. I think there's - // likely a better data structure we could use for effects; perhaps just one - // array of effect instances per fiber. But I think this is OK for now despite - // the additional memory and we can follow up with performance - // optimizations later. - // These are set right before calling the component. - - var renderLanes = NoLanes; // The work-in-progress fiber. I've named it differently to distinguish it from - // the work-in-progress hook. - - var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The - // current hook list is the list that belongs to the current fiber. The - // work-in-progress hook list is a new list that will be added to the - // work-in-progress fiber. - - var currentHook = null; - var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This - // does not get reset if we do another render pass; only when we're completely - // finished evaluating this component. This is an optimization so we know - // whether we need to clear render phase updates after a throw. - - var didScheduleRenderPhaseUpdate = false; // Where an update was scheduled only during the current render pass. This - // gets reset after each attempt. - // TODO: Maybe there's some way to consolidate this with - // `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`. - - var didScheduleRenderPhaseUpdateDuringThisPass = false; - var shouldDoubleInvokeUserFnsInHooksDEV = false; // Counts the number of useId hooks in this component. - - var thenableIndexCounter = 0; - var thenableState = null; // Used for ids that are generated completely client-side (i.e. not during - // hydration). This counter is global, so client ids are not stable across - // render attempts. - - var globalClientIdCounter = 0; - var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook - - var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders. - // The list stores the order of hooks used during the initial render (mount). - // Subsequent renders (updates) reference this list. - - var hookTypesDev = null; - var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore - // the dependencies for Hooks that need them (e.g. useEffect or useMemo). - // When true, such Hooks will always be "remounted". Only used during hot reload. - - var ignorePreviousDependencies = false; - - function mountHookTypesDev() { - { - var hookName = currentHookNameInDev; + if (!didWarnUncachedGetSnapshot) { + var cachedSnapshot = getSnapshot(); - if (hookTypesDev === null) { - hookTypesDev = [hookName]; - } else { - hookTypesDev.push(hookName); + if (!objectIs(nextSnapshot, cachedSnapshot)) { + error('The result of getSnapshot should be cached to avoid an infinite loop'); + + didWarnUncachedGetSnapshot = true; } } - } + } // Unless we're rendering a blocking lane, schedule a consistency check. + // Right before committing, we will walk the tree and check if any of the + // stores were mutated. + // + // We won't do this if we're hydrating server-rendered content, because if + // the content is stale, it's already visible anyway. Instead we'll patch + // it up in a passive effect. - function updateHookTypesDev() { - { - var hookName = currentHookNameInDev; - if (hookTypesDev !== null) { - hookTypesUpdateIndexDev++; + var root = getWorkInProgressRoot(); - if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) { - warnOnHookMismatchInDev(hookName); - } - } - } + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } - function checkDepsAreArrayDev(deps) { - { - if (deps !== undefined && deps !== null && !isArray(deps)) { - // Verify deps, but only on mount to avoid extra checks. - // It's unlikely their type would change as usually you define them inline. - error( - "%s received a final argument that is not an array (instead, received `%s`). When " + - "specified, the final argument must be an array.", - currentHookNameInDev, - typeof deps - ); - } - } + var rootRenderLanes = getWorkInProgressRootRenderLanes(); + + if (!includesBlockingLane(root, rootRenderLanes)) { + pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); } + } // Read the current snapshot from the store on every render. This breaks the + // normal rules of React, and only works because store updates are + // always synchronous. - function warnOnHookMismatchInDev(currentHookName) { - { - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); - - if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) { - didWarnAboutMismatchedHooksForComponent.add(componentName); - - if (hookTypesDev !== null) { - var table = ""; - var secondColumnStart = 30; - - for (var i = 0; i <= hookTypesUpdateIndexDev; i++) { - var oldHookName = hookTypesDev[i]; - var newHookName = - i === hookTypesUpdateIndexDev ? currentHookName : oldHookName; - var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up - // lol @ IE not supporting String#repeat - - while (row.length < secondColumnStart) { - row += " "; - } - row += newHookName + "\n"; - table += row; - } + hook.memoizedState = nextSnapshot; + var inst = { + value: nextSnapshot, + getSnapshot: getSnapshot + }; + hook.queue = inst; // Schedule an effect to subscribe to the store. - error( - "React has detected a change in the order of Hooks called by %s. " + - "This will lead to bugs and errors if not fixed. " + - "For more information, read the Rules of Hooks: https://react.dev/link/rules-of-hooks\n\n" + - " Previous render Next render\n" + - " ------------------------------------------------------\n" + - "%s" + - " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n", - componentName, - table - ); - } - } - } - } + mountEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [subscribe]); // Schedule an effect to update the mutable instance fields. We will update + // this whenever subscribe, getSnapshot, or value changes. Because there's no + // clean-up function, and we track the deps correctly, we can call pushEffect + // directly, without storing any additional state. For the same reason, we + // don't need to set a static flag, either. - function warnOnUseFormStateInDev() { - { - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); + fiber.flags |= Passive$1; + pushEffect(HasEffect | Passive, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), createEffectInstance(), null); + return nextSnapshot; +} - if (!didWarnAboutUseFormState.has(componentName)) { - didWarnAboutUseFormState.add(componentName); +function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { + var fiber = currentlyRenderingFiber$1; + var hook = updateWorkInProgressHook(); // Read the current snapshot from the store on every render. This breaks the + // normal rules of React, and only works because store updates are + // always synchronous. - error( - "ReactDOM.useFormState has been renamed to React.useActionState. " + - "Please update %s to use React.useActionState.", - componentName - ); - } - } - } + var nextSnapshot; - function warnIfAsyncClientComponent(Component) { - { - // This dev-only check only works for detecting native async functions, - // not transpiled ones. There's also a prod check that we use to prevent - // async client components from crashing the app; the prod one works even - // for transpiled async functions. Neither mechanism is completely - // bulletproof but together they cover the most common cases. - var isAsyncFunction = // $FlowIgnore[method-unbinding] - Object.prototype.toString.call(Component) === - "[object AsyncFunction]"; - - if (isAsyncFunction) { - // Encountered an async Client Component. This is not yet supported. - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); - - if (!didWarnAboutAsyncClientComponent.has(componentName)) { - didWarnAboutAsyncClientComponent.add(componentName); - - error( - "async/await is not yet supported in Client Components, only " + - "Server Components. This error is often caused by accidentally " + - "adding `'use client'` to a module that was originally written " + - "for the server." - ); - } - } - } - } + { + nextSnapshot = getSnapshot(); - function throwInvalidHookError() { - throw new Error( - "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for" + - " one of the following reasons:\n" + - "1. You might have mismatching versions of React and the renderer (such as React DOM)\n" + - "2. You might be breaking the Rules of Hooks\n" + - "3. You might have more than one copy of React in the same app\n" + - "See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem." - ); - } + { + if (!didWarnUncachedGetSnapshot) { + var cachedSnapshot = getSnapshot(); - function areHookInputsEqual(nextDeps, prevDeps) { - { - if (ignorePreviousDependencies) { - // Only true when this component is being hot reloaded. - return false; - } - } + if (!objectIs(nextSnapshot, cachedSnapshot)) { + error('The result of getSnapshot should be cached to avoid an infinite loop'); - if (prevDeps === null) { - { - error( - "%s received a final argument during this render, but not during " + - "the previous render. Even though the final argument is optional, " + - "its type cannot change between renders.", - currentHookNameInDev - ); + didWarnUncachedGetSnapshot = true; } - - return false; } + } + } - { - // Don't bother comparing lengths in prod because these arrays should be - // passed inline. - if (nextDeps.length !== prevDeps.length) { - error( - "The final argument passed to %s changed size between renders. The " + - "order and size of this array must remain constant.\n\n" + - "Previous: %s\n" + - "Incoming: %s", - currentHookNameInDev, - "[" + prevDeps.join(", ") + "]", - "[" + nextDeps.join(", ") + "]" - ); - } - } // $FlowFixMe[incompatible-use] found when upgrading Flow - - for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (objectIs(nextDeps[i], prevDeps[i])) { - continue; - } + var prevSnapshot = (currentHook || hook).memoizedState; + var snapshotChanged = !objectIs(prevSnapshot, nextSnapshot); - return false; - } + if (snapshotChanged) { + hook.memoizedState = nextSnapshot; + markWorkInProgressReceivedUpdate(); + } - return true; - } + var inst = hook.queue; + updateEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [subscribe]); // Whenever getSnapshot or subscribe changes, we need to check in the + // commit phase if there was an interleaved mutation. In concurrent mode + // this can happen all the time, but even in synchronous mode, an earlier + // effect may have mutated the store. - function renderWithHooks( - current, - workInProgress, - Component, - props, - secondArg, - nextRenderLanes - ) { - renderLanes = nextRenderLanes; - currentlyRenderingFiber$1 = workInProgress; + if (inst.getSnapshot !== getSnapshot || snapshotChanged || // Check if the subscribe function changed. We can save some memory by + // checking whether we scheduled a subscription effect above. + workInProgressHook !== null && workInProgressHook.memoizedState.tag & HasEffect) { + fiber.flags |= Passive$1; + pushEffect(HasEffect | Passive, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), createEffectInstance(), null); // Unless we're rendering a blocking lane, schedule a consistency check. + // Right before committing, we will walk the tree and check if any of the + // stores were mutated. - { - hookTypesDev = current !== null ? current._debugHookTypes : null; - hookTypesUpdateIndexDev = -1; // Used for hot reloading: + var root = getWorkInProgressRoot(); - ignorePreviousDependencies = - current !== null && current.type !== workInProgress.type; - warnIfAsyncClientComponent(Component); - } + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); + } - workInProgress.memoizedState = null; - workInProgress.updateQueue = null; - workInProgress.lanes = NoLanes; // The following should have already been reset - // currentHook = null; - // workInProgressHook = null; - // didScheduleRenderPhaseUpdate = false; - // localIdCounter = 0; - // thenableIndexCounter = 0; - // thenableState = null; - // TODO Warn if no hooks are used at all during mount, then some are used during update. - // Currently we will identify the update render as a mount because memoizedState === null. - // This is tricky because it's valid for certain types of components (e.g. React.lazy) - // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used. - // Non-stateful hooks (e.g. context) don't get added to memoizedState, - // so memoizedState would be null during updates and mounts. + if (!includesBlockingLane(root, renderLanes)) { + pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); + } + } - { - if (current !== null && current.memoizedState !== null) { - ReactSharedInternals.H = HooksDispatcherOnUpdateInDEV; - } else if (hookTypesDev !== null) { - // This dispatcher handles an edge case where a component is updating, - // but no stateful hooks have been used. - // We want to match the production code behavior (which will use HooksDispatcherOnMount), - // but with the extra DEV validation to ensure hooks ordering hasn't changed. - // This dispatcher does that. - ReactSharedInternals.H = HooksDispatcherOnMountWithHookTypesInDEV; - } else { - ReactSharedInternals.H = HooksDispatcherOnMountInDEV; - } - } // In Strict Mode, during development, user functions are double invoked to - // help detect side effects. The logic for how this is implemented for in - // hook components is a bit complex so let's break it down. - // - // We will invoke the entire component function twice. However, during the - // second invocation of the component, the hook state from the first - // invocation will be reused. That means things like `useMemo` functions won't - // run again, because the deps will match and the memoized result will - // be reused. - // - // We want memoized functions to run twice, too, so account for this, user - // functions are double invoked during the *first* invocation of the component - // function, and are *not* double invoked during the second incovation: - // - // - First execution of component function: user functions are double invoked - // - Second execution of component function (in Strict Mode, during - // development): user functions are not double invoked. - // - // This is intentional for a few reasons; most importantly, it's because of - // how `use` works when something suspends: it reuses the promise that was - // passed during the first attempt. This is itself a form of memoization. - // We need to be able to memoize the reactive inputs to the `use` call using - // a hook (i.e. `useMemo`), which means, the reactive inputs to `use` must - // come from the same component invocation as the output. - // - // There are plenty of tests to ensure this behavior is correct. - - var shouldDoubleRenderDEV = - (workInProgress.mode & StrictLegacyMode) !== NoMode; - shouldDoubleInvokeUserFnsInHooksDEV = shouldDoubleRenderDEV; - var children = Component(props, secondArg); - shouldDoubleInvokeUserFnsInHooksDEV = false; // Check if there was a render phase update - - if (didScheduleRenderPhaseUpdateDuringThisPass) { - // Keep rendering until the component stabilizes (there are no more render - // phase updates). - children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); - } - - if (shouldDoubleRenderDEV) { - // In development, components are invoked twice to help detect side effects. - setIsStrictModeForDevtools(true); + return nextSnapshot; +} - try { - children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); - } finally { - setIsStrictModeForDevtools(false); - } - } +function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) { + fiber.flags |= StoreConsistency; + var check = { + getSnapshot: getSnapshot, + value: renderedSnapshot + }; + var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + + if (componentUpdateQueue === null) { + componentUpdateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; + componentUpdateQueue.stores = [check]; + } else { + var stores = componentUpdateQueue.stores; + + if (stores === null) { + componentUpdateQueue.stores = [check]; + } else { + stores.push(check); + } + } +} - finishRenderingHooks(current, workInProgress); - return children; +function updateStoreInstance(fiber, inst, nextSnapshot, getSnapshot) { + // These are updated in the passive phase + inst.value = nextSnapshot; + inst.getSnapshot = getSnapshot; // Something may have been mutated in between render and commit. This could + // have been in an event that fired before the passive effects, or it could + // have been in a layout effect. In that case, we would have used the old + // snapsho and getSnapshot values to bail out. We need to check one more time. + + if (checkIfSnapshotChanged(inst)) { + // Force a re-render. + forceStoreRerender(fiber); + } +} + +function subscribeToStore(fiber, inst, subscribe) { + var handleStoreChange = function () { + // The store changed. Check if the snapshot changed since the last time we + // read from the store. + if (checkIfSnapshotChanged(inst)) { + // Force a re-render. + forceStoreRerender(fiber); } + }; // Subscribe to the store and return a clean-up function. - function finishRenderingHooks(current, workInProgress, Component) { - { - workInProgress._debugHookTypes = hookTypesDev; - } // We can assume the previous dispatcher is always this one, since we set it - // at the beginning of the render phase and there's no re-entrance. - ReactSharedInternals.H = ContextOnlyDispatcher; // This check uses currentHook so that it works the same in DEV and prod bundles. - // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles. + return subscribe(handleStoreChange); +} - var didRenderTooFewHooks = - currentHook !== null && currentHook.next !== null; - renderLanes = NoLanes; - currentlyRenderingFiber$1 = null; - currentHook = null; - workInProgressHook = null; +function checkIfSnapshotChanged(inst) { + var latestGetSnapshot = inst.getSnapshot; + var prevValue = inst.value; - { - currentHookNameInDev = null; - hookTypesDev = null; - hookTypesUpdateIndexDev = -1; // Confirm that a static flag was not added or removed since the last - // render. If this fires, it suggests that we incorrectly reset the static - // flags in some other part of the codebase. This has happened before, for - // example, in the SuspenseList implementation. - - if ( - current !== null && - (current.flags & StaticMask) !== - (workInProgress.flags & StaticMask) && // Disable this warning in legacy mode, because legacy Suspense is weird - // and creates false positives. To make this work in legacy mode, we'd - // need to mark fibers that commit in an incomplete state, somehow. For - // now I'll disable the warning that most of the bugs that would trigger - // it are either exclusive to concurrent mode or exist in both. - (current.mode & ConcurrentMode) !== NoMode - ) { - error( - "Internal React error: Expected static flag was missing. Please " + - "notify the React team." - ); - } - } - - didScheduleRenderPhaseUpdate = false; // This is reset by checkDidRenderIdHook - // localIdCounter = 0; - - thenableIndexCounter = 0; - thenableState = null; + try { + var nextValue = latestGetSnapshot(); + return !objectIs(prevValue, nextValue); + } catch (error) { + return true; + } +} - if (didRenderTooFewHooks) { - throw new Error( - "Rendered fewer hooks than expected. This may be caused by an accidental " + - "early return statement." - ); - } +function forceStoreRerender(fiber) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - { - if (checkIfUseWrappedInTryCatch()) { - var componentName = - getComponentNameFromFiber(workInProgress) || "Unknown"; - - if ( - !didWarnAboutUseWrappedInTryCatch.has(componentName) && // This warning also fires if you suspend with `use` inside an - // async component. Since we warn for that above, we'll silence this - // second warning by checking here. - !didWarnAboutAsyncClientComponent.has(componentName) - ) { - didWarnAboutUseWrappedInTryCatch.add(componentName); - - error( - "`use` was called from inside a try/catch block. This is not allowed " + - "and can lead to unexpected behavior. To handle errors triggered " + - "by `use`, wrap your component in a error boundary." - ); - } - } - } - } + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} - function replaySuspendedComponentWithHooks( - current, - workInProgress, - Component, - props, - secondArg - ) { - // This function is used to replay a component that previously suspended, - // after its data resolves. - // - // It's a simplified version of renderWithHooks, but it doesn't need to do - // most of the set up work because they weren't reset when we suspended; they - // only get reset when the component either completes (finishRenderingHooks) - // or unwinds (resetHooksOnUnwind). - { - hookTypesUpdateIndexDev = -1; // Used for hot reloading: +function mountStateImpl(initialState) { + var hook = mountWorkInProgressHook(); - ignorePreviousDependencies = - current !== null && current.type !== workInProgress.type; - } + if (typeof initialState === 'function') { + var initialStateInitializer = initialState; // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + + initialState = initialStateInitializer(); + + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - var children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); - finishRenderingHooks(current, workInProgress); - return children; + initialStateInitializer(); + setIsStrictModeForDevtools(false); } + } - function renderWithHooksAgain(workInProgress, Component, props, secondArg) { - // This is used to perform another render pass. It's used when setState is - // called during render, and for double invoking components in Strict Mode - // during development. - // - // The state from the previous pass is reused whenever possible. So, state - // updates that were already processed are not processed again, and memoized - // functions (`useMemo`) are not invoked again. - // - // Keep rendering in a loop for as long as render phase updates continue to - // be scheduled. Use a counter to prevent infinite loops. - currentlyRenderingFiber$1 = workInProgress; - var numberOfReRenders = 0; - var children; + hook.memoizedState = hook.baseState = initialState; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: basicStateReducer, + lastRenderedState: initialState + }; + hook.queue = queue; + return hook; +} - do { - if (didScheduleRenderPhaseUpdateDuringThisPass) { - // It's possible that a use() value depended on a state that was updated in - // this rerender, so we need to watch for different thenables this time. - thenableState = null; - } +function mountState(initialState) { + var hook = mountStateImpl(initialState); + var queue = hook.queue; + var dispatch = dispatchSetState.bind(null, currentlyRenderingFiber$1, queue); + queue.dispatch = dispatch; + return [hook.memoizedState, dispatch]; +} - thenableIndexCounter = 0; - didScheduleRenderPhaseUpdateDuringThisPass = false; +function updateState(initialState) { + return updateReducer(basicStateReducer); +} - if (numberOfReRenders >= RE_RENDER_LIMIT) { - throw new Error( - "Too many re-renders. React limits the number of renders to prevent " + - "an infinite loop." - ); - } +function rerenderState(initialState) { + return rerenderReducer(basicStateReducer); +} - numberOfReRenders += 1; +function mountOptimistic(passthrough, reducer) { + var hook = mountWorkInProgressHook(); + hook.memoizedState = hook.baseState = passthrough; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + // Optimistic state does not use the eager update optimization. + lastRenderedReducer: null, + lastRenderedState: null + }; + hook.queue = queue; // This is different than the normal setState function. + + var dispatch = dispatchOptimisticSetState.bind(null, currentlyRenderingFiber$1, true, queue); + queue.dispatch = dispatch; + return [passthrough, dispatch]; +} - { - // Even when hot reloading, allow dependencies to stabilize - // after first render to prevent infinite render phase updates. - ignorePreviousDependencies = false; - } // Start over from the beginning of the list +function updateOptimistic(passthrough, reducer) { + var hook = updateWorkInProgressHook(); + return updateOptimisticImpl(hook, currentHook, passthrough, reducer); +} - currentHook = null; - workInProgressHook = null; - workInProgress.updateQueue = null; +function updateOptimisticImpl(hook, current, passthrough, reducer) { + // Optimistic updates are always rebased on top of the latest value passed in + // as an argument. It's called a passthrough because if there are no pending + // updates, it will be returned as-is. + // + // Reset the base state to the passthrough. Future updates will be applied + // on top of this. + hook.baseState = passthrough; // If a reducer is not provided, default to the same one used by useState. + + var resolvedReducer = typeof reducer === 'function' ? reducer : basicStateReducer; + return updateReducerImpl(hook, currentHook, resolvedReducer); +} - { - // Also validate hook order for cascading updates. - hookTypesUpdateIndexDev = -1; - } +function rerenderOptimistic(passthrough, reducer) { + // Unlike useState, useOptimistic doesn't support render phase updates. + // Also unlike useState, we need to replay all pending updates again in case + // the passthrough value changed. + // + // So instead of a forked re-render implementation that knows how to handle + // render phase udpates, we can use the same implementation as during a + // regular mount or update. + var hook = updateWorkInProgressHook(); + + if (currentHook !== null) { + // This is an update. Process the update queue. + return updateOptimisticImpl(hook, currentHook, passthrough, reducer); + } // This is a mount. No updates to process. + // Reset the base state to the passthrough. Future updates will be applied + // on top of this. + + + hook.baseState = passthrough; + var dispatch = hook.queue.dispatch; + return [passthrough, dispatch]; +} // useActionState actions run sequentially, because each action receives the +// previous state as an argument. We store pending actions on a queue. + + +function dispatchActionState(fiber, actionQueue, setPendingState, setState, payload) { + if (isRenderPhaseUpdate(fiber)) { + throw new Error('Cannot update form state while rendering.'); + } + + var last = actionQueue.pending; + + if (last === null) { + // There are no pending actions; this is the first one. We can run + // it immediately. + var newLast = { + payload: payload, + next: null // circular - ReactSharedInternals.H = HooksDispatcherOnRerenderInDEV; - children = Component(props, secondArg); - } while (didScheduleRenderPhaseUpdateDuringThisPass); + }; + newLast.next = actionQueue.pending = newLast; + runActionStateAction(actionQueue, setPendingState, setState, payload); + } else { + // There's already an action running. Add to the queue. + var first = last.next; + var _newLast = { + payload: payload, + next: first + }; + actionQueue.pending = last.next = _newLast; + } +} - return children; - } +function runActionStateAction(actionQueue, setPendingState, setState, payload) { + var action = actionQueue.action; + var prevState = actionQueue.state; // This is a fork of startTransition - function renderTransitionAwareHostComponentWithHooks( - current, - workInProgress, - lanes - ) { - if (!enableAsyncActions) { - throw new Error("Not implemented."); - } + var prevTransition = ReactSharedInternals.T; + var currentTransition = { + _callbacks: new Set() + }; + ReactSharedInternals.T = currentTransition; - return renderWithHooks( - current, - workInProgress, - TransitionAwareHostComponent, - null, - null, - lanes - ); - } - function TransitionAwareHostComponent() { - if (!enableAsyncActions) { - throw new Error("Not implemented."); - } + { + ReactSharedInternals.T._updatedFibers = new Set(); + } // Optimistically update the pending state, similar to useTransition. + // This will be reverted automatically when all actions are finished. - var dispatcher = ReactSharedInternals.H; - var _dispatcher$useState = dispatcher.useState(), - maybeThenable = _dispatcher$useState[0]; + setPendingState(true); - var nextState; + try { + var returnValue = action(prevState, payload); - if (typeof maybeThenable.then === "function") { - var thenable = maybeThenable; - nextState = useThenable(thenable); - } else { - var status = maybeThenable; - nextState = status; - } // The "reset state" is an object. If it changes, that means something - // requested that we reset the form. + if (returnValue !== null && typeof returnValue === 'object' && // $FlowFixMe[method-unbinding] + typeof returnValue.then === 'function') { + var thenable = returnValue; + notifyTransitionCallbacks(currentTransition, thenable); // Attach a listener to read the return state of the action. As soon as + // this resolves, we can run the next action in the sequence. - var _dispatcher$useState2 = dispatcher.useState(), - nextResetState = _dispatcher$useState2[0]; + thenable.then(function (nextState) { + actionQueue.state = nextState; + finishRunningActionStateAction(actionQueue, setPendingState, setState); + }, function () { + return finishRunningActionStateAction(actionQueue, setPendingState, setState); + }); + setState(thenable); + } else { + setState(returnValue); + var nextState = returnValue; + actionQueue.state = nextState; + finishRunningActionStateAction(actionQueue, setPendingState, setState); + } + } catch (error) { + // This is a trick to get the `useActionState` hook to rethrow the error. + // When it unwraps the thenable with the `use` algorithm, the error + // will be thrown. + var rejectedThenable = { + then: function () {}, + status: 'rejected', + reason: error // $FlowFixMe: Not sure why this doesn't work - var prevResetState = - currentHook !== null ? currentHook.memoizedState : null; + }; + setState(rejectedThenable); + finishRunningActionStateAction(actionQueue, setPendingState, setState); + } finally { + ReactSharedInternals.T = prevTransition; - if (prevResetState !== nextResetState) { - // Schedule a form reset - currentlyRenderingFiber$1.flags |= FormReset; - } + { + if (prevTransition === null && currentTransition._updatedFibers) { + var updatedFibersCount = currentTransition._updatedFibers.size; - return nextState; - } - function bailoutHooks(current, workInProgress, lanes) { - workInProgress.updateQueue = current.updateQueue; // TODO: Don't need to reset the flags here, because they're reset in the - // complete phase (bubbleProperties). + currentTransition._updatedFibers.clear(); - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags &= ~( - MountPassiveDev | - MountLayoutDev | - Passive$1 | - Update - ); - } else { - workInProgress.flags &= ~(Passive$1 | Update); + if (updatedFibersCount > 10) { + warn('Detected a large number of updates inside startTransition. ' + 'If this is due to a subscription please re-write it to use React provided hooks. ' + 'Otherwise concurrent mode guarantees are off the table.'); + } } + } + } +} + +function finishRunningActionStateAction(actionQueue, setPendingState, setState) { + // The action finished running. Pop it from the queue and run the next pending + // action, if there are any. + var last = actionQueue.pending; + + if (last !== null) { + var first = last.next; + + if (first === last) { + // This was the last action in the queue. + actionQueue.pending = null; + } else { + // Remove the first node from the circular queue. + var next = first.next; + last.next = next; // Run the next action. - current.lanes = removeLanes(current.lanes, lanes); + runActionStateAction(actionQueue, setPendingState, setState, next.payload); } - function resetHooksAfterThrow() { - // This is called immediaetly after a throw. It shouldn't reset the entire - // module state, because the work loop might decide to replay the component - // again without rewinding. - // - // It should only reset things like the current dispatcher, to prevent hooks - // from being called outside of a component. - currentlyRenderingFiber$1 = null; // We can assume the previous dispatcher is always this one, since we set it - // at the beginning of the render phase and there's no re-entrance. - - ReactSharedInternals.H = ContextOnlyDispatcher; - } - function resetHooksOnUnwind(workInProgress) { - if (didScheduleRenderPhaseUpdate) { - // There were render phase updates. These are only valid for this render - // phase, which we are now aborting. Remove the updates from the queues so - // they do not persist to the next render. Do not remove updates from hooks - // that weren't processed. - // - // Only reset the updates from the queue if it has a clone. If it does - // not have a clone, that means it wasn't processed, and the updates were - // scheduled before we entered the render phase. - var hook = workInProgress.memoizedState; + } +} - while (hook !== null) { - var queue = hook.queue; +function actionStateReducer(oldState, newState) { + return newState; +} - if (queue !== null) { - queue.pending = null; - } +function mountActionState(action, initialStateProp, permalink) { + var initialState = initialStateProp; + // the `use` algorithm during render. + + + var stateHook = mountWorkInProgressHook(); + stateHook.memoizedState = stateHook.baseState = initialState; // TODO: Typing this "correctly" results in recursion limit errors + // const stateQueue: UpdateQueue, S | Awaited> = { + + var stateQueue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: actionStateReducer, + lastRenderedState: initialState + }; + stateHook.queue = stateQueue; + var setState = dispatchSetState.bind(null, currentlyRenderingFiber$1, stateQueue); + stateQueue.dispatch = setState; // Pending state. This is used to store the pending state of the action. + // Tracked optimistically, like a transition pending state. + + var pendingStateHook = mountStateImpl(false); + var setPendingState = dispatchOptimisticSetState.bind(null, currentlyRenderingFiber$1, false, pendingStateHook.queue); // Action queue hook. This is used to queue pending actions. The queue is + // shared between all instances of the hook. Similar to a regular state queue, + // but different because the actions are run sequentially, and they run in + // an event instead of during render. + + var actionQueueHook = mountWorkInProgressHook(); + var actionQueue = { + state: initialState, + dispatch: null, + // circular + action: action, + pending: null + }; + actionQueueHook.queue = actionQueue; + var dispatch = dispatchActionState.bind(null, currentlyRenderingFiber$1, actionQueue, setPendingState, setState); + actionQueue.dispatch = dispatch; // Stash the action function on the memoized state of the hook. We'll use this + // to detect when the action function changes so we can update it in + // an effect. + + actionQueueHook.memoizedState = action; + return [initialState, dispatch, false]; +} - hook = hook.next; - } +function updateActionState(action, initialState, permalink) { + var stateHook = updateWorkInProgressHook(); + var currentStateHook = currentHook; + return updateActionStateImpl(stateHook, currentStateHook, action); +} - didScheduleRenderPhaseUpdate = false; - } +function updateActionStateImpl(stateHook, currentStateHook, action, initialState, permalink) { + var _updateReducerImpl = updateReducerImpl(stateHook, currentStateHook, actionStateReducer), + actionResult = _updateReducerImpl[0]; - renderLanes = NoLanes; - currentlyRenderingFiber$1 = null; - currentHook = null; - workInProgressHook = null; + var _updateState = updateState(), + isPending = _updateState[0]; // This will suspend until the action finishes. - { - hookTypesDev = null; - hookTypesUpdateIndexDev = -1; - currentHookNameInDev = null; - } - didScheduleRenderPhaseUpdateDuringThisPass = false; - thenableIndexCounter = 0; - thenableState = null; - } + var state = typeof actionResult === 'object' && actionResult !== null && // $FlowFixMe[method-unbinding] + typeof actionResult.then === 'function' ? useThenable(actionResult) : actionResult; + var actionQueueHook = updateWorkInProgressHook(); + var actionQueue = actionQueueHook.queue; + var dispatch = actionQueue.dispatch; // Check if a new action was passed. If so, update it in an effect. - function mountWorkInProgressHook() { - var hook = { - memoizedState: null, - baseState: null, - baseQueue: null, - queue: null, - next: null - }; + var prevAction = actionQueueHook.memoizedState; - if (workInProgressHook === null) { - // This is the first hook in the list - currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook; - } else { - // Append to the end of the list - workInProgressHook = workInProgressHook.next = hook; - } + if (action !== prevAction) { + currentlyRenderingFiber$1.flags |= Passive$1; + pushEffect(HasEffect | Passive, actionStateActionEffect.bind(null, actionQueue, action), createEffectInstance(), null); + } - return workInProgressHook; - } + return [state, dispatch, isPending]; +} - function updateWorkInProgressHook() { - // This function is used both for updates and for re-renders triggered by a - // render phase update. It assumes there is either a current hook we can - // clone, or a work-in-progress hook from a previous render pass that we can - // use as a base. - var nextCurrentHook; +function actionStateActionEffect(actionQueue, action) { + actionQueue.action = action; +} - if (currentHook === null) { - var current = currentlyRenderingFiber$1.alternate; +function rerenderActionState(action, initialState, permalink) { + // Unlike useState, useActionState doesn't support render phase updates. + // Also unlike useState, we need to replay all pending updates again in case + // the passthrough value changed. + // + // So instead of a forked re-render implementation that knows how to handle + // render phase udpates, we can use the same implementation as during a + // regular mount or update. + var stateHook = updateWorkInProgressHook(); + var currentStateHook = currentHook; + + if (currentStateHook !== null) { + // This is an update. Process the update queue. + return updateActionStateImpl(stateHook, currentStateHook, action); + } + + updateWorkInProgressHook(); // State + // This is a mount. No updates to process. + + var state = stateHook.memoizedState; + var actionQueueHook = updateWorkInProgressHook(); + var actionQueue = actionQueueHook.queue; + var dispatch = actionQueue.dispatch; // This may have changed during the rerender. + + actionQueueHook.memoizedState = action; // For mount, pending is always false. + + return [state, dispatch, false]; +} - if (current !== null) { - nextCurrentHook = current.memoizedState; - } else { - nextCurrentHook = null; - } - } else { - nextCurrentHook = currentHook.next; - } +function pushEffect(tag, create, inst, deps) { + var effect = { + tag: tag, + create: create, + inst: inst, + deps: deps, + // Circular + next: null + }; + var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + + if (componentUpdateQueue === null) { + componentUpdateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; + componentUpdateQueue.lastEffect = effect.next = effect; + } else { + var lastEffect = componentUpdateQueue.lastEffect; + + if (lastEffect === null) { + componentUpdateQueue.lastEffect = effect.next = effect; + } else { + var firstEffect = lastEffect.next; + lastEffect.next = effect; + effect.next = firstEffect; + componentUpdateQueue.lastEffect = effect; + } + } + + return effect; +} - var nextWorkInProgressHook; +function createEffectInstance() { + return { + destroy: undefined + }; +} - if (workInProgressHook === null) { - nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState; - } else { - nextWorkInProgressHook = workInProgressHook.next; - } +function mountRef(initialValue) { + var hook = mountWorkInProgressHook(); + var ref = { + current: initialValue + }; + hook.memoizedState = ref; + return ref; +} - if (nextWorkInProgressHook !== null) { - // There's already a work-in-progress. Reuse it. - workInProgressHook = nextWorkInProgressHook; - nextWorkInProgressHook = workInProgressHook.next; - currentHook = nextCurrentHook; - } else { - // Clone from the current hook. - if (nextCurrentHook === null) { - var currentFiber = currentlyRenderingFiber$1.alternate; - - if (currentFiber === null) { - // This is the initial render. This branch is reached when the component - // suspends, resumes, then renders an additional hook. - // Should never be reached because we should switch to the mount dispatcher first. - throw new Error( - "Update hook called on initial render. This is likely a bug in React. Please file an issue." - ); - } else { - // This is an update. We should always have a current hook. - throw new Error( - "Rendered more hooks than during the previous render." - ); - } - } +function updateRef(initialValue) { + var hook = updateWorkInProgressHook(); + return hook.memoizedState; +} - currentHook = nextCurrentHook; - var newHook = { - memoizedState: currentHook.memoizedState, - baseState: currentHook.baseState, - baseQueue: currentHook.baseQueue, - queue: currentHook.queue, - next: null - }; +function mountEffectImpl(fiberFlags, hookFlags, create, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + currentlyRenderingFiber$1.flags |= fiberFlags; + hook.memoizedState = pushEffect(HasEffect | hookFlags, create, createEffectInstance(), nextDeps); +} - if (workInProgressHook === null) { - // This is the first hook in the list. - currentlyRenderingFiber$1.memoizedState = workInProgressHook = - newHook; - } else { - // Append to the end of the list. - workInProgressHook = workInProgressHook.next = newHook; - } +function updateEffectImpl(fiberFlags, hookFlags, create, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var effect = hook.memoizedState; + var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase + // state update or for strict mode. + + if (currentHook !== null) { + if (nextDeps !== null) { + var prevEffect = currentHook.memoizedState; + var prevDeps = prevEffect.deps; + + if (areHookInputsEqual(nextDeps, prevDeps)) { + hook.memoizedState = pushEffect(hookFlags, create, inst, nextDeps); + return; } + } + } - return workInProgressHook; - } // NOTE: defining two versions of this function to avoid size impact when this feature is disabled. - // Previously this function was inlined, the additional `memoCache` property makes it not inlined. + currentlyRenderingFiber$1.flags |= fiberFlags; + hook.memoizedState = pushEffect(HasEffect | hookFlags, create, inst, nextDeps); +} - var createFunctionComponentUpdateQueue; +function mountEffect(create, deps) { + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode && (currentlyRenderingFiber$1.mode & NoStrictPassiveEffectsMode) === NoMode) { + mountEffectImpl(MountPassiveDev | Passive$1 | PassiveStatic, Passive, create, deps); + } else { + mountEffectImpl(Passive$1 | PassiveStatic, Passive, create, deps); + } +} - { - createFunctionComponentUpdateQueue = function () { - return { - lastEffect: null, - events: null, - stores: null, - memoCache: null - }; - }; - } +function updateEffect(create, deps) { + updateEffectImpl(Passive$1, Passive, create, deps); +} - function useThenable(thenable) { - // Track the position of the thenable within this fiber. - var index = thenableIndexCounter; - thenableIndexCounter += 1; +function mountInsertionEffect(create, deps) { + mountEffectImpl(Update, Insertion, create, deps); +} - if (thenableState === null) { - thenableState = createThenableState(); - } +function updateInsertionEffect(create, deps) { + return updateEffectImpl(Update, Insertion, create, deps); +} - var result = trackUsedThenable(thenableState, thenable, index); +function mountLayoutEffect(create, deps) { + var fiberFlags = Update | LayoutStatic; - if ( - currentlyRenderingFiber$1.alternate === null && - (workInProgressHook === null - ? currentlyRenderingFiber$1.memoizedState === null - : workInProgressHook.next === null) - ) { - // Initial render, and either this is the first time the component is - // called, or there were no Hooks called after this use() the previous - // time (perhaps because it threw). Subsequent Hook calls should use the - // mount dispatcher. - { - ReactSharedInternals.H = HooksDispatcherOnMountInDEV; - } - } + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { + fiberFlags |= MountLayoutDev; + } + + return mountEffectImpl(fiberFlags, Layout, create, deps); +} + +function updateLayoutEffect(create, deps) { + return updateEffectImpl(Update, Layout, create, deps); +} - return result; +function imperativeHandleEffect(create, ref) { + if (typeof ref === 'function') { + var refCallback = ref; + var inst = create(); + refCallback(inst); + return function () { + refCallback(null); + }; + } else if (ref !== null && ref !== undefined) { + var refObject = ref; + + { + if (!refObject.hasOwnProperty('current')) { + error('Expected useImperativeHandle() first argument to either be a ' + 'ref callback or React.createRef() object. Instead received: %s.', 'an object with keys {' + Object.keys(refObject).join(', ') + '}'); + } } - function use(usable) { - if (usable !== null && typeof usable === "object") { - // $FlowFixMe[method-unbinding] - if (typeof usable.then === "function") { - // This is a thenable. - var thenable = usable; - return useThenable(thenable); - } else if (usable.$$typeof === REACT_CONTEXT_TYPE) { - var context = usable; - return readContext(context); - } - } // eslint-disable-next-line react-internal/safe-string-coercion + var _inst = create(); + + refObject.current = _inst; + return function () { + refObject.current = null; + }; + } +} - throw new Error( - "An unsupported type was passed to use(): " + String(usable) - ); +function mountImperativeHandle(ref, create, deps) { + { + if (typeof create !== 'function') { + error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null'); } + } // TODO: If deps are provided, should we skip comparing the ref itself? - function useMemoCache(size) { - var memoCache = null; // Fast-path, load memo cache from wip fiber if already prepared - var updateQueue = currentlyRenderingFiber$1.updateQueue; + var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; + var fiberFlags = Update | LayoutStatic; - if (updateQueue !== null) { - memoCache = updateQueue.memoCache; - } // Otherwise clone from the current fiber + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { + fiberFlags |= MountLayoutDev; + } - if (memoCache == null) { - var current = currentlyRenderingFiber$1.alternate; + mountEffectImpl(fiberFlags, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps); +} - if (current !== null) { - var currentUpdateQueue = current.updateQueue; +function updateImperativeHandle(ref, create, deps) { + { + if (typeof create !== 'function') { + error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null'); + } + } // TODO: If deps are provided, should we skip comparing the ref itself? - if (currentUpdateQueue !== null) { - var currentMemoCache = currentUpdateQueue.memoCache; - if (currentMemoCache != null) { - memoCache = { - data: currentMemoCache.data.map(function (array) { - return array.slice(); - }), - index: 0 - }; - } - } - } - } // Finally fall back to allocating a fresh instance of the cache + var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; + updateEffectImpl(Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps); +} - if (memoCache == null) { - memoCache = { - data: [], - index: 0 - }; - } +function mountDebugValue(value, formatterFn) {// This hook is normally a no-op. + // The react-debug-hooks package injects its own implementation + // so that e.g. DevTools can display custom hook values. +} - if (updateQueue === null) { - updateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = updateQueue; - } +var updateDebugValue = mountDebugValue; - updateQueue.memoCache = memoCache; - var data = memoCache.data[memoCache.index]; +function mountCallback(callback, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + hook.memoizedState = [callback, nextDeps]; + return callback; +} - if (data === undefined) { - data = memoCache.data[memoCache.index] = new Array(size); +function updateCallback(callback, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var prevState = hook.memoizedState; - for (var i = 0; i < size; i++) { - data[i] = REACT_MEMO_CACHE_SENTINEL; - } - } else if (data.length !== size) { - // TODO: consider warning or throwing here - { - error( - "Expected a constant size argument for each invocation of useMemoCache. " + - "The previous cache was allocated with size %s but size %s was requested.", - data.length, - size - ); - } - } + if (nextDeps !== null) { + var prevDeps = prevState[1]; - memoCache.index++; - return data; + if (areHookInputsEqual(nextDeps, prevDeps)) { + return prevState[0]; } + } - function basicStateReducer(state, action) { - // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - return typeof action === "function" ? action(state) : action; - } + hook.memoizedState = [callback, nextDeps]; + return callback; +} - function mountReducer(reducer, initialArg, init) { - var hook = mountWorkInProgressHook(); - var initialState; +function mountMemo(nextCreate, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var nextValue = nextCreate(); - if (init !== undefined) { - initialState = init(initialArg); + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + nextCreate(); + setIsStrictModeForDevtools(false); + } - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - init(initialArg); - setIsStrictModeForDevtools(false); - } - } else { - initialState = initialArg; - } + hook.memoizedState = [nextValue, nextDeps]; + return nextValue; +} - hook.memoizedState = hook.baseState = initialState; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: reducer, - lastRenderedState: initialState - }; - hook.queue = queue; - var dispatch = (queue.dispatch = dispatchReducerAction.bind( - null, - currentlyRenderingFiber$1, - queue - )); - return [hook.memoizedState, dispatch]; - } +function updateMemo(nextCreate, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var prevState = hook.memoizedState; // Assume these are defined. If they're not, areHookInputsEqual will warn. + + if (nextDeps !== null) { + var prevDeps = prevState[1]; - function updateReducer(reducer, initialArg, init) { - var hook = updateWorkInProgressHook(); - return updateReducerImpl(hook, currentHook, reducer); + if (areHookInputsEqual(nextDeps, prevDeps)) { + return prevState[0]; } + } - function updateReducerImpl(hook, current, reducer) { - var queue = hook.queue; + var nextValue = nextCreate(); - if (queue === null) { - throw new Error( - "Should have a queue. This is likely a bug in React. Please file an issue." - ); - } + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + nextCreate(); + setIsStrictModeForDevtools(false); + } - queue.lastRenderedReducer = reducer; // The last rebase update that is NOT part of the base state. + hook.memoizedState = [nextValue, nextDeps]; + return nextValue; +} - var baseQueue = hook.baseQueue; // The last pending update that hasn't been processed yet. +function mountDeferredValue(value, initialValue) { + var hook = mountWorkInProgressHook(); + return mountDeferredValueImpl(hook, value, initialValue); +} - var pendingQueue = queue.pending; +function updateDeferredValue(value, initialValue) { + var hook = updateWorkInProgressHook(); + var resolvedCurrentHook = currentHook; + var prevValue = resolvedCurrentHook.memoizedState; + return updateDeferredValueImpl(hook, prevValue, value, initialValue); +} - if (pendingQueue !== null) { - // We have new updates that haven't been processed yet. - // We'll add them to the base queue. - if (baseQueue !== null) { - // Merge the pending queue and the base queue. - var baseFirst = baseQueue.next; - var pendingFirst = pendingQueue.next; - baseQueue.next = pendingFirst; - pendingQueue.next = baseFirst; - } +function rerenderDeferredValue(value, initialValue) { + var hook = updateWorkInProgressHook(); + + if (currentHook === null) { + // This is a rerender during a mount. + return mountDeferredValueImpl(hook, value, initialValue); + } else { + // This is a rerender during an update. + var prevValue = currentHook.memoizedState; + return updateDeferredValueImpl(hook, prevValue, value, initialValue); + } +} - { - if (current.baseQueue !== baseQueue) { - // Internal invariant that should never happen, but feasibly could in - // the future if we implement resuming, or some form of that. - error( - "Internal error: Expected work-in-progress queue to be a clone. " + - "This is a bug in React." - ); - } - } +function mountDeferredValueImpl(hook, value, initialValue) { + if (// When `initialValue` is provided, we defer the initial render even if the + // current render is not synchronous. + initialValue !== undefined && // However, to avoid waterfalls, we do not defer if this render + // was itself spawned by an earlier useDeferredValue. Check if DeferredLane + // is part of the render lanes. + !includesSomeLane(renderLanes, DeferredLane)) { + // Render with the initial value + hook.memoizedState = initialValue; // Schedule a deferred render to switch to the final value. + + var deferredLane = requestDeferredLane(); + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, deferredLane); + markSkippedUpdateLanes(deferredLane); + return initialValue; + } else { + hook.memoizedState = value; + return value; + } +} - current.baseQueue = baseQueue = pendingQueue; - queue.pending = null; +function updateDeferredValueImpl(hook, prevValue, value, initialValue) { + if (objectIs(value, prevValue)) { + // The incoming value is referentially identical to the currently rendered + // value, so we can bail out quickly. + return value; + } else { + // Received a new value that's different from the current value. + // Check if we're inside a hidden tree + if (isCurrentTreeHidden()) { + // Revealing a prerendered tree is considered the same as mounting new + // one, so we reuse the "mount" path in this case. + var resultValue = mountDeferredValueImpl(hook, value, initialValue); // Unlike during an actual mount, we need to mark this as an update if + // the value changed. + + if (!objectIs(resultValue, prevValue)) { + markWorkInProgressReceivedUpdate(); } - var baseState = hook.baseState; - - if (baseQueue === null) { - // If there are no pending updates, then the memoized state should be the - // same as the base state. Currently these only diverge in the case of - // useOptimistic, because useOptimistic accepts a new baseState on - // every render. - hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because - // baseState is derived from other reactive values. - } else { - // We have a queue to process. - var first = baseQueue.next; - var newState = baseState; - var newBaseState = null; - var newBaseQueueFirst = null; - var newBaseQueueLast = null; - var update = first; - var didReadFromEntangledAsyncAction = false; + return resultValue; + } - do { - // An extra OffscreenLane bit is added to updates that were made to - // a hidden tree, so that we can distinguish them from updates that were - // already there when the tree was hidden. - var updateLane = removeLanes(update.lane, OffscreenLane); - var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then - // it's not a "base" update and we should disregard the extra base lanes - // that were added to renderLanes when we entered the Offscreen tree. - - var shouldSkipUpdate = isHiddenUpdate - ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) - : !isSubsetOfLanes(renderLanes, updateLane); - - if (shouldSkipUpdate) { - // Priority is insufficient. Skip this update. If this is the first - // skipped update, the previous update/state is the new base - // update/state. - var clone = { - lane: updateLane, - revertLane: update.revertLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; + var shouldDeferValue = !includesOnlyNonUrgentLanes(renderLanes); - if (newBaseQueueLast === null) { - newBaseQueueFirst = newBaseQueueLast = clone; - newBaseState = newState; - } else { - newBaseQueueLast = newBaseQueueLast.next = clone; - } // Update the remaining priority in the queue. - // TODO: Don't need to accumulate this. Instead, we can remove - // renderLanes from the original lanes. + if (shouldDeferValue) { + // This is an urgent update. Since the value has changed, keep using the + // previous value and spawn a deferred render to update it later. + // Schedule a deferred render + var deferredLane = requestDeferredLane(); + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, deferredLane); + markSkippedUpdateLanes(deferredLane); // Reuse the previous value. We do not need to mark this as an update, + // because we did not render a new value. - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - updateLane - ); - markSkippedUpdateLanes(updateLane); - } else { - // This update does have sufficient priority. - // Check if this is an optimistic update. - var revertLane = update.revertLane; - - if (!enableAsyncActions || revertLane === NoLane) { - // This is not an optimistic update, and we're going to apply it now. - // But, if there were earlier updates that were skipped, we need to - // leave this update in the queue so it can be rebased later. - if (newBaseQueueLast !== null) { - var _clone = { - // This update is going to be committed so we never want uncommit - // it. Using NoLane works because 0 is a subset of all bitmasks, so - // this will never be skipped by the check above. - lane: NoLane, - revertLane: NoLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; - newBaseQueueLast = newBaseQueueLast.next = _clone; - } // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - - if (updateLane === peekEntangledActionLane()) { - didReadFromEntangledAsyncAction = true; - } - } else { - // This is an optimistic update. If the "revert" priority is - // sufficient, don't apply the update. Otherwise, apply the update, - // but leave it in the queue so it can be either reverted or - // rebased in a subsequent render. - if (isSubsetOfLanes(renderLanes, revertLane)) { - // The transition that this optimistic update is associated with - // has finished. Pretend the update doesn't exist by skipping - // over it. - update = update.next; // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - - if (revertLane === peekEntangledActionLane()) { - didReadFromEntangledAsyncAction = true; - } + return prevValue; + } else { + // This is not an urgent update, so we can use the latest value regardless + // of what it is. No need to defer it. + // Mark this as an update to prevent the fiber from bailing out. + markWorkInProgressReceivedUpdate(); + hook.memoizedState = value; + return value; + } + } +} - continue; - } else { - var _clone2 = { - // Once we commit an optimistic update, we shouldn't uncommit it - // until the transition it is associated with has finished - // (represented by revertLane). Using NoLane here works because 0 - // is a subset of all bitmasks, so this will never be skipped by - // the check above. - lane: NoLane, - // Reuse the same revertLane so we know when the transition - // has finished. - revertLane: update.revertLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; - - if (newBaseQueueLast === null) { - newBaseQueueFirst = newBaseQueueLast = _clone2; - newBaseState = newState; - } else { - newBaseQueueLast = newBaseQueueLast.next = _clone2; - } // Update the remaining priority in the queue. - // TODO: Don't need to accumulate this. Instead, we can remove - // renderLanes from the original lanes. - - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - revertLane - ); - markSkippedUpdateLanes(revertLane); - } - } // Process this update. +function startTransition(fiber, queue, pendingState, finishedState, callback, options) { + var previousPriority = getCurrentUpdatePriority(); + setCurrentUpdatePriority(higherEventPriority(previousPriority, ContinuousEventPriority)); + var prevTransition = ReactSharedInternals.T; + var currentTransition = { + _callbacks: new Set() + }; + + if (enableAsyncActions) { + // We don't really need to use an optimistic update here, because we + // schedule a second "revert" update below (which we use to suspend the + // transition until the async action scope has finished). But we'll use an + // optimistic update anyway to make it less likely the behavior accidentally + // diverges; for example, both an optimistic update and this one should + // share the same lane. + ReactSharedInternals.T = currentTransition; + dispatchOptimisticSetState(fiber, false, queue, pendingState); + } else { + ReactSharedInternals.T = null; + dispatchSetState(fiber, queue, pendingState); + ReactSharedInternals.T = currentTransition; + } + + { + currentTransition._updatedFibers = new Set(); + } + + try { + if (enableAsyncActions) { + var returnValue = callback(); // Check if we're inside an async action scope. If so, we'll entangle + // this new action with the existing scope. + // + // If we're not already inside an async action scope, and this action is + // async, then we'll create a new async scope. + // + // In the async case, the resulting render will suspend until the async + // action scope has finished. - var action = update.action; + if (returnValue !== null && typeof returnValue === 'object' && typeof returnValue.then === 'function') { + var thenable = returnValue; + notifyTransitionCallbacks(currentTransition, thenable); // Create a thenable that resolves to `finishedState` once the async + // action has completed. - if (shouldDoubleInvokeUserFnsInHooksDEV) { - reducer(newState, action); - } + var thenableForFinishedState = chainThenableValue(thenable, finishedState); + dispatchSetState(fiber, queue, thenableForFinishedState); + } else { + dispatchSetState(fiber, queue, finishedState); + } + } else { + // Async actions are not enabled. + dispatchSetState(fiber, queue, finishedState); + callback(); + } + } catch (error) { + if (enableAsyncActions) { + // This is a trick to get the `useTransition` hook to rethrow the error. + // When it unwraps the thenable with the `use` algorithm, the error + // will be thrown. + var rejectedThenable = { + then: function () {}, + status: 'rejected', + reason: error + }; + dispatchSetState(fiber, queue, rejectedThenable); + } else { + // The error rethrowing behavior is only enabled when the async actions + // feature is on, even for sync actions. + throw error; + } + } finally { + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; - if (update.hasEagerState) { - // If this update is a state update (not a reducer) and was processed eagerly, - // we can use the eagerly computed state - newState = update.eagerState; - } else { - newState = reducer(newState, action); - } - } + { + if (prevTransition === null && currentTransition._updatedFibers) { + var updatedFibersCount = currentTransition._updatedFibers.size; - update = update.next; - } while (update !== null && update !== first); + currentTransition._updatedFibers.clear(); - if (newBaseQueueLast === null) { - newBaseState = newState; - } else { - newBaseQueueLast.next = newBaseQueueFirst; - } // Mark that the fiber performed work, but only if the new state is - // different from the current state. - - if (!objectIs(newState, hook.memoizedState)) { - markWorkInProgressReceivedUpdate(); // Check if this update is part of a pending async action. If so, we'll - // need to suspend until the action has finished, so that it's batched - // together with future updates in the same action. - // TODO: Once we support hooks inside useMemo (or an equivalent - // memoization boundary like Forget), hoist this logic so that it only - // suspends if the memo boundary produces a new value. - - if (didReadFromEntangledAsyncAction) { - var entangledActionThenable = peekEntangledActionThenable(); - - if (entangledActionThenable !== null) { - // TODO: Instead of the throwing the thenable directly, throw a - // special object like `use` does so we can detect if it's captured - // by userspace. - throw entangledActionThenable; - } - } + if (updatedFibersCount > 10) { + warn('Detected a large number of updates inside startTransition. ' + 'If this is due to a subscription please re-write it to use React provided hooks. ' + 'Otherwise concurrent mode guarantees are off the table.'); } - - hook.memoizedState = newState; - hook.baseState = newBaseState; - hook.baseQueue = newBaseQueueLast; - queue.lastRenderedState = newState; } + } + } +} - if (baseQueue === null) { - // `queue.lanes` is used for entangling transitions. We can set it back to - // zero once the queue is empty. - queue.lanes = NoLanes; - } +function mountTransition() { + var stateHook = mountStateImpl(false); // The `start` method never changes. - var dispatch = queue.dispatch; - return [hook.memoizedState, dispatch]; - } + var start = startTransition.bind(null, currentlyRenderingFiber$1, stateHook.queue, true, false); + var hook = mountWorkInProgressHook(); + hook.memoizedState = start; + return [false, start]; +} - function rerenderReducer(reducer, initialArg, init) { - var hook = updateWorkInProgressHook(); - var queue = hook.queue; +function updateTransition() { + var _updateState2 = updateState(), + booleanOrThenable = _updateState2[0]; - if (queue === null) { - throw new Error( - "Should have a queue. This is likely a bug in React. Please file an issue." - ); - } + var hook = updateWorkInProgressHook(); + var start = hook.memoizedState; + var isPending = typeof booleanOrThenable === 'boolean' ? booleanOrThenable : // This will suspend until the async action scope has finished. + useThenable(booleanOrThenable); + return [isPending, start]; +} - queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous - // work-in-progress hook. +function rerenderTransition() { + var _rerenderState = rerenderState(), + booleanOrThenable = _rerenderState[0]; - var dispatch = queue.dispatch; - var lastRenderPhaseUpdate = queue.pending; - var newState = hook.memoizedState; + var hook = updateWorkInProgressHook(); + var start = hook.memoizedState; + var isPending = typeof booleanOrThenable === 'boolean' ? booleanOrThenable : // This will suspend until the async action scope has finished. + useThenable(booleanOrThenable); + return [isPending, start]; +} - if (lastRenderPhaseUpdate !== null) { - // The queue doesn't persist past this render pass. - queue.pending = null; - var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next; - var update = firstRenderPhaseUpdate; +function useHostTransitionStatus() { + if (!enableAsyncActions) { + throw new Error('Not implemented.'); + } - do { - // Process this render phase update. We don't have to check the - // priority because it will always be the same as the current - // render's. - var action = update.action; - newState = reducer(newState, action); - update = update.next; - } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is - // different from the current state. + var status = readContext(HostTransitionContext); + return status !== null ? status : NotPendingTransition; +} - if (!objectIs(newState, hook.memoizedState)) { - markWorkInProgressReceivedUpdate(); - } +function mountId() { + var hook = mountWorkInProgressHook(); + var root = getWorkInProgressRoot(); // TODO: In Fizz, id generation is specific to each server config. Maybe we + // should do this in Fiber, too? Deferring this decision for now because + // there's no other place to store the prefix except for an internal field on + // the public createRoot object, which the fiber tree does not currently have + // a reference to. + + var identifierPrefix = root.identifierPrefix; + var id; + + { + // Use a lowercase r prefix for client-generated ids. + var globalClientId = globalClientIdCounter++; + id = ':' + identifierPrefix + 'r' + globalClientId.toString(32) + ':'; + } + + hook.memoizedState = id; + return id; +} - hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to - // the base state unless the queue is empty. - // TODO: Not sure if this is the desired semantics, but it's what we - // do for gDSFP. I can't remember why. +function updateId() { + var hook = updateWorkInProgressHook(); + var id = hook.memoizedState; + return id; +} - if (hook.baseQueue === null) { - hook.baseState = newState; - } +function mountRefresh() { + var hook = mountWorkInProgressHook(); + var refresh = hook.memoizedState = refreshCache.bind(null, currentlyRenderingFiber$1); + return refresh; +} - queue.lastRenderedState = newState; - } +function updateRefresh() { + var hook = updateWorkInProgressHook(); + return hook.memoizedState; +} - return [newState, dispatch]; - } +function refreshCache(fiber, seedKey, seedValue) { + // TODO: Consider warning if the refresh is at discrete priority, or if we + // otherwise suspect that it wasn't batched properly. - function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { - var fiber = currentlyRenderingFiber$1; - var hook = mountWorkInProgressHook(); - var nextSnapshot; - { - nextSnapshot = getSnapshot(); + var provider = fiber.return; + while (provider !== null) { + switch (provider.tag) { + case CacheComponent: + case HostRoot: { - if (!didWarnUncachedGetSnapshot) { - var cachedSnapshot = getSnapshot(); + // Schedule an update on the cache boundary to trigger a refresh. + var lane = requestUpdateLane(provider); + var refreshUpdate = createUpdate(lane); + var root = enqueueUpdate(provider, refreshUpdate, lane); - if (!objectIs(nextSnapshot, cachedSnapshot)) { - error( - "The result of getSnapshot should be cached to avoid an infinite loop" - ); - - didWarnUncachedGetSnapshot = true; - } - } - } // Unless we're rendering a blocking lane, schedule a consistency check. - // Right before committing, we will walk the tree and check if any of the - // stores were mutated. - // - // We won't do this if we're hydrating server-rendered content, because if - // the content is stale, it's already visible anyway. Instead we'll patch - // it up in a passive effect. + if (root !== null) { + scheduleUpdateOnFiber(root, provider, lane); + entangleTransitions(root, provider, lane); + } // TODO: If a refresh never commits, the new cache created here must be + // released. A simple case is start refreshing a cache boundary, but then + // unmount that boundary before the refresh completes. - var root = getWorkInProgressRoot(); - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } + var seededCache = createCache(); - var rootRenderLanes = getWorkInProgressRootRenderLanes(); + if (seedKey !== null && seedKey !== undefined && root !== null) { + { + { + error('The seed argument is not enabled outside experimental channels.'); + } + } + } - if (!includesBlockingLane(root, rootRenderLanes)) { - pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); + var payload = { + cache: seededCache + }; + refreshUpdate.payload = payload; + return; } - } // Read the current snapshot from the store on every render. This breaks the - // normal rules of React, and only works because store updates are - // always synchronous. + } - hook.memoizedState = nextSnapshot; - var inst = { - value: nextSnapshot, - getSnapshot: getSnapshot - }; - hook.queue = inst; // Schedule an effect to subscribe to the store. - - mountEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [ - subscribe - ]); // Schedule an effect to update the mutable instance fields. We will update - // this whenever subscribe, getSnapshot, or value changes. Because there's no - // clean-up function, and we track the deps correctly, we can call pushEffect - // directly, without storing any additional state. For the same reason, we - // don't need to set a static flag, either. - - fiber.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), - createEffectInstance(), - null - ); - return nextSnapshot; - } - - function updateSyncExternalStore( - subscribe, - getSnapshot, - getServerSnapshot - ) { - var fiber = currentlyRenderingFiber$1; - var hook = updateWorkInProgressHook(); // Read the current snapshot from the store on every render. This breaks the - // normal rules of React, and only works because store updates are - // always synchronous. - - var nextSnapshot; + provider = provider.return; + } // TODO: Warn if unmounted? - { - nextSnapshot = getSnapshot(); +} - { - if (!didWarnUncachedGetSnapshot) { - var cachedSnapshot = getSnapshot(); +function dispatchReducerAction(fiber, queue, action) { + { + if (typeof arguments[3] === 'function') { + error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().'); + } + } - if (!objectIs(nextSnapshot, cachedSnapshot)) { - error( - "The result of getSnapshot should be cached to avoid an infinite loop" - ); + var lane = requestUpdateLane(fiber); + var update = { + lane: lane, + revertLane: NoLane, + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; - didWarnUncachedGetSnapshot = true; - } - } - } - } + if (isRenderPhaseUpdate(fiber)) { + enqueueRenderPhaseUpdate(queue, update); + } else { + var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - var prevSnapshot = (currentHook || hook).memoizedState; - var snapshotChanged = !objectIs(prevSnapshot, nextSnapshot); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitionUpdate(root, queue, lane); + } + } - if (snapshotChanged) { - hook.memoizedState = nextSnapshot; - markWorkInProgressReceivedUpdate(); - } + markUpdateInDevTools(fiber, lane); +} - var inst = hook.queue; - updateEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [ - subscribe - ]); // Whenever getSnapshot or subscribe changes, we need to check in the - // commit phase if there was an interleaved mutation. In concurrent mode - // this can happen all the time, but even in synchronous mode, an earlier - // effect may have mutated the store. - - if ( - inst.getSnapshot !== getSnapshot || - snapshotChanged || // Check if the subscribe function changed. We can save some memory by - // checking whether we scheduled a subscription effect above. - (workInProgressHook !== null && - workInProgressHook.memoizedState.tag & HasEffect) - ) { - fiber.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - updateStoreInstance.bind( - null, - fiber, - inst, - nextSnapshot, - getSnapshot - ), - createEffectInstance(), - null - ); // Unless we're rendering a blocking lane, schedule a consistency check. - // Right before committing, we will walk the tree and check if any of the - // stores were mutated. - - var root = getWorkInProgressRoot(); - - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } - - if (!includesBlockingLane(root, renderLanes)) { - pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); - } - } - - return nextSnapshot; - } - - function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) { - fiber.flags |= StoreConsistency; - var check = { - getSnapshot: getSnapshot, - value: renderedSnapshot - }; - var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; +function dispatchSetState(fiber, queue, action) { + { + if (typeof arguments[3] === 'function') { + error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().'); + } + } + + var lane = requestUpdateLane(fiber); + var update = { + lane: lane, + revertLane: NoLane, + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; + + if (isRenderPhaseUpdate(fiber)) { + enqueueRenderPhaseUpdate(queue, update); + } else { + var alternate = fiber.alternate; + + if (fiber.lanes === NoLanes && (alternate === null || alternate.lanes === NoLanes)) { + // The queue is currently empty, which means we can eagerly compute the + // next state before entering the render phase. If the new state is the + // same as the current state, we may be able to bail out entirely. + var lastRenderedReducer = queue.lastRenderedReducer; + + if (lastRenderedReducer !== null) { + var prevDispatcher = null; - if (componentUpdateQueue === null) { - componentUpdateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; - componentUpdateQueue.stores = [check]; - } else { - var stores = componentUpdateQueue.stores; + { + prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + } - if (stores === null) { - componentUpdateQueue.stores = [check]; - } else { - stores.push(check); + try { + var currentState = queue.lastRenderedState; + var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute + // it, on the update object. If the reducer hasn't changed by the + // time we enter the render phase, then the eager state can be used + // without calling the reducer again. + + update.hasEagerState = true; + update.eagerState = eagerState; + + if (objectIs(eagerState, currentState)) { + // Fast path. We can bail out without scheduling React to re-render. + // It's still possible that we'll need to rebase this update later, + // if the component re-renders for a different reason and by that + // time the reducer has changed. + // TODO: Do we still need to entangle transitions in this case? + enqueueConcurrentHookUpdateAndEagerlyBailout(fiber, queue, update); + return; + } + } catch (error) {// Suppress the error. It will throw again in the render phase. + } finally { + { + ReactSharedInternals.H = prevDispatcher; + } } } } - function updateStoreInstance(fiber, inst, nextSnapshot, getSnapshot) { - // These are updated in the passive phase - inst.value = nextSnapshot; - inst.getSnapshot = getSnapshot; // Something may have been mutated in between render and commit. This could - // have been in an event that fired before the passive effects, or it could - // have been in a layout effect. In that case, we would have used the old - // snapsho and getSnapshot values to bail out. We need to check one more time. + var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - if (checkIfSnapshotChanged(inst)) { - // Force a re-render. - forceStoreRerender(fiber); - } + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitionUpdate(root, queue, lane); } + } - function subscribeToStore(fiber, inst, subscribe) { - var handleStoreChange = function () { - // The store changed. Check if the snapshot changed since the last time we - // read from the store. - if (checkIfSnapshotChanged(inst)) { - // Force a re-render. - forceStoreRerender(fiber); - } - }; // Subscribe to the store and return a clean-up function. + markUpdateInDevTools(fiber, lane); +} - return subscribe(handleStoreChange); - } +function dispatchOptimisticSetState(fiber, throwIfDuringRender, queue, action) { + var transition = requestCurrentTransition(); + + { + if (transition === null) { + // An optimistic update occurred, but startTransition is not on the stack. + // There are two likely scenarios. + // One possibility is that the optimistic update is triggered by a regular + // event handler (e.g. `onSubmit`) instead of an action. This is a mistake + // and we will warn. + // The other possibility is the optimistic update is inside an async + // action, but after an `await`. In this case, we can make it "just work" + // by associating the optimistic update with the pending async action. + // Technically it's possible that the optimistic update is unrelated to + // the pending action, but we don't have a way of knowing this for sure + // because browsers currently do not provide a way to track async scope. + // (The AsyncContext proposal, if it lands, will solve this in the + // future.) However, this is no different than the problem of unrelated + // transitions being grouped together — it's not wrong per se, but it's + // not ideal. + // Once AsyncContext starts landing in browsers, we will provide better + // warnings in development for these cases. + if (peekEntangledActionLane() !== NoLane) ; else { + // There's no pending async action. The most likely cause is that we're + // inside a regular event handler (e.g. onSubmit) instead of an action. + error('An optimistic state update occurred outside a transition or ' + 'action. To fix, move the update to an action, or wrap ' + 'with startTransition.'); + } + } + } + + var update = { + // An optimistic update commits synchronously. + lane: SyncLane, + // After committing, the optimistic update is "reverted" using the same + // lane as the transition it's associated with. + revertLane: requestTransitionLane(), + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; + + if (isRenderPhaseUpdate(fiber)) { + // When calling startTransition during render, this warns instead of + // throwing because throwing would be a breaking change. setOptimisticState + // is a new API so it's OK to throw. + if (throwIfDuringRender) { + throw new Error('Cannot update optimistic state while rendering.'); + } else { + // startTransition was called during render. We don't need to do anything + // besides warn here because the render phase update would be overidden by + // the second update, anyway. We can remove this branch and make it throw + // in a future release. + { + error('Cannot call startTransition while rendering.'); + } + } + } else { + var root = enqueueConcurrentHookUpdate(fiber, queue, update, SyncLane); + + if (root !== null) { + // NOTE: The optimistic update implementation assumes that the transition + // will never be attempted before the optimistic update. This currently + // holds because the optimistic update is always synchronous. If we ever + // change that, we'll need to account for this. + scheduleUpdateOnFiber(root, fiber, SyncLane); // Optimistic updates are always synchronous, so we don't need to call + // entangleTransitionUpdate here. + } + } + + markUpdateInDevTools(fiber, SyncLane); +} - function checkIfSnapshotChanged(inst) { - var latestGetSnapshot = inst.getSnapshot; - var prevValue = inst.value; +function isRenderPhaseUpdate(fiber) { + var alternate = fiber.alternate; + return fiber === currentlyRenderingFiber$1 || alternate !== null && alternate === currentlyRenderingFiber$1; +} - try { - var nextValue = latestGetSnapshot(); - return !objectIs(prevValue, nextValue); - } catch (error) { - return true; - } - } +function enqueueRenderPhaseUpdate(queue, update) { + // This is a render phase update. Stash it in a lazily-created map of + // queue -> linked list of updates. After this render pass, we'll restart + // and apply the stashed updates on top of the work-in-progress hook. + didScheduleRenderPhaseUpdateDuringThisPass = didScheduleRenderPhaseUpdate = true; + var pending = queue.pending; + + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } + + queue.pending = update; +} // TODO: Move to ReactFiberConcurrentUpdates? + + +function entangleTransitionUpdate(root, queue, lane) { + if (isTransitionLane(lane)) { + var queueLanes = queue.lanes; // If any entangled lanes are no longer pending on the root, then they + // must have finished. We can remove them from the shared queue, which + // represents a superset of the actually pending lanes. In some cases we + // may entangle more than we need to, but that's OK. In fact it's worse if + // we *don't* entangle when we should. + + queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + + var newQueueLanes = mergeLanes(queueLanes, lane); + queue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if + // the lane finished since the last time we entangled it. So we need to + // entangle it again, just to be sure. + + markRootEntangled(root, newQueueLanes); + } +} - function forceStoreRerender(fiber) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); +function markUpdateInDevTools(fiber, lane, action) { - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } + { + markStateUpdateScheduled(fiber, lane); + } +} + +var ContextOnlyDispatcher = { + readContext: readContext, + use: use, + useCallback: throwInvalidHookError, + useContext: throwInvalidHookError, + useEffect: throwInvalidHookError, + useImperativeHandle: throwInvalidHookError, + useLayoutEffect: throwInvalidHookError, + useInsertionEffect: throwInvalidHookError, + useMemo: throwInvalidHookError, + useReducer: throwInvalidHookError, + useRef: throwInvalidHookError, + useState: throwInvalidHookError, + useDebugValue: throwInvalidHookError, + useDeferredValue: throwInvalidHookError, + useTransition: throwInvalidHookError, + useSyncExternalStore: throwInvalidHookError, + useId: throwInvalidHookError +}; + +{ + ContextOnlyDispatcher.useCacheRefresh = throwInvalidHookError; +} - function mountStateImpl(initialState) { - var hook = mountWorkInProgressHook(); +{ + ContextOnlyDispatcher.useMemoCache = throwInvalidHookError; +} - if (typeof initialState === "function") { - var initialStateInitializer = initialState; // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types +if (enableAsyncActions) { + ContextOnlyDispatcher.useHostTransitionStatus = throwInvalidHookError; + ContextOnlyDispatcher.useFormState = throwInvalidHookError; + ContextOnlyDispatcher.useActionState = throwInvalidHookError; +} - initialState = initialStateInitializer(); +if (enableAsyncActions) { + ContextOnlyDispatcher.useOptimistic = throwInvalidHookError; +} - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types +var HooksDispatcherOnMountInDEV = null; +var HooksDispatcherOnMountWithHookTypesInDEV = null; +var HooksDispatcherOnUpdateInDEV = null; +var HooksDispatcherOnRerenderInDEV = null; +var InvalidNestedHooksDispatcherOnMountInDEV = null; +var InvalidNestedHooksDispatcherOnUpdateInDEV = null; +var InvalidNestedHooksDispatcherOnRerenderInDEV = null; + +{ + var warnInvalidContextAccess = function () { + error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + }; + + var warnInvalidHookAccess = function () { + error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://react.dev/link/rules-of-hooks'); + }; + + HooksDispatcherOnMountInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + mountHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - initialStateInitializer(); - setIsStrictModeForDevtools(false); - } + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - hook.memoizedState = hook.baseState = initialState; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: basicStateReducer, - lastRenderedState: initialState - }; - hook.queue = queue; - return hook; - } + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + mountHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - function mountState(initialState) { - var hook = mountStateImpl(initialState); - var queue = hook.queue; - var dispatch = dispatchSetState.bind( - null, - currentlyRenderingFiber$1, - queue - ); - queue.dispatch = dispatch; - return [hook.memoizedState, dispatch]; - } + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + mountHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + mountHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + mountHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + mountHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + mountHookTypesDev(); + return mountId(); + } + }; + + { + HooksDispatcherOnMountInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + mountHookTypesDev(); + return mountRefresh(); + }; + } - function updateState(initialState) { - return updateReducer(basicStateReducer); - } + { + HooksDispatcherOnMountInDEV.useMemoCache = useMemoCache; + } - function rerenderState(initialState) { - return rerenderReducer(basicStateReducer); - } + if (enableAsyncActions) { + HooksDispatcherOnMountInDEV.useHostTransitionStatus = useHostTransitionStatus; - function mountOptimistic(passthrough, reducer) { - var hook = mountWorkInProgressHook(); - hook.memoizedState = hook.baseState = passthrough; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - // Optimistic state does not use the eager update optimization. - lastRenderedReducer: null, - lastRenderedState: null - }; - hook.queue = queue; // This is different than the normal setState function. + HooksDispatcherOnMountInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + mountHookTypesDev(); + return mountActionState(action, initialState); + }; - var dispatch = dispatchOptimisticSetState.bind( - null, - currentlyRenderingFiber$1, - true, - queue - ); - queue.dispatch = dispatch; - return [passthrough, dispatch]; - } + HooksDispatcherOnMountInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + mountHookTypesDev(); + return mountActionState(action, initialState); + }; + } - function updateOptimistic(passthrough, reducer) { - var hook = updateWorkInProgressHook(); - return updateOptimisticImpl(hook, currentHook, passthrough, reducer); - } + if (enableAsyncActions) { + HooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + mountHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + HooksDispatcherOnMountWithHookTypesInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - function updateOptimisticImpl(hook, current, passthrough, reducer) { - // Optimistic updates are always rebased on top of the latest value passed in - // as an argument. It's called a passthrough because if there are no pending - // updates, it will be returned as-is. - // - // Reset the base state to the passthrough. Future updates will be applied - // on top of this. - hook.baseState = passthrough; // If a reducer is not provided, default to the same one used by useState. + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - var resolvedReducer = - typeof reducer === "function" ? reducer : basicStateReducer; - return updateReducerImpl(hook, currentHook, resolvedReducer); - } + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - function rerenderOptimistic(passthrough, reducer) { - // Unlike useState, useOptimistic doesn't support render phase updates. - // Also unlike useState, we need to replay all pending updates again in case - // the passthrough value changed. - // - // So instead of a forked re-render implementation that knows how to handle - // render phase udpates, we can use the same implementation as during a - // regular mount or update. - var hook = updateWorkInProgressHook(); - - if (currentHook !== null) { - // This is an update. Process the update queue. - return updateOptimisticImpl(hook, currentHook, passthrough, reducer); - } // This is a mount. No updates to process. - // Reset the base state to the passthrough. Future updates will be applied - // on top of this. - - hook.baseState = passthrough; - var dispatch = hook.queue.dispatch; - return [passthrough, dispatch]; - } // useActionState actions run sequentially, because each action receives the - // previous state as an argument. We store pending actions on a queue. - - function dispatchActionState( - fiber, - actionQueue, - setPendingState, - setState, - payload - ) { - if (isRenderPhaseUpdate(fiber)) { - throw new Error("Cannot update form state while rendering."); - } - - var last = actionQueue.pending; - - if (last === null) { - // There are no pending actions; this is the first one. We can run - // it immediately. - var newLast = { - payload: payload, - next: null // circular - }; - newLast.next = actionQueue.pending = newLast; - runActionStateAction(actionQueue, setPendingState, setState, payload); - } else { - // There's already an action running. Add to the queue. - var first = last.next; - var _newLast = { - payload: payload, - next: first - }; - actionQueue.pending = last.next = _newLast; - } - } + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return mountId(); + } + }; + + { + HooksDispatcherOnMountWithHookTypesInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return mountRefresh(); + }; + } - function runActionStateAction( - actionQueue, - setPendingState, - setState, - payload - ) { - var action = actionQueue.action; - var prevState = actionQueue.state; // This is a fork of startTransition + { + HooksDispatcherOnMountWithHookTypesInDEV.useMemoCache = useMemoCache; + } - var prevTransition = ReactSharedInternals.T; - var currentTransition = { - _callbacks: new Set() - }; - ReactSharedInternals.T = currentTransition; + if (enableAsyncActions) { + HooksDispatcherOnMountWithHookTypesInDEV.useHostTransitionStatus = useHostTransitionStatus; - { - ReactSharedInternals.T._updatedFibers = new Set(); - } // Optimistically update the pending state, similar to useTransition. - // This will be reverted automatically when all actions are finished. + HooksDispatcherOnMountWithHookTypesInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return mountActionState(action, initialState); + }; + + HooksDispatcherOnMountWithHookTypesInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return mountActionState(action, initialState); + }; + } - setPendingState(true); + if (enableAsyncActions) { + HooksDispatcherOnMountWithHookTypesInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + HooksDispatcherOnUpdateInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; try { - var returnValue = action(prevState, payload); - - if ( - returnValue !== null && - typeof returnValue === "object" && // $FlowFixMe[method-unbinding] - typeof returnValue.then === "function" - ) { - var thenable = returnValue; - notifyTransitionCallbacks(currentTransition, thenable); // Attach a listener to read the return state of the action. As soon as - // this resolves, we can run the next action in the sequence. - - thenable.then( - function (nextState) { - actionQueue.state = nextState; - finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - }, - function () { - return finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - } - ); - setState(thenable); - } else { - setState(returnValue); - var nextState = returnValue; - actionQueue.state = nextState; - finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - } - } catch (error) { - // This is a trick to get the `useActionState` hook to rethrow the error. - // When it unwraps the thenable with the `use` algorithm, the error - // will be thrown. - var rejectedThenable = { - then: function () {}, - status: "rejected", - reason: error // $FlowFixMe: Not sure why this doesn't work - }; - setState(rejectedThenable); - finishRunningActionStateAction(actionQueue, setPendingState, setState); + return updateMemo(create, deps); } finally { - ReactSharedInternals.T = prevTransition; + ReactSharedInternals.H = prevDispatcher; + } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - { - if (prevTransition === null && currentTransition._updatedFibers) { - var updatedFibersCount = currentTransition._updatedFibers.size; + try { + return updateReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - currentTransition._updatedFibers.clear(); + try { + return updateState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return updateDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return updateTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return updateId(); + } + }; + + { + HooksDispatcherOnUpdateInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - if (updatedFibersCount > 10) { - warn( - "Detected a large number of updates inside startTransition. " + - "If this is due to a subscription please re-write it to use React provided hooks. " + - "Otherwise concurrent mode guarantees are off the table." - ); - } - } - } - } - } + { + HooksDispatcherOnUpdateInDEV.useMemoCache = useMemoCache; + } - function finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ) { - // The action finished running. Pop it from the queue and run the next pending - // action, if there are any. - var last = actionQueue.pending; + if (enableAsyncActions) { + HooksDispatcherOnUpdateInDEV.useHostTransitionStatus = useHostTransitionStatus; - if (last !== null) { - var first = last.next; + HooksDispatcherOnUpdateInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return updateActionState(action); + }; - if (first === last) { - // This was the last action in the queue. - actionQueue.pending = null; - } else { - // Remove the first node from the circular queue. - var next = first.next; - last.next = next; // Run the next action. + HooksDispatcherOnUpdateInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return updateActionState(action); + }; + } - runActionStateAction( - actionQueue, - setPendingState, - setState, - next.payload - ); - } + if (enableAsyncActions) { + HooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return updateOptimistic(passthrough, reducer); + }; + } + + HooksDispatcherOnRerenderInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } - } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; - function actionStateReducer(oldState, newState) { - return newState; - } + try { + return rerenderReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + + try { + return rerenderState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return rerenderDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return rerenderTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return updateId(); + } + }; + + { + HooksDispatcherOnRerenderInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - function mountActionState(action, initialStateProp, permalink) { - var initialState = initialStateProp; - // the `use` algorithm during render. + { + HooksDispatcherOnRerenderInDEV.useMemoCache = useMemoCache; + } - var stateHook = mountWorkInProgressHook(); - stateHook.memoizedState = stateHook.baseState = initialState; // TODO: Typing this "correctly" results in recursion limit errors - // const stateQueue: UpdateQueue, S | Awaited> = { + if (enableAsyncActions) { + HooksDispatcherOnRerenderInDEV.useHostTransitionStatus = useHostTransitionStatus; - var stateQueue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: actionStateReducer, - lastRenderedState: initialState - }; - stateHook.queue = stateQueue; - var setState = dispatchSetState.bind( - null, - currentlyRenderingFiber$1, - stateQueue - ); - stateQueue.dispatch = setState; // Pending state. This is used to store the pending state of the action. - // Tracked optimistically, like a transition pending state. - - var pendingStateHook = mountStateImpl(false); - var setPendingState = dispatchOptimisticSetState.bind( - null, - currentlyRenderingFiber$1, - false, - pendingStateHook.queue - ); // Action queue hook. This is used to queue pending actions. The queue is - // shared between all instances of the hook. Similar to a regular state queue, - // but different because the actions are run sequentially, and they run in - // an event instead of during render. - - var actionQueueHook = mountWorkInProgressHook(); - var actionQueue = { - state: initialState, - dispatch: null, - // circular - action: action, - pending: null - }; - actionQueueHook.queue = actionQueue; - var dispatch = dispatchActionState.bind( - null, - currentlyRenderingFiber$1, - actionQueue, - setPendingState, - setState - ); - actionQueue.dispatch = dispatch; // Stash the action function on the memoized state of the hook. We'll use this - // to detect when the action function changes so we can update it in - // an effect. - - actionQueueHook.memoizedState = action; - return [initialState, dispatch, false]; - } - - function updateActionState(action, initialState, permalink) { - var stateHook = updateWorkInProgressHook(); - var currentStateHook = currentHook; - return updateActionStateImpl(stateHook, currentStateHook, action); - } - - function updateActionStateImpl( - stateHook, - currentStateHook, - action, - initialState, - permalink - ) { - var _updateReducerImpl = updateReducerImpl( - stateHook, - currentStateHook, - actionStateReducer - ), - actionResult = _updateReducerImpl[0]; - - var _updateState = updateState(), - isPending = _updateState[0]; // This will suspend until the action finishes. - - var state = - typeof actionResult === "object" && - actionResult !== null && // $FlowFixMe[method-unbinding] - typeof actionResult.then === "function" - ? useThenable(actionResult) - : actionResult; - var actionQueueHook = updateWorkInProgressHook(); - var actionQueue = actionQueueHook.queue; - var dispatch = actionQueue.dispatch; // Check if a new action was passed. If so, update it in an effect. - - var prevAction = actionQueueHook.memoizedState; - - if (action !== prevAction) { - currentlyRenderingFiber$1.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - actionStateActionEffect.bind(null, actionQueue, action), - createEffectInstance(), - null - ); - } - - return [state, dispatch, isPending]; - } - - function actionStateActionEffect(actionQueue, action) { - actionQueue.action = action; - } - - function rerenderActionState(action, initialState, permalink) { - // Unlike useState, useActionState doesn't support render phase updates. - // Also unlike useState, we need to replay all pending updates again in case - // the passthrough value changed. - // - // So instead of a forked re-render implementation that knows how to handle - // render phase udpates, we can use the same implementation as during a - // regular mount or update. - var stateHook = updateWorkInProgressHook(); - var currentStateHook = currentHook; + HooksDispatcherOnRerenderInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return rerenderActionState(action); + }; + + HooksDispatcherOnRerenderInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return rerenderActionState(action); + }; + } - if (currentStateHook !== null) { - // This is an update. Process the update queue. - return updateActionStateImpl(stateHook, currentStateHook, action); + if (enableAsyncActions) { + HooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return rerenderOptimistic(passthrough, reducer); + }; + } + + InvalidNestedHooksDispatcherOnMountInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - updateWorkInProgressHook(); // State - // This is a mount. No updates to process. + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - var state = stateHook.memoizedState; - var actionQueueHook = updateWorkInProgressHook(); - var actionQueue = actionQueueHook.queue; - var dispatch = actionQueue.dispatch; // This may have changed during the rerender. + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountId(); + } + }; + + { + InvalidNestedHooksDispatcherOnMountInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + mountHookTypesDev(); + return mountRefresh(); + }; + } - actionQueueHook.memoizedState = action; // For mount, pending is always false. + { + InvalidNestedHooksDispatcherOnMountInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } - return [state, dispatch, false]; - } + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnMountInDEV.useHostTransitionStatus = useHostTransitionStatus; - function pushEffect(tag, create, inst, deps) { - var effect = { - tag: tag, - create: create, - inst: inst, - deps: deps, - // Circular - next: null - }; - var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + InvalidNestedHooksDispatcherOnMountInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountActionState(action, initialState); + }; - if (componentUpdateQueue === null) { - componentUpdateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; - componentUpdateQueue.lastEffect = effect.next = effect; - } else { - var lastEffect = componentUpdateQueue.lastEffect; + InvalidNestedHooksDispatcherOnMountInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountActionState(action, initialState); + }; + } + + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + InvalidNestedHooksDispatcherOnUpdateInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - if (lastEffect === null) { - componentUpdateQueue.lastEffect = effect.next = effect; - } else { - var firstEffect = lastEffect.next; - lastEffect.next = effect; - effect.next = firstEffect; - componentUpdateQueue.lastEffect = effect; - } + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - return effect; - } - - function createEffectInstance() { - return { - destroy: undefined - }; - } + try { + return updateReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - function mountRef(initialValue) { - var hook = mountWorkInProgressHook(); - var ref = { - current: initialValue - }; - hook.memoizedState = ref; - return ref; - } + try { + return updateState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateId(); + } + }; + + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - function updateRef(initialValue) { - var hook = updateWorkInProgressHook(); - return hook.memoizedState; - } + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } - function mountEffectImpl(fiberFlags, hookFlags, create, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - currentlyRenderingFiber$1.flags |= fiberFlags; - hook.memoizedState = pushEffect( - HasEffect | hookFlags, - create, - createEffectInstance(), - nextDeps - ); - } + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnUpdateInDEV.useHostTransitionStatus = useHostTransitionStatus; - function updateEffectImpl(fiberFlags, hookFlags, create, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var effect = hook.memoizedState; - var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase - // state update or for strict mode. + InvalidNestedHooksDispatcherOnUpdateInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateActionState(action); + }; - if (currentHook !== null) { - if (nextDeps !== null) { - var prevEffect = currentHook.memoizedState; - var prevDeps = prevEffect.deps; + InvalidNestedHooksDispatcherOnUpdateInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateActionState(action); + }; + } + + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateOptimistic(passthrough, reducer); + }; + } + + InvalidNestedHooksDispatcherOnRerenderInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - if (areHookInputsEqual(nextDeps, prevDeps)) { - hook.memoizedState = pushEffect(hookFlags, create, inst, nextDeps); - return; - } - } + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - currentlyRenderingFiber$1.flags |= fiberFlags; - hook.memoizedState = pushEffect( - HasEffect | hookFlags, - create, - inst, - nextDeps - ); - } + try { + return rerenderReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - function mountEffect(create, deps) { - if ( - (currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode && - (currentlyRenderingFiber$1.mode & NoStrictPassiveEffectsMode) === NoMode - ) { - mountEffectImpl( - MountPassiveDev | Passive$1 | PassiveStatic, - Passive, - create, - deps - ); - } else { - mountEffectImpl(Passive$1 | PassiveStatic, Passive, create, deps); - } - } + try { + return rerenderState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateId(); + } + }; + + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - function updateEffect(create, deps) { - updateEffectImpl(Passive$1, Passive, create, deps); - } + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } - function mountInsertionEffect(create, deps) { - mountEffectImpl(Update, Insertion, create, deps); - } + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnRerenderInDEV.useHostTransitionStatus = useHostTransitionStatus; - function updateInsertionEffect(create, deps) { - return updateEffectImpl(Update, Insertion, create, deps); - } + InvalidNestedHooksDispatcherOnRerenderInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderActionState(action); + }; - function mountLayoutEffect(create, deps) { - var fiberFlags = Update | LayoutStatic; + InvalidNestedHooksDispatcherOnRerenderInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderActionState(action); + }; + } + + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderOptimistic(passthrough, reducer); + }; + } +} - if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { - fiberFlags |= MountLayoutDev; - } +var now = Scheduler.unstable_now; +var commitTime = 0; +var layoutEffectStartTime = -1; +var profilerStartTime = -1; +var passiveEffectStartTime = -1; +/** + * Tracks whether the current update was a nested/cascading update (scheduled from a layout effect). + * + * The overall sequence is: + * 1. render + * 2. commit (and call `onRender`, `onCommit`) + * 3. check for nested updates + * 4. flush passive effects (and call `onPostCommit`) + * + * Nested updates are identified in step 3 above, + * but step 4 still applies to the work that was just committed. + * We use two flags to track nested updates then: + * one tracks whether the upcoming update is a nested update, + * and the other tracks whether the current update was a nested update. + * The first value gets synced to the second at the start of the render phase. + */ - return mountEffectImpl(fiberFlags, Layout, create, deps); - } +var currentUpdateIsNested = false; +var nestedUpdateScheduled = false; - function updateLayoutEffect(create, deps) { - return updateEffectImpl(Update, Layout, create, deps); - } +function isCurrentUpdateNested() { + return currentUpdateIsNested; +} - function imperativeHandleEffect(create, ref) { - if (typeof ref === "function") { - var refCallback = ref; - var inst = create(); - refCallback(inst); - return function () { - refCallback(null); - }; - } else if (ref !== null && ref !== undefined) { - var refObject = ref; +function markNestedUpdateScheduled() { + { + nestedUpdateScheduled = true; + } +} - { - if (!refObject.hasOwnProperty("current")) { - error( - "Expected useImperativeHandle() first argument to either be a " + - "ref callback or React.createRef() object. Instead received: %s.", - "an object with keys {" + Object.keys(refObject).join(", ") + "}" - ); - } - } +function resetNestedUpdateFlag() { + { + currentUpdateIsNested = false; + nestedUpdateScheduled = false; + } +} - var _inst = create(); +function syncNestedUpdateFlag() { + { + currentUpdateIsNested = nestedUpdateScheduled; + nestedUpdateScheduled = false; + } +} - refObject.current = _inst; - return function () { - refObject.current = null; - }; - } - } +function getCommitTime() { + return commitTime; +} - function mountImperativeHandle(ref, create, deps) { - { - if (typeof create !== "function") { - error( - "Expected useImperativeHandle() second argument to be a function " + - "that creates a handle. Instead received: %s.", - create !== null ? typeof create : "null" - ); - } - } // TODO: If deps are provided, should we skip comparing the ref itself? +function recordCommitTime() { - var effectDeps = - deps !== null && deps !== undefined ? deps.concat([ref]) : null; - var fiberFlags = Update | LayoutStatic; + commitTime = now(); +} - if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { - fiberFlags |= MountLayoutDev; - } +function startProfilerTimer(fiber) { - mountEffectImpl( - fiberFlags, - Layout, - imperativeHandleEffect.bind(null, create, ref), - effectDeps - ); - } + profilerStartTime = now(); - function updateImperativeHandle(ref, create, deps) { - { - if (typeof create !== "function") { - error( - "Expected useImperativeHandle() second argument to be a function " + - "that creates a handle. Instead received: %s.", - create !== null ? typeof create : "null" - ); - } - } // TODO: If deps are provided, should we skip comparing the ref itself? + if (fiber.actualStartTime < 0) { + fiber.actualStartTime = now(); + } +} - var effectDeps = - deps !== null && deps !== undefined ? deps.concat([ref]) : null; - updateEffectImpl( - Update, - Layout, - imperativeHandleEffect.bind(null, create, ref), - effectDeps - ); - } +function stopProfilerTimerIfRunning(fiber) { + + profilerStartTime = -1; +} - function mountDebugValue(value, formatterFn) { - // This hook is normally a no-op. - // The react-debug-hooks package injects its own implementation - // so that e.g. DevTools can display custom hook values. +function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) { + + if (profilerStartTime >= 0) { + var elapsedTime = now() - profilerStartTime; + fiber.actualDuration += elapsedTime; + + if (overrideBaseTime) { + fiber.selfBaseDuration = elapsedTime; } - var updateDebugValue = mountDebugValue; + profilerStartTime = -1; + } +} + +function recordLayoutEffectDuration(fiber) { - function mountCallback(callback, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - hook.memoizedState = [callback, nextDeps]; - return callback; - } + if (layoutEffectStartTime >= 0) { + var elapsedTime = now() - layoutEffectStartTime; + layoutEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor + // Or the root (for the DevTools Profiler to read) - function updateCallback(callback, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var prevState = hook.memoizedState; + var parentFiber = fiber.return; - if (nextDeps !== null) { - var prevDeps = prevState[1]; + while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + root.effectDuration += elapsedTime; + return; - if (areHookInputsEqual(nextDeps, prevDeps)) { - return prevState[0]; - } + case Profiler: + var parentStateNode = parentFiber.stateNode; + parentStateNode.effectDuration += elapsedTime; + return; } - hook.memoizedState = [callback, nextDeps]; - return callback; + parentFiber = parentFiber.return; } + } +} - function mountMemo(nextCreate, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var nextValue = nextCreate(); +function recordPassiveEffectDuration(fiber) { - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - nextCreate(); - setIsStrictModeForDevtools(false); - } + if (passiveEffectStartTime >= 0) { + var elapsedTime = now() - passiveEffectStartTime; + passiveEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor + // Or the root (for the DevTools Profiler to read) - hook.memoizedState = [nextValue, nextDeps]; - return nextValue; - } + var parentFiber = fiber.return; - function updateMemo(nextCreate, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var prevState = hook.memoizedState; // Assume these are defined. If they're not, areHookInputsEqual will warn. + while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; - if (nextDeps !== null) { - var prevDeps = prevState[1]; + if (root !== null) { + root.passiveEffectDuration += elapsedTime; + } - if (areHookInputsEqual(nextDeps, prevDeps)) { - return prevState[0]; - } - } + return; - var nextValue = nextCreate(); + case Profiler: + var parentStateNode = parentFiber.stateNode; - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - nextCreate(); - setIsStrictModeForDevtools(false); - } + if (parentStateNode !== null) { + // Detached fibers have their state node cleared out. + // In this case, the return pointer is also cleared out, + // so we won't be able to report the time spent in this Profiler's subtree. + parentStateNode.passiveEffectDuration += elapsedTime; + } - hook.memoizedState = [nextValue, nextDeps]; - return nextValue; - } + return; + } - function mountDeferredValue(value, initialValue) { - var hook = mountWorkInProgressHook(); - return mountDeferredValueImpl(hook, value, initialValue); + parentFiber = parentFiber.return; } + } +} - function updateDeferredValue(value, initialValue) { - var hook = updateWorkInProgressHook(); - var resolvedCurrentHook = currentHook; - var prevValue = resolvedCurrentHook.memoizedState; - return updateDeferredValueImpl(hook, prevValue, value, initialValue); - } +function startLayoutEffectTimer() { - function rerenderDeferredValue(value, initialValue) { - var hook = updateWorkInProgressHook(); + layoutEffectStartTime = now(); +} - if (currentHook === null) { - // This is a rerender during a mount. - return mountDeferredValueImpl(hook, value, initialValue); - } else { - // This is a rerender during an update. - var prevValue = currentHook.memoizedState; - return updateDeferredValueImpl(hook, prevValue, value, initialValue); - } - } - - function mountDeferredValueImpl(hook, value, initialValue) { - if ( - // When `initialValue` is provided, we defer the initial render even if the - // current render is not synchronous. - initialValue !== undefined && // However, to avoid waterfalls, we do not defer if this render - // was itself spawned by an earlier useDeferredValue. Check if DeferredLane - // is part of the render lanes. - !includesSomeLane(renderLanes, DeferredLane) - ) { - // Render with the initial value - hook.memoizedState = initialValue; // Schedule a deferred render to switch to the final value. - - var deferredLane = requestDeferredLane(); - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - deferredLane - ); - markSkippedUpdateLanes(deferredLane); - return initialValue; - } else { - hook.memoizedState = value; - return value; - } - } +function startPassiveEffectTimer() { - function updateDeferredValueImpl(hook, prevValue, value, initialValue) { - if (objectIs(value, prevValue)) { - // The incoming value is referentially identical to the currently rendered - // value, so we can bail out quickly. - return value; - } else { - // Received a new value that's different from the current value. - // Check if we're inside a hidden tree - if (isCurrentTreeHidden()) { - // Revealing a prerendered tree is considered the same as mounting new - // one, so we reuse the "mount" path in this case. - var resultValue = mountDeferredValueImpl(hook, value, initialValue); // Unlike during an actual mount, we need to mark this as an update if - // the value changed. - - if (!objectIs(resultValue, prevValue)) { - markWorkInProgressReceivedUpdate(); - } + passiveEffectStartTime = now(); +} - return resultValue; - } +function transferActualDuration(fiber) { + // Transfer time spent rendering these children so we don't lose it + // after we rerender. This is used as a helper in special cases + // where we should count the work of multiple passes. + var child = fiber.child; + + while (child) { + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + fiber.actualDuration += child.actualDuration; + child = child.sibling; + } +} - var shouldDeferValue = !includesOnlyNonUrgentLanes(renderLanes); +var fakeInternalInstance = {}; +var didWarnAboutStateAssignmentForComponent; +var didWarnAboutUninitializedState; +var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate; +var didWarnAboutLegacyLifecyclesAndDerivedState; +var didWarnAboutUndefinedDerivedState; +var didWarnAboutDirectlyAssigningPropsToState; +var didWarnAboutContextTypeAndContextTypes; +var didWarnAboutInvalidateContextType; +var didWarnOnInvalidCallback; + +{ + didWarnAboutStateAssignmentForComponent = new Set(); + didWarnAboutUninitializedState = new Set(); + didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set(); + didWarnAboutLegacyLifecyclesAndDerivedState = new Set(); + didWarnAboutDirectlyAssigningPropsToState = new Set(); + didWarnAboutUndefinedDerivedState = new Set(); + didWarnAboutContextTypeAndContextTypes = new Set(); + didWarnAboutInvalidateContextType = new Set(); + didWarnOnInvalidCallback = new Set(); // This is so gross but it's at least non-critical and can be removed if + // it causes problems. This is meant to give a nicer error message for + // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component, + // ...)) which otherwise throws a "_processChildContext is not a function" + // exception. + + Object.defineProperty(fakeInternalInstance, '_processChildContext', { + enumerable: false, + value: function () { + throw new Error('_processChildContext is not available in React 16+. This likely ' + 'means you have multiple copies of React and are attempting to nest ' + 'a React 15 tree inside a React 16 tree using ' + "unstable_renderSubtreeIntoContainer, which isn't supported. Try " + 'to make sure you have only one copy of React (and ideally, switch ' + 'to ReactDOM.createPortal).'); + } + }); + Object.freeze(fakeInternalInstance); +} - if (shouldDeferValue) { - // This is an urgent update. Since the value has changed, keep using the - // previous value and spawn a deferred render to update it later. - // Schedule a deferred render - var deferredLane = requestDeferredLane(); - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - deferredLane - ); - markSkippedUpdateLanes(deferredLane); // Reuse the previous value. We do not need to mark this as an update, - // because we did not render a new value. +function warnOnInvalidCallback(callback) { + { + if (callback === null || typeof callback === 'function') { + return; + } // eslint-disable-next-line react-internal/safe-string-coercion - return prevValue; - } else { - // This is not an urgent update, so we can use the latest value regardless - // of what it is. No need to defer it. - // Mark this as an update to prevent the fiber from bailing out. - markWorkInProgressReceivedUpdate(); - hook.memoizedState = value; - return value; - } - } - } - - function startTransition( - fiber, - queue, - pendingState, - finishedState, - callback, - options - ) { - var previousPriority = getCurrentUpdatePriority(); - setCurrentUpdatePriority( - higherEventPriority(previousPriority, ContinuousEventPriority) - ); - var prevTransition = ReactSharedInternals.T; - var currentTransition = { - _callbacks: new Set() - }; - if (enableAsyncActions) { - // We don't really need to use an optimistic update here, because we - // schedule a second "revert" update below (which we use to suspend the - // transition until the async action scope has finished). But we'll use an - // optimistic update anyway to make it less likely the behavior accidentally - // diverges; for example, both an optimistic update and this one should - // share the same lane. - ReactSharedInternals.T = currentTransition; - dispatchOptimisticSetState(fiber, false, queue, pendingState); - } else { - ReactSharedInternals.T = null; - dispatchSetState(fiber, queue, pendingState); - ReactSharedInternals.T = currentTransition; - } + var key = String(callback); - { - currentTransition._updatedFibers = new Set(); - } + if (!didWarnOnInvalidCallback.has(key)) { + didWarnOnInvalidCallback.add(key); - try { - if (enableAsyncActions) { - var returnValue = callback(); // Check if we're inside an async action scope. If so, we'll entangle - // this new action with the existing scope. - // - // If we're not already inside an async action scope, and this action is - // async, then we'll create a new async scope. - // - // In the async case, the resulting render will suspend until the async - // action scope has finished. - - if ( - returnValue !== null && - typeof returnValue === "object" && - typeof returnValue.then === "function" - ) { - var thenable = returnValue; - notifyTransitionCallbacks(currentTransition, thenable); // Create a thenable that resolves to `finishedState` once the async - // action has completed. - - var thenableForFinishedState = chainThenableValue( - thenable, - finishedState - ); - dispatchSetState(fiber, queue, thenableForFinishedState); - } else { - dispatchSetState(fiber, queue, finishedState); - } - } else { - // Async actions are not enabled. - dispatchSetState(fiber, queue, finishedState); - callback(); - } - } catch (error) { - if (enableAsyncActions) { - // This is a trick to get the `useTransition` hook to rethrow the error. - // When it unwraps the thenable with the `use` algorithm, the error - // will be thrown. - var rejectedThenable = { - then: function () {}, - status: "rejected", - reason: error - }; - dispatchSetState(fiber, queue, rejectedThenable); - } else { - // The error rethrowing behavior is only enabled when the async actions - // feature is on, even for sync actions. - throw error; - } - } finally { - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; + error('Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback); + } + } +} - { - if (prevTransition === null && currentTransition._updatedFibers) { - var updatedFibersCount = currentTransition._updatedFibers.size; +function warnOnUndefinedDerivedState(type, partialState) { + { + if (partialState === undefined) { + var componentName = getComponentNameFromType(type) || 'Component'; - currentTransition._updatedFibers.clear(); + if (!didWarnAboutUndefinedDerivedState.has(componentName)) { + didWarnAboutUndefinedDerivedState.add(componentName); - if (updatedFibersCount > 10) { - warn( - "Detected a large number of updates inside startTransition. " + - "If this is due to a subscription please re-write it to use React provided hooks. " + - "Otherwise concurrent mode guarantees are off the table." - ); - } - } - } + error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', componentName); } } + } +} - function mountTransition() { - var stateHook = mountStateImpl(false); // The `start` method never changes. - - var start = startTransition.bind( - null, - currentlyRenderingFiber$1, - stateHook.queue, - true, - false - ); - var hook = mountWorkInProgressHook(); - hook.memoizedState = start; - return [false, start]; - } +function applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, nextProps) { + var prevState = workInProgress.memoizedState; + var partialState = getDerivedStateFromProps(nextProps, prevState); - function updateTransition() { - var _updateState2 = updateState(), - booleanOrThenable = _updateState2[0]; + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - var hook = updateWorkInProgressHook(); - var start = hook.memoizedState; - var isPending = - typeof booleanOrThenable === "boolean" - ? booleanOrThenable // This will suspend until the async action scope has finished. - : useThenable(booleanOrThenable); - return [isPending, start]; + try { + // Invoke the function an extra time to help detect side-effects. + partialState = getDerivedStateFromProps(nextProps, prevState); + } finally { + setIsStrictModeForDevtools(false); + } } - function rerenderTransition() { - var _rerenderState = rerenderState(), - booleanOrThenable = _rerenderState[0]; + warnOnUndefinedDerivedState(ctor, partialState); + } // Merge the partial state and the previous state. - var hook = updateWorkInProgressHook(); - var start = hook.memoizedState; - var isPending = - typeof booleanOrThenable === "boolean" - ? booleanOrThenable // This will suspend until the async action scope has finished. - : useThenable(booleanOrThenable); - return [isPending, start]; - } - - function useHostTransitionStatus() { - if (!enableAsyncActions) { - throw new Error("Not implemented."); - } - var status = readContext(HostTransitionContext); - return status !== null ? status : NotPendingTransition; - } + var memoizedState = partialState === null || partialState === undefined ? prevState : assign({}, prevState, partialState); + workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the + // base state. - function mountId() { - var hook = mountWorkInProgressHook(); - var root = getWorkInProgressRoot(); // TODO: In Fizz, id generation is specific to each server config. Maybe we - // should do this in Fiber, too? Deferring this decision for now because - // there's no other place to store the prefix except for an internal field on - // the public createRoot object, which the fiber tree does not currently have - // a reference to. + if (workInProgress.lanes === NoLanes) { + // Queue is always non-null for classes + var updateQueue = workInProgress.updateQueue; + updateQueue.baseState = memoizedState; + } +} - var identifierPrefix = root.identifierPrefix; - var id; +var classComponentUpdater = { + isMounted: isMounted, + // $FlowFixMe[missing-local-annot] + enqueueSetState: function (inst, payload, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.payload = payload; + if (callback !== undefined && callback !== null) { { - // Use a lowercase r prefix for client-generated ids. - var globalClientId = globalClientIdCounter++; - id = ":" + identifierPrefix + "r" + globalClientId.toString(32) + ":"; + warnOnInvalidCallback(callback); } - hook.memoizedState = id; - return id; + update.callback = callback; } - function updateId() { - var hook = updateWorkInProgressHook(); - var id = hook.memoizedState; - return id; - } + var root = enqueueUpdate(fiber, update, lane); - function mountRefresh() { - var hook = mountWorkInProgressHook(); - var refresh = (hook.memoizedState = refreshCache.bind( - null, - currentlyRenderingFiber$1 - )); - return refresh; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); } - function updateRefresh() { - var hook = updateWorkInProgressHook(); - return hook.memoizedState; + { + markStateUpdateScheduled(fiber, lane); } + }, + enqueueReplaceState: function (inst, payload, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.tag = ReplaceState; + update.payload = payload; - function refreshCache(fiber, seedKey, seedValue) { - // TODO: Consider warning if the refresh is at discrete priority, or if we - // otherwise suspect that it wasn't batched properly. - - var provider = fiber.return; - - while (provider !== null) { - switch (provider.tag) { - case CacheComponent: - case HostRoot: { - // Schedule an update on the cache boundary to trigger a refresh. - var lane = requestUpdateLane(provider); - var refreshUpdate = createUpdate(lane); - var root = enqueueUpdate(provider, refreshUpdate, lane); - - if (root !== null) { - scheduleUpdateOnFiber(root, provider, lane); - entangleTransitions(root, provider, lane); - } // TODO: If a refresh never commits, the new cache created here must be - // released. A simple case is start refreshing a cache boundary, but then - // unmount that boundary before the refresh completes. + if (callback !== undefined && callback !== null) { + { + warnOnInvalidCallback(callback); + } - var seededCache = createCache(); + update.callback = callback; + } - if (seedKey !== null && seedKey !== undefined && root !== null) { - { - { - error( - "The seed argument is not enabled outside experimental channels." - ); - } - } - } + var root = enqueueUpdate(fiber, update, lane); - var payload = { - cache: seededCache - }; - refreshUpdate.payload = payload; - return; - } - } + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); + } - provider = provider.return; - } // TODO: Warn if unmounted? + { + markStateUpdateScheduled(fiber, lane); } + }, + // $FlowFixMe[missing-local-annot] + enqueueForceUpdate: function (inst, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.tag = ForceUpdate; - function dispatchReducerAction(fiber, queue, action) { + if (callback !== undefined && callback !== null) { { - if (typeof arguments[3] === "function") { - error( - "State updates from the useState() and useReducer() Hooks don't support the " + - "second callback argument. To execute a side effect after " + - "rendering, declare it in the component body with useEffect()." - ); - } - } - - var lane = requestUpdateLane(fiber); - var update = { - lane: lane, - revertLane: NoLane, - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; - - if (isRenderPhaseUpdate(fiber)) { - enqueueRenderPhaseUpdate(queue, update); - } else { - var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitionUpdate(root, queue, lane); - } + warnOnInvalidCallback(callback); } - markUpdateInDevTools(fiber, lane); + update.callback = callback; } - function dispatchSetState(fiber, queue, action) { - { - if (typeof arguments[3] === "function") { - error( - "State updates from the useState() and useReducer() Hooks don't support the " + - "second callback argument. To execute a side effect after " + - "rendering, declare it in the component body with useEffect()." - ); - } - } - - var lane = requestUpdateLane(fiber); - var update = { - lane: lane, - revertLane: NoLane, - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; - - if (isRenderPhaseUpdate(fiber)) { - enqueueRenderPhaseUpdate(queue, update); - } else { - var alternate = fiber.alternate; + var root = enqueueUpdate(fiber, update, lane); - if ( - fiber.lanes === NoLanes && - (alternate === null || alternate.lanes === NoLanes) - ) { - // The queue is currently empty, which means we can eagerly compute the - // next state before entering the render phase. If the new state is the - // same as the current state, we may be able to bail out entirely. - var lastRenderedReducer = queue.lastRenderedReducer; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); + } - if (lastRenderedReducer !== null) { - var prevDispatcher = null; + { + markForceUpdateScheduled(fiber, lane); + } + } +}; - { - prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = - InvalidNestedHooksDispatcherOnUpdateInDEV; - } +function checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) { + var instance = workInProgress.stateNode; - try { - var currentState = queue.lastRenderedState; - var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute - // it, on the update object. If the reducer hasn't changed by the - // time we enter the render phase, then the eager state can be used - // without calling the reducer again. - - update.hasEagerState = true; - update.eagerState = eagerState; - - if (objectIs(eagerState, currentState)) { - // Fast path. We can bail out without scheduling React to re-render. - // It's still possible that we'll need to rebase this update later, - // if the component re-renders for a different reason and by that - // time the reducer has changed. - // TODO: Do we still need to entangle transitions in this case? - enqueueConcurrentHookUpdateAndEagerlyBailout( - fiber, - queue, - update - ); - return; - } - } catch (error) { - // Suppress the error. It will throw again in the render phase. - } finally { - { - ReactSharedInternals.H = prevDispatcher; - } - } - } - } + if (typeof instance.shouldComponentUpdate === 'function') { + var shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext); - var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitionUpdate(root, queue, lane); + try { + // Invoke the function an extra time to help detect side-effects. + shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext); + } finally { + setIsStrictModeForDevtools(false); } } - markUpdateInDevTools(fiber, lane); + if (shouldUpdate === undefined) { + error('%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', getComponentNameFromType(ctor) || 'Component'); + } } - function dispatchOptimisticSetState( - fiber, - throwIfDuringRender, - queue, - action - ) { - var transition = requestCurrentTransition(); + return shouldUpdate; + } - { - if (transition === null) { - // An optimistic update occurred, but startTransition is not on the stack. - // There are two likely scenarios. - // One possibility is that the optimistic update is triggered by a regular - // event handler (e.g. `onSubmit`) instead of an action. This is a mistake - // and we will warn. - // The other possibility is the optimistic update is inside an async - // action, but after an `await`. In this case, we can make it "just work" - // by associating the optimistic update with the pending async action. - // Technically it's possible that the optimistic update is unrelated to - // the pending action, but we don't have a way of knowing this for sure - // because browsers currently do not provide a way to track async scope. - // (The AsyncContext proposal, if it lands, will solve this in the - // future.) However, this is no different than the problem of unrelated - // transitions being grouped together — it's not wrong per se, but it's - // not ideal. - // Once AsyncContext starts landing in browsers, we will provide better - // warnings in development for these cases. - if (peekEntangledActionLane() !== NoLane); - else { - // There's no pending async action. The most likely cause is that we're - // inside a regular event handler (e.g. onSubmit) instead of an action. - error( - "An optimistic state update occurred outside a transition or " + - "action. To fix, move the update to an action, or wrap " + - "with startTransition." - ); - } - } - } + if (ctor.prototype && ctor.prototype.isPureReactComponent) { + return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState); + } - var update = { - // An optimistic update commits synchronously. - lane: SyncLane, - // After committing, the optimistic update is "reverted" using the same - // lane as the transition it's associated with. - revertLane: requestTransitionLane(), - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; + return true; +} - if (isRenderPhaseUpdate(fiber)) { - // When calling startTransition during render, this warns instead of - // throwing because throwing would be a breaking change. setOptimisticState - // is a new API so it's OK to throw. - if (throwIfDuringRender) { - throw new Error("Cannot update optimistic state while rendering."); - } else { - // startTransition was called during render. We don't need to do anything - // besides warn here because the render phase update would be overidden by - // the second update, anyway. We can remove this branch and make it throw - // in a future release. - { - error("Cannot call startTransition while rendering."); - } - } - } else { - var root = enqueueConcurrentHookUpdate(fiber, queue, update, SyncLane); +function checkClassInstance(workInProgress, ctor, newProps) { + var instance = workInProgress.stateNode; - if (root !== null) { - // NOTE: The optimistic update implementation assumes that the transition - // will never be attempted before the optimistic update. This currently - // holds because the optimistic update is always synchronous. If we ever - // change that, we'll need to account for this. - scheduleUpdateOnFiber(root, fiber, SyncLane); // Optimistic updates are always synchronous, so we don't need to call - // entangleTransitionUpdate here. - } - } + { + var name = getComponentNameFromType(ctor) || 'Component'; + var renderPresent = instance.render; - markUpdateInDevTools(fiber, SyncLane); + if (!renderPresent) { + if (ctor.prototype && typeof ctor.prototype.render === 'function') { + error('No `render` method found on the %s ' + 'instance: did you accidentally return an object from the constructor?', name); + } else { + error('No `render` method found on the %s ' + 'instance: you may have forgotten to define `render`.', name); + } } - function isRenderPhaseUpdate(fiber) { - var alternate = fiber.alternate; - return ( - fiber === currentlyRenderingFiber$1 || - (alternate !== null && alternate === currentlyRenderingFiber$1) - ); + if (instance.getInitialState && !instance.getInitialState.isReactClassApproved && !instance.state) { + error('getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name); } - function enqueueRenderPhaseUpdate(queue, update) { - // This is a render phase update. Stash it in a lazily-created map of - // queue -> linked list of updates. After this render pass, we'll restart - // and apply the stashed updates on top of the work-in-progress hook. - didScheduleRenderPhaseUpdateDuringThisPass = - didScheduleRenderPhaseUpdate = true; - var pending = queue.pending; - - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + if (instance.getDefaultProps && !instance.getDefaultProps.isReactClassApproved) { + error('getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name); + } - queue.pending = update; - } // TODO: Move to ReactFiberConcurrentUpdates? + if (instance.propTypes) { + error('propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name); + } - function entangleTransitionUpdate(root, queue, lane) { - if (isTransitionLane(lane)) { - var queueLanes = queue.lanes; // If any entangled lanes are no longer pending on the root, then they - // must have finished. We can remove them from the shared queue, which - // represents a superset of the actually pending lanes. In some cases we - // may entangle more than we need to, but that's OK. In fact it's worse if - // we *don't* entangle when we should. + if (instance.contextType) { + error('contextType was defined as an instance property on %s. Use a static ' + 'property to define contextType instead.', name); + } - queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + { + if (instance.contextTypes) { + error('contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name); + } - var newQueueLanes = mergeLanes(queueLanes, lane); - queue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if - // the lane finished since the last time we entangled it. So we need to - // entangle it again, just to be sure. + if (ctor.contextType && ctor.contextTypes && !didWarnAboutContextTypeAndContextTypes.has(ctor)) { + didWarnAboutContextTypeAndContextTypes.add(ctor); - markRootEntangled(root, newQueueLanes); + error('%s declares both contextTypes and contextType static properties. ' + 'The legacy contextTypes property will be ignored.', name); } } - function markUpdateInDevTools(fiber, lane, action) { - { - markStateUpdateScheduled(fiber, lane); - } - } - - var ContextOnlyDispatcher = { - readContext: readContext, - use: use, - useCallback: throwInvalidHookError, - useContext: throwInvalidHookError, - useEffect: throwInvalidHookError, - useImperativeHandle: throwInvalidHookError, - useLayoutEffect: throwInvalidHookError, - useInsertionEffect: throwInvalidHookError, - useMemo: throwInvalidHookError, - useReducer: throwInvalidHookError, - useRef: throwInvalidHookError, - useState: throwInvalidHookError, - useDebugValue: throwInvalidHookError, - useDeferredValue: throwInvalidHookError, - useTransition: throwInvalidHookError, - useSyncExternalStore: throwInvalidHookError, - useId: throwInvalidHookError - }; - - { - ContextOnlyDispatcher.useCacheRefresh = throwInvalidHookError; + if (typeof instance.componentShouldUpdate === 'function') { + error('%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name); } - { - ContextOnlyDispatcher.useMemoCache = throwInvalidHookError; + if (ctor.prototype && ctor.prototype.isPureReactComponent && typeof instance.shouldComponentUpdate !== 'undefined') { + error('%s has a method called shouldComponentUpdate(). ' + 'shouldComponentUpdate should not be used when extending React.PureComponent. ' + 'Please extend React.Component if shouldComponentUpdate is used.', getComponentNameFromType(ctor) || 'A pure component'); } - if (enableAsyncActions) { - ContextOnlyDispatcher.useHostTransitionStatus = throwInvalidHookError; - ContextOnlyDispatcher.useFormState = throwInvalidHookError; - ContextOnlyDispatcher.useActionState = throwInvalidHookError; + if (typeof instance.componentDidUnmount === 'function') { + error('%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name); } - if (enableAsyncActions) { - ContextOnlyDispatcher.useOptimistic = throwInvalidHookError; + if (typeof instance.componentDidReceiveProps === 'function') { + error('%s has a method called ' + 'componentDidReceiveProps(). But there is no such lifecycle method. ' + 'If you meant to update the state in response to changing props, ' + 'use componentWillReceiveProps(). If you meant to fetch data or ' + 'run side-effects or mutations after React has updated the UI, use componentDidUpdate().', name); } - var HooksDispatcherOnMountInDEV = null; - var HooksDispatcherOnMountWithHookTypesInDEV = null; - var HooksDispatcherOnUpdateInDEV = null; - var HooksDispatcherOnRerenderInDEV = null; - var InvalidNestedHooksDispatcherOnMountInDEV = null; - var InvalidNestedHooksDispatcherOnUpdateInDEV = null; - var InvalidNestedHooksDispatcherOnRerenderInDEV = null; - - { - var warnInvalidContextAccess = function () { - error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - }; - - var warnInvalidHookAccess = function () { - error( - "Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. " + - "You can only call Hooks at the top level of your React function. " + - "For more information, see " + - "https://react.dev/link/rules-of-hooks" - ); - }; - - HooksDispatcherOnMountInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - mountHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.componentWillRecieveProps === 'function') { + error('%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name); + } - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.UNSAFE_componentWillRecieveProps === 'function') { + error('%s has a method called ' + 'UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?', name); + } - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - mountHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + var hasMutatedProps = instance.props !== newProps; - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - mountHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - mountHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - mountHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - mountHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - mountHookTypesDev(); - return mountId(); - } - }; + if (instance.props !== undefined && hasMutatedProps) { + error('When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name); + } - { - HooksDispatcherOnMountInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - mountHookTypesDev(); - return mountRefresh(); - }; - } + if (instance.defaultProps) { + error('Setting defaultProps as an instance property on %s is not supported and will be ignored.' + ' Instead, define defaultProps as a static property on %s.', name, name); + } - { - HooksDispatcherOnMountInDEV.useMemoCache = useMemoCache; - } + if (typeof instance.getSnapshotBeforeUpdate === 'function' && typeof instance.componentDidUpdate !== 'function' && !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor)) { + didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor); - if (enableAsyncActions) { - HooksDispatcherOnMountInDEV.useHostTransitionStatus = - useHostTransitionStatus; + error('%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). ' + 'This component defines getSnapshotBeforeUpdate() only.', getComponentNameFromType(ctor)); + } - HooksDispatcherOnMountInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - mountHookTypesDev(); - return mountActionState(action, initialState); - }; + if (typeof instance.getDerivedStateFromProps === 'function') { + error('%s: getDerivedStateFromProps() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name); + } - HooksDispatcherOnMountInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - mountHookTypesDev(); - return mountActionState(action, initialState); - }; - } + if (typeof instance.getDerivedStateFromError === 'function') { + error('%s: getDerivedStateFromError() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name); + } - if (enableAsyncActions) { - HooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - mountHookTypesDev(); - return mountOptimistic(passthrough); - }; - } + if (typeof ctor.getSnapshotBeforeUpdate === 'function') { + error('%s: getSnapshotBeforeUpdate() is defined as a static method ' + 'and will be ignored. Instead, declare it as an instance method.', name); + } - HooksDispatcherOnMountWithHookTypesInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + var state = instance.state; - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (state && (typeof state !== 'object' || isArray(state))) { + error('%s.state: must be set to an object or null', name); + } - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.getChildContext === 'function' && typeof ctor.childContextTypes !== 'object') { + error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', name); + } + } +} - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return mountId(); +function constructClassInstance(workInProgress, ctor, props) { + var isLegacyContextConsumer = false; + var unmaskedContext = emptyContextObject; + var context = emptyContextObject; + var contextType = ctor.contextType; + + { + if ('contextType' in ctor) { + var isValid = // Allow null for conditional declaration + contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE; + + if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) { + didWarnAboutInvalidateContextType.add(ctor); + var addendum = ''; + + if (contextType === undefined) { + addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.'; + } else if (typeof contextType !== 'object') { + addendum = ' However, it is set to a ' + typeof contextType + '.'; + } else if (contextType.$$typeof === REACT_CONSUMER_TYPE) { + addendum = ' Did you accidentally pass the Context.Consumer instead?'; + } else { + addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.'; } - }; - { - HooksDispatcherOnMountWithHookTypesInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return mountRefresh(); - }; + error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentNameFromType(ctor) || 'Component', addendum); } + } + } - { - HooksDispatcherOnMountWithHookTypesInDEV.useMemoCache = useMemoCache; - } + if (typeof contextType === 'object' && contextType !== null) { + context = readContext(contextType); + } else { + unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + var contextTypes = ctor.contextTypes; + isLegacyContextConsumer = contextTypes !== null && contextTypes !== undefined; + context = isLegacyContextConsumer ? getMaskedContext(workInProgress, unmaskedContext) : emptyContextObject; + } - if (enableAsyncActions) { - HooksDispatcherOnMountWithHookTypesInDEV.useHostTransitionStatus = - useHostTransitionStatus; + var instance = new ctor(props, context); // Instantiate twice to help detect side-effects. - HooksDispatcherOnMountWithHookTypesInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return mountActionState(action, initialState); - }; + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - HooksDispatcherOnMountWithHookTypesInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return mountActionState(action, initialState); - }; + try { + instance = new ctor(props, context); // eslint-disable-line no-new + } finally { + setIsStrictModeForDevtools(false); } + } + } - if (enableAsyncActions) { - HooksDispatcherOnMountWithHookTypesInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return mountOptimistic(passthrough); - }; - } + var state = workInProgress.memoizedState = instance.state !== null && instance.state !== undefined ? instance.state : null; + instance.updater = classComponentUpdater; + workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates - HooksDispatcherOnUpdateInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + set(instance, workInProgress); - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + { + instance._reactInternalInstance = fakeInternalInstance; + } - try { - return updateReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + { + if (typeof ctor.getDerivedStateFromProps === 'function' && state === null) { + var componentName = getComponentNameFromType(ctor) || 'Component'; - try { - return updateState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return updateDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return updateTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return updateId(); - } - }; + if (!didWarnAboutUninitializedState.has(componentName)) { + didWarnAboutUninitializedState.add(componentName); - { - HooksDispatcherOnUpdateInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; + error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, instance.state === null ? 'null' : 'undefined', componentName); } + } // If new component APIs are defined, "unsafe" lifecycles won't be called. + // Warn about these lifecycles if they are present. + // Don't warn about react-lifecycles-compat polyfilled methods though. + + + if (typeof ctor.getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function') { + var foundWillMountName = null; + var foundWillReceivePropsName = null; + var foundWillUpdateName = null; - { - HooksDispatcherOnUpdateInDEV.useMemoCache = useMemoCache; - } - - if (enableAsyncActions) { - HooksDispatcherOnUpdateInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnUpdateInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return updateActionState(action); - }; + if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true) { + foundWillMountName = 'componentWillMount'; + } else if (typeof instance.UNSAFE_componentWillMount === 'function') { + foundWillMountName = 'UNSAFE_componentWillMount'; + } - HooksDispatcherOnUpdateInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return updateActionState(action); - }; + if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) { + foundWillReceivePropsName = 'componentWillReceiveProps'; + } else if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + foundWillReceivePropsName = 'UNSAFE_componentWillReceiveProps'; } - if (enableAsyncActions) { - HooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return updateOptimistic(passthrough, reducer); - }; + if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) { + foundWillUpdateName = 'componentWillUpdate'; + } else if (typeof instance.UNSAFE_componentWillUpdate === 'function') { + foundWillUpdateName = 'UNSAFE_componentWillUpdate'; } - HooksDispatcherOnRerenderInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + if (foundWillMountName !== null || foundWillReceivePropsName !== null || foundWillUpdateName !== null) { + var _componentName = getComponentNameFromType(ctor) || 'Component'; - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + var newApiName = typeof ctor.getDerivedStateFromProps === 'function' ? 'getDerivedStateFromProps()' : 'getSnapshotBeforeUpdate()'; - try { - return rerenderReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + if (!didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName)) { + didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName); - try { - return rerenderState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return rerenderDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return rerenderTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return updateId(); + error('Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n' + '%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n' + 'The above lifecycles should be removed. Learn more about this warning here:\n' + 'https://react.dev/link/unsafe-component-lifecycles', _componentName, newApiName, foundWillMountName !== null ? "\n " + foundWillMountName : '', foundWillReceivePropsName !== null ? "\n " + foundWillReceivePropsName : '', foundWillUpdateName !== null ? "\n " + foundWillUpdateName : ''); } - }; - - { - HooksDispatcherOnRerenderInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; } + } + } // Cache unmasked context so we can avoid recreating masked context unless necessary. + // ReactFiberContext usually updates this cache but can't for newly-created instances. - { - HooksDispatcherOnRerenderInDEV.useMemoCache = useMemoCache; - } - - if (enableAsyncActions) { - HooksDispatcherOnRerenderInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnRerenderInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return rerenderActionState(action); - }; - HooksDispatcherOnRerenderInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return rerenderActionState(action); - }; - } + if (isLegacyContextConsumer) { + cacheContext(workInProgress, unmaskedContext, context); + } - if (enableAsyncActions) { - HooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return rerenderOptimistic(passthrough, reducer); - }; - } + return instance; +} - InvalidNestedHooksDispatcherOnMountInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; +function callComponentWillMount(workInProgress, instance) { + var oldState = instance.state; - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.componentWillMount === 'function') { + instance.componentWillMount(); + } - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.UNSAFE_componentWillMount === 'function') { + instance.UNSAFE_componentWillMount(); + } - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountId(); - } - }; + if (oldState !== instance.state) { + { + error('%s.componentWillMount(): Assigning directly to this.state is ' + "deprecated (except inside a component's " + 'constructor). Use setState instead.', getComponentNameFromFiber(workInProgress) || 'Component'); + } - { - InvalidNestedHooksDispatcherOnMountInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - mountHookTypesDev(); - return mountRefresh(); - }; - } + classComponentUpdater.enqueueReplaceState(instance, instance.state, null); + } +} - { - InvalidNestedHooksDispatcherOnMountInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; - } +function callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext) { + var oldState = instance.state; - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnMountInDEV.useHostTransitionStatus = - useHostTransitionStatus; + if (typeof instance.componentWillReceiveProps === 'function') { + instance.componentWillReceiveProps(newProps, nextContext); + } - InvalidNestedHooksDispatcherOnMountInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountActionState(action, initialState); - }; + if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + instance.UNSAFE_componentWillReceiveProps(newProps, nextContext); + } - InvalidNestedHooksDispatcherOnMountInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountActionState(action, initialState); - }; - } + if (instance.state !== oldState) { + { + var componentName = getComponentNameFromFiber(workInProgress) || 'Component'; - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnMountInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountOptimistic(passthrough); - }; - } + if (!didWarnAboutStateAssignmentForComponent.has(componentName)) { + didWarnAboutStateAssignmentForComponent.add(componentName); - InvalidNestedHooksDispatcherOnUpdateInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + error('%s.componentWillReceiveProps(): Assigning directly to ' + "this.state is deprecated (except inside a component's " + 'constructor). Use setState instead.', componentName); + } + } - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + classComponentUpdater.enqueueReplaceState(instance, instance.state, null); + } +} // Invokes the mount life-cycles on a previously never rendered instance. - try { - return updateReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - try { - return updateState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateId(); - } - }; +function mountClassInstance(workInProgress, ctor, newProps, renderLanes) { + { + checkClassInstance(workInProgress, ctor, newProps); + } - { - InvalidNestedHooksDispatcherOnUpdateInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; - } + var instance = workInProgress.stateNode; + instance.props = newProps; + instance.state = workInProgress.memoizedState; + instance.refs = {}; + initializeUpdateQueue(workInProgress); + var contextType = ctor.contextType; - { - InvalidNestedHooksDispatcherOnUpdateInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; - } + if (typeof contextType === 'object' && contextType !== null) { + instance.context = readContext(contextType); + } else { + var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + instance.context = getMaskedContext(workInProgress, unmaskedContext); + } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnUpdateInDEV.useHostTransitionStatus = - useHostTransitionStatus; + { + if (instance.state === newProps) { + var componentName = getComponentNameFromType(ctor) || 'Component'; - InvalidNestedHooksDispatcherOnUpdateInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateActionState(action); - }; + if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) { + didWarnAboutDirectlyAssigningPropsToState.add(componentName); - InvalidNestedHooksDispatcherOnUpdateInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateActionState(action); - }; + error('%s: It is not recommended to assign props directly to state ' + "because updates to props won't be reflected in state. " + 'In most cases, it is better to use props directly.', componentName); } + } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnUpdateInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateOptimistic(passthrough, reducer); - }; - } + if (workInProgress.mode & StrictLegacyMode) { + ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, instance); + } - InvalidNestedHooksDispatcherOnRerenderInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + ReactStrictModeWarnings.recordUnsafeLifecycleWarnings(workInProgress, instance); + } - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + instance.state = workInProgress.memoizedState; + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - try { - return rerenderReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + instance.state = workInProgress.memoizedState; + } // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. - try { - return rerenderState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateId(); - } - }; - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; - } + if (typeof ctor.getDerivedStateFromProps !== 'function' && typeof instance.getSnapshotBeforeUpdate !== 'function' && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) { + callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's + // process them now. - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; - } + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + instance.state = workInProgress.memoizedState; + } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnRerenderInDEV.useHostTransitionStatus = - useHostTransitionStatus; + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } - InvalidNestedHooksDispatcherOnRerenderInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderActionState(action); - }; + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } +} - InvalidNestedHooksDispatcherOnRerenderInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderActionState(action); - }; +function resumeMountClassInstance(workInProgress, ctor, newProps, renderLanes) { + var instance = workInProgress.stateNode; + var unresolvedOldProps = workInProgress.memoizedProps; + var oldProps = resolveClassComponentProps(ctor, unresolvedOldProps, workInProgress.type === workInProgress.elementType); + instance.props = oldProps; + var oldContext = instance.context; + var contextType = ctor.contextType; + var nextContext = emptyContextObject; + + if (typeof contextType === 'object' && contextType !== null) { + nextContext = readContext(contextType); + } else { + var nextLegacyUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext); + } + + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; + var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // When comparing whether props changed, we should compare using the + // unresolved props object that is stored on the fiber, rather than the + // one that gets assigned to the instance, because that object may have been + // cloned to resolve default props and/or remove `ref`. + + var unresolvedNewProps = workInProgress.pendingProps; + var didReceiveNewProps = unresolvedNewProps !== unresolvedOldProps; // Note: During these life-cycles, instance.props/instance.state are what + // ever the previously attempted to render - not the "current". However, + // during componentDidUpdate we pass the "current" props. + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) { + if (didReceiveNewProps || oldContext !== nextContext) { + callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext); + } + } + + resetHasForceUpdateBeforeProcessing(); + var oldState = workInProgress.memoizedState; + var newState = instance.state = oldState; + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + newState = workInProgress.memoizedState; + + if (!didReceiveNewProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } + + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } + + return false; + } + + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + newState = workInProgress.memoizedState; + } + + var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext); + + if (shouldUpdate) { + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) { + if (typeof instance.componentWillMount === 'function') { + instance.componentWillMount(); } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnRerenderInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderOptimistic(passthrough, reducer); - }; + if (typeof instance.UNSAFE_componentWillMount === 'function') { + instance.UNSAFE_componentWillMount(); } } - var now = Scheduler.unstable_now; - var commitTime = 0; - var layoutEffectStartTime = -1; - var profilerStartTime = -1; - var passiveEffectStartTime = -1; - /** - * Tracks whether the current update was a nested/cascading update (scheduled from a layout effect). - * - * The overall sequence is: - * 1. render - * 2. commit (and call `onRender`, `onCommit`) - * 3. check for nested updates - * 4. flush passive effects (and call `onPostCommit`) - * - * Nested updates are identified in step 3 above, - * but step 4 still applies to the work that was just committed. - * We use two flags to track nested updates then: - * one tracks whether the upcoming update is a nested update, - * and the other tracks whether the current update was a nested update. - * The first value gets synced to the second at the start of the render phase. - */ - - var currentUpdateIsNested = false; - var nestedUpdateScheduled = false; + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } - function isCurrentUpdateNested() { - return currentUpdateIsNested; + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } + } else { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; } - function markNestedUpdateScheduled() { - { - nestedUpdateScheduled = true; - } + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } // If shouldComponentUpdate returned false, we should still update the + // memoized state to indicate that this work can be reused. + + + workInProgress.memoizedProps = newProps; + workInProgress.memoizedState = newState; + } // Update the existing instance's state, props, and context pointers even + // if shouldComponentUpdate returns false. + + + instance.props = newProps; + instance.state = newState; + instance.context = nextContext; + return shouldUpdate; +} // Invokes the update life-cycles and returns false if it shouldn't rerender. + + +function updateClassInstance(current, workInProgress, ctor, newProps, renderLanes) { + var instance = workInProgress.stateNode; + cloneUpdateQueue(current, workInProgress); + var unresolvedOldProps = workInProgress.memoizedProps; + var oldProps = resolveClassComponentProps(ctor, unresolvedOldProps, workInProgress.type === workInProgress.elementType); + instance.props = oldProps; + var unresolvedNewProps = workInProgress.pendingProps; + var oldContext = instance.context; + var contextType = ctor.contextType; + var nextContext = emptyContextObject; + + if (typeof contextType === 'object' && contextType !== null) { + nextContext = readContext(contextType); + } else { + var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + nextContext = getMaskedContext(workInProgress, nextUnmaskedContext); + } + + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; + var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // Note: During these life-cycles, instance.props/instance.state are what + // ever the previously attempted to render - not the "current". However, + // during componentDidUpdate we pass the "current" props. + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) { + if (unresolvedOldProps !== unresolvedNewProps || oldContext !== nextContext) { + callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext); } + } - function resetNestedUpdateFlag() { - { - currentUpdateIsNested = false; - nestedUpdateScheduled = false; + resetHasForceUpdateBeforeProcessing(); + var oldState = workInProgress.memoizedState; + var newState = instance.state = oldState; + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + newState = workInProgress.memoizedState; + + if (unresolvedOldProps === unresolvedNewProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing() && !(enableLazyContextPropagation )) { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Update; } } - function syncNestedUpdateFlag() { - { - currentUpdateIsNested = nestedUpdateScheduled; - nestedUpdateScheduled = false; + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Snapshot; } } - function getCommitTime() { - return commitTime; - } + return false; + } - function recordCommitTime() { - commitTime = now(); - } + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + newState = workInProgress.memoizedState; + } - function startProfilerTimer(fiber) { - profilerStartTime = now(); + var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) || // TODO: In some cases, we'll end up checking if context has changed twice, + // both before and after `shouldComponentUpdate` has been called. Not ideal, + // but I'm loath to refactor this function. This only happens for memoized + // components so it's not that common. + enableLazyContextPropagation ; - if (fiber.actualStartTime < 0) { - fiber.actualStartTime = now(); + if (shouldUpdate) { + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillUpdate === 'function' || typeof instance.componentWillUpdate === 'function')) { + if (typeof instance.componentWillUpdate === 'function') { + instance.componentWillUpdate(newProps, newState, nextContext); } - } - function stopProfilerTimerIfRunning(fiber) { - profilerStartTime = -1; + if (typeof instance.UNSAFE_componentWillUpdate === 'function') { + instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext); + } } - function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) { - if (profilerStartTime >= 0) { - var elapsedTime = now() - profilerStartTime; - fiber.actualDuration += elapsedTime; - - if (overrideBaseTime) { - fiber.selfBaseDuration = elapsedTime; - } + if (typeof instance.componentDidUpdate === 'function') { + workInProgress.flags |= Update; + } - profilerStartTime = -1; + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + workInProgress.flags |= Snapshot; + } + } else { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Update; } } - function recordLayoutEffectDuration(fiber) { - if (layoutEffectStartTime >= 0) { - var elapsedTime = now() - layoutEffectStartTime; - layoutEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor - // Or the root (for the DevTools Profiler to read) + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Snapshot; + } + } // If shouldComponentUpdate returned false, we should still update the + // memoized props/state to indicate that this work can be reused. - var parentFiber = fiber.return; - while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; - root.effectDuration += elapsedTime; - return; + workInProgress.memoizedProps = newProps; + workInProgress.memoizedState = newState; + } // Update the existing instance's state, props, and context pointers even + // if shouldComponentUpdate returns false. - case Profiler: - var parentStateNode = parentFiber.stateNode; - parentStateNode.effectDuration += elapsedTime; - return; - } - parentFiber = parentFiber.return; - } - } - } + instance.props = newProps; + instance.state = newState; + instance.context = nextContext; + return shouldUpdate; +} - function recordPassiveEffectDuration(fiber) { - if (passiveEffectStartTime >= 0) { - var elapsedTime = now() - passiveEffectStartTime; - passiveEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor - // Or the root (for the DevTools Profiler to read) +function resolveClassComponentProps(Component, baseProps, // Only resolve default props if this is a lazy component. Otherwise, they +// would have already been resolved by the JSX runtime. +// TODO: We're going to remove default prop resolution from the JSX runtime +// and keep it only for class components. As part of that change, we should +// remove this extra check. +alreadyResolvedDefaultProps) { + var newProps = baseProps; - var parentFiber = fiber.return; - while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; + var defaultProps = Component.defaultProps; - if (root !== null) { - root.passiveEffectDuration += elapsedTime; - } + if (defaultProps && ( // If disableDefaultPropsExceptForClasses is true, we always resolve + // default props here in the reconciler, rather than in the JSX runtime. + disableDefaultPropsExceptForClasses || !alreadyResolvedDefaultProps)) { + // We may have already copied the props object above to remove ref. If so, + // we can modify that. Otherwise, copy the props object with Object.assign. + if (newProps === baseProps) { + newProps = assign({}, newProps); + } // Taken from old JSX runtime, where this used to live. - return; - case Profiler: - var parentStateNode = parentFiber.stateNode; + for (var _propName in defaultProps) { + if (newProps[_propName] === undefined) { + newProps[_propName] = defaultProps[_propName]; + } + } + } - if (parentStateNode !== null) { - // Detached fibers have their state node cleared out. - // In this case, the return pointer is also cleared out, - // so we won't be able to report the time spent in this Profiler's subtree. - parentStateNode.passiveEffectDuration += elapsedTime; - } + return newProps; +} - return; - } +function resolveDefaultPropsOnNonClassComponent(Component, baseProps) { + if (disableDefaultPropsExceptForClasses) { + // Support for defaultProps is removed in React 19 for all types + // except classes. + return baseProps; + } - parentFiber = parentFiber.return; - } + if (Component && Component.defaultProps) { + // Resolve default props. Taken from ReactElement + var props = assign({}, baseProps); + var defaultProps = Component.defaultProps; + + for (var propName in defaultProps) { + if (props[propName] === undefined) { + props[propName] = defaultProps[propName]; } } - function startLayoutEffectTimer() { - layoutEffectStartTime = now(); - } + return props; + } + + return baseProps; +} - function startPassiveEffectTimer() { - passiveEffectStartTime = now(); +var reportGlobalError = typeof reportError === 'function' ? // In modern browsers, reportError will dispatch an error event, +// emulating an uncaught JavaScript error. +reportError : function (error) { + if (typeof window === 'object' && typeof window.ErrorEvent === 'function') { + // Browser Polyfill + var message = typeof error === 'object' && error !== null && typeof error.message === 'string' ? // eslint-disable-next-line react-internal/safe-string-coercion + String(error.message) : // eslint-disable-next-line react-internal/safe-string-coercion + String(error); + var event = new window.ErrorEvent('error', { + bubbles: true, + cancelable: true, + message: message, + error: error + }); + var shouldLog = window.dispatchEvent(event); + + if (!shouldLog) { + return; + } + } else if (typeof process === 'object' && // $FlowFixMe[method-unbinding] + typeof process.emit === 'function') { + // Node Polyfill + process.emit('uncaughtException', error); + return; + } // eslint-disable-next-line react-internal/no-production-logging + + + console['error'](error); +}; + +var componentName = null; +var errorBoundaryName = null; +function defaultOnUncaughtError(error, errorInfo) { + // Overriding this can silence these warnings e.g. for tests. + // See https://github.com/facebook/react/pull/13384 + // For uncaught root errors we report them as uncaught to the browser's + // onerror callback. This won't have component stacks and the error addendum. + // So we add those into a separate console.warn. + reportGlobalError(error); + + { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var componentNameMessage = componentName ? "An error occurred in the <" + componentName + "> component:" : 'An error occurred in one of your React components:'; + console['warn']('%s\n%s\n\n%s', componentNameMessage, componentStack || '', 'Consider adding an error boundary to your tree to customize error handling behavior.\n' + 'Visit https://react.dev/link/error-boundaries to learn more about error boundaries.'); + } +} +function defaultOnCaughtError(error, errorInfo) { + // Overriding this can silence these warnings e.g. for tests. + // See https://github.com/facebook/react/pull/13384 + // Caught by error boundary + { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var componentNameMessage = componentName ? "The above error occurred in the <" + componentName + "> component:" : 'The above error occurred in one of your React components:'; // In development, we provide our own message which includes the component stack + // in addition to the error. + // Don't transform to our wrapper + + console['error']('%o\n\n%s\n%s\n\n%s', error, componentNameMessage, componentStack, "React will try to recreate this component tree from scratch " + ("using the error boundary you provided, " + (errorBoundaryName || 'Anonymous') + ".")); + } +} +function defaultOnRecoverableError(error, errorInfo) { + reportGlobalError(error); +} +function logUncaughtError(root, errorInfo) { + try { + if (true) { + componentName = errorInfo.source ? getComponentNameFromFiber(errorInfo.source) : null; + errorBoundaryName = null; } - function transferActualDuration(fiber) { - // Transfer time spent rendering these children so we don't lose it - // after we rerender. This is used as a helper in special cases - // where we should count the work of multiple passes. - var child = fiber.child; + var error = errorInfo.value; - while (child) { - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - fiber.actualDuration += child.actualDuration; - child = child.sibling; - } + if (true && ReactSharedInternals.actQueue !== null) { + // For uncaught errors inside act, we track them on the act and then + // rethrow them into the test. + ReactSharedInternals.thrownErrors.push(error); + return; } - var fakeInternalInstance = {}; - var didWarnAboutStateAssignmentForComponent; - var didWarnAboutUninitializedState; - var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate; - var didWarnAboutLegacyLifecyclesAndDerivedState; - var didWarnAboutUndefinedDerivedState; - var didWarnAboutDirectlyAssigningPropsToState; - var didWarnAboutContextTypeAndContextTypes; - var didWarnAboutInvalidateContextType; - var didWarnOnInvalidCallback; + var onUncaughtError = root.onUncaughtError; + onUncaughtError(error, { + componentStack: errorInfo.stack + }); + } catch (e) { + // This method must not throw, or React internal state will get messed up. + // If console.error is overridden, or logCapturedError() shows a dialog that throws, + // we want to report this error outside of the normal stack as a last resort. + // https://github.com/facebook/react/issues/13188 + setTimeout(function () { + throw e; + }); + } +} +function logCaughtError(root, boundary, errorInfo) { + try { + if (true) { + componentName = errorInfo.source ? getComponentNameFromFiber(errorInfo.source) : null; + errorBoundaryName = getComponentNameFromFiber(boundary); + } + + var error = errorInfo.value; + var onCaughtError = root.onCaughtError; + onCaughtError(error, { + componentStack: errorInfo.stack, + errorBoundary: boundary.tag === ClassComponent ? boundary.stateNode // This should always be the case as long as we only have class boundaries + : null + }); + } catch (e) { + // This method must not throw, or React internal state will get messed up. + // If console.error is overridden, or logCapturedError() shows a dialog that throws, + // we want to report this error outside of the normal stack as a last resort. + // https://github.com/facebook/react/issues/13188 + setTimeout(function () { + throw e; + }); + } +} - { - didWarnAboutStateAssignmentForComponent = new Set(); - didWarnAboutUninitializedState = new Set(); - didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set(); - didWarnAboutLegacyLifecyclesAndDerivedState = new Set(); - didWarnAboutDirectlyAssigningPropsToState = new Set(); - didWarnAboutUndefinedDerivedState = new Set(); - didWarnAboutContextTypeAndContextTypes = new Set(); - didWarnAboutInvalidateContextType = new Set(); - didWarnOnInvalidCallback = new Set(); // This is so gross but it's at least non-critical and can be removed if - // it causes problems. This is meant to give a nicer error message for - // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component, - // ...)) which otherwise throws a "_processChildContext is not a function" - // exception. - - Object.defineProperty(fakeInternalInstance, "_processChildContext", { - enumerable: false, - value: function () { - throw new Error( - "_processChildContext is not available in React 16+. This likely " + - "means you have multiple copies of React and are attempting to nest " + - "a React 15 tree inside a React 16 tree using " + - "unstable_renderSubtreeIntoContainer, which isn't supported. Try " + - "to make sure you have only one copy of React (and ideally, switch " + - "to ReactDOM.createPortal)." - ); - } - }); - Object.freeze(fakeInternalInstance); - } +function createRootErrorUpdate(root, errorInfo, lane) { + var update = createUpdate(lane); // Unmount the root by rendering null. - function warnOnInvalidCallback(callback) { - { - if (callback === null || typeof callback === "function") { - return; - } // eslint-disable-next-line react-internal/safe-string-coercion + update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property + // being called "element". - var key = String(callback); + update.payload = { + element: null + }; - if (!didWarnOnInvalidCallback.has(key)) { - didWarnOnInvalidCallback.add(key); + update.callback = function () { + logUncaughtError(root, errorInfo); + }; - error( - "Expected the last optional `callback` argument to be a " + - "function. Instead received: %s.", - callback - ); - } + return update; +} + +function createClassErrorUpdate(lane) { + var update = createUpdate(lane); + update.tag = CaptureUpdate; + return update; +} + +function initializeClassErrorUpdate(update, root, fiber, errorInfo) { + var getDerivedStateFromError = fiber.type.getDerivedStateFromError; + + if (typeof getDerivedStateFromError === 'function') { + var error$1 = errorInfo.value; + + update.payload = function () { + return getDerivedStateFromError(error$1); + }; + + update.callback = function () { + { + markFailedErrorBoundaryForHotReloading(fiber); } - } - function warnOnUndefinedDerivedState(type, partialState) { + logCaughtError(root, fiber, errorInfo); + }; + } + + var inst = fiber.stateNode; + + if (inst !== null && typeof inst.componentDidCatch === 'function') { + // $FlowFixMe[missing-this-annot] + update.callback = function callback() { { - if (partialState === undefined) { - var componentName = getComponentNameFromType(type) || "Component"; + markFailedErrorBoundaryForHotReloading(fiber); + } - if (!didWarnAboutUndefinedDerivedState.has(componentName)) { - didWarnAboutUndefinedDerivedState.add(componentName); + logCaughtError(root, fiber, errorInfo); - error( - "%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. " + - "You have returned undefined.", - componentName - ); - } - } + if (typeof getDerivedStateFromError !== 'function') { + // To preserve the preexisting retry behavior of error boundaries, + // we keep track of which ones already failed during this batch. + // This gets reset before we yield back to the browser. + // TODO: Warn in strict mode if getDerivedStateFromError is + // not defined. + markLegacyErrorBoundaryAsFailed(this); } - } - function applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - nextProps - ) { - var prevState = workInProgress.memoizedState; - var partialState = getDerivedStateFromProps(nextProps, prevState); + var error$1 = errorInfo.value; + var stack = errorInfo.stack; + this.componentDidCatch(error$1, { + componentStack: stack !== null ? stack : '' + }); { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); - - try { - // Invoke the function an extra time to help detect side-effects. - partialState = getDerivedStateFromProps(nextProps, prevState); - } finally { - setIsStrictModeForDevtools(false); + if (typeof getDerivedStateFromError !== 'function') { + // If componentDidCatch is the only error boundary method defined, + // then it needs to call setState to recover from errors. + // If no state update is scheduled then the boundary will swallow the error. + if (!includesSomeLane(fiber.lanes, SyncLane)) { + error('%s: Error boundaries should implement getDerivedStateFromError(). ' + 'In that method, return a state update to display an error message or fallback UI.', getComponentNameFromFiber(fiber) || 'Unknown'); } } + } + }; + } +} - warnOnUndefinedDerivedState(ctor, partialState); - } // Merge the partial state and the previous state. +function resetSuspendedComponent(sourceFiber, rootRenderLanes) { + // A legacy mode Suspense quirk, only relevant to hook components. - var memoizedState = - partialState === null || partialState === undefined - ? prevState - : assign({}, prevState, partialState); - workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the - // base state. - if (workInProgress.lanes === NoLanes) { - // Queue is always non-null for classes - var updateQueue = workInProgress.updateQueue; - updateQueue.baseState = memoizedState; - } + var tag = sourceFiber.tag; + + if ((sourceFiber.mode & ConcurrentMode) === NoMode && (tag === FunctionComponent || tag === ForwardRef || tag === SimpleMemoComponent)) { + var currentSource = sourceFiber.alternate; + + if (currentSource) { + sourceFiber.updateQueue = currentSource.updateQueue; + sourceFiber.memoizedState = currentSource.memoizedState; + sourceFiber.lanes = currentSource.lanes; + } else { + sourceFiber.updateQueue = null; + sourceFiber.memoizedState = null; } + } +} - var classComponentUpdater = { - isMounted: isMounted, - // $FlowFixMe[missing-local-annot] - enqueueSetState: function (inst, payload, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.payload = payload; +function markSuspenseBoundaryShouldCapture(suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes) { + // This marks a Suspense boundary so that when we're unwinding the stack, + // it captures the suspended "exception" and does a second (fallback) pass. + if ((suspenseBoundary.mode & ConcurrentMode) === NoMode) { + // Legacy Mode Suspense + // + // If the boundary is in legacy mode, we should *not* + // suspend the commit. Pretend as if the suspended component rendered + // null and keep rendering. When the Suspense boundary completes, + // we'll do a second pass to render the fallback. + if (suspenseBoundary === returnFiber) { + // Special case where we suspended while reconciling the children of + // a Suspense boundary's inner Offscreen wrapper fiber. This happens + // when a React.lazy component is a direct child of a + // Suspense boundary. + // + // Suspense boundaries are implemented as multiple fibers, but they + // are a single conceptual unit. The legacy mode behavior where we + // pretend the suspended fiber committed as `null` won't work, + // because in this case the "suspended" fiber is the inner + // Offscreen wrapper. + // + // Because the contents of the boundary haven't started rendering + // yet (i.e. nothing in the tree has partially rendered) we can + // switch to the regular, concurrent mode behavior: mark the + // boundary with ShouldCapture and enter the unwind phase. + suspenseBoundary.flags |= ShouldCapture; + } else { + suspenseBoundary.flags |= DidCapture; + sourceFiber.flags |= ForceUpdateForLegacySuspense; // We're going to commit this fiber even though it didn't complete. + // But we shouldn't call any lifecycle methods or callbacks. Remove + // all lifecycle effect tags. + + sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete); + + if (sourceFiber.tag === ClassComponent) { + var currentSourceFiber = sourceFiber.alternate; + + if (currentSourceFiber === null) { + // This is a new mount. Change the tag so it's not mistaken for a + // completed class component. For example, we should not call + // componentWillUnmount if it is deleted. + sourceFiber.tag = IncompleteClassComponent; + } else { + // When we try rendering again, we should not reuse the current fiber, + // since it's known to be in an inconsistent state. Use a force update to + // prevent a bail out. + var update = createUpdate(SyncLane); + update.tag = ForceUpdate; + enqueueUpdate(sourceFiber, update, SyncLane); + } + } else if (sourceFiber.tag === FunctionComponent) { + var _currentSourceFiber = sourceFiber.alternate; + + if (_currentSourceFiber === null) { + // This is a new mount. Change the tag so it's not mistaken for a + // completed function component. + sourceFiber.tag = IncompleteFunctionComponent; + } + } // The source fiber did not complete. Mark it with Sync priority to + // indicate that it still has pending work. + + + sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); + } + + return suspenseBoundary; + } // Confirmed that the boundary is in a concurrent mode tree. Continue + // with the normal suspend path. + // + // After this we'll use a set of heuristics to determine whether this + // render pass will run to completion or restart or "suspend" the commit. + // The actual logic for this is spread out in different places. + // + // This first principle is that if we're going to suspend when we complete + // a root, then we should also restart if we get an update or ping that + // might unsuspend it, and vice versa. The only reason to suspend is + // because you think you might want to restart before committing. However, + // it doesn't make sense to restart only while in the period we're suspended. + // + // Restarting too aggressively is also not good because it starves out any + // intermediate loading state. So we use heuristics to determine when. + // Suspense Heuristics + // + // If nothing threw a Promise or all the same fallbacks are already showing, + // then don't suspend/restart. + // + // If this is an initial render of a new tree of Suspense boundaries and + // those trigger a fallback, then don't suspend/restart. We want to ensure + // that we can show the initial loading state as quickly as possible. + // + // If we hit a "Delayed" case, such as when we'd switch from content back into + // a fallback, then we should always suspend/restart. Transitions apply + // to this case. If none is defined, JND is used instead. + // + // If we're already showing a fallback and it gets "retried", allowing us to show + // another level, but there's still an inner boundary that would show a fallback, + // then we suspend/restart for 500ms since the last time we showed a fallback + // anywhere in the tree. This effectively throttles progressive loading into a + // consistent train of commits. This also gives us an opportunity to restart to + // get to the completed state slightly earlier. + // + // If there's ambiguity due to batching it's resolved in preference of: + // 1) "delayed", 2) "initial render", 3) "retry". + // + // We want to ensure that a "busy" state doesn't get force committed. We want to + // ensure that new initial loading states can commit as soon as possible. + + + suspenseBoundary.flags |= ShouldCapture; // TODO: I think we can remove this, since we now use `DidCapture` in + // the begin phase to prevent an early bailout. + + suspenseBoundary.lanes = rootRenderLanes; + return suspenseBoundary; +} - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } +function throwException(root, returnFiber, sourceFiber, value, rootRenderLanes) { + // The source fiber did not complete. + sourceFiber.flags |= Incomplete; - update.callback = callback; - } + { + if (isDevToolsPresent) { + // If we have pending work still, restore the original updaters + restorePendingUpdaters(root, rootRenderLanes); + } + } - var root = enqueueUpdate(fiber, update, lane); + if (value !== null && typeof value === 'object') { - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } + if (typeof value.then === 'function') { + // This is a wakeable. The component suspended. + var wakeable = value; + resetSuspendedComponent(sourceFiber); - { - markStateUpdateScheduled(fiber, lane); - } - }, - enqueueReplaceState: function (inst, payload, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.tag = ReplaceState; - update.payload = payload; - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } + var suspenseBoundary = getSuspenseHandler(); + + if (suspenseBoundary !== null) { + switch (suspenseBoundary.tag) { + case SuspenseComponent: + { + // If this suspense boundary is not already showing a fallback, mark + // the in-progress render as suspended. We try to perform this logic + // as soon as soon as possible during the render phase, so the work + // loop can know things like whether it's OK to switch to other tasks, + // or whether it can wait for data to resolve before continuing. + // TODO: Most of these checks are already performed when entering a + // Suspense boundary. We should track the information on the stack so + // we don't have to recompute it on demand. This would also allow us + // to unify with `use` which needs to perform this logic even sooner, + // before `throwException` is called. + if (sourceFiber.mode & ConcurrentMode) { + if (getShellBoundary() === null) { + // Suspended in the "shell" of the app. This is an undesirable + // loading state. We should avoid committing this tree. + renderDidSuspendDelayIfPossible(); + } else { + // If we suspended deeper than the shell, we don't need to delay + // the commmit. However, we still call renderDidSuspend if this is + // a new boundary, to tell the work loop that a new fallback has + // appeared during this render. + // TODO: Theoretically we should be able to delete this branch. + // It's currently used for two things: 1) to throttle the + // appearance of successive loading states, and 2) in + // SuspenseList, to determine whether the children include any + // pending fallbacks. For 1, we should apply throttling to all + // retries, not just ones that render an additional fallback. For + // 2, we should check subtreeFlags instead. Then we can delete + // this branch. + var current = suspenseBoundary.alternate; + + if (current === null) { + renderDidSuspend(); + } + } + } + + suspenseBoundary.flags &= ~ForceClientRender; + markSuspenseBoundaryShouldCapture(suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes); // Retry listener + // + // If the fallback does commit, we need to attach a different type of + // listener. This one schedules an update on the Suspense boundary to + // turn the fallback state off. + // + // Stash the wakeable on the boundary fiber so we can access it in the + // commit phase. + // + // When the wakeable resolves, we'll attempt to render the boundary + // again ("retry"). + // Check if this is a Suspensey resource. We do not attach retry + // listeners to these, because we don't actually need them for + // rendering. Only for committing. Instead, if a fallback commits + // and the only thing that suspended was a Suspensey resource, we + // retry immediately. + // TODO: Refactor throwException so that we don't have to do this type + // check. The caller already knows what the cause was. + + var isSuspenseyResource = wakeable === noopSuspenseyCommitThenable; + + if (isSuspenseyResource) { + suspenseBoundary.flags |= ScheduleRetry; + } else { + var retryQueue = suspenseBoundary.updateQueue; + + if (retryQueue === null) { + suspenseBoundary.updateQueue = new Set([wakeable]); + } else { + retryQueue.add(wakeable); + } // We only attach ping listeners in concurrent mode. Legacy + // Suspense always commits fallbacks synchronously, so there are + // no pings. + - update.callback = callback; - } + if (suspenseBoundary.mode & ConcurrentMode) { + attachPingListener(root, wakeable, rootRenderLanes); + } + } - var root = enqueueUpdate(fiber, update, lane); + return false; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } + case OffscreenComponent: + { + if (suspenseBoundary.mode & ConcurrentMode) { + suspenseBoundary.flags |= ShouldCapture; - { - markStateUpdateScheduled(fiber, lane); - } - }, - // $FlowFixMe[missing-local-annot] - enqueueForceUpdate: function (inst, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.tag = ForceUpdate; + var _isSuspenseyResource = wakeable === noopSuspenseyCommitThenable; - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } + if (_isSuspenseyResource) { + suspenseBoundary.flags |= ScheduleRetry; + } else { + var offscreenQueue = suspenseBoundary.updateQueue; + + if (offscreenQueue === null) { + var newOffscreenQueue = { + transitions: null, + markerInstances: null, + retryQueue: new Set([wakeable]) + }; + suspenseBoundary.updateQueue = newOffscreenQueue; + } else { + var _retryQueue = offscreenQueue.retryQueue; - update.callback = callback; - } + if (_retryQueue === null) { + offscreenQueue.retryQueue = new Set([wakeable]); + } else { + _retryQueue.add(wakeable); + } + } - var root = enqueueUpdate(fiber, update, lane); + attachPingListener(root, wakeable, rootRenderLanes); + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); + return false; + } + } } - { - markForceUpdateScheduled(fiber, lane); + throw new Error("Unexpected Suspense handler tag (" + suspenseBoundary.tag + "). This " + 'is a bug in React.'); + } else { + // No boundary was found. Unless this is a sync update, this is OK. + // We can suspend and wait for more data to arrive. + if (root.tag === ConcurrentRoot) { + // In a concurrent root, suspending without a Suspense boundary is + // allowed. It will suspend indefinitely without committing. + // + // TODO: Should we have different behavior for discrete updates? What + // about flushSync? Maybe it should put the tree into an inert state, + // and potentially log a warning. Revisit this for a future release. + attachPingListener(root, wakeable, rootRenderLanes); + renderDidSuspendDelayIfPossible(); + return false; + } else { + // In a legacy root, suspending without a boundary is always an error. + var uncaughtSuspenseError = new Error('A component suspended while responding to synchronous input. This ' + 'will cause the UI to be replaced with a loading indicator. To ' + 'fix, updates that suspend should be wrapped ' + 'with startTransition.'); + value = uncaughtSuspenseError; } } - }; - - function checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ) { - var instance = workInProgress.stateNode; - - if (typeof instance.shouldComponentUpdate === "function") { - var shouldUpdate = instance.shouldComponentUpdate( - newProps, - newState, - nextContext - ); - - { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); + } + } // This is a regular error, not a Suspense wakeable. - try { - // Invoke the function an extra time to help detect side-effects. - shouldUpdate = instance.shouldComponentUpdate( - newProps, - newState, - nextContext - ); - } finally { - setIsStrictModeForDevtools(false); - } - } + var wrapperError = new Error('There was an error during concurrent rendering but React was able to recover by ' + 'instead synchronously rendering the entire root.', { + cause: value + }); + queueConcurrentError(createCapturedValueAtFiber(wrapperError, sourceFiber)); + renderDidError(); // We didn't find a boundary that could handle this type of exception. Start + // over and traverse parent path again, this time treating the exception + // as an error. - if (shouldUpdate === undefined) { - error( - "%s.shouldComponentUpdate(): Returned undefined instead of a " + - "boolean value. Make sure to return true or false.", - getComponentNameFromType(ctor) || "Component" - ); - } - } + if (returnFiber === null) { + // There's no return fiber, which means the root errored. This should never + // happen. Return `true` to trigger a fatal error (panic). + return true; + } - return shouldUpdate; - } + var errorInfo = createCapturedValueAtFiber(value, sourceFiber); + var workInProgress = returnFiber; - if (ctor.prototype && ctor.prototype.isPureReactComponent) { - return ( - !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState) - ); - } + do { + switch (workInProgress.tag) { + case HostRoot: + { + workInProgress.flags |= ShouldCapture; - return true; - } + var _lane = pickArbitraryLane(rootRenderLanes); - function checkClassInstance(workInProgress, ctor, newProps) { - var instance = workInProgress.stateNode; + workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane); - { - var name = getComponentNameFromType(ctor) || "Component"; - var renderPresent = instance.render; - - if (!renderPresent) { - if (ctor.prototype && typeof ctor.prototype.render === "function") { - error( - "No `render` method found on the %s " + - "instance: did you accidentally return an object from the constructor?", - name - ); - } else { - error( - "No `render` method found on the %s " + - "instance: you may have forgotten to define `render`.", - name - ); - } - } + var _update = createRootErrorUpdate(workInProgress.stateNode, errorInfo, _lane); - if ( - instance.getInitialState && - !instance.getInitialState.isReactClassApproved && - !instance.state - ) { - error( - "getInitialState was defined on %s, a plain JavaScript class. " + - "This is only supported for classes created using React.createClass. " + - "Did you mean to define a state property instead?", - name - ); + enqueueCapturedUpdate(workInProgress, _update); + return false; } - if ( - instance.getDefaultProps && - !instance.getDefaultProps.isReactClassApproved - ) { - error( - "getDefaultProps was defined on %s, a plain JavaScript class. " + - "This is only supported for classes created using React.createClass. " + - "Use a static property to define defaultProps instead.", - name - ); - } + case ClassComponent: + // Capture and retry + var ctor = workInProgress.type; + var instance = workInProgress.stateNode; - if (instance.propTypes) { - error( - "propTypes was defined as an instance property on %s. Use a static " + - "property to define propTypes instead.", - name - ); - } + if ((workInProgress.flags & DidCapture) === NoFlags$1 && (typeof ctor.getDerivedStateFromError === 'function' || instance !== null && typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance))) { + workInProgress.flags |= ShouldCapture; - if (instance.contextType) { - error( - "contextType was defined as an instance property on %s. Use a static " + - "property to define contextType instead.", - name - ); - } + var _lane2 = pickArbitraryLane(rootRenderLanes); - { - if (instance.contextTypes) { - error( - "contextTypes was defined as an instance property on %s. Use a static " + - "property to define contextTypes instead.", - name - ); - } + workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane2); // Schedule the error boundary to re-render using updated state - if ( - ctor.contextType && - ctor.contextTypes && - !didWarnAboutContextTypeAndContextTypes.has(ctor) - ) { - didWarnAboutContextTypeAndContextTypes.add(ctor); - - error( - "%s declares both contextTypes and contextType static properties. " + - "The legacy contextTypes property will be ignored.", - name - ); - } - } + var _update2 = createClassErrorUpdate(_lane2); - if (typeof instance.componentShouldUpdate === "function") { - error( - "%s has a method called " + - "componentShouldUpdate(). Did you mean shouldComponentUpdate()? " + - "The name is phrased as a question because the function is " + - "expected to return a value.", - name - ); - } - - if ( - ctor.prototype && - ctor.prototype.isPureReactComponent && - typeof instance.shouldComponentUpdate !== "undefined" - ) { - error( - "%s has a method called shouldComponentUpdate(). " + - "shouldComponentUpdate should not be used when extending React.PureComponent. " + - "Please extend React.Component if shouldComponentUpdate is used.", - getComponentNameFromType(ctor) || "A pure component" - ); + initializeClassErrorUpdate(_update2, root, workInProgress, errorInfo); + enqueueCapturedUpdate(workInProgress, _update2); + return false; } - if (typeof instance.componentDidUnmount === "function") { - error( - "%s has a method called " + - "componentDidUnmount(). But there is no such lifecycle method. " + - "Did you mean componentWillUnmount()?", - name - ); - } - - if (typeof instance.componentDidReceiveProps === "function") { - error( - "%s has a method called " + - "componentDidReceiveProps(). But there is no such lifecycle method. " + - "If you meant to update the state in response to changing props, " + - "use componentWillReceiveProps(). If you meant to fetch data or " + - "run side-effects or mutations after React has updated the UI, use componentDidUpdate().", - name - ); - } + break; + } // $FlowFixMe[incompatible-type] we bail out when we get a null - if (typeof instance.componentWillRecieveProps === "function") { - error( - "%s has a method called " + - "componentWillRecieveProps(). Did you mean componentWillReceiveProps()?", - name - ); - } - if (typeof instance.UNSAFE_componentWillRecieveProps === "function") { - error( - "%s has a method called " + - "UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?", - name - ); - } + workInProgress = workInProgress.return; + } while (workInProgress !== null); - var hasMutatedProps = instance.props !== newProps; + return false; +} - if (instance.props !== undefined && hasMutatedProps) { - error( - "When calling super() in `%s`, make sure to pass " + - "up the same props that your component's constructor was passed.", - name - ); - } +// into a dehydrated boundary. + +var SelectiveHydrationException = new Error("This is not a real error. It's an implementation detail of React's " + "selective hydration feature. If this leaks into userspace, it's a bug in " + 'React. Please file an issue.'); +var didReceiveUpdate = false; +var didWarnAboutBadClass; +var didWarnAboutContextTypeOnFunctionComponent; +var didWarnAboutGetDerivedStateOnFunctionComponent; +var didWarnAboutFunctionRefs; +var didWarnAboutReassigningProps; +var didWarnAboutRevealOrder; +var didWarnAboutTailOptions; +var didWarnAboutDefaultPropsOnFunctionComponent; + +{ + didWarnAboutBadClass = {}; + didWarnAboutContextTypeOnFunctionComponent = {}; + didWarnAboutGetDerivedStateOnFunctionComponent = {}; + didWarnAboutFunctionRefs = {}; + didWarnAboutReassigningProps = false; + didWarnAboutRevealOrder = {}; + didWarnAboutTailOptions = {}; + didWarnAboutDefaultPropsOnFunctionComponent = {}; +} - if (instance.defaultProps) { - error( - "Setting defaultProps as an instance property on %s is not supported and will be ignored." + - " Instead, define defaultProps as a static property on %s.", - name, - name - ); - } +function reconcileChildren(current, workInProgress, nextChildren, renderLanes) { + if (current === null) { + // If this is a fresh new component that hasn't been rendered yet, we + // won't update its child set by applying minimal side-effects. Instead, + // we will add them all to the child before it gets rendered. That means + // we can optimize this reconciliation pass by not tracking side-effects. + workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderLanes); + } else { + // If the current child is the same as the work in progress, it means that + // we haven't yet started any work on these children. Therefore, we use + // the clone algorithm to create a copy of all the current children. + // If we had any progressed work already, that is invalid at this point so + // let's throw it out. + workInProgress.child = reconcileChildFibers(workInProgress, current.child, nextChildren, renderLanes); + } +} - if ( - typeof instance.getSnapshotBeforeUpdate === "function" && - typeof instance.componentDidUpdate !== "function" && - !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor) - ) { - didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor); +function forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderLanes) { + // This function is fork of reconcileChildren. It's used in cases where we + // want to reconcile without matching against the existing set. This has the + // effect of all current children being unmounted; even if the type and key + // are the same, the old child is unmounted and a new child is created. + // + // To do this, we're going to go through the reconcile algorithm twice. In + // the first pass, we schedule a deletion for all the current children by + // passing null. + workInProgress.child = reconcileChildFibers(workInProgress, current.child, null, renderLanes); // In the second pass, we mount the new children. The trick here is that we + // pass null in place of where we usually pass the current child set. This has + // the effect of remounting all children regardless of whether their + // identities match. + + workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderLanes); +} - error( - "%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). " + - "This component defines getSnapshotBeforeUpdate() only.", - getComponentNameFromType(ctor) - ); - } +function updateForwardRef(current, workInProgress, Component, nextProps, renderLanes) { + // TODO: current can be non-null here even if the component + // hasn't yet mounted. This happens after the first render suspends. + // We'll need to figure out if this is fine or can cause issues. + var render = Component.render; + var ref = workInProgress.ref; + var propsWithoutRef; - if (typeof instance.getDerivedStateFromProps === "function") { - error( - "%s: getDerivedStateFromProps() is defined as an instance method " + - "and will be ignored. Instead, declare it as a static method.", - name - ); - } + { + propsWithoutRef = nextProps; + } // The rest is a fork of updateFunctionComponent - if (typeof instance.getDerivedStateFromError === "function") { - error( - "%s: getDerivedStateFromError() is defined as an instance method " + - "and will be ignored. Instead, declare it as a static method.", - name - ); - } - if (typeof ctor.getSnapshotBeforeUpdate === "function") { - error( - "%s: getSnapshotBeforeUpdate() is defined as a static method " + - "and will be ignored. Instead, declare it as an instance method.", - name - ); - } + var nextChildren; + prepareToReadContext(workInProgress, renderLanes); - var state = instance.state; + { + markComponentRenderStarted(workInProgress); + } - if (state && (typeof state !== "object" || isArray(state))) { - error("%s.state: must be set to an object or null", name); - } + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + nextChildren = renderWithHooks(current, workInProgress, render, propsWithoutRef, ref, renderLanes); + setIsRendering(false); + } - if ( - typeof instance.getChildContext === "function" && - typeof ctor.childContextTypes !== "object" - ) { - error( - "%s.getChildContext(): childContextTypes must be defined in order to " + - "use getChildContext().", - name - ); - } - } - } + { + markComponentRenderStopped(); + } - function constructClassInstance(workInProgress, ctor, props) { - var isLegacyContextConsumer = false; - var unmaskedContext = emptyContextObject; - var context = emptyContextObject; - var contextType = ctor.contextType; + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - { - if ("contextType" in ctor) { - var isValid = // Allow null for conditional declaration - contextType === null || - (contextType !== undefined && - contextType.$$typeof === REACT_CONTEXT_TYPE); - - if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) { - didWarnAboutInvalidateContextType.add(ctor); - var addendum = ""; - - if (contextType === undefined) { - addendum = - " However, it is set to undefined. " + - "This can be caused by a typo or by mixing up named and default imports. " + - "This can also happen due to a circular dependency, so " + - "try moving the createContext() call to a separate file."; - } else if (typeof contextType !== "object") { - addendum = " However, it is set to a " + typeof contextType + "."; - } else if (contextType.$$typeof === REACT_CONSUMER_TYPE) { - addendum = - " Did you accidentally pass the Context.Consumer instead?"; - } else { - addendum = - " However, it is set to an object with keys {" + - Object.keys(contextType).join(", ") + - "}."; - } - error( - "%s defines an invalid contextType. " + - "contextType should point to the Context object returned by React.createContext().%s", - getComponentNameFromType(ctor) || "Component", - addendum - ); - } - } - } + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (typeof contextType === "object" && contextType !== null) { - context = readContext(contextType); - } else { - unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); - var contextTypes = ctor.contextTypes; - isLegacyContextConsumer = - contextTypes !== null && contextTypes !== undefined; - context = isLegacyContextConsumer - ? getMaskedContext(workInProgress, unmaskedContext) - : emptyContextObject; - } +function updateMemoComponent(current, workInProgress, Component, nextProps, renderLanes) { + if (current === null) { + var type = Component.type; - var instance = new ctor(props, context); // Instantiate twice to help detect side-effects. + if (isSimpleFunctionComponent(type) && Component.compare === null && ( // SimpleMemoComponent codepath doesn't resolve outer props either. + disableDefaultPropsExceptForClasses || Component.defaultProps === undefined)) { + var resolvedType = type; { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); - - try { - instance = new ctor(props, context); // eslint-disable-line no-new - } finally { - setIsStrictModeForDevtools(false); - } - } - } + resolvedType = resolveFunctionForHotReloading(type); + } // If this is a plain function component without default props, + // and with only the default shallow comparison, we upgrade it + // to a SimpleMemoComponent to allow fast path updates. - var state = (workInProgress.memoizedState = - instance.state !== null && instance.state !== undefined - ? instance.state - : null); - instance.updater = classComponentUpdater; - workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates - set(instance, workInProgress); + workInProgress.tag = SimpleMemoComponent; + workInProgress.type = resolvedType; { - instance._reactInternalInstance = fakeInternalInstance; + validateFunctionComponentInDev(workInProgress, type); } - { - if ( - typeof ctor.getDerivedStateFromProps === "function" && - state === null - ) { - var componentName = getComponentNameFromType(ctor) || "Component"; - - if (!didWarnAboutUninitializedState.has(componentName)) { - didWarnAboutUninitializedState.add(componentName); - - error( - "`%s` uses `getDerivedStateFromProps` but its initial state is " + - "%s. This is not recommended. Instead, define the initial state by " + - "assigning an object to `this.state` in the constructor of `%s`. " + - "This ensures that `getDerivedStateFromProps` arguments have a consistent shape.", - componentName, - instance.state === null ? "null" : "undefined", - componentName - ); - } - } // If new component APIs are defined, "unsafe" lifecycles won't be called. - // Warn about these lifecycles if they are present. - // Don't warn about react-lifecycles-compat polyfilled methods though. - - if ( - typeof ctor.getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function" - ) { - var foundWillMountName = null; - var foundWillReceivePropsName = null; - var foundWillUpdateName = null; - - if ( - typeof instance.componentWillMount === "function" && - instance.componentWillMount.__suppressDeprecationWarning !== true - ) { - foundWillMountName = "componentWillMount"; - } else if (typeof instance.UNSAFE_componentWillMount === "function") { - foundWillMountName = "UNSAFE_componentWillMount"; - } + return updateSimpleMemoComponent(current, workInProgress, resolvedType, nextProps, renderLanes); + } - if ( - typeof instance.componentWillReceiveProps === "function" && - instance.componentWillReceiveProps.__suppressDeprecationWarning !== - true - ) { - foundWillReceivePropsName = "componentWillReceiveProps"; - } else if ( - typeof instance.UNSAFE_componentWillReceiveProps === "function" - ) { - foundWillReceivePropsName = "UNSAFE_componentWillReceiveProps"; - } + if (!disableDefaultPropsExceptForClasses) { + { + if (Component.defaultProps !== undefined) { + var componentName = getComponentNameFromType(type) || 'Unknown'; - if ( - typeof instance.componentWillUpdate === "function" && - instance.componentWillUpdate.__suppressDeprecationWarning !== true - ) { - foundWillUpdateName = "componentWillUpdate"; - } else if ( - typeof instance.UNSAFE_componentWillUpdate === "function" - ) { - foundWillUpdateName = "UNSAFE_componentWillUpdate"; - } + if (!didWarnAboutDefaultPropsOnFunctionComponent[componentName]) { + error('%s: Support for defaultProps will be removed from memo components ' + 'in a future major release. Use JavaScript default parameters instead.', componentName); - if ( - foundWillMountName !== null || - foundWillReceivePropsName !== null || - foundWillUpdateName !== null - ) { - var _componentName = getComponentNameFromType(ctor) || "Component"; - - var newApiName = - typeof ctor.getDerivedStateFromProps === "function" - ? "getDerivedStateFromProps()" - : "getSnapshotBeforeUpdate()"; - - if ( - !didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName) - ) { - didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName); - - error( - "Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n" + - "%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n" + - "The above lifecycles should be removed. Learn more about this warning here:\n" + - "https://react.dev/link/unsafe-component-lifecycles", - _componentName, - newApiName, - foundWillMountName !== null ? "\n " + foundWillMountName : "", - foundWillReceivePropsName !== null - ? "\n " + foundWillReceivePropsName - : "", - foundWillUpdateName !== null ? "\n " + foundWillUpdateName : "" - ); - } + didWarnAboutDefaultPropsOnFunctionComponent[componentName] = true; } } - } // Cache unmasked context so we can avoid recreating masked context unless necessary. - // ReactFiberContext usually updates this cache but can't for newly-created instances. - - if (isLegacyContextConsumer) { - cacheContext(workInProgress, unmaskedContext, context); } - - return instance; } - function callComponentWillMount(workInProgress, instance) { - var oldState = instance.state; + var child = createFiberFromTypeAndProps(Component.type, null, nextProps, workInProgress, workInProgress.mode, renderLanes); + child.ref = workInProgress.ref; + child.return = workInProgress; + workInProgress.child = child; + return child; + } - if (typeof instance.componentWillMount === "function") { - instance.componentWillMount(); - } + var currentChild = current.child; // This is always exactly one child - if (typeof instance.UNSAFE_componentWillMount === "function") { - instance.UNSAFE_componentWillMount(); - } + var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext(current, renderLanes); - if (oldState !== instance.state) { - { - error( - "%s.componentWillMount(): Assigning directly to this.state is " + - "deprecated (except inside a component's " + - "constructor). Use setState instead.", - getComponentNameFromFiber(workInProgress) || "Component" - ); - } + if (!hasScheduledUpdateOrContext) { + // This will be the props with resolved defaultProps, + // unlike current.memoizedProps which will be the unresolved ones. + var prevProps = currentChild.memoizedProps; // Default to shallow comparison - classComponentUpdater.enqueueReplaceState( - instance, - instance.state, - null - ); - } + var compare = Component.compare; + compare = compare !== null ? compare : shallowEqual; + + if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } + } // React DevTools reads this flag. - function callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ) { - var oldState = instance.state; - if (typeof instance.componentWillReceiveProps === "function") { - instance.componentWillReceiveProps(newProps, nextContext); - } + workInProgress.flags |= PerformedWork; + var newChild = createWorkInProgress(currentChild, nextProps); + newChild.ref = workInProgress.ref; + newChild.return = workInProgress; + workInProgress.child = newChild; + return newChild; +} - if (typeof instance.UNSAFE_componentWillReceiveProps === "function") { - instance.UNSAFE_componentWillReceiveProps(newProps, nextContext); +function updateSimpleMemoComponent(current, workInProgress, Component, nextProps, renderLanes) { + // TODO: current can be non-null here even if the component + // hasn't yet mounted. This happens when the inner render suspends. + // We'll need to figure out if this is fine or can cause issues. + if (current !== null) { + var prevProps = current.memoizedProps; + + if (shallowEqual(prevProps, nextProps) && current.ref === workInProgress.ref && ( // Prevent bailout if the implementation changed due to hot reload. + workInProgress.type === current.type )) { + didReceiveUpdate = false; // The props are shallowly equal. Reuse the previous props object, like we + // would during a normal fiber bailout. + // + // We don't have strong guarantees that the props object is referentially + // equal during updates where we can't bail out anyway — like if the props + // are shallowly equal, but there's a local state or context update in the + // same batch. + // + // However, as a principle, we should aim to make the behavior consistent + // across different ways of memoizing a component. For example, React.memo + // has a different internal Fiber layout if you pass a normal function + // component (SimpleMemoComponent) versus if you pass a different type + // like forwardRef (MemoComponent). But this is an implementation detail. + // Wrapping a component in forwardRef (or React.lazy, etc) shouldn't + // affect whether the props object is reused during a bailout. + + workInProgress.pendingProps = nextProps = prevProps; + + if (!checkScheduledUpdateOrContext(current, renderLanes)) { + // The pending lanes were cleared at the beginning of beginWork. We're + // about to bail out, but there might be other lanes that weren't + // included in the current render. Usually, the priority level of the + // remaining updates is accumulated during the evaluation of the + // component (i.e. when processing the update queue). But since since + // we're bailing out early *without* evaluating the component, we need + // to account for it here, too. Reset to the value of the current fiber. + // NOTE: This only applies to SimpleMemoComponent, not MemoComponent, + // because a MemoComponent fiber does not have hooks or an update queue; + // rather, it wraps around an inner component, which may or may not + // contains hooks. + // TODO: Move the reset at in beginWork out of the common path so that + // this is no longer necessary. + workInProgress.lanes = current.lanes; + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } else if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { + // This is a special case that only exists for legacy mode. + // See https://github.com/facebook/react/pull/19216. + didReceiveUpdate = true; } + } + } - if (instance.state !== oldState) { - { - var componentName = - getComponentNameFromFiber(workInProgress) || "Component"; - - if (!didWarnAboutStateAssignmentForComponent.has(componentName)) { - didWarnAboutStateAssignmentForComponent.add(componentName); - - error( - "%s.componentWillReceiveProps(): Assigning directly to " + - "this.state is deprecated (except inside a component's " + - "constructor). Use setState instead.", - componentName - ); - } - } - - classComponentUpdater.enqueueReplaceState( - instance, - instance.state, - null - ); - } - } // Invokes the mount life-cycles on a previously never rendered instance. + return updateFunctionComponent(current, workInProgress, Component, nextProps, renderLanes); +} - function mountClassInstance(workInProgress, ctor, newProps, renderLanes) { - { - checkClassInstance(workInProgress, ctor, newProps); - } +function updateOffscreenComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; + var nextChildren = nextProps.children; + var nextIsDetached = (workInProgress.stateNode._pendingVisibility & OffscreenDetached) !== 0; + var prevState = current !== null ? current.memoizedState : null; + markRef(current, workInProgress); - var instance = workInProgress.stateNode; - instance.props = newProps; - instance.state = workInProgress.memoizedState; - instance.refs = {}; - initializeUpdateQueue(workInProgress); - var contextType = ctor.contextType; + if (nextProps.mode === 'hidden' || enableLegacyHidden || nextIsDetached) { + // Rendering a hidden tree. + var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; - if (typeof contextType === "object" && contextType !== null) { - instance.context = readContext(contextType); - } else { - var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); - instance.context = getMaskedContext(workInProgress, unmaskedContext); - } + if (didSuspend) { + // Something suspended inside a hidden tree + // Include the base lanes from the last render + var nextBaseLanes = prevState !== null ? mergeLanes(prevState.baseLanes, renderLanes) : renderLanes; - { - if (instance.state === newProps) { - var componentName = getComponentNameFromType(ctor) || "Component"; + if (current !== null) { + // Reset to the current children + var currentChild = workInProgress.child = current.child; // The current render suspended, but there may be other lanes with + // pending work. We can't read `childLanes` from the current Offscreen + // fiber because we reset it when it was deferred; however, we can read + // the pending lanes from the child fibers. - if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) { - didWarnAboutDirectlyAssigningPropsToState.add(componentName); + var currentChildLanes = NoLanes; - error( - "%s: It is not recommended to assign props directly to state " + - "because updates to props won't be reflected in state. " + - "In most cases, it is better to use props directly.", - componentName - ); - } + while (currentChild !== null) { + currentChildLanes = mergeLanes(mergeLanes(currentChildLanes, currentChild.lanes), currentChild.childLanes); + currentChild = currentChild.sibling; } - if (workInProgress.mode & StrictLegacyMode) { - ReactStrictModeWarnings.recordLegacyContextWarning( - workInProgress, - instance - ); - } - - ReactStrictModeWarnings.recordUnsafeLifecycleWarnings( - workInProgress, - instance - ); - } - - instance.state = workInProgress.memoizedState; - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - instance.state = workInProgress.memoizedState; - } // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - typeof ctor.getDerivedStateFromProps !== "function" && - typeof instance.getSnapshotBeforeUpdate !== "function" && - (typeof instance.UNSAFE_componentWillMount === "function" || - typeof instance.componentWillMount === "function") - ) { - callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's - // process them now. - - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - instance.state = workInProgress.memoizedState; - } - - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } - - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } - } - - function resumeMountClassInstance( - workInProgress, - ctor, - newProps, - renderLanes - ) { - var instance = workInProgress.stateNode; - var unresolvedOldProps = workInProgress.memoizedProps; - var oldProps = resolveClassComponentProps( - ctor, - unresolvedOldProps, - workInProgress.type === workInProgress.elementType - ); - instance.props = oldProps; - var oldContext = instance.context; - var contextType = ctor.contextType; - var nextContext = emptyContextObject; - - if (typeof contextType === "object" && contextType !== null) { - nextContext = readContext(contextType); + var lanesWeJustAttempted = nextBaseLanes; + var remainingChildLanes = removeLanes(currentChildLanes, lanesWeJustAttempted); + workInProgress.childLanes = remainingChildLanes; } else { - var nextLegacyUnmaskedContext = getUnmaskedContext( - workInProgress, - ctor, - true - ); - nextContext = getMaskedContext( - workInProgress, - nextLegacyUnmaskedContext - ); - } - - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - var hasNewLifecycles = - typeof getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function"; // When comparing whether props changed, we should compare using the - // unresolved props object that is stored on the fiber, rather than the - // one that gets assigned to the instance, because that object may have been - // cloned to resolve default props and/or remove `ref`. - - var unresolvedNewProps = workInProgress.pendingProps; - var didReceiveNewProps = unresolvedNewProps !== unresolvedOldProps; // Note: During these life-cycles, instance.props/instance.state are what - // ever the previously attempted to render - not the "current". However, - // during componentDidUpdate we pass the "current" props. - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillReceiveProps === "function" || - typeof instance.componentWillReceiveProps === "function") - ) { - if (didReceiveNewProps || oldContext !== nextContext) { - callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ); - } - } - - resetHasForceUpdateBeforeProcessing(); - var oldState = workInProgress.memoizedState; - var newState = (instance.state = oldState); - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - newState = workInProgress.memoizedState; + workInProgress.childLanes = NoLanes; + workInProgress.child = null; + } - if ( - !didReceiveNewProps && - oldState === newState && - !hasContextChanged() && - !checkHasForceUpdateAfterProcessing() - ) { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } + return deferHiddenOffscreenComponent(current, workInProgress, nextBaseLanes); + } - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + // In legacy sync mode, don't defer the subtree. Render it now. + // TODO: Consider how Offscreen should work with transitions in the future + var nextState = { + baseLanes: NoLanes, + cachePool: null + }; + workInProgress.memoizedState = nextState; - return false; + { + // push the cache pool even though we're going to bail out + // because otherwise there'd be a context mismatch + if (current !== null) { + pushTransition(workInProgress, null); + } } - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - newState = workInProgress.memoizedState; - } - - var shouldUpdate = - checkHasForceUpdateAfterProcessing() || - checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ); + reuseHiddenContextOnStack(workInProgress); + pushOffscreenSuspenseHandler(workInProgress); + } else if (!includesSomeLane(renderLanes, OffscreenLane)) { + // We're hidden, and we're not rendering at Offscreen. We will bail out + // and resume this tree later. + // Schedule this fiber to re-render at Offscreen priority + workInProgress.lanes = workInProgress.childLanes = laneToLanes(OffscreenLane); // Include the base lanes from the last render + + var _nextBaseLanes = prevState !== null ? mergeLanes(prevState.baseLanes, renderLanes) : renderLanes; + + return deferHiddenOffscreenComponent(current, workInProgress, _nextBaseLanes); + } else { + // This is the second render. The surrounding visible content has already + // committed. Now we resume rendering the hidden tree. + // Rendering at offscreen, so we can clear the base lanes. + var _nextState = { + baseLanes: NoLanes, + cachePool: null + }; + workInProgress.memoizedState = _nextState; - if (shouldUpdate) { - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillMount === "function" || - typeof instance.componentWillMount === "function") - ) { - if (typeof instance.componentWillMount === "function") { - instance.componentWillMount(); - } + if (current !== null) { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + var prevCachePool = prevState !== null ? prevState.cachePool : null; // TODO: Consider if and how Offscreen pre-rendering should + // be attributed to the transition that spawned it - if (typeof instance.UNSAFE_componentWillMount === "function") { - instance.UNSAFE_componentWillMount(); - } - } + pushTransition(workInProgress, prevCachePool); + } // Push the lanes that were skipped when we bailed out. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } - } else { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } - - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } // If shouldComponentUpdate returned false, we should still update the - // memoized state to indicate that this work can be reused. - - workInProgress.memoizedProps = newProps; - workInProgress.memoizedState = newState; - } // Update the existing instance's state, props, and context pointers even - // if shouldComponentUpdate returns false. - - instance.props = newProps; - instance.state = newState; - instance.context = nextContext; - return shouldUpdate; - } // Invokes the update life-cycles and returns false if it shouldn't rerender. - - function updateClassInstance( - current, - workInProgress, - ctor, - newProps, - renderLanes - ) { - var instance = workInProgress.stateNode; - cloneUpdateQueue(current, workInProgress); - var unresolvedOldProps = workInProgress.memoizedProps; - var oldProps = resolveClassComponentProps( - ctor, - unresolvedOldProps, - workInProgress.type === workInProgress.elementType - ); - instance.props = oldProps; - var unresolvedNewProps = workInProgress.pendingProps; - var oldContext = instance.context; - var contextType = ctor.contextType; - var nextContext = emptyContextObject; - - if (typeof contextType === "object" && contextType !== null) { - nextContext = readContext(contextType); + if (prevState !== null) { + pushHiddenContext(workInProgress, prevState); } else { - var nextUnmaskedContext = getUnmaskedContext( - workInProgress, - ctor, - true - ); - nextContext = getMaskedContext(workInProgress, nextUnmaskedContext); - } - - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - var hasNewLifecycles = - typeof getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function"; // Note: During these life-cycles, instance.props/instance.state are what - // ever the previously attempted to render - not the "current". However, - // during componentDidUpdate we pass the "current" props. - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillReceiveProps === "function" || - typeof instance.componentWillReceiveProps === "function") - ) { - if ( - unresolvedOldProps !== unresolvedNewProps || - oldContext !== nextContext - ) { - callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ); - } - } - - resetHasForceUpdateBeforeProcessing(); - var oldState = workInProgress.memoizedState; - var newState = (instance.state = oldState); - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - newState = workInProgress.memoizedState; - - if ( - unresolvedOldProps === unresolvedNewProps && - oldState === newState && - !hasContextChanged() && - !checkHasForceUpdateAfterProcessing() && - !enableLazyContextPropagation - ) { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Update; - } - } - - if (typeof instance.getSnapshotBeforeUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Snapshot; - } - } - - return false; + reuseHiddenContextOnStack(workInProgress); } - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - newState = workInProgress.memoizedState; - } - - var shouldUpdate = - checkHasForceUpdateAfterProcessing() || - checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ) || // TODO: In some cases, we'll end up checking if context has changed twice, - // both before and after `shouldComponentUpdate` has been called. Not ideal, - // but I'm loath to refactor this function. This only happens for memoized - // components so it's not that common. - enableLazyContextPropagation; + pushOffscreenSuspenseHandler(workInProgress); + } + } else { + // Rendering a visible tree. + if (prevState !== null) { + // We're going from hidden -> visible. + var _prevCachePool = null; - if (shouldUpdate) { - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillUpdate === "function" || - typeof instance.componentWillUpdate === "function") - ) { - if (typeof instance.componentWillUpdate === "function") { - instance.componentWillUpdate(newProps, newState, nextContext); - } + { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + _prevCachePool = prevState.cachePool; + } - if (typeof instance.UNSAFE_componentWillUpdate === "function") { - instance.UNSAFE_componentWillUpdate( - newProps, - newState, - nextContext - ); - } - } + pushTransition(workInProgress, _prevCachePool); // Push the lanes that were skipped when we bailed out. - if (typeof instance.componentDidUpdate === "function") { - workInProgress.flags |= Update; - } + pushHiddenContext(workInProgress, prevState); + reuseSuspenseHandlerOnStack(workInProgress); // Since we're not hidden anymore, reset the state - if (typeof instance.getSnapshotBeforeUpdate === "function") { - workInProgress.flags |= Snapshot; - } - } else { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Update; - } + workInProgress.memoizedState = null; + } else { + // We weren't previously hidden, and we still aren't, so there's nothing + // special to do. Need to push to the stack regardless, though, to avoid + // a push/pop misalignment. + { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + if (current !== null) { + pushTransition(workInProgress, null); } + } // We're about to bail out, but we need to push this to the stack anyway + // to avoid a push/pop misalignment. - if (typeof instance.getSnapshotBeforeUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Snapshot; - } - } // If shouldComponentUpdate returned false, we should still update the - // memoized props/state to indicate that this work can be reused. - - workInProgress.memoizedProps = newProps; - workInProgress.memoizedState = newState; - } // Update the existing instance's state, props, and context pointers even - // if shouldComponentUpdate returns false. - - instance.props = newProps; - instance.state = newState; - instance.context = nextContext; - return shouldUpdate; - } - - function resolveClassComponentProps( - Component, - baseProps, // Only resolve default props if this is a lazy component. Otherwise, they - // would have already been resolved by the JSX runtime. - // TODO: We're going to remove default prop resolution from the JSX runtime - // and keep it only for class components. As part of that change, we should - // remove this extra check. - alreadyResolvedDefaultProps - ) { - var newProps = baseProps; - - var defaultProps = Component.defaultProps; - - if ( - defaultProps && // If disableDefaultPropsExceptForClasses is true, we always resolve - // default props here in the reconciler, rather than in the JSX runtime. - (disableDefaultPropsExceptForClasses || !alreadyResolvedDefaultProps) - ) { - // We may have already copied the props object above to remove ref. If so, - // we can modify that. Otherwise, copy the props object with Object.assign. - if (newProps === baseProps) { - newProps = assign({}, newProps); - } // Taken from old JSX runtime, where this used to live. - - for (var _propName in defaultProps) { - if (newProps[_propName] === undefined) { - newProps[_propName] = defaultProps[_propName]; - } - } - } - return newProps; + reuseHiddenContextOnStack(workInProgress); + reuseSuspenseHandlerOnStack(workInProgress); } + } - function resolveDefaultPropsOnNonClassComponent(Component, baseProps) { - if (disableDefaultPropsExceptForClasses) { - // Support for defaultProps is removed in React 19 for all types - // except classes. - return baseProps; - } + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (Component && Component.defaultProps) { - // Resolve default props. Taken from ReactElement - var props = assign({}, baseProps); - var defaultProps = Component.defaultProps; +function deferHiddenOffscreenComponent(current, workInProgress, nextBaseLanes, renderLanes) { + var nextState = { + baseLanes: nextBaseLanes, + // Save the cache pool so we can resume later. + cachePool: getOffscreenDeferredCache() + }; + workInProgress.memoizedState = nextState; - for (var propName in defaultProps) { - if (props[propName] === undefined) { - props[propName] = defaultProps[propName]; - } - } + { + // push the cache pool even though we're going to bail out + // because otherwise there'd be a context mismatch + if (current !== null) { + pushTransition(workInProgress, null); + } + } // We're about to bail out, but we need to push this to the stack anyway + // to avoid a push/pop misalignment. - return props; - } - - return baseProps; - } - - var reportGlobalError = - typeof reportError === "function" // In modern browsers, reportError will dispatch an error event, - ? // emulating an uncaught JavaScript error. - reportError - : function (error) { - if ( - typeof window === "object" && - typeof window.ErrorEvent === "function" - ) { - // Browser Polyfill - var message = - typeof error === "object" && - error !== null && - typeof error.message === "string" // eslint-disable-next-line react-internal/safe-string-coercion - ? String(error.message) // eslint-disable-next-line react-internal/safe-string-coercion - : String(error); - var event = new window.ErrorEvent("error", { - bubbles: true, - cancelable: true, - message: message, - error: error - }); - var shouldLog = window.dispatchEvent(event); - - if (!shouldLog) { - return; - } - } else if ( - typeof process === "object" && // $FlowFixMe[method-unbinding] - typeof process.emit === "function" - ) { - // Node Polyfill - process.emit("uncaughtException", error); - return; - } // eslint-disable-next-line react-internal/no-production-logging - - console["error"](error); - }; - var componentName = null; - var errorBoundaryName = null; - function defaultOnUncaughtError(error, errorInfo) { - // Overriding this can silence these warnings e.g. for tests. - // See https://github.com/facebook/react/pull/13384 - // For uncaught root errors we report them as uncaught to the browser's - // onerror callback. This won't have component stacks and the error addendum. - // So we add those into a separate console.warn. - reportGlobalError(error); + reuseHiddenContextOnStack(workInProgress); + pushOffscreenSuspenseHandler(workInProgress); - { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var componentNameMessage = componentName - ? "An error occurred in the <" + componentName + "> component:" - : "An error occurred in one of your React components:"; - console["warn"]( - "%s\n%s\n\n%s", - componentNameMessage, - componentStack || "", - "Consider adding an error boundary to your tree to customize error handling behavior.\n" + - "Visit https://react.dev/link/error-boundaries to learn more about error boundaries." - ); - } - } - function defaultOnCaughtError(error, errorInfo) { - // Overriding this can silence these warnings e.g. for tests. - // See https://github.com/facebook/react/pull/13384 - // Caught by error boundary - { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var componentNameMessage = componentName - ? "The above error occurred in the <" + componentName + "> component:" - : "The above error occurred in one of your React components:"; // In development, we provide our own message which includes the component stack - // in addition to the error. - // Don't transform to our wrapper - - console["error"]( - "%o\n\n%s\n%s\n\n%s", - error, - componentNameMessage, - componentStack, - "React will try to recreate this component tree from scratch " + - ("using the error boundary you provided, " + - (errorBoundaryName || "Anonymous") + - ".") - ); - } - } - function defaultOnRecoverableError(error, errorInfo) { - reportGlobalError(error); - } - function logUncaughtError(root, errorInfo) { - try { - if (true) { - componentName = errorInfo.source - ? getComponentNameFromFiber(errorInfo.source) - : null; - errorBoundaryName = null; - } + return null; +} // Note: These happen to have identical begin phases, for now. We shouldn't hold - var error = errorInfo.value; +function updateCacheComponent(current, workInProgress, renderLanes) { - if (true && ReactSharedInternals.actQueue !== null) { - // For uncaught errors inside act, we track them on the act and then - // rethrow them into the test. - ReactSharedInternals.thrownErrors.push(error); - return; - } + prepareToReadContext(workInProgress, renderLanes); + var parentCache = readContext(CacheContext); - var onUncaughtError = root.onUncaughtError; - onUncaughtError(error, { - componentStack: errorInfo.stack - }); - } catch (e) { - // This method must not throw, or React internal state will get messed up. - // If console.error is overridden, or logCapturedError() shows a dialog that throws, - // we want to report this error outside of the normal stack as a last resort. - // https://github.com/facebook/react/issues/13188 - setTimeout(function () { - throw e; - }); - } - } - function logCaughtError(root, boundary, errorInfo) { - try { - if (true) { - componentName = errorInfo.source - ? getComponentNameFromFiber(errorInfo.source) - : null; - errorBoundaryName = getComponentNameFromFiber(boundary); - } - - var error = errorInfo.value; - var onCaughtError = root.onCaughtError; - onCaughtError(error, { - componentStack: errorInfo.stack, - errorBoundary: - boundary.tag === ClassComponent - ? boundary.stateNode // This should always be the case as long as we only have class boundaries - : null - }); - } catch (e) { - // This method must not throw, or React internal state will get messed up. - // If console.error is overridden, or logCapturedError() shows a dialog that throws, - // we want to report this error outside of the normal stack as a last resort. - // https://github.com/facebook/react/issues/13188 - setTimeout(function () { - throw e; - }); - } + if (current === null) { + // Initial mount. Request a fresh cache from the pool. + var freshCache = requestCacheFromPool(renderLanes); + var initialState = { + parent: parentCache, + cache: freshCache + }; + workInProgress.memoizedState = initialState; + initializeUpdateQueue(workInProgress); + pushCacheProvider(workInProgress, freshCache); + } else { + // Check for updates + if (includesSomeLane(current.lanes, renderLanes)) { + cloneUpdateQueue(current, workInProgress); + processUpdateQueue(workInProgress, null, null, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); } - function createRootErrorUpdate(root, errorInfo, lane) { - var update = createUpdate(lane); // Unmount the root by rendering null. + var prevState = current.memoizedState; + var nextState = workInProgress.memoizedState; // Compare the new parent cache to the previous to see detect there was + // a refresh. - update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property - // being called "element". + if (prevState.parent !== parentCache) { + // Refresh in parent. Update the parent. + var derivedState = { + parent: parentCache, + cache: parentCache + }; // Copied from getDerivedStateFromProps implementation. Once the update + // queue is empty, persist the derived state onto the base state. - update.payload = { - element: null - }; + workInProgress.memoizedState = derivedState; - update.callback = function () { - logUncaughtError(root, errorInfo); - }; + if (workInProgress.lanes === NoLanes) { + var updateQueue = workInProgress.updateQueue; + workInProgress.memoizedState = updateQueue.baseState = derivedState; + } - return update; - } + pushCacheProvider(workInProgress, parentCache); // No need to propagate a context change because the refreshed parent + // already did. + } else { + // The parent didn't refresh. Now check if this cache did. + var nextCache = nextState.cache; + pushCacheProvider(workInProgress, nextCache); - function createClassErrorUpdate(lane) { - var update = createUpdate(lane); - update.tag = CaptureUpdate; - return update; + if (nextCache !== prevState.cache) { + // This cache refreshed. Propagate a context change. + propagateContextChange(workInProgress, CacheContext, renderLanes); + } } + } - function initializeClassErrorUpdate(update, root, fiber, errorInfo) { - var getDerivedStateFromError = fiber.type.getDerivedStateFromError; - - if (typeof getDerivedStateFromError === "function") { - var error$1 = errorInfo.value; + var nextChildren = workInProgress.pendingProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} // This should only be called if the name changes - update.payload = function () { - return getDerivedStateFromError(error$1); - }; +function updateFragment(current, workInProgress, renderLanes) { + var nextChildren = workInProgress.pendingProps; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - update.callback = function () { - { - markFailedErrorBoundaryForHotReloading(fiber); - } +function updateMode(current, workInProgress, renderLanes) { + var nextChildren = workInProgress.pendingProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - logCaughtError(root, fiber, errorInfo); - }; - } +function updateProfiler(current, workInProgress, renderLanes) { + { + workInProgress.flags |= Update; - var inst = fiber.stateNode; + { + // Reset effect durations for the next eventual effect phase. + // These are reset during render to allow the DevTools commit hook a chance to read them, + var stateNode = workInProgress.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; + } + } + + var nextProps = workInProgress.pendingProps; + var nextChildren = nextProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (inst !== null && typeof inst.componentDidCatch === "function") { - // $FlowFixMe[missing-this-annot] - update.callback = function callback() { - { - markFailedErrorBoundaryForHotReloading(fiber); - } +function markRef(current, workInProgress) { + // TODO: Check props.ref instead of fiber.ref when enableRefAsProp is on. + var ref = workInProgress.ref; - logCaughtError(root, fiber, errorInfo); + if (ref === null) { + if (current !== null && current.ref !== null) { + // Schedule a Ref effect + workInProgress.flags |= Ref | RefStatic; + } + } else { + if (typeof ref !== 'function' && typeof ref !== 'object') { + throw new Error('Expected ref to be a function, an object returned by React.createRef(), or undefined/null.'); + } - if (typeof getDerivedStateFromError !== "function") { - // To preserve the preexisting retry behavior of error boundaries, - // we keep track of which ones already failed during this batch. - // This gets reset before we yield back to the browser. - // TODO: Warn in strict mode if getDerivedStateFromError is - // not defined. - markLegacyErrorBoundaryAsFailed(this); - } + if (current === null || current.ref !== ref) { + if (current !== null) { + var oldRef = current.ref; + var newRef = ref; + + if (typeof oldRef === 'function' && typeof newRef === 'function' && typeof oldRef.__stringRef === 'string' && oldRef.__stringRef === newRef.__stringRef && oldRef.__stringRefType === newRef.__stringRefType && oldRef.__stringRefOwner === newRef.__stringRefOwner) { + // Although this is a different callback, it represents the same + // string ref. To avoid breaking old Meta code that relies on string + // refs only being attached once, reuse the old ref. This will + // prevent us from detaching and reattaching the ref on each update. + workInProgress.ref = oldRef; + return; + } + } // Schedule a Ref effect - var error$1 = errorInfo.value; - var stack = errorInfo.stack; - this.componentDidCatch(error$1, { - componentStack: stack !== null ? stack : "" - }); - { - if (typeof getDerivedStateFromError !== "function") { - // If componentDidCatch is the only error boundary method defined, - // then it needs to call setState to recover from errors. - // If no state update is scheduled then the boundary will swallow the error. - if (!includesSomeLane(fiber.lanes, SyncLane)) { - error( - "%s: Error boundaries should implement getDerivedStateFromError(). " + - "In that method, return a state update to display an error message or fallback UI.", - getComponentNameFromFiber(fiber) || "Unknown" - ); - } - } - } - }; - } + workInProgress.flags |= Ref | RefStatic; } + } +} - function resetSuspendedComponent(sourceFiber, rootRenderLanes) { - // A legacy mode Suspense quirk, only relevant to hook components. +function mountIncompleteFunctionComponent(_current, workInProgress, Component, nextProps, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); + workInProgress.tag = FunctionComponent; + return updateFunctionComponent(null, workInProgress, Component, nextProps, renderLanes); +} - var tag = sourceFiber.tag; +function updateFunctionComponent(current, workInProgress, Component, nextProps, renderLanes) { + { + if (Component.prototype && typeof Component.prototype.render === 'function') { + var componentName = getComponentNameFromType(Component) || 'Unknown'; - if ( - (sourceFiber.mode & ConcurrentMode) === NoMode && - (tag === FunctionComponent || - tag === ForwardRef || - tag === SimpleMemoComponent) - ) { - var currentSource = sourceFiber.alternate; + if (!didWarnAboutBadClass[componentName]) { + error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', componentName, componentName); - if (currentSource) { - sourceFiber.updateQueue = currentSource.updateQueue; - sourceFiber.memoizedState = currentSource.memoizedState; - sourceFiber.lanes = currentSource.lanes; - } else { - sourceFiber.updateQueue = null; - sourceFiber.memoizedState = null; - } + didWarnAboutBadClass[componentName] = true; } } - function markSuspenseBoundaryShouldCapture( - suspenseBoundary, - returnFiber, - sourceFiber, - root, - rootRenderLanes - ) { - // This marks a Suspense boundary so that when we're unwinding the stack, - // it captures the suspended "exception" and does a second (fallback) pass. - if ((suspenseBoundary.mode & ConcurrentMode) === NoMode) { - // Legacy Mode Suspense - // - // If the boundary is in legacy mode, we should *not* - // suspend the commit. Pretend as if the suspended component rendered - // null and keep rendering. When the Suspense boundary completes, - // we'll do a second pass to render the fallback. - if (suspenseBoundary === returnFiber) { - // Special case where we suspended while reconciling the children of - // a Suspense boundary's inner Offscreen wrapper fiber. This happens - // when a React.lazy component is a direct child of a - // Suspense boundary. - // - // Suspense boundaries are implemented as multiple fibers, but they - // are a single conceptual unit. The legacy mode behavior where we - // pretend the suspended fiber committed as `null` won't work, - // because in this case the "suspended" fiber is the inner - // Offscreen wrapper. - // - // Because the contents of the boundary haven't started rendering - // yet (i.e. nothing in the tree has partially rendered) we can - // switch to the regular, concurrent mode behavior: mark the - // boundary with ShouldCapture and enter the unwind phase. - suspenseBoundary.flags |= ShouldCapture; - } else { - suspenseBoundary.flags |= DidCapture; - sourceFiber.flags |= ForceUpdateForLegacySuspense; // We're going to commit this fiber even though it didn't complete. - // But we shouldn't call any lifecycle methods or callbacks. Remove - // all lifecycle effect tags. + if (workInProgress.mode & StrictLegacyMode) { + ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null); + } - sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete); + if (current === null) { + // Some validations were previously done in mountIndeterminateComponent however and are now run + // in updateFuntionComponent but only on mount + validateFunctionComponentInDev(workInProgress, workInProgress.type); + } + } - if (sourceFiber.tag === ClassComponent) { - var currentSourceFiber = sourceFiber.alternate; + var context; - if (currentSourceFiber === null) { - // This is a new mount. Change the tag so it's not mistaken for a - // completed class component. For example, we should not call - // componentWillUnmount if it is deleted. - sourceFiber.tag = IncompleteClassComponent; - } else { - // When we try rendering again, we should not reuse the current fiber, - // since it's known to be in an inconsistent state. Use a force update to - // prevent a bail out. - var update = createUpdate(SyncLane); - update.tag = ForceUpdate; - enqueueUpdate(sourceFiber, update, SyncLane); - } - } else if (sourceFiber.tag === FunctionComponent) { - var _currentSourceFiber = sourceFiber.alternate; + { + var unmaskedContext = getUnmaskedContext(workInProgress, Component, true); + context = getMaskedContext(workInProgress, unmaskedContext); + } - if (_currentSourceFiber === null) { - // This is a new mount. Change the tag so it's not mistaken for a - // completed function component. - sourceFiber.tag = IncompleteFunctionComponent; - } - } // The source fiber did not complete. Mark it with Sync priority to - // indicate that it still has pending work. + var nextChildren; + prepareToReadContext(workInProgress, renderLanes); - sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); - } + { + markComponentRenderStarted(workInProgress); + } - return suspenseBoundary; - } // Confirmed that the boundary is in a concurrent mode tree. Continue - // with the normal suspend path. - // - // After this we'll use a set of heuristics to determine whether this - // render pass will run to completion or restart or "suspend" the commit. - // The actual logic for this is spread out in different places. - // - // This first principle is that if we're going to suspend when we complete - // a root, then we should also restart if we get an update or ping that - // might unsuspend it, and vice versa. The only reason to suspend is - // because you think you might want to restart before committing. However, - // it doesn't make sense to restart only while in the period we're suspended. - // - // Restarting too aggressively is also not good because it starves out any - // intermediate loading state. So we use heuristics to determine when. - // Suspense Heuristics - // - // If nothing threw a Promise or all the same fallbacks are already showing, - // then don't suspend/restart. - // - // If this is an initial render of a new tree of Suspense boundaries and - // those trigger a fallback, then don't suspend/restart. We want to ensure - // that we can show the initial loading state as quickly as possible. - // - // If we hit a "Delayed" case, such as when we'd switch from content back into - // a fallback, then we should always suspend/restart. Transitions apply - // to this case. If none is defined, JND is used instead. - // - // If we're already showing a fallback and it gets "retried", allowing us to show - // another level, but there's still an inner boundary that would show a fallback, - // then we suspend/restart for 500ms since the last time we showed a fallback - // anywhere in the tree. This effectively throttles progressive loading into a - // consistent train of commits. This also gives us an opportunity to restart to - // get to the completed state slightly earlier. - // - // If there's ambiguity due to batching it's resolved in preference of: - // 1) "delayed", 2) "initial render", 3) "retry". - // - // We want to ensure that a "busy" state doesn't get force committed. We want to - // ensure that new initial loading states can commit as soon as possible. + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + nextChildren = renderWithHooks(current, workInProgress, Component, nextProps, context, renderLanes); + setIsRendering(false); + } - suspenseBoundary.flags |= ShouldCapture; // TODO: I think we can remove this, since we now use `DidCapture` in - // the begin phase to prevent an early bailout. + { + markComponentRenderStopped(); + } - suspenseBoundary.lanes = rootRenderLanes; - return suspenseBoundary; - } + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - function throwException( - root, - returnFiber, - sourceFiber, - value, - rootRenderLanes - ) { - // The source fiber did not complete. - sourceFiber.flags |= Incomplete; - { - if (isDevToolsPresent) { - // If we have pending work still, restore the original updaters - restorePendingUpdaters(root, rootRenderLanes); - } - } - - if (value !== null && typeof value === "object") { - if (typeof value.then === "function") { - // This is a wakeable. The component suspended. - var wakeable = value; - resetSuspendedComponent(sourceFiber); - - var suspenseBoundary = getSuspenseHandler(); - - if (suspenseBoundary !== null) { - switch (suspenseBoundary.tag) { - case SuspenseComponent: { - // If this suspense boundary is not already showing a fallback, mark - // the in-progress render as suspended. We try to perform this logic - // as soon as soon as possible during the render phase, so the work - // loop can know things like whether it's OK to switch to other tasks, - // or whether it can wait for data to resolve before continuing. - // TODO: Most of these checks are already performed when entering a - // Suspense boundary. We should track the information on the stack so - // we don't have to recompute it on demand. This would also allow us - // to unify with `use` which needs to perform this logic even sooner, - // before `throwException` is called. - if (sourceFiber.mode & ConcurrentMode) { - if (getShellBoundary() === null) { - // Suspended in the "shell" of the app. This is an undesirable - // loading state. We should avoid committing this tree. - renderDidSuspendDelayIfPossible(); - } else { - // If we suspended deeper than the shell, we don't need to delay - // the commmit. However, we still call renderDidSuspend if this is - // a new boundary, to tell the work loop that a new fallback has - // appeared during this render. - // TODO: Theoretically we should be able to delete this branch. - // It's currently used for two things: 1) to throttle the - // appearance of successive loading states, and 2) in - // SuspenseList, to determine whether the children include any - // pending fallbacks. For 1, we should apply throttling to all - // retries, not just ones that render an additional fallback. For - // 2, we should check subtreeFlags instead. Then we can delete - // this branch. - var current = suspenseBoundary.alternate; - - if (current === null) { - renderDidSuspend(); - } - } - } + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - suspenseBoundary.flags &= ~ForceClientRender; - markSuspenseBoundaryShouldCapture( - suspenseBoundary, - returnFiber, - sourceFiber, - root, - rootRenderLanes - ); // Retry listener - // - // If the fallback does commit, we need to attach a different type of - // listener. This one schedules an update on the Suspense boundary to - // turn the fallback state off. - // - // Stash the wakeable on the boundary fiber so we can access it in the - // commit phase. - // - // When the wakeable resolves, we'll attempt to render the boundary - // again ("retry"). - // Check if this is a Suspensey resource. We do not attach retry - // listeners to these, because we don't actually need them for - // rendering. Only for committing. Instead, if a fallback commits - // and the only thing that suspended was a Suspensey resource, we - // retry immediately. - // TODO: Refactor throwException so that we don't have to do this type - // check. The caller already knows what the cause was. - - var isSuspenseyResource = - wakeable === noopSuspenseyCommitThenable; - - if (isSuspenseyResource) { - suspenseBoundary.flags |= ScheduleRetry; - } else { - var retryQueue = suspenseBoundary.updateQueue; +function replayFunctionComponent(current, workInProgress, nextProps, Component, secondArg, renderLanes) { + // This function is used to replay a component that previously suspended, + // after its data resolves. It's a simplified version of + // updateFunctionComponent that reuses the hooks from the previous attempt. + prepareToReadContext(workInProgress, renderLanes); - if (retryQueue === null) { - suspenseBoundary.updateQueue = new Set([wakeable]); - } else { - retryQueue.add(wakeable); - } // We only attach ping listeners in concurrent mode. Legacy - // Suspense always commits fallbacks synchronously, so there are - // no pings. + { + markComponentRenderStarted(workInProgress); + } - if (suspenseBoundary.mode & ConcurrentMode) { - attachPingListener(root, wakeable, rootRenderLanes); - } - } + var nextChildren = replaySuspendedComponentWithHooks(current, workInProgress, Component, nextProps, secondArg); - return false; - } + { + markComponentRenderStopped(); + } - case OffscreenComponent: { - if (suspenseBoundary.mode & ConcurrentMode) { - suspenseBoundary.flags |= ShouldCapture; + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - var _isSuspenseyResource = - wakeable === noopSuspenseyCommitThenable; - if (_isSuspenseyResource) { - suspenseBoundary.flags |= ScheduleRetry; - } else { - var offscreenQueue = suspenseBoundary.updateQueue; - - if (offscreenQueue === null) { - var newOffscreenQueue = { - transitions: null, - markerInstances: null, - retryQueue: new Set([wakeable]) - }; - suspenseBoundary.updateQueue = newOffscreenQueue; - } else { - var _retryQueue = offscreenQueue.retryQueue; + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (_retryQueue === null) { - offscreenQueue.retryQueue = new Set([wakeable]); - } else { - _retryQueue.add(wakeable); - } - } +function updateClassComponent(current, workInProgress, Component, nextProps, renderLanes) { + { + // This is used by DevTools to force a boundary to error. + switch (shouldError(workInProgress)) { + case false: + { + var _instance = workInProgress.stateNode; + var ctor = workInProgress.type; // TODO This way of resetting the error boundary state is a hack. + // Is there a better way to do this? - attachPingListener(root, wakeable, rootRenderLanes); - } + var tempInstance = new ctor(workInProgress.memoizedProps, _instance.context); + var state = tempInstance.state; - return false; - } - } - } + _instance.updater.enqueueSetState(_instance, state, null); - throw new Error( - "Unexpected Suspense handler tag (" + - suspenseBoundary.tag + - "). This " + - "is a bug in React." - ); - } else { - // No boundary was found. Unless this is a sync update, this is OK. - // We can suspend and wait for more data to arrive. - if (root.tag === ConcurrentRoot) { - // In a concurrent root, suspending without a Suspense boundary is - // allowed. It will suspend indefinitely without committing. - // - // TODO: Should we have different behavior for discrete updates? What - // about flushSync? Maybe it should put the tree into an inert state, - // and potentially log a warning. Revisit this for a future release. - attachPingListener(root, wakeable, rootRenderLanes); - renderDidSuspendDelayIfPossible(); - return false; - } else { - // In a legacy root, suspending without a boundary is always an error. - var uncaughtSuspenseError = new Error( - "A component suspended while responding to synchronous input. This " + - "will cause the UI to be replaced with a loading indicator. To " + - "fix, updates that suspend should be wrapped " + - "with startTransition." - ); - value = uncaughtSuspenseError; - } - } + break; } - } // This is a regular error, not a Suspense wakeable. - var wrapperError = new Error( - "There was an error during concurrent rendering but React was able to recover by " + - "instead synchronously rendering the entire root.", + case true: { - cause: value - } - ); - queueConcurrentError( - createCapturedValueAtFiber(wrapperError, sourceFiber) - ); - renderDidError(); // We didn't find a boundary that could handle this type of exception. Start - // over and traverse parent path again, this time treating the exception - // as an error. - - if (returnFiber === null) { - // There's no return fiber, which means the root errored. This should never - // happen. Return `true` to trigger a fatal error (panic). - return true; - } - - var errorInfo = createCapturedValueAtFiber(value, sourceFiber); - var workInProgress = returnFiber; - - do { - switch (workInProgress.tag) { - case HostRoot: { - workInProgress.flags |= ShouldCapture; - - var _lane = pickArbitraryLane(rootRenderLanes); + workInProgress.flags |= DidCapture; + workInProgress.flags |= ShouldCapture; // eslint-disable-next-line react-internal/prod-error-codes - workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane); + var error$1 = new Error('Simulated error coming from DevTools'); + var lane = pickArbitraryLane(renderLanes); + workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); // Schedule the error boundary to re-render using updated state - var _update = createRootErrorUpdate( - workInProgress.stateNode, - errorInfo, - _lane - ); + var root = getWorkInProgressRoot(); - enqueueCapturedUpdate(workInProgress, _update); - return false; + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } - case ClassComponent: - // Capture and retry - var ctor = workInProgress.type; - var instance = workInProgress.stateNode; - - if ( - (workInProgress.flags & DidCapture) === NoFlags$1 && - (typeof ctor.getDerivedStateFromError === "function" || - (instance !== null && - typeof instance.componentDidCatch === "function" && - !isAlreadyFailedLegacyErrorBoundary(instance))) - ) { - workInProgress.flags |= ShouldCapture; - - var _lane2 = pickArbitraryLane(rootRenderLanes); - - workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane2); // Schedule the error boundary to re-render using updated state - - var _update2 = createClassErrorUpdate(_lane2); - - initializeClassErrorUpdate( - _update2, - root, - workInProgress, - errorInfo - ); - enqueueCapturedUpdate(workInProgress, _update2); - return false; - } + var update = createClassErrorUpdate(lane); + initializeClassErrorUpdate(update, root, workInProgress, createCapturedValueAtFiber(error$1, workInProgress)); + enqueueCapturedUpdate(workInProgress, update); + break; + } + } + } // Push context providers early to prevent context stack mismatches. + // During mounting we don't know the child context yet as the instance doesn't exist. + // We will invalidate the child context in finishClassComponent() right after rendering. - break; - } // $FlowFixMe[incompatible-type] we bail out when we get a null - workInProgress = workInProgress.return; - } while (workInProgress !== null); + var hasContext; - return false; - } + if (isContextProvider(Component)) { + hasContext = true; + pushContextProvider(workInProgress); + } else { + hasContext = false; + } - // into a dehydrated boundary. + prepareToReadContext(workInProgress, renderLanes); + var instance = workInProgress.stateNode; + var shouldUpdate; - var SelectiveHydrationException = new Error( - "This is not a real error. It's an implementation detail of React's " + - "selective hydration feature. If this leaks into userspace, it's a bug in " + - "React. Please file an issue." - ); - var didReceiveUpdate = false; - var didWarnAboutBadClass; - var didWarnAboutContextTypeOnFunctionComponent; - var didWarnAboutGetDerivedStateOnFunctionComponent; - var didWarnAboutFunctionRefs; - var didWarnAboutReassigningProps; - var didWarnAboutRevealOrder; - var didWarnAboutTailOptions; - var didWarnAboutDefaultPropsOnFunctionComponent; + if (instance === null) { + resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress); // In the initial pass we might need to construct the instance. - { - didWarnAboutBadClass = {}; - didWarnAboutContextTypeOnFunctionComponent = {}; - didWarnAboutGetDerivedStateOnFunctionComponent = {}; - didWarnAboutFunctionRefs = {}; - didWarnAboutReassigningProps = false; - didWarnAboutRevealOrder = {}; - didWarnAboutTailOptions = {}; - didWarnAboutDefaultPropsOnFunctionComponent = {}; - } - - function reconcileChildren( - current, - workInProgress, - nextChildren, - renderLanes - ) { - if (current === null) { - // If this is a fresh new component that hasn't been rendered yet, we - // won't update its child set by applying minimal side-effects. Instead, - // we will add them all to the child before it gets rendered. That means - // we can optimize this reconciliation pass by not tracking side-effects. - workInProgress.child = mountChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } else { - // If the current child is the same as the work in progress, it means that - // we haven't yet started any work on these children. Therefore, we use - // the clone algorithm to create a copy of all the current children. - // If we had any progressed work already, that is invalid at this point so - // let's throw it out. - workInProgress.child = reconcileChildFibers( - workInProgress, - current.child, - nextChildren, - renderLanes - ); - } - } - - function forceUnmountCurrentAndReconcile( - current, - workInProgress, - nextChildren, - renderLanes - ) { - // This function is fork of reconcileChildren. It's used in cases where we - // want to reconcile without matching against the existing set. This has the - // effect of all current children being unmounted; even if the type and key - // are the same, the old child is unmounted and a new child is created. - // - // To do this, we're going to go through the reconcile algorithm twice. In - // the first pass, we schedule a deletion for all the current children by - // passing null. - workInProgress.child = reconcileChildFibers( - workInProgress, - current.child, - null, - renderLanes - ); // In the second pass, we mount the new children. The trick here is that we - // pass null in place of where we usually pass the current child set. This has - // the effect of remounting all children regardless of whether their - // identities match. - - workInProgress.child = reconcileChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } - - function updateForwardRef( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - // TODO: current can be non-null here even if the component - // hasn't yet mounted. This happens after the first render suspends. - // We'll need to figure out if this is fine or can cause issues. - var render = Component.render; - var ref = workInProgress.ref; - var propsWithoutRef; + constructClassInstance(workInProgress, Component, nextProps); + mountClassInstance(workInProgress, Component, nextProps, renderLanes); + shouldUpdate = true; + } else if (current === null) { + // In a resume, we'll already have an instance we can reuse. + shouldUpdate = resumeMountClassInstance(workInProgress, Component, nextProps, renderLanes); + } else { + shouldUpdate = updateClassInstance(current, workInProgress, Component, nextProps, renderLanes); + } - { - propsWithoutRef = nextProps; - } // The rest is a fork of updateFunctionComponent + var nextUnitOfWork = finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderLanes); - var nextChildren; - prepareToReadContext(workInProgress, renderLanes); + { + var inst = workInProgress.stateNode; - { - markComponentRenderStarted(workInProgress); + if (shouldUpdate && inst.props !== nextProps) { + if (!didWarnAboutReassigningProps) { + error('It looks like %s is reassigning its own `this.props` while rendering. ' + 'This is not supported and can lead to confusing bugs.', getComponentNameFromFiber(workInProgress) || 'a component'); } - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - nextChildren = renderWithHooks( - current, - workInProgress, - render, - propsWithoutRef, - ref, - renderLanes - ); - setIsRendering(false); - } + didWarnAboutReassigningProps = true; + } + } - { - markComponentRenderStopped(); - } + return nextUnitOfWork; +} - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } +function finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderLanes) { + // Refs should update even if shouldComponentUpdate returns false + markRef(current, workInProgress); + var didCaptureError = (workInProgress.flags & DidCapture) !== NoFlags$1; - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + if (!shouldUpdate && !didCaptureError) { + // Context providers should defer to sCU for rendering + if (hasContext) { + invalidateContextProvider(workInProgress, Component, false); } - function updateMemoComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - if (current === null) { - var type = Component.type; + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - if ( - isSimpleFunctionComponent(type) && - Component.compare === null && // SimpleMemoComponent codepath doesn't resolve outer props either. - (disableDefaultPropsExceptForClasses || - Component.defaultProps === undefined) - ) { - var resolvedType = type; + var instance = workInProgress.stateNode; // Rerender - { - resolvedType = resolveFunctionForHotReloading(type); - } // If this is a plain function component without default props, - // and with only the default shallow comparison, we upgrade it - // to a SimpleMemoComponent to allow fast path updates. + { + ReactSharedInternals.owner = workInProgress; + } - workInProgress.tag = SimpleMemoComponent; - workInProgress.type = resolvedType; + var nextChildren; - { - validateFunctionComponentInDev(workInProgress, type); - } + if (didCaptureError && typeof Component.getDerivedStateFromError !== 'function') { + // If we captured an error, but getDerivedStateFromError is not defined, + // unmount all the children. componentDidCatch will schedule an update to + // re-render a fallback. This is temporary until we migrate everyone to + // the new API. + // TODO: Warn in a future release. + nextChildren = null; - return updateSimpleMemoComponent( - current, - workInProgress, - resolvedType, - nextProps, - renderLanes - ); - } + { + stopProfilerTimerIfRunning(); + } + } else { + { + markComponentRenderStarted(workInProgress); + } - if (!disableDefaultPropsExceptForClasses) { - { - if (Component.defaultProps !== undefined) { - var componentName = getComponentNameFromType(type) || "Unknown"; - - if (!didWarnAboutDefaultPropsOnFunctionComponent[componentName]) { - error( - "%s: Support for defaultProps will be removed from memo components " + - "in a future major release. Use JavaScript default parameters instead.", - componentName - ); - - didWarnAboutDefaultPropsOnFunctionComponent[componentName] = - true; - } - } - } - } + { + setIsRendering(true); + nextChildren = instance.render(); - var child = createFiberFromTypeAndProps( - Component.type, - null, - nextProps, - workInProgress, - workInProgress.mode, - renderLanes - ); - child.ref = workInProgress.ref; - child.return = workInProgress; - workInProgress.child = child; - return child; - } - - var currentChild = current.child; // This is always exactly one child - - var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( - current, - renderLanes - ); - - if (!hasScheduledUpdateOrContext) { - // This will be the props with resolved defaultProps, - // unlike current.memoizedProps which will be the unresolved ones. - var prevProps = currentChild.memoizedProps; // Default to shallow comparison - - var compare = Component.compare; - compare = compare !== null ? compare : shallowEqual; - - if ( - compare(prevProps, nextProps) && - current.ref === workInProgress.ref - ) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } - } // React DevTools reads this flag. - - workInProgress.flags |= PerformedWork; - var newChild = createWorkInProgress(currentChild, nextProps); - newChild.ref = workInProgress.ref; - newChild.return = workInProgress; - workInProgress.child = newChild; - return newChild; - } - - function updateSimpleMemoComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - // TODO: current can be non-null here even if the component - // hasn't yet mounted. This happens when the inner render suspends. - // We'll need to figure out if this is fine or can cause issues. - if (current !== null) { - var prevProps = current.memoizedProps; - - if ( - shallowEqual(prevProps, nextProps) && - current.ref === workInProgress.ref && // Prevent bailout if the implementation changed due to hot reload. - workInProgress.type === current.type - ) { - didReceiveUpdate = false; // The props are shallowly equal. Reuse the previous props object, like we - // would during a normal fiber bailout. - // - // We don't have strong guarantees that the props object is referentially - // equal during updates where we can't bail out anyway — like if the props - // are shallowly equal, but there's a local state or context update in the - // same batch. - // - // However, as a principle, we should aim to make the behavior consistent - // across different ways of memoizing a component. For example, React.memo - // has a different internal Fiber layout if you pass a normal function - // component (SimpleMemoComponent) versus if you pass a different type - // like forwardRef (MemoComponent). But this is an implementation detail. - // Wrapping a component in forwardRef (or React.lazy, etc) shouldn't - // affect whether the props object is reused during a bailout. - - workInProgress.pendingProps = nextProps = prevProps; - - if (!checkScheduledUpdateOrContext(current, renderLanes)) { - // The pending lanes were cleared at the beginning of beginWork. We're - // about to bail out, but there might be other lanes that weren't - // included in the current render. Usually, the priority level of the - // remaining updates is accumulated during the evaluation of the - // component (i.e. when processing the update queue). But since since - // we're bailing out early *without* evaluating the component, we need - // to account for it here, too. Reset to the value of the current fiber. - // NOTE: This only applies to SimpleMemoComponent, not MemoComponent, - // because a MemoComponent fiber does not have hooks or an update queue; - // rather, it wraps around an inner component, which may or may not - // contains hooks. - // TODO: Move the reset at in beginWork out of the common path so that - // this is no longer necessary. - workInProgress.lanes = current.lanes; - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } else if ( - (current.flags & ForceUpdateForLegacySuspense) !== - NoFlags$1 - ) { - // This is a special case that only exists for legacy mode. - // See https://github.com/facebook/react/pull/19216. - didReceiveUpdate = true; - } + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); + + try { + instance.render(); + } finally { + setIsStrictModeForDevtools(false); } } - return updateFunctionComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ); + setIsRendering(false); } - function updateOffscreenComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; - var nextChildren = nextProps.children; - var nextIsDetached = - (workInProgress.stateNode._pendingVisibility & OffscreenDetached) !== 0; - var prevState = current !== null ? current.memoizedState : null; - markRef(current, workInProgress); + { + markComponentRenderStopped(); + } + } // React DevTools reads this flag. - if (nextProps.mode === "hidden" || enableLegacyHidden || nextIsDetached) { - // Rendering a hidden tree. - var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; - if (didSuspend) { - // Something suspended inside a hidden tree - // Include the base lanes from the last render - var nextBaseLanes = - prevState !== null - ? mergeLanes(prevState.baseLanes, renderLanes) - : renderLanes; + workInProgress.flags |= PerformedWork; - if (current !== null) { - // Reset to the current children - var currentChild = (workInProgress.child = current.child); // The current render suspended, but there may be other lanes with - // pending work. We can't read `childLanes` from the current Offscreen - // fiber because we reset it when it was deferred; however, we can read - // the pending lanes from the child fibers. - - var currentChildLanes = NoLanes; - - while (currentChild !== null) { - currentChildLanes = mergeLanes( - mergeLanes(currentChildLanes, currentChild.lanes), - currentChild.childLanes - ); - currentChild = currentChild.sibling; - } + if (current !== null && didCaptureError) { + // If we're recovering from an error, reconcile without reusing any of + // the existing children. Conceptually, the normal children and the children + // that are shown on error are two different sets, so we shouldn't reuse + // normal children even if their identities match. + forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderLanes); + } else { + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } // Memoize state using the values we just used to render. + // TODO: Restructure so we never read values from the instance. - var lanesWeJustAttempted = nextBaseLanes; - var remainingChildLanes = removeLanes( - currentChildLanes, - lanesWeJustAttempted - ); - workInProgress.childLanes = remainingChildLanes; - } else { - workInProgress.childLanes = NoLanes; - workInProgress.child = null; - } - return deferHiddenOffscreenComponent( - current, - workInProgress, - nextBaseLanes - ); - } + workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it. - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - // In legacy sync mode, don't defer the subtree. Render it now. - // TODO: Consider how Offscreen should work with transitions in the future - var nextState = { - baseLanes: NoLanes, - cachePool: null - }; - workInProgress.memoizedState = nextState; + if (hasContext) { + invalidateContextProvider(workInProgress, Component, true); + } - { - // push the cache pool even though we're going to bail out - // because otherwise there'd be a context mismatch - if (current !== null) { - pushTransition(workInProgress, null); - } - } + return workInProgress.child; +} - reuseHiddenContextOnStack(workInProgress); - pushOffscreenSuspenseHandler(workInProgress); - } else if (!includesSomeLane(renderLanes, OffscreenLane)) { - // We're hidden, and we're not rendering at Offscreen. We will bail out - // and resume this tree later. - // Schedule this fiber to re-render at Offscreen priority - workInProgress.lanes = workInProgress.childLanes = - laneToLanes(OffscreenLane); // Include the base lanes from the last render - - var _nextBaseLanes = - prevState !== null - ? mergeLanes(prevState.baseLanes, renderLanes) - : renderLanes; - - return deferHiddenOffscreenComponent( - current, - workInProgress, - _nextBaseLanes - ); - } else { - // This is the second render. The surrounding visible content has already - // committed. Now we resume rendering the hidden tree. - // Rendering at offscreen, so we can clear the base lanes. - var _nextState = { - baseLanes: NoLanes, - cachePool: null - }; - workInProgress.memoizedState = _nextState; +function pushHostRootContext(workInProgress) { + var root = workInProgress.stateNode; - if (current !== null) { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - var prevCachePool = prevState !== null ? prevState.cachePool : null; // TODO: Consider if and how Offscreen pre-rendering should - // be attributed to the transition that spawned it + if (root.pendingContext) { + pushTopLevelContextObject(workInProgress, root.pendingContext, root.pendingContext !== root.context); + } else if (root.context) { + // Should always be set + pushTopLevelContextObject(workInProgress, root.context, false); + } - pushTransition(workInProgress, prevCachePool); - } // Push the lanes that were skipped when we bailed out. + pushHostContainer(workInProgress, root.containerInfo); +} - if (prevState !== null) { - pushHiddenContext(workInProgress, prevState); - } else { - reuseHiddenContextOnStack(workInProgress); - } +function updateHostRoot(current, workInProgress, renderLanes) { + pushHostRootContext(workInProgress); - pushOffscreenSuspenseHandler(workInProgress); - } - } else { - // Rendering a visible tree. - if (prevState !== null) { - // We're going from hidden -> visible. - var _prevCachePool = null; + if (current === null) { + throw new Error('Should have a current fiber. This is a bug in React.'); + } - { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - _prevCachePool = prevState.cachePool; - } + var nextProps = workInProgress.pendingProps; + var prevState = workInProgress.memoizedState; + var prevChildren = prevState.element; + cloneUpdateQueue(current, workInProgress); + processUpdateQueue(workInProgress, nextProps, null, renderLanes); + var nextState = workInProgress.memoizedState; - pushTransition(workInProgress, _prevCachePool); // Push the lanes that were skipped when we bailed out. + { + var nextCache = nextState.cache; + pushCacheProvider(workInProgress, nextCache); - pushHiddenContext(workInProgress, prevState); - reuseSuspenseHandlerOnStack(workInProgress); // Since we're not hidden anymore, reset the state + if (nextCache !== prevState.cache) { + // The root cache refreshed. + propagateContextChange(workInProgress, CacheContext, renderLanes); + } + } // This would ideally go inside processUpdateQueue, but because it suspends, + // it needs to happen after the `pushCacheProvider` call above to avoid a + // context stack mismatch. A bit unfortunate. - workInProgress.memoizedState = null; - } else { - // We weren't previously hidden, and we still aren't, so there's nothing - // special to do. Need to push to the stack regardless, though, to avoid - // a push/pop misalignment. - { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - if (current !== null) { - pushTransition(workInProgress, null); - } - } // We're about to bail out, but we need to push this to the stack anyway - // to avoid a push/pop misalignment. - reuseHiddenContextOnStack(workInProgress); - reuseSuspenseHandlerOnStack(workInProgress); - } - } + suspendIfUpdateReadFromEntangledAsyncAction(); // Caution: React DevTools currently depends on this property + // being called "element". - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + var nextChildren = nextState.element; + + { + + if (nextChildren === prevChildren) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } - function deferHiddenOffscreenComponent( - current, - workInProgress, - nextBaseLanes, - renderLanes - ) { - var nextState = { - baseLanes: nextBaseLanes, - // Save the cache pool so we can resume later. - cachePool: getOffscreenDeferredCache() - }; - workInProgress.memoizedState = nextState; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } - { - // push the cache pool even though we're going to bail out - // because otherwise there'd be a context mismatch - if (current !== null) { - pushTransition(workInProgress, null); - } - } // We're about to bail out, but we need to push this to the stack anyway - // to avoid a push/pop misalignment. + return workInProgress.child; +} - reuseHiddenContextOnStack(workInProgress); - pushOffscreenSuspenseHandler(workInProgress); +function updateHostComponent$1(current, workInProgress, renderLanes) { - return null; - } // Note: These happen to have identical begin phases, for now. We shouldn't hold + pushHostContext(workInProgress); + var nextProps = workInProgress.pendingProps; + var prevProps = current !== null ? current.memoizedProps : null; + var nextChildren = nextProps.children; - function updateCacheComponent(current, workInProgress, renderLanes) { - prepareToReadContext(workInProgress, renderLanes); - var parentCache = readContext(CacheContext); + if (prevProps !== null && shouldSetTextContent()) { + // If we're switching from a direct text child to a normal child, or to + // empty, we need to schedule the text content to be reset. + workInProgress.flags |= ContentReset; + } - if (current === null) { - // Initial mount. Request a fresh cache from the pool. - var freshCache = requestCacheFromPool(renderLanes); - var initialState = { - parent: parentCache, - cache: freshCache - }; - workInProgress.memoizedState = initialState; - initializeUpdateQueue(workInProgress); - pushCacheProvider(workInProgress, freshCache); - } else { - // Check for updates - if (includesSomeLane(current.lanes, renderLanes)) { - cloneUpdateQueue(current, workInProgress); - processUpdateQueue(workInProgress, null, null, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - } + if (enableAsyncActions) { + var memoizedState = workInProgress.memoizedState; - var prevState = current.memoizedState; - var nextState = workInProgress.memoizedState; // Compare the new parent cache to the previous to see detect there was - // a refresh. - - if (prevState.parent !== parentCache) { - // Refresh in parent. Update the parent. - var derivedState = { - parent: parentCache, - cache: parentCache - }; // Copied from getDerivedStateFromProps implementation. Once the update - // queue is empty, persist the derived state onto the base state. - - workInProgress.memoizedState = derivedState; - - if (workInProgress.lanes === NoLanes) { - var updateQueue = workInProgress.updateQueue; - workInProgress.memoizedState = updateQueue.baseState = derivedState; - } + if (memoizedState !== null) { + // This fiber has been upgraded to a stateful component. The only way + // happens currently is for form actions. We use hooks to track the + // pending and error state of the form. + // + // Once a fiber is upgraded to be stateful, it remains stateful for the + // rest of its lifetime. + var newState = renderTransitionAwareHostComponentWithHooks(current, workInProgress, renderLanes); // If the transition state changed, propagate the change to all the + // descendents. We use Context as an implementation detail for this. + // + // This is intentionally set here instead of pushHostContext because + // pushHostContext gets called before we process the state hook, to avoid + // a state mismatch in the event that something suspends. + // + // NOTE: This assumes that there cannot be nested transition providers, + // because the only renderer that implements this feature is React DOM, + // and forms cannot be nested. If we did support nested providers, then + // we would need to push a context value even for host fibers that + // haven't been upgraded yet. - pushCacheProvider(workInProgress, parentCache); // No need to propagate a context change because the refreshed parent - // already did. - } else { - // The parent didn't refresh. Now check if this cache did. - var nextCache = nextState.cache; - pushCacheProvider(workInProgress, nextCache); + { + HostTransitionContext._currentValue2 = newState; + } + + { + if (didReceiveUpdate) { + if (current !== null) { + var oldStateHook = current.memoizedState; + var oldState = oldStateHook.memoizedState; // This uses regular equality instead of Object.is because we assume + // that host transition state doesn't include NaN as a valid type. - if (nextCache !== prevState.cache) { - // This cache refreshed. Propagate a context change. - propagateContextChange(workInProgress, CacheContext, renderLanes); + if (oldState !== newState) { + propagateContextChange(workInProgress, HostTransitionContext, renderLanes); + } } } } + } + } + + markRef(current, workInProgress); + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - var nextChildren = workInProgress.pendingProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } // This should only be called if the name changes +function updateHostText$1(current, workInProgress) { + // immediately after. - function updateFragment(current, workInProgress, renderLanes) { - var nextChildren = workInProgress.pendingProps; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } - function updateMode(current, workInProgress, renderLanes) { - var nextChildren = workInProgress.pendingProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + return null; +} + +function mountLazyComponent(_current, workInProgress, elementType, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); + var props = workInProgress.pendingProps; + var lazyComponent = elementType; + var payload = lazyComponent._payload; + var init = lazyComponent._init; + var Component = init(payload); // Store the unwrapped component in the type. + + workInProgress.type = Component; + + if (typeof Component === 'function') { + if (isFunctionClassComponent(Component)) { + var resolvedProps = resolveClassComponentProps(Component, props, false); + workInProgress.tag = ClassComponent; - function updateProfiler(current, workInProgress, renderLanes) { { - workInProgress.flags |= Update; + workInProgress.type = Component = resolveClassForHotReloading(Component); + } - { - // Reset effect durations for the next eventual effect phase. - // These are reset during render to allow the DevTools commit hook a chance to read them, - var stateNode = workInProgress.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } + return updateClassComponent(null, workInProgress, Component, resolvedProps, renderLanes); + } else { + var _resolvedProps = disableDefaultPropsExceptForClasses ? props : resolveDefaultPropsOnNonClassComponent(Component, props); + + workInProgress.tag = FunctionComponent; + + { + validateFunctionComponentInDev(workInProgress, Component); + workInProgress.type = Component = resolveFunctionForHotReloading(Component); } - var nextProps = workInProgress.pendingProps; - var nextChildren = nextProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + return updateFunctionComponent(null, workInProgress, Component, _resolvedProps, renderLanes); } + } else if (Component !== undefined && Component !== null) { + var $$typeof = Component.$$typeof; - function markRef(current, workInProgress) { - // TODO: Check props.ref instead of fiber.ref when enableRefAsProp is on. - var ref = workInProgress.ref; + if ($$typeof === REACT_FORWARD_REF_TYPE) { + var _resolvedProps2 = disableDefaultPropsExceptForClasses ? props : resolveDefaultPropsOnNonClassComponent(Component, props); - if (ref === null) { - if (current !== null && current.ref !== null) { - // Schedule a Ref effect - workInProgress.flags |= Ref | RefStatic; - } - } else { - if (typeof ref !== "function" && typeof ref !== "object") { - throw new Error( - "Expected ref to be a function, an object returned by React.createRef(), or undefined/null." - ); - } - - if (current === null || current.ref !== ref) { - if (current !== null) { - var oldRef = current.ref; - var newRef = ref; - - if ( - typeof oldRef === "function" && - typeof newRef === "function" && - typeof oldRef.__stringRef === "string" && - oldRef.__stringRef === newRef.__stringRef && - oldRef.__stringRefType === newRef.__stringRefType && - oldRef.__stringRefOwner === newRef.__stringRefOwner - ) { - // Although this is a different callback, it represents the same - // string ref. To avoid breaking old Meta code that relies on string - // refs only being attached once, reuse the old ref. This will - // prevent us from detaching and reattaching the ref on each update. - workInProgress.ref = oldRef; - return; - } - } // Schedule a Ref effect + workInProgress.tag = ForwardRef; - workInProgress.flags |= Ref | RefStatic; - } + { + workInProgress.type = Component = resolveForwardRefForHotReloading(Component); } + + return updateForwardRef(null, workInProgress, Component, _resolvedProps2, renderLanes); + } else if ($$typeof === REACT_MEMO_TYPE) { + var _resolvedProps3 = disableDefaultPropsExceptForClasses ? props : resolveDefaultPropsOnNonClassComponent(Component, props); + + workInProgress.tag = MemoComponent; + return updateMemoComponent(null, workInProgress, Component, disableDefaultPropsExceptForClasses ? _resolvedProps3 : resolveDefaultPropsOnNonClassComponent(Component.type, _resolvedProps3), // The inner type can have defaults too + renderLanes); } + } - function mountIncompleteFunctionComponent( - _current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); - workInProgress.tag = FunctionComponent; - return updateFunctionComponent( - null, - workInProgress, - Component, - nextProps, - renderLanes - ); - } - - function updateFunctionComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - { - if ( - Component.prototype && - typeof Component.prototype.render === "function" - ) { - var componentName = getComponentNameFromType(Component) || "Unknown"; - - if (!didWarnAboutBadClass[componentName]) { - error( - "The <%s /> component appears to have a render method, but doesn't extend React.Component. " + - "This is likely to cause errors. Change %s to extend React.Component instead.", - componentName, - componentName - ); + var hint = ''; - didWarnAboutBadClass[componentName] = true; - } - } + { + if (Component !== null && typeof Component === 'object' && Component.$$typeof === REACT_LAZY_TYPE) { + hint = ' Did you wrap a component in React.lazy() more than once?'; + } + } // This message intentionally doesn't mention ForwardRef or MemoComponent + // because the fact that it's a separate type of work is an + // implementation detail. - if (workInProgress.mode & StrictLegacyMode) { - ReactStrictModeWarnings.recordLegacyContextWarning( - workInProgress, - null - ); - } - if (current === null) { - // Some validations were previously done in mountIndeterminateComponent however and are now run - // in updateFuntionComponent but only on mount - validateFunctionComponentInDev(workInProgress, workInProgress.type); - } - } + throw new Error("Element type is invalid. Received a promise that resolves to: " + Component + ". " + ("Lazy element type must resolve to a class or function." + hint)); +} - var context; +function mountIncompleteClassComponent(_current, workInProgress, Component, nextProps, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); // Promote the fiber to a class and try rendering again. - { - var unmaskedContext = getUnmaskedContext( - workInProgress, - Component, - true - ); - context = getMaskedContext(workInProgress, unmaskedContext); - } + workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent` + // Push context providers early to prevent context stack mismatches. + // During mounting we don't know the child context yet as the instance doesn't exist. + // We will invalidate the child context in finishClassComponent() right after rendering. - var nextChildren; - prepareToReadContext(workInProgress, renderLanes); + var hasContext; - { - markComponentRenderStarted(workInProgress); - } + if (isContextProvider(Component)) { + hasContext = true; + pushContextProvider(workInProgress); + } else { + hasContext = false; + } - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - nextChildren = renderWithHooks( - current, - workInProgress, - Component, - nextProps, - context, - renderLanes - ); - setIsRendering(false); + prepareToReadContext(workInProgress, renderLanes); + constructClassInstance(workInProgress, Component, nextProps); + mountClassInstance(workInProgress, Component, nextProps, renderLanes); + return finishClassComponent(null, workInProgress, Component, true, hasContext, renderLanes); +} + +function validateFunctionComponentInDev(workInProgress, Component) { + { + if (Component) { + if (Component.childContextTypes) { + error('childContextTypes cannot be defined on a function component.\n' + ' %s.childContextTypes = ...', Component.displayName || Component.name || 'Component'); } + } - { - markComponentRenderStopped(); + if (workInProgress.ref !== null) { + var info = ''; + var componentName = getComponentNameFromType(Component) || 'Unknown'; + var ownerName = getCurrentFiberOwnerNameInDevOrNull(); + + if (ownerName) { + info += '\n\nCheck the render method of `' + ownerName + '`.'; } - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); + var warningKey = componentName + '|' + (ownerName || ''); + + if (!didWarnAboutFunctionRefs[warningKey]) { + didWarnAboutFunctionRefs[warningKey] = true; + + error('Function components cannot be given refs. ' + 'Attempts to access this ref will fail. ' + 'Did you mean to use React.forwardRef()?%s', info); } + } + + if (!disableDefaultPropsExceptForClasses && Component.defaultProps !== undefined) { + var _componentName = getComponentNameFromType(Component) || 'Unknown'; + + if (!didWarnAboutDefaultPropsOnFunctionComponent[_componentName]) { + error('%s: Support for defaultProps will be removed from function components ' + 'in a future major release. Use JavaScript default parameters instead.', _componentName); - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + didWarnAboutDefaultPropsOnFunctionComponent[_componentName] = true; + } } - function replayFunctionComponent( - current, - workInProgress, - nextProps, - Component, - secondArg, - renderLanes - ) { - // This function is used to replay a component that previously suspended, - // after its data resolves. It's a simplified version of - // updateFunctionComponent that reuses the hooks from the previous attempt. - prepareToReadContext(workInProgress, renderLanes); + if (typeof Component.getDerivedStateFromProps === 'function') { + var _componentName2 = getComponentNameFromType(Component) || 'Unknown'; - { - markComponentRenderStarted(workInProgress); + if (!didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2]) { + error('%s: Function components do not support getDerivedStateFromProps.', _componentName2); + + didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = true; } + } - var nextChildren = replaySuspendedComponentWithHooks( - current, - workInProgress, - Component, - nextProps, - secondArg - ); + if (typeof Component.contextType === 'object' && Component.contextType !== null) { + var _componentName3 = getComponentNameFromType(Component) || 'Unknown'; - { - markComponentRenderStopped(); + if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) { + error('%s: Function components do not support contextType.', _componentName3); + + didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true; } + } + } +} + +var SUSPENDED_MARKER = { + dehydrated: null, + treeContext: null, + retryLane: NoLane +}; + +function mountSuspenseOffscreenState(renderLanes) { + return { + baseLanes: renderLanes, + cachePool: getSuspendedCache() + }; +} + +function updateSuspenseOffscreenState(prevOffscreenState, renderLanes) { + var cachePool = null; + + { + var prevCachePool = prevOffscreenState.cachePool; - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } + if (prevCachePool !== null) { + var parentCache = CacheContext._currentValue2; - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + if (prevCachePool.parent !== parentCache) { + // Detected a refresh in the parent. This overrides any previously + // suspended cache. + cachePool = { + parent: parentCache, + pool: parentCache + }; + } else { + // We can reuse the cache from last time. The only thing that would have + // overridden it is a parent refresh, which we checked for above. + cachePool = prevCachePool; + } + } else { + // If there's no previous cache pool, grab the current one. + cachePool = getSuspendedCache(); + } + } + + return { + baseLanes: mergeLanes(prevOffscreenState.baseLanes, renderLanes), + cachePool: cachePool + }; +} // TODO: Probably should inline this back + + +function shouldRemainOnFallback(current, workInProgress, renderLanes) { + // If we're already showing a fallback, there are cases where we need to + // remain on that fallback regardless of whether the content has resolved. + // For example, SuspenseList coordinates when nested content appears. + // TODO: For compatibility with offscreen prerendering, this should also check + // whether the current fiber (if it exists) was visible in the previous tree. + if (current !== null) { + var suspenseState = current.memoizedState; + + if (suspenseState === null) { + // Currently showing content. Don't hide it, even if ForceSuspenseFallback + // is true. More precise name might be "ForceRemainSuspenseFallback". + // Note: This is a factoring smell. Can't remain on a fallback if there's + // no fallback to remain on. + return false; } + } // Not currently showing content. Consult the Suspense context. - function updateClassComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - { - // This is used by DevTools to force a boundary to error. - switch (shouldError(workInProgress)) { - case false: { - var _instance = workInProgress.stateNode; - var ctor = workInProgress.type; // TODO This way of resetting the error boundary state is a hack. - // Is there a better way to do this? - - var tempInstance = new ctor( - workInProgress.memoizedProps, - _instance.context - ); - var state = tempInstance.state; - - _instance.updater.enqueueSetState(_instance, state, null); - break; - } + var suspenseContext = suspenseStackCursor.current; + return hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); +} - case true: { - workInProgress.flags |= DidCapture; - workInProgress.flags |= ShouldCapture; // eslint-disable-next-line react-internal/prod-error-codes +function getRemainingWorkInPrimaryTree(current, primaryTreeDidDefer, renderLanes) { + var remainingLanes = current !== null ? removeLanes(current.childLanes, renderLanes) : NoLanes; - var error$1 = new Error("Simulated error coming from DevTools"); - var lane = pickArbitraryLane(renderLanes); - workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); // Schedule the error boundary to re-render using updated state + if (primaryTreeDidDefer) { + // A useDeferredValue hook spawned a deferred task inside the primary tree. + // Ensure that we retry this component at the deferred priority. + // TODO: We could make this a per-subtree value instead of a global one. + // Would need to track it on the context stack somehow, similar to what + // we'd have to do for resumable contexts. + remainingLanes = mergeLanes(remainingLanes, peekDeferredLane()); + } - var root = getWorkInProgressRoot(); + return remainingLanes; +} - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } +function updateSuspenseComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend. + + { + if (shouldSuspend(workInProgress)) { + workInProgress.flags |= DidCapture; + } + } + + var showFallback = false; + var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; + + if (didSuspend || shouldRemainOnFallback(current)) { + // Something in this boundary's subtree already suspended. Switch to + // rendering the fallback children. + showFallback = true; + workInProgress.flags &= ~DidCapture; + } // Check if the primary children spawned a deferred task (useDeferredValue) + // during the first pass. + + + var didPrimaryChildrenDefer = (workInProgress.flags & DidDefer) !== NoFlags$1; + workInProgress.flags &= ~DidDefer; // OK, the next part is confusing. We're about to reconcile the Suspense + // boundary's children. This involves some custom reconciliation logic. Two + // main reasons this is so complicated. + // + // First, Legacy Mode has different semantics for backwards compatibility. The + // primary tree will commit in an inconsistent state, so when we do the + // second pass to render the fallback, we do some exceedingly, uh, clever + // hacks to make that not totally break. Like transferring effects and + // deletions from hidden tree. In Concurrent Mode, it's much simpler, + // because we bailout on the primary tree completely and leave it in its old + // state, no effects. Same as what we do for Offscreen (except that + // Offscreen doesn't have the first render pass). + // + // Second is hydration. During hydration, the Suspense fiber has a slightly + // different layout, where the child points to a dehydrated fragment, which + // contains the DOM rendered by the server. + // + // Third, even if you set all that aside, Suspense is like error boundaries in + // that we first we try to render one tree, and if that fails, we render again + // and switch to a different tree. Like a try/catch block. So we have to track + // which branch we're currently rendering. Ideally we would model this using + // a stack. + + if (current === null) { + + var nextPrimaryChildren = nextProps.children; + var nextFallbackChildren = nextProps.fallback; + + if (showFallback) { + pushFallbackTreeSuspenseHandler(workInProgress); + var fallbackFragment = mountSuspenseFallbackChildren(workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + var primaryChildFragment = workInProgress.child; + primaryChildFragment.memoizedState = mountSuspenseOffscreenState(renderLanes); + primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + + return fallbackFragment; + } else if (typeof nextProps.unstable_expectedLoadTime === 'number') { + // This is a CPU-bound tree. Skip this tree and show a placeholder to + // unblock the surrounding content. Then immediately retry after the + // initial commit. + pushFallbackTreeSuspenseHandler(workInProgress); + + var _fallbackFragment = mountSuspenseFallbackChildren(workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + + var _primaryChildFragment = workInProgress.child; + _primaryChildFragment.memoizedState = mountSuspenseOffscreenState(renderLanes); + _primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; // TODO: Transition Tracing is not yet implemented for CPU Suspense. + // Since nothing actually suspended, there will nothing to ping this to + // get it started back up to attempt the next item. While in terms of + // priority this work has the same priority as this current render, it's + // not part of the same transition once the transition has committed. If + // it's sync, we still want to yield so that it can be painted. + // Conceptually, this is really the same as pinging. We can use any + // RetryLane even if it's the one currently rendering since we're leaving + // it behind on this node. + + workInProgress.lanes = SomeRetryLane; + return _fallbackFragment; + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); + return mountSuspensePrimaryChildren(workInProgress, nextPrimaryChildren); + } + } else { + // This is an update. + // Special path for hydration + var prevState = current.memoizedState; + + if (prevState !== null) { + var _dehydrated = prevState.dehydrated; + + if (_dehydrated !== null) { + return updateDehydratedSuspenseComponent(current, workInProgress, didSuspend, didPrimaryChildrenDefer, nextProps, _dehydrated, prevState, renderLanes); + } + } + + if (showFallback) { + pushFallbackTreeSuspenseHandler(workInProgress); + var _nextFallbackChildren = nextProps.fallback; + var _nextPrimaryChildren = nextProps.children; + var fallbackChildFragment = updateSuspenseFallbackChildren(current, workInProgress, _nextPrimaryChildren, _nextFallbackChildren, renderLanes); + var _primaryChildFragment2 = workInProgress.child; + var prevOffscreenState = current.child.memoizedState; + _primaryChildFragment2.memoizedState = prevOffscreenState === null ? mountSuspenseOffscreenState(renderLanes) : updateSuspenseOffscreenState(prevOffscreenState, renderLanes); + + _primaryChildFragment2.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + return fallbackChildFragment; + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); + var _nextPrimaryChildren2 = nextProps.children; - var update = createClassErrorUpdate(lane); - initializeClassErrorUpdate( - update, - root, - workInProgress, - createCapturedValueAtFiber(error$1, workInProgress) - ); - enqueueCapturedUpdate(workInProgress, update); - break; - } - } - } // Push context providers early to prevent context stack mismatches. - // During mounting we don't know the child context yet as the instance doesn't exist. - // We will invalidate the child context in finishClassComponent() right after rendering. + var _primaryChildFragment3 = updateSuspensePrimaryChildren(current, workInProgress, _nextPrimaryChildren2, renderLanes); - var hasContext; + workInProgress.memoizedState = null; + return _primaryChildFragment3; + } + } +} - if (isContextProvider(Component)) { - hasContext = true; - pushContextProvider(workInProgress); - } else { - hasContext = false; - } - - prepareToReadContext(workInProgress, renderLanes); - var instance = workInProgress.stateNode; - var shouldUpdate; - - if (instance === null) { - resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress); // In the initial pass we might need to construct the instance. - - constructClassInstance(workInProgress, Component, nextProps); - mountClassInstance(workInProgress, Component, nextProps, renderLanes); - shouldUpdate = true; - } else if (current === null) { - // In a resume, we'll already have an instance we can reuse. - shouldUpdate = resumeMountClassInstance( - workInProgress, - Component, - nextProps, - renderLanes - ); - } else { - shouldUpdate = updateClassInstance( - current, - workInProgress, - Component, - nextProps, - renderLanes - ); - } - - var nextUnitOfWork = finishClassComponent( - current, - workInProgress, - Component, - shouldUpdate, - hasContext, - renderLanes - ); +function mountSuspensePrimaryChildren(workInProgress, primaryChildren, renderLanes) { + var mode = workInProgress.mode; + var primaryChildProps = { + mode: 'visible', + children: primaryChildren + }; + var primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, mode); + primaryChildFragment.return = workInProgress; + workInProgress.child = primaryChildFragment; + return primaryChildFragment; +} - { - var inst = workInProgress.stateNode; - - if (shouldUpdate && inst.props !== nextProps) { - if (!didWarnAboutReassigningProps) { - error( - "It looks like %s is reassigning its own `this.props` while rendering. " + - "This is not supported and can lead to confusing bugs.", - getComponentNameFromFiber(workInProgress) || "a component" - ); - } +function mountSuspenseFallbackChildren(workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var mode = workInProgress.mode; + var progressedPrimaryFragment = workInProgress.child; + var primaryChildProps = { + mode: 'hidden', + children: primaryChildren + }; + var primaryChildFragment; + var fallbackChildFragment; + + if ((mode & ConcurrentMode) === NoMode && progressedPrimaryFragment !== null) { + // In legacy mode, we commit the primary tree as if it successfully + // completed, even though it's in an inconsistent state. + primaryChildFragment = progressedPrimaryFragment; + primaryChildFragment.childLanes = NoLanes; + primaryChildFragment.pendingProps = primaryChildProps; + + if (workInProgress.mode & ProfileMode) { + // Reset the durations from the first pass so they aren't included in the + // final amounts. This seems counterintuitive, since we're intentionally + // not measuring part of the render phase, but this makes it match what we + // do in Concurrent Mode. + primaryChildFragment.actualDuration = 0; + primaryChildFragment.actualStartTime = -1; + primaryChildFragment.selfBaseDuration = 0; + primaryChildFragment.treeBaseDuration = 0; + } + + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); + } else { + primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, mode); + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); + } + + primaryChildFragment.return = workInProgress; + fallbackChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + return fallbackChildFragment; +} - didWarnAboutReassigningProps = true; - } - } +function mountWorkInProgressOffscreenFiber(offscreenProps, mode, renderLanes) { + // The props argument to `createFiberFromOffscreen` is `any` typed, so we use + // this wrapper function to constrain it. + return createFiberFromOffscreen(offscreenProps, mode, NoLanes, null); +} - return nextUnitOfWork; - } +function updateWorkInProgressOffscreenFiber(current, offscreenProps) { + // The props argument to `createWorkInProgress` is `any` typed, so we use this + // wrapper function to constrain it. + return createWorkInProgress(current, offscreenProps); +} - function finishClassComponent( - current, - workInProgress, - Component, - shouldUpdate, - hasContext, - renderLanes - ) { - // Refs should update even if shouldComponentUpdate returns false - markRef(current, workInProgress); - var didCaptureError = (workInProgress.flags & DidCapture) !== NoFlags$1; +function updateSuspensePrimaryChildren(current, workInProgress, primaryChildren, renderLanes) { + var currentPrimaryChildFragment = current.child; + var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; + var primaryChildFragment = updateWorkInProgressOffscreenFiber(currentPrimaryChildFragment, { + mode: 'visible', + children: primaryChildren + }); - if (!shouldUpdate && !didCaptureError) { - // Context providers should defer to sCU for rendering - if (hasContext) { - invalidateContextProvider(workInProgress, Component, false); - } + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + primaryChildFragment.lanes = renderLanes; + } - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } + primaryChildFragment.return = workInProgress; + primaryChildFragment.sibling = null; - var instance = workInProgress.stateNode; // Rerender + if (currentFallbackChildFragment !== null) { + // Delete the fallback child fragment + var deletions = workInProgress.deletions; - { - ReactSharedInternals.owner = workInProgress; - } + if (deletions === null) { + workInProgress.deletions = [currentFallbackChildFragment]; + workInProgress.flags |= ChildDeletion; + } else { + deletions.push(currentFallbackChildFragment); + } + } - var nextChildren; + workInProgress.child = primaryChildFragment; + return primaryChildFragment; +} - if ( - didCaptureError && - typeof Component.getDerivedStateFromError !== "function" - ) { - // If we captured an error, but getDerivedStateFromError is not defined, - // unmount all the children. componentDidCatch will schedule an update to - // re-render a fallback. This is temporary until we migrate everyone to - // the new API. - // TODO: Warn in a future release. - nextChildren = null; +function updateSuspenseFallbackChildren(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var mode = workInProgress.mode; + var currentPrimaryChildFragment = current.child; + var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; + var primaryChildProps = { + mode: 'hidden', + children: primaryChildren + }; + var primaryChildFragment; + + if ( // In legacy mode, we commit the primary tree as if it successfully + // completed, even though it's in an inconsistent state. + (mode & ConcurrentMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was + // already cloned. In legacy mode, the only case where this isn't true is + // when DevTools forces us to display a fallback; we skip the first render + // pass entirely and go straight to rendering the fallback. (In Concurrent + // Mode, SuspenseList can also trigger this scenario, but this is a legacy- + // only codepath.) + workInProgress.child !== currentPrimaryChildFragment) { + var progressedPrimaryFragment = workInProgress.child; + primaryChildFragment = progressedPrimaryFragment; + primaryChildFragment.childLanes = NoLanes; + primaryChildFragment.pendingProps = primaryChildProps; + + if (workInProgress.mode & ProfileMode) { + // Reset the durations from the first pass so they aren't included in the + // final amounts. This seems counterintuitive, since we're intentionally + // not measuring part of the render phase, but this makes it match what we + // do in Concurrent Mode. + primaryChildFragment.actualDuration = 0; + primaryChildFragment.actualStartTime = -1; + primaryChildFragment.selfBaseDuration = currentPrimaryChildFragment.selfBaseDuration; + primaryChildFragment.treeBaseDuration = currentPrimaryChildFragment.treeBaseDuration; + } // The fallback fiber was added as a deletion during the first pass. + // However, since we're going to remain on the fallback, we no longer want + // to delete it. + + + workInProgress.deletions = null; + } else { + primaryChildFragment = updateWorkInProgressOffscreenFiber(currentPrimaryChildFragment, primaryChildProps); // Since we're reusing a current tree, we need to reuse the flags, too. + // (We don't do this in legacy mode, because in legacy mode we don't re-use + // the current tree; see previous branch.) + + primaryChildFragment.subtreeFlags = currentPrimaryChildFragment.subtreeFlags & StaticMask; + } + + var fallbackChildFragment; + + if (currentFallbackChildFragment !== null) { + fallbackChildFragment = createWorkInProgress(currentFallbackChildFragment, fallbackChildren); + } else { + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); // Needs a placement effect because the parent (the Suspense boundary) already + // mounted but this is a new fiber. + + fallbackChildFragment.flags |= Placement; + } + + fallbackChildFragment.return = workInProgress; + primaryChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + return fallbackChildFragment; +} - { - stopProfilerTimerIfRunning(); - } - } else { - { - markComponentRenderStarted(workInProgress); - } +function retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes) { + // Falling back to client rendering. Because this has performance + // implications, it's considered a recoverable error, even though the user + // likely won't observe anything wrong with the UI. + // This will add the old fiber to the deletion list + reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated. + + var nextProps = workInProgress.pendingProps; + var primaryChildren = nextProps.children; + var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren); // Needs a placement effect because the parent (the Suspense boundary) already + // mounted but this is a new fiber. + + primaryChildFragment.flags |= Placement; + workInProgress.memoizedState = null; + return primaryChildFragment; +} - { - setIsRendering(true); - nextChildren = instance.render(); +function mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var fiberMode = workInProgress.mode; + var primaryChildProps = { + mode: 'visible', + children: primaryChildren + }; + var primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, fiberMode); + var fallbackChildFragment = createFiberFromFragment(fallbackChildren, fiberMode, renderLanes, null); // Needs a placement effect because the parent (the Suspense + // boundary) already mounted but this is a new fiber. + + fallbackChildFragment.flags |= Placement; + primaryChildFragment.return = workInProgress; + fallbackChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + + if ((workInProgress.mode & ConcurrentMode) !== NoMode) { + // We will have dropped the effect list which contains the + // deletion. We need to reconcile to delete the current child. + reconcileChildFibers(workInProgress, current.child, null, renderLanes); + } + + return fallbackChildFragment; +} - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); +function updateDehydratedSuspenseComponent(current, workInProgress, didSuspend, didPrimaryChildrenDefer, nextProps, suspenseInstance, suspenseState, renderLanes) { + if (!didSuspend) { + // This is the first render pass. Attempt to hydrate. + pushPrimaryTreeSuspenseHandler(workInProgress); // We should never be hydrating at this point because it is the first pass, - try { - instance.render(); - } finally { - setIsStrictModeForDevtools(false); - } - } + if (isSuspenseInstanceFallback()) { + // This boundary is in a permanent fallback state. In this case, we'll never + // get an update and we'll never be able to hydrate the final content. Let's just try the + // client side render instead. + var digest; + var message; + var stack = null; + var componentStack = null; - setIsRendering(false); - } + { + var _getSuspenseInstanceF = getSuspenseInstanceFallbackErrorDetails(); - { - markComponentRenderStopped(); - } - } // React DevTools reads this flag. - - workInProgress.flags |= PerformedWork; - - if (current !== null && didCaptureError) { - // If we're recovering from an error, reconcile without reusing any of - // the existing children. Conceptually, the normal children and the children - // that are shown on error are two different sets, so we shouldn't reuse - // normal children even if their identities match. - forceUnmountCurrentAndReconcile( - current, - workInProgress, - nextChildren, - renderLanes - ); - } else { - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - } // Memoize state using the values we just used to render. - // TODO: Restructure so we never read values from the instance. + digest = _getSuspenseInstanceF.digest; + message = _getSuspenseInstanceF.message; + stack = _getSuspenseInstanceF.stack; + componentStack = _getSuspenseInstanceF.componentStack; + } // TODO: Figure out a better signal than encoding a magic digest value. - workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it. - if (hasContext) { - invalidateContextProvider(workInProgress, Component, true); - } + { + var error; - return workInProgress.child; - } + if (message) { + // eslint-disable-next-line react-internal/prod-error-codes + error = new Error(message); + } else { + error = new Error('The server could not finish this Suspense boundary, likely ' + 'due to an error during server rendering. ' + 'Switched to client rendering.'); + } // Replace the stack with the server stack - function pushHostRootContext(workInProgress) { - var root = workInProgress.stateNode; - if (root.pendingContext) { - pushTopLevelContextObject( - workInProgress, - root.pendingContext, - root.pendingContext !== root.context - ); - } else if (root.context) { - // Should always be set - pushTopLevelContextObject(workInProgress, root.context, false); + error.stack = stack || ''; + error.digest = digest; + var capturedValue = createCapturedValueFromError(error, componentStack === undefined ? null : componentStack); + queueHydrationError(capturedValue); } - pushHostContainer(workInProgress, root.containerInfo); + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); } + // any context has changed, we need to treat is as if the input might have changed. - function updateHostRoot(current, workInProgress, renderLanes) { - pushHostRootContext(workInProgress); - if (current === null) { - throw new Error("Should have a current fiber. This is a bug in React."); - } + var hasContextChanged = includesSomeLane(renderLanes, current.childLanes); - var nextProps = workInProgress.pendingProps; - var prevState = workInProgress.memoizedState; - var prevChildren = prevState.element; - cloneUpdateQueue(current, workInProgress); - processUpdateQueue(workInProgress, nextProps, null, renderLanes); - var nextState = workInProgress.memoizedState; + if (didReceiveUpdate || hasContextChanged) { + // This boundary has changed since the first render. This means that we are now unable to + // hydrate it. We might still be able to hydrate it using a higher priority lane. + var root = getWorkInProgressRoot(); - { - var nextCache = nextState.cache; - pushCacheProvider(workInProgress, nextCache); + if (root !== null) { + var attemptHydrationAtLane = getBumpedLaneForHydration(root, renderLanes); + + if (attemptHydrationAtLane !== NoLane && attemptHydrationAtLane !== suspenseState.retryLane) { + // Intentionally mutating since this render will get interrupted. This + // is one of the very rare times where we mutate the current tree + // during the render phase. + suspenseState.retryLane = attemptHydrationAtLane; + enqueueConcurrentRenderForLane(current, attemptHydrationAtLane); + scheduleUpdateOnFiber(root, current, attemptHydrationAtLane); // Throw a special object that signals to the work loop that it should + // interrupt the current render. + // + // Because we're inside a React-only execution stack, we don't + // strictly need to throw here — we could instead modify some internal + // work loop state. But using an exception means we don't need to + // check for this case on every iteration of the work loop. So doing + // it this way moves the check out of the fast path. - if (nextCache !== prevState.cache) { - // The root cache refreshed. - propagateContextChange(workInProgress, CacheContext, renderLanes); + throw SelectiveHydrationException; } - } // This would ideally go inside processUpdateQueue, but because it suspends, - // it needs to happen after the `pushCacheProvider` call above to avoid a - // context stack mismatch. A bit unfortunate. - - suspendIfUpdateReadFromEntangledAsyncAction(); // Caution: React DevTools currently depends on this property - // being called "element". + } // If we did not selectively hydrate, we'll continue rendering without + // hydrating. Mark this tree as suspended to prevent it from committing + // outside a transition. + // + // This path should only happen if the hydration lane already suspended. + // Currently, it also happens during sync updates because there is no + // hydration lane for sync updates. + // TODO: We should ideally have a sync hydration lane that we can apply to do + // a pass where we hydrate this subtree in place using the previous Context and then + // reapply the update afterwards. + + + if (isSuspenseInstancePending()) ; else { + renderDidSuspendDelayIfPossible(); + } + + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); + } else if (isSuspenseInstancePending()) { + // This component is still pending more data from the server, so we can't hydrate its + // content. We treat it as if this component suspended itself. It might seem as if + // we could just try to render it client-side instead. However, this will perform a + // lot of unnecessary work and is unlikely to complete since it often will suspend + // on missing data anyway. Additionally, the server might be able to render more + // than we can on the client yet. In that case we'd end up with more fallback states + // on the client than if we just leave it alone. If the server times out or errors + // these should update this boundary to the permanent Fallback state instead. + // Mark it as having captured (i.e. suspended). + workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment. + + workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result. + + retryDehydratedSuspenseBoundary.bind(null, current); + registerSuspenseInstanceRetry(); + return null; + } else { + var primaryChildren = nextProps.children; + var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren); // Mark the children as hydrating. This is a fast path to know whether this + // tree is part of a hydrating tree. This is used to determine if a child + // node has fully mounted yet, and for scheduling event replaying. + // Conceptually this is similar to Placement in that a new subtree is + // inserted into the React tree here. It just happens to not need DOM + // mutations because it already exists. + + primaryChildFragment.flags |= Hydrating; + return primaryChildFragment; + } + } else { + // This is the second render pass. We already attempted to hydrated, but + // something either suspended or errored. + if (workInProgress.flags & ForceClientRender) { + // Something errored during hydration. Try again without hydrating. + // The error should've already been logged in throwException. + pushPrimaryTreeSuspenseHandler(workInProgress); + workInProgress.flags &= ~ForceClientRender; + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); + } else if (workInProgress.memoizedState !== null) { + // Something suspended and we should still be in dehydrated mode. + // Leave the existing child in place. + // Push to avoid a mismatch + pushFallbackTreeSuspenseHandler(workInProgress); + workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there + // but the normal suspense pass doesn't. + + workInProgress.flags |= DidCapture; + return null; + } else { + // Suspended but we should no longer be in dehydrated mode. + // Therefore we now have to render the fallback. + pushFallbackTreeSuspenseHandler(workInProgress); + var nextPrimaryChildren = nextProps.children; + var nextFallbackChildren = nextProps.fallback; + var fallbackChildFragment = mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + var _primaryChildFragment4 = workInProgress.child; + _primaryChildFragment4.memoizedState = mountSuspenseOffscreenState(renderLanes); + _primaryChildFragment4.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + return fallbackChildFragment; + } + } +} - var nextChildren = nextState.element; +function scheduleSuspenseWorkOnFiber(fiber, renderLanes, propagationRoot) { + fiber.lanes = mergeLanes(fiber.lanes, renderLanes); + var alternate = fiber.alternate; - { - if (nextChildren === prevChildren) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, renderLanes); + } - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - } + scheduleContextWorkOnParentPath(fiber.return, renderLanes, propagationRoot); +} - return workInProgress.child; - } +function propagateSuspenseContextChange(workInProgress, firstChild, renderLanes) { + // Mark any Suspense boundaries with fallbacks as having work to do. + // If they were previously forced into fallbacks, they may now be able + // to unblock. + var node = firstChild; - function updateHostComponent$1(current, workInProgress, renderLanes) { - pushHostContext(workInProgress); - var nextProps = workInProgress.pendingProps; - var prevProps = current !== null ? current.memoizedProps : null; - var nextChildren = nextProps.children; + while (node !== null) { + if (node.tag === SuspenseComponent) { + var state = node.memoizedState; - if (prevProps !== null && shouldSetTextContent()) { - // If we're switching from a direct text child to a normal child, or to - // empty, we need to schedule the text content to be reset. - workInProgress.flags |= ContentReset; + if (state !== null) { + scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); } + } else if (node.tag === SuspenseListComponent) { + // If the tail is hidden there might not be an Suspense boundaries + // to schedule work on. In this case we have to schedule it on the + // list itself. + // We don't have to traverse to the children of the list since + // the list will propagate the change when it rerenders. + scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } - if (enableAsyncActions) { - var memoizedState = workInProgress.memoizedState; - - if (memoizedState !== null) { - // This fiber has been upgraded to a stateful component. The only way - // happens currently is for form actions. We use hooks to track the - // pending and error state of the form. - // - // Once a fiber is upgraded to be stateful, it remains stateful for the - // rest of its lifetime. - var newState = renderTransitionAwareHostComponentWithHooks( - current, - workInProgress, - renderLanes - ); // If the transition state changed, propagate the change to all the - // descendents. We use Context as an implementation detail for this. - // - // This is intentionally set here instead of pushHostContext because - // pushHostContext gets called before we process the state hook, to avoid - // a state mismatch in the event that something suspends. - // - // NOTE: This assumes that there cannot be nested transition providers, - // because the only renderer that implements this feature is React DOM, - // and forms cannot be nested. If we did support nested providers, then - // we would need to push a context value even for host fibers that - // haven't been upgraded yet. + if (node === workInProgress) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - { - HostTransitionContext._currentValue2 = newState; - } - { - if (didReceiveUpdate) { - if (current !== null) { - var oldStateHook = current.memoizedState; - var oldState = oldStateHook.memoizedState; // This uses regular equality instead of Object.is because we assume - // that host transition state doesn't include NaN as a valid type. - - if (oldState !== newState) { - propagateContextChange( - workInProgress, - HostTransitionContext, - renderLanes - ); - } - } - } - } - } + while (node.sibling === null) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (node.return === null || node.return === workInProgress) { + return; } - markRef(current, workInProgress); - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + node = node.return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function updateHostText$1(current, workInProgress) { - // immediately after. - return null; - } + node.sibling.return = node.return; + node = node.sibling; + } +} - function mountLazyComponent( - _current, - workInProgress, - elementType, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); - var props = workInProgress.pendingProps; - var lazyComponent = elementType; - var payload = lazyComponent._payload; - var init = lazyComponent._init; - var Component = init(payload); // Store the unwrapped component in the type. - - workInProgress.type = Component; - - if (typeof Component === "function") { - if (isFunctionClassComponent(Component)) { - var resolvedProps = resolveClassComponentProps( - Component, - props, - false - ); - workInProgress.tag = ClassComponent; +function findLastContentRow(firstChild) { + // This is going to find the last row among these children that is already + // showing content on the screen, as opposed to being in fallback state or + // new. If a row has multiple Suspense boundaries, any of them being in the + // fallback state, counts as the whole row being in a fallback state. + // Note that the "rows" will be workInProgress, but any nested children + // will still be current since we haven't rendered them yet. The mounted + // order may not be the same as the new order. We use the new order. + var row = firstChild; + var lastContentRow = null; - { - workInProgress.type = Component = - resolveClassForHotReloading(Component); - } + while (row !== null) { + var currentRow = row.alternate; // New rows can't be content rows. - return updateClassComponent( - null, - workInProgress, - Component, - resolvedProps, - renderLanes - ); - } else { - var _resolvedProps = disableDefaultPropsExceptForClasses - ? props - : resolveDefaultPropsOnNonClassComponent(Component, props); + if (currentRow !== null && findFirstSuspended(currentRow) === null) { + lastContentRow = row; + } - workInProgress.tag = FunctionComponent; + row = row.sibling; + } - { - validateFunctionComponentInDev(workInProgress, Component); - workInProgress.type = Component = - resolveFunctionForHotReloading(Component); - } + return lastContentRow; +} - return updateFunctionComponent( - null, - workInProgress, - Component, - _resolvedProps, - renderLanes - ); - } - } else if (Component !== undefined && Component !== null) { - var $$typeof = Component.$$typeof; +function validateRevealOrder(revealOrder) { + { + if (revealOrder !== undefined && revealOrder !== 'forwards' && revealOrder !== 'backwards' && revealOrder !== 'together' && !didWarnAboutRevealOrder[revealOrder]) { + didWarnAboutRevealOrder[revealOrder] = true; + + if (typeof revealOrder === 'string') { + switch (revealOrder.toLowerCase()) { + case 'together': + case 'forwards': + case 'backwards': + { + error('"%s" is not a valid value for revealOrder on . ' + 'Use lowercase "%s" instead.', revealOrder, revealOrder.toLowerCase()); - if ($$typeof === REACT_FORWARD_REF_TYPE) { - var _resolvedProps2 = disableDefaultPropsExceptForClasses - ? props - : resolveDefaultPropsOnNonClassComponent(Component, props); + break; + } - workInProgress.tag = ForwardRef; + case 'forward': + case 'backward': + { + error('"%s" is not a valid value for revealOrder on . ' + 'React uses the -s suffix in the spelling. Use "%ss" instead.', revealOrder, revealOrder.toLowerCase()); - { - workInProgress.type = Component = - resolveForwardRefForHotReloading(Component); - } + break; + } - return updateForwardRef( - null, - workInProgress, - Component, - _resolvedProps2, - renderLanes - ); - } else if ($$typeof === REACT_MEMO_TYPE) { - var _resolvedProps3 = disableDefaultPropsExceptForClasses - ? props - : resolveDefaultPropsOnNonClassComponent(Component, props); - - workInProgress.tag = MemoComponent; - return updateMemoComponent( - null, - workInProgress, - Component, - disableDefaultPropsExceptForClasses - ? _resolvedProps3 - : resolveDefaultPropsOnNonClassComponent( - Component.type, - _resolvedProps3 - ), // The inner type can have defaults too - renderLanes - ); - } - } - - var hint = ""; + default: + error('"%s" is not a supported revealOrder on . ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder); - { - if ( - Component !== null && - typeof Component === "object" && - Component.$$typeof === REACT_LAZY_TYPE - ) { - hint = " Did you wrap a component in React.lazy() more than once?"; - } - } // This message intentionally doesn't mention ForwardRef or MemoComponent - // because the fact that it's a separate type of work is an - // implementation detail. - - throw new Error( - "Element type is invalid. Received a promise that resolves to: " + - Component + - ". " + - ("Lazy element type must resolve to a class or function." + hint) - ); - } - - function mountIncompleteClassComponent( - _current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); // Promote the fiber to a class and try rendering again. - - workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent` - // Push context providers early to prevent context stack mismatches. - // During mounting we don't know the child context yet as the instance doesn't exist. - // We will invalidate the child context in finishClassComponent() right after rendering. - - var hasContext; - - if (isContextProvider(Component)) { - hasContext = true; - pushContextProvider(workInProgress); + break; + } } else { - hasContext = false; + error('%s is not a supported value for revealOrder on . ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder); } - - prepareToReadContext(workInProgress, renderLanes); - constructClassInstance(workInProgress, Component, nextProps); - mountClassInstance(workInProgress, Component, nextProps, renderLanes); - return finishClassComponent( - null, - workInProgress, - Component, - true, - hasContext, - renderLanes - ); } + } +} - function validateFunctionComponentInDev(workInProgress, Component) { - { - if (Component) { - if (Component.childContextTypes) { - error( - "childContextTypes cannot be defined on a function component.\n" + - " %s.childContextTypes = ...", - Component.displayName || Component.name || "Component" - ); - } - } +function validateTailOptions(tailMode, revealOrder) { + { + if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) { + if (tailMode !== 'collapsed' && tailMode !== 'hidden') { + didWarnAboutTailOptions[tailMode] = true; - if (workInProgress.ref !== null) { - var info = ""; - var componentName = getComponentNameFromType(Component) || "Unknown"; - var ownerName = getCurrentFiberOwnerNameInDevOrNull(); + error('"%s" is not a supported value for tail on . ' + 'Did you mean "collapsed" or "hidden"?', tailMode); + } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') { + didWarnAboutTailOptions[tailMode] = true; - if (ownerName) { - info += "\n\nCheck the render method of `" + ownerName + "`."; - } + error(' is only valid if revealOrder is ' + '"forwards" or "backwards". ' + 'Did you mean to specify revealOrder="forwards"?', tailMode); + } + } + } +} - var warningKey = componentName + "|" + (ownerName || ""); +function validateSuspenseListNestedChild(childSlot, index) { + { + var isAnArray = isArray(childSlot); + var isIterable = !isAnArray && typeof getIteratorFn(childSlot) === 'function'; - if (!didWarnAboutFunctionRefs[warningKey]) { - didWarnAboutFunctionRefs[warningKey] = true; + if (isAnArray || isIterable) { + var type = isAnArray ? 'array' : 'iterable'; - error( - "Function components cannot be given refs. " + - "Attempts to access this ref will fail. " + - "Did you mean to use React.forwardRef()?%s", - info - ); - } - } + error('A nested %s was passed to row #%s in . Wrap it in ' + 'an additional SuspenseList to configure its revealOrder: ' + ' ... ' + '{%s} ... ' + '', type, index, type); - if ( - !disableDefaultPropsExceptForClasses && - Component.defaultProps !== undefined - ) { - var _componentName = getComponentNameFromType(Component) || "Unknown"; + return false; + } + } - if (!didWarnAboutDefaultPropsOnFunctionComponent[_componentName]) { - error( - "%s: Support for defaultProps will be removed from function components " + - "in a future major release. Use JavaScript default parameters instead.", - _componentName - ); + return true; +} - didWarnAboutDefaultPropsOnFunctionComponent[_componentName] = true; +function validateSuspenseListChildren(children, revealOrder) { + { + if ((revealOrder === 'forwards' || revealOrder === 'backwards') && children !== undefined && children !== null && children !== false) { + if (isArray(children)) { + for (var i = 0; i < children.length; i++) { + if (!validateSuspenseListNestedChild(children[i], i)) { + return; } } + } else { + var iteratorFn = getIteratorFn(children); - if (typeof Component.getDerivedStateFromProps === "function") { - var _componentName2 = - getComponentNameFromType(Component) || "Unknown"; - - if ( - !didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] - ) { - error( - "%s: Function components do not support getDerivedStateFromProps.", - _componentName2 - ); - - didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = - true; - } - } + if (typeof iteratorFn === 'function') { + var childrenIterator = iteratorFn.call(children); - if ( - typeof Component.contextType === "object" && - Component.contextType !== null - ) { - var _componentName3 = - getComponentNameFromType(Component) || "Unknown"; + if (childrenIterator) { + var step = childrenIterator.next(); + var _i = 0; - if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) { - error( - "%s: Function components do not support contextType.", - _componentName3 - ); + for (; !step.done; step = childrenIterator.next()) { + if (!validateSuspenseListNestedChild(step.value, _i)) { + return; + } - didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true; + _i++; + } } + } else { + error('A single row was passed to a . ' + 'This is not useful since it needs multiple rows. ' + 'Did you mean to pass multiple children or an array?', revealOrder); } } } + } +} - var SUSPENDED_MARKER = { - dehydrated: null, - treeContext: null, - retryLane: NoLane +function initSuspenseListRenderState(workInProgress, isBackwards, tail, lastContentRow, tailMode) { + var renderState = workInProgress.memoizedState; + + if (renderState === null) { + workInProgress.memoizedState = { + isBackwards: isBackwards, + rendering: null, + renderingStartTime: 0, + last: lastContentRow, + tail: tail, + tailMode: tailMode }; + } else { + // We can reuse the existing object from previous renders. + renderState.isBackwards = isBackwards; + renderState.rendering = null; + renderState.renderingStartTime = 0; + renderState.last = lastContentRow; + renderState.tail = tail; + renderState.tailMode = tailMode; + } +} // This can end up rendering this component multiple passes. +// The first pass splits the children fibers into two sets. A head and tail. +// We first render the head. If anything is in fallback state, we do another +// pass through beginWork to rerender all children (including the tail) with +// the force suspend context. If the first render didn't have anything in +// in fallback state. Then we render each row in the tail one-by-one. +// That happens in the completeWork phase without going back to beginWork. + + +function updateSuspenseListComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; + var revealOrder = nextProps.revealOrder; + var tailMode = nextProps.tail; + var newChildren = nextProps.children; + validateRevealOrder(revealOrder); + validateTailOptions(tailMode, revealOrder); + validateSuspenseListChildren(newChildren, revealOrder); + reconcileChildren(current, workInProgress, newChildren, renderLanes); + var suspenseContext = suspenseStackCursor.current; + var shouldForceFallback = hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); + + if (shouldForceFallback) { + suspenseContext = setShallowSuspenseListContext(suspenseContext, ForceSuspenseFallback); + workInProgress.flags |= DidCapture; + } else { + var didSuspendBefore = current !== null && (current.flags & DidCapture) !== NoFlags$1; + + if (didSuspendBefore) { + // If we previously forced a fallback, we need to schedule work + // on any nested boundaries to let them know to try to render + // again. This is the same as context updating. + propagateSuspenseContextChange(workInProgress, workInProgress.child, renderLanes); + } + + suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); + } + + pushSuspenseListContext(workInProgress, suspenseContext); + + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + // In legacy mode, SuspenseList doesn't work so we just + // use make it a noop by treating it as the default revealOrder. + workInProgress.memoizedState = null; + } else { + switch (revealOrder) { + case 'forwards': + { + var lastContentRow = findLastContentRow(workInProgress.child); + var tail; - function mountSuspenseOffscreenState(renderLanes) { - return { - baseLanes: renderLanes, - cachePool: getSuspendedCache() - }; - } + if (lastContentRow === null) { + // The whole list is part of the tail. + // TODO: We could fast path by just rendering the tail now. + tail = workInProgress.child; + workInProgress.child = null; + } else { + // Disconnect the tail rows after the content row. + // We're going to render them separately later. + tail = lastContentRow.sibling; + lastContentRow.sibling = null; + } - function updateSuspenseOffscreenState(prevOffscreenState, renderLanes) { - var cachePool = null; + initSuspenseListRenderState(workInProgress, false, // isBackwards + tail, lastContentRow, tailMode); + break; + } - { - var prevCachePool = prevOffscreenState.cachePool; + case 'backwards': + { + // We're going to find the first row that has existing content. + // At the same time we're going to reverse the list of everything + // we pass in the meantime. That's going to be our tail in reverse + // order. + var _tail = null; + var row = workInProgress.child; + workInProgress.child = null; + + while (row !== null) { + var currentRow = row.alternate; // New rows can't be content rows. + + if (currentRow !== null && findFirstSuspended(currentRow) === null) { + // This is the beginning of the main content. + workInProgress.child = row; + break; + } - if (prevCachePool !== null) { - var parentCache = CacheContext._currentValue2; + var nextRow = row.sibling; + row.sibling = _tail; + _tail = row; + row = nextRow; + } // TODO: If workInProgress.child is null, we can continue on the tail immediately. - if (prevCachePool.parent !== parentCache) { - // Detected a refresh in the parent. This overrides any previously - // suspended cache. - cachePool = { - parent: parentCache, - pool: parentCache - }; - } else { - // We can reuse the cache from last time. The only thing that would have - // overridden it is a parent refresh, which we checked for above. - cachePool = prevCachePool; - } - } else { - // If there's no previous cache pool, grab the current one. - cachePool = getSuspendedCache(); - } - } - return { - baseLanes: mergeLanes(prevOffscreenState.baseLanes, renderLanes), - cachePool: cachePool - }; - } // TODO: Probably should inline this back - - function shouldRemainOnFallback(current, workInProgress, renderLanes) { - // If we're already showing a fallback, there are cases where we need to - // remain on that fallback regardless of whether the content has resolved. - // For example, SuspenseList coordinates when nested content appears. - // TODO: For compatibility with offscreen prerendering, this should also check - // whether the current fiber (if it exists) was visible in the previous tree. - if (current !== null) { - var suspenseState = current.memoizedState; + initSuspenseListRenderState(workInProgress, true, // isBackwards + _tail, null, // last + tailMode); + break; + } - if (suspenseState === null) { - // Currently showing content. Don't hide it, even if ForceSuspenseFallback - // is true. More precise name might be "ForceRemainSuspenseFallback". - // Note: This is a factoring smell. Can't remain on a fallback if there's - // no fallback to remain on. - return false; + case 'together': + { + initSuspenseListRenderState(workInProgress, false, // isBackwards + null, // tail + null, // last + undefined); + break; } - } // Not currently showing content. Consult the Suspense context. - var suspenseContext = suspenseStackCursor.current; - return hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); + default: + { + // The default reveal order is the same as not having + // a boundary. + workInProgress.memoizedState = null; + } } + } - function getRemainingWorkInPrimaryTree( - current, - primaryTreeDidDefer, - renderLanes - ) { - var remainingLanes = - current !== null - ? removeLanes(current.childLanes, renderLanes) - : NoLanes; + return workInProgress.child; +} - if (primaryTreeDidDefer) { - // A useDeferredValue hook spawned a deferred task inside the primary tree. - // Ensure that we retry this component at the deferred priority. - // TODO: We could make this a per-subtree value instead of a global one. - // Would need to track it on the context stack somehow, similar to what - // we'd have to do for resumable contexts. - remainingLanes = mergeLanes(remainingLanes, peekDeferredLane()); - } +function updatePortalComponent(current, workInProgress, renderLanes) { + pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); + var nextChildren = workInProgress.pendingProps; + + if (current === null) { + // Portals are special because we don't append the children during mount + // but at commit. Therefore we need to track insertions which the normal + // flow doesn't do during mount. This doesn't happen at the root because + // the root always starts with a "current" with a null child. + // TODO: Consider unifying this with how the root works. + workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderLanes); + } else { + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } + + return workInProgress.child; +} - return remainingLanes; - } +var hasWarnedAboutUsingNoValuePropOnContextProvider = false; - function updateSuspenseComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend. +function updateContextProvider(current, workInProgress, renderLanes) { + var context; - { - if (shouldSuspend(workInProgress)) { - workInProgress.flags |= DidCapture; - } + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; + } + + var newProps = workInProgress.pendingProps; + var oldProps = workInProgress.memoizedProps; + var newValue = newProps.value; + + { + if (!('value' in newProps)) { + if (!hasWarnedAboutUsingNoValuePropOnContextProvider) { + hasWarnedAboutUsingNoValuePropOnContextProvider = true; + + error('The `value` prop is required for the ``. Did you misspell it or forget to pass it?'); } + } + } - var showFallback = false; - var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; + pushProvider(workInProgress, context, newValue); - if (didSuspend || shouldRemainOnFallback(current)) { - // Something in this boundary's subtree already suspended. Switch to - // rendering the fallback children. - showFallback = true; - workInProgress.flags &= ~DidCapture; - } // Check if the primary children spawned a deferred task (useDeferredValue) - // during the first pass. + { + if (oldProps !== null) { + var oldValue = oldProps.value; - var didPrimaryChildrenDefer = - (workInProgress.flags & DidDefer) !== NoFlags$1; - workInProgress.flags &= ~DidDefer; // OK, the next part is confusing. We're about to reconcile the Suspense - // boundary's children. This involves some custom reconciliation logic. Two - // main reasons this is so complicated. - // - // First, Legacy Mode has different semantics for backwards compatibility. The - // primary tree will commit in an inconsistent state, so when we do the - // second pass to render the fallback, we do some exceedingly, uh, clever - // hacks to make that not totally break. Like transferring effects and - // deletions from hidden tree. In Concurrent Mode, it's much simpler, - // because we bailout on the primary tree completely and leave it in its old - // state, no effects. Same as what we do for Offscreen (except that - // Offscreen doesn't have the first render pass). - // - // Second is hydration. During hydration, the Suspense fiber has a slightly - // different layout, where the child points to a dehydrated fragment, which - // contains the DOM rendered by the server. - // - // Third, even if you set all that aside, Suspense is like error boundaries in - // that we first we try to render one tree, and if that fails, we render again - // and switch to a different tree. Like a try/catch block. So we have to track - // which branch we're currently rendering. Ideally we would model this using - // a stack. - - if (current === null) { - var nextPrimaryChildren = nextProps.children; - var nextFallbackChildren = nextProps.fallback; - - if (showFallback) { - pushFallbackTreeSuspenseHandler(workInProgress); - var fallbackFragment = mountSuspenseFallbackChildren( - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - var primaryChildFragment = workInProgress.child; - primaryChildFragment.memoizedState = - mountSuspenseOffscreenState(renderLanes); - primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - - return fallbackFragment; - } else if (typeof nextProps.unstable_expectedLoadTime === "number") { - // This is a CPU-bound tree. Skip this tree and show a placeholder to - // unblock the surrounding content. Then immediately retry after the - // initial commit. - pushFallbackTreeSuspenseHandler(workInProgress); - - var _fallbackFragment = mountSuspenseFallbackChildren( - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - - var _primaryChildFragment = workInProgress.child; - _primaryChildFragment.memoizedState = - mountSuspenseOffscreenState(renderLanes); - _primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; // TODO: Transition Tracing is not yet implemented for CPU Suspense. - // Since nothing actually suspended, there will nothing to ping this to - // get it started back up to attempt the next item. While in terms of - // priority this work has the same priority as this current render, it's - // not part of the same transition once the transition has committed. If - // it's sync, we still want to yield so that it can be painted. - // Conceptually, this is really the same as pinging. We can use any - // RetryLane even if it's the one currently rendering since we're leaving - // it behind on this node. - - workInProgress.lanes = SomeRetryLane; - return _fallbackFragment; - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - return mountSuspensePrimaryChildren( - workInProgress, - nextPrimaryChildren - ); + if (objectIs(oldValue, newValue)) { + // No change. Bailout early if children are the same. + if (oldProps.children === newProps.children && !hasContextChanged()) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } } else { - // This is an update. - // Special path for hydration - var prevState = current.memoizedState; + // The context value changed. Search for matching consumers and schedule + // them to update. + propagateContextChange(workInProgress, context, renderLanes); + } + } + } - if (prevState !== null) { - var _dehydrated = prevState.dehydrated; - - if (_dehydrated !== null) { - return updateDehydratedSuspenseComponent( - current, - workInProgress, - didSuspend, - didPrimaryChildrenDefer, - nextProps, - _dehydrated, - prevState, - renderLanes - ); - } - } + var newChildren = newProps.children; + reconcileChildren(current, workInProgress, newChildren, renderLanes); + return workInProgress.child; +} - if (showFallback) { - pushFallbackTreeSuspenseHandler(workInProgress); - var _nextFallbackChildren = nextProps.fallback; - var _nextPrimaryChildren = nextProps.children; - var fallbackChildFragment = updateSuspenseFallbackChildren( - current, - workInProgress, - _nextPrimaryChildren, - _nextFallbackChildren, - renderLanes - ); - var _primaryChildFragment2 = workInProgress.child; - var prevOffscreenState = current.child.memoizedState; - _primaryChildFragment2.memoizedState = - prevOffscreenState === null - ? mountSuspenseOffscreenState(renderLanes) - : updateSuspenseOffscreenState(prevOffscreenState, renderLanes); - - _primaryChildFragment2.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - return fallbackChildFragment; - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - var _nextPrimaryChildren2 = nextProps.children; +function updateContextConsumer(current, workInProgress, renderLanes) { + var context; - var _primaryChildFragment3 = updateSuspensePrimaryChildren( - current, - workInProgress, - _nextPrimaryChildren2, - renderLanes - ); + if (enableRenderableContext) { + var consumerType = workInProgress.type; + context = consumerType._context; + } else { + context = workInProgress.type; - workInProgress.memoizedState = null; - return _primaryChildFragment3; - } + { + if (context._context !== undefined) { + context = context._context; } } + } - function mountSuspensePrimaryChildren( - workInProgress, - primaryChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var primaryChildProps = { - mode: "visible", - children: primaryChildren - }; - var primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - mode - ); - primaryChildFragment.return = workInProgress; - workInProgress.child = primaryChildFragment; - return primaryChildFragment; - } + var newProps = workInProgress.pendingProps; + var render = newProps.children; - function mountSuspenseFallbackChildren( - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var progressedPrimaryFragment = workInProgress.child; - var primaryChildProps = { - mode: "hidden", - children: primaryChildren - }; - var primaryChildFragment; - var fallbackChildFragment; - - if ( - (mode & ConcurrentMode) === NoMode && - progressedPrimaryFragment !== null - ) { - // In legacy mode, we commit the primary tree as if it successfully - // completed, even though it's in an inconsistent state. - primaryChildFragment = progressedPrimaryFragment; - primaryChildFragment.childLanes = NoLanes; - primaryChildFragment.pendingProps = primaryChildProps; - - if (workInProgress.mode & ProfileMode) { - // Reset the durations from the first pass so they aren't included in the - // final amounts. This seems counterintuitive, since we're intentionally - // not measuring part of the render phase, but this makes it match what we - // do in Concurrent Mode. - primaryChildFragment.actualDuration = 0; - primaryChildFragment.actualStartTime = -1; - primaryChildFragment.selfBaseDuration = 0; - primaryChildFragment.treeBaseDuration = 0; - } - - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); - } else { - primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - mode - ); - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); - } - - primaryChildFragment.return = workInProgress; - fallbackChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - return fallbackChildFragment; + { + if (typeof render !== 'function') { + error('A context consumer was rendered with multiple children, or a child ' + "that isn't a function. A context consumer expects a single child " + 'that is a function. If you did pass a function, make sure there ' + 'is no trailing or leading whitespace around it.'); } + } - function mountWorkInProgressOffscreenFiber( - offscreenProps, - mode, - renderLanes - ) { - // The props argument to `createFiberFromOffscreen` is `any` typed, so we use - // this wrapper function to constrain it. - return createFiberFromOffscreen(offscreenProps, mode, NoLanes, null); - } - - function updateWorkInProgressOffscreenFiber(current, offscreenProps) { - // The props argument to `createWorkInProgress` is `any` typed, so we use this - // wrapper function to constrain it. - return createWorkInProgress(current, offscreenProps); - } - - function updateSuspensePrimaryChildren( - current, - workInProgress, - primaryChildren, - renderLanes - ) { - var currentPrimaryChildFragment = current.child; - var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; - var primaryChildFragment = updateWorkInProgressOffscreenFiber( - currentPrimaryChildFragment, - { - mode: "visible", - children: primaryChildren - } - ); - - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - primaryChildFragment.lanes = renderLanes; - } - - primaryChildFragment.return = workInProgress; - primaryChildFragment.sibling = null; + prepareToReadContext(workInProgress, renderLanes); + var newValue = readContext(context); - if (currentFallbackChildFragment !== null) { - // Delete the fallback child fragment - var deletions = workInProgress.deletions; + { + markComponentRenderStarted(workInProgress); + } - if (deletions === null) { - workInProgress.deletions = [currentFallbackChildFragment]; - workInProgress.flags |= ChildDeletion; - } else { - deletions.push(currentFallbackChildFragment); - } - } + var newChildren; - workInProgress.child = primaryChildFragment; - return primaryChildFragment; - } + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + newChildren = render(newValue); + setIsRendering(false); + } - function updateSuspenseFallbackChildren( - current, - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var currentPrimaryChildFragment = current.child; - var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; - var primaryChildProps = { - mode: "hidden", - children: primaryChildren - }; - var primaryChildFragment; - - if ( - // In legacy mode, we commit the primary tree as if it successfully - // completed, even though it's in an inconsistent state. - (mode & ConcurrentMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was - // already cloned. In legacy mode, the only case where this isn't true is - // when DevTools forces us to display a fallback; we skip the first render - // pass entirely and go straight to rendering the fallback. (In Concurrent - // Mode, SuspenseList can also trigger this scenario, but this is a legacy- - // only codepath.) - workInProgress.child !== currentPrimaryChildFragment - ) { - var progressedPrimaryFragment = workInProgress.child; - primaryChildFragment = progressedPrimaryFragment; - primaryChildFragment.childLanes = NoLanes; - primaryChildFragment.pendingProps = primaryChildProps; - - if (workInProgress.mode & ProfileMode) { - // Reset the durations from the first pass so they aren't included in the - // final amounts. This seems counterintuitive, since we're intentionally - // not measuring part of the render phase, but this makes it match what we - // do in Concurrent Mode. - primaryChildFragment.actualDuration = 0; - primaryChildFragment.actualStartTime = -1; - primaryChildFragment.selfBaseDuration = - currentPrimaryChildFragment.selfBaseDuration; - primaryChildFragment.treeBaseDuration = - currentPrimaryChildFragment.treeBaseDuration; - } // The fallback fiber was added as a deletion during the first pass. - // However, since we're going to remain on the fallback, we no longer want - // to delete it. - - workInProgress.deletions = null; - } else { - primaryChildFragment = updateWorkInProgressOffscreenFiber( - currentPrimaryChildFragment, - primaryChildProps - ); // Since we're reusing a current tree, we need to reuse the flags, too. - // (We don't do this in legacy mode, because in legacy mode we don't re-use - // the current tree; see previous branch.) + { + markComponentRenderStopped(); + } // React DevTools reads this flag. - primaryChildFragment.subtreeFlags = - currentPrimaryChildFragment.subtreeFlags & StaticMask; - } - var fallbackChildFragment; + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, newChildren, renderLanes); + return workInProgress.child; +} - if (currentFallbackChildFragment !== null) { - fallbackChildFragment = createWorkInProgress( - currentFallbackChildFragment, - fallbackChildren - ); - } else { - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); // Needs a placement effect because the parent (the Suspense boundary) already - // mounted but this is a new fiber. +function markWorkInProgressReceivedUpdate() { + didReceiveUpdate = true; +} - fallbackChildFragment.flags |= Placement; - } +function resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress) { + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + if (current !== null) { + // A lazy component only mounts if it suspended inside a non- + // concurrent tree, in an inconsistent state. We want to treat it like + // a new mount, even though an empty version of it already committed. + // Disconnect the alternate pointers. + current.alternate = null; + workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect - fallbackChildFragment.return = workInProgress; - primaryChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - return fallbackChildFragment; + workInProgress.flags |= Placement; } + } +} - function retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ) { - // Falling back to client rendering. Because this has performance - // implications, it's considered a recoverable error, even though the user - // likely won't observe anything wrong with the UI. - // This will add the old fiber to the deletion list - reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated. - - var nextProps = workInProgress.pendingProps; - var primaryChildren = nextProps.children; - var primaryChildFragment = mountSuspensePrimaryChildren( - workInProgress, - primaryChildren - ); // Needs a placement effect because the parent (the Suspense boundary) already - // mounted but this is a new fiber. +function bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes) { + if (current !== null) { + // Reuse previous dependencies + workInProgress.dependencies = current.dependencies; + } - primaryChildFragment.flags |= Placement; - workInProgress.memoizedState = null; - return primaryChildFragment; - } + { + // Don't update "base" render times for bailouts. + stopProfilerTimerIfRunning(); + } - function mountSuspenseFallbackAfterRetryWithoutHydrating( - current, - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var fiberMode = workInProgress.mode; - var primaryChildProps = { - mode: "visible", - children: primaryChildren - }; - var primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - fiberMode - ); - var fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - fiberMode, - renderLanes, - null - ); // Needs a placement effect because the parent (the Suspense - // boundary) already mounted but this is a new fiber. - - fallbackChildFragment.flags |= Placement; - primaryChildFragment.return = workInProgress; - fallbackChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - - if ((workInProgress.mode & ConcurrentMode) !== NoMode) { - // We will have dropped the effect list which contains the - // deletion. We need to reconcile to delete the current child. - reconcileChildFibers(workInProgress, current.child, null, renderLanes); - } + markSkippedUpdateLanes(workInProgress.lanes); // Check if the children have any pending work. - return fallbackChildFragment; + if (!includesSomeLane(renderLanes, workInProgress.childLanes)) { + // The children don't have any work either. We can skip them. + // TODO: Once we add back resuming, we should check if the children are + // a work-in-progress set. If so, we need to transfer their effects. + { + return null; } + } // This fiber doesn't have work, but its subtree does. Clone the child + // fibers and continue. - function updateDehydratedSuspenseComponent( - current, - workInProgress, - didSuspend, - didPrimaryChildrenDefer, - nextProps, - suspenseInstance, - suspenseState, - renderLanes - ) { - if (!didSuspend) { - // This is the first render pass. Attempt to hydrate. - pushPrimaryTreeSuspenseHandler(workInProgress); // We should never be hydrating at this point because it is the first pass, - - if (isSuspenseInstanceFallback()) { - // This boundary is in a permanent fallback state. In this case, we'll never - // get an update and we'll never be able to hydrate the final content. Let's just try the - // client side render instead. - var digest; - var message; - var stack = null; - var componentStack = null; - { - var _getSuspenseInstanceF = - getSuspenseInstanceFallbackErrorDetails(); + cloneChildFibers(current, workInProgress); + return workInProgress.child; +} - digest = _getSuspenseInstanceF.digest; - message = _getSuspenseInstanceF.message; - stack = _getSuspenseInstanceF.stack; - componentStack = _getSuspenseInstanceF.componentStack; - } // TODO: Figure out a better signal than encoding a magic digest value. +function remountFiber(current, oldWorkInProgress, newWorkInProgress) { + { + var returnFiber = oldWorkInProgress.return; - { - var error; + if (returnFiber === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Cannot swap the root fiber.'); + } // Disconnect from the old current. + // It will get deleted. - if (message) { - // eslint-disable-next-line react-internal/prod-error-codes - error = new Error(message); - } else { - error = new Error( - "The server could not finish this Suspense boundary, likely " + - "due to an error during server rendering. " + - "Switched to client rendering." - ); - } // Replace the stack with the server stack - - error.stack = stack || ""; - error.digest = digest; - var capturedValue = createCapturedValueFromError( - error, - componentStack === undefined ? null : componentStack - ); - queueHydrationError(capturedValue); - } - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } - // any context has changed, we need to treat is as if the input might have changed. + current.alternate = null; + oldWorkInProgress.alternate = null; // Connect to the new tree. + + newWorkInProgress.index = oldWorkInProgress.index; + newWorkInProgress.sibling = oldWorkInProgress.sibling; + newWorkInProgress.return = oldWorkInProgress.return; + newWorkInProgress.ref = oldWorkInProgress.ref; - var hasContextChanged = includesSomeLane( - renderLanes, - current.childLanes - ); + { + newWorkInProgress._debugInfo = oldWorkInProgress._debugInfo; + } // Replace the child/sibling pointers above it. - if (didReceiveUpdate || hasContextChanged) { - // This boundary has changed since the first render. This means that we are now unable to - // hydrate it. We might still be able to hydrate it using a higher priority lane. - var root = getWorkInProgressRoot(); - if (root !== null) { - var attemptHydrationAtLane = getBumpedLaneForHydration( - root, - renderLanes - ); + if (oldWorkInProgress === returnFiber.child) { + returnFiber.child = newWorkInProgress; + } else { + var prevSibling = returnFiber.child; - if ( - attemptHydrationAtLane !== NoLane && - attemptHydrationAtLane !== suspenseState.retryLane - ) { - // Intentionally mutating since this render will get interrupted. This - // is one of the very rare times where we mutate the current tree - // during the render phase. - suspenseState.retryLane = attemptHydrationAtLane; - enqueueConcurrentRenderForLane(current, attemptHydrationAtLane); - scheduleUpdateOnFiber(root, current, attemptHydrationAtLane); // Throw a special object that signals to the work loop that it should - // interrupt the current render. - // - // Because we're inside a React-only execution stack, we don't - // strictly need to throw here — we could instead modify some internal - // work loop state. But using an exception means we don't need to - // check for this case on every iteration of the work loop. So doing - // it this way moves the check out of the fast path. + if (prevSibling === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Expected parent to have a child.'); + } // $FlowFixMe[incompatible-use] found when upgrading Flow - throw SelectiveHydrationException; - } - } // If we did not selectively hydrate, we'll continue rendering without - // hydrating. Mark this tree as suspended to prevent it from committing - // outside a transition. - // - // This path should only happen if the hydration lane already suspended. - // Currently, it also happens during sync updates because there is no - // hydration lane for sync updates. - // TODO: We should ideally have a sync hydration lane that we can apply to do - // a pass where we hydrate this subtree in place using the previous Context and then - // reapply the update afterwards. - - if (isSuspenseInstancePending()); - else { - renderDidSuspendDelayIfPossible(); - } - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } else if (isSuspenseInstancePending()) { - // This component is still pending more data from the server, so we can't hydrate its - // content. We treat it as if this component suspended itself. It might seem as if - // we could just try to render it client-side instead. However, this will perform a - // lot of unnecessary work and is unlikely to complete since it often will suspend - // on missing data anyway. Additionally, the server might be able to render more - // than we can on the client yet. In that case we'd end up with more fallback states - // on the client than if we just leave it alone. If the server times out or errors - // these should update this boundary to the permanent Fallback state instead. - // Mark it as having captured (i.e. suspended). - workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment. - - workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result. - - retryDehydratedSuspenseBoundary.bind(null, current); - registerSuspenseInstanceRetry(); - return null; - } else { - var primaryChildren = nextProps.children; - var primaryChildFragment = mountSuspensePrimaryChildren( - workInProgress, - primaryChildren - ); // Mark the children as hydrating. This is a fast path to know whether this - // tree is part of a hydrating tree. This is used to determine if a child - // node has fully mounted yet, and for scheduling event replaying. - // Conceptually this is similar to Placement in that a new subtree is - // inserted into the React tree here. It just happens to not need DOM - // mutations because it already exists. - - primaryChildFragment.flags |= Hydrating; - return primaryChildFragment; - } - } else { - // This is the second render pass. We already attempted to hydrated, but - // something either suspended or errored. - if (workInProgress.flags & ForceClientRender) { - // Something errored during hydration. Try again without hydrating. - // The error should've already been logged in throwException. - pushPrimaryTreeSuspenseHandler(workInProgress); - workInProgress.flags &= ~ForceClientRender; - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } else if (workInProgress.memoizedState !== null) { - // Something suspended and we should still be in dehydrated mode. - // Leave the existing child in place. - // Push to avoid a mismatch - pushFallbackTreeSuspenseHandler(workInProgress); - workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there - // but the normal suspense pass doesn't. + while (prevSibling.sibling !== oldWorkInProgress) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + prevSibling = prevSibling.sibling; - workInProgress.flags |= DidCapture; - return null; - } else { - // Suspended but we should no longer be in dehydrated mode. - // Therefore we now have to render the fallback. - pushFallbackTreeSuspenseHandler(workInProgress); - var nextPrimaryChildren = nextProps.children; - var nextFallbackChildren = nextProps.fallback; - var fallbackChildFragment = - mountSuspenseFallbackAfterRetryWithoutHydrating( - current, - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - var _primaryChildFragment4 = workInProgress.child; - _primaryChildFragment4.memoizedState = - mountSuspenseOffscreenState(renderLanes); - _primaryChildFragment4.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - return fallbackChildFragment; + if (prevSibling === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Expected to find the previous sibling.'); } - } - } + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function scheduleSuspenseWorkOnFiber(fiber, renderLanes, propagationRoot) { - fiber.lanes = mergeLanes(fiber.lanes, renderLanes); - var alternate = fiber.alternate; - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, renderLanes); - } + prevSibling.sibling = newWorkInProgress; + } // Delete the old fiber and place the new one. + // Since the old fiber is disconnected, we have to schedule it manually. + + + var deletions = returnFiber.deletions; - scheduleContextWorkOnParentPath( - fiber.return, - renderLanes, - propagationRoot - ); + if (deletions === null) { + returnFiber.deletions = [current]; + returnFiber.flags |= ChildDeletion; + } else { + deletions.push(current); } - function propagateSuspenseContextChange( - workInProgress, - firstChild, - renderLanes - ) { - // Mark any Suspense boundaries with fallbacks as having work to do. - // If they were previously forced into fallbacks, they may now be able - // to unblock. - var node = firstChild; + newWorkInProgress.flags |= Placement; // Restart work from the new fiber. - while (node !== null) { - if (node.tag === SuspenseComponent) { - var state = node.memoizedState; + return newWorkInProgress; + } +} - if (state !== null) { - scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); - } - } else if (node.tag === SuspenseListComponent) { - // If the tail is hidden there might not be an Suspense boundaries - // to schedule work on. In this case we have to schedule it on the - // list itself. - // We don't have to traverse to the children of the list since - // the list will propagate the change when it rerenders. - scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } +function checkScheduledUpdateOrContext(current, renderLanes) { + // Before performing an early bailout, we must check if there are pending + // updates or context. + var updateLanes = current.lanes; - if (node === workInProgress) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + if (includesSomeLane(updateLanes, renderLanes)) { + return true; + } // No pending update, but because context is propagated lazily, we need - while (node.sibling === null) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (node.return === null || node.return === workInProgress) { - return; - } + return false; +} - node = node.return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow +function attemptEarlyBailoutIfNoScheduledUpdate(current, workInProgress, renderLanes) { + // This fiber does not have any pending work. Bailout without entering + // the begin phase. There's still some bookkeeping we that needs to be done + // in this optimized path, mostly pushing stuff onto the stack. + switch (workInProgress.tag) { + case HostRoot: + pushHostRootContext(workInProgress); - node.sibling.return = node.return; - node = node.sibling; + { + var cache = current.memoizedState.cache; + pushCacheProvider(workInProgress, cache); } - } + break; - function findLastContentRow(firstChild) { - // This is going to find the last row among these children that is already - // showing content on the screen, as opposed to being in fallback state or - // new. If a row has multiple Suspense boundaries, any of them being in the - // fallback state, counts as the whole row being in a fallback state. - // Note that the "rows" will be workInProgress, but any nested children - // will still be current since we haven't rendered them yet. The mounted - // order may not be the same as the new order. We use the new order. - var row = firstChild; - var lastContentRow = null; + case HostSingleton: + case HostComponent: + pushHostContext(workInProgress); + break; - while (row !== null) { - var currentRow = row.alternate; // New rows can't be content rows. + case ClassComponent: + { + var Component = workInProgress.type; - if (currentRow !== null && findFirstSuspended(currentRow) === null) { - lastContentRow = row; + if (isContextProvider(Component)) { + pushContextProvider(workInProgress); } - row = row.sibling; + break; } - return lastContentRow; - } + case HostPortal: + pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); + break; - function validateRevealOrder(revealOrder) { + case ContextProvider: { - if ( - revealOrder !== undefined && - revealOrder !== "forwards" && - revealOrder !== "backwards" && - revealOrder !== "together" && - !didWarnAboutRevealOrder[revealOrder] - ) { - didWarnAboutRevealOrder[revealOrder] = true; - - if (typeof revealOrder === "string") { - switch (revealOrder.toLowerCase()) { - case "together": - case "forwards": - case "backwards": { - error( - '"%s" is not a valid value for revealOrder on . ' + - 'Use lowercase "%s" instead.', - revealOrder, - revealOrder.toLowerCase() - ); + var newValue = workInProgress.memoizedProps.value; + var context; - break; - } - - case "forward": - case "backward": { - error( - '"%s" is not a valid value for revealOrder on . ' + - 'React uses the -s suffix in the spelling. Use "%ss" instead.', - revealOrder, - revealOrder.toLowerCase() - ); + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; + } - break; - } + pushProvider(workInProgress, context, newValue); + break; + } - default: - error( - '"%s" is not a supported revealOrder on . ' + - 'Did you mean "together", "forwards" or "backwards"?', - revealOrder - ); + case Profiler: + { + // Profiler should only call onRender when one of its descendants actually rendered. + var hasChildWork = includesSomeLane(renderLanes, workInProgress.childLanes); - break; - } - } else { - error( - "%s is not a supported value for revealOrder on . " + - 'Did you mean "together", "forwards" or "backwards"?', - revealOrder - ); - } + if (hasChildWork) { + workInProgress.flags |= Update; } - } - } - function validateTailOptions(tailMode, revealOrder) { - { - if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) { - if (tailMode !== "collapsed" && tailMode !== "hidden") { - didWarnAboutTailOptions[tailMode] = true; - - error( - '"%s" is not a supported value for tail on . ' + - 'Did you mean "collapsed" or "hidden"?', - tailMode - ); - } else if ( - revealOrder !== "forwards" && - revealOrder !== "backwards" - ) { - didWarnAboutTailOptions[tailMode] = true; - - error( - ' is only valid if revealOrder is ' + - '"forwards" or "backwards". ' + - 'Did you mean to specify revealOrder="forwards"?', - tailMode - ); - } + { + // Reset effect durations for the next eventual effect phase. + // These are reset during render to allow the DevTools commit hook a chance to read them, + var stateNode = workInProgress.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; } } - } - function validateSuspenseListNestedChild(childSlot, index) { + break; + + case SuspenseComponent: { - var isAnArray = isArray(childSlot); - var isIterable = - !isAnArray && typeof getIteratorFn(childSlot) === "function"; - - if (isAnArray || isIterable) { - var type = isAnArray ? "array" : "iterable"; - - error( - "A nested %s was passed to row #%s in . Wrap it in " + - "an additional SuspenseList to configure its revealOrder: " + - " ... " + - "{%s} ... " + - "", - type, - index, - type - ); + var state = workInProgress.memoizedState; - return false; - } - } + if (state !== null) { + if (state.dehydrated !== null) { + // We're not going to render the children, so this is just to maintain + // push/pop symmetry + pushPrimaryTreeSuspenseHandler(workInProgress); // We know that this component will suspend again because if it has + // been unsuspended it has committed as a resolved Suspense component. + // If it needs to be retried, it should have work scheduled on it. - return true; - } + workInProgress.flags |= DidCapture; // We should never render the children of a dehydrated boundary until we + // upgrade it. We return null instead of bailoutOnAlreadyFinishedWork. - function validateSuspenseListChildren(children, revealOrder) { - { - if ( - (revealOrder === "forwards" || revealOrder === "backwards") && - children !== undefined && - children !== null && - children !== false - ) { - if (isArray(children)) { - for (var i = 0; i < children.length; i++) { - if (!validateSuspenseListNestedChild(children[i], i)) { - return; - } - } - } else { - var iteratorFn = getIteratorFn(children); + return null; + } // If this boundary is currently timed out, we need to decide + // whether to retry the primary children, or to skip over it and + // go straight to the fallback. Check the priority of the primary + // child fragment. - if (typeof iteratorFn === "function") { - var childrenIterator = iteratorFn.call(children); - if (childrenIterator) { - var step = childrenIterator.next(); - var _i = 0; + var primaryChildFragment = workInProgress.child; + var primaryChildLanes = primaryChildFragment.childLanes; - for (; !step.done; step = childrenIterator.next()) { - if (!validateSuspenseListNestedChild(step.value, _i)) { - return; - } + if (includesSomeLane(renderLanes, primaryChildLanes)) { + // The primary children have pending work. Use the normal path + // to attempt to render the primary children again. + return updateSuspenseComponent(current, workInProgress, renderLanes); + } else { + // The primary child fragment does not have pending work marked + // on it + pushPrimaryTreeSuspenseHandler(workInProgress); // The primary children do not have pending work with sufficient + // priority. Bailout. - _i++; - } - } + var child = bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + + if (child !== null) { + // The fallback children have pending work. Skip over the + // primary children and work on the fallback. + return child.sibling; } else { - error( - 'A single row was passed to a . ' + - "This is not useful since it needs multiple rows. " + - "Did you mean to pass multiple children or an array?", - revealOrder - ); + // Note: We can return `null` here because we already checked + // whether there were nested context consumers, via the call to + // `bailoutOnAlreadyFinishedWork` above. + return null; } } + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); } + + break; } - } - function initSuspenseListRenderState( - workInProgress, - isBackwards, - tail, - lastContentRow, - tailMode - ) { - var renderState = workInProgress.memoizedState; + case SuspenseListComponent: + { + var didSuspendBefore = (current.flags & DidCapture) !== NoFlags$1; - if (renderState === null) { - workInProgress.memoizedState = { - isBackwards: isBackwards, - rendering: null, - renderingStartTime: 0, - last: lastContentRow, - tail: tail, - tailMode: tailMode - }; - } else { - // We can reuse the existing object from previous renders. - renderState.isBackwards = isBackwards; - renderState.rendering = null; - renderState.renderingStartTime = 0; - renderState.last = lastContentRow; - renderState.tail = tail; - renderState.tailMode = tailMode; - } - } // This can end up rendering this component multiple passes. - // The first pass splits the children fibers into two sets. A head and tail. - // We first render the head. If anything is in fallback state, we do another - // pass through beginWork to rerender all children (including the tail) with - // the force suspend context. If the first render didn't have anything in - // in fallback state. Then we render each row in the tail one-by-one. - // That happens in the completeWork phase without going back to beginWork. - - function updateSuspenseListComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; - var revealOrder = nextProps.revealOrder; - var tailMode = nextProps.tail; - var newChildren = nextProps.children; - validateRevealOrder(revealOrder); - validateTailOptions(tailMode, revealOrder); - validateSuspenseListChildren(newChildren, revealOrder); - reconcileChildren(current, workInProgress, newChildren, renderLanes); - var suspenseContext = suspenseStackCursor.current; - var shouldForceFallback = hasSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - - if (shouldForceFallback) { - suspenseContext = setShallowSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - workInProgress.flags |= DidCapture; - } else { - var didSuspendBefore = - current !== null && (current.flags & DidCapture) !== NoFlags$1; + var _hasChildWork = includesSomeLane(renderLanes, workInProgress.childLanes); if (didSuspendBefore) { - // If we previously forced a fallback, we need to schedule work - // on any nested boundaries to let them know to try to render - // again. This is the same as context updating. - propagateSuspenseContextChange( - workInProgress, - workInProgress.child, - renderLanes - ); - } - - suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); - } - - pushSuspenseListContext(workInProgress, suspenseContext); - - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - // In legacy mode, SuspenseList doesn't work so we just - // use make it a noop by treating it as the default revealOrder. - workInProgress.memoizedState = null; - } else { - switch (revealOrder) { - case "forwards": { - var lastContentRow = findLastContentRow(workInProgress.child); - var tail; - - if (lastContentRow === null) { - // The whole list is part of the tail. - // TODO: We could fast path by just rendering the tail now. - tail = workInProgress.child; - workInProgress.child = null; - } else { - // Disconnect the tail rows after the content row. - // We're going to render them separately later. - tail = lastContentRow.sibling; - lastContentRow.sibling = null; - } + if (_hasChildWork) { + // If something was in fallback state last time, and we have all the + // same children then we're still in progressive loading state. + // Something might get unblocked by state updates or retries in the + // tree which will affect the tail. So we need to use the normal + // path to compute the correct tail. + return updateSuspenseListComponent(current, workInProgress, renderLanes); + } // If none of the children had any work, that means that none of + // them got retried so they'll still be blocked in the same way + // as before. We can fast bail out. - initSuspenseListRenderState( - workInProgress, - false, // isBackwards - tail, - lastContentRow, - tailMode - ); - break; - } - case "backwards": { - // We're going to find the first row that has existing content. - // At the same time we're going to reverse the list of everything - // we pass in the meantime. That's going to be our tail in reverse - // order. - var _tail = null; - var row = workInProgress.child; - workInProgress.child = null; + workInProgress.flags |= DidCapture; + } // If nothing suspended before and we're rendering the same children, + // then the tail doesn't matter. Anything new that suspends will work + // in the "together" mode, so we can continue from the state we had. - while (row !== null) { - var currentRow = row.alternate; // New rows can't be content rows. - if ( - currentRow !== null && - findFirstSuspended(currentRow) === null - ) { - // This is the beginning of the main content. - workInProgress.child = row; - break; - } + var renderState = workInProgress.memoizedState; - var nextRow = row.sibling; - row.sibling = _tail; - _tail = row; - row = nextRow; - } // TODO: If workInProgress.child is null, we can continue on the tail immediately. - - initSuspenseListRenderState( - workInProgress, - true, // isBackwards - _tail, - null, // last - tailMode - ); - break; - } + if (renderState !== null) { + // Reset to the "together" mode in case we've started a different + // update in the past but didn't complete it. + renderState.rendering = null; + renderState.tail = null; + renderState.lastEffect = null; + } - case "together": { - initSuspenseListRenderState( - workInProgress, - false, // isBackwards - null, // tail - null, // last - undefined - ); - break; - } + pushSuspenseListContext(workInProgress, suspenseStackCursor.current); - default: { - // The default reveal order is the same as not having - // a boundary. - workInProgress.memoizedState = null; - } + if (_hasChildWork) { + break; + } else { + // If none of the children had any work, that means that none of + // them got retried so they'll still be blocked in the same way + // as before. We can fast bail out. + return null; } } - return workInProgress.child; - } + case OffscreenComponent: + case LegacyHiddenComponent: + { + // Need to check if the tree still needs to be deferred. This is + // almost identical to the logic used in the normal update path, + // so we'll just enter that. The only difference is we'll bail out + // at the next level instead of this one, because the child props + // have not changed. Which is fine. + // TODO: Probably should refactor `beginWork` to split the bailout + // path from the normal path. I'm tempted to do a labeled break here + // but I won't :) + workInProgress.lanes = NoLanes; + return updateOffscreenComponent(current, workInProgress, renderLanes); + } - function updatePortalComponent(current, workInProgress, renderLanes) { - pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); - var nextChildren = workInProgress.pendingProps; - - if (current === null) { - // Portals are special because we don't append the children during mount - // but at commit. Therefore we need to track insertions which the normal - // flow doesn't do during mount. This doesn't happen at the root because - // the root always starts with a "current" with a null child. - // TODO: Consider unifying this with how the root works. - workInProgress.child = reconcileChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } else { - reconcileChildren(current, workInProgress, nextChildren, renderLanes); + case CacheComponent: + { + { + var _cache = current.memoizedState.cache; + pushCacheProvider(workInProgress, _cache); + } + + break; } + } + + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); +} - return workInProgress.child; +function beginWork(current, workInProgress, renderLanes) { + { + if (workInProgress._debugNeedsRemount && current !== null) { + // This will restart the begin phase with a new fiber. + return remountFiber(current, workInProgress, createFiberFromTypeAndProps(workInProgress.type, workInProgress.key, workInProgress.pendingProps, workInProgress._debugOwner || null, workInProgress.mode, workInProgress.lanes)); } + } - var hasWarnedAboutUsingNoValuePropOnContextProvider = false; + if (current !== null) { + var oldProps = current.memoizedProps; + var newProps = workInProgress.pendingProps; - function updateContextProvider(current, workInProgress, renderLanes) { - var context; + if (oldProps !== newProps || hasContextChanged() || ( // Force a re-render if the implementation changed due to hot reload: + workInProgress.type !== current.type )) { + // If props or context changed, mark the fiber as having performed work. + // This may be unset if the props are determined to be equal later (memo). + didReceiveUpdate = true; + } else { + // Neither props nor legacy context changes. Check if there's a pending + // update or context change. + var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext(current, renderLanes); + + if (!hasScheduledUpdateOrContext && // If this is the second pass of an error or suspense boundary, there + // may not be work scheduled on `current`, so we check for this flag. + (workInProgress.flags & DidCapture) === NoFlags$1) { + // No pending updates or context. Bail out now. + didReceiveUpdate = false; + return attemptEarlyBailoutIfNoScheduledUpdate(current, workInProgress, renderLanes); + } - if (enableRenderableContext) { - context = workInProgress.type; + if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { + // This is a special case that only exists for legacy mode. + // See https://github.com/facebook/react/pull/19216. + didReceiveUpdate = true; } else { - context = workInProgress.type._context; + // An update was scheduled on this fiber, but there are no new props + // nor legacy context. Set this to false. If an update queue or context + // consumer produces a changed value, it will set this to true. Otherwise, + // the component will assume the children have not changed and bail out. + didReceiveUpdate = false; } + } + } else { + didReceiveUpdate = false; + } // Before entering the begin phase, clear pending update priority. + // TODO: This assumes that we're about to evaluate the component and process + // the update queue. However, there's an exception: SimpleMemoComponent + // sometimes bails out later in the begin phase. This indicates that we should + // move this assignment out of the common path and into each branch. - var newProps = workInProgress.pendingProps; - var oldProps = workInProgress.memoizedProps; - var newValue = newProps.value; - { - if (!("value" in newProps)) { - if (!hasWarnedAboutUsingNoValuePropOnContextProvider) { - hasWarnedAboutUsingNoValuePropOnContextProvider = true; + workInProgress.lanes = NoLanes; - error( - "The `value` prop is required for the ``. Did you misspell it or forget to pass it?" - ); - } - } + switch (workInProgress.tag) { + case LazyComponent: + { + var elementType = workInProgress.elementType; + return mountLazyComponent(current, workInProgress, elementType, renderLanes); } - pushProvider(workInProgress, context, newValue); - + case FunctionComponent: { - if (oldProps !== null) { - var oldValue = oldProps.value; - - if (objectIs(oldValue, newValue)) { - // No change. Bailout early if children are the same. - if ( - oldProps.children === newProps.children && - !hasContextChanged() - ) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } - } else { - // The context value changed. Search for matching consumers and schedule - // them to update. - propagateContextChange(workInProgress, context, renderLanes); - } - } + var Component = workInProgress.type; + var unresolvedProps = workInProgress.pendingProps; + var resolvedProps = disableDefaultPropsExceptForClasses || workInProgress.elementType === Component ? unresolvedProps : resolveDefaultPropsOnNonClassComponent(Component, unresolvedProps); + return updateFunctionComponent(current, workInProgress, Component, resolvedProps, renderLanes); } - var newChildren = newProps.children; - reconcileChildren(current, workInProgress, newChildren, renderLanes); - return workInProgress.child; - } - - function updateContextConsumer(current, workInProgress, renderLanes) { - var context; + case ClassComponent: + { + var _Component = workInProgress.type; + var _unresolvedProps = workInProgress.pendingProps; - if (enableRenderableContext) { - var consumerType = workInProgress.type; - context = consumerType._context; - } else { - context = workInProgress.type; + var _resolvedProps4 = resolveClassComponentProps(_Component, _unresolvedProps, workInProgress.elementType === _Component); - { - if (context._context !== undefined) { - context = context._context; - } - } + return updateClassComponent(current, workInProgress, _Component, _resolvedProps4, renderLanes); } - var newProps = workInProgress.pendingProps; - var render = newProps.children; + case HostRoot: + return updateHostRoot(current, workInProgress, renderLanes); - { - if (typeof render !== "function") { - error( - "A context consumer was rendered with multiple children, or a child " + - "that isn't a function. A context consumer expects a single child " + - "that is a function. If you did pass a function, make sure there " + - "is no trailing or leading whitespace around it." - ); - } - } + case HostHoistable: - prepareToReadContext(workInProgress, renderLanes); - var newValue = readContext(context); + // Fall through - { - markComponentRenderStarted(workInProgress); - } + case HostSingleton: - var newChildren; + // Fall through - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - newChildren = render(newValue); - setIsRendering(false); - } + case HostComponent: + return updateHostComponent$1(current, workInProgress, renderLanes); - { - markComponentRenderStopped(); - } // React DevTools reads this flag. + case HostText: + return updateHostText$1(); - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, newChildren, renderLanes); - return workInProgress.child; - } + case SuspenseComponent: + return updateSuspenseComponent(current, workInProgress, renderLanes); - function markWorkInProgressReceivedUpdate() { - didReceiveUpdate = true; - } + case HostPortal: + return updatePortalComponent(current, workInProgress, renderLanes); - function resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress) { - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - if (current !== null) { - // A lazy component only mounts if it suspended inside a non- - // concurrent tree, in an inconsistent state. We want to treat it like - // a new mount, even though an empty version of it already committed. - // Disconnect the alternate pointers. - current.alternate = null; - workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect + case ForwardRef: + { + var type = workInProgress.type; + var _unresolvedProps2 = workInProgress.pendingProps; - workInProgress.flags |= Placement; - } - } - } + var _resolvedProps5 = disableDefaultPropsExceptForClasses || workInProgress.elementType === type ? _unresolvedProps2 : resolveDefaultPropsOnNonClassComponent(type, _unresolvedProps2); - function bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ) { - if (current !== null) { - // Reuse previous dependencies - workInProgress.dependencies = current.dependencies; + return updateForwardRef(current, workInProgress, type, _resolvedProps5, renderLanes); } - { - // Don't update "base" render times for bailouts. - stopProfilerTimerIfRunning(); - } + case Fragment: + return updateFragment(current, workInProgress, renderLanes); - markSkippedUpdateLanes(workInProgress.lanes); // Check if the children have any pending work. + case Mode: + return updateMode(current, workInProgress, renderLanes); - if (!includesSomeLane(renderLanes, workInProgress.childLanes)) { - // The children don't have any work either. We can skip them. - // TODO: Once we add back resuming, we should check if the children are - // a work-in-progress set. If so, we need to transfer their effects. - { - return null; - } - } // This fiber doesn't have work, but its subtree does. Clone the child - // fibers and continue. + case Profiler: + return updateProfiler(current, workInProgress, renderLanes); - cloneChildFibers(current, workInProgress); - return workInProgress.child; - } + case ContextProvider: + return updateContextProvider(current, workInProgress, renderLanes); - function remountFiber(current, oldWorkInProgress, newWorkInProgress) { - { - var returnFiber = oldWorkInProgress.return; + case ContextConsumer: + return updateContextConsumer(current, workInProgress, renderLanes); - if (returnFiber === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Cannot swap the root fiber."); - } // Disconnect from the old current. - // It will get deleted. + case MemoComponent: + { + var _type = workInProgress.type; + var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props. - current.alternate = null; - oldWorkInProgress.alternate = null; // Connect to the new tree. + var _resolvedProps6 = disableDefaultPropsExceptForClasses ? _unresolvedProps3 : resolveDefaultPropsOnNonClassComponent(_type, _unresolvedProps3); - newWorkInProgress.index = oldWorkInProgress.index; - newWorkInProgress.sibling = oldWorkInProgress.sibling; - newWorkInProgress.return = oldWorkInProgress.return; - newWorkInProgress.ref = oldWorkInProgress.ref; + _resolvedProps6 = disableDefaultPropsExceptForClasses ? _resolvedProps6 : resolveDefaultPropsOnNonClassComponent(_type.type, _resolvedProps6); + return updateMemoComponent(current, workInProgress, _type, _resolvedProps6, renderLanes); + } - { - newWorkInProgress._debugInfo = oldWorkInProgress._debugInfo; - } // Replace the child/sibling pointers above it. + case SimpleMemoComponent: + { + return updateSimpleMemoComponent(current, workInProgress, workInProgress.type, workInProgress.pendingProps, renderLanes); + } - if (oldWorkInProgress === returnFiber.child) { - returnFiber.child = newWorkInProgress; - } else { - var prevSibling = returnFiber.child; + case IncompleteClassComponent: + { - if (prevSibling === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Expected parent to have a child."); - } // $FlowFixMe[incompatible-use] found when upgrading Flow + var _Component2 = workInProgress.type; + var _unresolvedProps4 = workInProgress.pendingProps; - while (prevSibling.sibling !== oldWorkInProgress) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - prevSibling = prevSibling.sibling; + var _resolvedProps7 = resolveClassComponentProps(_Component2, _unresolvedProps4, workInProgress.elementType === _Component2); - if (prevSibling === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Expected to find the previous sibling."); - } - } // $FlowFixMe[incompatible-use] found when upgrading Flow + return mountIncompleteClassComponent(current, workInProgress, _Component2, _resolvedProps7, renderLanes); + } - prevSibling.sibling = newWorkInProgress; - } // Delete the old fiber and place the new one. - // Since the old fiber is disconnected, we have to schedule it manually. + case IncompleteFunctionComponent: + { - var deletions = returnFiber.deletions; + var _Component3 = workInProgress.type; + var _unresolvedProps5 = workInProgress.pendingProps; - if (deletions === null) { - returnFiber.deletions = [current]; - returnFiber.flags |= ChildDeletion; - } else { - deletions.push(current); - } + var _resolvedProps8 = resolveClassComponentProps(_Component3, _unresolvedProps5, workInProgress.elementType === _Component3); - newWorkInProgress.flags |= Placement; // Restart work from the new fiber. + return mountIncompleteFunctionComponent(current, workInProgress, _Component3, _resolvedProps8, renderLanes); + } - return newWorkInProgress; + case SuspenseListComponent: + { + return updateSuspenseListComponent(current, workInProgress, renderLanes); } - } - function checkScheduledUpdateOrContext(current, renderLanes) { - // Before performing an early bailout, we must check if there are pending - // updates or context. - var updateLanes = current.lanes; + case ScopeComponent: + { - if (includesSomeLane(updateLanes, renderLanes)) { - return true; - } // No pending update, but because context is propagated lazily, we need + break; + } - return false; - } + case OffscreenComponent: + { + return updateOffscreenComponent(current, workInProgress, renderLanes); + } - function attemptEarlyBailoutIfNoScheduledUpdate( - current, - workInProgress, - renderLanes - ) { - // This fiber does not have any pending work. Bailout without entering - // the begin phase. There's still some bookkeeping we that needs to be done - // in this optimized path, mostly pushing stuff onto the stack. - switch (workInProgress.tag) { - case HostRoot: - pushHostRootContext(workInProgress); + case LegacyHiddenComponent: + { - { - var cache = current.memoizedState.cache; - pushCacheProvider(workInProgress, cache); - } - break; + break; + } - case HostSingleton: - case HostComponent: - pushHostContext(workInProgress); - break; + case CacheComponent: + { + { + return updateCacheComponent(current, workInProgress, renderLanes); + } + } + } - case ClassComponent: { - var Component = workInProgress.type; + throw new Error("Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + 'React. Please file an issue.'); +} - if (isContextProvider(Component)) { - pushContextProvider(workInProgress); - } +var valueCursor = createCursor(null); - break; - } +var renderer2CursorDEV; - case HostPortal: - pushHostContainer( - workInProgress, - workInProgress.stateNode.containerInfo - ); - break; +{ + renderer2CursorDEV = createCursor(null); +} - case ContextProvider: { - var newValue = workInProgress.memoizedProps.value; - var context; +var rendererSigil; - if (enableRenderableContext) { - context = workInProgress.type; - } else { - context = workInProgress.type._context; - } +{ + // Use this to detect multiple renderers using the same context + rendererSigil = {}; +} - pushProvider(workInProgress, context, newValue); - break; - } +var currentlyRenderingFiber = null; +var lastContextDependency = null; +var lastFullyObservedContext = null; +var isDisallowedContextReadInDEV = false; +function resetContextDependencies() { + // This is called right before React yields execution, to ensure `readContext` + // cannot be called outside the render phase. + currentlyRenderingFiber = null; + lastContextDependency = null; + lastFullyObservedContext = null; + + { + isDisallowedContextReadInDEV = false; + } +} +function enterDisallowedContextReadInDEV() { + { + isDisallowedContextReadInDEV = true; + } +} +function exitDisallowedContextReadInDEV() { + { + isDisallowedContextReadInDEV = false; + } +} +function pushProvider(providerFiber, context, nextValue) { + { + push(valueCursor, context._currentValue2, providerFiber); + context._currentValue2 = nextValue; - case Profiler: - { - // Profiler should only call onRender when one of its descendants actually rendered. - var hasChildWork = includesSomeLane( - renderLanes, - workInProgress.childLanes - ); + { + push(renderer2CursorDEV, context._currentRenderer2, providerFiber); - if (hasChildWork) { - workInProgress.flags |= Update; - } + if (context._currentRenderer2 !== undefined && context._currentRenderer2 !== null && context._currentRenderer2 !== rendererSigil) { + error('Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.'); + } - { - // Reset effect durations for the next eventual effect phase. - // These are reset during render to allow the DevTools commit hook a chance to read them, - var stateNode = workInProgress.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } - } + context._currentRenderer2 = rendererSigil; + } + } +} +function popProvider(context, providerFiber) { + var currentValue = valueCursor.current; - break; + { + context._currentValue2 = currentValue; - case SuspenseComponent: { - var state = workInProgress.memoizedState; + { + var currentRenderer2 = renderer2CursorDEV.current; + pop(renderer2CursorDEV, providerFiber); + context._currentRenderer2 = currentRenderer2; + } + } - if (state !== null) { - if (state.dehydrated !== null) { - // We're not going to render the children, so this is just to maintain - // push/pop symmetry - pushPrimaryTreeSuspenseHandler(workInProgress); // We know that this component will suspend again because if it has - // been unsuspended it has committed as a resolved Suspense component. - // If it needs to be retried, it should have work scheduled on it. + pop(valueCursor, providerFiber); +} +function scheduleContextWorkOnParentPath(parent, renderLanes, propagationRoot) { + // Update the child lanes of all the ancestors, including the alternates. + var node = parent; - workInProgress.flags |= DidCapture; // We should never render the children of a dehydrated boundary until we - // upgrade it. We return null instead of bailoutOnAlreadyFinishedWork. + while (node !== null) { + var alternate = node.alternate; - return null; - } // If this boundary is currently timed out, we need to decide - // whether to retry the primary children, or to skip over it and - // go straight to the fallback. Check the priority of the primary - // child fragment. + if (!isSubsetOfLanes(node.childLanes, renderLanes)) { + node.childLanes = mergeLanes(node.childLanes, renderLanes); - var primaryChildFragment = workInProgress.child; - var primaryChildLanes = primaryChildFragment.childLanes; - - if (includesSomeLane(renderLanes, primaryChildLanes)) { - // The primary children have pending work. Use the normal path - // to attempt to render the primary children again. - return updateSuspenseComponent( - current, - workInProgress, - renderLanes - ); - } else { - // The primary child fragment does not have pending work marked - // on it - pushPrimaryTreeSuspenseHandler(workInProgress); // The primary children do not have pending work with sufficient - // priority. Bailout. - - var child = bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - - if (child !== null) { - // The fallback children have pending work. Skip over the - // primary children and work on the fallback. - return child.sibling; - } else { - // Note: We can return `null` here because we already checked - // whether there were nested context consumers, via the call to - // `bailoutOnAlreadyFinishedWork` above. - return null; - } - } - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - } + if (alternate !== null) { + alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); + } + } else if (alternate !== null && !isSubsetOfLanes(alternate.childLanes, renderLanes)) { + alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); + } else ; - break; - } + if (node === propagationRoot) { + break; + } - case SuspenseListComponent: { - var didSuspendBefore = (current.flags & DidCapture) !== NoFlags$1; - - var _hasChildWork = includesSomeLane( - renderLanes, - workInProgress.childLanes - ); - - if (didSuspendBefore) { - if (_hasChildWork) { - // If something was in fallback state last time, and we have all the - // same children then we're still in progressive loading state. - // Something might get unblocked by state updates or retries in the - // tree which will affect the tail. So we need to use the normal - // path to compute the correct tail. - return updateSuspenseListComponent( - current, - workInProgress, - renderLanes - ); - } // If none of the children had any work, that means that none of - // them got retried so they'll still be blocked in the same way - // as before. We can fast bail out. - - workInProgress.flags |= DidCapture; - } // If nothing suspended before and we're rendering the same children, - // then the tail doesn't matter. Anything new that suspends will work - // in the "together" mode, so we can continue from the state we had. - - var renderState = workInProgress.memoizedState; - - if (renderState !== null) { - // Reset to the "together" mode in case we've started a different - // update in the past but didn't complete it. - renderState.rendering = null; - renderState.tail = null; - renderState.lastEffect = null; - } + node = node.return; + } - pushSuspenseListContext(workInProgress, suspenseStackCursor.current); + { + if (node !== propagationRoot) { + error('Expected to find the propagation root when scheduling context work. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } + } +} +function propagateContextChange(workInProgress, context, renderLanes) { + { + propagateContextChange_eager(workInProgress, context, renderLanes); + } +} - if (_hasChildWork) { - break; - } else { - // If none of the children had any work, that means that none of - // them got retried so they'll still be blocked in the same way - // as before. We can fast bail out. - return null; - } - } +function propagateContextChange_eager(workInProgress, context, renderLanes) { - case OffscreenComponent: - case LegacyHiddenComponent: { - // Need to check if the tree still needs to be deferred. This is - // almost identical to the logic used in the normal update path, - // so we'll just enter that. The only difference is we'll bail out - // at the next level instead of this one, because the child props - // have not changed. Which is fine. - // TODO: Probably should refactor `beginWork` to split the bailout - // path from the normal path. I'm tempted to do a labeled break here - // but I won't :) - workInProgress.lanes = NoLanes; - return updateOffscreenComponent(current, workInProgress, renderLanes); - } + var fiber = workInProgress.child; - case CacheComponent: { - { - var _cache = current.memoizedState.cache; - pushCacheProvider(workInProgress, _cache); - } + if (fiber !== null) { + // Set the return pointer of the child to the work-in-progress fiber. + fiber.return = workInProgress; + } - break; - } - } + while (fiber !== null) { + var nextFiber = void 0; // Visit this fiber. - return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); - } + var list = fiber.dependencies; - function beginWork(current, workInProgress, renderLanes) { - { - if (workInProgress._debugNeedsRemount && current !== null) { - // This will restart the begin phase with a new fiber. - return remountFiber( - current, - workInProgress, - createFiberFromTypeAndProps( - workInProgress.type, - workInProgress.key, - workInProgress.pendingProps, - workInProgress._debugOwner || null, - workInProgress.mode, - workInProgress.lanes - ) - ); - } - } + if (list !== null) { + nextFiber = fiber.child; + var dependency = list.firstContext; - if (current !== null) { - var oldProps = current.memoizedProps; - var newProps = workInProgress.pendingProps; - - if ( - oldProps !== newProps || - hasContextChanged() || // Force a re-render if the implementation changed due to hot reload: - workInProgress.type !== current.type - ) { - // If props or context changed, mark the fiber as having performed work. - // This may be unset if the props are determined to be equal later (memo). - didReceiveUpdate = true; - } else { - // Neither props nor legacy context changes. Check if there's a pending - // update or context change. - var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( - current, - renderLanes - ); - - if ( - !hasScheduledUpdateOrContext && // If this is the second pass of an error or suspense boundary, there - // may not be work scheduled on `current`, so we check for this flag. - (workInProgress.flags & DidCapture) === NoFlags$1 - ) { - // No pending updates or context. Bail out now. - didReceiveUpdate = false; - return attemptEarlyBailoutIfNoScheduledUpdate( - current, - workInProgress, - renderLanes - ); - } + while (dependency !== null) { + // Check if the context matches. + if (dependency.context === context) { + // Match! Schedule an update on this fiber. + if (fiber.tag === ClassComponent) { + // Schedule a force update on the work-in-progress. + var lane = pickArbitraryLane(renderLanes); + var update = createUpdate(lane); + update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the + // update to the current fiber, too, which means it will persist even if + // this render is thrown away. Since it's a race condition, not sure it's + // worth fixing. + // Inlined `enqueueUpdate` to remove interleaved update check + + var updateQueue = fiber.updateQueue; + + if (updateQueue === null) ; else { + var sharedQueue = updateQueue.shared; + var pending = sharedQueue.pending; + + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } - if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { - // This is a special case that only exists for legacy mode. - // See https://github.com/facebook/react/pull/19216. - didReceiveUpdate = true; - } else { - // An update was scheduled on this fiber, but there are no new props - // nor legacy context. Set this to false. If an update queue or context - // consumer produces a changed value, it will set this to true. Otherwise, - // the component will assume the children have not changed and bail out. - didReceiveUpdate = false; + sharedQueue.pending = update; + } } - } - } else { - didReceiveUpdate = false; - } // Before entering the begin phase, clear pending update priority. - // TODO: This assumes that we're about to evaluate the component and process - // the update queue. However, there's an exception: SimpleMemoComponent - // sometimes bails out later in the begin phase. This indicates that we should - // move this assignment out of the common path and into each branch. - - workInProgress.lanes = NoLanes; - - switch (workInProgress.tag) { - case LazyComponent: { - var elementType = workInProgress.elementType; - return mountLazyComponent( - current, - workInProgress, - elementType, - renderLanes - ); - } - - case FunctionComponent: { - var Component = workInProgress.type; - var unresolvedProps = workInProgress.pendingProps; - var resolvedProps = - disableDefaultPropsExceptForClasses || - workInProgress.elementType === Component - ? unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - Component, - unresolvedProps - ); - return updateFunctionComponent( - current, - workInProgress, - Component, - resolvedProps, - renderLanes - ); - } - - case ClassComponent: { - var _Component = workInProgress.type; - var _unresolvedProps = workInProgress.pendingProps; - - var _resolvedProps4 = resolveClassComponentProps( - _Component, - _unresolvedProps, - workInProgress.elementType === _Component - ); - - return updateClassComponent( - current, - workInProgress, - _Component, - _resolvedProps4, - renderLanes - ); - } - case HostRoot: - return updateHostRoot(current, workInProgress, renderLanes); - - case HostHoistable: + fiber.lanes = mergeLanes(fiber.lanes, renderLanes); + var alternate = fiber.alternate; - // Fall through - - case HostSingleton: + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, renderLanes); + } - // Fall through + scheduleContextWorkOnParentPath(fiber.return, renderLanes, workInProgress); // Mark the updated lanes on the list, too. - case HostComponent: - return updateHostComponent$1(current, workInProgress, renderLanes); + list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the + // dependency list. - case HostText: - return updateHostText$1(); + break; + } - case SuspenseComponent: - return updateSuspenseComponent(current, workInProgress, renderLanes); + dependency = dependency.next; + } + } else if (fiber.tag === ContextProvider) { + // Don't scan deeper if this is a matching provider + nextFiber = fiber.type === workInProgress.type ? null : fiber.child; + } else if (fiber.tag === DehydratedFragment) { + // If a dehydrated suspense boundary is in this subtree, we don't know + // if it will have any context consumers in it. The best we can do is + // mark it as having updates. + var parentSuspense = fiber.return; - case HostPortal: - return updatePortalComponent(current, workInProgress, renderLanes); + if (parentSuspense === null) { + throw new Error('We just came from a parent so we must have had a parent. This is a bug in React.'); + } - case ForwardRef: { - var type = workInProgress.type; - var _unresolvedProps2 = workInProgress.pendingProps; + parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes); + var _alternate = parentSuspense.alternate; - var _resolvedProps5 = - disableDefaultPropsExceptForClasses || - workInProgress.elementType === type - ? _unresolvedProps2 - : resolveDefaultPropsOnNonClassComponent(type, _unresolvedProps2); + if (_alternate !== null) { + _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes); + } // This is intentionally passing this fiber as the parent + // because we want to schedule this fiber as having work + // on its children. We'll use the childLanes on + // this fiber to indicate that a context has changed. - return updateForwardRef( - current, - workInProgress, - type, - _resolvedProps5, - renderLanes - ); - } - case Fragment: - return updateFragment(current, workInProgress, renderLanes); + scheduleContextWorkOnParentPath(parentSuspense, renderLanes, workInProgress); + nextFiber = fiber.sibling; + } else { + // Traverse down. + nextFiber = fiber.child; + } - case Mode: - return updateMode(current, workInProgress, renderLanes); + if (nextFiber !== null) { + // Set the return pointer of the child to the work-in-progress fiber. + nextFiber.return = fiber; + } else { + // No child. Traverse to next sibling. + nextFiber = fiber; - case Profiler: - return updateProfiler(current, workInProgress, renderLanes); - - case ContextProvider: - return updateContextProvider(current, workInProgress, renderLanes); - - case ContextConsumer: - return updateContextConsumer(current, workInProgress, renderLanes); - - case MemoComponent: { - var _type = workInProgress.type; - var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props. - - var _resolvedProps6 = disableDefaultPropsExceptForClasses - ? _unresolvedProps3 - : resolveDefaultPropsOnNonClassComponent(_type, _unresolvedProps3); - - _resolvedProps6 = disableDefaultPropsExceptForClasses - ? _resolvedProps6 - : resolveDefaultPropsOnNonClassComponent( - _type.type, - _resolvedProps6 - ); - return updateMemoComponent( - current, - workInProgress, - _type, - _resolvedProps6, - renderLanes - ); - } - - case SimpleMemoComponent: { - return updateSimpleMemoComponent( - current, - workInProgress, - workInProgress.type, - workInProgress.pendingProps, - renderLanes - ); - } - - case IncompleteClassComponent: { - var _Component2 = workInProgress.type; - var _unresolvedProps4 = workInProgress.pendingProps; - - var _resolvedProps7 = resolveClassComponentProps( - _Component2, - _unresolvedProps4, - workInProgress.elementType === _Component2 - ); - - return mountIncompleteClassComponent( - current, - workInProgress, - _Component2, - _resolvedProps7, - renderLanes - ); - } - - case IncompleteFunctionComponent: { - var _Component3 = workInProgress.type; - var _unresolvedProps5 = workInProgress.pendingProps; - - var _resolvedProps8 = resolveClassComponentProps( - _Component3, - _unresolvedProps5, - workInProgress.elementType === _Component3 - ); - - return mountIncompleteFunctionComponent( - current, - workInProgress, - _Component3, - _resolvedProps8, - renderLanes - ); - } - - case SuspenseListComponent: { - return updateSuspenseListComponent( - current, - workInProgress, - renderLanes - ); - } - - case ScopeComponent: { + while (nextFiber !== null) { + if (nextFiber === workInProgress) { + // We're back to the root of this subtree. Exit. + nextFiber = null; break; } - case OffscreenComponent: { - return updateOffscreenComponent(current, workInProgress, renderLanes); - } + var sibling = nextFiber.sibling; - case LegacyHiddenComponent: { + if (sibling !== null) { + // Set the return pointer of the sibling to the work-in-progress fiber. + sibling.return = nextFiber.return; + nextFiber = sibling; break; - } + } // No more siblings. Traverse up. - case CacheComponent: { - { - return updateCacheComponent(current, workInProgress, renderLanes); - } - } - } - throw new Error( - "Unknown unit of work tag (" + - workInProgress.tag + - "). This error is likely caused by a bug in " + - "React. Please file an issue." - ); + nextFiber = nextFiber.return; + } } - var valueCursor = createCursor(null); - - var renderer2CursorDEV; + fiber = nextFiber; + } +} +function prepareToReadContext(workInProgress, renderLanes) { + currentlyRenderingFiber = workInProgress; + lastContextDependency = null; + lastFullyObservedContext = null; + var dependencies = workInProgress.dependencies; + if (dependencies !== null) { { - renderer2CursorDEV = createCursor(null); - } + var firstContext = dependencies.firstContext; - var rendererSigil; - - { - // Use this to detect multiple renderers using the same context - rendererSigil = {}; - } + if (firstContext !== null) { + if (includesSomeLane(dependencies.lanes, renderLanes)) { + // Context list has a pending update. Mark that this fiber performed work. + markWorkInProgressReceivedUpdate(); + } // Reset the work-in-progress list - var currentlyRenderingFiber = null; - var lastContextDependency = null; - var lastFullyObservedContext = null; - var isDisallowedContextReadInDEV = false; - function resetContextDependencies() { - // This is called right before React yields execution, to ensure `readContext` - // cannot be called outside the render phase. - currentlyRenderingFiber = null; - lastContextDependency = null; - lastFullyObservedContext = null; - { - isDisallowedContextReadInDEV = false; - } - } - function enterDisallowedContextReadInDEV() { - { - isDisallowedContextReadInDEV = true; + dependencies.firstContext = null; } } - function exitDisallowedContextReadInDEV() { - { - isDisallowedContextReadInDEV = false; - } + } +} +function readContext(context) { + { + // This warning would fire if you read context inside a Hook like useMemo. + // Unlike the class check below, it's not enforced in production for perf. + if (isDisallowedContextReadInDEV) { + error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); } - function pushProvider(providerFiber, context, nextValue) { - { - push(valueCursor, context._currentValue2, providerFiber); - context._currentValue2 = nextValue; + } - { - push(renderer2CursorDEV, context._currentRenderer2, providerFiber); - - if ( - context._currentRenderer2 !== undefined && - context._currentRenderer2 !== null && - context._currentRenderer2 !== rendererSigil - ) { - error( - "Detected multiple renderers concurrently rendering the " + - "same context provider. This is currently unsupported." - ); - } + return readContextForConsumer(currentlyRenderingFiber, context); +} +function readContextDuringReconciliation(consumer, context, renderLanes) { + if (currentlyRenderingFiber === null) { + prepareToReadContext(consumer, renderLanes); + } - context._currentRenderer2 = rendererSigil; - } - } - } - function popProvider(context, providerFiber) { - var currentValue = valueCursor.current; + return readContextForConsumer(consumer, context); +} - { - context._currentValue2 = currentValue; +function readContextForConsumer(consumer, context) { + var value = context._currentValue2; - { - var currentRenderer2 = renderer2CursorDEV.current; - pop(renderer2CursorDEV, providerFiber); - context._currentRenderer2 = currentRenderer2; - } - } + if (lastFullyObservedContext === context) ; else { + var contextItem = { + context: context, + memoizedValue: value, + next: null + }; - pop(valueCursor, providerFiber); - } - function scheduleContextWorkOnParentPath( - parent, - renderLanes, - propagationRoot - ) { - // Update the child lanes of all the ancestors, including the alternates. - var node = parent; + if (lastContextDependency === null) { + if (consumer === null) { + throw new Error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + } // This is the first dependency for this component. Create a new list. - while (node !== null) { - var alternate = node.alternate; - if (!isSubsetOfLanes(node.childLanes, renderLanes)) { - node.childLanes = mergeLanes(node.childLanes, renderLanes); + lastContextDependency = contextItem; + consumer.dependencies = { + lanes: NoLanes, + firstContext: contextItem + }; + } else { + // Append a new context item. + lastContextDependency = lastContextDependency.next = contextItem; + } + } - if (alternate !== null) { - alternate.childLanes = mergeLanes( - alternate.childLanes, - renderLanes - ); - } - } else if ( - alternate !== null && - !isSubsetOfLanes(alternate.childLanes, renderLanes) - ) { - alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); - } else; - - if (node === propagationRoot) { - break; - } + return value; +} - node = node.return; - } +// replace it with a lightweight shim that only has the features we use. - { - if (node !== propagationRoot) { - error( - "Expected to find the propagation root when scheduling context work. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } - } - function propagateContextChange(workInProgress, context, renderLanes) { - { - propagateContextChange_eager(workInProgress, context, renderLanes); - } +var AbortControllerLocal = typeof AbortController !== 'undefined' ? AbortController : // $FlowFixMe[missing-this-annot] +// $FlowFixMe[prop-missing] +function AbortControllerShim() { + var listeners = []; + var signal = this.signal = { + aborted: false, + addEventListener: function (type, listener) { + listeners.push(listener); } + }; - function propagateContextChange_eager( - workInProgress, - context, - renderLanes - ) { - var fiber = workInProgress.child; + this.abort = function () { + signal.aborted = true; + listeners.forEach(function (listener) { + return listener(); + }); + }; +} ; // Intentionally not named imports because Rollup would +// use dynamic dispatch for CommonJS interop named imports. + +var scheduleCallback$1 = Scheduler.unstable_scheduleCallback, + NormalPriority = Scheduler.unstable_NormalPriority; +var CacheContext = { + $$typeof: REACT_CONTEXT_TYPE, + // We don't use Consumer/Provider for Cache components. So we'll cheat. + Consumer: null, + Provider: null, + // We'll initialize these at the root. + _currentValue: null, + _currentValue2: null, + _threadCount: 0 +} ; + +{ + CacheContext._currentRenderer = null; + CacheContext._currentRenderer2 = null; +} // Creates a new empty Cache instance with a ref-count of 0. The caller is responsible +// for retaining the cache once it is in use (retainCache), and releasing the cache +// once it is no longer needed (releaseCache). + + +function createCache() { + + var cache = { + controller: new AbortControllerLocal(), + data: new Map(), + refCount: 0 + }; + return cache; +} +function retainCache(cache) { - if (fiber !== null) { - // Set the return pointer of the child to the work-in-progress fiber. - fiber.return = workInProgress; - } + { + if (cache.controller.signal.aborted) { + warn('A cache instance was retained after it was already freed. ' + 'This likely indicates a bug in React.'); + } + } - while (fiber !== null) { - var nextFiber = void 0; // Visit this fiber. + cache.refCount++; +} // Cleanup a cache instance, potentially freeing it if there are no more references - var list = fiber.dependencies; +function releaseCache(cache) { - if (list !== null) { - nextFiber = fiber.child; - var dependency = list.firstContext; + cache.refCount--; - while (dependency !== null) { - // Check if the context matches. - if (dependency.context === context) { - // Match! Schedule an update on this fiber. - if (fiber.tag === ClassComponent) { - // Schedule a force update on the work-in-progress. - var lane = pickArbitraryLane(renderLanes); - var update = createUpdate(lane); - update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the - // update to the current fiber, too, which means it will persist even if - // this render is thrown away. Since it's a race condition, not sure it's - // worth fixing. - // Inlined `enqueueUpdate` to remove interleaved update check + { + if (cache.refCount < 0) { + warn('A cache instance was released after it was already freed. ' + 'This likely indicates a bug in React.'); + } + } - var updateQueue = fiber.updateQueue; + if (cache.refCount === 0) { + scheduleCallback$1(NormalPriority, function () { + cache.controller.abort(); + }); + } +} +function pushCacheProvider(workInProgress, cache) { - if (updateQueue === null); - else { - var sharedQueue = updateQueue.shared; - var pending = sharedQueue.pending; + pushProvider(workInProgress, CacheContext, cache); +} +function popCacheProvider(workInProgress, cache) { - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + popProvider(CacheContext, workInProgress); +} - sharedQueue.pending = update; - } - } +function requestCurrentTransition() { + var transition = ReactSharedInternals.T; - fiber.lanes = mergeLanes(fiber.lanes, renderLanes); - var alternate = fiber.alternate; + if (transition !== null) { + // Whenever a transition update is scheduled, register a callback on the + // transition object so we can get the return value of the scope function. + transition._callbacks.add(handleAsyncAction); + } - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, renderLanes); - } + return transition; +} - scheduleContextWorkOnParentPath( - fiber.return, - renderLanes, - workInProgress - ); // Mark the updated lanes on the list, too. +function handleAsyncAction(transition, thenable) { + if (enableAsyncActions) { + // This is an async action. + entangleAsyncAction(transition, thenable); + } +} - list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the - // dependency list. +function notifyTransitionCallbacks(transition, returnValue) { + var callbacks = transition._callbacks; + callbacks.forEach(function (callback) { + return callback(transition, returnValue); + }); +} // When retrying a Suspense/Offscreen boundary, we restore the cache that was +// used during the previous render by placing it here, on the stack. - break; - } +var resumedCache = createCursor(null); // During the render/synchronous commit phase, we don't actually process the - dependency = dependency.next; - } - } else if (fiber.tag === ContextProvider) { - // Don't scan deeper if this is a matching provider - nextFiber = fiber.type === workInProgress.type ? null : fiber.child; - } else if (fiber.tag === DehydratedFragment) { - // If a dehydrated suspense boundary is in this subtree, we don't know - // if it will have any context consumers in it. The best we can do is - // mark it as having updates. - var parentSuspense = fiber.return; - - if (parentSuspense === null) { - throw new Error( - "We just came from a parent so we must have had a parent. This is a bug in React." - ); - } +function peekCacheFromPool() { + // If we're rendering inside a Suspense boundary that is currently hidden, + // we should use the same cache that we used during the previous render, if + // one exists. - parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes); - var _alternate = parentSuspense.alternate; - - if (_alternate !== null) { - _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes); - } // This is intentionally passing this fiber as the parent - // because we want to schedule this fiber as having work - // on its children. We'll use the childLanes on - // this fiber to indicate that a context has changed. - - scheduleContextWorkOnParentPath( - parentSuspense, - renderLanes, - workInProgress - ); - nextFiber = fiber.sibling; - } else { - // Traverse down. - nextFiber = fiber.child; - } - if (nextFiber !== null) { - // Set the return pointer of the child to the work-in-progress fiber. - nextFiber.return = fiber; - } else { - // No child. Traverse to next sibling. - nextFiber = fiber; + var cacheResumedFromPreviousRender = resumedCache.current; - while (nextFiber !== null) { - if (nextFiber === workInProgress) { - // We're back to the root of this subtree. Exit. - nextFiber = null; - break; - } + if (cacheResumedFromPreviousRender !== null) { + return cacheResumedFromPreviousRender; + } // Otherwise, check the root's cache pool. - var sibling = nextFiber.sibling; - if (sibling !== null) { - // Set the return pointer of the sibling to the work-in-progress fiber. - sibling.return = nextFiber.return; - nextFiber = sibling; - break; - } // No more siblings. Traverse up. + var root = getWorkInProgressRoot(); + var cacheFromRootCachePool = root.pooledCache; + return cacheFromRootCachePool; +} - nextFiber = nextFiber.return; - } - } +function requestCacheFromPool(renderLanes) { + // Similar to previous function, except if there's not already a cache in the + // pool, we allocate a new one. + var cacheFromPool = peekCacheFromPool(); + + if (cacheFromPool !== null) { + return cacheFromPool; + } // Create a fresh cache and add it to the root cache pool. A cache can have + // multiple owners: + // - A cache pool that lives on the FiberRoot. This is where all fresh caches + // are originally created (TODO: except during refreshes, until we implement + // this correctly). The root takes ownership immediately when the cache is + // created. Conceptually, root.pooledCache is an Option> (owned), + // and the return value of this function is a &Arc (borrowed). + // - One of several fiber types: host root, cache boundary, suspense + // component. These retain and release in the commit phase. + + + var root = getWorkInProgressRoot(); + var freshCache = createCache(); + root.pooledCache = freshCache; + retainCache(freshCache); + + if (freshCache !== null) { + root.pooledCacheLanes |= renderLanes; + } + + return freshCache; +} +function pushTransition(offscreenWorkInProgress, prevCachePool, newTransitions) { + { + if (prevCachePool === null) { + push(resumedCache, resumedCache.current, offscreenWorkInProgress); + } else { + push(resumedCache, prevCachePool.pool, offscreenWorkInProgress); + } + } +} +function popTransition(workInProgress, current) { + if (current !== null) { - fiber = nextFiber; - } + { + pop(resumedCache, workInProgress); } - function prepareToReadContext(workInProgress, renderLanes) { - currentlyRenderingFiber = workInProgress; - lastContextDependency = null; - lastFullyObservedContext = null; - var dependencies = workInProgress.dependencies; + } +} +function getSuspendedCache() { + // cache that would have been used to render fresh data during this render, + // if there was any, so that we can resume rendering with the same cache when + // we receive more data. - if (dependencies !== null) { - { - var firstContext = dependencies.firstContext; - if (firstContext !== null) { - if (includesSomeLane(dependencies.lanes, renderLanes)) { - // Context list has a pending update. Mark that this fiber performed work. - markWorkInProgressReceivedUpdate(); - } // Reset the work-in-progress list + var cacheFromPool = peekCacheFromPool(); - dependencies.firstContext = null; - } - } - } - } - function readContext(context) { - { - // This warning would fire if you read context inside a Hook like useMemo. - // Unlike the class check below, it's not enforced in production for perf. - if (isDisallowedContextReadInDEV) { - error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - } - } + if (cacheFromPool === null) { + return null; + } - return readContextForConsumer(currentlyRenderingFiber, context); - } - function readContextDuringReconciliation(consumer, context, renderLanes) { - if (currentlyRenderingFiber === null) { - prepareToReadContext(consumer, renderLanes); - } + return { + // We must also save the parent, so that when we resume we can detect + // a refresh. + parent: CacheContext._currentValue2, + pool: cacheFromPool + }; +} +function getOffscreenDeferredCache() { - return readContextForConsumer(consumer, context); - } + var cacheFromPool = peekCacheFromPool(); - function readContextForConsumer(consumer, context) { - var value = context._currentValue2; + if (cacheFromPool === null) { + return null; + } - if (lastFullyObservedContext === context); - else { - var contextItem = { - context: context, - memoizedValue: value, - next: null - }; + return { + // We must also store the parent, so that when we resume we can detect + // a refresh. + parent: CacheContext._currentValue2, + pool: cacheFromPool + }; +} - if (lastContextDependency === null) { - if (consumer === null) { - throw new Error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - } // This is the first dependency for this component. Create a new list. +/** + * Tag the fiber with an update effect. This turns a Placement into + * a PlacementAndUpdate. + */ - lastContextDependency = contextItem; - consumer.dependencies = { - lanes: NoLanes, - firstContext: contextItem - }; - } else { - // Append a new context item. - lastContextDependency = lastContextDependency.next = contextItem; - } - } +function markUpdate(workInProgress) { + workInProgress.flags |= Update; +} +/** + * In persistent mode, return whether this update needs to clone the subtree. + */ - return value; - } - // replace it with a lightweight shim that only has the features we use. +function doesRequireClone(current, completedWork) { + var didBailout = current !== null && current.child === completedWork.child; - var AbortControllerLocal = - typeof AbortController !== "undefined" - ? AbortController // $FlowFixMe[missing-this-annot] - : // $FlowFixMe[prop-missing] - function AbortControllerShim() { - var listeners = []; - var signal = (this.signal = { - aborted: false, - addEventListener: function (type, listener) { - listeners.push(listener); - } - }); + if (didBailout) { + return false; + } - this.abort = function () { - signal.aborted = true; - listeners.forEach(function (listener) { - return listener(); - }); - }; - }; // Intentionally not named imports because Rollup would - // use dynamic dispatch for CommonJS interop named imports. - - var scheduleCallback$1 = Scheduler.unstable_scheduleCallback, - NormalPriority = Scheduler.unstable_NormalPriority; - var CacheContext = { - $$typeof: REACT_CONTEXT_TYPE, - // We don't use Consumer/Provider for Cache components. So we'll cheat. - Consumer: null, - Provider: null, - // We'll initialize these at the root. - _currentValue: null, - _currentValue2: null, - _threadCount: 0 - }; + if ((completedWork.flags & ChildDeletion) !== NoFlags$1) { + return true; + } // TODO: If we move the `doesRequireClone` call after `bubbleProperties` + // then we only have to check the `completedWork.subtreeFlags`. - { - CacheContext._currentRenderer = null; - CacheContext._currentRenderer2 = null; - } // Creates a new empty Cache instance with a ref-count of 0. The caller is responsible - // for retaining the cache once it is in use (retainCache), and releasing the cache - // once it is no longer needed (releaseCache). - - function createCache() { - var cache = { - controller: new AbortControllerLocal(), - data: new Map(), - refCount: 0 - }; - return cache; + + var child = completedWork.child; + + while (child !== null) { + if ((child.flags & MutationMask) !== NoFlags$1 || (child.subtreeFlags & MutationMask) !== NoFlags$1) { + return true; } - function retainCache(cache) { - { - if (cache.controller.signal.aborted) { - warn( - "A cache instance was retained after it was already freed. " + - "This likely indicates a bug in React." - ); - } - } - cache.refCount++; - } // Cleanup a cache instance, potentially freeing it if there are no more references + child = child.sibling; + } - function releaseCache(cache) { - cache.refCount--; + return false; +} - { - if (cache.refCount < 0) { - warn( - "A cache instance was released after it was already freed. " + - "This likely indicates a bug in React." - ); +function appendAllChildren(parent, workInProgress, needsVisibilityToggle, isHidden) { + { + // We only have the top Fiber that was created but we need recurse down its + // children to find all the terminal nodes. + var _node = workInProgress.child; + + while (_node !== null) { + if (_node.tag === HostComponent) { + var instance = _node.stateNode; + + if (needsVisibilityToggle && isHidden) { + instance = cloneHiddenInstance(instance); } - } - if (cache.refCount === 0) { - scheduleCallback$1(NormalPriority, function () { - cache.controller.abort(); - }); - } - } - function pushCacheProvider(workInProgress, cache) { - pushProvider(workInProgress, CacheContext, cache); - } - function popCacheProvider(workInProgress, cache) { - popProvider(CacheContext, workInProgress); - } + appendInitialChild(parent, instance); + } else if (_node.tag === HostText) { + var _instance = _node.stateNode; - function requestCurrentTransition() { - var transition = ReactSharedInternals.T; + if (needsVisibilityToggle && isHidden) { + _instance = cloneHiddenTextInstance(); + } - if (transition !== null) { - // Whenever a transition update is scheduled, register a callback on the - // transition object so we can get the return value of the scope function. - transition._callbacks.add(handleAsyncAction); - } + appendInitialChild(parent, _instance); + } else if (_node.tag === HostPortal) ; else if (_node.tag === OffscreenComponent && _node.memoizedState !== null) { + // The children in this boundary are hidden. Toggle their visibility + // before appending. + var child = _node.child; - return transition; - } + if (child !== null) { + child.return = _node; + } - function handleAsyncAction(transition, thenable) { - if (enableAsyncActions) { - // This is an async action. - entangleAsyncAction(transition, thenable); + appendAllChildren(parent, _node, + /* needsVisibilityToggle */ + true, + /* isHidden */ + true); + } else if (_node.child !== null) { + _node.child.return = _node; + _node = _node.child; + continue; } - } - - function notifyTransitionCallbacks(transition, returnValue) { - var callbacks = transition._callbacks; - callbacks.forEach(function (callback) { - return callback(transition, returnValue); - }); - } // When retrying a Suspense/Offscreen boundary, we restore the cache that was - // used during the previous render by placing it here, on the stack. - var resumedCache = createCursor(null); // During the render/synchronous commit phase, we don't actually process the + if (_node === workInProgress) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function peekCacheFromPool() { - // If we're rendering inside a Suspense boundary that is currently hidden, - // we should use the same cache that we used during the previous render, if - // one exists. - var cacheResumedFromPreviousRender = resumedCache.current; + while (_node.sibling === null) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (_node.return === null || _node.return === workInProgress) { + return; + } - if (cacheResumedFromPreviousRender !== null) { - return cacheResumedFromPreviousRender; - } // Otherwise, check the root's cache pool. + _node = _node.return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - var root = getWorkInProgressRoot(); - var cacheFromRootCachePool = root.pooledCache; - return cacheFromRootCachePool; - } - - function requestCacheFromPool(renderLanes) { - // Similar to previous function, except if there's not already a cache in the - // pool, we allocate a new one. - var cacheFromPool = peekCacheFromPool(); - - if (cacheFromPool !== null) { - return cacheFromPool; - } // Create a fresh cache and add it to the root cache pool. A cache can have - // multiple owners: - // - A cache pool that lives on the FiberRoot. This is where all fresh caches - // are originally created (TODO: except during refreshes, until we implement - // this correctly). The root takes ownership immediately when the cache is - // created. Conceptually, root.pooledCache is an Option> (owned), - // and the return value of this function is a &Arc (borrowed). - // - One of several fiber types: host root, cache boundary, suspense - // component. These retain and release in the commit phase. - var root = getWorkInProgressRoot(); - var freshCache = createCache(); - root.pooledCache = freshCache; - retainCache(freshCache); + _node.sibling.return = _node.return; + _node = _node.sibling; + } + } +} // An unfortunate fork of appendAllChildren because we have two different parent types. - if (freshCache !== null) { - root.pooledCacheLanes |= renderLanes; - } - return freshCache; - } - function pushTransition( - offscreenWorkInProgress, - prevCachePool, - newTransitions - ) { - { - if (prevCachePool === null) { - push(resumedCache, resumedCache.current, offscreenWorkInProgress); - } else { - push(resumedCache, prevCachePool.pool, offscreenWorkInProgress); - } - } - } - function popTransition(workInProgress, current) { - if (current !== null) { - { - pop(resumedCache, workInProgress); - } - } - } - function getSuspendedCache() { - // cache that would have been used to render fresh data during this render, - // if there was any, so that we can resume rendering with the same cache when - // we receive more data. +function appendAllChildrenToContainer(containerChildSet, workInProgress, needsVisibilityToggle, isHidden) { + { + // We only have the top Fiber that was created but we need recurse down its + // children to find all the terminal nodes. + var node = workInProgress.child; - var cacheFromPool = peekCacheFromPool(); + while (node !== null) { + if (node.tag === HostComponent) { + var instance = node.stateNode; - if (cacheFromPool === null) { - return null; - } + if (needsVisibilityToggle && isHidden) { + instance = cloneHiddenInstance(instance); + } - return { - // We must also save the parent, so that when we resume we can detect - // a refresh. - parent: CacheContext._currentValue2, - pool: cacheFromPool - }; - } - function getOffscreenDeferredCache() { - var cacheFromPool = peekCacheFromPool(); + appendChildToContainerChildSet(containerChildSet, instance); + } else if (node.tag === HostText) { + var _instance2 = node.stateNode; - if (cacheFromPool === null) { - return null; - } + if (needsVisibilityToggle && isHidden) { + _instance2 = cloneHiddenTextInstance(); + } - return { - // We must also store the parent, so that when we resume we can detect - // a refresh. - parent: CacheContext._currentValue2, - pool: cacheFromPool - }; - } + appendChildToContainerChildSet(containerChildSet, _instance2); + } else if (node.tag === HostPortal) ; else if (node.tag === OffscreenComponent && node.memoizedState !== null) { + // The children in this boundary are hidden. Toggle their visibility + // before appending. + var child = node.child; - /** - * Tag the fiber with an update effect. This turns a Placement into - * a PlacementAndUpdate. - */ + if (child !== null) { + child.return = node; + } // If Offscreen is not in manual mode, detached tree is hidden from user space. - function markUpdate(workInProgress) { - workInProgress.flags |= Update; - } - /** - * In persistent mode, return whether this update needs to clone the subtree. - */ - function doesRequireClone(current, completedWork) { - var didBailout = - current !== null && current.child === completedWork.child; + var _needsVisibilityToggle = !isOffscreenManual(node); - if (didBailout) { - return false; + appendAllChildrenToContainer(containerChildSet, node, + /* needsVisibilityToggle */ + _needsVisibilityToggle, + /* isHidden */ + true); + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; } - if ((completedWork.flags & ChildDeletion) !== NoFlags$1) { - return true; - } // TODO: If we move the `doesRequireClone` call after `bubbleProperties` - // then we only have to check the `completedWork.subtreeFlags`. + node = node; - var child = completedWork.child; + if (node === workInProgress) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - while (child !== null) { - if ( - (child.flags & MutationMask) !== NoFlags$1 || - (child.subtreeFlags & MutationMask) !== NoFlags$1 - ) { - return true; + + while (node.sibling === null) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (node.return === null || node.return === workInProgress) { + return; } - child = child.sibling; - } + node = node.return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - return false; + + node.sibling.return = node.return; + node = node.sibling; } + } +} - function appendAllChildren( - parent, - workInProgress, - needsVisibilityToggle, - isHidden - ) { - { - // We only have the top Fiber that was created but we need recurse down its - // children to find all the terminal nodes. - var _node = workInProgress.child; +function updateHostContainer(current, workInProgress) { + { + if (doesRequireClone(current, workInProgress)) { + var portalOrRoot = workInProgress.stateNode; + var container = portalOrRoot.containerInfo; + var newChildSet = createContainerChildSet(); // If children might have changed, we have to add them all to the set. - while (_node !== null) { - if (_node.tag === HostComponent) { - var instance = _node.stateNode; + appendAllChildrenToContainer(newChildSet, workInProgress, + /* needsVisibilityToggle */ + false, + /* isHidden */ + false); + portalOrRoot.pendingChildren = newChildSet; // Schedule an update on the container to swap out the container. - if (needsVisibilityToggle && isHidden) { - instance = cloneHiddenInstance(instance); - } + markUpdate(workInProgress); + finalizeContainerChildren(container, newChildSet); + } + } +} - appendInitialChild(parent, instance); - } else if (_node.tag === HostText) { - var _instance = _node.stateNode; +function updateHostComponent(current, workInProgress, type, newProps, renderLanes) { + { + var currentInstance = current.stateNode; + var _oldProps = current.memoizedProps; // If there are no effects associated with this node, then none of our children had any updates. + // This guarantees that we can reuse all of them. + + var requiresClone = doesRequireClone(current, workInProgress); + + if (!requiresClone && _oldProps === newProps) { + // No changes, just reuse the existing instance. + // Note that this might release a previous clone. + workInProgress.stateNode = currentInstance; + return; + } + + getHostContext(); + var newChildSet = null; + + if (requiresClone && passChildrenWhenCloningPersistedNodes) { + newChildSet = createContainerChildSet(); // If children might have changed, we have to add them all to the set. + + appendAllChildrenToContainer(newChildSet, workInProgress, + /* needsVisibilityToggle */ + false, + /* isHidden */ + false); + } + + var newInstance = cloneInstance(currentInstance, type, _oldProps, newProps, !requiresClone, newChildSet); + + if (newInstance === currentInstance) { + // No changes, just reuse the existing instance. + // Note that this might release a previous clone. + workInProgress.stateNode = currentInstance; + return; + } // Certain renderers require commit-time effects for initial mount. + + workInProgress.stateNode = newInstance; + + if (!requiresClone) { + // If there are no other effects in this tree, we need to flag this node as having one. + // Even though we're not going to use it for anything. + // Otherwise parents won't know that there are new children to propagate upwards. + markUpdate(workInProgress); + } else if (!passChildrenWhenCloningPersistedNodes) { + // If children might have changed, we have to add them all to the set. + appendAllChildren(newInstance, workInProgress, + /* needsVisibilityToggle */ + false, + /* isHidden */ + false); + } + } +} // This function must be called at the very end of the complete phase, because +// it might throw to suspend, and if the resource immediately loads, the work +// loop will resume rendering as if the work-in-progress completed. So it must +// fully complete. +// TODO: This should ideally move to begin phase, but currently the instance is +// not created until the complete phase. For our existing use cases, host nodes +// that suspend don't have children, so it doesn't matter. But that might not +// always be true in the future. + + +function preloadInstanceAndSuspendIfNeeded(workInProgress, type, props, renderLanes) { + { + // If this flag was set previously, we can remove it. The flag + // represents whether this particular set of props might ever need to + // suspend. The safest thing to do is for maySuspendCommit to always + // return true, but if the renderer is reasonably confident that the + // underlying resource won't be evicted, it can return false as a + // performance optimization. + workInProgress.flags &= ~MaySuspendCommit; + return; + } // Mark this fiber with a flag. This gets set on all host instances +} - if (needsVisibilityToggle && isHidden) { - _instance = cloneHiddenTextInstance(); - } +function scheduleRetryEffect(workInProgress, retryQueue) { + var wakeables = retryQueue; + + if (wakeables !== null) { + // Schedule an effect to attach a retry listener to the promise. + // TODO: Move to passive phase + workInProgress.flags |= Update; + } else { + // This boundary suspended, but no wakeables were added to the retry + // queue. Check if the renderer suspended commit. If so, this means + // that once the fallback is committed, we can immediately retry + // rendering again, because rendering wasn't actually blocked. Only + // the commit phase. + // TODO: Consider a model where we always schedule an immediate retry, even + // for normal Suspense. That way the retry can partially render up to the + // first thing that suspends. + if (workInProgress.flags & ScheduleRetry) { + var retryLane = // TODO: This check should probably be moved into claimNextRetryLane + // I also suspect that we need some further consolidation of offscreen + // and retry lanes. + workInProgress.tag !== OffscreenComponent ? claimNextRetryLane() : OffscreenLane; + workInProgress.lanes = mergeLanes(workInProgress.lanes, retryLane); + } + } +} - appendInitialChild(parent, _instance); - } else if (_node.tag === HostPortal); - else if ( - _node.tag === OffscreenComponent && - _node.memoizedState !== null - ) { - // The children in this boundary are hidden. Toggle their visibility - // before appending. - var child = _node.child; +function updateHostText(current, workInProgress, oldText, newText) { + { + if (oldText !== newText) { + // If the text content differs, we'll create a new text instance for it. + var rootContainerInstance = getRootHostContainer(); + var currentHostContext = getHostContext(); + workInProgress.stateNode = createTextInstance(newText, rootContainerInstance, currentHostContext, workInProgress); // We'll have to mark it as having an effect, even though we won't use the effect for anything. + // This lets the parents know that at least one of their children has changed. - if (child !== null) { - child.return = _node; - } + markUpdate(workInProgress); + } else { + workInProgress.stateNode = current.stateNode; + } + } +} - appendAllChildren( - parent, - _node, - /* needsVisibilityToggle */ - true, - /* isHidden */ - true - ); - } else if (_node.child !== null) { - _node.child.return = _node; - _node = _node.child; - continue; - } +function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) { - if (_node === workInProgress) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + switch (renderState.tailMode) { + case 'hidden': + { + // Any insertions at the end of the tail list after this point + // should be invisible. If there are already mounted boundaries + // anything before them are not considered for collapsing. + // Therefore we need to go through the whole tail to find if + // there are any. + var tailNode = renderState.tail; + var lastTailNode = null; - while (_node.sibling === null) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (_node.return === null || _node.return === workInProgress) { - return; - } + while (tailNode !== null) { + if (tailNode.alternate !== null) { + lastTailNode = tailNode; + } + + tailNode = tailNode.sibling; + } // Next we're simply going to delete all insertions after the + // last rendered item. - _node = _node.return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow - _node.sibling.return = _node.return; - _node = _node.sibling; + if (lastTailNode === null) { + // All remaining items in the tail are insertions. + renderState.tail = null; + } else { + // Detach the insertion after the last node that was already + // inserted. + lastTailNode.sibling = null; } + + break; } - } // An unfortunate fork of appendAllChildren because we have two different parent types. - function appendAllChildrenToContainer( - containerChildSet, - workInProgress, - needsVisibilityToggle, - isHidden - ) { + case 'collapsed': { - // We only have the top Fiber that was created but we need recurse down its - // children to find all the terminal nodes. - var node = workInProgress.child; + // Any insertions at the end of the tail list after this point + // should be invisible. If there are already mounted boundaries + // anything before them are not considered for collapsing. + // Therefore we need to go through the whole tail to find if + // there are any. + var _tailNode = renderState.tail; + var _lastTailNode = null; - while (node !== null) { - if (node.tag === HostComponent) { - var instance = node.stateNode; - - if (needsVisibilityToggle && isHidden) { - instance = cloneHiddenInstance(instance); - } - - appendChildToContainerChildSet(containerChildSet, instance); - } else if (node.tag === HostText) { - var _instance2 = node.stateNode; + while (_tailNode !== null) { + if (_tailNode.alternate !== null) { + _lastTailNode = _tailNode; + } - if (needsVisibilityToggle && isHidden) { - _instance2 = cloneHiddenTextInstance(); - } + _tailNode = _tailNode.sibling; + } // Next we're simply going to delete all insertions after the + // last rendered item. - appendChildToContainerChildSet(containerChildSet, _instance2); - } else if (node.tag === HostPortal); - else if ( - node.tag === OffscreenComponent && - node.memoizedState !== null - ) { - // The children in this boundary are hidden. Toggle their visibility - // before appending. - var child = node.child; - if (child !== null) { - child.return = node; - } // If Offscreen is not in manual mode, detached tree is hidden from user space. - - var _needsVisibilityToggle = !isOffscreenManual(node); - - appendAllChildrenToContainer( - containerChildSet, - node, - /* needsVisibilityToggle */ - _needsVisibilityToggle, - /* isHidden */ - true - ); - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; + if (_lastTailNode === null) { + // All remaining items in the tail are insertions. + if (!hasRenderedATailFallback && renderState.tail !== null) { + // We suspended during the head. We want to show at least one + // row at the tail. So we'll keep on and cut off the rest. + renderState.tail.sibling = null; + } else { + renderState.tail = null; } + } else { + // Detach the insertion after the last node that was already + // inserted. + _lastTailNode.sibling = null; + } - node = node; + break; + } + } +} - if (node === workInProgress) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow +function bubbleProperties(completedWork) { + var didBailout = completedWork.alternate !== null && completedWork.alternate.child === completedWork.child; + var newChildLanes = NoLanes; + var subtreeFlags = NoFlags$1; + + if (!didBailout) { + // Bubble up the earliest expiration time. + if ((completedWork.mode & ProfileMode) !== NoMode) { + // In profiling mode, resetChildExpirationTime is also used to reset + // profiler durations. + var actualDuration = completedWork.actualDuration; + var treeBaseDuration = completedWork.selfBaseDuration; + var child = completedWork.child; - while (node.sibling === null) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (node.return === null || node.return === workInProgress) { - return; - } + while (child !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(child.lanes, child.childLanes)); + subtreeFlags |= child.subtreeFlags; + subtreeFlags |= child.flags; // When a fiber is cloned, its actualDuration is reset to 0. This value will + // only be updated if work is done on the fiber (i.e. it doesn't bailout). + // When work is done, it should bubble to the parent's actualDuration. If + // the fiber has not been cloned though, (meaning no work was done), then + // this value will reflect the amount of time spent working on a previous + // render. In that case it should not bubble. We determine whether it was + // cloned by comparing the child pointer. + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - node = node.return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + actualDuration += child.actualDuration; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - node.sibling.return = node.return; - node = node.sibling; - } + treeBaseDuration += child.treeBaseDuration; + child = child.sibling; } - } - function updateHostContainer(current, workInProgress) { - { - if (doesRequireClone(current, workInProgress)) { - var portalOrRoot = workInProgress.stateNode; - var container = portalOrRoot.containerInfo; - var newChildSet = createContainerChildSet(); // If children might have changed, we have to add them all to the set. - - appendAllChildrenToContainer( - newChildSet, - workInProgress, - /* needsVisibilityToggle */ - false, - /* isHidden */ - false - ); - portalOrRoot.pendingChildren = newChildSet; // Schedule an update on the container to swap out the container. - - markUpdate(workInProgress); - finalizeContainerChildren(container, newChildSet); - } - } - } - - function updateHostComponent( - current, - workInProgress, - type, - newProps, - renderLanes - ) { - { - var currentInstance = current.stateNode; - var _oldProps = current.memoizedProps; // If there are no effects associated with this node, then none of our children had any updates. - // This guarantees that we can reuse all of them. + completedWork.actualDuration = actualDuration; + completedWork.treeBaseDuration = treeBaseDuration; + } else { + var _child = completedWork.child; - var requiresClone = doesRequireClone(current, workInProgress); + while (_child !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child.lanes, _child.childLanes)); + subtreeFlags |= _child.subtreeFlags; + subtreeFlags |= _child.flags; // Update the return pointer so the tree is consistent. This is a code + // smell because it assumes the commit phase is never concurrent with + // the render phase. Will address during refactor to alternate model. - if (!requiresClone && _oldProps === newProps) { - // No changes, just reuse the existing instance. - // Note that this might release a previous clone. - workInProgress.stateNode = currentInstance; - return; - } + _child.return = completedWork; + _child = _child.sibling; + } + } - getHostContext(); - var newChildSet = null; + completedWork.subtreeFlags |= subtreeFlags; + } else { + // Bubble up the earliest expiration time. + if ((completedWork.mode & ProfileMode) !== NoMode) { + // In profiling mode, resetChildExpirationTime is also used to reset + // profiler durations. + var _treeBaseDuration = completedWork.selfBaseDuration; + var _child2 = completedWork.child; - if (requiresClone && passChildrenWhenCloningPersistedNodes) { - newChildSet = createContainerChildSet(); // If children might have changed, we have to add them all to the set. + while (_child2 !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child2.lanes, _child2.childLanes)); // "Static" flags share the lifetime of the fiber/hook they belong to, + // so we should bubble those up even during a bailout. All the other + // flags have a lifetime only of a single render + commit, so we should + // ignore them. - appendAllChildrenToContainer( - newChildSet, - workInProgress, - /* needsVisibilityToggle */ - false, - /* isHidden */ - false - ); - } + subtreeFlags |= _child2.subtreeFlags & StaticMask; + subtreeFlags |= _child2.flags & StaticMask; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - var newInstance = cloneInstance( - currentInstance, - type, - _oldProps, - newProps, - !requiresClone, - newChildSet - ); + _treeBaseDuration += _child2.treeBaseDuration; + _child2 = _child2.sibling; + } - if (newInstance === currentInstance) { - // No changes, just reuse the existing instance. - // Note that this might release a previous clone. - workInProgress.stateNode = currentInstance; - return; - } // Certain renderers require commit-time effects for initial mount. - - workInProgress.stateNode = newInstance; - - if (!requiresClone) { - // If there are no other effects in this tree, we need to flag this node as having one. - // Even though we're not going to use it for anything. - // Otherwise parents won't know that there are new children to propagate upwards. - markUpdate(workInProgress); - } else if (!passChildrenWhenCloningPersistedNodes) { - // If children might have changed, we have to add them all to the set. - appendAllChildren( - newInstance, - workInProgress, - /* needsVisibilityToggle */ - false, - /* isHidden */ - false - ); - } - } - } // This function must be called at the very end of the complete phase, because - // it might throw to suspend, and if the resource immediately loads, the work - // loop will resume rendering as if the work-in-progress completed. So it must - // fully complete. - // TODO: This should ideally move to begin phase, but currently the instance is - // not created until the complete phase. For our existing use cases, host nodes - // that suspend don't have children, so it doesn't matter. But that might not - // always be true in the future. - - function preloadInstanceAndSuspendIfNeeded( - workInProgress, - type, - props, - renderLanes - ) { - { - // If this flag was set previously, we can remove it. The flag - // represents whether this particular set of props might ever need to - // suspend. The safest thing to do is for maySuspendCommit to always - // return true, but if the renderer is reasonably confident that the - // underlying resource won't be evicted, it can return false as a - // performance optimization. - workInProgress.flags &= ~MaySuspendCommit; - return; - } // Mark this fiber with a flag. This gets set on all host instances - } + completedWork.treeBaseDuration = _treeBaseDuration; + } else { + var _child3 = completedWork.child; - function scheduleRetryEffect(workInProgress, retryQueue) { - var wakeables = retryQueue; + while (_child3 !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child3.lanes, _child3.childLanes)); // "Static" flags share the lifetime of the fiber/hook they belong to, + // so we should bubble those up even during a bailout. All the other + // flags have a lifetime only of a single render + commit, so we should + // ignore them. - if (wakeables !== null) { - // Schedule an effect to attach a retry listener to the promise. - // TODO: Move to passive phase - workInProgress.flags |= Update; - } else { - // This boundary suspended, but no wakeables were added to the retry - // queue. Check if the renderer suspended commit. If so, this means - // that once the fallback is committed, we can immediately retry - // rendering again, because rendering wasn't actually blocked. Only - // the commit phase. - // TODO: Consider a model where we always schedule an immediate retry, even - // for normal Suspense. That way the retry can partially render up to the - // first thing that suspends. - if (workInProgress.flags & ScheduleRetry) { - var retryLane = // TODO: This check should probably be moved into claimNextRetryLane - // I also suspect that we need some further consolidation of offscreen - // and retry lanes. - workInProgress.tag !== OffscreenComponent - ? claimNextRetryLane() - : OffscreenLane; - workInProgress.lanes = mergeLanes(workInProgress.lanes, retryLane); - } - } - } - - function updateHostText(current, workInProgress, oldText, newText) { - { - if (oldText !== newText) { - // If the text content differs, we'll create a new text instance for it. - var rootContainerInstance = getRootHostContainer(); - var currentHostContext = getHostContext(); - workInProgress.stateNode = createTextInstance( - newText, - rootContainerInstance, - currentHostContext, - workInProgress - ); // We'll have to mark it as having an effect, even though we won't use the effect for anything. - // This lets the parents know that at least one of their children has changed. - - markUpdate(workInProgress); - } else { - workInProgress.stateNode = current.stateNode; - } + subtreeFlags |= _child3.subtreeFlags & StaticMask; + subtreeFlags |= _child3.flags & StaticMask; // Update the return pointer so the tree is consistent. This is a code + // smell because it assumes the commit phase is never concurrent with + // the render phase. Will address during refactor to alternate model. + + _child3.return = completedWork; + _child3 = _child3.sibling; } } - function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) { - switch (renderState.tailMode) { - case "hidden": { - // Any insertions at the end of the tail list after this point - // should be invisible. If there are already mounted boundaries - // anything before them are not considered for collapsing. - // Therefore we need to go through the whole tail to find if - // there are any. - var tailNode = renderState.tail; - var lastTailNode = null; + completedWork.subtreeFlags |= subtreeFlags; + } - while (tailNode !== null) { - if (tailNode.alternate !== null) { - lastTailNode = tailNode; - } - - tailNode = tailNode.sibling; - } // Next we're simply going to delete all insertions after the - // last rendered item. + completedWork.childLanes = newChildLanes; + return didBailout; +} - if (lastTailNode === null) { - // All remaining items in the tail are insertions. - renderState.tail = null; - } else { - // Detach the insertion after the last node that was already - // inserted. - lastTailNode.sibling = null; - } +function completeDehydratedSuspenseBoundary(current, workInProgress, nextState) { + var wasHydrated = popHydrationState(); - break; - } + if (nextState !== null && nextState.dehydrated !== null) { + // We might be inside a hydration state the first time we're picking up this + // Suspense boundary, and also after we've reentered it for further hydration. + if (current === null) { + if (!wasHydrated) { + throw new Error('A dehydrated suspense component was completed without a hydrated node. ' + 'This is probably a bug in React.'); + } - case "collapsed": { - // Any insertions at the end of the tail list after this point - // should be invisible. If there are already mounted boundaries - // anything before them are not considered for collapsing. - // Therefore we need to go through the whole tail to find if - // there are any. - var _tailNode = renderState.tail; - var _lastTailNode = null; + prepareToHydrateHostSuspenseInstance(); + bubbleProperties(workInProgress); - while (_tailNode !== null) { - if (_tailNode.alternate !== null) { - _lastTailNode = _tailNode; - } + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + var isTimedOutSuspense = nextState !== null; - _tailNode = _tailNode.sibling; - } // Next we're simply going to delete all insertions after the - // last rendered item. + if (isTimedOutSuspense) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var primaryChildFragment = workInProgress.child; - if (_lastTailNode === null) { - // All remaining items in the tail are insertions. - if (!hasRenderedATailFallback && renderState.tail !== null) { - // We suspended during the head. We want to show at least one - // row at the tail. So we'll keep on and cut off the rest. - renderState.tail.sibling = null; - } else { - renderState.tail = null; + if (primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; } - } else { - // Detach the insertion after the last node that was already - // inserted. - _lastTailNode.sibling = null; } - - break; } } - } - function bubbleProperties(completedWork) { - var didBailout = - completedWork.alternate !== null && - completedWork.alternate.child === completedWork.child; - var newChildLanes = NoLanes; - var subtreeFlags = NoFlags$1; + return false; + } else { + emitPendingHydrationWarnings(); // We might have reentered this boundary to hydrate it. If so, we need to reset the hydration - if (!didBailout) { - // Bubble up the earliest expiration time. - if ((completedWork.mode & ProfileMode) !== NoMode) { - // In profiling mode, resetChildExpirationTime is also used to reset - // profiler durations. - var actualDuration = completedWork.actualDuration; - var treeBaseDuration = completedWork.selfBaseDuration; - var child = completedWork.child; + if ((workInProgress.flags & DidCapture) === NoFlags$1) { + // This boundary did not suspend so it's now hydrated and unsuspended. + workInProgress.memoizedState = null; + } // If nothing suspended, we need to schedule an effect to mark this boundary + // as having hydrated so events know that they're free to be invoked. + // It's also a signal to replay events and the suspense callback. + // If something suspended, schedule an effect to attach retry listeners. + // So we might as well always mark this. - while (child !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(child.lanes, child.childLanes) - ); - subtreeFlags |= child.subtreeFlags; - subtreeFlags |= child.flags; // When a fiber is cloned, its actualDuration is reset to 0. This value will - // only be updated if work is done on the fiber (i.e. it doesn't bailout). - // When work is done, it should bubble to the parent's actualDuration. If - // the fiber has not been cloned though, (meaning no work was done), then - // this value will reflect the amount of time spent working on a previous - // render. In that case it should not bubble. We determine whether it was - // cloned by comparing the child pointer. - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - actualDuration += child.actualDuration; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - treeBaseDuration += child.treeBaseDuration; - child = child.sibling; - } - completedWork.actualDuration = actualDuration; - completedWork.treeBaseDuration = treeBaseDuration; - } else { - var _child = completedWork.child; + workInProgress.flags |= Update; + bubbleProperties(workInProgress); - while (_child !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child.lanes, _child.childLanes) - ); - subtreeFlags |= _child.subtreeFlags; - subtreeFlags |= _child.flags; // Update the return pointer so the tree is consistent. This is a code - // smell because it assumes the commit phase is never concurrent with - // the render phase. Will address during refactor to alternate model. + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + var _isTimedOutSuspense = nextState !== null; + + if (_isTimedOutSuspense) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var _primaryChildFragment = workInProgress.child; - _child.return = completedWork; - _child = _child.sibling; + if (_primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= _primaryChildFragment.treeBaseDuration; + } } } + } - completedWork.subtreeFlags |= subtreeFlags; - } else { - // Bubble up the earliest expiration time. - if ((completedWork.mode & ProfileMode) !== NoMode) { - // In profiling mode, resetChildExpirationTime is also used to reset - // profiler durations. - var _treeBaseDuration = completedWork.selfBaseDuration; - var _child2 = completedWork.child; - - while (_child2 !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child2.lanes, _child2.childLanes) - ); // "Static" flags share the lifetime of the fiber/hook they belong to, - // so we should bubble those up even during a bailout. All the other - // flags have a lifetime only of a single render + commit, so we should - // ignore them. - - subtreeFlags |= _child2.subtreeFlags & StaticMask; - subtreeFlags |= _child2.flags & StaticMask; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - _treeBaseDuration += _child2.treeBaseDuration; - _child2 = _child2.sibling; - } + return false; + } + } else { + // Successfully completed this tree. If this was a forced client render, + // there may have been recoverable errors during first hydration + // attempt. If so, add them to a queue so we can log them in the + // commit phase. + upgradeHydrationErrorsToRecoverable(); // Fall through to normal Suspense path - completedWork.treeBaseDuration = _treeBaseDuration; - } else { - var _child3 = completedWork.child; - - while (_child3 !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child3.lanes, _child3.childLanes) - ); // "Static" flags share the lifetime of the fiber/hook they belong to, - // so we should bubble those up even during a bailout. All the other - // flags have a lifetime only of a single render + commit, so we should - // ignore them. - - subtreeFlags |= _child3.subtreeFlags & StaticMask; - subtreeFlags |= _child3.flags & StaticMask; // Update the return pointer so the tree is consistent. This is a code - // smell because it assumes the commit phase is never concurrent with - // the render phase. Will address during refactor to alternate model. - - _child3.return = completedWork; - _child3 = _child3.sibling; - } + return true; + } +} + +function completeWork(current, workInProgress, renderLanes) { + var newProps = workInProgress.pendingProps; // Note: This intentionally doesn't check if we're hydrating because comparing + + switch (workInProgress.tag) { + case IncompleteFunctionComponent: + + case LazyComponent: + case SimpleMemoComponent: + case FunctionComponent: + case ForwardRef: + case Fragment: + case Mode: + case Profiler: + case ContextConsumer: + case MemoComponent: + bubbleProperties(workInProgress); + return null; + + case ClassComponent: + { + var Component = workInProgress.type; + + if (isContextProvider(Component)) { + popContext(workInProgress); } - completedWork.subtreeFlags |= subtreeFlags; + bubbleProperties(workInProgress); + return null; } - completedWork.childLanes = newChildLanes; - return didBailout; - } + case HostRoot: + { + var fiberRoot = workInProgress.stateNode; - function completeDehydratedSuspenseBoundary( - current, - workInProgress, - nextState - ) { - var wasHydrated = popHydrationState(); + { + var previousCache = null; - if (nextState !== null && nextState.dehydrated !== null) { - // We might be inside a hydration state the first time we're picking up this - // Suspense boundary, and also after we've reentered it for further hydration. - if (current === null) { - if (!wasHydrated) { - throw new Error( - "A dehydrated suspense component was completed without a hydrated node. " + - "This is probably a bug in React." - ); + if (current !== null) { + previousCache = current.memoizedState.cache; } - prepareToHydrateHostSuspenseInstance(); - bubbleProperties(workInProgress); - - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - var isTimedOutSuspense = nextState !== null; - - if (isTimedOutSuspense) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var primaryChildFragment = workInProgress.child; + var cache = workInProgress.memoizedState.cache; - if (primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - primaryChildFragment.treeBaseDuration; - } - } - } + if (cache !== previousCache) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; } - return false; - } else { - emitPendingHydrationWarnings(); // We might have reentered this boundary to hydrate it. If so, we need to reset the hydration + popCacheProvider(workInProgress); + } + popHostContainer(workInProgress); + popTopLevelContextObject(workInProgress); - if ((workInProgress.flags & DidCapture) === NoFlags$1) { - // This boundary did not suspend so it's now hydrated and unsuspended. - workInProgress.memoizedState = null; - } // If nothing suspended, we need to schedule an effect to mark this boundary - // as having hydrated so events know that they're free to be invoked. - // It's also a signal to replay events and the suspense callback. - // If something suspended, schedule an effect to attach retry listeners. - // So we might as well always mark this. + if (fiberRoot.pendingContext) { + fiberRoot.context = fiberRoot.pendingContext; + fiberRoot.pendingContext = null; + } - workInProgress.flags |= Update; - bubbleProperties(workInProgress); + if (current === null || current.child === null) { + // If we hydrated, pop so that we can delete any remaining children + // that weren't hydrated. + var wasHydrated = popHydrationState(); - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - var _isTimedOutSuspense = nextState !== null; + if (wasHydrated) { + emitPendingHydrationWarnings(); // If we hydrated, then we'll need to schedule an update for + // the commit side-effects on the root. - if (_isTimedOutSuspense) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var _primaryChildFragment = workInProgress.child; + markUpdate(workInProgress); + } else { + if (current !== null) { + var prevState = current.memoizedState; - if (_primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - _primaryChildFragment.treeBaseDuration; - } + if ( // Check if this is a client root + !prevState.isDehydrated || // Check if we reverted to client rendering (e.g. due to an error) + (workInProgress.flags & ForceClientRender) !== NoFlags$1) { + // Schedule an effect to clear this container at the start of the + // next commit. This handles the case of React rendering into a + // container with previous children. It's also safe to do for + // updates too, because current.child would only be null if the + // previous render was null (so the container would already + // be empty). + workInProgress.flags |= Snapshot; // If this was a forced client render, there may have been + // recoverable errors during first hydration attempt. If so, add + // them to a queue so we can log them in the commit phase. + + upgradeHydrationErrorsToRecoverable(); } } } - - return false; } - } else { - // Successfully completed this tree. If this was a forced client render, - // there may have been recoverable errors during first hydration - // attempt. If so, add them to a queue so we can log them in the - // commit phase. - upgradeHydrationErrorsToRecoverable(); // Fall through to normal Suspense path - return true; + updateHostContainer(current, workInProgress); + bubbleProperties(workInProgress); + + return null; } - } - function completeWork(current, workInProgress, renderLanes) { - var newProps = workInProgress.pendingProps; // Note: This intentionally doesn't check if we're hydrating because comparing + case HostHoistable: - switch (workInProgress.tag) { - case IncompleteFunctionComponent: + case HostSingleton: - case LazyComponent: - case SimpleMemoComponent: - case FunctionComponent: - case ForwardRef: - case Fragment: - case Mode: - case Profiler: - case ContextConsumer: - case MemoComponent: - bubbleProperties(workInProgress); - return null; + case HostComponent: + { + popHostContext(workInProgress); + var _type2 = workInProgress.type; + + if (current !== null && workInProgress.stateNode != null) { + updateHostComponent(current, workInProgress, _type2, newProps); + } else { + if (!newProps) { + if (workInProgress.stateNode === null) { + throw new Error('We must have new props for new mounts. This error is likely ' + 'caused by a bug in React. Please file an issue.'); + } // This can happen when we abort work. - case ClassComponent: { - var Component = workInProgress.type; - if (isContextProvider(Component)) { - popContext(workInProgress); + bubbleProperties(workInProgress); + return null; } - bubbleProperties(workInProgress); - return null; - } + var _currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context + // "stack" as the parent. Then append children as we go in beginWork + // or completeWork depending on whether we want to add them top->down or + // bottom->up. Top->down is faster in IE11. - case HostRoot: { - var fiberRoot = workInProgress.stateNode; - { - var previousCache = null; + var _wasHydrated2 = popHydrationState(); - if (current !== null) { - previousCache = current.memoizedState.cache; - } + if (_wasHydrated2) { + // TODO: Move this and createInstance step into the beginPhase + // to consolidate. + prepareToHydrateHostInstance(); + } else { + var _rootContainerInstance = getRootHostContainer(); - var cache = workInProgress.memoizedState.cache; + var _instance3 = createInstance(_type2, newProps, _rootContainerInstance, _currentHostContext, workInProgress); // TODO: For persistent renderers, we should pass children as part + // of the initial instance creation - if (cache !== previousCache) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } - popCacheProvider(workInProgress); + appendAllChildren(_instance3, workInProgress, false, false); + workInProgress.stateNode = _instance3; // Certain renderers require commit-time effects for initial mount. } - popHostContainer(workInProgress); - popTopLevelContextObject(workInProgress); + } - if (fiberRoot.pendingContext) { - fiberRoot.context = fiberRoot.pendingContext; - fiberRoot.pendingContext = null; - } + bubbleProperties(workInProgress); // This must come at the very end of the complete phase, because it might + // throw to suspend, and if the resource immediately loads, the work loop + // will resume rendering as if the work-in-progress completed. So it must + // fully complete. - if (current === null || current.child === null) { - // If we hydrated, pop so that we can delete any remaining children - // that weren't hydrated. - var wasHydrated = popHydrationState(); + preloadInstanceAndSuspendIfNeeded(workInProgress); + return null; + } - if (wasHydrated) { - emitPendingHydrationWarnings(); // If we hydrated, then we'll need to schedule an update for - // the commit side-effects on the root. + case HostText: + { + var newText = newProps; - markUpdate(workInProgress); - } else { - if (current !== null) { - var prevState = current.memoizedState; - - if ( - // Check if this is a client root - !prevState.isDehydrated || // Check if we reverted to client rendering (e.g. due to an error) - (workInProgress.flags & ForceClientRender) !== NoFlags$1 - ) { - // Schedule an effect to clear this container at the start of the - // next commit. This handles the case of React rendering into a - // container with previous children. It's also safe to do for - // updates too, because current.child would only be null if the - // previous render was null (so the container would already - // be empty). - workInProgress.flags |= Snapshot; // If this was a forced client render, there may have been - // recoverable errors during first hydration attempt. If so, add - // them to a queue so we can log them in the commit phase. - - upgradeHydrationErrorsToRecoverable(); - } - } - } - } + if (current && workInProgress.stateNode != null) { + var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need + // to schedule a side-effect to do the updates. - updateHostContainer(current, workInProgress); - bubbleProperties(workInProgress); + updateHostText(current, workInProgress, oldText, newText); + } else { + if (typeof newText !== 'string') { + if (workInProgress.stateNode === null) { + throw new Error('We must have new props for new mounts. This error is likely ' + 'caused by a bug in React. Please file an issue.'); + } // This can happen when we abort work. - return null; - } + } - case HostHoistable: + var _rootContainerInstance2 = getRootHostContainer(); - case HostSingleton: + var _currentHostContext2 = getHostContext(); - case HostComponent: { - popHostContext(workInProgress); - var _type2 = workInProgress.type; + var _wasHydrated3 = popHydrationState(); - if (current !== null && workInProgress.stateNode != null) { - updateHostComponent(current, workInProgress, _type2, newProps); + if (_wasHydrated3) { + prepareToHydrateHostTextInstance(); } else { - if (!newProps) { - if (workInProgress.stateNode === null) { - throw new Error( - "We must have new props for new mounts. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } // This can happen when we abort work. - - bubbleProperties(workInProgress); - return null; - } + workInProgress.stateNode = createTextInstance(newText, _rootContainerInstance2, _currentHostContext2, workInProgress); + } + } + + bubbleProperties(workInProgress); + return null; + } + + case SuspenseComponent: + { + var nextState = workInProgress.memoizedState; // Special path for dehydrated boundaries. We may eventually move this + // to its own fiber type so that we can add other kinds of hydration + // boundaries that aren't associated with a Suspense tree. In anticipation + // of such a refactor, all the hydration logic is contained in + // this branch. - var _currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context - // "stack" as the parent. Then append children as we go in beginWork - // or completeWork depending on whether we want to add them top->down or - // bottom->up. Top->down is faster in IE11. + if (current === null || current.memoizedState !== null && current.memoizedState.dehydrated !== null) { + var fallthroughToNormalSuspensePath = completeDehydratedSuspenseBoundary(current, workInProgress, nextState); - var _wasHydrated2 = popHydrationState(); + if (!fallthroughToNormalSuspensePath) { + if (workInProgress.flags & ForceClientRender) { + popSuspenseHandler(workInProgress); // Special case. There were remaining unhydrated nodes. We treat + // this as a mismatch. Revert to client rendering. - if (_wasHydrated2) { - // TODO: Move this and createInstance step into the beginPhase - // to consolidate. - prepareToHydrateHostInstance(); + return workInProgress; } else { - var _rootContainerInstance = getRootHostContainer(); - - var _instance3 = createInstance( - _type2, - newProps, - _rootContainerInstance, - _currentHostContext, - workInProgress - ); // TODO: For persistent renderers, we should pass children as part - // of the initial instance creation - - appendAllChildren(_instance3, workInProgress, false, false); - workInProgress.stateNode = _instance3; // Certain renderers require commit-time effects for initial mount. - } - } + popSuspenseHandler(workInProgress); // Did not finish hydrating, either because this is the initial + // render or because something suspended. - bubbleProperties(workInProgress); // This must come at the very end of the complete phase, because it might - // throw to suspend, and if the resource immediately loads, the work loop - // will resume rendering as if the work-in-progress completed. So it must - // fully complete. + return null; + } + } // Continue with the normal Suspense path. - preloadInstanceAndSuspendIfNeeded(workInProgress); - return null; } - case HostText: { - var newText = newProps; + popSuspenseHandler(workInProgress); - if (current && workInProgress.stateNode != null) { - var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need - // to schedule a side-effect to do the updates. + if ((workInProgress.flags & DidCapture) !== NoFlags$1) { + // Something suspended. Re-render with the fallback children. + workInProgress.lanes = renderLanes; // Do not reset the effect list. - updateHostText(current, workInProgress, oldText, newText); - } else { - if (typeof newText !== "string") { - if (workInProgress.stateNode === null) { - throw new Error( - "We must have new props for new mounts. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } // This can happen when we abort work. - } + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); + } // Don't bubble properties in this case. - var _rootContainerInstance2 = getRootHostContainer(); - var _currentHostContext2 = getHostContext(); + return workInProgress; + } - var _wasHydrated3 = popHydrationState(); + var nextDidTimeout = nextState !== null; + var prevDidTimeout = current !== null && current.memoizedState !== null; - if (_wasHydrated3) { - prepareToHydrateHostTextInstance(); - } else { - workInProgress.stateNode = createTextInstance( - newText, - _rootContainerInstance2, - _currentHostContext2, - workInProgress - ); - } - } + if (nextDidTimeout) { + var offscreenFiber = workInProgress.child; + var _previousCache = null; - bubbleProperties(workInProgress); - return null; - } + if (offscreenFiber.alternate !== null && offscreenFiber.alternate.memoizedState !== null && offscreenFiber.alternate.memoizedState.cachePool !== null) { + _previousCache = offscreenFiber.alternate.memoizedState.cachePool.pool; + } - case SuspenseComponent: { - var nextState = workInProgress.memoizedState; // Special path for dehydrated boundaries. We may eventually move this - // to its own fiber type so that we can add other kinds of hydration - // boundaries that aren't associated with a Suspense tree. In anticipation - // of such a refactor, all the hydration logic is contained in - // this branch. - - if ( - current === null || - (current.memoizedState !== null && - current.memoizedState.dehydrated !== null) - ) { - var fallthroughToNormalSuspensePath = - completeDehydratedSuspenseBoundary( - current, - workInProgress, - nextState - ); - - if (!fallthroughToNormalSuspensePath) { - if (workInProgress.flags & ForceClientRender) { - popSuspenseHandler(workInProgress); // Special case. There were remaining unhydrated nodes. We treat - // this as a mismatch. Revert to client rendering. - - return workInProgress; - } else { - popSuspenseHandler(workInProgress); // Did not finish hydrating, either because this is the initial - // render or because something suspended. + var _cache = null; - return null; - } - } // Continue with the normal Suspense path. + if (offscreenFiber.memoizedState !== null && offscreenFiber.memoizedState.cachePool !== null) { + _cache = offscreenFiber.memoizedState.cachePool.pool; } - popSuspenseHandler(workInProgress); - - if ((workInProgress.flags & DidCapture) !== NoFlags$1) { - // Something suspended. Re-render with the fallback children. - workInProgress.lanes = renderLanes; // Do not reset the effect list. + if (_cache !== _previousCache) { + // Run passive effects to retain/release the cache. + offscreenFiber.flags |= Passive$1; + } + } // If the suspended state of the boundary changes, we need to schedule + // a passive effect, which is when we process the transitions - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } // Don't bubble properties in this case. - return workInProgress; - } + if (nextDidTimeout !== prevDidTimeout) { + // an effect to toggle the subtree's visibility. When we switch from + // fallback -> primary, the inner Offscreen fiber schedules this effect + // as part of its normal complete phase. But when we switch from + // primary -> fallback, the inner Offscreen fiber does not have a complete + // phase. So we need to schedule its effect here. + // + // We also use this flag to connect/disconnect the effects, but the same + // logic applies: when re-connecting, the Offscreen fiber's complete + // phase will handle scheduling the effect. It's only when the fallback + // is active that we have to do anything special. - var nextDidTimeout = nextState !== null; - var prevDidTimeout = - current !== null && current.memoizedState !== null; if (nextDidTimeout) { - var offscreenFiber = workInProgress.child; - var _previousCache = null; - - if ( - offscreenFiber.alternate !== null && - offscreenFiber.alternate.memoizedState !== null && - offscreenFiber.alternate.memoizedState.cachePool !== null - ) { - _previousCache = - offscreenFiber.alternate.memoizedState.cachePool.pool; - } - - var _cache = null; + var _offscreenFiber2 = workInProgress.child; + _offscreenFiber2.flags |= Visibility; + } + } - if ( - offscreenFiber.memoizedState !== null && - offscreenFiber.memoizedState.cachePool !== null - ) { - _cache = offscreenFiber.memoizedState.cachePool.pool; - } + var retryQueue = workInProgress.updateQueue; + scheduleRetryEffect(workInProgress, retryQueue); - if (_cache !== _previousCache) { - // Run passive effects to retain/release the cache. - offscreenFiber.flags |= Passive$1; - } - } // If the suspended state of the boundary changes, we need to schedule - // a passive effect, which is when we process the transitions - - if (nextDidTimeout !== prevDidTimeout) { - // an effect to toggle the subtree's visibility. When we switch from - // fallback -> primary, the inner Offscreen fiber schedules this effect - // as part of its normal complete phase. But when we switch from - // primary -> fallback, the inner Offscreen fiber does not have a complete - // phase. So we need to schedule its effect here. - // - // We also use this flag to connect/disconnect the effects, but the same - // logic applies: when re-connecting, the Offscreen fiber's complete - // phase will handle scheduling the effect. It's only when the fallback - // is active that we have to do anything special. + bubbleProperties(workInProgress); + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { if (nextDidTimeout) { - var _offscreenFiber2 = workInProgress.child; - _offscreenFiber2.flags |= Visibility; + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var primaryChildFragment = workInProgress.child; + + if (primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; + } } } + } - var retryQueue = workInProgress.updateQueue; - scheduleRetryEffect(workInProgress, retryQueue); + return null; + } - bubbleProperties(workInProgress); + case HostPortal: + popHostContainer(workInProgress); + updateHostContainer(current, workInProgress); - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - if (nextDidTimeout) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var primaryChildFragment = workInProgress.child; - - if (primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - primaryChildFragment.treeBaseDuration; - } - } - } - } + bubbleProperties(workInProgress); + return null; - return null; - } + case ContextProvider: + // Pop provider fiber + var context; - case HostPortal: - popHostContainer(workInProgress); - updateHostContainer(current, workInProgress); + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; + } - bubbleProperties(workInProgress); - return null; + popProvider(context, workInProgress); + bubbleProperties(workInProgress); + return null; - case ContextProvider: - // Pop provider fiber - var context; + case IncompleteClassComponent: + { + // sequential to ensure this switch is compiled to a jump table. - if (enableRenderableContext) { - context = workInProgress.type; - } else { - context = workInProgress.type._context; - } - popProvider(context, workInProgress); - bubbleProperties(workInProgress); - return null; + var _Component = workInProgress.type; - case IncompleteClassComponent: { - // sequential to ensure this switch is compiled to a jump table. + if (isContextProvider(_Component)) { + popContext(workInProgress); + } - var _Component = workInProgress.type; + bubbleProperties(workInProgress); + return null; + } - if (isContextProvider(_Component)) { - popContext(workInProgress); - } + case SuspenseListComponent: + { + popSuspenseListContext(workInProgress); + var renderState = workInProgress.memoizedState; + if (renderState === null) { + // We're running in the default, "independent" mode. + // We don't do anything in this mode. bubbleProperties(workInProgress); return null; } - case SuspenseListComponent: { - popSuspenseListContext(workInProgress); - var renderState = workInProgress.memoizedState; + var didSuspendAlready = (workInProgress.flags & DidCapture) !== NoFlags$1; + var renderedTail = renderState.rendering; + + if (renderedTail === null) { + // We just rendered the head. + if (!didSuspendAlready) { + // This is the first pass. We need to figure out if anything is still + // suspended in the rendered set. + // If new content unsuspended, but there's still some content that + // didn't. Then we need to do a second pass that forces everything + // to keep showing their fallbacks. + // We might be suspended if something in this render pass suspended, or + // something in the previous committed pass suspended. Otherwise, + // there's no chance so we can skip the expensive call to + // findFirstSuspended. + var cannotBeSuspended = renderHasNotSuspendedYet() && (current === null || (current.flags & DidCapture) === NoFlags$1); + + if (!cannotBeSuspended) { + var row = workInProgress.child; + + while (row !== null) { + var suspended = findFirstSuspended(row); + + if (suspended !== null) { + didSuspendAlready = true; + workInProgress.flags |= DidCapture; + cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as + // part of the second pass. In that case nothing will subscribe to + // its thenables. Instead, we'll transfer its thenables to the + // SuspenseList so that it can retry if they resolve. + // There might be multiple of these in the list but since we're + // going to wait for all of them anyway, it doesn't really matter + // which ones gets to ping. In theory we could get clever and keep + // track of how many dependencies remain but it gets tricky because + // in the meantime, we can add/remove/change items and dependencies. + // We might bail out of the loop before finding any but that + // doesn't matter since that means that the other boundaries that + // we did find already has their listeners attached. + + var _retryQueue = suspended.updateQueue; + workInProgress.updateQueue = _retryQueue; + scheduleRetryEffect(workInProgress, _retryQueue); // Rerender the whole list, but this time, we'll force fallbacks + // to stay in place. + // Reset the effect flags before doing the second pass since that's now invalid. + // Reset the child fibers to their original state. + + workInProgress.subtreeFlags = NoFlags$1; + resetChildFibers(workInProgress, renderLanes); // Set up the Suspense List Context to force suspense and + // immediately rerender the children. + + pushSuspenseListContext(workInProgress, setShallowSuspenseListContext(suspenseStackCursor.current, ForceSuspenseFallback)); // Don't bubble properties in this case. + + return workInProgress.child; + } - if (renderState === null) { - // We're running in the default, "independent" mode. - // We don't do anything in this mode. - bubbleProperties(workInProgress); - return null; - } + row = row.sibling; + } + } - var didSuspendAlready = - (workInProgress.flags & DidCapture) !== NoFlags$1; - var renderedTail = renderState.rendering; - - if (renderedTail === null) { - // We just rendered the head. - if (!didSuspendAlready) { - // This is the first pass. We need to figure out if anything is still - // suspended in the rendered set. - // If new content unsuspended, but there's still some content that - // didn't. Then we need to do a second pass that forces everything - // to keep showing their fallbacks. - // We might be suspended if something in this render pass suspended, or - // something in the previous committed pass suspended. Otherwise, - // there's no chance so we can skip the expensive call to - // findFirstSuspended. - var cannotBeSuspended = - renderHasNotSuspendedYet() && - (current === null || - (current.flags & DidCapture) === NoFlags$1); - - if (!cannotBeSuspended) { - var row = workInProgress.child; - - while (row !== null) { - var suspended = findFirstSuspended(row); - - if (suspended !== null) { - didSuspendAlready = true; - workInProgress.flags |= DidCapture; - cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as - // part of the second pass. In that case nothing will subscribe to - // its thenables. Instead, we'll transfer its thenables to the - // SuspenseList so that it can retry if they resolve. - // There might be multiple of these in the list but since we're - // going to wait for all of them anyway, it doesn't really matter - // which ones gets to ping. In theory we could get clever and keep - // track of how many dependencies remain but it gets tricky because - // in the meantime, we can add/remove/change items and dependencies. - // We might bail out of the loop before finding any but that - // doesn't matter since that means that the other boundaries that - // we did find already has their listeners attached. - - var _retryQueue = suspended.updateQueue; - workInProgress.updateQueue = _retryQueue; - scheduleRetryEffect(workInProgress, _retryQueue); // Rerender the whole list, but this time, we'll force fallbacks - // to stay in place. - // Reset the effect flags before doing the second pass since that's now invalid. - // Reset the child fibers to their original state. - - workInProgress.subtreeFlags = NoFlags$1; - resetChildFibers(workInProgress, renderLanes); // Set up the Suspense List Context to force suspense and - // immediately rerender the children. - - pushSuspenseListContext( - workInProgress, - setShallowSuspenseListContext( - suspenseStackCursor.current, - ForceSuspenseFallback - ) - ); // Don't bubble properties in this case. - - return workInProgress.child; - } + if (renderState.tail !== null && now$1() > getRenderTargetTime()) { + // We have already passed our CPU deadline but we still have rows + // left in the tail. We'll just give up further attempts to render + // the main content and only render fallbacks. + workInProgress.flags |= DidCapture; + didSuspendAlready = true; + cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this + // to get it started back up to attempt the next item. While in terms + // of priority this work has the same priority as this current render, + // it's not part of the same transition once the transition has + // committed. If it's sync, we still want to yield so that it can be + // painted. Conceptually, this is really the same as pinging. + // We can use any RetryLane even if it's the one currently rendering + // since we're leaving it behind on this node. + + workInProgress.lanes = SomeRetryLane; + } + } else { + cutOffTailIfNeeded(renderState, false); + } // Next we're going to render the tail. - row = row.sibling; - } - } + } else { + // Append the rendered row to the child list. + if (!didSuspendAlready) { + var _suspended = findFirstSuspended(renderedTail); - if ( - renderState.tail !== null && - now$1() > getRenderTargetTime() + if (_suspended !== null) { + workInProgress.flags |= DidCapture; + didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't + // get lost if this row ends up dropped during a second pass. + + var _retryQueue2 = _suspended.updateQueue; + workInProgress.updateQueue = _retryQueue2; + scheduleRetryEffect(workInProgress, _retryQueue2); + cutOffTailIfNeeded(renderState, true); // This might have been modified. + + if (renderState.tail === null && renderState.tailMode === 'hidden' && !renderedTail.alternate && !getIsHydrating() // We don't cut it if we're hydrating. ) { - // We have already passed our CPU deadline but we still have rows - // left in the tail. We'll just give up further attempts to render - // the main content and only render fallbacks. - workInProgress.flags |= DidCapture; - didSuspendAlready = true; - cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this - // to get it started back up to attempt the next item. While in terms - // of priority this work has the same priority as this current render, - // it's not part of the same transition once the transition has - // committed. If it's sync, we still want to yield so that it can be - // painted. Conceptually, this is really the same as pinging. - // We can use any RetryLane even if it's the one currently rendering - // since we're leaving it behind on this node. - - workInProgress.lanes = SomeRetryLane; - } - } else { - cutOffTailIfNeeded(renderState, false); - } // Next we're going to render the tail. - } else { - // Append the rendered row to the child list. - if (!didSuspendAlready) { - var _suspended = findFirstSuspended(renderedTail); - - if (_suspended !== null) { - workInProgress.flags |= DidCapture; - didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't - // get lost if this row ends up dropped during a second pass. - - var _retryQueue2 = _suspended.updateQueue; - workInProgress.updateQueue = _retryQueue2; - scheduleRetryEffect(workInProgress, _retryQueue2); - cutOffTailIfNeeded(renderState, true); // This might have been modified. - - if ( - renderState.tail === null && - renderState.tailMode === "hidden" && - !renderedTail.alternate && - !getIsHydrating() // We don't cut it if we're hydrating. - ) { // We're done. bubbleProperties(workInProgress); return null; } - } else if ( - // The time it took to render last row is greater than the remaining - // time we have to render. So rendering one more row would likely - // exceed it. - now$1() * 2 - renderState.renderingStartTime > - getRenderTargetTime() && - renderLanes !== OffscreenLane - ) { - // We have now passed our CPU deadline and we'll just give up further - // attempts to render the main content and only render fallbacks. - // The assumption is that this is usually faster. - workInProgress.flags |= DidCapture; - didSuspendAlready = true; - cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this - // to get it started back up to attempt the next item. While in terms - // of priority this work has the same priority as this current render, - // it's not part of the same transition once the transition has - // committed. If it's sync, we still want to yield so that it can be - // painted. Conceptually, this is really the same as pinging. - // We can use any RetryLane even if it's the one currently rendering - // since we're leaving it behind on this node. - - workInProgress.lanes = SomeRetryLane; - } - } - - if (renderState.isBackwards) { - // The effect list of the backwards tail will have been added - // to the end. This breaks the guarantee that life-cycles fire in - // sibling order but that isn't a strong guarantee promised by React. - // Especially since these might also just pop in during future commits. - // Append to the beginning of the list. - renderedTail.sibling = workInProgress.child; - workInProgress.child = renderedTail; - } else { - var previousSibling = renderState.last; - - if (previousSibling !== null) { - previousSibling.sibling = renderedTail; - } else { - workInProgress.child = renderedTail; - } - - renderState.last = renderedTail; + } else if ( // The time it took to render last row is greater than the remaining + // time we have to render. So rendering one more row would likely + // exceed it. + now$1() * 2 - renderState.renderingStartTime > getRenderTargetTime() && renderLanes !== OffscreenLane) { + // We have now passed our CPU deadline and we'll just give up further + // attempts to render the main content and only render fallbacks. + // The assumption is that this is usually faster. + workInProgress.flags |= DidCapture; + didSuspendAlready = true; + cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this + // to get it started back up to attempt the next item. While in terms + // of priority this work has the same priority as this current render, + // it's not part of the same transition once the transition has + // committed. If it's sync, we still want to yield so that it can be + // painted. Conceptually, this is really the same as pinging. + // We can use any RetryLane even if it's the one currently rendering + // since we're leaving it behind on this node. + + workInProgress.lanes = SomeRetryLane; } } - if (renderState.tail !== null) { - // We still have tail rows to render. - // Pop a row. - var next = renderState.tail; - renderState.rendering = next; - renderState.tail = next.sibling; - renderState.renderingStartTime = now$1(); - next.sibling = null; // Restore the context. - // TODO: We can probably just avoid popping it instead and only - // setting it the first time we go from not suspended to suspended. - - var suspenseContext = suspenseStackCursor.current; - - if (didSuspendAlready) { - suspenseContext = setShallowSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); + if (renderState.isBackwards) { + // The effect list of the backwards tail will have been added + // to the end. This breaks the guarantee that life-cycles fire in + // sibling order but that isn't a strong guarantee promised by React. + // Especially since these might also just pop in during future commits. + // Append to the beginning of the list. + renderedTail.sibling = workInProgress.child; + workInProgress.child = renderedTail; + } else { + var previousSibling = renderState.last; + + if (previousSibling !== null) { + previousSibling.sibling = renderedTail; } else { - suspenseContext = - setDefaultShallowSuspenseListContext(suspenseContext); + workInProgress.child = renderedTail; } - pushSuspenseListContext(workInProgress, suspenseContext); // Do a pass over the next row. - // Don't bubble properties in this case. - - return next; + renderState.last = renderedTail; } - - bubbleProperties(workInProgress); - return null; - } - - case ScopeComponent: { - break; } - case OffscreenComponent: - case LegacyHiddenComponent: { - popSuspenseHandler(workInProgress); - popHiddenContext(workInProgress); - var _nextState = workInProgress.memoizedState; - var nextIsHidden = _nextState !== null; // Schedule a Visibility effect if the visibility has changed - - { - if (current !== null) { - var _prevState = current.memoizedState; - var prevIsHidden = _prevState !== null; + if (renderState.tail !== null) { + // We still have tail rows to render. + // Pop a row. + var next = renderState.tail; + renderState.rendering = next; + renderState.tail = next.sibling; + renderState.renderingStartTime = now$1(); + next.sibling = null; // Restore the context. + // TODO: We can probably just avoid popping it instead and only + // setting it the first time we go from not suspended to suspended. - if (prevIsHidden !== nextIsHidden) { - workInProgress.flags |= Visibility; - } - } else { - // On initial mount, we only need a Visibility effect if the tree - // is hidden. - if (nextIsHidden) { - workInProgress.flags |= Visibility; - } - } - } + var suspenseContext = suspenseStackCursor.current; - if ( - !nextIsHidden || - (workInProgress.mode & ConcurrentMode) === NoMode - ) { - bubbleProperties(workInProgress); + if (didSuspendAlready) { + suspenseContext = setShallowSuspenseListContext(suspenseContext, ForceSuspenseFallback); } else { - // Don't bubble properties for hidden children unless we're rendering - // at offscreen priority. - if ( - includesSomeLane(renderLanes, OffscreenLane) && // Also don't bubble if the tree suspended - (workInProgress.flags & DidCapture) === NoLanes - ) { - bubbleProperties(workInProgress); // Check if there was an insertion or update in the hidden subtree. - // If so, we need to hide those nodes in the commit phase, so - // schedule a visibility effect. - - if (workInProgress.subtreeFlags & (Placement | Update)) { - workInProgress.flags |= Visibility; - } - } + suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); } - var offscreenQueue = workInProgress.updateQueue; + pushSuspenseListContext(workInProgress, suspenseContext); // Do a pass over the next row. + // Don't bubble properties in this case. - if (offscreenQueue !== null) { - var _retryQueue3 = offscreenQueue.retryQueue; - scheduleRetryEffect(workInProgress, _retryQueue3); - } - - { - var _previousCache2 = null; - - if ( - current !== null && - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - _previousCache2 = current.memoizedState.cachePool.pool; - } + return next; + } - var _cache2 = null; + bubbleProperties(workInProgress); + return null; + } - if ( - workInProgress.memoizedState !== null && - workInProgress.memoizedState.cachePool !== null - ) { - _cache2 = workInProgress.memoizedState.cachePool.pool; - } + case ScopeComponent: + { - if (_cache2 !== _previousCache2) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } - } + break; + } - popTransition(workInProgress, current); - return null; - } + case OffscreenComponent: + case LegacyHiddenComponent: + { + popSuspenseHandler(workInProgress); + popHiddenContext(workInProgress); + var _nextState = workInProgress.memoizedState; + var nextIsHidden = _nextState !== null; // Schedule a Visibility effect if the visibility has changed - case CacheComponent: { - { - var _previousCache3 = null; + { + if (current !== null) { + var _prevState = current.memoizedState; + var prevIsHidden = _prevState !== null; - if (current !== null) { - _previousCache3 = current.memoizedState.cache; + if (prevIsHidden !== nextIsHidden) { + workInProgress.flags |= Visibility; } - - var _cache3 = workInProgress.memoizedState.cache; - - if (_cache3 !== _previousCache3) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; + } else { + // On initial mount, we only need a Visibility effect if the tree + // is hidden. + if (nextIsHidden) { + workInProgress.flags |= Visibility; } - - popCacheProvider(workInProgress); - bubbleProperties(workInProgress); } - - return null; - } - - case TracingMarkerComponent: { - return null; } - } - - throw new Error( - "Unknown unit of work tag (" + - workInProgress.tag + - "). This error is likely caused by a bug in " + - "React. Please file an issue." - ); - } - - function unwindWork(current, workInProgress, renderLanes) { - switch (workInProgress.tag) { - case ClassComponent: { - var Component = workInProgress.type; - if (isContextProvider(Component)) { - popContext(workInProgress); + if (!nextIsHidden || (workInProgress.mode & ConcurrentMode) === NoMode) { + bubbleProperties(workInProgress); + } else { + // Don't bubble properties for hidden children unless we're rendering + // at offscreen priority. + if (includesSomeLane(renderLanes, OffscreenLane) && // Also don't bubble if the tree suspended + (workInProgress.flags & DidCapture) === NoLanes) { + bubbleProperties(workInProgress); // Check if there was an insertion or update in the hidden subtree. + // If so, we need to hide those nodes in the commit phase, so + // schedule a visibility effect. + + if (workInProgress.subtreeFlags & (Placement | Update)) { + workInProgress.flags |= Visibility; + } } + } - var flags = workInProgress.flags; + var offscreenQueue = workInProgress.updateQueue; - if (flags & ShouldCapture) { - workInProgress.flags = (flags & ~ShouldCapture) | DidCapture; + if (offscreenQueue !== null) { + var _retryQueue3 = offscreenQueue.retryQueue; + scheduleRetryEffect(workInProgress, _retryQueue3); + } - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } + { + var _previousCache2 = null; - return workInProgress; + if (current !== null && current.memoizedState !== null && current.memoizedState.cachePool !== null) { + _previousCache2 = current.memoizedState.cachePool.pool; } - return null; - } + var _cache2 = null; - case HostRoot: { - { - popCacheProvider(workInProgress); + if (workInProgress.memoizedState !== null && workInProgress.memoizedState.cachePool !== null) { + _cache2 = workInProgress.memoizedState.cachePool.pool; } - popHostContainer(workInProgress); - popTopLevelContextObject(workInProgress); - var _flags = workInProgress.flags; - - if ( - (_flags & ShouldCapture) !== NoFlags$1 && - (_flags & DidCapture) === NoFlags$1 - ) { - // There was an error during render that wasn't captured by a suspense - // boundary. Do a second pass on the root to unmount the children. - workInProgress.flags = (_flags & ~ShouldCapture) | DidCapture; - return workInProgress; - } // We unwound to the root without completing it. Exit. - return null; + if (_cache2 !== _previousCache2) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; + } } - case HostHoistable: - case HostSingleton: - case HostComponent: { - // TODO: popHydrationState - popHostContext(workInProgress); - return null; - } + popTransition(workInProgress, current); + return null; + } - case SuspenseComponent: { - popSuspenseHandler(workInProgress); - var suspenseState = workInProgress.memoizedState; + case CacheComponent: + { + { + var _previousCache3 = null; - if (suspenseState !== null && suspenseState.dehydrated !== null) { - if (workInProgress.alternate === null) { - throw new Error( - "Threw in newly mounted dehydrated component. This is likely a bug in " + - "React. Please file an issue." - ); - } + if (current !== null) { + _previousCache3 = current.memoizedState.cache; } - var _flags2 = workInProgress.flags; - - if (_flags2 & ShouldCapture) { - workInProgress.flags = (_flags2 & ~ShouldCapture) | DidCapture; // Captured a suspense effect. Re-render the boundary. + var _cache3 = workInProgress.memoizedState.cache; - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } - - return workInProgress; + if (_cache3 !== _previousCache3) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; } - return null; + popCacheProvider(workInProgress); + bubbleProperties(workInProgress); } - case SuspenseListComponent: { - popSuspenseListContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been - // caught by a nested boundary. If not, it should bubble through. + return null; + } - return null; - } + case TracingMarkerComponent: + { - case HostPortal: - popHostContainer(workInProgress); - return null; + return null; + } + } - case ContextProvider: - var context; + throw new Error("Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + 'React. Please file an issue.'); +} - if (enableRenderableContext) { - context = workInProgress.type; - } else { - context = workInProgress.type._context; - } +function unwindWork(current, workInProgress, renderLanes) { - popProvider(context, workInProgress); - return null; + switch (workInProgress.tag) { + case ClassComponent: + { + var Component = workInProgress.type; - case OffscreenComponent: - case LegacyHiddenComponent: { - popSuspenseHandler(workInProgress); - popHiddenContext(workInProgress); - popTransition(workInProgress, current); - var _flags3 = workInProgress.flags; + if (isContextProvider(Component)) { + popContext(workInProgress); + } - if (_flags3 & ShouldCapture) { - workInProgress.flags = (_flags3 & ~ShouldCapture) | DidCapture; // Captured a suspense effect. Re-render the boundary. + var flags = workInProgress.flags; - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } + if (flags & ShouldCapture) { + workInProgress.flags = flags & ~ShouldCapture | DidCapture; - return workInProgress; + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - return null; + return workInProgress; } - case CacheComponent: - { - popCacheProvider(workInProgress); - } + return null; + } - return null; + case HostRoot: + { - case TracingMarkerComponent: - return null; + { + popCacheProvider(workInProgress); + } + popHostContainer(workInProgress); + popTopLevelContextObject(workInProgress); + var _flags = workInProgress.flags; - default: - return null; + if ((_flags & ShouldCapture) !== NoFlags$1 && (_flags & DidCapture) === NoFlags$1) { + // There was an error during render that wasn't captured by a suspense + // boundary. Do a second pass on the root to unmount the children. + workInProgress.flags = _flags & ~ShouldCapture | DidCapture; + return workInProgress; + } // We unwound to the root without completing it. Exit. + + + return null; } - } - function unwindInterruptedWork(current, interruptedWork, renderLanes) { - switch (interruptedWork.tag) { - case ClassComponent: { - var childContextTypes = interruptedWork.type.childContextTypes; + case HostHoistable: + case HostSingleton: + case HostComponent: + { + // TODO: popHydrationState + popHostContext(workInProgress); + return null; + } - if (childContextTypes !== null && childContextTypes !== undefined) { - popContext(interruptedWork); - } + case SuspenseComponent: + { + popSuspenseHandler(workInProgress); + var suspenseState = workInProgress.memoizedState; - break; + if (suspenseState !== null && suspenseState.dehydrated !== null) { + if (workInProgress.alternate === null) { + throw new Error('Threw in newly mounted dehydrated component. This is likely a bug in ' + 'React. Please file an issue.'); + } } - case HostRoot: { - { - popCacheProvider(interruptedWork); + var _flags2 = workInProgress.flags; + + if (_flags2 & ShouldCapture) { + workInProgress.flags = _flags2 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary. + + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - popHostContainer(interruptedWork); - popTopLevelContextObject(interruptedWork); - break; - } - case HostHoistable: - case HostSingleton: - case HostComponent: { - popHostContext(interruptedWork); - break; + return workInProgress; } - case HostPortal: - popHostContainer(interruptedWork); - break; + return null; + } - case SuspenseComponent: - popSuspenseHandler(interruptedWork); - break; + case SuspenseListComponent: + { + popSuspenseListContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been + // caught by a nested boundary. If not, it should bubble through. - case SuspenseListComponent: - popSuspenseListContext(interruptedWork); - break; + return null; + } - case ContextProvider: - var context; + case HostPortal: + popHostContainer(workInProgress); + return null; - if (enableRenderableContext) { - context = interruptedWork.type; - } else { - context = interruptedWork.type._context; - } + case ContextProvider: + var context; - popProvider(context, interruptedWork); - break; + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; + } - case OffscreenComponent: - case LegacyHiddenComponent: - popSuspenseHandler(interruptedWork); - popHiddenContext(interruptedWork); - popTransition(interruptedWork, current); - break; + popProvider(context, workInProgress); + return null; - case CacheComponent: - { - popCacheProvider(interruptedWork); - } + case OffscreenComponent: + case LegacyHiddenComponent: + { + popSuspenseHandler(workInProgress); + popHiddenContext(workInProgress); + popTransition(workInProgress, current); + var _flags3 = workInProgress.flags; - break; - } - } + if (_flags3 & ShouldCapture) { + workInProgress.flags = _flags3 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary. - var didWarnAboutUndefinedSnapshotBeforeUpdate = null; + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); + } - { - didWarnAboutUndefinedSnapshotBeforeUpdate = new Set(); - } // Used during the commit phase to track the state of the Offscreen component stack. - // Allows us to avoid traversing the return path to find the nearest Offscreen ancestor. - - var offscreenSubtreeIsHidden = false; - var offscreenSubtreeWasHidden = false; // Used to track if a form needs to be reset at the end of the mutation phase. - var PossiblyWeakSet = typeof WeakSet === "function" ? WeakSet : Set; - var nextEffect = null; // Used for Profiling builds to track updaters. - - var inProgressLanes = null; - var inProgressRoot = null; - - function shouldProfile(current) { - return ( - (current.mode & ProfileMode) !== NoMode && - (getExecutionContext() & CommitContext) !== NoContext - ); - } - - function callComponentWillUnmountWithTimer(current, instance) { - instance.props = resolveClassComponentProps( - current.type, - current.memoizedProps, - current.elementType === current.type - ); - instance.state = current.memoizedState; - - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - instance.componentWillUnmount(); - } finally { - recordLayoutEffectDuration(current); + return workInProgress; } - } else { - instance.componentWillUnmount(); - } - } // Capture errors so they don't interrupt unmounting. - function safelyCallComponentWillUnmount( - current, - nearestMountedAncestor, - instance - ) { - try { - callComponentWillUnmountWithTimer(current, instance); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + return null; } - } // Capture errors so they don't interrupt mounting. - function safelyAttachRef(current, nearestMountedAncestor) { - try { - commitAttachRef(current); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + case CacheComponent: + { + popCacheProvider(workInProgress); } - } - function safelyDetachRef(current, nearestMountedAncestor) { - var ref = current.ref; - var refCleanup = current.refCleanup; + return null; - if (ref !== null) { - if (typeof refCleanup === "function") { - try { - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - refCleanup(); - } finally { - recordLayoutEffectDuration(current); - } - } else { - refCleanup(); - } - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); - } finally { - // `refCleanup` has been called. Nullify all references to it to prevent double invocation. - current.refCleanup = null; - var finishedWork = current.alternate; + case TracingMarkerComponent: - if (finishedWork != null) { - finishedWork.refCleanup = null; - } - } - } else if (typeof ref === "function") { - var retVal; + return null; - try { - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - retVal = ref(null); - } finally { - recordLayoutEffectDuration(current); - } - } else { - retVal = ref(null); - } - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); - } + default: + return null; + } +} - { - if (typeof retVal === "function") { - error( - "Unexpected return value from a callback ref in %s. " + - "A callback ref should not return a function.", - getComponentNameFromFiber(current) - ); - } - } - } else { - // $FlowFixMe[incompatible-use] unable to narrow type to RefObject - ref.current = null; +function unwindInterruptedWork(current, interruptedWork, renderLanes) { + + switch (interruptedWork.tag) { + case ClassComponent: + { + var childContextTypes = interruptedWork.type.childContextTypes; + + if (childContextTypes !== null && childContextTypes !== undefined) { + popContext(interruptedWork); } + + break; } - } - function safelyCallDestroy(current, nearestMountedAncestor, destroy) { - try { - destroy(); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + case HostRoot: + { + + { + popCacheProvider(interruptedWork); + } + popHostContainer(interruptedWork); + popTopLevelContextObject(interruptedWork); + break; } - } - var shouldFireAfterActiveInstanceBlur = false; - function commitBeforeMutationEffects(root, firstChild) { - nextEffect = firstChild; - commitBeforeMutationEffects_begin(); // We no longer need to track the active instance fiber - var shouldFire = shouldFireAfterActiveInstanceBlur; - shouldFireAfterActiveInstanceBlur = false; - return shouldFire; - } + case HostHoistable: + case HostSingleton: + case HostComponent: + { + popHostContext(interruptedWork); + break; + } - function commitBeforeMutationEffects_begin() { - while (nextEffect !== null) { - var fiber = nextEffect; // This phase is only used for beforeActiveInstanceBlur. + case HostPortal: + popHostContainer(interruptedWork); + break; - var child = fiber.child; + case SuspenseComponent: + popSuspenseHandler(interruptedWork); + break; - if ( - (fiber.subtreeFlags & BeforeMutationMask) !== NoFlags$1 && - child !== null - ) { - child.return = fiber; - nextEffect = child; - } else { - commitBeforeMutationEffects_complete(); - } - } - } + case SuspenseListComponent: + popSuspenseListContext(interruptedWork); + break; - function commitBeforeMutationEffects_complete() { - while (nextEffect !== null) { - var fiber = nextEffect; - setCurrentFiber(fiber); + case ContextProvider: + var context; - try { - commitBeforeMutationEffectsOnFiber(fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } + if (enableRenderableContext) { + context = interruptedWork.type; + } else { + context = interruptedWork.type._context; + } - resetCurrentFiber(); - var sibling = fiber.sibling; + popProvider(context, interruptedWork); + break; - if (sibling !== null) { - sibling.return = fiber.return; - nextEffect = sibling; - return; - } + case OffscreenComponent: + case LegacyHiddenComponent: + popSuspenseHandler(interruptedWork); + popHiddenContext(interruptedWork); + popTransition(interruptedWork, current); + break; - nextEffect = fiber.return; + case CacheComponent: + { + popCacheProvider(interruptedWork); } - } - function commitBeforeMutationEffectsOnFiber(finishedWork) { - var current = finishedWork.alternate; - var flags = finishedWork.flags; + break; + } +} - if ((flags & Snapshot) !== NoFlags$1) { - setCurrentFiber(finishedWork); - } +var didWarnAboutUndefinedSnapshotBeforeUpdate = null; - switch (finishedWork.tag) { - case FunctionComponent: { - break; - } +{ + didWarnAboutUndefinedSnapshotBeforeUpdate = new Set(); +} // Used during the commit phase to track the state of the Offscreen component stack. +// Allows us to avoid traversing the return path to find the nearest Offscreen ancestor. - case ForwardRef: - case SimpleMemoComponent: { - break; - } - case ClassComponent: { - if ((flags & Snapshot) !== NoFlags$1) { - if (current !== null) { - var prevProps = current.memoizedProps; - var prevState = current.memoizedState; - var instance = finishedWork.stateNode; // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. +var offscreenSubtreeIsHidden = false; +var offscreenSubtreeWasHidden = false; // Used to track if a form needs to be reset at the end of the mutation phase. +var PossiblyWeakSet = typeof WeakSet === 'function' ? WeakSet : Set; +var nextEffect = null; // Used for Profiling builds to track updaters. - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "getSnapshotBeforeUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } +var inProgressLanes = null; +var inProgressRoot = null; - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "getSnapshotBeforeUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } - } - } +function shouldProfile(current) { + return (current.mode & ProfileMode) !== NoMode && (getExecutionContext() & CommitContext) !== NoContext; +} - var snapshot = instance.getSnapshotBeforeUpdate( - resolveClassComponentProps( - finishedWork.type, - prevProps, - finishedWork.elementType === finishedWork.type - ), - prevState - ); +function callComponentWillUnmountWithTimer(current, instance) { + instance.props = resolveClassComponentProps(current.type, current.memoizedProps, current.elementType === current.type); + instance.state = current.memoizedState; + + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + instance.componentWillUnmount(); + } finally { + recordLayoutEffectDuration(current); + } + } else { + instance.componentWillUnmount(); + } +} // Capture errors so they don't interrupt unmounting. + + +function safelyCallComponentWillUnmount(current, nearestMountedAncestor, instance) { + try { + callComponentWillUnmountWithTimer(current, instance); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} // Capture errors so they don't interrupt mounting. + + +function safelyAttachRef(current, nearestMountedAncestor) { + try { + commitAttachRef(current); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} - { - var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate; - - if ( - snapshot === undefined && - !didWarnSet.has(finishedWork.type) - ) { - didWarnSet.add(finishedWork.type); - - error( - "%s.getSnapshotBeforeUpdate(): A snapshot value (or null) " + - "must be returned. You have returned undefined.", - getComponentNameFromFiber(finishedWork) - ); - } - } +function safelyDetachRef(current, nearestMountedAncestor) { + var ref = current.ref; + var refCleanup = current.refCleanup; - instance.__reactInternalSnapshotBeforeUpdate = snapshot; - } + if (ref !== null) { + if (typeof refCleanup === 'function') { + try { + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + refCleanup(); + } finally { + recordLayoutEffectDuration(current); } - - break; + } else { + refCleanup(); } + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } finally { + // `refCleanup` has been called. Nullify all references to it to prevent double invocation. + current.refCleanup = null; + var finishedWork = current.alternate; - case HostRoot: { - break; + if (finishedWork != null) { + finishedWork.refCleanup = null; } + } + } else if (typeof ref === 'function') { + var retVal; - case HostComponent: - case HostHoistable: - case HostSingleton: - case HostText: - case HostPortal: - case IncompleteClassComponent: - // Nothing to do for these component types - break; - - default: { - if ((flags & Snapshot) !== NoFlags$1) { - throw new Error( - "This unit of work tag should not have side-effects. This error is " + - "likely caused by a bug in React. Please file an issue." - ); + try { + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + retVal = ref(null); + } finally { + recordLayoutEffectDuration(current); } + } else { + retVal = ref(null); } + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); } - if ((flags & Snapshot) !== NoFlags$1) { - resetCurrentFiber(); + { + if (typeof retVal === 'function') { + error('Unexpected return value from a callback ref in %s. ' + 'A callback ref should not return a function.', getComponentNameFromFiber(current)); + } } + } else { + // $FlowFixMe[incompatible-use] unable to narrow type to RefObject + ref.current = null; } + } +} - function commitHookEffectListUnmount( - flags, - finishedWork, - nearestMountedAncestor - ) { - var updateQueue = finishedWork.updateQueue; - var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; - - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; - - do { - if ((effect.tag & flags) === flags) { - // Unmount - var inst = effect.inst; - var destroy = inst.destroy; +function safelyCallDestroy(current, nearestMountedAncestor, destroy) { + try { + destroy(); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} +var shouldFireAfterActiveInstanceBlur = false; +function commitBeforeMutationEffects(root, firstChild) { + nextEffect = firstChild; + commitBeforeMutationEffects_begin(); // We no longer need to track the active instance fiber + + var shouldFire = shouldFireAfterActiveInstanceBlur; + shouldFireAfterActiveInstanceBlur = false; + return shouldFire; +} - if (destroy !== undefined) { - inst.destroy = undefined; +function commitBeforeMutationEffects_begin() { + while (nextEffect !== null) { + var fiber = nextEffect; // This phase is only used for beforeActiveInstanceBlur. - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectUnmountStarted(finishedWork); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectUnmountStarted(finishedWork); - } - } + var child = fiber.child; - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(true); - } - } + if ((fiber.subtreeFlags & BeforeMutationMask) !== NoFlags$1 && child !== null) { + child.return = fiber; + nextEffect = child; + } else { + commitBeforeMutationEffects_complete(); + } + } +} - safelyCallDestroy(finishedWork, nearestMountedAncestor, destroy); +function commitBeforeMutationEffects_complete() { + while (nextEffect !== null) { + var fiber = nextEffect; + setCurrentFiber(fiber); - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(false); - } - } + try { + commitBeforeMutationEffectsOnFiber(fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectUnmountStopped(); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectUnmountStopped(); - } - } - } - } + resetCurrentFiber(); + var sibling = fiber.sibling; - effect = effect.next; - } while (effect !== firstEffect); - } + if (sibling !== null) { + sibling.return = fiber.return; + nextEffect = sibling; + return; } - function commitHookEffectListMount(flags, finishedWork) { - var updateQueue = finishedWork.updateQueue; - var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; - - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; + nextEffect = fiber.return; + } +} - do { - if ((effect.tag & flags) === flags) { - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectMountStarted(finishedWork); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectMountStarted(finishedWork); - } - } // Mount +function commitBeforeMutationEffectsOnFiber(finishedWork) { + var current = finishedWork.alternate; + var flags = finishedWork.flags; - var create = effect.create; + if ((flags & Snapshot) !== NoFlags$1) { + setCurrentFiber(finishedWork); + } - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(true); - } - } + switch (finishedWork.tag) { + case FunctionComponent: + { - var inst = effect.inst; - var destroy = create(); - inst.destroy = destroy; + break; + } - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(false); - } - } + case ForwardRef: + case SimpleMemoComponent: + { + break; + } - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectMountStopped(); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectMountStopped(); - } - } + case ClassComponent: + { + if ((flags & Snapshot) !== NoFlags$1) { + if (current !== null) { + var prevProps = current.memoizedProps; + var prevState = current.memoizedState; + var instance = finishedWork.stateNode; // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. { - if (destroy !== undefined && typeof destroy !== "function") { - var hookName = void 0; - - if ((effect.tag & Layout) !== NoFlags$1) { - hookName = "useLayoutEffect"; - } else if ((effect.tag & Insertion) !== NoFlags$1) { - hookName = "useInsertionEffect"; - } else { - hookName = "useEffect"; + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - var addendum = void 0; - - if (destroy === null) { - addendum = - " You returned null. If your effect does not require clean " + - "up, return undefined (or nothing)."; - } else if (typeof destroy.then === "function") { - addendum = - "\n\nIt looks like you wrote " + - hookName + - "(async () => ...) or returned a Promise. " + - "Instead, write the async function inside your effect " + - "and call it immediately:\n\n" + - hookName + - "(() => {\n" + - " async function fetchData() {\n" + - " // You can await here\n" + - " const response = await MyAPI.getData(someId);\n" + - " // ...\n" + - " }\n" + - " fetchData();\n" + - "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + - "Learn more about data fetching with Hooks: https://react.dev/link/hooks-data-fetching"; - } else { - addendum = " You returned: " + destroy; + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - - error( - "%s must not return anything besides a function, " + - "which is used for clean-up.%s", - hookName, - addendum - ); } } - } - - effect = effect.next; - } while (effect !== firstEffect); - } - } - - function commitPassiveEffectDurations(finishedRoot, finishedWork) { - if (getExecutionContext() & CommitContext) { - // Only Profilers with work in their subtree will have an Update effect scheduled. - if ((finishedWork.flags & Update) !== NoFlags$1) { - switch (finishedWork.tag) { - case Profiler: { - var passiveEffectDuration = - finishedWork.stateNode.passiveEffectDuration; - var _finishedWork$memoize = finishedWork.memoizedProps, - id = _finishedWork$memoize.id, - onPostCommit = _finishedWork$memoize.onPostCommit; // This value will still reflect the previous commit phase. - // It does not get reset until the start of the next commit phase. - var commitTime = getCommitTime(); - var phase = finishedWork.alternate === null ? "mount" : "update"; + var snapshot = instance.getSnapshotBeforeUpdate(resolveClassComponentProps(finishedWork.type, prevProps, finishedWork.elementType === finishedWork.type), prevState); - { - if (isCurrentUpdateNested()) { - phase = "nested-update"; - } - } + { + var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate; - if (typeof onPostCommit === "function") { - onPostCommit(id, phase, passiveEffectDuration, commitTime); - } // Bubble times to the next nearest ancestor Profiler. - // After we process that Profiler, we'll bubble further up. - - var parentFiber = finishedWork.return; - - outer: while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; - root.passiveEffectDuration += passiveEffectDuration; - break outer; - - case Profiler: - var parentStateNode = parentFiber.stateNode; - parentStateNode.passiveEffectDuration += - passiveEffectDuration; - break outer; - } + if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) { + didWarnSet.add(finishedWork.type); - parentFiber = parentFiber.return; + error('%s.getSnapshotBeforeUpdate(): A snapshot value (or null) ' + 'must be returned. You have returned undefined.', getComponentNameFromFiber(finishedWork)); } - - break; } + + instance.__reactInternalSnapshotBeforeUpdate = snapshot; } } + + break; } - } - function commitHookLayoutEffects(finishedWork, hookFlags) { - // At this point layout effects have already been destroyed (during mutation phase). - // This is done to prevent sibling component effects from interfering with each other, - // e.g. a destroy function in one component should never override a ref set - // by a create function in another component during the same commit. - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + case HostRoot: + { - recordLayoutEffectDuration(finishedWork); - } else { - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + break; } - } - function commitClassLayoutLifecycles(finishedWork, current) { - var instance = finishedWork.stateNode; + case HostComponent: + case HostHoistable: + case HostSingleton: + case HostText: + case HostPortal: + case IncompleteClassComponent: + // Nothing to do for these component types + break; - if (current === null) { - // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "componentDidMount. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } - - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "componentDidMount. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } - } + default: + { + if ((flags & Snapshot) !== NoFlags$1) { + throw new Error('This unit of work tag should not have side-effects. This error is ' + 'likely caused by a bug in React. Please file an issue.'); } + } + } - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + if ((flags & Snapshot) !== NoFlags$1) { + resetCurrentFiber(); + } +} - recordLayoutEffectDuration(finishedWork); - } else { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } - } else { - var prevProps = resolveClassComponentProps( - finishedWork.type, - current.memoizedProps, - finishedWork.elementType === finishedWork.type - ); - var prevState = current.memoizedState; // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. +function commitHookEffectListUnmount(flags, finishedWork, nearestMountedAncestor) { + var updateQueue = finishedWork.updateQueue; + var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "componentDidUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "componentDidUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } - } - } + do { + if ((effect.tag & flags) === flags) { + // Unmount + var inst = effect.inst; + var destroy = inst.destroy; - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - instance.componentDidUpdate( - prevProps, - prevState, - instance.__reactInternalSnapshotBeforeUpdate - ); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + if (destroy !== undefined) { + inst.destroy = undefined; - recordLayoutEffectDuration(finishedWork); - } else { - try { - instance.componentDidUpdate( - prevProps, - prevState, - instance.__reactInternalSnapshotBeforeUpdate - ); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectUnmountStarted(finishedWork); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectUnmountStarted(finishedWork); + } } - } - } - } - function commitClassCallbacks(finishedWork) { - // TODO: I think this is now always non-null by the time it reaches the - // commit phase. Consider removing the type check. - var updateQueue = finishedWork.updateQueue; + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(true); + } + } - if (updateQueue !== null) { - var instance = finishedWork.stateNode; + safelyCallDestroy(finishedWork, nearestMountedAncestor, destroy); - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "processing the update queue. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(false); } + } - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "processing the update queue. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectUnmountStopped(); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectUnmountStopped(); } } - } // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. - - try { - commitCallbacks(updateQueue, instance); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); } } - } - function commitHostComponentMount(finishedWork) { - var type = finishedWork.type; - var props = finishedWork.memoizedProps; - var instance = finishedWork.stateNode; + effect = effect.next; + } while (effect !== firstEffect); + } +} - try { - commitMount(instance, type, props, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } +function commitHookEffectListMount(flags, finishedWork) { + var updateQueue = finishedWork.updateQueue; + var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; - function commitProfilerUpdate(finishedWork, current) { - if (getExecutionContext() & CommitContext) { - try { - var _finishedWork$memoize2 = finishedWork.memoizedProps, - onCommit = _finishedWork$memoize2.onCommit, - onRender = _finishedWork$memoize2.onRender; - var effectDuration = finishedWork.stateNode.effectDuration; - var commitTime = getCommitTime(); - var phase = current === null ? "mount" : "update"; - - if (enableProfilerNestedUpdatePhase) { - if (isCurrentUpdateNested()) { - phase = "nested-update"; - } - } + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; - if (typeof onRender === "function") { - onRender( - finishedWork.memoizedProps.id, - phase, - finishedWork.actualDuration, - finishedWork.treeBaseDuration, - finishedWork.actualStartTime, - commitTime - ); + do { + if ((effect.tag & flags) === flags) { + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectMountStarted(finishedWork); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectMountStarted(finishedWork); } + } // Mount - if (enableProfilerCommitHooks) { - if (typeof onCommit === "function") { - onCommit( - finishedWork.memoizedProps.id, - phase, - effectDuration, - commitTime - ); - } // Schedule a passive effect for this Profiler to call onPostCommit hooks. - // This effect should be scheduled even if there is no onPostCommit callback for this Profiler, - // because the effect is also where times bubble to parent Profilers. - - enqueuePendingPassiveProfilerEffect(finishedWork); // Propagate layout effect durations to the next nearest Profiler ancestor. - // Do not reset these values until the next render so DevTools has a chance to read them first. - - var parentFiber = finishedWork.return; - - outer: while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; - root.effectDuration += effectDuration; - break outer; - case Profiler: - var parentStateNode = parentFiber.stateNode; - parentStateNode.effectDuration += effectDuration; - break outer; - } + var create = effect.create; - parentFiber = parentFiber.return; - } + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(true); } - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); } - } - } - - function commitLayoutEffectOnFiber( - finishedRoot, - current, - finishedWork, - committedLanes - ) { - // When updating this function, also update reappearLayoutEffects, which does - // most of the same things when an offscreen tree goes from hidden -> visible. - var flags = finishedWork.flags; - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + var inst = effect.inst; + var destroy = create(); + inst.destroy = destroy; - if (flags & Update) { - commitHookLayoutEffects(finishedWork, Layout | HasEffect); + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(false); } - - break; } - case ClassComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - - if (flags & Update) { - commitClassLayoutLifecycles(finishedWork, current); - } - - if (flags & Callback) { - commitClassCallbacks(finishedWork); - } - - if (flags & Ref) { - safelyAttachRef(finishedWork, finishedWork.return); + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectMountStopped(); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectMountStopped(); } - - break; } - case HostRoot: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - - if (flags & Callback) { - // TODO: I think this is now always non-null by the time it reaches the - // commit phase. Consider removing the type check. - var updateQueue = finishedWork.updateQueue; - - if (updateQueue !== null) { - var instance = null; + { + if (destroy !== undefined && typeof destroy !== 'function') { + var hookName = void 0; - if (finishedWork.child !== null) { - switch (finishedWork.child.tag) { - case HostSingleton: - case HostComponent: - instance = getPublicInstance(finishedWork.child.stateNode); - break; + if ((effect.tag & Layout) !== NoFlags$1) { + hookName = 'useLayoutEffect'; + } else if ((effect.tag & Insertion) !== NoFlags$1) { + hookName = 'useInsertionEffect'; + } else { + hookName = 'useEffect'; + } - case ClassComponent: - instance = finishedWork.child.stateNode; - break; - } - } + var addendum = void 0; - try { - commitCallbacks(updateQueue, instance); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } + if (destroy === null) { + addendum = ' You returned null. If your effect does not require clean ' + 'up, return undefined (or nothing).'; + } else if (typeof destroy.then === 'function') { + addendum = '\n\nIt looks like you wrote ' + hookName + '(async () => ...) or returned a Promise. ' + 'Instead, write the async function inside your effect ' + 'and call it immediately:\n\n' + hookName + '(() => {\n' + ' async function fetchData() {\n' + ' // You can await here\n' + ' const response = await MyAPI.getData(someId);\n' + ' // ...\n' + ' }\n' + ' fetchData();\n' + "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + 'Learn more about data fetching with Hooks: https://react.dev/link/hooks-data-fetching'; + } else { + addendum = ' You returned: ' + destroy; } - } - break; + error('%s must not return anything besides a function, ' + 'which is used for clean-up.%s', hookName, addendum); + } } + } - case HostHoistable: - - case HostSingleton: - case HostComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // Renderers may schedule work to be done after host components are mounted - // (eg DOM renderer may schedule auto-focus for inputs and form controls). - // These effects should only be committed when components are first mounted, - // aka when there is no current/alternate. - - if (current === null && flags & Update) { - commitHostComponentMount(finishedWork); - } + effect = effect.next; + } while (effect !== firstEffect); + } +} - if (flags & Ref) { - safelyAttachRef(finishedWork, finishedWork.return); - } +function commitPassiveEffectDurations(finishedRoot, finishedWork) { + if (getExecutionContext() & CommitContext) { + // Only Profilers with work in their subtree will have an Update effect scheduled. + if ((finishedWork.flags & Update) !== NoFlags$1) { + switch (finishedWork.tag) { + case Profiler: + { + var passiveEffectDuration = finishedWork.stateNode.passiveEffectDuration; + var _finishedWork$memoize = finishedWork.memoizedProps, + id = _finishedWork$memoize.id, + onPostCommit = _finishedWork$memoize.onPostCommit; // This value will still reflect the previous commit phase. + // It does not get reset until the start of the next commit phase. - break; - } + var commitTime = getCommitTime(); + var phase = finishedWork.alternate === null ? 'mount' : 'update'; - case Profiler: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // TODO: Should this fire inside an offscreen tree? Or should it wait to - // fire when the tree becomes visible again. + { + if (isCurrentUpdateNested()) { + phase = 'nested-update'; + } + } - if (flags & Update) { - commitProfilerUpdate(finishedWork, current); - } + if (typeof onPostCommit === 'function') { + onPostCommit(id, phase, passiveEffectDuration, commitTime); + } // Bubble times to the next nearest ancestor Profiler. + // After we process that Profiler, we'll bubble further up. - break; - } - case SuspenseComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + var parentFiber = finishedWork.return; - break; - } + outer: while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + root.passiveEffectDuration += passiveEffectDuration; + break outer; - case OffscreenComponent: { - var isModernRoot = (finishedWork.mode & ConcurrentMode) !== NoMode; - - if (isModernRoot) { - var isHidden = finishedWork.memoizedState !== null; - var newOffscreenSubtreeIsHidden = - isHidden || offscreenSubtreeIsHidden; - - if (newOffscreenSubtreeIsHidden); - else { - // The Offscreen tree is visible. - var wasHidden = - current !== null && current.memoizedState !== null; - var newOffscreenSubtreeWasHidden = - wasHidden || offscreenSubtreeWasHidden; - var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = newOffscreenSubtreeIsHidden; - offscreenSubtreeWasHidden = newOffscreenSubtreeWasHidden; - - if (offscreenSubtreeWasHidden && !prevOffscreenSubtreeWasHidden) { - // This is the root of a reappearing boundary. As we continue - // traversing the layout effects, we must also re-mount layout - // effects that were unmounted when the Offscreen subtree was - // hidden. So this is a superset of the normal commitLayoutEffects. - var includeWorkInProgressEffects = - (finishedWork.subtreeFlags & LayoutMask) !== NoFlags$1; - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - } else { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + case Profiler: + var parentStateNode = parentFiber.stateNode; + parentStateNode.passiveEffectDuration += passiveEffectDuration; + break outer; } - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + parentFiber = parentFiber.return; } - } else { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + + break; } + } + } + } +} - if (flags & Ref) { - var props = finishedWork.memoizedProps; +function commitHookLayoutEffects(finishedWork, hookFlags) { + // At this point layout effects have already been destroyed (during mutation phase). + // This is done to prevent sibling component effects from interfering with each other, + // e.g. a destroy function in one component should never override a ref set + // by a create function in another component during the same commit. + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + + recordLayoutEffectDuration(finishedWork); + } else { + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - if (props.mode === "manual") { - safelyAttachRef(finishedWork, finishedWork.return); - } else { - safelyDetachRef(finishedWork, finishedWork.return); - } - } +function commitClassLayoutLifecycles(finishedWork, current) { + var instance = finishedWork.stateNode; - break; + if (current === null) { + // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - default: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - break; + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } } } - function commitAttachRef(finishedWork) { - var ref = finishedWork.ref; - - if (ref !== null) { - var instance = finishedWork.stateNode; - var instanceToUse; - - switch (finishedWork.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - instanceToUse = getPublicInstance(instance); - break; + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - default: - instanceToUse = instance; - } // Moved outside to ensure DCE works with this flag + recordLayoutEffectDuration(finishedWork); + } else { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } + } else { + var prevProps = resolveClassComponentProps(finishedWork.type, current.memoizedProps, finishedWork.elementType === finishedWork.type); + var prevState = current.memoizedState; // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. - if (typeof ref === "function") { - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - finishedWork.refCleanup = ref(instanceToUse); - } finally { - recordLayoutEffectDuration(finishedWork); - } - } else { - finishedWork.refCleanup = ref(instanceToUse); - } - } else { - { - // TODO: We should move these warnings to happen during the render - // phase (markRef). - if (!ref.hasOwnProperty("current")) { - error( - "Unexpected ref object provided for %s. " + - "Use either a ref-setter function or React.createRef().", - getComponentNameFromFiber(finishedWork) - ); - } - } // $FlowFixMe[incompatible-use] unable to narrow type to the non-function case + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } - ref.current = instanceToUse; + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } } } - function detachFiberMutation(fiber) { - // Cut off the return pointer to disconnect it from the tree. - // This enables us to detect and warn against state updates on an unmounted component. - // It also prevents events from bubbling from within disconnected components. - // - // Ideally, we should also clear the child pointer of the parent alternate to let this - // get GC:ed but we don't know which for sure which parent is the current - // one so we'll settle for GC:ing the subtree of this child. - // This child itself will be GC:ed when the parent updates the next time. - // - // Note that we can't clear child or sibling pointers yet. - // They're needed for passive effects and for findDOMNode. - // We defer those fields, and all other cleanup, to the passive phase (see detachFiberAfterEffects). - // - // Don't reset the alternate yet, either. We need that so we can detach the - // alternate's fields in the passive phase. Clearing the return pointer is - // sufficient for findDOMNode semantics. - var alternate = fiber.alternate; - - if (alternate !== null) { - alternate.return = null; + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } - fiber.return = null; + recordLayoutEffectDuration(finishedWork); + } else { + try { + instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } } + } +} - function detachFiberAfterEffects(fiber) { - var alternate = fiber.alternate; - - if (alternate !== null) { - fiber.alternate = null; - detachFiberAfterEffects(alternate); - } // Clear cyclical Fiber fields. This level alone is designed to roughly - // approximate the planned Fiber refactor. In that world, `setState` will be - // bound to a special "instance" object instead of a Fiber. The Instance - // object will not have any of these fields. It will only be connected to - // the fiber tree via a single link at the root. So if this level alone is - // sufficient to fix memory issues, that bodes well for our plans. +function commitClassCallbacks(finishedWork) { + // TODO: I think this is now always non-null by the time it reaches the + // commit phase. Consider removing the type check. + var updateQueue = finishedWork.updateQueue; - fiber.child = null; - fiber.deletions = null; - fiber.sibling = null; // The `stateNode` is cyclical because on host nodes it points to the host + if (updateQueue !== null) { + var instance = finishedWork.stateNode; - fiber.stateNode = null; + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } - { - fiber._debugOwner = null; - } // Theoretically, nothing in here should be necessary, because we already - // disconnected the fiber from the tree. So even if something leaks this - // particular fiber, it won't leak anything else. + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } + } + } // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. - fiber.return = null; - fiber.dependencies = null; - fiber.memoizedProps = null; - fiber.memoizedState = null; - fiber.pendingProps = null; - fiber.stateNode = null; // TODO: Move to `commitPassiveUnmountInsideDeletedTreeOnFiber` instead. - fiber.updateQueue = null; + try { + commitCallbacks(updateQueue, instance); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } + } +} - function emptyPortalContainer(current) { - createContainerChildSet(); - } +function commitHostComponentMount(finishedWork) { + var type = finishedWork.type; + var props = finishedWork.memoizedProps; + var instance = finishedWork.stateNode; - function commitPlacement(finishedWork) { - { - return; + try { + commitMount(instance, type, props, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } +} + +function commitProfilerUpdate(finishedWork, current) { + if (getExecutionContext() & CommitContext) { + try { + var _finishedWork$memoize2 = finishedWork.memoizedProps, + onCommit = _finishedWork$memoize2.onCommit, + onRender = _finishedWork$memoize2.onRender; + var effectDuration = finishedWork.stateNode.effectDuration; + var commitTime = getCommitTime(); + var phase = current === null ? 'mount' : 'update'; + + if (enableProfilerNestedUpdatePhase) { + if (isCurrentUpdateNested()) { + phase = 'nested-update'; + } } - } - function commitDeletionEffects(root, returnFiber, deletedFiber) { - { - // Detach refs and call componentWillUnmount() on the whole subtree. - commitDeletionEffectsOnFiber(root, returnFiber, deletedFiber); + if (typeof onRender === 'function') { + onRender(finishedWork.memoizedProps.id, phase, finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, commitTime); } - detachFiberMutation(deletedFiber); - } + if (enableProfilerCommitHooks) { + if (typeof onCommit === 'function') { + onCommit(finishedWork.memoizedProps.id, phase, effectDuration, commitTime); + } // Schedule a passive effect for this Profiler to call onPostCommit hooks. + // This effect should be scheduled even if there is no onPostCommit callback for this Profiler, + // because the effect is also where times bubble to parent Profilers. - function recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - parent - ) { - // TODO: Use a static flag to skip trees that don't have unmount effects - var child = parent.child; - while (child !== null) { - commitDeletionEffectsOnFiber( - finishedRoot, - nearestMountedAncestor, - child - ); - child = child.sibling; - } - } + enqueuePendingPassiveProfilerEffect(finishedWork); // Propagate layout effect durations to the next nearest Profiler ancestor. + // Do not reset these values until the next render so DevTools has a chance to read them first. - function commitDeletionEffectsOnFiber( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ) { - onCommitUnmount(deletedFiber); // The cases in this outer switch modify the stack before they traverse - // into their subtree. There are simpler cases in the inner switch - // that don't modify the stack. + var parentFiber = finishedWork.return; - switch (deletedFiber.tag) { - case HostHoistable: + outer: while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + root.effectDuration += effectDuration; + break outer; - case HostSingleton: + case Profiler: + var parentStateNode = parentFiber.stateNode; + parentStateNode.effectDuration += effectDuration; + break outer; + } - case HostComponent: { - if (!offscreenSubtreeWasHidden) { - safelyDetachRef(deletedFiber, nearestMountedAncestor); - } // Intentional fallthrough to next branch + parentFiber = parentFiber.return; } + } + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - case HostText: { - // We only need to remove the nearest host child. Set the host parent - // to `null` on the stack to indicate that nested children don't - // need to be removed. - { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - } +function commitLayoutEffectOnFiber(finishedRoot, current, finishedWork, committedLanes) { + // When updating this function, also update reappearLayoutEffects, which does + // most of the same things when an offscreen tree goes from hidden -> visible. + var flags = finishedWork.flags; - return; - } + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - case DehydratedFragment: { - return; + if (flags & Update) { + commitHookLayoutEffects(finishedWork, Layout | HasEffect); } - case HostPortal: { - { - emptyPortalContainer(); - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - } + break; + } - return; + case ClassComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + + if (flags & Update) { + commitClassLayoutLifecycles(finishedWork, current); } - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - if (!offscreenSubtreeWasHidden) { - var updateQueue = deletedFiber.updateQueue; + if (flags & Callback) { + commitClassCallbacks(finishedWork); + } - if (updateQueue !== null) { - var lastEffect = updateQueue.lastEffect; + if (flags & Ref) { + safelyAttachRef(finishedWork, finishedWork.return); + } - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; + break; + } - do { - var tag = effect.tag; - var inst = effect.inst; - var destroy = inst.destroy; + case HostRoot: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - if (destroy !== undefined) { - if ((tag & Insertion) !== NoFlags) { - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - } else if ((tag & Layout) !== NoFlags) { - { - markComponentLayoutEffectUnmountStarted(deletedFiber); - } + if (flags & Callback) { + // TODO: I think this is now always non-null by the time it reaches the + // commit phase. Consider removing the type check. + var updateQueue = finishedWork.updateQueue; - if (shouldProfile(deletedFiber)) { - startLayoutEffectTimer(); - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - recordLayoutEffectDuration(deletedFiber); - } else { - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - } + if (updateQueue !== null) { + var instance = null; - { - markComponentLayoutEffectUnmountStopped(); - } - } - } + if (finishedWork.child !== null) { + switch (finishedWork.child.tag) { + case HostSingleton: + case HostComponent: + instance = getPublicInstance(finishedWork.child.stateNode); + break; - effect = effect.next; - } while (effect !== firstEffect); + case ClassComponent: + instance = finishedWork.child.stateNode; + break; } } - } - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; + try { + commitCallbacks(updateQueue, instance); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } } - case ClassComponent: { - if (!offscreenSubtreeWasHidden) { - safelyDetachRef(deletedFiber, nearestMountedAncestor); - var instance = deletedFiber.stateNode; + break; + } - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount( - deletedFiber, - nearestMountedAncestor, - instance - ); - } - } + case HostHoistable: - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; + case HostSingleton: + case HostComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // Renderers may schedule work to be done after host components are mounted + // (eg DOM renderer may schedule auto-focus for inputs and form controls). + // These effects should only be committed when components are first mounted, + // aka when there is no current/alternate. + + if (current === null && flags & Update) { + commitHostComponentMount(finishedWork); } - case ScopeComponent: { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; + if (flags & Ref) { + safelyAttachRef(finishedWork, finishedWork.return); } - case OffscreenComponent: { - safelyDetachRef(deletedFiber, nearestMountedAncestor); + break; + } - if (deletedFiber.mode & ConcurrentMode) { - // If this offscreen component is hidden, we already unmounted it. Before - // deleting the children, track that it's already unmounted so that we - // don't attempt to unmount the effects again. - // TODO: If the tree is hidden, in most cases we should be able to skip - // over the nested children entirely. An exception is we haven't yet found - // the topmost host node to delete, which we already track on the stack. - // But the other case is portals, which need to be detached no matter how - // deeply they are nested. We should use a subtree flag to track whether a - // subtree includes a nested portal. - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeWasHidden = - prevOffscreenSubtreeWasHidden || - deletedFiber.memoizedState !== null; - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; - } else { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - } + case Profiler: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // TODO: Should this fire inside an offscreen tree? Or should it wait to + // fire when the tree becomes visible again. - break; + if (flags & Update) { + commitProfilerUpdate(finishedWork, current); } - default: { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; - } + break; } - } - function commitSuspenseCallback(finishedWork) {} + case SuspenseComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - function getRetryCache(finishedWork) { - // TODO: Unify the interface for the retry cache so we don't have to switch - // on the tag like this. - switch (finishedWork.tag) { - case SuspenseComponent: - case SuspenseListComponent: { - var retryCache = finishedWork.stateNode; + break; + } - if (retryCache === null) { - retryCache = finishedWork.stateNode = new PossiblyWeakSet(); - } + case OffscreenComponent: + { + var isModernRoot = (finishedWork.mode & ConcurrentMode) !== NoMode; - return retryCache; - } + if (isModernRoot) { + var isHidden = finishedWork.memoizedState !== null; + var newOffscreenSubtreeIsHidden = isHidden || offscreenSubtreeIsHidden; - case OffscreenComponent: { - var instance = finishedWork.stateNode; - var _retryCache = instance._retryCache; + if (newOffscreenSubtreeIsHidden) ; else { + // The Offscreen tree is visible. + var wasHidden = current !== null && current.memoizedState !== null; + var newOffscreenSubtreeWasHidden = wasHidden || offscreenSubtreeWasHidden; + var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = newOffscreenSubtreeIsHidden; + offscreenSubtreeWasHidden = newOffscreenSubtreeWasHidden; + + if (offscreenSubtreeWasHidden && !prevOffscreenSubtreeWasHidden) { + // This is the root of a reappearing boundary. As we continue + // traversing the layout effects, we must also re-mount layout + // effects that were unmounted when the Offscreen subtree was + // hidden. So this is a superset of the normal commitLayoutEffects. + var includeWorkInProgressEffects = (finishedWork.subtreeFlags & LayoutMask) !== NoFlags$1; + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + } else { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + } - if (_retryCache === null) { - _retryCache = instance._retryCache = new PossiblyWeakSet(); + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; } - - return _retryCache; + } else { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); } - default: { - throw new Error( - "Unexpected Suspense handler tag (" + - finishedWork.tag + - "). This is a " + - "bug in React." - ); + if (flags & Ref) { + var props = finishedWork.memoizedProps; + + if (props.mode === 'manual') { + safelyAttachRef(finishedWork, finishedWork.return); + } else { + safelyDetachRef(finishedWork, finishedWork.return); + } } - } - } - function detachOffscreenInstance(instance) { - var fiber = instance._current; + break; + } - if (fiber === null) { - throw new Error( - "Calling Offscreen.detach before instance handle has been set." - ); + default: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + break; } + } +} - if ((instance._pendingVisibility & OffscreenDetached) !== NoFlags$1) { - // The instance is already detached, this is a noop. - return; - } // TODO: There is an opportunity to optimise this by not entering commit phase - // and unmounting effects directly. +function commitAttachRef(finishedWork) { + var ref = finishedWork.ref; - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (ref !== null) { + var instance = finishedWork.stateNode; + var instanceToUse; - if (root !== null) { - instance._pendingVisibility |= OffscreenDetached; - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - function attachOffscreenInstance(instance) { - var fiber = instance._current; + switch (finishedWork.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + instanceToUse = getPublicInstance(instance); + break; - if (fiber === null) { - throw new Error( - "Calling Offscreen.detach before instance handle has been set." - ); - } + default: + instanceToUse = instance; + } // Moved outside to ensure DCE works with this flag - if ((instance._pendingVisibility & OffscreenDetached) === NoFlags$1) { - // The instance is already attached, this is a noop. - return; + if (typeof ref === 'function') { + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + finishedWork.refCleanup = ref(instanceToUse); + } finally { + recordLayoutEffectDuration(finishedWork); + } + } else { + finishedWork.refCleanup = ref(instanceToUse); } + } else { + { + // TODO: We should move these warnings to happen during the render + // phase (markRef). + if (!ref.hasOwnProperty('current')) { + error('Unexpected ref object provided for %s. ' + 'Use either a ref-setter function or React.createRef().', getComponentNameFromFiber(finishedWork)); + } + } // $FlowFixMe[incompatible-use] unable to narrow type to the non-function case - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (root !== null) { - instance._pendingVisibility &= ~OffscreenDetached; - scheduleUpdateOnFiber(root, fiber, SyncLane); - } + ref.current = instanceToUse; } + } +} - function attachSuspenseRetryListeners(finishedWork, wakeables) { - // If this boundary just timed out, then it will have a set of wakeables. - // For each wakeable, attach a listener so that when it resolves, React - // attempts to re-render the boundary in the primary (pre-timeout) state. - var retryCache = getRetryCache(finishedWork); - wakeables.forEach(function (wakeable) { - // Memoize using the boundary fiber to prevent redundant listeners. - var retry = resolveRetryWakeable.bind(null, finishedWork, wakeable); +function detachFiberMutation(fiber) { + // Cut off the return pointer to disconnect it from the tree. + // This enables us to detect and warn against state updates on an unmounted component. + // It also prevents events from bubbling from within disconnected components. + // + // Ideally, we should also clear the child pointer of the parent alternate to let this + // get GC:ed but we don't know which for sure which parent is the current + // one so we'll settle for GC:ing the subtree of this child. + // This child itself will be GC:ed when the parent updates the next time. + // + // Note that we can't clear child or sibling pointers yet. + // They're needed for passive effects and for findDOMNode. + // We defer those fields, and all other cleanup, to the passive phase (see detachFiberAfterEffects). + // + // Don't reset the alternate yet, either. We need that so we can detach the + // alternate's fields in the passive phase. Clearing the return pointer is + // sufficient for findDOMNode semantics. + var alternate = fiber.alternate; + + if (alternate !== null) { + alternate.return = null; + } + + fiber.return = null; +} - if (!retryCache.has(wakeable)) { - retryCache.add(wakeable); +function detachFiberAfterEffects(fiber) { + var alternate = fiber.alternate; - { - if (isDevToolsPresent) { - if (inProgressLanes !== null && inProgressRoot !== null) { - // If we have pending work still, associate the original updaters with it. - restorePendingUpdaters(inProgressRoot, inProgressLanes); - } else { - throw Error( - "Expected finished root and lanes to be set. This is a bug in React." - ); - } - } - } + if (alternate !== null) { + fiber.alternate = null; + detachFiberAfterEffects(alternate); + } // Clear cyclical Fiber fields. This level alone is designed to roughly + // approximate the planned Fiber refactor. In that world, `setState` will be + // bound to a special "instance" object instead of a Fiber. The Instance + // object will not have any of these fields. It will only be connected to + // the fiber tree via a single link at the root. So if this level alone is + // sufficient to fix memory issues, that bodes well for our plans. - wakeable.then(retry, retry); - } - }); - } // This function detects when a Suspense boundary goes from visible to hidden. - function commitMutationEffects(root, finishedWork, committedLanes) { - inProgressLanes = committedLanes; - inProgressRoot = root; - setCurrentFiber(finishedWork); - commitMutationEffectsOnFiber(finishedWork, root); - setCurrentFiber(finishedWork); - inProgressLanes = null; - inProgressRoot = null; - } - - function recursivelyTraverseMutationEffects(root, parentFiber, lanes) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects hae fired. - var deletions = parentFiber.deletions; - - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; - try { - commitDeletionEffects(root, parentFiber, childToDelete); - } catch (error) { - captureCommitPhaseError(childToDelete, parentFiber, error); - } - } - } + fiber.child = null; + fiber.deletions = null; + fiber.sibling = null; // The `stateNode` is cyclical because on host nodes it points to the host - var prevDebugFiber = getCurrentFiber(); + fiber.stateNode = null; - if (parentFiber.subtreeFlags & MutationMask) { - var child = parentFiber.child; + { + fiber._debugOwner = null; + } // Theoretically, nothing in here should be necessary, because we already + // disconnected the fiber from the tree. So even if something leaks this + // particular fiber, it won't leak anything else. - while (child !== null) { - setCurrentFiber(child); - commitMutationEffectsOnFiber(child, root); - child = child.sibling; - } - } - setCurrentFiber(prevDebugFiber); - } + fiber.return = null; + fiber.dependencies = null; + fiber.memoizedProps = null; + fiber.memoizedState = null; + fiber.pendingProps = null; + fiber.stateNode = null; // TODO: Move to `commitPassiveUnmountInsideDeletedTreeOnFiber` instead. - function commitMutationEffectsOnFiber(finishedWork, root, lanes) { - var current = finishedWork.alternate; - var flags = finishedWork.flags; // The effect flag should be checked *after* we refine the type of fiber, - // because the fiber tag is more specific. An exception is any flag related - // to reconciliation, because those can be set on all fiber types. + fiber.updateQueue = null; +} - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); +function emptyPortalContainer(current) { + createContainerChildSet(); +} - if (flags & Update) { - try { - commitHookEffectListUnmount( - Insertion | HasEffect, - finishedWork, - finishedWork.return - ); - commitHookEffectListMount(Insertion | HasEffect, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } // Layout effects are destroyed during the mutation phase so that all - // destroy functions for all fibers are called before any create functions. - // This prevents sibling component effects from interfering with each other, - // e.g. a destroy function in one component should never override a ref set - // by a create function in another component during the same commit. +function commitPlacement(finishedWork) { + { + return; + } +} - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListUnmount( - Layout | HasEffect, - finishedWork, - finishedWork.return - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } +function commitDeletionEffects(root, returnFiber, deletedFiber) { + { + // Detach refs and call componentWillUnmount() on the whole subtree. + commitDeletionEffectsOnFiber(root, returnFiber, deletedFiber); + } - recordLayoutEffectDuration(finishedWork); - } else { - try { - commitHookEffectListUnmount( - Layout | HasEffect, - finishedWork, - finishedWork.return - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } + detachFiberMutation(deletedFiber); +} - return; - } +function recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, parent) { + // TODO: Use a static flag to skip trees that don't have unmount effects + var child = parent.child; + + while (child !== null) { + commitDeletionEffectsOnFiber(finishedRoot, nearestMountedAncestor, child); + child = child.sibling; + } +} + +function commitDeletionEffectsOnFiber(finishedRoot, nearestMountedAncestor, deletedFiber) { + onCommitUnmount(deletedFiber); // The cases in this outer switch modify the stack before they traverse + // into their subtree. There are simpler cases in the inner switch + // that don't modify the stack. - case ClassComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + switch (deletedFiber.tag) { + case HostHoistable: - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); - } - } + case HostSingleton: - if (flags & Callback && offscreenSubtreeIsHidden) { - var updateQueue = finishedWork.updateQueue; + case HostComponent: + { + if (!offscreenSubtreeWasHidden) { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + } // Intentional fallthrough to next branch - if (updateQueue !== null) { - deferHiddenCallbacks(updateQueue); - } - } + } - return; + case HostText: + { + // We only need to remove the nearest host child. Set the host parent + // to `null` on the stack to indicate that nested children don't + // need to be removed. + { + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); } - case HostHoistable: - - case HostSingleton: + return; + } - case HostComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + case DehydratedFragment: + { - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); - } - } + return; + } - return; + case HostPortal: + { + { + emptyPortalContainer(); + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); } - case HostText: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + return; + } - return; - } + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + if (!offscreenSubtreeWasHidden) { + var updateQueue = deletedFiber.updateQueue; - case HostRoot: { - { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); - } + if (updateQueue !== null) { + var lastEffect = updateQueue.lastEffect; + + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; + + do { + var tag = effect.tag; + var inst = effect.inst; + var destroy = inst.destroy; + + if (destroy !== undefined) { + if ((tag & Insertion) !== NoFlags) { + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + } else if ((tag & Layout) !== NoFlags) { + { + markComponentLayoutEffectUnmountStarted(deletedFiber); + } - if (flags & Update) { - { - var containerInfo = root.containerInfo; - var pendingChildren = root.pendingChildren; + if (shouldProfile(deletedFiber)) { + startLayoutEffectTimer(); + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + recordLayoutEffectDuration(deletedFiber); + } else { + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + } - try { - replaceContainerChildren(containerInfo, pendingChildren); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } + { + markComponentLayoutEffectUnmountStopped(); + } + } + } + + effect = effect.next; + } while (effect !== firstEffect); } } - - return; } - case HostPortal: { - { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); - } + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; + } - if (flags & Update) { - { - var portal = finishedWork.stateNode; - var _containerInfo = portal.containerInfo; - var _pendingChildren = portal.pendingChildren; + case ClassComponent: + { + if (!offscreenSubtreeWasHidden) { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + var instance = deletedFiber.stateNode; - try { - replaceContainerChildren(_containerInfo, _pendingChildren); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(deletedFiber, nearestMountedAncestor, instance); } - - return; } - case SuspenseComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); // TODO: We should mark a flag on the Suspense fiber itself, rather than - // relying on the Offscreen fiber having a flag also being marked. The - // reason is that this offscreen fiber might not be part of the work-in- - // progress tree! It could have been reused from a previous render. This - // doesn't lead to incorrect behavior because we don't rely on the flag - // check alone; we also compare the states explicitly below. But for - // modeling purposes, we _should_ be able to rely on the flag check alone. - // So this is a bit fragile. - // - // Also, all this logic could/should move to the passive phase so it - // doesn't block paint. + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; + } - var offscreenFiber = finishedWork.child; + case ScopeComponent: + { - if (offscreenFiber.flags & Visibility) { - // Throttle the appearance and disappearance of Suspense fallbacks. - var isShowingFallback = finishedWork.memoizedState !== null; - var wasShowingFallback = - current !== null && current.memoizedState !== null; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; + } - if (alwaysThrottleRetries) { - if (isShowingFallback !== wasShowingFallback) { - // A fallback is either appearing or disappearing. - markCommitTimeOfFallback(); - } - } else { - if (isShowingFallback && !wasShowingFallback) { - // Old behavior. Only mark when a fallback appears, not when - // it disappears. - markCommitTimeOfFallback(); - } - } - } + case OffscreenComponent: + { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + + if (deletedFiber.mode & ConcurrentMode) { + // If this offscreen component is hidden, we already unmounted it. Before + // deleting the children, track that it's already unmounted so that we + // don't attempt to unmount the effects again. + // TODO: If the tree is hidden, in most cases we should be able to skip + // over the nested children entirely. An exception is we haven't yet found + // the topmost host node to delete, which we already track on the stack. + // But the other case is portals, which need to be detached no matter how + // deeply they are nested. We should use a subtree flag to track whether a + // subtree includes a nested portal. + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden || deletedFiber.memoizedState !== null; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + } else { + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + } - if (flags & Update) { - try { - commitSuspenseCallback(finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + break; + } + + default: + { + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; + } + } +} - var retryQueue = finishedWork.updateQueue; +function commitSuspenseCallback(finishedWork) { +} - if (retryQueue !== null) { - finishedWork.updateQueue = null; - attachSuspenseRetryListeners(finishedWork, retryQueue); - } - } +function getRetryCache(finishedWork) { + // TODO: Unify the interface for the retry cache so we don't have to switch + // on the tag like this. + switch (finishedWork.tag) { + case SuspenseComponent: + case SuspenseListComponent: + { + var retryCache = finishedWork.stateNode; - return; + if (retryCache === null) { + retryCache = finishedWork.stateNode = new PossiblyWeakSet(); } - case OffscreenComponent: { - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); - } - } + return retryCache; + } - var newState = finishedWork.memoizedState; - var isHidden = newState !== null; - var wasHidden = current !== null && current.memoizedState !== null; + case OffscreenComponent: + { + var instance = finishedWork.stateNode; + var _retryCache = instance._retryCache; - if (finishedWork.mode & ConcurrentMode) { - // Before committing the children, track on the stack whether this - // offscreen subtree was already hidden, so that we don't unmount the - // effects again. - var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden || isHidden; - offscreenSubtreeWasHidden = - prevOffscreenSubtreeWasHidden || wasHidden; - recursivelyTraverseMutationEffects(root, finishedWork); - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; - } else { - recursivelyTraverseMutationEffects(root, finishedWork); - } + if (_retryCache === null) { + _retryCache = instance._retryCache = new PossiblyWeakSet(); + } - commitReconciliationEffects(finishedWork); - var offscreenInstance = finishedWork.stateNode; // TODO: Add explicit effect flag to set _current. + return _retryCache; + } - offscreenInstance._current = finishedWork; // Offscreen stores pending changes to visibility in `_pendingVisibility`. This is - // to support batching of `attach` and `detach` calls. + default: + { + throw new Error("Unexpected Suspense handler tag (" + finishedWork.tag + "). This is a " + 'bug in React.'); + } + } +} - offscreenInstance._visibility &= ~OffscreenDetached; - offscreenInstance._visibility |= - offscreenInstance._pendingVisibility & OffscreenDetached; +function detachOffscreenInstance(instance) { + var fiber = instance._current; - if (flags & Visibility) { - // Track the current state on the Offscreen instance so we can - // read it during an event - if (isHidden) { - offscreenInstance._visibility &= ~OffscreenVisible; - } else { - offscreenInstance._visibility |= OffscreenVisible; - } + if (fiber === null) { + throw new Error('Calling Offscreen.detach before instance handle has been set.'); + } - if (isHidden) { - var isUpdate = current !== null; - var wasHiddenByAncestorOffscreen = - offscreenSubtreeIsHidden || offscreenSubtreeWasHidden; // Only trigger disapper layout effects if: - // - This is an update, not first mount. - // - This Offscreen was not hidden before. - // - Ancestor Offscreen was not hidden in previous commit. - - if (isUpdate && !wasHidden && !wasHiddenByAncestorOffscreen) { - if ((finishedWork.mode & ConcurrentMode) !== NoMode) { - // Disappear the layout effects of all the children - recursivelyTraverseDisappearLayoutEffects(finishedWork); - } - } - } // Offscreen with manual mode manages visibility manually. - } // TODO: Move to passive phase + if ((instance._pendingVisibility & OffscreenDetached) !== NoFlags$1) { + // The instance is already detached, this is a noop. + return; + } // TODO: There is an opportunity to optimise this by not entering commit phase + // and unmounting effects directly. - if (flags & Update) { - var offscreenQueue = finishedWork.updateQueue; - if (offscreenQueue !== null) { - var _retryQueue = offscreenQueue.retryQueue; + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (_retryQueue !== null) { - offscreenQueue.retryQueue = null; - attachSuspenseRetryListeners(finishedWork, _retryQueue); - } - } - } + if (root !== null) { + instance._pendingVisibility |= OffscreenDetached; + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} +function attachOffscreenInstance(instance) { + var fiber = instance._current; - return; - } + if (fiber === null) { + throw new Error('Calling Offscreen.detach before instance handle has been set.'); + } - case SuspenseListComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + if ((instance._pendingVisibility & OffscreenDetached) === NoFlags$1) { + // The instance is already attached, this is a noop. + return; + } - if (flags & Update) { - var _retryQueue2 = finishedWork.updateQueue; + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (_retryQueue2 !== null) { - finishedWork.updateQueue = null; - attachSuspenseRetryListeners(finishedWork, _retryQueue2); - } - } + if (root !== null) { + instance._pendingVisibility &= ~OffscreenDetached; + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} - return; - } +function attachSuspenseRetryListeners(finishedWork, wakeables) { + // If this boundary just timed out, then it will have a set of wakeables. + // For each wakeable, attach a listener so that when it resolves, React + // attempts to re-render the boundary in the primary (pre-timeout) state. + var retryCache = getRetryCache(finishedWork); + wakeables.forEach(function (wakeable) { + // Memoize using the boundary fiber to prevent redundant listeners. + var retry = resolveRetryWakeable.bind(null, finishedWork, wakeable); - case ScopeComponent: { - return; - } + if (!retryCache.has(wakeable)) { + retryCache.add(wakeable); - default: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); - return; + { + if (isDevToolsPresent) { + if (inProgressLanes !== null && inProgressRoot !== null) { + // If we have pending work still, associate the original updaters with it. + restorePendingUpdaters(inProgressRoot, inProgressLanes); + } else { + throw Error('Expected finished root and lanes to be set. This is a bug in React.'); + } } } - } - function commitReconciliationEffects(finishedWork) { - // Placement effects (insertions, reorders) can be scheduled on any fiber - // type. They needs to happen after the children effects have fired, but - // before the effects on this fiber have fired. - var flags = finishedWork.flags; + wakeable.then(retry, retry); + } + }); +} // This function detects when a Suspense boundary goes from visible to hidden. +function commitMutationEffects(root, finishedWork, committedLanes) { + inProgressLanes = committedLanes; + inProgressRoot = root; + setCurrentFiber(finishedWork); + commitMutationEffectsOnFiber(finishedWork, root); + setCurrentFiber(finishedWork); + inProgressLanes = null; + inProgressRoot = null; +} - if (flags & Placement) { - try { - commitPlacement(finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } // Clear the "placement" from effect tag so that we know that this is - // inserted, before any life-cycles like componentDidMount gets called. - // TODO: findDOMNode doesn't rely on this any more but isMounted does - // and isMounted is deprecated anyway so we should be able to kill this. +function recursivelyTraverseMutationEffects(root, parentFiber, lanes) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects hae fired. + var deletions = parentFiber.deletions; - finishedWork.flags &= ~Placement; - } + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; - if (flags & Hydrating) { - finishedWork.flags &= ~Hydrating; + try { + commitDeletionEffects(root, parentFiber, childToDelete); + } catch (error) { + captureCommitPhaseError(childToDelete, parentFiber, error); } } + } + + var prevDebugFiber = getCurrentFiber(); - function commitLayoutEffects(finishedWork, root, committedLanes) { - inProgressLanes = committedLanes; - inProgressRoot = root; - var current = finishedWork.alternate; - commitLayoutEffectOnFiber(root, current, finishedWork); - inProgressLanes = null; - inProgressRoot = null; + if (parentFiber.subtreeFlags & MutationMask) { + var child = parentFiber.child; + + while (child !== null) { + setCurrentFiber(child); + commitMutationEffectsOnFiber(child, root); + child = child.sibling; } + } - function recursivelyTraverseLayoutEffects(root, parentFiber, lanes) { - var prevDebugFiber = getCurrentFiber(); + setCurrentFiber(prevDebugFiber); +} - if (parentFiber.subtreeFlags & LayoutMask) { - var child = parentFiber.child; +function commitMutationEffectsOnFiber(finishedWork, root, lanes) { + var current = finishedWork.alternate; + var flags = finishedWork.flags; // The effect flag should be checked *after* we refine the type of fiber, + // because the fiber tag is more specific. An exception is any flag related + // to reconciliation, because those can be set on all fiber types. - while (child !== null) { - setCurrentFiber(child); - var current = child.alternate; - commitLayoutEffectOnFiber(root, current, child); - child = child.sibling; - } - } + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + + if (flags & Update) { + try { + commitHookEffectListUnmount(Insertion | HasEffect, finishedWork, finishedWork.return); + commitHookEffectListMount(Insertion | HasEffect, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } // Layout effects are destroyed during the mutation phase so that all + // destroy functions for all fibers are called before any create functions. + // This prevents sibling component effects from interfering with each other, + // e.g. a destroy function in one component should never override a ref set + // by a create function in another component during the same commit. - setCurrentFiber(prevDebugFiber); - } - function disappearLayoutEffects(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - // TODO (Offscreen) Check: flags & LayoutStatic if (shouldProfile(finishedWork)) { try { startLayoutEffectTimer(); - commitHookEffectListUnmount( - Layout, - finishedWork, - finishedWork.return - ); - } finally { - recordLayoutEffectDuration(finishedWork); + commitHookEffectListUnmount(Layout | HasEffect, finishedWork, finishedWork.return); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } + + recordLayoutEffectDuration(finishedWork); } else { - commitHookEffectListUnmount( - Layout, - finishedWork, - finishedWork.return - ); + try { + commitHookEffectListUnmount(Layout | HasEffect, finishedWork, finishedWork.return); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } } - - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; } - case ClassComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - var instance = finishedWork.stateNode; + return; + } - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount( - finishedWork, - finishedWork.return, - instance - ); - } + case ClassComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); + } } - case HostHoistable: - case HostSingleton: - case HostComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; + if (flags & Callback && offscreenSubtreeIsHidden) { + var updateQueue = finishedWork.updateQueue; + + if (updateQueue !== null) { + deferHiddenCallbacks(updateQueue); + } } - case OffscreenComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - var isHidden = finishedWork.memoizedState !== null; + return; + } - if (isHidden); - else { - recursivelyTraverseDisappearLayoutEffects(finishedWork); - } + case HostHoistable: - break; - } + case HostSingleton: - default: { - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; + case HostComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); + } } + + return; } - } - function recursivelyTraverseDisappearLayoutEffects(parentFiber) { - // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - var child = parentFiber.child; + case HostText: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - while (child !== null) { - disappearLayoutEffects(child); - child = child.sibling; + return; } - } - function reappearLayoutEffects( - finishedRoot, - current, - finishedWork, // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - includeWorkInProgressEffects - ) { - // Turn on layout effects in a tree that previously disappeared. - var flags = finishedWork.flags; + case HostRoot: + { + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + } - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Check flags & LayoutStatic - - commitHookLayoutEffects(finishedWork, Layout); - break; + if (flags & Update) { + + { + var containerInfo = root.containerInfo; + var pendingChildren = root.pendingChildren; + + try { + replaceContainerChildren(containerInfo, pendingChildren); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } } - case ClassComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Check for LayoutStatic flag + return; + } + + case HostPortal: + { + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + } - var instance = finishedWork.stateNode; + if (flags & Update) { + { + var portal = finishedWork.stateNode; + var _containerInfo = portal.containerInfo; + var _pendingChildren = portal.pendingChildren; - if (typeof instance.componentDidMount === "function") { try { - instance.componentDidMount(); + replaceContainerChildren(_containerInfo, _pendingChildren); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } - } // Commit any callbacks that would have fired while the component - // was hidden. + } + } + + return; + } + + case SuspenseComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); // TODO: We should mark a flag on the Suspense fiber itself, rather than + // relying on the Offscreen fiber having a flag also being marked. The + // reason is that this offscreen fiber might not be part of the work-in- + // progress tree! It could have been reused from a previous render. This + // doesn't lead to incorrect behavior because we don't rely on the flag + // check alone; we also compare the states explicitly below. But for + // modeling purposes, we _should_ be able to rely on the flag check alone. + // So this is a bit fragile. + // + // Also, all this logic could/should move to the passive phase so it + // doesn't block paint. + + var offscreenFiber = finishedWork.child; + + if (offscreenFiber.flags & Visibility) { + // Throttle the appearance and disappearance of Suspense fallbacks. + var isShowingFallback = finishedWork.memoizedState !== null; + var wasShowingFallback = current !== null && current.memoizedState !== null; + + if (alwaysThrottleRetries) { + if (isShowingFallback !== wasShowingFallback) { + // A fallback is either appearing or disappearing. + markCommitTimeOfFallback(); + } + } else { + if (isShowingFallback && !wasShowingFallback) { + // Old behavior. Only mark when a fallback appears, not when + // it disappears. + markCommitTimeOfFallback(); + } + } + } + + if (flags & Update) { + try { + commitSuspenseCallback(finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - var updateQueue = finishedWork.updateQueue; + var retryQueue = finishedWork.updateQueue; - if (updateQueue !== null) { - commitHiddenCallbacks(updateQueue, instance); - } // If this is newly finished work, check for setState callbacks + if (retryQueue !== null) { + finishedWork.updateQueue = null; + attachSuspenseRetryListeners(finishedWork, retryQueue); + } + } - if (includeWorkInProgressEffects && flags & Callback) { - commitClassCallbacks(finishedWork); - } // TODO: Check flags & RefStatic + return; + } - safelyAttachRef(finishedWork, finishedWork.return); - break; + case OffscreenComponent: + { + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); + } } - // Unlike commitLayoutEffectsOnFiber, we don't need to handle HostRoot - // because this function only visits nodes that are inside an - // Offscreen fiber. - // case HostRoot: { - // ... - // } - case HostHoistable: - case HostSingleton: - case HostComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // Renderers may schedule work to be done after host components are mounted - // (eg DOM renderer may schedule auto-focus for inputs and form controls). - // These effects should only be committed when components are first mounted, - // aka when there is no current/alternate. - - if ( - includeWorkInProgressEffects && - current === null && - flags & Update - ) { - commitHostComponentMount(finishedWork); - } // TODO: Check flags & Ref + var newState = finishedWork.memoizedState; + var isHidden = newState !== null; + var wasHidden = current !== null && current.memoizedState !== null; - safelyAttachRef(finishedWork, finishedWork.return); - break; + if (finishedWork.mode & ConcurrentMode) { + // Before committing the children, track on the stack whether this + // offscreen subtree was already hidden, so that we don't unmount the + // effects again. + var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden || isHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden || wasHidden; + recursivelyTraverseMutationEffects(root, finishedWork); + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; + } else { + recursivelyTraverseMutationEffects(root, finishedWork); } - case Profiler: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Figure out how Profiler updates should work with Offscreen + commitReconciliationEffects(finishedWork); + var offscreenInstance = finishedWork.stateNode; // TODO: Add explicit effect flag to set _current. + + offscreenInstance._current = finishedWork; // Offscreen stores pending changes to visibility in `_pendingVisibility`. This is + // to support batching of `attach` and `detach` calls. - if (includeWorkInProgressEffects && flags & Update) { - commitProfilerUpdate(finishedWork, current); + offscreenInstance._visibility &= ~OffscreenDetached; + offscreenInstance._visibility |= offscreenInstance._pendingVisibility & OffscreenDetached; + + if (flags & Visibility) { + // Track the current state on the Offscreen instance so we can + // read it during an event + if (isHidden) { + offscreenInstance._visibility &= ~OffscreenVisible; + } else { + offscreenInstance._visibility |= OffscreenVisible; } - break; - } + if (isHidden) { + var isUpdate = current !== null; + var wasHiddenByAncestorOffscreen = offscreenSubtreeIsHidden || offscreenSubtreeWasHidden; // Only trigger disapper layout effects if: + // - This is an update, not first mount. + // - This Offscreen was not hidden before. + // - Ancestor Offscreen was not hidden in previous commit. + + if (isUpdate && !wasHidden && !wasHiddenByAncestorOffscreen) { + if ((finishedWork.mode & ConcurrentMode) !== NoMode) { + // Disappear the layout effects of all the children + recursivelyTraverseDisappearLayoutEffects(finishedWork); + } + } + } // Offscreen with manual mode manages visibility manually. + } // TODO: Move to passive phase - case SuspenseComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Figure out how Suspense hydration callbacks should work - break; + if (flags & Update) { + var offscreenQueue = finishedWork.updateQueue; + + if (offscreenQueue !== null) { + var _retryQueue = offscreenQueue.retryQueue; + + if (_retryQueue !== null) { + offscreenQueue.retryQueue = null; + attachSuspenseRetryListeners(finishedWork, _retryQueue); + } + } } - case OffscreenComponent: { - var offscreenState = finishedWork.memoizedState; - var isHidden = offscreenState !== null; + return; + } - if (isHidden); - else { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - } // TODO: Check flags & Ref + case SuspenseListComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - safelyAttachRef(finishedWork, finishedWork.return); - break; - } + if (flags & Update) { + var _retryQueue2 = finishedWork.updateQueue; - default: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - break; + if (_retryQueue2 !== null) { + finishedWork.updateQueue = null; + attachSuspenseRetryListeners(finishedWork, _retryQueue2); + } } + + return; } - } - function recursivelyTraverseReappearLayoutEffects( - finishedRoot, - parentFiber, - includeWorkInProgressEffects - ) { - // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - var childShouldIncludeWorkInProgressEffects = - includeWorkInProgressEffects && - (parentFiber.subtreeFlags & LayoutMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) + case ScopeComponent: + { - var prevDebugFiber = getCurrentFiber(); - var child = parentFiber.child; + return; + } - while (child !== null) { - var current = child.alternate; - reappearLayoutEffects( - finishedRoot, - current, - child, - childShouldIncludeWorkInProgressEffects - ); - child = child.sibling; + default: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + return; } + } +} - setCurrentFiber(prevDebugFiber); - } +function commitReconciliationEffects(finishedWork) { + // Placement effects (insertions, reorders) can be scheduled on any fiber + // type. They needs to happen after the children effects have fired, but + // before the effects on this fiber have fired. + var flags = finishedWork.flags; + + if (flags & Placement) { + try { + commitPlacement(finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } // Clear the "placement" from effect tag so that we know that this is + // inserted, before any life-cycles like componentDidMount gets called. + // TODO: findDOMNode doesn't rely on this any more but isMounted does + // and isMounted is deprecated anyway so we should be able to kill this. + + + finishedWork.flags &= ~Placement; + } + + if (flags & Hydrating) { + finishedWork.flags &= ~Hydrating; + } +} - function commitHookPassiveMountEffects(finishedWork, hookFlags) { - if (shouldProfile(finishedWork)) { - startPassiveEffectTimer(); +function commitLayoutEffects(finishedWork, root, committedLanes) { + inProgressLanes = committedLanes; + inProgressRoot = root; + var current = finishedWork.alternate; + commitLayoutEffectOnFiber(root, current, finishedWork); + inProgressLanes = null; + inProgressRoot = null; +} - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } +function recursivelyTraverseLayoutEffects(root, parentFiber, lanes) { + var prevDebugFiber = getCurrentFiber(); - recordPassiveEffectDuration(finishedWork); - } else { - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } + if (parentFiber.subtreeFlags & LayoutMask) { + var child = parentFiber.child; + + while (child !== null) { + setCurrentFiber(child); + var current = child.alternate; + commitLayoutEffectOnFiber(root, current, child); + child = child.sibling; } + } - function commitOffscreenPassiveMountEffects( - current, - finishedWork, - instance - ) { - { - var previousCache = null; - - if ( - current !== null && - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - previousCache = current.memoizedState.cachePool.pool; - } - - var nextCache = null; - - if ( - finishedWork.memoizedState !== null && - finishedWork.memoizedState.cachePool !== null - ) { - nextCache = finishedWork.memoizedState.cachePool.pool; - } // Retain/release the cache used for pending (suspended) nodes. - // Note that this is only reached in the non-suspended/visible case: - // when the content is suspended/hidden, the retain/release occurs - // via the parent Suspense component (see case above). - - if (nextCache !== previousCache) { - if (nextCache != null) { - retainCache(nextCache); - } + setCurrentFiber(prevDebugFiber); +} - if (previousCache != null) { - releaseCache(previousCache); +function disappearLayoutEffects(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + // TODO (Offscreen) Check: flags & LayoutStatic + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + commitHookEffectListUnmount(Layout, finishedWork, finishedWork.return); + } finally { + recordLayoutEffectDuration(finishedWork); } + } else { + commitHookEffectListUnmount(Layout, finishedWork, finishedWork.return); } + + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } - } - function commitCachePassiveMountEffect(current, finishedWork) { + case ClassComponent: { - var previousCache = null; + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + var instance = finishedWork.stateNode; - if (finishedWork.alternate !== null) { - previousCache = finishedWork.alternate.memoizedState.cache; + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(finishedWork, finishedWork.return, instance); } - var nextCache = finishedWork.memoizedState.cache; // Retain/release the cache. In theory the cache component - // could be "borrowing" a cache instance owned by some parent, - // in which case we could avoid retaining/releasing. But it - // is non-trivial to determine when that is the case, so we - // always retain/release. - - if (nextCache !== previousCache) { - retainCache(nextCache); + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; + } - if (previousCache != null) { - releaseCache(previousCache); - } - } + case HostHoistable: + case HostSingleton: + case HostComponent: + { + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } - } - function commitPassiveMountEffects( - root, - finishedWork, - committedLanes, - committedTransitions - ) { - setCurrentFiber(finishedWork); - commitPassiveMountOnFiber( - root, - finishedWork, - committedLanes, - committedTransitions - ); - resetCurrentFiber(); - } + case OffscreenComponent: + { + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + var isHidden = finishedWork.memoizedState !== null; - function recursivelyTraversePassiveMountEffects( - root, - parentFiber, - committedLanes, - committedTransitions - ) { - var prevDebugFiber = getCurrentFiber(); + if (isHidden) ; else { + recursivelyTraverseDisappearLayoutEffects(finishedWork); + } - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; + break; + } - while (child !== null) { - setCurrentFiber(child); - commitPassiveMountOnFiber( - root, - child, - committedLanes, - committedTransitions - ); - child = child.sibling; - } + default: + { + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } + } +} - setCurrentFiber(prevDebugFiber); - } +function recursivelyTraverseDisappearLayoutEffects(parentFiber) { + // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) + var child = parentFiber.child; - function commitPassiveMountOnFiber( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ) { - // When updating this function, also update reconnectPassiveEffects, which does - // most of the same things when an offscreen tree goes from hidden -> visible, - // or when toggling effects inside a hidden tree. - var flags = finishedWork.flags; + while (child !== null) { + disappearLayoutEffects(child); + child = child.sibling; + } +} - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - - if (flags & Passive$1) { - commitHookPassiveMountEffects(finishedWork, Passive | HasEffect); - } +function reappearLayoutEffects(finishedRoot, current, finishedWork, // This function visits both newly finished work and nodes that were re-used +// from a previously committed tree. We cannot check non-static flags if the +// node was reused. +includeWorkInProgressEffects) { + // Turn on layout effects in a tree that previously disappeared. + var flags = finishedWork.flags; - break; - } + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Check flags & LayoutStatic - case HostRoot: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); + commitHookLayoutEffects(finishedWork, Layout); + break; + } - if (flags & Passive$1) { - { - var previousCache = null; + case ClassComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Check for LayoutStatic flag - if (finishedWork.alternate !== null) { - previousCache = finishedWork.alternate.memoizedState.cache; - } + var instance = finishedWork.stateNode; - var nextCache = finishedWork.memoizedState.cache; // Retain/release the root cache. - // Note that on initial mount, previousCache and nextCache will be the same - // and this retain won't occur. To counter this, we instead retain the HostRoot's - // initial cache when creating the root itself (see createFiberRoot() in - // ReactFiberRoot.js). Subsequent updates that change the cache are reflected - // here, such that previous/next caches are retained correctly. + if (typeof instance.componentDidMount === 'function') { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } // Commit any callbacks that would have fired while the component + // was hidden. - if (nextCache !== previousCache) { - retainCache(nextCache); - if (previousCache != null) { - releaseCache(previousCache); - } - } - } - } + var updateQueue = finishedWork.updateQueue; - break; - } + if (updateQueue !== null) { + commitHiddenCallbacks(updateQueue, instance); + } // If this is newly finished work, check for setState callbacks - case LegacyHiddenComponent: { - break; - } - case OffscreenComponent: { - // TODO: Pass `current` as argument to this function - var _instance3 = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; + if (includeWorkInProgressEffects && flags & Callback) { + commitClassCallbacks(finishedWork); + } // TODO: Check flags & RefStatic - if (isHidden) { - if (_instance3._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } else { - if (finishedWork.mode & ConcurrentMode) { - // The effects are currently disconnected. Since the tree is hidden, - // don't connect them. This also applies to the initial render. - { - // "Atomic" effects are ones that need to fire on every commit, - // even during pre-rendering. An example is updating the reference - // count on cache instances. - recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - finishedWork - ); - } - } else { - // Legacy Mode: Fire the effects even if the tree is hidden. - _instance3._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } - } - } else { - // Tree is visible - if (_instance3._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } else { - // The effects are currently disconnected. Reconnect them, while also - // firing effects inside newly mounted trees. This also applies to - // the initial render. - _instance3._visibility |= OffscreenPassiveEffectsConnected; - var includeWorkInProgressEffects = - (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } - } - if (flags & Passive$1) { - var _current = finishedWork.alternate; - commitOffscreenPassiveMountEffects(_current, finishedWork); - } + safelyAttachRef(finishedWork, finishedWork.return); + break; + } + // Unlike commitLayoutEffectsOnFiber, we don't need to handle HostRoot + // because this function only visits nodes that are inside an + // Offscreen fiber. + // case HostRoot: { + // ... + // } - break; - } + case HostHoistable: + case HostSingleton: + case HostComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // Renderers may schedule work to be done after host components are mounted + // (eg DOM renderer may schedule auto-focus for inputs and form controls). + // These effects should only be committed when components are first mounted, + // aka when there is no current/alternate. - case CacheComponent: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); + if (includeWorkInProgressEffects && current === null && flags & Update) { + commitHostComponentMount(finishedWork); + } // TODO: Check flags & Ref - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current2 = finishedWork.alternate; - commitCachePassiveMountEffect(_current2, finishedWork); - } - break; - } + safelyAttachRef(finishedWork, finishedWork.return); + break; + } - case TracingMarkerComponent: + case Profiler: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Figure out how Profiler updates should work with Offscreen - default: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - break; + if (includeWorkInProgressEffects && flags & Update) { + commitProfilerUpdate(finishedWork, current); } - } - } - function recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - parentFiber, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ) { - // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - var childShouldIncludeWorkInProgressEffects = - includeWorkInProgressEffects && - (parentFiber.subtreeFlags & PassiveMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) + break; + } - var prevDebugFiber = getCurrentFiber(); - var child = parentFiber.child; + case SuspenseComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Figure out how Suspense hydration callbacks should work - while (child !== null) { - reconnectPassiveEffects( - finishedRoot, - child, - committedLanes, - committedTransitions, - childShouldIncludeWorkInProgressEffects - ); - child = child.sibling; + break; } - setCurrentFiber(prevDebugFiber); - } + case OffscreenComponent: + { + var offscreenState = finishedWork.memoizedState; + var isHidden = offscreenState !== null; - function reconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - includeWorkInProgressEffects - ) { - var flags = finishedWork.flags; + if (isHidden) ; else { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + } // TODO: Check flags & Ref - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); // TODO: Check for PassiveStatic flag - - commitHookPassiveMountEffects(finishedWork, Passive); - break; - } - // Unlike commitPassiveMountOnFiber, we don't need to handle HostRoot - // because this function only visits nodes that are inside an - // Offscreen fiber. - // case HostRoot: { - // ... - // } - case LegacyHiddenComponent: { - break; - } + safelyAttachRef(finishedWork, finishedWork.return); + break; + } + + default: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + break; + } + } +} - case OffscreenComponent: { - var _instance4 = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; +function recursivelyTraverseReappearLayoutEffects(finishedRoot, parentFiber, includeWorkInProgressEffects) { + // This function visits both newly finished work and nodes that were re-used + // from a previously committed tree. We cannot check non-static flags if the + // node was reused. + var childShouldIncludeWorkInProgressEffects = includeWorkInProgressEffects && (parentFiber.subtreeFlags & LayoutMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - if (isHidden) { - if (_instance4._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } else { - if (finishedWork.mode & ConcurrentMode) { - // The effects are currently disconnected. Since the tree is hidden, - // don't connect them. This also applies to the initial render. - { - // "Atomic" effects are ones that need to fire on every commit, - // even during pre-rendering. An example is updating the reference - // count on cache instances. - recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - finishedWork - ); - } - } else { - // Legacy Mode: Fire the effects even if the tree is hidden. - _instance4._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } - } - } else { - // Tree is visible - // Since we're already inside a reconnecting tree, it doesn't matter - // whether the effects are currently connected. In either case, we'll - // continue traversing the tree and firing all the effects. - // - // We do need to set the "connected" flag on the instance, though. - _instance4._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } + var prevDebugFiber = getCurrentFiber(); + var child = parentFiber.child; - if (includeWorkInProgressEffects && flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current3 = finishedWork.alternate; - commitOffscreenPassiveMountEffects(_current3, finishedWork); - } + while (child !== null) { + var current = child.alternate; + reappearLayoutEffects(finishedRoot, current, child, childShouldIncludeWorkInProgressEffects); + child = child.sibling; + } - break; - } + setCurrentFiber(prevDebugFiber); +} - case CacheComponent: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); +function commitHookPassiveMountEffects(finishedWork, hookFlags) { + if (shouldProfile(finishedWork)) { + startPassiveEffectTimer(); - if (includeWorkInProgressEffects && flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current4 = finishedWork.alternate; - commitCachePassiveMountEffect(_current4, finishedWork); - } + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - break; - } + recordPassiveEffectDuration(finishedWork); + } else { + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - case TracingMarkerComponent: +function commitOffscreenPassiveMountEffects(current, finishedWork, instance) { + { + var previousCache = null; - default: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - break; - } - } + if (current !== null && current.memoizedState !== null && current.memoizedState.cachePool !== null) { + previousCache = current.memoizedState.cachePool.pool; } - function recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - parentFiber, - committedLanes, - committedTransitions - ) { - // "Atomic" effects are ones that need to fire on every commit, even during - // pre-rendering. We call this function when traversing a hidden tree whose - // regular effects are currently disconnected. - var prevDebugFiber = getCurrentFiber(); // TODO: Add special flag for atomic effects + var nextCache = null; - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; + if (finishedWork.memoizedState !== null && finishedWork.memoizedState.cachePool !== null) { + nextCache = finishedWork.memoizedState.cachePool.pool; + } // Retain/release the cache used for pending (suspended) nodes. + // Note that this is only reached in the non-suspended/visible case: + // when the content is suspended/hidden, the retain/release occurs + // via the parent Suspense component (see case above). - while (child !== null) { - setCurrentFiber(child); - commitAtomicPassiveEffects(finishedRoot, child); - child = child.sibling; - } + + if (nextCache !== previousCache) { + if (nextCache != null) { + retainCache(nextCache); } - setCurrentFiber(prevDebugFiber); + if (previousCache != null) { + releaseCache(previousCache); + } } + } +} - function commitAtomicPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ) { - // "Atomic" effects are ones that need to fire on every commit, even during - // pre-rendering. We call this function when traversing a hidden tree whose - // regular effects are currently disconnected. - var flags = finishedWork.flags; +function commitCachePassiveMountEffect(current, finishedWork) { + { + var previousCache = null; - switch (finishedWork.tag) { - case OffscreenComponent: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + if (finishedWork.alternate !== null) { + previousCache = finishedWork.alternate.memoizedState.cache; + } - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var current = finishedWork.alternate; - commitOffscreenPassiveMountEffects(current, finishedWork); - } + var nextCache = finishedWork.memoizedState.cache; // Retain/release the cache. In theory the cache component + // could be "borrowing" a cache instance owned by some parent, + // in which case we could avoid retaining/releasing. But it + // is non-trivial to determine when that is the case, so we + // always retain/release. - break; - } + if (nextCache !== previousCache) { + retainCache(nextCache); - case CacheComponent: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + if (previousCache != null) { + releaseCache(previousCache); + } + } + } +} - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current5 = finishedWork.alternate; - commitCachePassiveMountEffect(_current5, finishedWork); - } +function commitPassiveMountEffects(root, finishedWork, committedLanes, committedTransitions) { + setCurrentFiber(finishedWork); + commitPassiveMountOnFiber(root, finishedWork, committedLanes, committedTransitions); + resetCurrentFiber(); +} - break; - } +function recursivelyTraversePassiveMountEffects(root, parentFiber, committedLanes, committedTransitions) { + var prevDebugFiber = getCurrentFiber(); - default: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - break; - } - } + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; + + while (child !== null) { + setCurrentFiber(child); + commitPassiveMountOnFiber(root, child, committedLanes, committedTransitions); + child = child.sibling; } + } - function commitPassiveUnmountEffects(finishedWork) { - setCurrentFiber(finishedWork); - commitPassiveUnmountOnFiber(finishedWork); - resetCurrentFiber(); - } // If we're inside a brand new tree, or a tree that was already visible, then we - // should only suspend host components that have a ShouldSuspendCommit flag. - // Components without it haven't changed since the last commit, so we can skip - // over those. - // - // When we enter a tree that is being revealed (going from hidden -> visible), - // we need to suspend _any_ component that _may_ suspend. Even if they're - // already in the "current" tree. Because their visibility has changed, the - // browser may not have prerendered them yet. So we check the MaySuspendCommit - // flag instead. + setCurrentFiber(prevDebugFiber); +} - var suspenseyCommitFlag = ShouldSuspendCommit; - function accumulateSuspenseyCommit(finishedWork) { - accumulateSuspenseyCommitOnFiber(finishedWork); - } +function commitPassiveMountOnFiber(finishedRoot, finishedWork, committedLanes, committedTransitions) { + // When updating this function, also update reconnectPassiveEffects, which does + // most of the same things when an offscreen tree goes from hidden -> visible, + // or when toggling effects inside a hidden tree. + var flags = finishedWork.flags; - function recursivelyAccumulateSuspenseyCommit(parentFiber) { - if (parentFiber.subtreeFlags & suspenseyCommitFlag) { - var child = parentFiber.child; + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); - while (child !== null) { - accumulateSuspenseyCommitOnFiber(child); - child = child.sibling; + if (flags & Passive$1) { + commitHookPassiveMountEffects(finishedWork, Passive | HasEffect); } + + break; } - } - function accumulateSuspenseyCommitOnFiber(fiber) { - switch (fiber.tag) { - case HostHoistable: { - recursivelyAccumulateSuspenseyCommit(fiber); + case HostRoot: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + + if (flags & Passive$1) { + { + var previousCache = null; - if (fiber.flags & suspenseyCommitFlag) { - if (fiber.memoizedState !== null) { - suspendResource(); + if (finishedWork.alternate !== null) { + previousCache = finishedWork.alternate.memoizedState.cache; } - } - break; - } + var nextCache = finishedWork.memoizedState.cache; // Retain/release the root cache. + // Note that on initial mount, previousCache and nextCache will be the same + // and this retain won't occur. To counter this, we instead retain the HostRoot's + // initial cache when creating the root itself (see createFiberRoot() in + // ReactFiberRoot.js). Subsequent updates that change the cache are reflected + // here, such that previous/next caches are retained correctly. - case HostComponent: { - recursivelyAccumulateSuspenseyCommit(fiber); + if (nextCache !== previousCache) { + retainCache(nextCache); - break; + if (previousCache != null) { + releaseCache(previousCache); + } + } + } } - case HostRoot: - case HostPortal: { - { - recursivelyAccumulateSuspenseyCommit(fiber); - } + break; + } - break; - } + case LegacyHiddenComponent: + { - case OffscreenComponent: { - var isHidden = fiber.memoizedState !== null; + break; + } - if (isHidden); - else { - var current = fiber.alternate; - var wasHidden = current !== null && current.memoizedState !== null; + case OffscreenComponent: + { + // TODO: Pass `current` as argument to this function + var _instance3 = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; - if (wasHidden) { - // This tree is being revealed. Visit all newly visible suspensey - // instances, even if they're in the current tree. - var prevFlags = suspenseyCommitFlag; - suspenseyCommitFlag = MaySuspendCommit; - recursivelyAccumulateSuspenseyCommit(fiber); - suspenseyCommitFlag = prevFlags; + if (isHidden) { + if (_instance3._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + } else { + if (finishedWork.mode & ConcurrentMode) { + // The effects are currently disconnected. Since the tree is hidden, + // don't connect them. This also applies to the initial render. + { + // "Atomic" effects are ones that need to fire on every commit, + // even during pre-rendering. An example is updating the reference + // count on cache instances. + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + } } else { - recursivelyAccumulateSuspenseyCommit(fiber); + // Legacy Mode: Fire the effects even if the tree is hidden. + _instance3._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); } } - - break; + } else { + // Tree is visible + if (_instance3._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + } else { + // The effects are currently disconnected. Reconnect them, while also + // firing effects inside newly mounted trees. This also applies to + // the initial render. + _instance3._visibility |= OffscreenPassiveEffectsConnected; + var includeWorkInProgressEffects = (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + } } - default: { - recursivelyAccumulateSuspenseyCommit(fiber); + if (flags & Passive$1) { + var _current = finishedWork.alternate; + commitOffscreenPassiveMountEffects(_current, finishedWork); } - } - } - - function detachAlternateSiblings(parentFiber) { - // A fiber was deleted from this parent fiber, but it's still part of the - // previous (alternate) parent fiber's list of children. Because children - // are a linked list, an earlier sibling that's still alive will be - // connected to the deleted fiber via its `alternate`: - // - // live fiber --alternate--> previous live fiber --sibling--> deleted - // fiber - // - // We can't disconnect `alternate` on nodes that haven't been deleted yet, - // but we can disconnect the `sibling` and `child` pointers. - var previousFiber = parentFiber.alternate; - if (previousFiber !== null) { - var detachedChild = previousFiber.child; - - if (detachedChild !== null) { - previousFiber.child = null; + break; + } - do { - // $FlowFixMe[incompatible-use] found when upgrading Flow - var detachedSibling = detachedChild.sibling; // $FlowFixMe[incompatible-use] found when upgrading Flow + case CacheComponent: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); - detachedChild.sibling = null; - detachedChild = detachedSibling; - } while (detachedChild !== null); + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current2 = finishedWork.alternate; + commitCachePassiveMountEffect(_current2, finishedWork); } + + break; } - } - function commitHookPassiveUnmountEffects( - finishedWork, - nearestMountedAncestor, - hookFlags - ) { - if (shouldProfile(finishedWork)) { - startPassiveEffectTimer(); - commitHookEffectListUnmount( - hookFlags, - finishedWork, - nearestMountedAncestor - ); - recordPassiveEffectDuration(finishedWork); - } else { - commitHookEffectListUnmount( - hookFlags, - finishedWork, - nearestMountedAncestor - ); + case TracingMarkerComponent: + + default: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + break; } - } + } +} - function recursivelyTraversePassiveUnmountEffects(parentFiber) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects have fired. - var deletions = parentFiber.deletions; +function recursivelyTraverseReconnectPassiveEffects(finishedRoot, parentFiber, committedLanes, committedTransitions, includeWorkInProgressEffects) { + // This function visits both newly finished work and nodes that were re-used + // from a previously committed tree. We cannot check non-static flags if the + // node was reused. + var childShouldIncludeWorkInProgressEffects = includeWorkInProgressEffects && (parentFiber.subtreeFlags & PassiveMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; // TODO: Convert this to use recursion + var prevDebugFiber = getCurrentFiber(); + var child = parentFiber.child; - nextEffect = childToDelete; - commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - childToDelete, - parentFiber - ); - } - } + while (child !== null) { + reconnectPassiveEffects(finishedRoot, child, committedLanes, committedTransitions, childShouldIncludeWorkInProgressEffects); + child = child.sibling; + } - detachAlternateSiblings(parentFiber); - } + setCurrentFiber(prevDebugFiber); +} - var prevDebugFiber = getCurrentFiber(); // TODO: Split PassiveMask into separate masks for mount and unmount? +function reconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, // This function visits both newly finished work and nodes that were re-used +// from a previously committed tree. We cannot check non-static flags if the +// node was reused. +includeWorkInProgressEffects) { + var flags = finishedWork.flags; - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); // TODO: Check for PassiveStatic flag - while (child !== null) { - setCurrentFiber(child); - commitPassiveUnmountOnFiber(child); - child = child.sibling; - } + commitHookPassiveMountEffects(finishedWork, Passive); + break; } + // Unlike commitPassiveMountOnFiber, we don't need to handle HostRoot + // because this function only visits nodes that are inside an + // Offscreen fiber. + // case HostRoot: { + // ... + // } - setCurrentFiber(prevDebugFiber); - } - - function commitPassiveUnmountOnFiber(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraversePassiveUnmountEffects(finishedWork); + case LegacyHiddenComponent: + { - if (finishedWork.flags & Passive$1) { - commitHookPassiveUnmountEffects( - finishedWork, - finishedWork.return, - Passive | HasEffect - ); - } + break; + } - break; - } + case OffscreenComponent: + { + var _instance4 = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; - case OffscreenComponent: { - var instance = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; - - if ( - isHidden && - instance._visibility & OffscreenPassiveEffectsConnected && // For backwards compatibility, don't unmount when a tree suspends. In - // the future we may change this to unmount after a delay. - (finishedWork.return === null || - finishedWork.return.tag !== SuspenseComponent) - ) { - // The effects are currently connected. Disconnect them. - // TODO: Add option or heuristic to delay before disconnecting the - // effects. Then if the tree reappears before the delay has elapsed, we - // can skip toggling the effects entirely. - instance._visibility &= ~OffscreenPassiveEffectsConnected; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); + if (isHidden) { + if (_instance4._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); } else { - recursivelyTraversePassiveUnmountEffects(finishedWork); + if (finishedWork.mode & ConcurrentMode) { + // The effects are currently disconnected. Since the tree is hidden, + // don't connect them. This also applies to the initial render. + { + // "Atomic" effects are ones that need to fire on every commit, + // even during pre-rendering. An example is updating the reference + // count on cache instances. + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + } + } else { + // Legacy Mode: Fire the effects even if the tree is hidden. + _instance4._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + } } - - break; + } else { + // Tree is visible + // Since we're already inside a reconnecting tree, it doesn't matter + // whether the effects are currently connected. In either case, we'll + // continue traversing the tree and firing all the effects. + // + // We do need to set the "connected" flag on the instance, though. + _instance4._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); } - default: { - recursivelyTraversePassiveUnmountEffects(finishedWork); - break; + if (includeWorkInProgressEffects && flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current3 = finishedWork.alternate; + commitOffscreenPassiveMountEffects(_current3, finishedWork); } - } - } - function recursivelyTraverseDisconnectPassiveEffects(parentFiber) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects have fired. - var deletions = parentFiber.deletions; + break; + } - if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; // TODO: Convert this to use recursion + case CacheComponent: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); - nextEffect = childToDelete; - commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - childToDelete, - parentFiber - ); - } + if (includeWorkInProgressEffects && flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current4 = finishedWork.alternate; + commitCachePassiveMountEffect(_current4, finishedWork); } - detachAlternateSiblings(parentFiber); + break; } - var prevDebugFiber = getCurrentFiber(); // TODO: Check PassiveStatic flag + case TracingMarkerComponent: - var child = parentFiber.child; - - while (child !== null) { - setCurrentFiber(child); - disconnectPassiveEffect(child); - child = child.sibling; + default: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + break; } + } +} - setCurrentFiber(prevDebugFiber); - } +function recursivelyTraverseAtomicPassiveEffects(finishedRoot, parentFiber, committedLanes, committedTransitions) { + // "Atomic" effects are ones that need to fire on every commit, even during + // pre-rendering. We call this function when traversing a hidden tree whose + // regular effects are currently disconnected. + var prevDebugFiber = getCurrentFiber(); // TODO: Add special flag for atomic effects - function disconnectPassiveEffect(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - // TODO: Check PassiveStatic flag - commitHookPassiveUnmountEffects( - finishedWork, - finishedWork.return, - Passive - ); // When disconnecting passive effects, we fire the effects in the same - // order as during a deletiong: parent before child + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - break; - } + while (child !== null) { + setCurrentFiber(child); + commitAtomicPassiveEffects(finishedRoot, child); + child = child.sibling; + } + } - case OffscreenComponent: { - var instance = finishedWork.stateNode; + setCurrentFiber(prevDebugFiber); +} - if (instance._visibility & OffscreenPassiveEffectsConnected) { - instance._visibility &= ~OffscreenPassiveEffectsConnected; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - } +function commitAtomicPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions) { + // "Atomic" effects are ones that need to fire on every commit, even during + // pre-rendering. We call this function when traversing a hidden tree whose + // regular effects are currently disconnected. + var flags = finishedWork.flags; - break; - } + switch (finishedWork.tag) { + case OffscreenComponent: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - default: { - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - break; + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var current = finishedWork.alternate; + commitOffscreenPassiveMountEffects(current, finishedWork); } - } - } - function commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - deletedSubtreeRoot, - nearestMountedAncestor - ) { - while (nextEffect !== null) { - var fiber = nextEffect; // Deletion effects fire in parent -> child order - // TODO: Check if fiber has a PassiveStatic flag + break; + } - setCurrentFiber(fiber); - commitPassiveUnmountInsideDeletedTreeOnFiber( - fiber, - nearestMountedAncestor - ); - resetCurrentFiber(); - var child = fiber.child; // TODO: Only traverse subtree if it has a PassiveStatic flag. + case CacheComponent: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - if (child !== null) { - child.return = fiber; - nextEffect = child; - } else { - commitPassiveUnmountEffectsInsideOfDeletedTree_complete( - deletedSubtreeRoot - ); + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current5 = finishedWork.alternate; + commitCachePassiveMountEffect(_current5, finishedWork); } - } - } - function commitPassiveUnmountEffectsInsideOfDeletedTree_complete( - deletedSubtreeRoot - ) { - while (nextEffect !== null) { - var fiber = nextEffect; - var sibling = fiber.sibling; - var returnFiber = fiber.return; // Recursively traverse the entire deleted tree and clean up fiber fields. - // This is more aggressive than ideal, and the long term goal is to only - // have to detach the deleted tree at the root. + break; + } - detachFiberAfterEffects(fiber); + default: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + break; + } + } +} - if (fiber === deletedSubtreeRoot) { - nextEffect = null; - return; - } +function commitPassiveUnmountEffects(finishedWork) { + setCurrentFiber(finishedWork); + commitPassiveUnmountOnFiber(finishedWork); + resetCurrentFiber(); +} // If we're inside a brand new tree, or a tree that was already visible, then we +// should only suspend host components that have a ShouldSuspendCommit flag. +// Components without it haven't changed since the last commit, so we can skip +// over those. +// +// When we enter a tree that is being revealed (going from hidden -> visible), +// we need to suspend _any_ component that _may_ suspend. Even if they're +// already in the "current" tree. Because their visibility has changed, the +// browser may not have prerendered them yet. So we check the MaySuspendCommit +// flag instead. + +var suspenseyCommitFlag = ShouldSuspendCommit; +function accumulateSuspenseyCommit(finishedWork) { + accumulateSuspenseyCommitOnFiber(finishedWork); +} - if (sibling !== null) { - sibling.return = returnFiber; - nextEffect = sibling; - return; - } +function recursivelyAccumulateSuspenseyCommit(parentFiber) { + if (parentFiber.subtreeFlags & suspenseyCommitFlag) { + var child = parentFiber.child; - nextEffect = returnFiber; - } + while (child !== null) { + accumulateSuspenseyCommitOnFiber(child); + child = child.sibling; } + } +} - function commitPassiveUnmountInsideDeletedTreeOnFiber( - current, - nearestMountedAncestor - ) { - switch (current.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - commitHookPassiveUnmountEffects( - current, - nearestMountedAncestor, - Passive - ); - break; - } - // TODO: run passive unmount effects when unmounting a root. - // Because passive unmount effects are not currently run, - // the cache instance owned by the root will never be freed. - // When effects are run, the cache should be freed here: - // case HostRoot: { - // if (enableCache) { - // const cache = current.memoizedState.cache; - // releaseCache(cache); - // } - // break; - // } - - case LegacyHiddenComponent: - case OffscreenComponent: { - { - if ( - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - var cache = current.memoizedState.cachePool.pool; // Retain/release the cache used for pending (suspended) nodes. - // Note that this is only reached in the non-suspended/visible case: - // when the content is suspended/hidden, the retain/release occurs - // via the parent Suspense component (see case above). - - if (cache != null) { - retainCache(cache); - } - } - } +function accumulateSuspenseyCommitOnFiber(fiber) { + switch (fiber.tag) { + case HostHoistable: + { + recursivelyAccumulateSuspenseyCommit(fiber); - break; + if (fiber.flags & suspenseyCommitFlag) { + if (fiber.memoizedState !== null) { + suspendResource(); + } } - case SuspenseComponent: { - break; - } + break; + } - case CacheComponent: { - { - var _cache = current.memoizedState.cache; - releaseCache(_cache); - } + case HostComponent: + { + recursivelyAccumulateSuspenseyCommit(fiber); - break; - } + break; } - } - function invokeLayoutEffectMountInDEV(fiber) { + case HostRoot: + case HostPortal: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListMount(Layout | HasEffect, fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } + { + recursivelyAccumulateSuspenseyCommit(fiber); + } - break; - } + break; + } - case ClassComponent: { - var instance = fiber.stateNode; + case OffscreenComponent: + { + var isHidden = fiber.memoizedState !== null; - if (typeof instance.componentDidMount === "function") { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } - } + if (isHidden) ; else { + var current = fiber.alternate; + var wasHidden = current !== null && current.memoizedState !== null; - break; + if (wasHidden) { + // This tree is being revealed. Visit all newly visible suspensey + // instances, even if they're in the current tree. + var prevFlags = suspenseyCommitFlag; + suspenseyCommitFlag = MaySuspendCommit; + recursivelyAccumulateSuspenseyCommit(fiber); + suspenseyCommitFlag = prevFlags; + } else { + recursivelyAccumulateSuspenseyCommit(fiber); } } + + break; } - } - function invokePassiveEffectMountInDEV(fiber) { + default: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListMount(Passive | HasEffect, fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } + recursivelyAccumulateSuspenseyCommit(fiber); + } + } +} - break; - } - } +function detachAlternateSiblings(parentFiber) { + // A fiber was deleted from this parent fiber, but it's still part of the + // previous (alternate) parent fiber's list of children. Because children + // are a linked list, an earlier sibling that's still alive will be + // connected to the deleted fiber via its `alternate`: + // + // live fiber --alternate--> previous live fiber --sibling--> deleted + // fiber + // + // We can't disconnect `alternate` on nodes that haven't been deleted yet, + // but we can disconnect the `sibling` and `child` pointers. + var previousFiber = parentFiber.alternate; + + if (previousFiber !== null) { + var detachedChild = previousFiber.child; + + if (detachedChild !== null) { + previousFiber.child = null; + + do { + // $FlowFixMe[incompatible-use] found when upgrading Flow + var detachedSibling = detachedChild.sibling; // $FlowFixMe[incompatible-use] found when upgrading Flow + + detachedChild.sibling = null; + detachedChild = detachedSibling; + } while (detachedChild !== null); + } + } +} + +function commitHookPassiveUnmountEffects(finishedWork, nearestMountedAncestor, hookFlags) { + if (shouldProfile(finishedWork)) { + startPassiveEffectTimer(); + commitHookEffectListUnmount(hookFlags, finishedWork, nearestMountedAncestor); + recordPassiveEffectDuration(finishedWork); + } else { + commitHookEffectListUnmount(hookFlags, finishedWork, nearestMountedAncestor); + } +} + +function recursivelyTraversePassiveUnmountEffects(parentFiber) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects have fired. + var deletions = parentFiber.deletions; + + if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; // TODO: Convert this to use recursion + + nextEffect = childToDelete; + commitPassiveUnmountEffectsInsideOfDeletedTree_begin(childToDelete, parentFiber); } } - function invokeLayoutEffectUnmountInDEV(fiber) { - { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListUnmount( - Layout | HasEffect, - fiber, - fiber.return - ); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } + detachAlternateSiblings(parentFiber); + } - break; - } + var prevDebugFiber = getCurrentFiber(); // TODO: Split PassiveMask into separate masks for mount and unmount? - case ClassComponent: { - var instance = fiber.stateNode; + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount(fiber, fiber.return, instance); - } + while (child !== null) { + setCurrentFiber(child); + commitPassiveUnmountOnFiber(child); + child = child.sibling; + } + } - break; - } + setCurrentFiber(prevDebugFiber); +} + +function commitPassiveUnmountOnFiber(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraversePassiveUnmountEffects(finishedWork); + + if (finishedWork.flags & Passive$1) { + commitHookPassiveUnmountEffects(finishedWork, finishedWork.return, Passive | HasEffect); } + + break; } - } - function invokePassiveEffectUnmountInDEV(fiber) { + case OffscreenComponent: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListUnmount( - Passive | HasEffect, - fiber, - fiber.return - ); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } - } + var instance = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; + + if (isHidden && instance._visibility & OffscreenPassiveEffectsConnected && ( // For backwards compatibility, don't unmount when a tree suspends. In + // the future we may change this to unmount after a delay. + finishedWork.return === null || finishedWork.return.tag !== SuspenseComponent)) { + // The effects are currently connected. Disconnect them. + // TODO: Add option or heuristic to delay before disconnecting the + // effects. Then if the tree reappears before the delay has elapsed, we + // can skip toggling the effects entirely. + instance._visibility &= ~OffscreenPassiveEffectsConnected; + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + } else { + recursivelyTraversePassiveUnmountEffects(finishedWork); } - } - } - function getCacheForType(resourceType) { - var cache = readContext(CacheContext); - var cacheForType = cache.data.get(resourceType); + break; + } - if (cacheForType === undefined) { - cacheForType = resourceType(); - cache.data.set(resourceType, cacheForType); + default: + { + recursivelyTraversePassiveUnmountEffects(finishedWork); + break; } + } +} - return cacheForType; - } +function recursivelyTraverseDisconnectPassiveEffects(parentFiber) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects have fired. + var deletions = parentFiber.deletions; - var DefaultCacheDispatcher = { - getCacheForType: getCacheForType - }; + if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; // TODO: Convert this to use recursion - if (typeof Symbol === "function" && Symbol.for) { - var symbolFor = Symbol.for; - symbolFor("selector.component"); - symbolFor("selector.has_pseudo_class"); - symbolFor("selector.role"); - symbolFor("selector.test_id"); - symbolFor("selector.text"); + nextEffect = childToDelete; + commitPassiveUnmountEffectsInsideOfDeletedTree_begin(childToDelete, parentFiber); + } } - function isLegacyActEnvironment(fiber) { - { - // Legacy mode. We preserve the behavior of React 17's act. It assumes an - // act environment whenever `jest` is defined, but you can still turn off - // spurious warnings by setting IS_REACT_ACT_ENVIRONMENT explicitly - // to false. - // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global - typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" // $FlowFixMe[cannot-resolve-name] - ? IS_REACT_ACT_ENVIRONMENT - : undefined; // $FlowFixMe[cannot-resolve-name] - Flow doesn't know about jest - return warnsIfNotActing; - } - } - function isConcurrentActEnvironment() { - { - var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global - typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" // $FlowFixMe[cannot-resolve-name] - ? IS_REACT_ACT_ENVIRONMENT - : undefined; - - if ( - !isReactActEnvironmentGlobal && - ReactSharedInternals.actQueue !== null - ) { - // TODO: Include link to relevant documentation page. - error( - "The current testing environment is not configured to support " + - "act(...)" - ); - } - - return isReactActEnvironmentGlobal; - } - } - - var PossiblyWeakMap = typeof WeakMap === "function" ? WeakMap : Map; - var NoContext = - /* */ - 0; - var BatchedContext = - /* */ - 1; - var RenderContext = - /* */ - 2; - var CommitContext = - /* */ - 4; - var RootInProgress = 0; - var RootFatalErrored = 1; - var RootErrored = 2; - var RootSuspended = 3; - var RootSuspendedWithDelay = 4; - var RootCompleted = 5; - var RootDidNotComplete = 6; // Describes where we are in the React execution stack - - var executionContext = NoContext; // The root we're working on - - var workInProgressRoot = null; // The fiber we're working on - - var workInProgress = null; // The lanes we're rendering - - var workInProgressRootRenderLanes = NoLanes; - var NotSuspended = 0; - var SuspendedOnError = 1; - var SuspendedOnData = 2; - var SuspendedOnImmediate = 3; - var SuspendedOnInstance = 4; - var SuspendedOnInstanceAndReadyToContinue = 5; - var SuspendedOnDeprecatedThrowPromise = 6; - var SuspendedAndReadyToContinue = 7; - var SuspendedOnHydration = 8; // When this is true, the work-in-progress fiber just suspended (or errored) and - // we've yet to unwind the stack. In some cases, we may yield to the main thread - // after this happens. If the fiber is pinged before we resume, we can retry - // immediately instead of unwinding the stack. - - var workInProgressSuspendedReason = NotSuspended; - var workInProgressThrownValue = null; // Whether a ping listener was attached during this render. This is slightly - // different that whether something suspended, because we don't add multiple - // listeners to a promise we've already seen (per root and lane). - - var workInProgressRootDidAttachPingListener = false; // A contextual version of workInProgressRootRenderLanes. It is a superset of - // the lanes that we started working on at the root. When we enter a subtree - // that is currently hidden, we add the lanes that would have committed if - // the hidden tree hadn't been deferred. This is modified by the - // HiddenContext module. - // - // Most things in the work loop should deal with workInProgressRootRenderLanes. - // Most things in begin/complete phases should deal with entangledRenderLanes. - - var entangledRenderLanes = NoLanes; // Whether to root completed, errored, suspended, etc. + detachAlternateSiblings(parentFiber); + } - var workInProgressRootExitStatus = RootInProgress; // The work left over by components that were visited during this render. Only - // includes unprocessed updates, not work in bailed out children. + var prevDebugFiber = getCurrentFiber(); // TODO: Check PassiveStatic flag - var workInProgressRootSkippedLanes = NoLanes; // Lanes that were updated (in an interleaved event) during this render. + var child = parentFiber.child; - var workInProgressRootInterleavedUpdatedLanes = NoLanes; // Lanes that were updated during the render phase (*not* an interleaved event). + while (child !== null) { + setCurrentFiber(child); + disconnectPassiveEffect(child); + child = child.sibling; + } - var workInProgressRootPingedLanes = NoLanes; // If this lane scheduled deferred work, this is the lane of the deferred task. + setCurrentFiber(prevDebugFiber); +} - var workInProgressDeferredLane = NoLane; // Errors that are thrown during the render phase. +function disconnectPassiveEffect(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + // TODO: Check PassiveStatic flag + commitHookPassiveUnmountEffects(finishedWork, finishedWork.return, Passive); // When disconnecting passive effects, we fire the effects in the same + // order as during a deletiong: parent before child - var workInProgressRootConcurrentErrors = null; // These are errors that we recovered from without surfacing them to the UI. - // We will log them once the tree commits. + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + break; + } - var workInProgressRootRecoverableErrors = null; // Tracks when an update occurs during the render phase. + case OffscreenComponent: + { + var instance = finishedWork.stateNode; - var workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Thacks when an update occurs during the commit phase. It's a separate - // variable from the one for renders because the commit phase may run - // concurrently to a render phase. + if (instance._visibility & OffscreenPassiveEffectsConnected) { + instance._visibility &= ~OffscreenPassiveEffectsConnected; + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + } - var didIncludeCommitPhaseUpdate = false; // The most recent time we either committed a fallback, or when a fallback was - // filled in with the resolved UI. This lets us throttle the appearance of new - // content as it streams in, to minimize jank. - // TODO: Think of a better name for this variable? + break; + } - var globalMostRecentFallbackTime = 0; - var FALLBACK_THROTTLE_MS = 300; // The absolute time for when we should start giving up on rendering - // more and prefer CPU suspense heuristics instead. + default: + { + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + break; + } + } +} - var workInProgressRootRenderTargetTime = Infinity; // How long a render is supposed to take before we start following CPU - // suspense heuristics and opt out of rendering more content. +function commitPassiveUnmountEffectsInsideOfDeletedTree_begin(deletedSubtreeRoot, nearestMountedAncestor) { + while (nextEffect !== null) { + var fiber = nextEffect; // Deletion effects fire in parent -> child order + // TODO: Check if fiber has a PassiveStatic flag - var RENDER_TIMEOUT_MS = 500; - var workInProgressTransitions = null; + setCurrentFiber(fiber); + commitPassiveUnmountInsideDeletedTreeOnFiber(fiber, nearestMountedAncestor); + resetCurrentFiber(); + var child = fiber.child; // TODO: Only traverse subtree if it has a PassiveStatic flag. - function resetRenderTimer() { - workInProgressRootRenderTargetTime = now$1() + RENDER_TIMEOUT_MS; + if (child !== null) { + child.return = fiber; + nextEffect = child; + } else { + commitPassiveUnmountEffectsInsideOfDeletedTree_complete(deletedSubtreeRoot); } + } +} - function getRenderTargetTime() { - return workInProgressRootRenderTargetTime; - } - var legacyErrorBoundariesThatAlreadyFailed = null; - var rootDoesHavePassiveEffects = false; - var rootWithPendingPassiveEffects = null; - var pendingPassiveEffectsLanes = NoLanes; - var pendingPassiveProfilerEffects = []; - var pendingPassiveEffectsRemainingLanes = NoLanes; - var pendingPassiveTransitions = null; // Use these to prevent an infinite loop of nested updates +function commitPassiveUnmountEffectsInsideOfDeletedTree_complete(deletedSubtreeRoot) { + while (nextEffect !== null) { + var fiber = nextEffect; + var sibling = fiber.sibling; + var returnFiber = fiber.return; // Recursively traverse the entire deleted tree and clean up fiber fields. + // This is more aggressive than ideal, and the long term goal is to only + // have to detach the deleted tree at the root. - var NESTED_UPDATE_LIMIT = 50; - var nestedUpdateCount = 0; - var rootWithNestedUpdates = null; - var isFlushingPassiveEffects = false; - var didScheduleUpdateDuringPassiveEffects = false; - var NESTED_PASSIVE_UPDATE_LIMIT = 50; - var nestedPassiveUpdateCount = 0; - var rootWithPassiveNestedUpdates = null; - var isRunningInsertionEffect = false; - function getWorkInProgressRoot() { - return workInProgressRoot; - } - function getWorkInProgressRootRenderLanes() { - return workInProgressRootRenderLanes; - } - function isWorkLoopSuspendedOnData() { - return workInProgressSuspendedReason === SuspendedOnData; + detachFiberAfterEffects(fiber); + + if (fiber === deletedSubtreeRoot) { + nextEffect = null; + return; } - function requestUpdateLane(fiber) { - // Special cases - var mode = fiber.mode; - if ((mode & ConcurrentMode) === NoMode) { - return SyncLane; - } else if ( - (executionContext & RenderContext) !== NoContext && - workInProgressRootRenderLanes !== NoLanes - ) { - // This is a render phase update. These are not officially supported. The - // old behavior is to give this the same "thread" (lanes) as - // whatever is currently rendering. So if you call `setState` on a component - // that happens later in the same render, it will flush. Ideally, we want to - // remove the special case and treat them as if they came from an - // interleaved event. Regardless, this pattern is not officially supported. - // This behavior is only a fallback. The flag only exists until we can roll - // out the setState warning, since existing code might accidentally rely on - // the current behavior. - return pickArbitraryLane(workInProgressRootRenderLanes); - } + if (sibling !== null) { + sibling.return = returnFiber; + nextEffect = sibling; + return; + } - var transition = requestCurrentTransition(); + nextEffect = returnFiber; + } +} - if (transition !== null) { +function commitPassiveUnmountInsideDeletedTreeOnFiber(current, nearestMountedAncestor) { + switch (current.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + commitHookPassiveUnmountEffects(current, nearestMountedAncestor, Passive); + break; + } + // TODO: run passive unmount effects when unmounting a root. + // Because passive unmount effects are not currently run, + // the cache instance owned by the root will never be freed. + // When effects are run, the cache should be freed here: + // case HostRoot: { + // if (enableCache) { + // const cache = current.memoizedState.cache; + // releaseCache(cache); + // } + // break; + // } + + case LegacyHiddenComponent: + case OffscreenComponent: + { { - if (!transition._updatedFibers) { - transition._updatedFibers = new Set(); + if (current.memoizedState !== null && current.memoizedState.cachePool !== null) { + var cache = current.memoizedState.cachePool.pool; // Retain/release the cache used for pending (suspended) nodes. + // Note that this is only reached in the non-suspended/visible case: + // when the content is suspended/hidden, the retain/release occurs + // via the parent Suspense component (see case above). + + if (cache != null) { + retainCache(cache); + } } - - transition._updatedFibers.add(fiber); } - var actionScopeLane = peekEntangledActionLane(); - return actionScopeLane !== NoLane // We're inside an async action scope. Reuse the same lane. - ? actionScopeLane // We may or may not be inside an async action scope. If we are, this - : // is the first update in that scope. Either way, we need to get a - // fresh transition lane. - requestTransitionLane(); + break; } - return eventPriorityToLane(resolveUpdatePriority()); - } - - function requestRetryLane(fiber) { - // This is a fork of `requestUpdateLane` designed specifically for Suspense - // "retries" — a special update that attempts to flip a Suspense boundary - // from its placeholder state to its primary/resolved state. - // Special cases - var mode = fiber.mode; + case SuspenseComponent: + { - if ((mode & ConcurrentMode) === NoMode) { - return SyncLane; + break; } - return claimNextRetryLane(); - } + case CacheComponent: + { + { + var _cache = current.memoizedState.cache; + releaseCache(_cache); + } - function requestDeferredLane() { - if (workInProgressDeferredLane === NoLane) { - // If there are multiple useDeferredValue hooks in the same render, the - // tasks that they spawn should all be batched together, so they should all - // receive the same lane. - // Check the priority of the current render to decide the priority of the - // deferred task. - // OffscreenLane is used for prerendering, but we also use OffscreenLane - // for incremental hydration. It's given the lowest priority because the - // initial HTML is the same as the final UI. But useDeferredValue during - // hydration is an exception — we need to upgrade the UI to the final - // value. So if we're currently hydrating, we treat it like a transition. - var isPrerendering = - includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) && - !getIsHydrating(); + break; + } + } +} - if (isPrerendering) { - // There's only one OffscreenLane, so if it contains deferred work, we - // should just reschedule using the same lane. - workInProgressDeferredLane = OffscreenLane; - } else { - // Everything else is spawned as a transition. - workInProgressDeferredLane = claimNextTransitionLane(); +function invokeLayoutEffectMountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListMount(Layout | HasEffect, fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } + + break; } - } // Mark the parent Suspense boundary so it knows to spawn the deferred lane. - var suspenseHandler = getSuspenseHandler(); + case ClassComponent: + { + var instance = fiber.stateNode; - if (suspenseHandler !== null) { - // TODO: As an optimization, we shouldn't entangle the lanes at the root; we - // can entangle them using the baseLanes of the Suspense boundary instead. - // We only need to do something special if there's no Suspense boundary. - suspenseHandler.flags |= DidDefer; - } + if (typeof instance.componentDidMount === 'function') { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } + } - return workInProgressDeferredLane; - } - function peekDeferredLane() { - return workInProgressDeferredLane; + break; + } } - function scheduleUpdateOnFiber(root, fiber, lane) { - { - if (isRunningInsertionEffect) { - error("useInsertionEffect must not schedule updates."); + } +} + +function invokePassiveEffectMountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListMount(Passive | HasEffect, fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } + + break; } - } + } + } +} - { - if (isFlushingPassiveEffects) { - didScheduleUpdateDuringPassiveEffects = true; - } - } // Check if the work loop is currently suspended and waiting for data to - // finish loading. - - if ( - // Suspended render phase - (root === workInProgressRoot && - workInProgressSuspendedReason === SuspendedOnData) || // Suspended commit phase - root.cancelPendingCommit !== null - ) { - // The incoming update might unblock the current render. Interrupt the - // current attempt and restart from the top. - prepareFreshStack(root, NoLanes); - markRootSuspended( - root, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } // Mark that the root has a pending update. - - markRootUpdated(root, lane); - - if ( - (executionContext & RenderContext) !== NoLanes && - root === workInProgressRoot - ) { - // This update was dispatched during the render phase. This is a mistake - // if the update originates from user space (with the exception of local - // hook updates, which are handled differently and don't reach this - // function), but there are some internal React features that use this as - // an implementation detail, like selective hydration. - warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase - } else { - // This is a normal update, scheduled from outside the render phase. For - // example, during an input event. +function invokeLayoutEffectUnmountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: { - if (isDevToolsPresent) { - addFiberToLanesMap(root, fiber, lane); + try { + commitHookEffectListUnmount(Layout | HasEffect, fiber, fiber.return); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); } + + break; } - warnIfUpdatesNotWrappedWithActDEV(fiber); + case ClassComponent: + { + var instance = fiber.stateNode; - if (root === workInProgressRoot) { - // Received an update to a tree that's in the middle of rendering. Mark - // that there was an interleaved update work on this root. - if ((executionContext & RenderContext) === NoContext) { - workInProgressRootInterleavedUpdatedLanes = mergeLanes( - workInProgressRootInterleavedUpdatedLanes, - lane - ); + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(fiber, fiber.return, instance); } - if (workInProgressRootExitStatus === RootSuspendedWithDelay) { - // The root already suspended with a delay, which means this render - // definitely won't finish. Since we have a new update, let's mark it as - // suspended now, right before marking the incoming update. This has the - // effect of interrupting the current render and switching to the update. - // TODO: Make sure this doesn't override pings that happen while we've - // already started rendering. - markRootSuspended( - root, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } + break; } + } + } +} - ensureRootIsScheduled(root); - - if ( - lane === SyncLane && - executionContext === NoContext && - !disableLegacyMode && - (fiber.mode & ConcurrentMode) === NoMode - ) { - if (ReactSharedInternals.isBatchingLegacy); - else { - // Flush the synchronous work now, unless we're already working or inside - // a batch. This is intentionally inside scheduleUpdateOnFiber instead of - // scheduleCallbackForFiber to preserve the ability to schedule a callback - // without immediately flushing it. We only do this for user-initiated - // updates, to preserve historical behavior of legacy mode. - resetRenderTimer(); - flushSyncWorkOnLegacyRootsOnly(); +function invokePassiveEffectUnmountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListUnmount(Passive | HasEffect, fiber, fiber.return); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); } } - } } - function isUnsafeClassRenderPhaseUpdate(fiber) { - // Check if this is a render phase update. Only called by class components, - // which special (deprecated) behavior for UNSAFE_componentWillReceive props. - return (executionContext & RenderContext) !== NoContext; - } // This is the entry point for every concurrent task, i.e. anything that - // goes through Scheduler. - - function performConcurrentWorkOnRoot(root, didTimeout) { - { - resetNestedUpdateFlag(); - } - - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); - } // Flush any pending passive effects before deciding which lanes to work on, - // in case they schedule additional work. - - var originalCallbackNode = root.callbackNode; - var didFlushPassiveEffects = flushPassiveEffects(); - - if (didFlushPassiveEffects) { - // Something in the passive effect phase may have canceled the current task. - // Check if the task node for this root was changed. - if (root.callbackNode !== originalCallbackNode) { - // The current task was canceled. Exit. We don't need to call - // `ensureRootIsScheduled` because the check above implies either that - // there's a new task, or that there's no remaining work on this root. - return null; - } - } // Determine the next lanes to work on, using the fields stored - // on the root. - // TODO: This was already computed in the caller. Pass it as an argument. + } +} - var lanes = getNextLanes( - root, - root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes - ); +function getCacheForType(resourceType) { - if (lanes === NoLanes) { - // Defensive coding. This is never expected to happen. - return null; - } // We disable time-slicing in some cases: if the work has been CPU-bound - // for too long ("expired" work, to prevent starvation), or we're in - // sync-updates-by-default mode. - // TODO: We only check `didTimeout` defensively, to account for a Scheduler - // bug we're still investigating. Once the bug in Scheduler is fixed, - // we can remove this, since we track expiration ourselves. - - var shouldTimeSlice = - !includesBlockingLane(root, lanes) && - !includesExpiredLane(root, lanes) && - !didTimeout; - var exitStatus = shouldTimeSlice - ? renderRootConcurrent(root, lanes) - : renderRootSync(root, lanes); - - if (exitStatus !== RootInProgress) { - var renderWasConcurrent = shouldTimeSlice; + var cache = readContext(CacheContext); + var cacheForType = cache.data.get(resourceType); - do { - if (exitStatus === RootDidNotComplete) { - // The render unwound without completing the tree. This happens in special - // cases where need to exit the current render without producing a - // consistent tree or committing. - markRootSuspended(root, lanes, NoLane); - } else { - // The render completed. - // Check if this render may have yielded to a concurrent event, and if so, - // confirm that any newly rendered stores are consistent. - // TODO: It's possible that even a concurrent render may never have yielded - // to the main thread, if it was fast enough, or if it expired. We could - // skip the consistency check in that case, too. - var finishedWork = root.current.alternate; - - if ( - renderWasConcurrent && - !isRenderConsistentWithExternalStores(finishedWork) - ) { - // A store was mutated in an interleaved event. Render again, - // synchronously, to block further mutations. - exitStatus = renderRootSync(root, lanes); // We assume the tree is now consistent because we didn't yield to any - // concurrent events. - - renderWasConcurrent = false; // Need to check the exit status again. + if (cacheForType === undefined) { + cacheForType = resourceType(); + cache.data.set(resourceType, cacheForType); + } - continue; - } // Check if something threw - - if (exitStatus === RootErrored) { - var lanesThatJustErrored = lanes; - var errorRetryLanes = getLanesToRetrySynchronouslyOnError( - root, - lanesThatJustErrored - ); - - if (errorRetryLanes !== NoLanes) { - lanes = errorRetryLanes; - exitStatus = recoverFromConcurrentError( - root, - lanesThatJustErrored, - errorRetryLanes - ); - renderWasConcurrent = false; // Need to check the exit status again. - - if (exitStatus !== RootErrored) { - // The root did not error this time. Restart the exit algorithm - // from the beginning. - // TODO: Refactor the exit algorithm to be less confusing. Maybe - // more branches + recursion instead of a loop. I think the only - // thing that causes it to be a loop is the RootDidNotComplete - // check. If that's true, then we don't need a loop/recursion - // at all. - continue; - } - } - } + return cacheForType; +} - if (exitStatus === RootFatalErrored) { - prepareFreshStack(root, NoLanes); - markRootSuspended(root, lanes, NoLane); - break; - } // We now have a consistent tree. The next step is either to commit it, - // or, if something suspended, wait to commit it after a timeout. +var DefaultCacheDispatcher = { + getCacheForType: getCacheForType +}; + +if (typeof Symbol === 'function' && Symbol.for) { + var symbolFor = Symbol.for; + symbolFor('selector.component'); + symbolFor('selector.has_pseudo_class'); + symbolFor('selector.role'); + symbolFor('selector.test_id'); + symbolFor('selector.text'); +} - root.finishedWork = finishedWork; - root.finishedLanes = lanes; - finishConcurrentRender(root, exitStatus, finishedWork, lanes); - } +function isLegacyActEnvironment(fiber) { + { + // Legacy mode. We preserve the behavior of React 17's act. It assumes an + // act environment whenever `jest` is defined, but you can still turn off + // spurious warnings by setting IS_REACT_ACT_ENVIRONMENT explicitly + // to false. + // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global + typeof IS_REACT_ACT_ENVIRONMENT !== 'undefined' ? // $FlowFixMe[cannot-resolve-name] + IS_REACT_ACT_ENVIRONMENT : undefined; // $FlowFixMe[cannot-resolve-name] - Flow doesn't know about jest + return warnsIfNotActing ; + } +} +function isConcurrentActEnvironment() { + { + var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global + typeof IS_REACT_ACT_ENVIRONMENT !== 'undefined' ? // $FlowFixMe[cannot-resolve-name] + IS_REACT_ACT_ENVIRONMENT : undefined; - break; - } while (true); - } - - ensureRootIsScheduled(root); - return getContinuationForRoot(root, originalCallbackNode); - } - - function recoverFromConcurrentError( - root, - originallyAttemptedLanes, - errorRetryLanes - ) { - // If an error occurred during hydration, discard server response and fall - // back to client side render. - // Before rendering again, save the errors from the previous attempt. - var errorsFromFirstAttempt = workInProgressRootConcurrentErrors; - var wasRootDehydrated = supportsHydration; - - var exitStatus = renderRootSync(root, errorRetryLanes); - - if (exitStatus !== RootErrored) { - // Successfully finished rendering on retry - if (workInProgressRootDidAttachPingListener && !wasRootDehydrated) { - // During the synchronous render, we attached additional ping listeners. - // This is highly suggestive of an uncached promise (though it's not the - // only reason this would happen). If it was an uncached promise, then - // it may have masked a downstream error from ocurring without actually - // fixing it. Example: - // - // use(Promise.resolve('uncached')) - // throw new Error('Oops!') - // - // When this happens, there's a conflict between blocking potential - // concurrent data races and unwrapping uncached promise values. We - // have to choose one or the other. Because the data race recovery is - // a last ditch effort, we'll disable it. - root.errorRecoveryDisabledLanes = mergeLanes( - root.errorRecoveryDisabledLanes, - originallyAttemptedLanes - ); // Mark the current render as suspended and force it to restart. Once - // these lanes finish successfully, we'll re-enable the error recovery - // mechanism for subsequent updates. + if (!isReactActEnvironmentGlobal && ReactSharedInternals.actQueue !== null) { + // TODO: Include link to relevant documentation page. + error('The current testing environment is not configured to support ' + 'act(...)'); + } - workInProgressRootInterleavedUpdatedLanes |= originallyAttemptedLanes; - return RootSuspendedWithDelay; - } // The errors from the failed first attempt have been recovered. Add - // them to the collection of recoverable errors. We'll log them in the - // commit phase. + return isReactActEnvironmentGlobal; + } +} - var errorsFromSecondAttempt = workInProgressRootRecoverableErrors; - workInProgressRootRecoverableErrors = errorsFromFirstAttempt; // The errors from the second attempt should be queued after the errors - // from the first attempt, to preserve the causal sequence. +var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; +var NoContext = +/* */ +0; +var BatchedContext = +/* */ +1; +var RenderContext = +/* */ +2; +var CommitContext = +/* */ +4; +var RootInProgress = 0; +var RootFatalErrored = 1; +var RootErrored = 2; +var RootSuspended = 3; +var RootSuspendedWithDelay = 4; +var RootCompleted = 5; +var RootDidNotComplete = 6; // Describes where we are in the React execution stack + +var executionContext = NoContext; // The root we're working on + +var workInProgressRoot = null; // The fiber we're working on + +var workInProgress = null; // The lanes we're rendering + +var workInProgressRootRenderLanes = NoLanes; +var NotSuspended = 0; +var SuspendedOnError = 1; +var SuspendedOnData = 2; +var SuspendedOnImmediate = 3; +var SuspendedOnInstance = 4; +var SuspendedOnInstanceAndReadyToContinue = 5; +var SuspendedOnDeprecatedThrowPromise = 6; +var SuspendedAndReadyToContinue = 7; +var SuspendedOnHydration = 8; // When this is true, the work-in-progress fiber just suspended (or errored) and +// we've yet to unwind the stack. In some cases, we may yield to the main thread +// after this happens. If the fiber is pinged before we resume, we can retry +// immediately instead of unwinding the stack. + +var workInProgressSuspendedReason = NotSuspended; +var workInProgressThrownValue = null; // Whether a ping listener was attached during this render. This is slightly +// different that whether something suspended, because we don't add multiple +// listeners to a promise we've already seen (per root and lane). + +var workInProgressRootDidAttachPingListener = false; // A contextual version of workInProgressRootRenderLanes. It is a superset of +// the lanes that we started working on at the root. When we enter a subtree +// that is currently hidden, we add the lanes that would have committed if +// the hidden tree hadn't been deferred. This is modified by the +// HiddenContext module. +// +// Most things in the work loop should deal with workInProgressRootRenderLanes. +// Most things in begin/complete phases should deal with entangledRenderLanes. + +var entangledRenderLanes = NoLanes; // Whether to root completed, errored, suspended, etc. + +var workInProgressRootExitStatus = RootInProgress; // The work left over by components that were visited during this render. Only +// includes unprocessed updates, not work in bailed out children. + +var workInProgressRootSkippedLanes = NoLanes; // Lanes that were updated (in an interleaved event) during this render. + +var workInProgressRootInterleavedUpdatedLanes = NoLanes; // Lanes that were updated during the render phase (*not* an interleaved event). + +var workInProgressRootPingedLanes = NoLanes; // If this lane scheduled deferred work, this is the lane of the deferred task. + +var workInProgressDeferredLane = NoLane; // Errors that are thrown during the render phase. + +var workInProgressRootConcurrentErrors = null; // These are errors that we recovered from without surfacing them to the UI. +// We will log them once the tree commits. + +var workInProgressRootRecoverableErrors = null; // Tracks when an update occurs during the render phase. + +var workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Thacks when an update occurs during the commit phase. It's a separate +// variable from the one for renders because the commit phase may run +// concurrently to a render phase. + +var didIncludeCommitPhaseUpdate = false; // The most recent time we either committed a fallback, or when a fallback was +// filled in with the resolved UI. This lets us throttle the appearance of new +// content as it streams in, to minimize jank. +// TODO: Think of a better name for this variable? + +var globalMostRecentFallbackTime = 0; +var FALLBACK_THROTTLE_MS = 300; // The absolute time for when we should start giving up on rendering +// more and prefer CPU suspense heuristics instead. + +var workInProgressRootRenderTargetTime = Infinity; // How long a render is supposed to take before we start following CPU +// suspense heuristics and opt out of rendering more content. + +var RENDER_TIMEOUT_MS = 500; +var workInProgressTransitions = null; + +function resetRenderTimer() { + workInProgressRootRenderTargetTime = now$1() + RENDER_TIMEOUT_MS; +} - if (errorsFromSecondAttempt !== null) { - queueRecoverableErrors(errorsFromSecondAttempt); - } +function getRenderTargetTime() { + return workInProgressRootRenderTargetTime; +} +var legacyErrorBoundariesThatAlreadyFailed = null; +var rootDoesHavePassiveEffects = false; +var rootWithPendingPassiveEffects = null; +var pendingPassiveEffectsLanes = NoLanes; +var pendingPassiveProfilerEffects = []; +var pendingPassiveEffectsRemainingLanes = NoLanes; +var pendingPassiveTransitions = null; // Use these to prevent an infinite loop of nested updates + +var NESTED_UPDATE_LIMIT = 50; +var nestedUpdateCount = 0; +var rootWithNestedUpdates = null; +var isFlushingPassiveEffects = false; +var didScheduleUpdateDuringPassiveEffects = false; +var NESTED_PASSIVE_UPDATE_LIMIT = 50; +var nestedPassiveUpdateCount = 0; +var rootWithPassiveNestedUpdates = null; +var isRunningInsertionEffect = false; +function getWorkInProgressRoot() { + return workInProgressRoot; +} +function getWorkInProgressRootRenderLanes() { + return workInProgressRootRenderLanes; +} +function isWorkLoopSuspendedOnData() { + return workInProgressSuspendedReason === SuspendedOnData; +} +function requestUpdateLane(fiber) { + // Special cases + var mode = fiber.mode; + + if ((mode & ConcurrentMode) === NoMode) { + return SyncLane; + } else if ((executionContext & RenderContext) !== NoContext && workInProgressRootRenderLanes !== NoLanes) { + // This is a render phase update. These are not officially supported. The + // old behavior is to give this the same "thread" (lanes) as + // whatever is currently rendering. So if you call `setState` on a component + // that happens later in the same render, it will flush. Ideally, we want to + // remove the special case and treat them as if they came from an + // interleaved event. Regardless, this pattern is not officially supported. + // This behavior is only a fallback. The flag only exists until we can roll + // out the setState warning, since existing code might accidentally rely on + // the current behavior. + return pickArbitraryLane(workInProgressRootRenderLanes); + } + + var transition = requestCurrentTransition(); + + if (transition !== null) { + { + if (!transition._updatedFibers) { + transition._updatedFibers = new Set(); } - return exitStatus; + transition._updatedFibers.add(fiber); } - function queueRecoverableErrors(errors) { - if (workInProgressRootRecoverableErrors === null) { - workInProgressRootRecoverableErrors = errors; - } else { - // $FlowFixMe[method-unbinding] - workInProgressRootRecoverableErrors.push.apply( - workInProgressRootRecoverableErrors, - errors - ); - } - } - - function finishConcurrentRender(root, exitStatus, finishedWork, lanes) { - // TODO: The fact that most of these branches are identical suggests that some - // of the exit statuses are not best modeled as exit statuses and should be - // tracked orthogonally. - switch (exitStatus) { - case RootInProgress: - case RootFatalErrored: { - throw new Error("Root did not complete. This is a bug in React."); - } - - case RootSuspendedWithDelay: { - if (includesOnlyTransitions(lanes)) { - // This is a transition, so we should exit without committing a - // placeholder and without scheduling a timeout. Delay indefinitely - // until we receive more data. - markRootSuspended(root, lanes, workInProgressDeferredLane); - return; - } // Commit the placeholder. + var actionScopeLane = peekEntangledActionLane(); + return actionScopeLane !== NoLane ? // We're inside an async action scope. Reuse the same lane. + actionScopeLane : // We may or may not be inside an async action scope. If we are, this + // is the first update in that scope. Either way, we need to get a + // fresh transition lane. + requestTransitionLane(); + } - break; - } + return eventPriorityToLane(resolveUpdatePriority()); +} - case RootErrored: { - // This render errored. Ignore any recoverable errors because we weren't actually - // able to recover. Instead, whatever the final errors were is the ones we log. - // This ensures that we only log the actual client side error if it's just a plain - // error thrown from a component on the server and the client. - workInProgressRootRecoverableErrors = null; - break; - } +function requestRetryLane(fiber) { + // This is a fork of `requestUpdateLane` designed specifically for Suspense + // "retries" — a special update that attempts to flip a Suspense boundary + // from its placeholder state to its primary/resolved state. + // Special cases + var mode = fiber.mode; - case RootSuspended: - case RootCompleted: { - break; - } + if ((mode & ConcurrentMode) === NoMode) { + return SyncLane; + } - default: { - throw new Error("Unknown root exit status."); - } + return claimNextRetryLane(); +} + +function requestDeferredLane() { + if (workInProgressDeferredLane === NoLane) { + // If there are multiple useDeferredValue hooks in the same render, the + // tasks that they spawn should all be batched together, so they should all + // receive the same lane. + // Check the priority of the current render to decide the priority of the + // deferred task. + // OffscreenLane is used for prerendering, but we also use OffscreenLane + // for incremental hydration. It's given the lowest priority because the + // initial HTML is the same as the final UI. But useDeferredValue during + // hydration is an exception — we need to upgrade the UI to the final + // value. So if we're currently hydrating, we treat it like a transition. + var isPrerendering = includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) && !getIsHydrating(); + + if (isPrerendering) { + // There's only one OffscreenLane, so if it contains deferred work, we + // should just reschedule using the same lane. + workInProgressDeferredLane = OffscreenLane; + } else { + // Everything else is spawned as a transition. + workInProgressDeferredLane = claimNextTransitionLane(); + } + } // Mark the parent Suspense boundary so it knows to spawn the deferred lane. + + + var suspenseHandler = getSuspenseHandler(); + + if (suspenseHandler !== null) { + // TODO: As an optimization, we shouldn't entangle the lanes at the root; we + // can entangle them using the baseLanes of the Suspense boundary instead. + // We only need to do something special if there's no Suspense boundary. + suspenseHandler.flags |= DidDefer; + } + + return workInProgressDeferredLane; +} +function peekDeferredLane() { + return workInProgressDeferredLane; +} +function scheduleUpdateOnFiber(root, fiber, lane) { + { + if (isRunningInsertionEffect) { + error('useInsertionEffect must not schedule updates.'); + } + } + + { + if (isFlushingPassiveEffects) { + didScheduleUpdateDuringPassiveEffects = true; + } + } // Check if the work loop is currently suspended and waiting for data to + // finish loading. + + + if ( // Suspended render phase + root === workInProgressRoot && workInProgressSuspendedReason === SuspendedOnData || // Suspended commit phase + root.cancelPendingCommit !== null) { + // The incoming update might unblock the current render. Interrupt the + // current attempt and restart from the top. + prepareFreshStack(root, NoLanes); + markRootSuspended(root, workInProgressRootRenderLanes, workInProgressDeferredLane); + } // Mark that the root has a pending update. + + + markRootUpdated(root, lane); + + if ((executionContext & RenderContext) !== NoLanes && root === workInProgressRoot) { + // This update was dispatched during the render phase. This is a mistake + // if the update originates from user space (with the exception of local + // hook updates, which are handled differently and don't reach this + // function), but there are some internal React features that use this as + // an implementation detail, like selective hydration. + warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase + } else { + // This is a normal update, scheduled from outside the render phase. For + // example, during an input event. + { + if (isDevToolsPresent) { + addFiberToLanesMap(root, fiber, lane); } + } - if (shouldForceFlushFallbacksInDEV()) { - // We're inside an `act` scope. Commit immediately. - commitRoot( - root, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - workInProgressDeferredLane - ); - } else { - if ( - includesOnlyRetries(lanes) && - (alwaysThrottleRetries || exitStatus === RootSuspended) - ) { - // This render only included retries, no updates. Throttle committing - // retries so that we don't show too many loading states too quickly. - var msUntilTimeout = - globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now$1(); // Don't bother with a very short suspense time. - - if (msUntilTimeout > 10) { - markRootSuspended(root, lanes, workInProgressDeferredLane); - var nextLanes = getNextLanes(root, NoLanes); - - if (nextLanes !== NoLanes) { - // There's additional work we can do on this root. We might as well - // attempt to work on that while we're suspended. - return; - } // The render is suspended, it hasn't timed out, and there's no - // lower priority work to do. Instead of committing the fallback - // immediately, wait for more data to arrive. - // TODO: Combine retry throttling with Suspensey commits. Right now they - // run one after the other. - - root.timeoutHandle = scheduleTimeout( - commitRootWhenReady.bind( - null, - root, - finishedWork, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - lanes, - workInProgressDeferredLane - ), - msUntilTimeout - ); - return; - } - } + warnIfUpdatesNotWrappedWithActDEV(fiber); - commitRootWhenReady( - root, - finishedWork, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - lanes, - workInProgressDeferredLane - ); - } - } - - function commitRootWhenReady( - root, - finishedWork, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - lanes, - spawnedLane - ) { - // TODO: Combine retry throttling with Suspensey commits. Right now they run - // one after the other. - if (includesOnlyNonUrgentLanes(lanes)) { - // the suspensey resources. The renderer is responsible for accumulating - // all the load events. This all happens in a single synchronous - // transaction, so it track state in its own module scope. - - accumulateSuspenseyCommit(finishedWork); // At the end, ask the renderer if it's ready to commit, or if we should - // suspend. If it's not ready, it will return a callback to subscribe to - // a ready event. - - var schedulePendingCommit = waitForCommitToBeReady(); - - if (schedulePendingCommit !== null) { - // NOTE: waitForCommitToBeReady returns a subscribe function so that we - // only allocate a function if the commit isn't ready yet. The other - // pattern would be to always pass a callback to waitForCommitToBeReady. - // Not yet ready to commit. Delay the commit until the renderer notifies - // us that it's ready. This will be canceled if we start work on the - // root again. - root.cancelPendingCommit = schedulePendingCommit( - commitRoot.bind( - null, - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate - ) - ); - markRootSuspended(root, lanes, spawnedLane); - return; - } - } // Otherwise, commit immediately. + if (root === workInProgressRoot) { + // Received an update to a tree that's in the middle of rendering. Mark + // that there was an interleaved update work on this root. + if ((executionContext & RenderContext) === NoContext) { + workInProgressRootInterleavedUpdatedLanes = mergeLanes(workInProgressRootInterleavedUpdatedLanes, lane); + } + + if (workInProgressRootExitStatus === RootSuspendedWithDelay) { + // The root already suspended with a delay, which means this render + // definitely won't finish. Since we have a new update, let's mark it as + // suspended now, right before marking the incoming update. This has the + // effect of interrupting the current render and switching to the update. + // TODO: Make sure this doesn't override pings that happen while we've + // already started rendering. + markRootSuspended(root, workInProgressRootRenderLanes, workInProgressDeferredLane); + } + } - commitRoot( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - spawnedLane - ); + ensureRootIsScheduled(root); + + if (lane === SyncLane && executionContext === NoContext && !disableLegacyMode && (fiber.mode & ConcurrentMode) === NoMode) { + if (ReactSharedInternals.isBatchingLegacy) ; else { + // Flush the synchronous work now, unless we're already working or inside + // a batch. This is intentionally inside scheduleUpdateOnFiber instead of + // scheduleCallbackForFiber to preserve the ability to schedule a callback + // without immediately flushing it. We only do this for user-initiated + // updates, to preserve historical behavior of legacy mode. + resetRenderTimer(); + flushSyncWorkOnLegacyRootsOnly(); + } + } + } +} +function isUnsafeClassRenderPhaseUpdate(fiber) { + // Check if this is a render phase update. Only called by class components, + // which special (deprecated) behavior for UNSAFE_componentWillReceive props. + return (executionContext & RenderContext) !== NoContext; +} // This is the entry point for every concurrent task, i.e. anything that +// goes through Scheduler. + +function performConcurrentWorkOnRoot(root, didTimeout) { + { + resetNestedUpdateFlag(); + } + + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } // Flush any pending passive effects before deciding which lanes to work on, + // in case they schedule additional work. + + + var originalCallbackNode = root.callbackNode; + var didFlushPassiveEffects = flushPassiveEffects(); + + if (didFlushPassiveEffects) { + // Something in the passive effect phase may have canceled the current task. + // Check if the task node for this root was changed. + if (root.callbackNode !== originalCallbackNode) { + // The current task was canceled. Exit. We don't need to call + // `ensureRootIsScheduled` because the check above implies either that + // there's a new task, or that there's no remaining work on this root. + return null; } + } // Determine the next lanes to work on, using the fields stored + // on the root. + // TODO: This was already computed in the caller. Pass it as an argument. - function isRenderConsistentWithExternalStores(finishedWork) { - // Search the rendered tree for external store reads, and check whether the - // stores were mutated in a concurrent event. Intentionally using an iterative - // loop instead of recursion so we can exit early. - var node = finishedWork; - while (true) { - if (node.flags & StoreConsistency) { - var updateQueue = node.updateQueue; + var lanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); - if (updateQueue !== null) { - var checks = updateQueue.stores; - - if (checks !== null) { - for (var i = 0; i < checks.length; i++) { - var check = checks[i]; - var getSnapshot = check.getSnapshot; - var renderedValue = check.value; - - try { - if (!objectIs(getSnapshot(), renderedValue)) { - // Found an inconsistent store. - return false; - } - } catch (error) { - // If `getSnapshot` throws, return `false`. This will schedule - // a re-render, and the error will be rethrown during render. - return false; - } - } + if (lanes === NoLanes) { + // Defensive coding. This is never expected to happen. + return null; + } // We disable time-slicing in some cases: if the work has been CPU-bound + // for too long ("expired" work, to prevent starvation), or we're in + // sync-updates-by-default mode. + // TODO: We only check `didTimeout` defensively, to account for a Scheduler + // bug we're still investigating. Once the bug in Scheduler is fixed, + // we can remove this, since we track expiration ourselves. + + + var shouldTimeSlice = !includesBlockingLane(root, lanes) && !includesExpiredLane(root, lanes) && (!didTimeout); + var exitStatus = shouldTimeSlice ? renderRootConcurrent(root, lanes) : renderRootSync(root, lanes); + + if (exitStatus !== RootInProgress) { + var renderWasConcurrent = shouldTimeSlice; + + do { + if (exitStatus === RootDidNotComplete) { + // The render unwound without completing the tree. This happens in special + // cases where need to exit the current render without producing a + // consistent tree or committing. + markRootSuspended(root, lanes, NoLane); + } else { + // The render completed. + // Check if this render may have yielded to a concurrent event, and if so, + // confirm that any newly rendered stores are consistent. + // TODO: It's possible that even a concurrent render may never have yielded + // to the main thread, if it was fast enough, or if it expired. We could + // skip the consistency check in that case, too. + var finishedWork = root.current.alternate; + + if (renderWasConcurrent && !isRenderConsistentWithExternalStores(finishedWork)) { + // A store was mutated in an interleaved event. Render again, + // synchronously, to block further mutations. + exitStatus = renderRootSync(root, lanes); // We assume the tree is now consistent because we didn't yield to any + // concurrent events. + + renderWasConcurrent = false; // Need to check the exit status again. + + continue; + } // Check if something threw + + + if (exitStatus === RootErrored) { + var lanesThatJustErrored = lanes; + var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root, lanesThatJustErrored); + + if (errorRetryLanes !== NoLanes) { + lanes = errorRetryLanes; + exitStatus = recoverFromConcurrentError(root, lanesThatJustErrored, errorRetryLanes); + renderWasConcurrent = false; // Need to check the exit status again. + + if (exitStatus !== RootErrored) { + // The root did not error this time. Restart the exit algorithm + // from the beginning. + // TODO: Refactor the exit algorithm to be less confusing. Maybe + // more branches + recursion instead of a loop. I think the only + // thing that causes it to be a loop is the RootDidNotComplete + // check. If that's true, then we don't need a loop/recursion + // at all. + continue; } } } - var child = node.child; + if (exitStatus === RootFatalErrored) { + prepareFreshStack(root, NoLanes); + markRootSuspended(root, lanes, NoLane); + break; + } // We now have a consistent tree. The next step is either to commit it, + // or, if something suspended, wait to commit it after a timeout. - if (node.subtreeFlags & StoreConsistency && child !== null) { - child.return = node; - node = child; - continue; - } - if (node === finishedWork) { - return true; - } + root.finishedWork = finishedWork; + root.finishedLanes = lanes; + finishConcurrentRender(root, exitStatus, finishedWork, lanes); + } - while (node.sibling === null) { - if (node.return === null || node.return === finishedWork) { - return true; - } + break; + } while (true); + } - node = node.return; - } + ensureRootIsScheduled(root); + return getContinuationForRoot(root, originalCallbackNode); +} - node.sibling.return = node.return; - node = node.sibling; - } // Flow doesn't know this is unreachable, but eslint does - // eslint-disable-next-line no-unreachable +function recoverFromConcurrentError(root, originallyAttemptedLanes, errorRetryLanes) { + // If an error occurred during hydration, discard server response and fall + // back to client side render. + // Before rendering again, save the errors from the previous attempt. + var errorsFromFirstAttempt = workInProgressRootConcurrentErrors; + var wasRootDehydrated = supportsHydration ; + + var exitStatus = renderRootSync(root, errorRetryLanes); + + if (exitStatus !== RootErrored) { + // Successfully finished rendering on retry + if (workInProgressRootDidAttachPingListener && !wasRootDehydrated) { + // During the synchronous render, we attached additional ping listeners. + // This is highly suggestive of an uncached promise (though it's not the + // only reason this would happen). If it was an uncached promise, then + // it may have masked a downstream error from ocurring without actually + // fixing it. Example: + // + // use(Promise.resolve('uncached')) + // throw new Error('Oops!') + // + // When this happens, there's a conflict between blocking potential + // concurrent data races and unwrapping uncached promise values. We + // have to choose one or the other. Because the data race recovery is + // a last ditch effort, we'll disable it. + root.errorRecoveryDisabledLanes = mergeLanes(root.errorRecoveryDisabledLanes, originallyAttemptedLanes); // Mark the current render as suspended and force it to restart. Once + // these lanes finish successfully, we'll re-enable the error recovery + // mechanism for subsequent updates. - return true; - } // The extra indirections around markRootUpdated and markRootSuspended is - // needed to avoid a circular dependency between this module and - // ReactFiberLane. There's probably a better way to split up these modules and - // avoid this problem. Perhaps all the root-marking functions should move into - // the work loop. + workInProgressRootInterleavedUpdatedLanes |= originallyAttemptedLanes; + return RootSuspendedWithDelay; + } // The errors from the failed first attempt have been recovered. Add + // them to the collection of recoverable errors. We'll log them in the + // commit phase. - function markRootUpdated(root, updatedLanes) { - markRootUpdated$1(root, updatedLanes); - if (enableInfiniteRenderLoopDetection) { - // Check for recursive updates - if (executionContext & RenderContext) { - workInProgressRootDidIncludeRecursiveRenderUpdate = true; - } else if (executionContext & CommitContext) { - didIncludeCommitPhaseUpdate = true; - } + var errorsFromSecondAttempt = workInProgressRootRecoverableErrors; + workInProgressRootRecoverableErrors = errorsFromFirstAttempt; // The errors from the second attempt should be queued after the errors + // from the first attempt, to preserve the causal sequence. - throwIfInfiniteUpdateLoopDetected(); - } + if (errorsFromSecondAttempt !== null) { + queueRecoverableErrors(errorsFromSecondAttempt); } + } - function markRootPinged(root, pingedLanes) { - markRootPinged$1(root, pingedLanes); + return exitStatus; +} - if (enableInfiniteRenderLoopDetection) { - // Check for recursive pings. Pings are conceptually different from updates in - // other contexts but we call it an "update" in this context because - // repeatedly pinging a suspended render can cause a recursive render loop. - // The relevant property is that it can result in a new render attempt - // being scheduled. - if (executionContext & RenderContext) { - workInProgressRootDidIncludeRecursiveRenderUpdate = true; - } else if (executionContext & CommitContext) { - didIncludeCommitPhaseUpdate = true; - } +function queueRecoverableErrors(errors) { + if (workInProgressRootRecoverableErrors === null) { + workInProgressRootRecoverableErrors = errors; + } else { + // $FlowFixMe[method-unbinding] + workInProgressRootRecoverableErrors.push.apply(workInProgressRootRecoverableErrors, errors); + } +} - throwIfInfiniteUpdateLoopDetected(); +function finishConcurrentRender(root, exitStatus, finishedWork, lanes) { + // TODO: The fact that most of these branches are identical suggests that some + // of the exit statuses are not best modeled as exit statuses and should be + // tracked orthogonally. + switch (exitStatus) { + case RootInProgress: + case RootFatalErrored: + { + throw new Error('Root did not complete. This is a bug in React.'); } - } - function markRootSuspended(root, suspendedLanes, spawnedLane) { - // When suspending, we should always exclude lanes that were pinged or (more - // rarely, since we try to avoid it) updated during the render phase. - suspendedLanes = removeLanes( - suspendedLanes, - workInProgressRootPingedLanes - ); - suspendedLanes = removeLanes( - suspendedLanes, - workInProgressRootInterleavedUpdatedLanes - ); + case RootSuspendedWithDelay: + { + if (includesOnlyTransitions(lanes)) { + // This is a transition, so we should exit without committing a + // placeholder and without scheduling a timeout. Delay indefinitely + // until we receive more data. + markRootSuspended(root, lanes, workInProgressDeferredLane); + return; + } // Commit the placeholder. - markRootSuspended$1(root, suspendedLanes, spawnedLane); - } // This is the entry point for synchronous tasks that don't go - // through Scheduler - function performSyncWorkOnRoot(root, lanes) { - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); + break; } - var didFlushPassiveEffects = flushPassiveEffects(); + case RootErrored: + { + // This render errored. Ignore any recoverable errors because we weren't actually + // able to recover. Instead, whatever the final errors were is the ones we log. + // This ensures that we only log the actual client side error if it's just a plain + // error thrown from a component on the server and the client. + workInProgressRootRecoverableErrors = null; + break; + } - if (didFlushPassiveEffects) { - // If passive effects were flushed, exit to the outer work loop in the root - // scheduler, so we can recompute the priority. - // TODO: We don't actually need this `ensureRootIsScheduled` call because - // this path is only reachable if the root is already part of the schedule. - // I'm including it only for consistency with the other exit points from - // this function. Can address in a subsequent refactor. - ensureRootIsScheduled(root); - return null; + case RootSuspended: + case RootCompleted: + { + break; } + default: { - syncNestedUpdateFlag(); + throw new Error('Unknown root exit status.'); } + } + + if (shouldForceFlushFallbacksInDEV()) { + // We're inside an `act` scope. Commit immediately. + commitRoot(root, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, workInProgressDeferredLane); + } else { + if (includesOnlyRetries(lanes) && (alwaysThrottleRetries || exitStatus === RootSuspended)) { + // This render only included retries, no updates. Throttle committing + // retries so that we don't show too many loading states too quickly. + var msUntilTimeout = globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now$1(); // Don't bother with a very short suspense time. - var exitStatus = renderRootSync(root, lanes); + if (msUntilTimeout > 10) { + markRootSuspended(root, lanes, workInProgressDeferredLane); + var nextLanes = getNextLanes(root, NoLanes); - if (root.tag !== LegacyRoot && exitStatus === RootErrored) { - // If something threw an error, try rendering one more time. We'll render - // synchronously to block concurrent data mutations, and we'll includes - // all pending updates are included. If it still fails after the second - // attempt, we'll give up and commit the resulting tree. - var originallyAttemptedLanes = lanes; - var errorRetryLanes = getLanesToRetrySynchronouslyOnError( - root, - originallyAttemptedLanes - ); + if (nextLanes !== NoLanes) { + // There's additional work we can do on this root. We might as well + // attempt to work on that while we're suspended. + return; + } // The render is suspended, it hasn't timed out, and there's no + // lower priority work to do. Instead of committing the fallback + // immediately, wait for more data to arrive. + // TODO: Combine retry throttling with Suspensey commits. Right now they + // run one after the other. - if (errorRetryLanes !== NoLanes) { - lanes = errorRetryLanes; - exitStatus = recoverFromConcurrentError( - root, - originallyAttemptedLanes, - errorRetryLanes - ); - } - } - if (exitStatus === RootFatalErrored) { - prepareFreshStack(root, NoLanes); - markRootSuspended(root, lanes, NoLane); - ensureRootIsScheduled(root); - return null; + root.timeoutHandle = scheduleTimeout(commitRootWhenReady.bind(null, root, finishedWork, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, lanes, workInProgressDeferredLane), msUntilTimeout); + return; } - - if (exitStatus === RootDidNotComplete) { - // The render unwound without completing the tree. This happens in special - // cases where need to exit the current render without producing a - // consistent tree or committing. - markRootSuspended(root, lanes, workInProgressDeferredLane); - ensureRootIsScheduled(root); - return null; - } // We now have a consistent tree. Because this is a sync render, we - // will commit it even if something suspended. - - var finishedWork = root.current.alternate; - root.finishedWork = finishedWork; - root.finishedLanes = lanes; - commitRoot( - root, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - workInProgressDeferredLane - ); // Before exiting, make sure there's a callback scheduled for the next - // pending level. - - ensureRootIsScheduled(root); - return null; } - function getExecutionContext() { - return executionContext; + + commitRootWhenReady(root, finishedWork, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, lanes, workInProgressDeferredLane); + } +} + +function commitRootWhenReady(root, finishedWork, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, lanes, spawnedLane) { + // TODO: Combine retry throttling with Suspensey commits. Right now they run + // one after the other. + if (includesOnlyNonUrgentLanes(lanes)) { + // the suspensey resources. The renderer is responsible for accumulating + // all the load events. This all happens in a single synchronous + // transaction, so it track state in its own module scope. + + accumulateSuspenseyCommit(finishedWork); // At the end, ask the renderer if it's ready to commit, or if we should + // suspend. If it's not ready, it will return a callback to subscribe to + // a ready event. + + var schedulePendingCommit = waitForCommitToBeReady(); + + if (schedulePendingCommit !== null) { + // NOTE: waitForCommitToBeReady returns a subscribe function so that we + // only allocate a function if the commit isn't ready yet. The other + // pattern would be to always pass a callback to waitForCommitToBeReady. + // Not yet ready to commit. Delay the commit until the renderer notifies + // us that it's ready. This will be canceled if we start work on the + // root again. + root.cancelPendingCommit = schedulePendingCommit(commitRoot.bind(null, root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate)); + markRootSuspended(root, lanes, spawnedLane); + return; } - function batchedUpdates(fn, a) { - { - var prevExecutionContext = executionContext; - executionContext |= BatchedContext; + } // Otherwise, commit immediately. - try { - return fn(a); - } finally { - executionContext = prevExecutionContext; // If there were legacy sync updates, flush them at the end of the outer - // most batchedUpdates-like method. - - if ( - executionContext === NoContext && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. - !ReactSharedInternals.isBatchingLegacy - ) { - resetRenderTimer(); - flushSyncWorkOnLegacyRootsOnly(); + + commitRoot(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, spawnedLane); +} + +function isRenderConsistentWithExternalStores(finishedWork) { + // Search the rendered tree for external store reads, and check whether the + // stores were mutated in a concurrent event. Intentionally using an iterative + // loop instead of recursion so we can exit early. + var node = finishedWork; + + while (true) { + if (node.flags & StoreConsistency) { + var updateQueue = node.updateQueue; + + if (updateQueue !== null) { + var checks = updateQueue.stores; + + if (checks !== null) { + for (var i = 0; i < checks.length; i++) { + var check = checks[i]; + var getSnapshot = check.getSnapshot; + var renderedValue = check.value; + + try { + if (!objectIs(getSnapshot(), renderedValue)) { + // Found an inconsistent store. + return false; + } + } catch (error) { + // If `getSnapshot` throws, return `false`. This will schedule + // a re-render, and the error will be rethrown during render. + return false; + } } } } } - // Returns whether the the call was during a render or not - function flushSyncWork() { - if ((executionContext & (RenderContext | CommitContext)) === NoContext) { - flushSyncWorkOnAllRoots(); - return false; - } + var child = node.child; - return true; + if (node.subtreeFlags & StoreConsistency && child !== null) { + child.return = node; + node = child; + continue; } - // hidden subtree. The stack logic is managed there because that's the only - // place that ever modifies it. Which module it lives in doesn't matter for - // performance because this function will get inlined regardless - function setEntangledRenderLanes(newEntangledRenderLanes) { - entangledRenderLanes = newEntangledRenderLanes; - } - function getEntangledRenderLanes() { - return entangledRenderLanes; + if (node === finishedWork) { + return true; } - function resetWorkInProgressStack() { - if (workInProgress === null) return; - var interruptedWork; - - if (workInProgressSuspendedReason === NotSuspended) { - // Normal case. Work-in-progress hasn't started yet. Unwind all - // its parents. - interruptedWork = workInProgress.return; - } else { - // Work-in-progress is in suspended state. Reset the work loop and unwind - // both the suspended fiber and all its parents. - resetSuspendedWorkLoopOnUnwind(workInProgress); - interruptedWork = workInProgress; - } - - while (interruptedWork !== null) { - var current = interruptedWork.alternate; - unwindInterruptedWork(current, interruptedWork); - interruptedWork = interruptedWork.return; + while (node.sibling === null) { + if (node.return === null || node.return === finishedWork) { + return true; } - workInProgress = null; + node = node.return; } - function prepareFreshStack(root, lanes) { - root.finishedWork = null; - root.finishedLanes = NoLanes; - var timeoutHandle = root.timeoutHandle; + node.sibling.return = node.return; + node = node.sibling; + } // Flow doesn't know this is unreachable, but eslint does + // eslint-disable-next-line no-unreachable - if (timeoutHandle !== noTimeout) { - // The root previous suspended and scheduled a timeout to commit a fallback - // state. Now that we have additional work, cancel the timeout. - root.timeoutHandle = noTimeout; // $FlowFixMe[incompatible-call] Complains noTimeout is not a TimeoutID, despite the check above - cancelTimeout(timeoutHandle); - } + return true; +} // The extra indirections around markRootUpdated and markRootSuspended is +// needed to avoid a circular dependency between this module and +// ReactFiberLane. There's probably a better way to split up these modules and +// avoid this problem. Perhaps all the root-marking functions should move into +// the work loop. - var cancelPendingCommit = root.cancelPendingCommit; - if (cancelPendingCommit !== null) { - root.cancelPendingCommit = null; - cancelPendingCommit(); - } +function markRootUpdated(root, updatedLanes) { + markRootUpdated$1(root, updatedLanes); - resetWorkInProgressStack(); - workInProgressRoot = root; - var rootWorkInProgress = createWorkInProgress(root.current, null); - workInProgress = rootWorkInProgress; - workInProgressRootRenderLanes = lanes; - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - workInProgressRootDidAttachPingListener = false; - workInProgressRootExitStatus = RootInProgress; - workInProgressRootSkippedLanes = NoLanes; - workInProgressRootInterleavedUpdatedLanes = NoLanes; - workInProgressRootPingedLanes = NoLanes; - workInProgressDeferredLane = NoLane; - workInProgressRootConcurrentErrors = null; - workInProgressRootRecoverableErrors = null; - workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Get the lanes that are entangled with whatever we're about to render. We - // track these separately so we can distinguish the priority of the render - // task from the priority of the lanes it is entangled with. For example, a - // transition may not be allowed to finish unless it includes the Sync lane, - // which is currently suspended. We should be able to render the Transition - // and Sync lane in the same batch, but at Transition priority, because the - // Sync lane already suspended. + if (enableInfiniteRenderLoopDetection) { + // Check for recursive updates + if (executionContext & RenderContext) { + workInProgressRootDidIncludeRecursiveRenderUpdate = true; + } else if (executionContext & CommitContext) { + didIncludeCommitPhaseUpdate = true; + } - entangledRenderLanes = getEntangledLanes(root, lanes); - finishQueueingConcurrentUpdates(); + throwIfInfiniteUpdateLoopDetected(); + } +} - { - ReactStrictModeWarnings.discardPendingWarnings(); - } +function markRootPinged(root, pingedLanes) { + markRootPinged$1(root, pingedLanes); - return rootWorkInProgress; + if (enableInfiniteRenderLoopDetection) { + // Check for recursive pings. Pings are conceptually different from updates in + // other contexts but we call it an "update" in this context because + // repeatedly pinging a suspended render can cause a recursive render loop. + // The relevant property is that it can result in a new render attempt + // being scheduled. + if (executionContext & RenderContext) { + workInProgressRootDidIncludeRecursiveRenderUpdate = true; + } else if (executionContext & CommitContext) { + didIncludeCommitPhaseUpdate = true; } - function resetSuspendedWorkLoopOnUnwind(fiber) { - // Reset module-level state that was set during the render phase. - resetContextDependencies(); - resetHooksOnUnwind(fiber); - resetChildReconcilerOnUnwind(); + throwIfInfiniteUpdateLoopDetected(); + } +} + +function markRootSuspended(root, suspendedLanes, spawnedLane) { + // When suspending, we should always exclude lanes that were pinged or (more + // rarely, since we try to avoid it) updated during the render phase. + suspendedLanes = removeLanes(suspendedLanes, workInProgressRootPingedLanes); + suspendedLanes = removeLanes(suspendedLanes, workInProgressRootInterleavedUpdatedLanes); + + markRootSuspended$1(root, suspendedLanes, spawnedLane); +} // This is the entry point for synchronous tasks that don't go +// through Scheduler + + +function performSyncWorkOnRoot(root, lanes) { + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } + + var didFlushPassiveEffects = flushPassiveEffects(); + + if (didFlushPassiveEffects) { + // If passive effects were flushed, exit to the outer work loop in the root + // scheduler, so we can recompute the priority. + // TODO: We don't actually need this `ensureRootIsScheduled` call because + // this path is only reachable if the root is already part of the schedule. + // I'm including it only for consistency with the other exit points from + // this function. Can address in a subsequent refactor. + ensureRootIsScheduled(root); + return null; + } + + { + syncNestedUpdateFlag(); + } + + var exitStatus = renderRootSync(root, lanes); + + if ((root.tag !== LegacyRoot) && exitStatus === RootErrored) { + // If something threw an error, try rendering one more time. We'll render + // synchronously to block concurrent data mutations, and we'll includes + // all pending updates are included. If it still fails after the second + // attempt, we'll give up and commit the resulting tree. + var originallyAttemptedLanes = lanes; + var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root, originallyAttemptedLanes); + + if (errorRetryLanes !== NoLanes) { + lanes = errorRetryLanes; + exitStatus = recoverFromConcurrentError(root, originallyAttemptedLanes, errorRetryLanes); + } + } + + if (exitStatus === RootFatalErrored) { + prepareFreshStack(root, NoLanes); + markRootSuspended(root, lanes, NoLane); + ensureRootIsScheduled(root); + return null; + } + + if (exitStatus === RootDidNotComplete) { + // The render unwound without completing the tree. This happens in special + // cases where need to exit the current render without producing a + // consistent tree or committing. + markRootSuspended(root, lanes, workInProgressDeferredLane); + ensureRootIsScheduled(root); + return null; + } // We now have a consistent tree. Because this is a sync render, we + // will commit it even if something suspended. + + + var finishedWork = root.current.alternate; + root.finishedWork = finishedWork; + root.finishedLanes = lanes; + commitRoot(root, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, workInProgressDeferredLane); // Before exiting, make sure there's a callback scheduled for the next + // pending level. + + ensureRootIsScheduled(root); + return null; +} +function getExecutionContext() { + return executionContext; +} +function batchedUpdates(fn, a) { + { + var prevExecutionContext = executionContext; + executionContext |= BatchedContext; + + try { + return fn(a); + } finally { + executionContext = prevExecutionContext; // If there were legacy sync updates, flush them at the end of the outer + // most batchedUpdates-like method. + + if (executionContext === NoContext && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. + !(ReactSharedInternals.isBatchingLegacy)) { + resetRenderTimer(); + flushSyncWorkOnLegacyRootsOnly(); + } } + } +} +// Returns whether the the call was during a render or not - function handleThrow(root, thrownValue) { - // A component threw an exception. Usually this is because it suspended, but - // it also includes regular program errors. - // - // We're either going to unwind the stack to show a Suspense or error - // boundary, or we're going to replay the component again. Like after a - // promise resolves. - // - // Until we decide whether we're going to unwind or replay, we should preserve - // the current state of the work loop without resetting anything. - // - // If we do decide to unwind the stack, module-level variables will be reset - // in resetSuspendedWorkLoopOnUnwind. - // These should be reset immediately because they're only supposed to be set - // when React is executing user code. - resetHooksAfterThrow(); - resetCurrentFiber(); +function flushSyncWork() { + if ((executionContext & (RenderContext | CommitContext)) === NoContext) { + flushSyncWorkOnAllRoots(); + return false; + } - { - ReactSharedInternals.owner = null; - } - - if (thrownValue === SuspenseException) { - // This is a special type of exception used for Suspense. For historical - // reasons, the rest of the Suspense implementation expects the thrown value - // to be a thenable, because before `use` existed that was the (unstable) - // API for suspending. This implementation detail can change later, once we - // deprecate the old API in favor of `use`. - thrownValue = getSuspendedThenable(); - workInProgressSuspendedReason = - shouldRemainOnPreviousScreen() && // Check if there are other pending updates that might possibly unblock this - // component from suspending. This mirrors the check in - // renderDidSuspendDelayIfPossible. We should attempt to unify them somehow. - // TODO: Consider unwinding immediately, using the - // SuspendedOnHydration mechanism. - !includesNonIdleWork(workInProgressRootSkippedLanes) && - !includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes) // Suspend work loop until data resolves - ? SuspendedOnData // Don't suspend work loop, except to check if the data has - : // immediately resolved (i.e. in a microtask). Otherwise, trigger the - // nearest Suspense fallback. - SuspendedOnImmediate; - } else if (thrownValue === SuspenseyCommitException) { - thrownValue = getSuspendedThenable(); - workInProgressSuspendedReason = SuspendedOnInstance; - } else if (thrownValue === SelectiveHydrationException) { - // An update flowed into a dehydrated boundary. Before we can apply the - // update, we need to finish hydrating. Interrupt the work-in-progress - // render so we can restart at the hydration lane. - // - // The ideal implementation would be able to switch contexts without - // unwinding the current stack. - // - // We could name this something more general but as of now it's the only - // case where we think this should happen. - workInProgressSuspendedReason = SuspendedOnHydration; - } else { - // This is a regular error. - var isWakeable = - thrownValue !== null && - typeof thrownValue === "object" && - typeof thrownValue.then === "function"; - workInProgressSuspendedReason = isWakeable // A wakeable object was thrown by a legacy Suspense implementation. - ? // This has slightly different behavior than suspending with `use`. - SuspendedOnDeprecatedThrowPromise // This is a regular error. If something earlier in the component already - : // suspended, we must clear the thenable state to unblock the work loop. - SuspendedOnError; - } - - workInProgressThrownValue = thrownValue; - var erroredWork = workInProgress; - - if (erroredWork === null) { - // This is a fatal error - workInProgressRootExitStatus = RootFatalErrored; - logUncaughtError( - root, - createCapturedValueAtFiber(thrownValue, root.current) - ); - return; - } + return true; +} +// hidden subtree. The stack logic is managed there because that's the only +// place that ever modifies it. Which module it lives in doesn't matter for +// performance because this function will get inlined regardless - if (erroredWork.mode & ProfileMode) { - // Record the time spent rendering before an error was thrown. This - // avoids inaccurate Profiler durations in the case of a - // suspended render. - stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true); - } +function setEntangledRenderLanes(newEntangledRenderLanes) { + entangledRenderLanes = newEntangledRenderLanes; +} +function getEntangledRenderLanes() { + return entangledRenderLanes; +} - { - markComponentRenderStopped(); +function resetWorkInProgressStack() { + if (workInProgress === null) return; + var interruptedWork; + + if (workInProgressSuspendedReason === NotSuspended) { + // Normal case. Work-in-progress hasn't started yet. Unwind all + // its parents. + interruptedWork = workInProgress.return; + } else { + // Work-in-progress is in suspended state. Reset the work loop and unwind + // both the suspended fiber and all its parents. + resetSuspendedWorkLoopOnUnwind(workInProgress); + interruptedWork = workInProgress; + } + + while (interruptedWork !== null) { + var current = interruptedWork.alternate; + unwindInterruptedWork(current, interruptedWork); + interruptedWork = interruptedWork.return; + } + + workInProgress = null; +} - switch (workInProgressSuspendedReason) { - case SuspendedOnError: { - markComponentErrored( - erroredWork, - thrownValue, - workInProgressRootRenderLanes - ); - break; - } +function prepareFreshStack(root, lanes) { + root.finishedWork = null; + root.finishedLanes = NoLanes; + var timeoutHandle = root.timeoutHandle; + + if (timeoutHandle !== noTimeout) { + // The root previous suspended and scheduled a timeout to commit a fallback + // state. Now that we have additional work, cancel the timeout. + root.timeoutHandle = noTimeout; // $FlowFixMe[incompatible-call] Complains noTimeout is not a TimeoutID, despite the check above + + cancelTimeout(timeoutHandle); + } + + var cancelPendingCommit = root.cancelPendingCommit; + + if (cancelPendingCommit !== null) { + root.cancelPendingCommit = null; + cancelPendingCommit(); + } + + resetWorkInProgressStack(); + workInProgressRoot = root; + var rootWorkInProgress = createWorkInProgress(root.current, null); + workInProgress = rootWorkInProgress; + workInProgressRootRenderLanes = lanes; + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + workInProgressRootDidAttachPingListener = false; + workInProgressRootExitStatus = RootInProgress; + workInProgressRootSkippedLanes = NoLanes; + workInProgressRootInterleavedUpdatedLanes = NoLanes; + workInProgressRootPingedLanes = NoLanes; + workInProgressDeferredLane = NoLane; + workInProgressRootConcurrentErrors = null; + workInProgressRootRecoverableErrors = null; + workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Get the lanes that are entangled with whatever we're about to render. We + // track these separately so we can distinguish the priority of the render + // task from the priority of the lanes it is entangled with. For example, a + // transition may not be allowed to finish unless it includes the Sync lane, + // which is currently suspended. We should be able to render the Transition + // and Sync lane in the same batch, but at Transition priority, because the + // Sync lane already suspended. + + entangledRenderLanes = getEntangledLanes(root, lanes); + finishQueueingConcurrentUpdates(); + + { + ReactStrictModeWarnings.discardPendingWarnings(); + } + + return rootWorkInProgress; +} - case SuspendedOnData: - case SuspendedOnImmediate: - case SuspendedOnDeprecatedThrowPromise: - case SuspendedAndReadyToContinue: { - var wakeable = thrownValue; - markComponentSuspended( - erroredWork, - wakeable, - workInProgressRootRenderLanes - ); - break; - } +function resetSuspendedWorkLoopOnUnwind(fiber) { + // Reset module-level state that was set during the render phase. + resetContextDependencies(); + resetHooksOnUnwind(fiber); + resetChildReconcilerOnUnwind(); +} + +function handleThrow(root, thrownValue) { + // A component threw an exception. Usually this is because it suspended, but + // it also includes regular program errors. + // + // We're either going to unwind the stack to show a Suspense or error + // boundary, or we're going to replay the component again. Like after a + // promise resolves. + // + // Until we decide whether we're going to unwind or replay, we should preserve + // the current state of the work loop without resetting anything. + // + // If we do decide to unwind the stack, module-level variables will be reset + // in resetSuspendedWorkLoopOnUnwind. + // These should be reset immediately because they're only supposed to be set + // when React is executing user code. + resetHooksAfterThrow(); + resetCurrentFiber(); + + { + ReactSharedInternals.owner = null; + } + + if (thrownValue === SuspenseException) { + // This is a special type of exception used for Suspense. For historical + // reasons, the rest of the Suspense implementation expects the thrown value + // to be a thenable, because before `use` existed that was the (unstable) + // API for suspending. This implementation detail can change later, once we + // deprecate the old API in favor of `use`. + thrownValue = getSuspendedThenable(); + workInProgressSuspendedReason = shouldRemainOnPreviousScreen() && // Check if there are other pending updates that might possibly unblock this + // component from suspending. This mirrors the check in + // renderDidSuspendDelayIfPossible. We should attempt to unify them somehow. + // TODO: Consider unwinding immediately, using the + // SuspendedOnHydration mechanism. + !includesNonIdleWork(workInProgressRootSkippedLanes) && !includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes) ? // Suspend work loop until data resolves + SuspendedOnData : // Don't suspend work loop, except to check if the data has + // immediately resolved (i.e. in a microtask). Otherwise, trigger the + // nearest Suspense fallback. + SuspendedOnImmediate; + } else if (thrownValue === SuspenseyCommitException) { + thrownValue = getSuspendedThenable(); + workInProgressSuspendedReason = SuspendedOnInstance; + } else if (thrownValue === SelectiveHydrationException) { + // An update flowed into a dehydrated boundary. Before we can apply the + // update, we need to finish hydrating. Interrupt the work-in-progress + // render so we can restart at the hydration lane. + // + // The ideal implementation would be able to switch contexts without + // unwinding the current stack. + // + // We could name this something more general but as of now it's the only + // case where we think this should happen. + workInProgressSuspendedReason = SuspendedOnHydration; + } else { + // This is a regular error. + var isWakeable = thrownValue !== null && typeof thrownValue === 'object' && typeof thrownValue.then === 'function'; + workInProgressSuspendedReason = isWakeable ? // A wakeable object was thrown by a legacy Suspense implementation. + // This has slightly different behavior than suspending with `use`. + SuspendedOnDeprecatedThrowPromise : // This is a regular error. If something earlier in the component already + // suspended, we must clear the thenable state to unblock the work loop. + SuspendedOnError; + } + + workInProgressThrownValue = thrownValue; + var erroredWork = workInProgress; + + if (erroredWork === null) { + // This is a fatal error + workInProgressRootExitStatus = RootFatalErrored; + logUncaughtError(root, createCapturedValueAtFiber(thrownValue, root.current)); + return; + } + + if (erroredWork.mode & ProfileMode) { + // Record the time spent rendering before an error was thrown. This + // avoids inaccurate Profiler durations in the case of a + // suspended render. + stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true); + } + + { + markComponentRenderStopped(); + + switch (workInProgressSuspendedReason) { + case SuspendedOnError: + { + markComponentErrored(erroredWork, thrownValue, workInProgressRootRenderLanes); + break; } - } + + case SuspendedOnData: + case SuspendedOnImmediate: + case SuspendedOnDeprecatedThrowPromise: + case SuspendedAndReadyToContinue: + { + var wakeable = thrownValue; + markComponentSuspended(erroredWork, wakeable, workInProgressRootRenderLanes); + break; + } + } + } +} + +function shouldRemainOnPreviousScreen() { + // This is asking whether it's better to suspend the transition and remain + // on the previous screen, versus showing a fallback as soon as possible. It + // takes into account both the priority of render and also whether showing a + // fallback would produce a desirable user experience. + var handler = getSuspenseHandler(); + + if (handler === null) { + // There's no Suspense boundary that can provide a fallback. We have no + // choice but to remain on the previous screen. + // NOTE: We do this even for sync updates, for lack of any better option. In + // the future, we may change how we handle this, like by putting the whole + // root into a "detached" mode. + return true; + } // TODO: Once `use` has fully replaced the `throw promise` pattern, we should + // be able to remove the equivalent check in finishConcurrentRender, and rely + // just on this one. + + + if (includesOnlyTransitions(workInProgressRootRenderLanes)) { + if (getShellBoundary() === null) { + // We're rendering inside the "shell" of the app. Activating the nearest + // fallback would cause visible content to disappear. It's better to + // suspend the transition and remain on the previous screen. + return true; + } else { + // We're rendering content that wasn't part of the previous screen. + // Rather than block the transition, it's better to show a fallback as + // soon as possible. The appearance of any nested fallbacks will be + // throttled to avoid jank. + return false; } + } - function shouldRemainOnPreviousScreen() { - // This is asking whether it's better to suspend the transition and remain - // on the previous screen, versus showing a fallback as soon as possible. It - // takes into account both the priority of render and also whether showing a - // fallback would produce a desirable user experience. - var handler = getSuspenseHandler(); + if (includesOnlyRetries(workInProgressRootRenderLanes) || // In this context, an OffscreenLane counts as a Retry + // TODO: It's become increasingly clear that Retries and Offscreen are + // deeply connected. They probably can be unified further. + includesSomeLane(workInProgressRootRenderLanes, OffscreenLane)) { + // During a retry, we can suspend rendering if the nearest Suspense boundary + // is the boundary of the "shell", because we're guaranteed not to block + // any new content from appearing. + // + // The reason we must check if this is a retry is because it guarantees + // that suspending the work loop won't block an actual update, because + // retries don't "update" anything; they fill in fallbacks that were left + // behind by a previous transition. + return handler === getShellBoundary(); + } // For all other Lanes besides Transitions and Retries, we should not wait + // for the data to load. - if (handler === null) { - // There's no Suspense boundary that can provide a fallback. We have no - // choice but to remain on the previous screen. - // NOTE: We do this even for sync updates, for lack of any better option. In - // the future, we may change how we handle this, like by putting the whole - // root into a "detached" mode. - return true; - } // TODO: Once `use` has fully replaced the `throw promise` pattern, we should - // be able to remove the equivalent check in finishConcurrentRender, and rely - // just on this one. - - if (includesOnlyTransitions(workInProgressRootRenderLanes)) { - if (getShellBoundary() === null) { - // We're rendering inside the "shell" of the app. Activating the nearest - // fallback would cause visible content to disappear. It's better to - // suspend the transition and remain on the previous screen. - return true; - } else { - // We're rendering content that wasn't part of the previous screen. - // Rather than block the transition, it's better to show a fallback as - // soon as possible. The appearance of any nested fallbacks will be - // throttled to avoid jank. - return false; - } - } - if ( - includesOnlyRetries(workInProgressRootRenderLanes) || // In this context, an OffscreenLane counts as a Retry - // TODO: It's become increasingly clear that Retries and Offscreen are - // deeply connected. They probably can be unified further. - includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) - ) { - // During a retry, we can suspend rendering if the nearest Suspense boundary - // is the boundary of the "shell", because we're guaranteed not to block - // any new content from appearing. - // - // The reason we must check if this is a retry is because it guarantees - // that suspending the work loop won't block an actual update, because - // retries don't "update" anything; they fill in fallbacks that were left - // behind by a previous transition. - return handler === getShellBoundary(); - } // For all other Lanes besides Transitions and Retries, we should not wait - // for the data to load. + return false; +} + +function pushDispatcher(container) { + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = ContextOnlyDispatcher; + + if (prevDispatcher === null) { + // The React isomorphic package does not include a default dispatcher. + // Instead the first renderer will lazily attach one, in order to give + // nicer error messages. + return ContextOnlyDispatcher; + } else { + return prevDispatcher; + } +} + +function popDispatcher(prevDispatcher) { + ReactSharedInternals.H = prevDispatcher; +} + +function pushCacheDispatcher() { + { + var prevCacheDispatcher = ReactSharedInternals.C; + ReactSharedInternals.C = DefaultCacheDispatcher; + return prevCacheDispatcher; + } +} + +function popCacheDispatcher(prevCacheDispatcher) { + { + ReactSharedInternals.C = prevCacheDispatcher; + } +} + +function markCommitTimeOfFallback() { + globalMostRecentFallbackTime = now$1(); +} +function markSkippedUpdateLanes(lane) { + workInProgressRootSkippedLanes = mergeLanes(lane, workInProgressRootSkippedLanes); +} +function renderDidSuspend() { + if (workInProgressRootExitStatus === RootInProgress) { + workInProgressRootExitStatus = RootSuspended; + } +} +function renderDidSuspendDelayIfPossible() { + workInProgressRootExitStatus = RootSuspendedWithDelay; // Check if there are updates that we skipped tree that might have unblocked + // this render. + + if ((includesNonIdleWork(workInProgressRootSkippedLanes) || includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes)) && workInProgressRoot !== null) { + // Mark the current render as suspended so that we switch to working on + // the updates that were skipped. Usually we only suspend at the end of + // the render phase. + // TODO: We should probably always mark the root as suspended immediately + // (inside this function), since by suspending at the end of the render + // phase introduces a potential mistake where we suspend lanes that were + // pinged or updated while we were rendering. + // TODO: Consider unwinding immediately, using the + // SuspendedOnHydration mechanism. + markRootSuspended(workInProgressRoot, workInProgressRootRenderLanes, workInProgressDeferredLane); + } +} +function renderDidError() { + if (workInProgressRootExitStatus !== RootSuspendedWithDelay) { + workInProgressRootExitStatus = RootErrored; + } +} +function queueConcurrentError(error) { + if (workInProgressRootConcurrentErrors === null) { + workInProgressRootConcurrentErrors = [error]; + } else { + workInProgressRootConcurrentErrors.push(error); + } +} // Called during render to determine if anything has suspended. +// Returns false if we're not sure. + +function renderHasNotSuspendedYet() { + // If something errored or completed, we can't really be sure, + // so those are false. + return workInProgressRootExitStatus === RootInProgress; +} // TODO: Over time, this function and renderRootConcurrent have become more +// and more similar. Not sure it makes sense to maintain forked paths. Consider +// unifying them again. + +function renderRootSync(root, lanes) { + var prevExecutionContext = executionContext; + executionContext |= RenderContext; + var prevDispatcher = pushDispatcher(); + var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack + // and prepare a fresh one. Otherwise we'll continue where we left off. + + if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { + { + if (isDevToolsPresent) { + var memoizedUpdaters = root.memoizedUpdaters; - return false; - } + if (memoizedUpdaters.size > 0) { + restorePendingUpdaters(root, workInProgressRootRenderLanes); + memoizedUpdaters.clear(); + } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. + // If we bailout on this work, we'll move them back (like above). + // It's important to move them now in case the work spawns more work at the same priority with different updaters. + // That way we can keep the current update and future updates separate. - function pushDispatcher(container) { - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = ContextOnlyDispatcher; - if (prevDispatcher === null) { - // The React isomorphic package does not include a default dispatcher. - // Instead the first renderer will lazily attach one, in order to give - // nicer error messages. - return ContextOnlyDispatcher; - } else { - return prevDispatcher; + movePendingFibersToMemoized(root, lanes); } } - function popDispatcher(prevDispatcher) { - ReactSharedInternals.H = prevDispatcher; - } + workInProgressTransitions = getTransitionsForLanes(); + prepareFreshStack(root, lanes); + } - function pushCacheDispatcher() { - { - var prevCacheDispatcher = ReactSharedInternals.C; - ReactSharedInternals.C = DefaultCacheDispatcher; - return prevCacheDispatcher; - } - } + { + markRenderStarted(lanes); + } - function popCacheDispatcher(prevCacheDispatcher) { - { - ReactSharedInternals.C = prevCacheDispatcher; - } - } + var didSuspendInShell = false; - function markCommitTimeOfFallback() { - globalMostRecentFallbackTime = now$1(); - } - function markSkippedUpdateLanes(lane) { - workInProgressRootSkippedLanes = mergeLanes( - lane, - workInProgressRootSkippedLanes - ); - } - function renderDidSuspend() { - if (workInProgressRootExitStatus === RootInProgress) { - workInProgressRootExitStatus = RootSuspended; - } - } - function renderDidSuspendDelayIfPossible() { - workInProgressRootExitStatus = RootSuspendedWithDelay; // Check if there are updates that we skipped tree that might have unblocked - // this render. + outer: do { + try { + if (workInProgressSuspendedReason !== NotSuspended && workInProgress !== null) { + // The work loop is suspended. During a synchronous render, we don't + // yield to the main thread. Immediately unwind the stack. This will + // trigger either a fallback or an error boundary. + // TODO: For discrete and "default" updates (anything that's not + // flushSync), we want to wait for the microtasks the flush before + // unwinding. Will probably implement this using renderRootConcurrent, + // or merge renderRootSync and renderRootConcurrent into the same + // function and fork the behavior some other way. + var unitOfWork = workInProgress; + var thrownValue = workInProgressThrownValue; - if ( - (includesNonIdleWork(workInProgressRootSkippedLanes) || - includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes)) && - workInProgressRoot !== null - ) { - // Mark the current render as suspended so that we switch to working on - // the updates that were skipped. Usually we only suspend at the end of - // the render phase. - // TODO: We should probably always mark the root as suspended immediately - // (inside this function), since by suspending at the end of the render - // phase introduces a potential mistake where we suspend lanes that were - // pinged or updated while we were rendering. - // TODO: Consider unwinding immediately, using the - // SuspendedOnHydration mechanism. - markRootSuspended( - workInProgressRoot, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } - } - function renderDidError() { - if (workInProgressRootExitStatus !== RootSuspendedWithDelay) { - workInProgressRootExitStatus = RootErrored; + switch (workInProgressSuspendedReason) { + case SuspendedOnHydration: + { + // Selective hydration. An update flowed into a dehydrated tree. + // Interrupt the current render so the work loop can switch to the + // hydration lane. + resetWorkInProgressStack(); + workInProgressRootExitStatus = RootDidNotComplete; + break outer; + } + + case SuspendedOnImmediate: + case SuspendedOnData: + { + if (!didSuspendInShell && getSuspenseHandler() === null) { + didSuspendInShell = true; + } // Intentional fallthrough + + } + + default: + { + // Unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } + } } + + workLoopSync(); + break; + } catch (thrownValue) { + handleThrow(root, thrownValue); } - function queueConcurrentError(error) { - if (workInProgressRootConcurrentErrors === null) { - workInProgressRootConcurrentErrors = [error]; - } else { - workInProgressRootConcurrentErrors.push(error); - } - } // Called during render to determine if anything has suspended. - // Returns false if we're not sure. - - function renderHasNotSuspendedYet() { - // If something errored or completed, we can't really be sure, - // so those are false. - return workInProgressRootExitStatus === RootInProgress; - } // TODO: Over time, this function and renderRootConcurrent have become more - // and more similar. Not sure it makes sense to maintain forked paths. Consider - // unifying them again. - - function renderRootSync(root, lanes) { - var prevExecutionContext = executionContext; - executionContext |= RenderContext; - var prevDispatcher = pushDispatcher(); - var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack - // and prepare a fresh one. Otherwise we'll continue where we left off. - - if ( - workInProgressRoot !== root || - workInProgressRootRenderLanes !== lanes - ) { - { - if (isDevToolsPresent) { - var memoizedUpdaters = root.memoizedUpdaters; - - if (memoizedUpdaters.size > 0) { - restorePendingUpdaters(root, workInProgressRootRenderLanes); - memoizedUpdaters.clear(); - } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. - // If we bailout on this work, we'll move them back (like above). - // It's important to move them now in case the work spawns more work at the same priority with different updaters. - // That way we can keep the current update and future updates separate. - - movePendingFibersToMemoized(root, lanes); - } - } + } while (true); // Check if something suspended in the shell. We use this to detect an + // infinite ping loop caused by an uncached promise. + // + // Only increment this counter once per synchronous render attempt across the + // whole tree. Even if there are many sibling components that suspend, this + // counter only gets incremented once. - workInProgressTransitions = getTransitionsForLanes(); - prepareFreshStack(root, lanes); - } - { - markRenderStarted(lanes); - } + if (didSuspendInShell) { + root.shellSuspendCounter++; + } - var didSuspendInShell = false; + resetContextDependencies(); + executionContext = prevExecutionContext; + popDispatcher(prevDispatcher); + popCacheDispatcher(prevCacheDispatcher); - outer: do { - try { - if ( - workInProgressSuspendedReason !== NotSuspended && - workInProgress !== null - ) { - // The work loop is suspended. During a synchronous render, we don't - // yield to the main thread. Immediately unwind the stack. This will - // trigger either a fallback or an error boundary. - // TODO: For discrete and "default" updates (anything that's not - // flushSync), we want to wait for the microtasks the flush before - // unwinding. Will probably implement this using renderRootConcurrent, - // or merge renderRootSync and renderRootConcurrent into the same - // function and fork the behavior some other way. - var unitOfWork = workInProgress; - var thrownValue = workInProgressThrownValue; - - switch (workInProgressSuspendedReason) { - case SuspendedOnHydration: { - // Selective hydration. An update flowed into a dehydrated tree. - // Interrupt the current render so the work loop can switch to the - // hydration lane. - resetWorkInProgressStack(); - workInProgressRootExitStatus = RootDidNotComplete; - break outer; - } + if (workInProgress !== null) { + // This is a sync render, so we should have finished the whole tree. + throw new Error('Cannot commit an incomplete root. This error is likely caused by a ' + 'bug in React. Please file an issue.'); + } - case SuspendedOnImmediate: - case SuspendedOnData: { - if (!didSuspendInShell && getSuspenseHandler() === null) { - didSuspendInShell = true; - } // Intentional fallthrough - } + { + markRenderStopped(); + } // Set this to null to indicate there's no in-progress render. - default: { - // Unwind then continue with the normal work loop. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } - } - } - workLoopSync(); - break; - } catch (thrownValue) { - handleThrow(root, thrownValue); - } - } while (true); // Check if something suspended in the shell. We use this to detect an - // infinite ping loop caused by an uncached promise. - // - // Only increment this counter once per synchronous render attempt across the - // whole tree. Even if there are many sibling components that suspend, this - // counter only gets incremented once. + workInProgressRoot = null; + workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. - if (didSuspendInShell) { - root.shellSuspendCounter++; - } + finishQueueingConcurrentUpdates(); + return workInProgressRootExitStatus; +} // The work loop is an extremely hot path. Tell Closure not to inline it. - resetContextDependencies(); - executionContext = prevExecutionContext; - popDispatcher(prevDispatcher); - popCacheDispatcher(prevCacheDispatcher); +/** @noinline */ - if (workInProgress !== null) { - // This is a sync render, so we should have finished the whole tree. - throw new Error( - "Cannot commit an incomplete root. This error is likely caused by a " + - "bug in React. Please file an issue." - ); - } - { - markRenderStopped(); - } // Set this to null to indicate there's no in-progress render. +function workLoopSync() { + // Perform work without checking if we need to yield between fiber. + while (workInProgress !== null) { + performUnitOfWork(workInProgress); + } +} - workInProgressRoot = null; - workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. +function renderRootConcurrent(root, lanes) { + var prevExecutionContext = executionContext; + executionContext |= RenderContext; + var prevDispatcher = pushDispatcher(); + var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack + // and prepare a fresh one. Otherwise we'll continue where we left off. + + if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { + { + if (isDevToolsPresent) { + var memoizedUpdaters = root.memoizedUpdaters; - finishQueueingConcurrentUpdates(); - return workInProgressRootExitStatus; - } // The work loop is an extremely hot path. Tell Closure not to inline it. + if (memoizedUpdaters.size > 0) { + restorePendingUpdaters(root, workInProgressRootRenderLanes); + memoizedUpdaters.clear(); + } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. + // If we bailout on this work, we'll move them back (like above). + // It's important to move them now in case the work spawns more work at the same priority with different updaters. + // That way we can keep the current update and future updates separate. - /** @noinline */ - function workLoopSync() { - // Perform work without checking if we need to yield between fiber. - while (workInProgress !== null) { - performUnitOfWork(workInProgress); + movePendingFibersToMemoized(root, lanes); } } - function renderRootConcurrent(root, lanes) { - var prevExecutionContext = executionContext; - executionContext |= RenderContext; - var prevDispatcher = pushDispatcher(); - var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack - // and prepare a fresh one. Otherwise we'll continue where we left off. + workInProgressTransitions = getTransitionsForLanes(); + resetRenderTimer(); + prepareFreshStack(root, lanes); + } - if ( - workInProgressRoot !== root || - workInProgressRootRenderLanes !== lanes - ) { - { - if (isDevToolsPresent) { - var memoizedUpdaters = root.memoizedUpdaters; - - if (memoizedUpdaters.size > 0) { - restorePendingUpdaters(root, workInProgressRootRenderLanes); - memoizedUpdaters.clear(); - } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. - // If we bailout on this work, we'll move them back (like above). - // It's important to move them now in case the work spawns more work at the same priority with different updaters. - // That way we can keep the current update and future updates separate. - - movePendingFibersToMemoized(root, lanes); - } - } + { + markRenderStarted(lanes); + } - workInProgressTransitions = getTransitionsForLanes(); - resetRenderTimer(); - prepareFreshStack(root, lanes); - } + outer: do { + try { + if (workInProgressSuspendedReason !== NotSuspended && workInProgress !== null) { + // The work loop is suspended. We need to either unwind the stack or + // replay the suspended component. + var unitOfWork = workInProgress; + var thrownValue = workInProgressThrownValue; - { - markRenderStarted(lanes); - } + resumeOrUnwind: switch (workInProgressSuspendedReason) { + case SuspendedOnError: + { + // Unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } - outer: do { - try { - if ( - workInProgressSuspendedReason !== NotSuspended && - workInProgress !== null - ) { - // The work loop is suspended. We need to either unwind the stack or - // replay the suspended component. - var unitOfWork = workInProgress; - var thrownValue = workInProgressThrownValue; - - resumeOrUnwind: switch (workInProgressSuspendedReason) { - case SuspendedOnError: { - // Unwind then continue with the normal work loop. + case SuspendedOnData: + { + var thenable = thrownValue; + + if (isThenableResolved(thenable)) { + // The data resolved. Try rendering the component again. workInProgressSuspendedReason = NotSuspended; workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + replaySuspendedUnitOfWork(unitOfWork); break; - } + } // The work loop is suspended on data. We should wait for it to + // resolve before continuing to render. + // TODO: Handle the case where the promise resolves synchronously. + // Usually this is handled when we instrument the promise to add a + // `status` field, but if the promise already has a status, we won't + // have added a listener until right here. - case SuspendedOnData: { - var thenable = thrownValue; - if (isThenableResolved(thenable)) { - // The data resolved. Try rendering the component again. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - replaySuspendedUnitOfWork(unitOfWork); - break; - } // The work loop is suspended on data. We should wait for it to - // resolve before continuing to render. - // TODO: Handle the case where the promise resolves synchronously. - // Usually this is handled when we instrument the promise to add a - // `status` field, but if the promise already has a status, we won't - // have added a listener until right here. - - var onResolution = function () { - // Check if the root is still suspended on this promise. - if ( - workInProgressSuspendedReason === SuspendedOnData && - workInProgressRoot === root - ) { - // Mark the root as ready to continue rendering. - workInProgressSuspendedReason = SuspendedAndReadyToContinue; - } // Ensure the root is scheduled. We should do this even if we're - // currently working on a different root, so that we resume - // rendering later. - - ensureRootIsScheduled(root); - }; - - thenable.then(onResolution, onResolution); - break outer; - } + var onResolution = function () { + // Check if the root is still suspended on this promise. + if (workInProgressSuspendedReason === SuspendedOnData && workInProgressRoot === root) { + // Mark the root as ready to continue rendering. + workInProgressSuspendedReason = SuspendedAndReadyToContinue; + } // Ensure the root is scheduled. We should do this even if we're + // currently working on a different root, so that we resume + // rendering later. - case SuspendedOnImmediate: { - // If this fiber just suspended, it's possible the data is already - // cached. Yield to the main thread to give it a chance to ping. If - // it does, we can retry immediately without unwinding the stack. - workInProgressSuspendedReason = SuspendedAndReadyToContinue; - break outer; - } - case SuspendedOnInstance: { - workInProgressSuspendedReason = - SuspendedOnInstanceAndReadyToContinue; - break outer; - } + ensureRootIsScheduled(root); + }; - case SuspendedAndReadyToContinue: { - var _thenable = thrownValue; + thenable.then(onResolution, onResolution); + break outer; + } - if (isThenableResolved(_thenable)) { - // The data resolved. Try rendering the component again. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - replaySuspendedUnitOfWork(unitOfWork); - } else { - // Otherwise, unwind then continue with the normal work loop. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - } + case SuspendedOnImmediate: + { + // If this fiber just suspended, it's possible the data is already + // cached. Yield to the main thread to give it a chance to ping. If + // it does, we can retry immediately without unwinding the stack. + workInProgressSuspendedReason = SuspendedAndReadyToContinue; + break outer; + } - break; + case SuspendedOnInstance: + { + workInProgressSuspendedReason = SuspendedOnInstanceAndReadyToContinue; + break outer; + } + + case SuspendedAndReadyToContinue: + { + var _thenable = thrownValue; + + if (isThenableResolved(_thenable)) { + // The data resolved. Try rendering the component again. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + replaySuspendedUnitOfWork(unitOfWork); + } else { + // Otherwise, unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); } - case SuspendedOnInstanceAndReadyToContinue: { - switch (workInProgress.tag) { - case HostComponent: - case HostHoistable: - case HostSingleton: { + break; + } + + case SuspendedOnInstanceAndReadyToContinue: + { + switch (workInProgress.tag) { + case HostComponent: + case HostHoistable: + case HostSingleton: + { // Before unwinding the stack, check one more time if the // instance is ready. It may have loaded when React yielded to // the main thread. @@ -27441,4144 +23526,3576 @@ to return true:wantsResponderID| | break; } - default: { + default: + { // This will fail gracefully but it's not correct, so log a // warning in dev. if (true) { - error( - "Unexpected type of fiber triggered a suspensey commit. " + - "This is a bug in React." - ); + error('Unexpected type of fiber triggered a suspensey commit. ' + 'This is a bug in React.'); } break; } - } // Otherwise, unwind then continue with the normal work loop. - - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } + } // Otherwise, unwind then continue with the normal work loop. - case SuspendedOnDeprecatedThrowPromise: { - // Suspended by an old implementation that uses the `throw promise` - // pattern. The newer replaying behavior can cause subtle issues - // like infinite ping loops. So we maintain the old behavior and - // always unwind. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } - case SuspendedOnHydration: { - // Selective hydration. An update flowed into a dehydrated tree. - // Interrupt the current render so the work loop can switch to the - // hydration lane. - resetWorkInProgressStack(); - workInProgressRootExitStatus = RootDidNotComplete; - break outer; - } + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } - default: { - throw new Error( - "Unexpected SuspendedReason. This is a bug in React." - ); - } + case SuspendedOnDeprecatedThrowPromise: + { + // Suspended by an old implementation that uses the `throw promise` + // pattern. The newer replaying behavior can cause subtle issues + // like infinite ping loops. So we maintain the old behavior and + // always unwind. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; } - } - if (true && ReactSharedInternals.actQueue !== null) { - // `act` special case: If we're inside an `act` scope, don't consult - // `shouldYield`. Always keep working until the render is complete. - // This is not just an optimization: in a unit test environment, we - // can't trust the result of `shouldYield`, because the host I/O is - // likely mocked. - workLoopSync(); - } else { - workLoopConcurrent(); - } + case SuspendedOnHydration: + { + // Selective hydration. An update flowed into a dehydrated tree. + // Interrupt the current render so the work loop can switch to the + // hydration lane. + resetWorkInProgressStack(); + workInProgressRootExitStatus = RootDidNotComplete; + break outer; + } - break; - } catch (thrownValue) { - handleThrow(root, thrownValue); + default: + { + throw new Error('Unexpected SuspendedReason. This is a bug in React.'); + } } - } while (true); + } + + if (true && ReactSharedInternals.actQueue !== null) { + // `act` special case: If we're inside an `act` scope, don't consult + // `shouldYield`. Always keep working until the render is complete. + // This is not just an optimization: in a unit test environment, we + // can't trust the result of `shouldYield`, because the host I/O is + // likely mocked. + workLoopSync(); + } else { + workLoopConcurrent(); + } + + break; + } catch (thrownValue) { + handleThrow(root, thrownValue); + } + } while (true); + + resetContextDependencies(); + popDispatcher(prevDispatcher); + popCacheDispatcher(prevCacheDispatcher); + executionContext = prevExecutionContext; + + + if (workInProgress !== null) { + // Still work remaining. + { + markRenderYielded(); + } - resetContextDependencies(); - popDispatcher(prevDispatcher); - popCacheDispatcher(prevCacheDispatcher); - executionContext = prevExecutionContext; + return RootInProgress; + } else { + // Completed the tree. + { + markRenderStopped(); + } // Set this to null to indicate there's no in-progress render. + + + workInProgressRoot = null; + workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. + + finishQueueingConcurrentUpdates(); // Return the final exit status. + + return workInProgressRootExitStatus; + } +} +/** @noinline */ + + +function workLoopConcurrent() { + // Perform work until Scheduler asks us to yield + while (workInProgress !== null && !shouldYield()) { + // $FlowFixMe[incompatible-call] found when upgrading Flow + performUnitOfWork(workInProgress); + } +} + +function performUnitOfWork(unitOfWork) { + // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. + var current = unitOfWork.alternate; + setCurrentFiber(unitOfWork); + var next; + + if ((unitOfWork.mode & ProfileMode) !== NoMode) { + startProfilerTimer(unitOfWork); + next = beginWork(current, unitOfWork, entangledRenderLanes); + stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); + } else { + next = beginWork(current, unitOfWork, entangledRenderLanes); + } + + resetCurrentFiber(); + unitOfWork.memoizedProps = unitOfWork.pendingProps; + + if (next === null) { + // If this doesn't spawn new work, complete the current work. + completeUnitOfWork(unitOfWork); + } else { + workInProgress = next; + } + + { + ReactSharedInternals.owner = null; + } +} + +function replaySuspendedUnitOfWork(unitOfWork) { + // This is a fork of performUnitOfWork specifcally for replaying a fiber that + // just suspended. + // + var current = unitOfWork.alternate; + setCurrentFiber(unitOfWork); + var next; + setCurrentFiber(unitOfWork); + var isProfilingMode = (unitOfWork.mode & ProfileMode) !== NoMode; + + if (isProfilingMode) { + startProfilerTimer(unitOfWork); + } + + switch (unitOfWork.tag) { + case SimpleMemoComponent: + case FunctionComponent: + { + // Resolve `defaultProps`. This logic is copied from `beginWork`. + // TODO: Consider moving this switch statement into that module. Also, + // could maybe use this as an opportunity to say `use` doesn't work with + // `defaultProps` :) + var Component = unitOfWork.type; + var unresolvedProps = unitOfWork.pendingProps; + var resolvedProps = disableDefaultPropsExceptForClasses || unitOfWork.elementType === Component ? unresolvedProps : resolveDefaultPropsOnNonClassComponent(Component, unresolvedProps); + var context; - if (workInProgress !== null) { - // Still work remaining. { - markRenderYielded(); + var unmaskedContext = getUnmaskedContext(unitOfWork, Component, true); + context = getMaskedContext(unitOfWork, unmaskedContext); } - return RootInProgress; - } else { - // Completed the tree. - { - markRenderStopped(); - } // Set this to null to indicate there's no in-progress render. + next = replayFunctionComponent(current, unitOfWork, resolvedProps, Component, context, workInProgressRootRenderLanes); + break; + } - workInProgressRoot = null; - workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. + case ForwardRef: + { + // Resolve `defaultProps`. This logic is copied from `beginWork`. + // TODO: Consider moving this switch statement into that module. Also, + // could maybe use this as an opportunity to say `use` doesn't work with + // `defaultProps` :) + var _Component = unitOfWork.type.render; + var _unresolvedProps = unitOfWork.pendingProps; - finishQueueingConcurrentUpdates(); // Return the final exit status. + var _resolvedProps = disableDefaultPropsExceptForClasses || unitOfWork.elementType === _Component ? _unresolvedProps : resolveDefaultPropsOnNonClassComponent(_Component, _unresolvedProps); - return workInProgressRootExitStatus; + next = replayFunctionComponent(current, unitOfWork, _resolvedProps, _Component, unitOfWork.ref, workInProgressRootRenderLanes); + break; } - } - /** @noinline */ - function workLoopConcurrent() { - // Perform work until Scheduler asks us to yield - while (workInProgress !== null && !shouldYield()) { - // $FlowFixMe[incompatible-call] found when upgrading Flow - performUnitOfWork(workInProgress); + case HostComponent: + { + // Some host components are stateful (that's how we implement form + // actions) but we don't bother to reuse the memoized state because it's + // not worth the extra code. The main reason to reuse the previous hooks + // is to reuse uncached promises, but we happen to know that the only + // promises that a host component might suspend on are definitely cached + // because they are controlled by us. So don't bother. + resetHooksOnUnwind(unitOfWork); // Fallthrough to the next branch. } - } - - function performUnitOfWork(unitOfWork) { - // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. - var current = unitOfWork.alternate; - setCurrentFiber(unitOfWork); - var next; - if ((unitOfWork.mode & ProfileMode) !== NoMode) { - startProfilerTimer(unitOfWork); - next = beginWork(current, unitOfWork, entangledRenderLanes); - stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); - } else { + default: + { + // Other types besides function components are reset completely before + // being replayed. Currently this only happens when a Usable type is + // reconciled — the reconciler will suspend. + // + // We reset the fiber back to its original state; however, this isn't + // a full "unwind" because we're going to reuse the promises that were + // reconciled previously. So it's intentional that we don't call + // resetSuspendedWorkLoopOnUnwind here. + unwindInterruptedWork(current, unitOfWork); + unitOfWork = workInProgress = resetWorkInProgress(unitOfWork, entangledRenderLanes); next = beginWork(current, unitOfWork, entangledRenderLanes); + break; } + } - resetCurrentFiber(); - unitOfWork.memoizedProps = unitOfWork.pendingProps; + if (isProfilingMode) { + stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); + } // The begin phase finished successfully without suspending. Return to the + // normal work loop. - if (next === null) { - // If this doesn't spawn new work, complete the current work. - completeUnitOfWork(unitOfWork); - } else { - workInProgress = next; - } - { - ReactSharedInternals.owner = null; + resetCurrentFiber(); + unitOfWork.memoizedProps = unitOfWork.pendingProps; + + if (next === null) { + // If this doesn't spawn new work, complete the current work. + completeUnitOfWork(unitOfWork); + } else { + workInProgress = next; + } + + { + ReactSharedInternals.owner = null; + } +} + +function throwAndUnwindWorkLoop(root, unitOfWork, thrownValue) { + // This is a fork of performUnitOfWork specifcally for unwinding a fiber + // that threw an exception. + // + // Return to the normal work loop. This will unwind the stack, and potentially + // result in showing a fallback. + resetSuspendedWorkLoopOnUnwind(unitOfWork); + var returnFiber = unitOfWork.return; + + try { + // Find and mark the nearest Suspense or error boundary that can handle + // this "exception". + var didFatal = throwException(root, returnFiber, unitOfWork, thrownValue, workInProgressRootRenderLanes); + + if (didFatal) { + panicOnRootError(root, thrownValue); + return; + } + } catch (error) { + // We had trouble processing the error. An example of this happening is + // when accessing the `componentDidCatch` property of an error boundary + // throws an error. A weird edge case. There's a regression test for this. + // To prevent an infinite loop, bubble the error up to the next parent. + if (returnFiber !== null) { + workInProgress = returnFiber; + throw error; + } else { + panicOnRootError(root, thrownValue); + return; + } + } + + if (unitOfWork.flags & Incomplete) { + // Unwind the stack until we reach the nearest boundary. + unwindUnitOfWork(unitOfWork); + } else { + // Although the fiber suspended, we're intentionally going to commit it in + // an inconsistent state. We can do this safely in cases where we know the + // inconsistent tree will be hidden. + // + // This currently only applies to Legacy Suspense implementation, but we may + // port a version of this to concurrent roots, too, when performing a + // synchronous render. Because that will allow us to mutate the tree as we + // go instead of buffering mutations until the end. Though it's unclear if + // this particular path is how that would be implemented. + completeUnitOfWork(unitOfWork); + } +} + +function panicOnRootError(root, error) { + // There's no ancestor that can handle this exception. This should never + // happen because the root is supposed to capture all errors that weren't + // caught by an error boundary. This is a fatal error, or panic condition, + // because we've run out of ways to recover. + workInProgressRootExitStatus = RootFatalErrored; + logUncaughtError(root, createCapturedValueAtFiber(error, root.current)); // Set `workInProgress` to null. This represents advancing to the next + // sibling, or the parent if there are no siblings. But since the root + // has no siblings nor a parent, we set it to null. Usually this is + // handled by `completeUnitOfWork` or `unwindWork`, but since we're + // intentionally not calling those, we need set it here. + // TODO: Consider calling `unwindWork` to pop the contexts. + + workInProgress = null; +} + +function completeUnitOfWork(unitOfWork) { + // Attempt to complete the current unit of work, then move to the next + // sibling. If there are no more siblings, return to the parent fiber. + var completedWork = unitOfWork; + + do { + { + if ((completedWork.flags & Incomplete) !== NoFlags$1) { + // NOTE: If we re-enable sibling prerendering in some cases, this branch + // is where we would switch to the unwinding path. + error('Internal React error: Expected this fiber to be complete, but ' + "it isn't. It should have been unwound. This is a bug in React."); } + } // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. + + + var current = completedWork.alternate; + var returnFiber = completedWork.return; + setCurrentFiber(completedWork); + var next = void 0; + + if ((completedWork.mode & ProfileMode) === NoMode) { + next = completeWork(current, completedWork, entangledRenderLanes); + } else { + startProfilerTimer(completedWork); + next = completeWork(current, completedWork, entangledRenderLanes); // Update render duration assuming we didn't error. + + stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); } - function replaySuspendedUnitOfWork(unitOfWork) { - // This is a fork of performUnitOfWork specifcally for replaying a fiber that - // just suspended. - // - var current = unitOfWork.alternate; - setCurrentFiber(unitOfWork); - var next; - setCurrentFiber(unitOfWork); - var isProfilingMode = (unitOfWork.mode & ProfileMode) !== NoMode; + resetCurrentFiber(); - if (isProfilingMode) { - startProfilerTimer(unitOfWork); - } + if (next !== null) { + // Completing this fiber spawned new work. Work on that next. + workInProgress = next; + return; + } - switch (unitOfWork.tag) { - case SimpleMemoComponent: - case FunctionComponent: { - // Resolve `defaultProps`. This logic is copied from `beginWork`. - // TODO: Consider moving this switch statement into that module. Also, - // could maybe use this as an opportunity to say `use` doesn't work with - // `defaultProps` :) - var Component = unitOfWork.type; - var unresolvedProps = unitOfWork.pendingProps; - var resolvedProps = - disableDefaultPropsExceptForClasses || - unitOfWork.elementType === Component - ? unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - Component, - unresolvedProps - ); - var context; + var siblingFiber = completedWork.sibling; - { - var unmaskedContext = getUnmaskedContext( - unitOfWork, - Component, - true - ); - context = getMaskedContext(unitOfWork, unmaskedContext); - } + if (siblingFiber !== null) { + // If there is more work to do in this returnFiber, do that next. + workInProgress = siblingFiber; + return; + } // Otherwise, return to the parent + // $FlowFixMe[incompatible-type] we bail out when we get a null - next = replayFunctionComponent( - current, - unitOfWork, - resolvedProps, - Component, - context, - workInProgressRootRenderLanes - ); - break; - } - case ForwardRef: { - // Resolve `defaultProps`. This logic is copied from `beginWork`. - // TODO: Consider moving this switch statement into that module. Also, - // could maybe use this as an opportunity to say `use` doesn't work with - // `defaultProps` :) - var _Component = unitOfWork.type.render; - var _unresolvedProps = unitOfWork.pendingProps; - - var _resolvedProps = - disableDefaultPropsExceptForClasses || - unitOfWork.elementType === _Component - ? _unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - _Component, - _unresolvedProps - ); - - next = replayFunctionComponent( - current, - unitOfWork, - _resolvedProps, - _Component, - unitOfWork.ref, - workInProgressRootRenderLanes - ); - break; - } + completedWork = returnFiber; // Update the next thing we're working on in case something throws. - case HostComponent: { - // Some host components are stateful (that's how we implement form - // actions) but we don't bother to reuse the memoized state because it's - // not worth the extra code. The main reason to reuse the previous hooks - // is to reuse uncached promises, but we happen to know that the only - // promises that a host component might suspend on are definitely cached - // because they are controlled by us. So don't bother. - resetHooksOnUnwind(unitOfWork); // Fallthrough to the next branch. - } + workInProgress = completedWork; + } while (completedWork !== null); // We've reached the root. - default: { - // Other types besides function components are reset completely before - // being replayed. Currently this only happens when a Usable type is - // reconciled — the reconciler will suspend. - // - // We reset the fiber back to its original state; however, this isn't - // a full "unwind" because we're going to reuse the promises that were - // reconciled previously. So it's intentional that we don't call - // resetSuspendedWorkLoopOnUnwind here. - unwindInterruptedWork(current, unitOfWork); - unitOfWork = workInProgress = resetWorkInProgress( - unitOfWork, - entangledRenderLanes - ); - next = beginWork(current, unitOfWork, entangledRenderLanes); - break; - } - } - if (isProfilingMode) { - stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); - } // The begin phase finished successfully without suspending. Return to the - // normal work loop. + if (workInProgressRootExitStatus === RootInProgress) { + workInProgressRootExitStatus = RootCompleted; + } +} - resetCurrentFiber(); - unitOfWork.memoizedProps = unitOfWork.pendingProps; +function unwindUnitOfWork(unitOfWork) { + var incompleteWork = unitOfWork; - if (next === null) { - // If this doesn't spawn new work, complete the current work. - completeUnitOfWork(unitOfWork); - } else { - workInProgress = next; - } + do { + // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. + var current = incompleteWork.alternate; // This fiber did not complete because something threw. Pop values off + // the stack without entering the complete phase. If this is a boundary, + // capture values if possible. - { - ReactSharedInternals.owner = null; - } - } + var next = unwindWork(current, incompleteWork); // Because this fiber did not complete, don't reset its lanes. - function throwAndUnwindWorkLoop(root, unitOfWork, thrownValue) { - // This is a fork of performUnitOfWork specifcally for unwinding a fiber - // that threw an exception. + if (next !== null) { + // Found a boundary that can handle this exception. Re-renter the + // begin phase. This branch will return us to the normal work loop. // - // Return to the normal work loop. This will unwind the stack, and potentially - // result in showing a fallback. - resetSuspendedWorkLoopOnUnwind(unitOfWork); - var returnFiber = unitOfWork.return; + // Since we're restarting, remove anything that is not a host effect + // from the effect tag. + next.flags &= HostEffectMask; + workInProgress = next; + return; + } // Keep unwinding until we reach either a boundary or the root. - try { - // Find and mark the nearest Suspense or error boundary that can handle - // this "exception". - var didFatal = throwException( - root, - returnFiber, - unitOfWork, - thrownValue, - workInProgressRootRenderLanes - ); - - if (didFatal) { - panicOnRootError(root, thrownValue); - return; - } - } catch (error) { - // We had trouble processing the error. An example of this happening is - // when accessing the `componentDidCatch` property of an error boundary - // throws an error. A weird edge case. There's a regression test for this. - // To prevent an infinite loop, bubble the error up to the next parent. - if (returnFiber !== null) { - workInProgress = returnFiber; - throw error; - } else { - panicOnRootError(root, thrownValue); - return; - } - } - if (unitOfWork.flags & Incomplete) { - // Unwind the stack until we reach the nearest boundary. - unwindUnitOfWork(unitOfWork); - } else { - // Although the fiber suspended, we're intentionally going to commit it in - // an inconsistent state. We can do this safely in cases where we know the - // inconsistent tree will be hidden. - // - // This currently only applies to Legacy Suspense implementation, but we may - // port a version of this to concurrent roots, too, when performing a - // synchronous render. Because that will allow us to mutate the tree as we - // go instead of buffering mutations until the end. Though it's unclear if - // this particular path is how that would be implemented. - completeUnitOfWork(unitOfWork); + if ((incompleteWork.mode & ProfileMode) !== NoMode) { + // Record the render duration for the fiber that errored. + stopProfilerTimerIfRunningAndRecordDelta(incompleteWork, false); // Include the time spent working on failed children before continuing. + + var actualDuration = incompleteWork.actualDuration; + var child = incompleteWork.child; + + while (child !== null) { + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + actualDuration += child.actualDuration; + child = child.sibling; } - } - function panicOnRootError(root, error) { - // There's no ancestor that can handle this exception. This should never - // happen because the root is supposed to capture all errors that weren't - // caught by an error boundary. This is a fatal error, or panic condition, - // because we've run out of ways to recover. - workInProgressRootExitStatus = RootFatalErrored; - logUncaughtError(root, createCapturedValueAtFiber(error, root.current)); // Set `workInProgress` to null. This represents advancing to the next - // sibling, or the parent if there are no siblings. But since the root - // has no siblings nor a parent, we set it to null. Usually this is - // handled by `completeUnitOfWork` or `unwindWork`, but since we're - // intentionally not calling those, we need set it here. - // TODO: Consider calling `unwindWork` to pop the contexts. + incompleteWork.actualDuration = actualDuration; + } // TODO: Once we stop prerendering siblings, instead of resetting the parent + // of the node being unwound, we should be able to reset node itself as we + // unwind the stack. Saves an additional null check. + + + var returnFiber = incompleteWork.return; + + if (returnFiber !== null) { + // Mark the parent fiber as incomplete and clear its subtree flags. + // TODO: Once we stop prerendering siblings, we may be able to get rid of + // the Incomplete flag because unwinding to the nearest boundary will + // happen synchronously. + returnFiber.flags |= Incomplete; + returnFiber.subtreeFlags = NoFlags$1; + returnFiber.deletions = null; + } // NOTE: If we re-enable sibling prerendering in some cases, here we + // would switch to the normal completion path: check if a sibling + // exists, and if so, begin work on it. + // Otherwise, return to the parent + // $FlowFixMe[incompatible-type] we bail out when we get a null + + + incompleteWork = returnFiber; // Update the next thing we're working on in case something throws. + + workInProgress = incompleteWork; + } while (incompleteWork !== null); // We've unwound all the way to the root. + + + workInProgressRootExitStatus = RootDidNotComplete; + workInProgress = null; +} + +function commitRoot(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, spawnedLane) { + // TODO: This no longer makes any sense. We already wrap the mutation and + // layout phases. Should be able to remove. + var prevTransition = ReactSharedInternals.T; + var previousUpdateLanePriority = getCurrentUpdatePriority(); + + try { + setCurrentUpdatePriority(DiscreteEventPriority); + ReactSharedInternals.T = null; + commitRootImpl(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, previousUpdateLanePriority, spawnedLane); + } finally { + ReactSharedInternals.T = prevTransition; + setCurrentUpdatePriority(previousUpdateLanePriority); + } + + return null; +} + +function commitRootImpl(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, renderPriorityLevel, spawnedLane) { + do { + // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which + // means `flushPassiveEffects` will sometimes result in additional + // passive effects. So we need to keep flushing in a loop until there are + // no more pending effects. + // TODO: Might be better if `flushPassiveEffects` did not automatically + // flush synchronous work at the end, to avoid factoring hazards like this. + flushPassiveEffects(); + } while (rootWithPendingPassiveEffects !== null); - workInProgress = null; + flushRenderPhaseStrictModeWarningsInDEV(); + + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } + + var finishedWork = root.finishedWork; + var lanes = root.finishedLanes; + + { + markCommitStarted(lanes); + } + + if (finishedWork === null) { + + { + markCommitStopped(); + } + + return null; + } else { + { + if (lanes === NoLanes) { + error('root.finishedLanes should not be empty during a commit. This is a ' + 'bug in React.'); + } } + } - function completeUnitOfWork(unitOfWork) { - // Attempt to complete the current unit of work, then move to the next - // sibling. If there are no more siblings, return to the parent fiber. - var completedWork = unitOfWork; + root.finishedWork = null; + root.finishedLanes = NoLanes; - do { - { - if ((completedWork.flags & Incomplete) !== NoFlags$1) { - // NOTE: If we re-enable sibling prerendering in some cases, this branch - // is where we would switch to the unwinding path. - error( - "Internal React error: Expected this fiber to be complete, but " + - "it isn't. It should have been unwound. This is a bug in React." - ); - } - } // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. + if (finishedWork === root.current) { + throw new Error('Cannot commit the same tree as before. This error is likely caused by ' + 'a bug in React. Please file an issue.'); + } // commitRoot never returns a continuation; it always finishes synchronously. + // So we can clear these now to allow a new callback to be scheduled. - var current = completedWork.alternate; - var returnFiber = completedWork.return; - setCurrentFiber(completedWork); - var next = void 0; - if ((completedWork.mode & ProfileMode) === NoMode) { - next = completeWork(current, completedWork, entangledRenderLanes); - } else { - startProfilerTimer(completedWork); - next = completeWork(current, completedWork, entangledRenderLanes); // Update render duration assuming we didn't error. + root.callbackNode = null; + root.callbackPriority = NoLane; + root.cancelPendingCommit = null; // Check which lanes no longer have any work scheduled on them, and mark + // those as finished. - stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); - } + var remainingLanes = mergeLanes(finishedWork.lanes, finishedWork.childLanes); // Make sure to account for lanes that were updated by a concurrent event + // during the render phase; don't mark them as finished. - resetCurrentFiber(); + var concurrentlyUpdatedLanes = getConcurrentlyUpdatedLanes(); + remainingLanes = mergeLanes(remainingLanes, concurrentlyUpdatedLanes); + markRootFinished(root, remainingLanes, spawnedLane); // Reset this before firing side effects so we can detect recursive updates. - if (next !== null) { - // Completing this fiber spawned new work. Work on that next. - workInProgress = next; - return; - } + didIncludeCommitPhaseUpdate = false; - var siblingFiber = completedWork.sibling; + if (root === workInProgressRoot) { + // We can reset these now that they are finished. + workInProgressRoot = null; + workInProgress = null; + workInProgressRootRenderLanes = NoLanes; + } // If there are pending passive effects, schedule a callback to process them. + // Do this as early as possible, so it is queued before anything else that + // might get scheduled in the commit phase. (See #16714.) + // TODO: Delete all other places that schedule the passive effect callback + // They're redundant. - if (siblingFiber !== null) { - // If there is more work to do in this returnFiber, do that next. - workInProgress = siblingFiber; - return; - } // Otherwise, return to the parent - // $FlowFixMe[incompatible-type] we bail out when we get a null - completedWork = returnFiber; // Update the next thing we're working on in case something throws. + if ((finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1 || (finishedWork.flags & PassiveMask) !== NoFlags$1) { + if (!rootDoesHavePassiveEffects) { + rootDoesHavePassiveEffects = true; + pendingPassiveEffectsRemainingLanes = remainingLanes; // workInProgressTransitions might be overwritten, so we want + // to store it in pendingPassiveTransitions until they get processed + // We need to pass this through as an argument to commitRoot + // because workInProgressTransitions might have changed between + // the previous render and commit if we throttle the commit + // with setTimeout - workInProgress = completedWork; - } while (completedWork !== null); // We've reached the root. + pendingPassiveTransitions = transitions; + scheduleCallback(NormalPriority$1, function () { + flushPassiveEffects(); // This render triggered passive effects: release the root cache pool + // *after* passive effects fire to avoid freeing a cache pool that may + // be referenced by a node in the tree (HostRoot, Cache boundary etc) - if (workInProgressRootExitStatus === RootInProgress) { - workInProgressRootExitStatus = RootCompleted; - } + return null; + }); } + } // Check if there are any effects in the whole tree. + // TODO: This is left over from the effect list implementation, where we had + // to check for the existence of `firstEffect` to satisfy Flow. I think the + // only other reason this optimization exists is because it affects profiling. + // Reconsider whether this is necessary. - function unwindUnitOfWork(unitOfWork) { - var incompleteWork = unitOfWork; - do { - // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. - var current = incompleteWork.alternate; // This fiber did not complete because something threw. Pop values off - // the stack without entering the complete phase. If this is a boundary, - // capture values if possible. - - var next = unwindWork(current, incompleteWork); // Because this fiber did not complete, don't reset its lanes. - - if (next !== null) { - // Found a boundary that can handle this exception. Re-renter the - // begin phase. This branch will return us to the normal work loop. - // - // Since we're restarting, remove anything that is not a host effect - // from the effect tag. - next.flags &= HostEffectMask; - workInProgress = next; - return; - } // Keep unwinding until we reach either a boundary or the root. + var subtreeHasEffects = (finishedWork.subtreeFlags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags$1; + var rootHasEffect = (finishedWork.flags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags$1; - if ((incompleteWork.mode & ProfileMode) !== NoMode) { - // Record the render duration for the fiber that errored. - stopProfilerTimerIfRunningAndRecordDelta(incompleteWork, false); // Include the time spent working on failed children before continuing. + if (subtreeHasEffects || rootHasEffect) { + var prevTransition = ReactSharedInternals.T; + ReactSharedInternals.T = null; + var previousPriority = getCurrentUpdatePriority(); + setCurrentUpdatePriority(DiscreteEventPriority); + var prevExecutionContext = executionContext; + executionContext |= CommitContext; // Reset this to null before calling lifecycles - var actualDuration = incompleteWork.actualDuration; - var child = incompleteWork.child; + { + ReactSharedInternals.owner = null; + } // The commit phase is broken into several sub-phases. We do a separate pass + // of the effect list for each phase: all mutation effects come before all + // layout effects, and so on. + // The first phase a "before mutation" phase. We use this phase to read the + // state of the host tree right before we mutate it. This is where + // getSnapshotBeforeUpdate is called. - while (child !== null) { - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - actualDuration += child.actualDuration; - child = child.sibling; - } - incompleteWork.actualDuration = actualDuration; - } // TODO: Once we stop prerendering siblings, instead of resetting the parent - // of the node being unwound, we should be able to reset node itself as we - // unwind the stack. Saves an additional null check. - - var returnFiber = incompleteWork.return; - - if (returnFiber !== null) { - // Mark the parent fiber as incomplete and clear its subtree flags. - // TODO: Once we stop prerendering siblings, we may be able to get rid of - // the Incomplete flag because unwinding to the nearest boundary will - // happen synchronously. - returnFiber.flags |= Incomplete; - returnFiber.subtreeFlags = NoFlags$1; - returnFiber.deletions = null; - } // NOTE: If we re-enable sibling prerendering in some cases, here we - // would switch to the normal completion path: check if a sibling - // exists, and if so, begin work on it. - // Otherwise, return to the parent - // $FlowFixMe[incompatible-type] we bail out when we get a null - - incompleteWork = returnFiber; // Update the next thing we're working on in case something throws. - - workInProgress = incompleteWork; - } while (incompleteWork !== null); // We've unwound all the way to the root. - - workInProgressRootExitStatus = RootDidNotComplete; - workInProgress = null; - } - - function commitRoot( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - spawnedLane - ) { - // TODO: This no longer makes any sense. We already wrap the mutation and - // layout phases. Should be able to remove. - var prevTransition = ReactSharedInternals.T; - var previousUpdateLanePriority = getCurrentUpdatePriority(); + commitBeforeMutationEffects(root, finishedWork); - try { - setCurrentUpdatePriority(DiscreteEventPriority); - ReactSharedInternals.T = null; - commitRootImpl( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - previousUpdateLanePriority, - spawnedLane - ); - } finally { - ReactSharedInternals.T = prevTransition; - setCurrentUpdatePriority(previousUpdateLanePriority); - } + { + // Mark the current commit time to be shared by all Profilers in this + // batch. This enables them to be grouped later. + recordCommitTime(); + } // The next phase is the mutation phase, where we mutate the host tree. - return null; - } - function commitRootImpl( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - renderPriorityLevel, - spawnedLane - ) { - do { - // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which - // means `flushPassiveEffects` will sometimes result in additional - // passive effects. So we need to keep flushing in a loop until there are - // no more pending effects. - // TODO: Might be better if `flushPassiveEffects` did not automatically - // flush synchronous work at the end, to avoid factoring hazards like this. - flushPassiveEffects(); - } while (rootWithPendingPassiveEffects !== null); + commitMutationEffects(root, finishedWork, lanes); + // the mutation phase, so that the previous tree is still current during + // componentWillUnmount, but before the layout phase, so that the finished + // work is current during componentDidMount/Update. - flushRenderPhaseStrictModeWarningsInDEV(); + root.current = finishedWork; // The next phase is the layout phase, where we call effects that read - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); - } + { + markLayoutEffectsStarted(lanes); + } - var finishedWork = root.finishedWork; - var lanes = root.finishedLanes; + commitLayoutEffects(finishedWork, root, lanes); - { - markCommitStarted(lanes); - } + { + markLayoutEffectsStopped(); + } // Tell Scheduler to yield at the end of the frame, so the browser has an + // opportunity to paint. - if (finishedWork === null) { - { - markCommitStopped(); - } - return null; - } else { - { - if (lanes === NoLanes) { - error( - "root.finishedLanes should not be empty during a commit. This is a " + - "bug in React." - ); - } - } - } + requestPaint(); + executionContext = prevExecutionContext; // Reset the priority to the previous non-sync value. - root.finishedWork = null; - root.finishedLanes = NoLanes; - - if (finishedWork === root.current) { - throw new Error( - "Cannot commit the same tree as before. This error is likely caused by " + - "a bug in React. Please file an issue." - ); - } // commitRoot never returns a continuation; it always finishes synchronously. - // So we can clear these now to allow a new callback to be scheduled. - - root.callbackNode = null; - root.callbackPriority = NoLane; - root.cancelPendingCommit = null; // Check which lanes no longer have any work scheduled on them, and mark - // those as finished. - - var remainingLanes = mergeLanes( - finishedWork.lanes, - finishedWork.childLanes - ); // Make sure to account for lanes that were updated by a concurrent event - // during the render phase; don't mark them as finished. - - var concurrentlyUpdatedLanes = getConcurrentlyUpdatedLanes(); - remainingLanes = mergeLanes(remainingLanes, concurrentlyUpdatedLanes); - markRootFinished(root, remainingLanes, spawnedLane); // Reset this before firing side effects so we can detect recursive updates. - - didIncludeCommitPhaseUpdate = false; - - if (root === workInProgressRoot) { - // We can reset these now that they are finished. - workInProgressRoot = null; - workInProgress = null; - workInProgressRootRenderLanes = NoLanes; - } // If there are pending passive effects, schedule a callback to process them. - // Do this as early as possible, so it is queued before anything else that - // might get scheduled in the commit phase. (See #16714.) - // TODO: Delete all other places that schedule the passive effect callback - // They're redundant. - - if ( - (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1 || - (finishedWork.flags & PassiveMask) !== NoFlags$1 - ) { - if (!rootDoesHavePassiveEffects) { - rootDoesHavePassiveEffects = true; - pendingPassiveEffectsRemainingLanes = remainingLanes; // workInProgressTransitions might be overwritten, so we want - // to store it in pendingPassiveTransitions until they get processed - // We need to pass this through as an argument to commitRoot - // because workInProgressTransitions might have changed between - // the previous render and commit if we throttle the commit - // with setTimeout - - pendingPassiveTransitions = transitions; - scheduleCallback(NormalPriority$1, function () { - flushPassiveEffects(); // This render triggered passive effects: release the root cache pool - // *after* passive effects fire to avoid freeing a cache pool that may - // be referenced by a node in the tree (HostRoot, Cache boundary etc) + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; + } else { + // No effects. + root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were + // no effects. + // TODO: Maybe there's a better way to report this. - return null; - }); - } - } // Check if there are any effects in the whole tree. - // TODO: This is left over from the effect list implementation, where we had - // to check for the existence of `firstEffect` to satisfy Flow. I think the - // only other reason this optimization exists is because it affects profiling. - // Reconsider whether this is necessary. - - var subtreeHasEffects = - (finishedWork.subtreeFlags & - (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== - NoFlags$1; - var rootHasEffect = - (finishedWork.flags & - (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== - NoFlags$1; - - if (subtreeHasEffects || rootHasEffect) { - var prevTransition = ReactSharedInternals.T; - ReactSharedInternals.T = null; - var previousPriority = getCurrentUpdatePriority(); - setCurrentUpdatePriority(DiscreteEventPriority); - var prevExecutionContext = executionContext; - executionContext |= CommitContext; // Reset this to null before calling lifecycles + { + recordCommitTime(); + } + } - { - ReactSharedInternals.owner = null; - } // The commit phase is broken into several sub-phases. We do a separate pass - // of the effect list for each phase: all mutation effects come before all - // layout effects, and so on. - // The first phase a "before mutation" phase. We use this phase to read the - // state of the host tree right before we mutate it. This is where - // getSnapshotBeforeUpdate is called. + var rootDidHavePassiveEffects = rootDoesHavePassiveEffects; - commitBeforeMutationEffects(root, finishedWork); + if (rootDoesHavePassiveEffects) { + // This commit has passive effects. Stash a reference to them. But don't + // schedule a callback until after flushing layout work. + rootDoesHavePassiveEffects = false; + rootWithPendingPassiveEffects = root; + pendingPassiveEffectsLanes = lanes; + } else { + // There were no passive effects, so we can immediately release the cache + // pool for this render. + releaseRootPooledCache(root, remainingLanes); - { - // Mark the current commit time to be shared by all Profilers in this - // batch. This enables them to be grouped later. - recordCommitTime(); - } // The next phase is the mutation phase, where we mutate the host tree. + { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = null; + } + } // Read this again, since an effect might have updated it - commitMutationEffects(root, finishedWork, lanes); - // the mutation phase, so that the previous tree is still current during - // componentWillUnmount, but before the layout phase, so that the finished - // work is current during componentDidMount/Update. - root.current = finishedWork; // The next phase is the layout phase, where we call effects that read + remainingLanes = root.pendingLanes; // Check if there's remaining work on this root + // TODO: This is part of the `componentDidCatch` implementation. Its purpose + // is to detect whether something might have called setState inside + // `componentDidCatch`. The mechanism is known to be flawed because `setState` + // inside `componentDidCatch` is itself flawed — that's why we recommend + // `getDerivedStateFromError` instead. However, it could be improved by + // checking if remainingLanes includes Sync work, instead of whether there's + // any work remaining at all (which would also include stuff like Suspense + // retries or transitions). It's been like this for a while, though, so fixing + // it probably isn't that urgent. - { - markLayoutEffectsStarted(lanes); - } + if (remainingLanes === NoLanes) { + // If there's no remaining work, we can clear the set of already failed + // error boundaries. + legacyErrorBoundariesThatAlreadyFailed = null; + } - commitLayoutEffects(finishedWork, root, lanes); + { + if (!rootDidHavePassiveEffects) { + commitDoubleInvokeEffectsInDEV(root, false); + } + } - { - markLayoutEffectsStopped(); - } // Tell Scheduler to yield at the end of the frame, so the browser has an - // opportunity to paint. + onCommitRoot(finishedWork.stateNode, renderPriorityLevel); - requestPaint(); - executionContext = prevExecutionContext; // Reset the priority to the previous non-sync value. + { + if (isDevToolsPresent) { + root.memoizedUpdaters.clear(); + } + } + // additional work on this root is scheduled. - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; - } else { - // No effects. - root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were - // no effects. - // TODO: Maybe there's a better way to report this. - { - recordCommitTime(); - } - } + ensureRootIsScheduled(root); - var rootDidHavePassiveEffects = rootDoesHavePassiveEffects; + if (recoverableErrors !== null) { + // There were errors during this render, but recovered from them without + // needing to surface it to the UI. We log them here. + var onRecoverableError = root.onRecoverableError; - if (rootDoesHavePassiveEffects) { - // This commit has passive effects. Stash a reference to them. But don't - // schedule a callback until after flushing layout work. - rootDoesHavePassiveEffects = false; - rootWithPendingPassiveEffects = root; - pendingPassiveEffectsLanes = lanes; - } else { - // There were no passive effects, so we can immediately release the cache - // pool for this render. - releaseRootPooledCache(root, remainingLanes); + for (var i = 0; i < recoverableErrors.length; i++) { + var recoverableError = recoverableErrors[i]; + var errorInfo = makeErrorInfo(recoverableError.stack); + onRecoverableError(recoverableError.value, errorInfo); + } + } // If the passive effects are the result of a discrete render, flush them + // synchronously at the end of the current task so that the result is + // immediately observable. Otherwise, we assume that they are not + // order-dependent and do not need to be observed by external systems, so we + // can wait until after paint. + // TODO: We can optimize this by not scheduling the callback earlier. Since we + // currently schedule the callback in multiple places, will wait until those + // are consolidated. - { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = null; - } - } // Read this again, since an effect might have updated it - remainingLanes = root.pendingLanes; // Check if there's remaining work on this root - // TODO: This is part of the `componentDidCatch` implementation. Its purpose - // is to detect whether something might have called setState inside - // `componentDidCatch`. The mechanism is known to be flawed because `setState` - // inside `componentDidCatch` is itself flawed — that's why we recommend - // `getDerivedStateFromError` instead. However, it could be improved by - // checking if remainingLanes includes Sync work, instead of whether there's - // any work remaining at all (which would also include stuff like Suspense - // retries or transitions). It's been like this for a while, though, so fixing - // it probably isn't that urgent. + if (includesSyncLane(pendingPassiveEffectsLanes) && (root.tag !== LegacyRoot)) { + flushPassiveEffects(); + } // Read this again, since a passive effect might have updated it - if (remainingLanes === NoLanes) { - // If there's no remaining work, we can clear the set of already failed - // error boundaries. - legacyErrorBoundariesThatAlreadyFailed = null; - } - { - if (!rootDidHavePassiveEffects) { - commitDoubleInvokeEffectsInDEV(root, false); - } - } + remainingLanes = root.pendingLanes; // Check if this render scheduled a cascading synchronous update. This is a + // heurstic to detect infinite update loops. We are intentionally excluding + // hydration lanes in this check, because render triggered by selective + // hydration is conceptually not an update. - onCommitRoot(finishedWork.stateNode, renderPriorityLevel); + if ( // Check if there was a recursive update spawned by this render, in either + // the render phase or the commit phase. We track these explicitly because + // we can't infer from the remaining lanes alone. + enableInfiniteRenderLoopDetection && (didIncludeRenderPhaseUpdate || didIncludeCommitPhaseUpdate) || // Was the finished render the result of an update (not hydration)? + includesSomeLane(lanes, UpdateLanes) && // Did it schedule a sync update? + includesSomeLane(remainingLanes, SyncUpdateLanes)) { + { + markNestedUpdateScheduled(); + } // Count the number of times the root synchronously re-renders without + // finishing. If there are too many, it indicates an infinite update loop. - { - if (isDevToolsPresent) { - root.memoizedUpdaters.clear(); - } - } - // additional work on this root is scheduled. - ensureRootIsScheduled(root); + if (root === rootWithNestedUpdates) { + nestedUpdateCount++; + } else { + nestedUpdateCount = 0; + rootWithNestedUpdates = root; + } + } else { + nestedUpdateCount = 0; + } // If layout work was scheduled, flush it now. - if (recoverableErrors !== null) { - // There were errors during this render, but recovered from them without - // needing to surface it to the UI. We log them here. - var onRecoverableError = root.onRecoverableError; - for (var i = 0; i < recoverableErrors.length; i++) { - var recoverableError = recoverableErrors[i]; - var errorInfo = makeErrorInfo(recoverableError.stack); - onRecoverableError(recoverableError.value, errorInfo); - } - } // If the passive effects are the result of a discrete render, flush them - // synchronously at the end of the current task so that the result is - // immediately observable. Otherwise, we assume that they are not - // order-dependent and do not need to be observed by external systems, so we - // can wait until after paint. - // TODO: We can optimize this by not scheduling the callback earlier. Since we - // currently schedule the callback in multiple places, will wait until those - // are consolidated. + flushSyncWorkOnAllRoots(); - if ( - includesSyncLane(pendingPassiveEffectsLanes) && - root.tag !== LegacyRoot - ) { - flushPassiveEffects(); - } // Read this again, since a passive effect might have updated it - - remainingLanes = root.pendingLanes; // Check if this render scheduled a cascading synchronous update. This is a - // heurstic to detect infinite update loops. We are intentionally excluding - // hydration lanes in this check, because render triggered by selective - // hydration is conceptually not an update. - - if ( - // Check if there was a recursive update spawned by this render, in either - // the render phase or the commit phase. We track these explicitly because - // we can't infer from the remaining lanes alone. - (enableInfiniteRenderLoopDetection && - (didIncludeRenderPhaseUpdate || didIncludeCommitPhaseUpdate)) || // Was the finished render the result of an update (not hydration)? - (includesSomeLane(lanes, UpdateLanes) && // Did it schedule a sync update? - includesSomeLane(remainingLanes, SyncUpdateLanes)) - ) { - { - markNestedUpdateScheduled(); - } // Count the number of times the root synchronously re-renders without - // finishing. If there are too many, it indicates an infinite update loop. + { + markCommitStopped(); + } - if (root === rootWithNestedUpdates) { - nestedUpdateCount++; - } else { - nestedUpdateCount = 0; - rootWithNestedUpdates = root; - } - } else { - nestedUpdateCount = 0; - } // If layout work was scheduled, flush it now. + return null; +} - flushSyncWorkOnAllRoots(); +function makeErrorInfo(componentStack) { + var errorInfo = { + componentStack: componentStack + }; - { - markCommitStopped(); + { + Object.defineProperty(errorInfo, 'digest', { + get: function () { + error('You are accessing "digest" from the errorInfo object passed to onRecoverableError.' + ' This property is no longer provided as part of errorInfo but can be accessed as a property' + ' of the Error instance itself.'); } + }); + } - return null; - } + return errorInfo; +} - function makeErrorInfo(componentStack) { - var errorInfo = { - componentStack: componentStack - }; +function releaseRootPooledCache(root, remainingLanes) { + { + var pooledCacheLanes = root.pooledCacheLanes &= remainingLanes; - { - Object.defineProperty(errorInfo, "digest", { - get: function () { - error( - 'You are accessing "digest" from the errorInfo object passed to onRecoverableError.' + - " This property is no longer provided as part of errorInfo but can be accessed as a property" + - " of the Error instance itself." - ); - } - }); + if (pooledCacheLanes === NoLanes) { + // None of the remaining work relies on the cache pool. Clear it so + // subsequent requests get a new cache + var pooledCache = root.pooledCache; + + if (pooledCache != null) { + root.pooledCache = null; + releaseCache(pooledCache); } + } + } +} + +function flushPassiveEffects() { + // Returns whether passive effects were flushed. + // TODO: Combine this check with the one in flushPassiveEFfectsImpl. We should + // probably just combine the two functions. I believe they were only separate + // in the first place because we used to wrap it with + // `Scheduler.runWithPriority`, which accepts a function. But now we track the + // priority within React itself, so we can mutate the variable directly. + if (rootWithPendingPassiveEffects !== null) { + // Cache the root since rootWithPendingPassiveEffects is cleared in + // flushPassiveEffectsImpl + var root = rootWithPendingPassiveEffects; // Cache and clear the remaining lanes flag; it must be reset since this + // method can be called from various places, not always from commitRoot + // where the remaining lanes are known + + var remainingLanes = pendingPassiveEffectsRemainingLanes; + pendingPassiveEffectsRemainingLanes = NoLanes; + var renderPriority = lanesToEventPriority(pendingPassiveEffectsLanes); + var priority = lowerEventPriority(DefaultEventPriority, renderPriority); + var prevTransition = ReactSharedInternals.T; + var previousPriority = getCurrentUpdatePriority(); + + try { + setCurrentUpdatePriority(priority); + ReactSharedInternals.T = null; + return flushPassiveEffectsImpl(); + } finally { + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; // Once passive effects have run for the tree - giving components a + // chance to retain cache instances they use - release the pooled + // cache at the root (if there is one) + + releaseRootPooledCache(root, remainingLanes); + } + } + + return false; +} +function enqueuePendingPassiveProfilerEffect(fiber) { + { + pendingPassiveProfilerEffects.push(fiber); - return errorInfo; + if (!rootDoesHavePassiveEffects) { + rootDoesHavePassiveEffects = true; + scheduleCallback(NormalPriority$1, function () { + flushPassiveEffects(); + return null; + }); } + } +} - function releaseRootPooledCache(root, remainingLanes) { - { - var pooledCacheLanes = (root.pooledCacheLanes &= remainingLanes); +function flushPassiveEffectsImpl() { + if (rootWithPendingPassiveEffects === null) { + return false; + } // Cache and clear the transitions flag - if (pooledCacheLanes === NoLanes) { - // None of the remaining work relies on the cache pool. Clear it so - // subsequent requests get a new cache - var pooledCache = root.pooledCache; - if (pooledCache != null) { - root.pooledCache = null; - releaseCache(pooledCache); - } - } - } - } + var transitions = pendingPassiveTransitions; + pendingPassiveTransitions = null; + var root = rootWithPendingPassiveEffects; + var lanes = pendingPassiveEffectsLanes; + rootWithPendingPassiveEffects = null; // TODO: This is sometimes out of sync with rootWithPendingPassiveEffects. + // Figure out why and fix it. It's not causing any known issues (probably + // because it's only used for profiling), but it's a refactor hazard. - function flushPassiveEffects() { - // Returns whether passive effects were flushed. - // TODO: Combine this check with the one in flushPassiveEFfectsImpl. We should - // probably just combine the two functions. I believe they were only separate - // in the first place because we used to wrap it with - // `Scheduler.runWithPriority`, which accepts a function. But now we track the - // priority within React itself, so we can mutate the variable directly. - if (rootWithPendingPassiveEffects !== null) { - // Cache the root since rootWithPendingPassiveEffects is cleared in - // flushPassiveEffectsImpl - var root = rootWithPendingPassiveEffects; // Cache and clear the remaining lanes flag; it must be reset since this - // method can be called from various places, not always from commitRoot - // where the remaining lanes are known + pendingPassiveEffectsLanes = NoLanes; - var remainingLanes = pendingPassiveEffectsRemainingLanes; - pendingPassiveEffectsRemainingLanes = NoLanes; - var renderPriority = lanesToEventPriority(pendingPassiveEffectsLanes); - var priority = lowerEventPriority(DefaultEventPriority, renderPriority); - var prevTransition = ReactSharedInternals.T; - var previousPriority = getCurrentUpdatePriority(); + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Cannot flush passive effects while already rendering.'); + } - try { - setCurrentUpdatePriority(priority); - ReactSharedInternals.T = null; - return flushPassiveEffectsImpl(); - } finally { - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; // Once passive effects have run for the tree - giving components a - // chance to retain cache instances they use - release the pooled - // cache at the root (if there is one) + { + isFlushingPassiveEffects = true; + didScheduleUpdateDuringPassiveEffects = false; + } - releaseRootPooledCache(root, remainingLanes); - } - } + { + markPassiveEffectsStarted(lanes); + } - return false; - } - function enqueuePendingPassiveProfilerEffect(fiber) { - { - pendingPassiveProfilerEffects.push(fiber); + var prevExecutionContext = executionContext; + executionContext |= CommitContext; + commitPassiveUnmountEffects(root.current); + commitPassiveMountEffects(root, root.current, lanes, transitions); // TODO: Move to commitPassiveMountEffects - if (!rootDoesHavePassiveEffects) { - rootDoesHavePassiveEffects = true; - scheduleCallback(NormalPriority$1, function () { - flushPassiveEffects(); - return null; - }); - } - } - } + { + var profilerEffects = pendingPassiveProfilerEffects; + pendingPassiveProfilerEffects = []; - function flushPassiveEffectsImpl() { - if (rootWithPendingPassiveEffects === null) { - return false; - } // Cache and clear the transitions flag + for (var i = 0; i < profilerEffects.length; i++) { + var fiber = profilerEffects[i]; + commitPassiveEffectDurations(root, fiber); + } + } - var transitions = pendingPassiveTransitions; - pendingPassiveTransitions = null; - var root = rootWithPendingPassiveEffects; - var lanes = pendingPassiveEffectsLanes; - rootWithPendingPassiveEffects = null; // TODO: This is sometimes out of sync with rootWithPendingPassiveEffects. - // Figure out why and fix it. It's not causing any known issues (probably - // because it's only used for profiling), but it's a refactor hazard. + { + markPassiveEffectsStopped(); + } - pendingPassiveEffectsLanes = NoLanes; + { + commitDoubleInvokeEffectsInDEV(root, true); + } - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error( - "Cannot flush passive effects while already rendering." - ); - } + executionContext = prevExecutionContext; + flushSyncWorkOnAllRoots(); - { - isFlushingPassiveEffects = true; - didScheduleUpdateDuringPassiveEffects = false; + { + // If additional passive effects were scheduled, increment a counter. If this + // exceeds the limit, we'll fire a warning. + if (didScheduleUpdateDuringPassiveEffects) { + if (root === rootWithPassiveNestedUpdates) { + nestedPassiveUpdateCount++; + } else { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = root; } + } else { + nestedPassiveUpdateCount = 0; + } - { - markPassiveEffectsStarted(lanes); - } + isFlushingPassiveEffects = false; + didScheduleUpdateDuringPassiveEffects = false; + } // TODO: Move to commitPassiveMountEffects - var prevExecutionContext = executionContext; - executionContext |= CommitContext; - commitPassiveUnmountEffects(root.current); - commitPassiveMountEffects(root, root.current, lanes, transitions); // TODO: Move to commitPassiveMountEffects - { - var profilerEffects = pendingPassiveProfilerEffects; - pendingPassiveProfilerEffects = []; + onPostCommitRoot(root); - for (var i = 0; i < profilerEffects.length; i++) { - var fiber = profilerEffects[i]; - commitPassiveEffectDurations(root, fiber); - } - } + { + var stateNode = root.current.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; + } - { - markPassiveEffectsStopped(); - } + return true; +} - { - commitDoubleInvokeEffectsInDEV(root, true); - } +function isAlreadyFailedLegacyErrorBoundary(instance) { + return legacyErrorBoundariesThatAlreadyFailed !== null && legacyErrorBoundariesThatAlreadyFailed.has(instance); +} +function markLegacyErrorBoundaryAsFailed(instance) { + if (legacyErrorBoundariesThatAlreadyFailed === null) { + legacyErrorBoundariesThatAlreadyFailed = new Set([instance]); + } else { + legacyErrorBoundariesThatAlreadyFailed.add(instance); + } +} - executionContext = prevExecutionContext; - flushSyncWorkOnAllRoots(); +function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) { + var errorInfo = createCapturedValueAtFiber(error, sourceFiber); + var update = createRootErrorUpdate(rootFiber.stateNode, errorInfo, SyncLane); + var root = enqueueUpdate(rootFiber, update, SyncLane); - { - // If additional passive effects were scheduled, increment a counter. If this - // exceeds the limit, we'll fire a warning. - if (didScheduleUpdateDuringPassiveEffects) { - if (root === rootWithPassiveNestedUpdates) { - nestedPassiveUpdateCount++; - } else { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = root; - } - } else { - nestedPassiveUpdateCount = 0; - } + if (root !== null) { + markRootUpdated(root, SyncLane); + ensureRootIsScheduled(root); + } +} - isFlushingPassiveEffects = false; - didScheduleUpdateDuringPassiveEffects = false; - } // TODO: Move to commitPassiveMountEffects +function captureCommitPhaseError(sourceFiber, nearestMountedAncestor, error$1) { + { + setIsRunningInsertionEffect(false); + } + + if (sourceFiber.tag === HostRoot) { + // Error was thrown at the root. There is no parent, so the root + // itself should capture it. + captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error$1); + return; + } + + var fiber = nearestMountedAncestor; + + while (fiber !== null) { + if (fiber.tag === HostRoot) { + captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error$1); + return; + } else if (fiber.tag === ClassComponent) { + var ctor = fiber.type; + var instance = fiber.stateNode; + + if (typeof ctor.getDerivedStateFromError === 'function' || typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance)) { + var errorInfo = createCapturedValueAtFiber(error$1, sourceFiber); + var update = createClassErrorUpdate(SyncLane); + var root = enqueueUpdate(fiber, update, SyncLane); - onPostCommitRoot(root); + if (root !== null) { + initializeClassErrorUpdate(update, root, fiber, errorInfo); + markRootUpdated(root, SyncLane); + ensureRootIsScheduled(root); + } - { - var stateNode = root.current.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; + return; } - - return true; } - function isAlreadyFailedLegacyErrorBoundary(instance) { - return ( - legacyErrorBoundariesThatAlreadyFailed !== null && - legacyErrorBoundariesThatAlreadyFailed.has(instance) - ); - } - function markLegacyErrorBoundaryAsFailed(instance) { - if (legacyErrorBoundariesThatAlreadyFailed === null) { - legacyErrorBoundariesThatAlreadyFailed = new Set([instance]); - } else { - legacyErrorBoundariesThatAlreadyFailed.add(instance); - } - } + fiber = fiber.return; + } - function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) { - var errorInfo = createCapturedValueAtFiber(error, sourceFiber); - var update = createRootErrorUpdate( - rootFiber.stateNode, - errorInfo, - SyncLane - ); - var root = enqueueUpdate(rootFiber, update, SyncLane); + { + error('Internal React error: Attempted to capture a commit phase error ' + 'inside a detached tree. This indicates a bug in React. Potential ' + 'causes include deleting the same fiber more than once, committing an ' + 'already-finished tree, or an inconsistent return pointer.\n\n' + 'Error message:\n\n%s', error$1); + } +} +function attachPingListener(root, wakeable, lanes) { + // Attach a ping listener + // + // The data might resolve before we have a chance to commit the fallback. Or, + // in the case of a refresh, we'll never commit a fallback. So we need to + // attach a listener now. When it resolves ("pings"), we can decide whether to + // try rendering the tree again. + // + // Only attach a listener if one does not already exist for the lanes + // we're currently rendering (which acts like a "thread ID" here). + // + // We only need to do this in concurrent mode. Legacy Suspense always + // commits fallbacks synchronously, so there are no pings. + var pingCache = root.pingCache; + var threadIDs; + + if (pingCache === null) { + pingCache = root.pingCache = new PossiblyWeakMap(); + threadIDs = new Set(); + pingCache.set(wakeable, threadIDs); + } else { + threadIDs = pingCache.get(wakeable); + + if (threadIDs === undefined) { + threadIDs = new Set(); + pingCache.set(wakeable, threadIDs); + } + } + + if (!threadIDs.has(lanes)) { + workInProgressRootDidAttachPingListener = true; // Memoize using the thread ID to prevent redundant listeners. + + threadIDs.add(lanes); + var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes); - if (root !== null) { - markRootUpdated(root, SyncLane); - ensureRootIsScheduled(root); + { + if (isDevToolsPresent) { + // If we have pending work still, restore the original updaters + restorePendingUpdaters(root, lanes); } } - function captureCommitPhaseError( - sourceFiber, - nearestMountedAncestor, - error$1 - ) { - { - setIsRunningInsertionEffect(false); - } + wakeable.then(ping, ping); + } +} - if (sourceFiber.tag === HostRoot) { - // Error was thrown at the root. There is no parent, so the root - // itself should capture it. - captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error$1); - return; +function pingSuspendedRoot(root, wakeable, pingedLanes) { + var pingCache = root.pingCache; + + if (pingCache !== null) { + // The wakeable resolved, so we no longer need to memoize, because it will + // never be thrown again. + pingCache.delete(wakeable); + } + + markRootPinged(root, pingedLanes); + warnIfSuspenseResolutionNotWrappedWithActDEV(root); + + if (workInProgressRoot === root && isSubsetOfLanes(workInProgressRootRenderLanes, pingedLanes)) { + // Received a ping at the same priority level at which we're currently + // rendering. We might want to restart this render. This should mirror + // the logic of whether or not a root suspends once it completes. + // TODO: If we're rendering sync either due to Sync, Batched or expired, + // we should probably never restart. + // If we're suspended with delay, or if it's a retry, we'll always suspend + // so we can always restart. + if (workInProgressRootExitStatus === RootSuspendedWithDelay || workInProgressRootExitStatus === RootSuspended && includesOnlyRetries(workInProgressRootRenderLanes) && now$1() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) { + // Force a restart from the root by unwinding the stack. Unless this is + // being called from the render phase, because that would cause a crash. + if ((executionContext & RenderContext) === NoContext) { + prepareFreshStack(root, NoLanes); } + } else { + // Even though we can't restart right now, we might get an + // opportunity later. So we mark this render as having a ping. + workInProgressRootPingedLanes = mergeLanes(workInProgressRootPingedLanes, pingedLanes); + } + } - var fiber = nearestMountedAncestor; + ensureRootIsScheduled(root); +} - while (fiber !== null) { - if (fiber.tag === HostRoot) { - captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error$1); - return; - } else if (fiber.tag === ClassComponent) { - var ctor = fiber.type; - var instance = fiber.stateNode; +function retryTimedOutBoundary(boundaryFiber, retryLane) { + // The boundary fiber (a Suspense component or SuspenseList component) + // previously was rendered in its fallback state. One of the promises that + // suspended it has resolved, which means at least part of the tree was + // likely unblocked. Try rendering again, at a new lanes. + if (retryLane === NoLane) { + // TODO: Assign this to `suspenseState.retryLane`? to avoid + // unnecessary entanglement? + retryLane = requestRetryLane(boundaryFiber); + } // TODO: Special case idle priority? - if ( - typeof ctor.getDerivedStateFromError === "function" || - (typeof instance.componentDidCatch === "function" && - !isAlreadyFailedLegacyErrorBoundary(instance)) - ) { - var errorInfo = createCapturedValueAtFiber(error$1, sourceFiber); - var update = createClassErrorUpdate(SyncLane); - var root = enqueueUpdate(fiber, update, SyncLane); - - if (root !== null) { - initializeClassErrorUpdate(update, root, fiber, errorInfo); - markRootUpdated(root, SyncLane); - ensureRootIsScheduled(root); - } - return; - } - } + var root = enqueueConcurrentRenderForLane(boundaryFiber, retryLane); - fiber = fiber.return; - } + if (root !== null) { + markRootUpdated(root, retryLane); + ensureRootIsScheduled(root); + } +} - { - error( - "Internal React error: Attempted to capture a commit phase error " + - "inside a detached tree. This indicates a bug in React. Potential " + - "causes include deleting the same fiber more than once, committing an " + - "already-finished tree, or an inconsistent return pointer.\n\n" + - "Error message:\n\n%s", - error$1 - ); - } - } - function attachPingListener(root, wakeable, lanes) { - // Attach a ping listener - // - // The data might resolve before we have a chance to commit the fallback. Or, - // in the case of a refresh, we'll never commit a fallback. So we need to - // attach a listener now. When it resolves ("pings"), we can decide whether to - // try rendering the tree again. - // - // Only attach a listener if one does not already exist for the lanes - // we're currently rendering (which acts like a "thread ID" here). - // - // We only need to do this in concurrent mode. Legacy Suspense always - // commits fallbacks synchronously, so there are no pings. - var pingCache = root.pingCache; - var threadIDs; - - if (pingCache === null) { - pingCache = root.pingCache = new PossiblyWeakMap(); - threadIDs = new Set(); - pingCache.set(wakeable, threadIDs); - } else { - threadIDs = pingCache.get(wakeable); +function retryDehydratedSuspenseBoundary(boundaryFiber) { + var suspenseState = boundaryFiber.memoizedState; + var retryLane = NoLane; - if (threadIDs === undefined) { - threadIDs = new Set(); - pingCache.set(wakeable, threadIDs); - } - } + if (suspenseState !== null) { + retryLane = suspenseState.retryLane; + } - if (!threadIDs.has(lanes)) { - workInProgressRootDidAttachPingListener = true; // Memoize using the thread ID to prevent redundant listeners. + retryTimedOutBoundary(boundaryFiber, retryLane); +} +function resolveRetryWakeable(boundaryFiber, wakeable) { + var retryLane = NoLane; // Default - threadIDs.add(lanes); - var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes); + var retryCache; - { - if (isDevToolsPresent) { - // If we have pending work still, restore the original updaters - restorePendingUpdaters(root, lanes); - } - } + switch (boundaryFiber.tag) { + case SuspenseComponent: + retryCache = boundaryFiber.stateNode; + var suspenseState = boundaryFiber.memoizedState; - wakeable.then(ping, ping); + if (suspenseState !== null) { + retryLane = suspenseState.retryLane; } - } - function pingSuspendedRoot(root, wakeable, pingedLanes) { - var pingCache = root.pingCache; - - if (pingCache !== null) { - // The wakeable resolved, so we no longer need to memoize, because it will - // never be thrown again. - pingCache.delete(wakeable); - } + break; - markRootPinged(root, pingedLanes); - warnIfSuspenseResolutionNotWrappedWithActDEV(root); + case SuspenseListComponent: + retryCache = boundaryFiber.stateNode; + break; - if ( - workInProgressRoot === root && - isSubsetOfLanes(workInProgressRootRenderLanes, pingedLanes) - ) { - // Received a ping at the same priority level at which we're currently - // rendering. We might want to restart this render. This should mirror - // the logic of whether or not a root suspends once it completes. - // TODO: If we're rendering sync either due to Sync, Batched or expired, - // we should probably never restart. - // If we're suspended with delay, or if it's a retry, we'll always suspend - // so we can always restart. - if ( - workInProgressRootExitStatus === RootSuspendedWithDelay || - (workInProgressRootExitStatus === RootSuspended && - includesOnlyRetries(workInProgressRootRenderLanes) && - now$1() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) - ) { - // Force a restart from the root by unwinding the stack. Unless this is - // being called from the render phase, because that would cause a crash. - if ((executionContext & RenderContext) === NoContext) { - prepareFreshStack(root, NoLanes); - } - } else { - // Even though we can't restart right now, we might get an - // opportunity later. So we mark this render as having a ping. - workInProgressRootPingedLanes = mergeLanes( - workInProgressRootPingedLanes, - pingedLanes - ); - } + case OffscreenComponent: + { + var instance = boundaryFiber.stateNode; + retryCache = instance._retryCache; + break; } - ensureRootIsScheduled(root); - } + default: + throw new Error('Pinged unknown suspense boundary type. ' + 'This is probably a bug in React.'); + } - function retryTimedOutBoundary(boundaryFiber, retryLane) { - // The boundary fiber (a Suspense component or SuspenseList component) - // previously was rendered in its fallback state. One of the promises that - // suspended it has resolved, which means at least part of the tree was - // likely unblocked. Try rendering again, at a new lanes. - if (retryLane === NoLane) { - // TODO: Assign this to `suspenseState.retryLane`? to avoid - // unnecessary entanglement? - retryLane = requestRetryLane(boundaryFiber); - } // TODO: Special case idle priority? + if (retryCache !== null) { + // The wakeable resolved, so we no longer need to memoize, because it will + // never be thrown again. + retryCache.delete(wakeable); + } - var root = enqueueConcurrentRenderForLane(boundaryFiber, retryLane); + retryTimedOutBoundary(boundaryFiber, retryLane); +} +function throwIfInfiniteUpdateLoopDetected() { + if (nestedUpdateCount > NESTED_UPDATE_LIMIT) { + nestedUpdateCount = 0; + nestedPassiveUpdateCount = 0; + rootWithNestedUpdates = null; + rootWithPassiveNestedUpdates = null; - if (root !== null) { - markRootUpdated(root, retryLane); - ensureRootIsScheduled(root); + if (enableInfiniteRenderLoopDetection) { + if (executionContext & RenderContext && workInProgressRoot !== null) { + // We're in the render phase. Disable the concurrent error recovery + // mechanism to ensure that the error we're about to throw gets handled. + // We need it to trigger the nearest error boundary so that the infinite + // update loop is broken. + workInProgressRoot.errorRecoveryDisabledLanes = mergeLanes(workInProgressRoot.errorRecoveryDisabledLanes, workInProgressRootRenderLanes); } } - function retryDehydratedSuspenseBoundary(boundaryFiber) { - var suspenseState = boundaryFiber.memoizedState; - var retryLane = NoLane; + throw new Error('Maximum update depth exceeded. This can happen when a component ' + 'repeatedly calls setState inside componentWillUpdate or ' + 'componentDidUpdate. React limits the number of nested updates to ' + 'prevent infinite loops.'); + } - if (suspenseState !== null) { - retryLane = suspenseState.retryLane; - } + { + if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = null; - retryTimedOutBoundary(boundaryFiber, retryLane); + error('Maximum update depth exceeded. This can happen when a component ' + "calls setState inside useEffect, but useEffect either doesn't " + 'have a dependency array, or one of the dependencies changes on ' + 'every render.'); } - function resolveRetryWakeable(boundaryFiber, wakeable) { - var retryLane = NoLane; // Default + } +} - var retryCache; +function flushRenderPhaseStrictModeWarningsInDEV() { + { + ReactStrictModeWarnings.flushLegacyContextWarning(); + ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings(); + } +} - switch (boundaryFiber.tag) { - case SuspenseComponent: - retryCache = boundaryFiber.stateNode; - var suspenseState = boundaryFiber.memoizedState; +function recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, parentFiber, isInStrictMode) { + if ((parentFiber.subtreeFlags & (PlacementDEV | Visibility)) === NoFlags$1) { + // Parent's descendants have already had effects double invoked. + // Early exit to avoid unnecessary tree traversal. + return; + } - if (suspenseState !== null) { - retryLane = suspenseState.retryLane; - } + var child = parentFiber.child; - break; + while (child !== null) { + doubleInvokeEffectsInDEVIfNecessary(root, child, isInStrictMode); + child = child.sibling; + } +} // Unconditionally disconnects and connects passive and layout effects. - case SuspenseListComponent: - retryCache = boundaryFiber.stateNode; - break; - case OffscreenComponent: { - var instance = boundaryFiber.stateNode; - retryCache = instance._retryCache; - break; - } +function doubleInvokeEffectsOnFiber(root, fiber) { + var shouldDoubleInvokePassiveEffects = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true; + disappearLayoutEffects(fiber); - default: - throw new Error( - "Pinged unknown suspense boundary type. " + - "This is probably a bug in React." - ); - } + if (shouldDoubleInvokePassiveEffects) { + disconnectPassiveEffect(fiber); + } - if (retryCache !== null) { - // The wakeable resolved, so we no longer need to memoize, because it will - // never be thrown again. - retryCache.delete(wakeable); - } + reappearLayoutEffects(root, fiber.alternate, fiber, false); - retryTimedOutBoundary(boundaryFiber, retryLane); - } - function throwIfInfiniteUpdateLoopDetected() { - if (nestedUpdateCount > NESTED_UPDATE_LIMIT) { - nestedUpdateCount = 0; - nestedPassiveUpdateCount = 0; - rootWithNestedUpdates = null; - rootWithPassiveNestedUpdates = null; - - if (enableInfiniteRenderLoopDetection) { - if (executionContext & RenderContext && workInProgressRoot !== null) { - // We're in the render phase. Disable the concurrent error recovery - // mechanism to ensure that the error we're about to throw gets handled. - // We need it to trigger the nearest error boundary so that the infinite - // update loop is broken. - workInProgressRoot.errorRecoveryDisabledLanes = mergeLanes( - workInProgressRoot.errorRecoveryDisabledLanes, - workInProgressRootRenderLanes - ); - } - } + if (shouldDoubleInvokePassiveEffects) { + reconnectPassiveEffects(root, fiber, NoLanes, null, false); + } +} - throw new Error( - "Maximum update depth exceeded. This can happen when a component " + - "repeatedly calls setState inside componentWillUpdate or " + - "componentDidUpdate. React limits the number of nested updates to " + - "prevent infinite loops." - ); - } +function doubleInvokeEffectsInDEVIfNecessary(root, fiber, parentIsInStrictMode) { + var isStrictModeFiber = fiber.type === REACT_STRICT_MODE_TYPE; + var isInStrictMode = parentIsInStrictMode || isStrictModeFiber; // First case: the fiber **is not** of type OffscreenComponent. No + // special rules apply to double invoking effects. - { - if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = null; + if (fiber.tag !== OffscreenComponent) { + if (fiber.flags & PlacementDEV) { + setCurrentFiber(fiber); - error( - "Maximum update depth exceeded. This can happen when a component " + - "calls setState inside useEffect, but useEffect either doesn't " + - "have a dependency array, or one of the dependencies changes on " + - "every render." - ); - } + if (isInStrictMode) { + doubleInvokeEffectsOnFiber(root, fiber, (fiber.mode & NoStrictPassiveEffectsMode) === NoMode); } + + resetCurrentFiber(); + } else { + recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, fiber, isInStrictMode); } - function flushRenderPhaseStrictModeWarningsInDEV() { - { - ReactStrictModeWarnings.flushLegacyContextWarning(); - ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings(); - } - } - - function recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - parentFiber, - isInStrictMode - ) { - if ( - (parentFiber.subtreeFlags & (PlacementDEV | Visibility)) === - NoFlags$1 - ) { - // Parent's descendants have already had effects double invoked. - // Early exit to avoid unnecessary tree traversal. - return; - } + return; + } // Second case: the fiber **is** of type OffscreenComponent. + // This branch contains cases specific to Offscreen. - var child = parentFiber.child; - while (child !== null) { - doubleInvokeEffectsInDEVIfNecessary(root, child, isInStrictMode); - child = child.sibling; - } - } // Unconditionally disconnects and connects passive and layout effects. + if (fiber.memoizedState === null) { + // Only consider Offscreen that is visible. + // TODO (Offscreen) Handle manual mode. + setCurrentFiber(fiber); - function doubleInvokeEffectsOnFiber(root, fiber) { - var shouldDoubleInvokePassiveEffects = - arguments.length > 2 && arguments[2] !== undefined - ? arguments[2] - : true; - disappearLayoutEffects(fiber); + if (isInStrictMode && fiber.flags & Visibility) { + // Double invoke effects on Offscreen's subtree only + // if it is visible and its visibility has changed. + doubleInvokeEffectsOnFiber(root, fiber); + } else if (fiber.subtreeFlags & PlacementDEV) { + // Something in the subtree could have been suspended. + // We need to continue traversal and find newly inserted fibers. + recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, fiber, isInStrictMode); + } - if (shouldDoubleInvokePassiveEffects) { - disconnectPassiveEffect(fiber); - } + resetCurrentFiber(); + } +} - reappearLayoutEffects(root, fiber.alternate, fiber, false); +function commitDoubleInvokeEffectsInDEV(root, hasPassiveEffects) { + { + if (useModernStrictMode && (root.tag !== LegacyRoot)) { + var doubleInvokeEffects = true; - if (shouldDoubleInvokePassiveEffects) { - reconnectPassiveEffects(root, fiber, NoLanes, null, false); + if ((root.tag === ConcurrentRoot) && !(root.current.mode & (StrictLegacyMode | StrictEffectsMode))) { + doubleInvokeEffects = false; } + + recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, root.current, doubleInvokeEffects); + } else { + legacyCommitDoubleInvokeEffectsInDEV(root.current, hasPassiveEffects); } + } +} - function doubleInvokeEffectsInDEVIfNecessary( - root, - fiber, - parentIsInStrictMode - ) { - var isStrictModeFiber = fiber.type === REACT_STRICT_MODE_TYPE; - var isInStrictMode = parentIsInStrictMode || isStrictModeFiber; // First case: the fiber **is not** of type OffscreenComponent. No - // special rules apply to double invoking effects. +function legacyCommitDoubleInvokeEffectsInDEV(fiber, hasPassiveEffects) { + // TODO (StrictEffects) Should we set a marker on the root if it contains strict effects + // so we don't traverse unnecessarily? similar to subtreeFlags but just at the root level. + // Maybe not a big deal since this is DEV only behavior. + setCurrentFiber(fiber); + invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectUnmountInDEV); - if (fiber.tag !== OffscreenComponent) { - if (fiber.flags & PlacementDEV) { - setCurrentFiber(fiber); + if (hasPassiveEffects) { + invokeEffectsInDev(fiber, MountPassiveDev, invokePassiveEffectUnmountInDEV); + } - if (isInStrictMode) { - doubleInvokeEffectsOnFiber( - root, - fiber, - (fiber.mode & NoStrictPassiveEffectsMode) === NoMode - ); - } + invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectMountInDEV); - resetCurrentFiber(); - } else { - recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - fiber, - isInStrictMode - ); - } + if (hasPassiveEffects) { + invokeEffectsInDev(fiber, MountPassiveDev, invokePassiveEffectMountInDEV); + } - return; - } // Second case: the fiber **is** of type OffscreenComponent. - // This branch contains cases specific to Offscreen. + resetCurrentFiber(); +} - if (fiber.memoizedState === null) { - // Only consider Offscreen that is visible. - // TODO (Offscreen) Handle manual mode. - setCurrentFiber(fiber); +function invokeEffectsInDev(firstChild, fiberFlags, invokeEffectFn) { + var current = firstChild; + var subtreeRoot = null; - if (isInStrictMode && fiber.flags & Visibility) { - // Double invoke effects on Offscreen's subtree only - // if it is visible and its visibility has changed. - doubleInvokeEffectsOnFiber(root, fiber); - } else if (fiber.subtreeFlags & PlacementDEV) { - // Something in the subtree could have been suspended. - // We need to continue traversal and find newly inserted fibers. - recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - fiber, - isInStrictMode - ); - } + while (current != null) { + var primarySubtreeFlag = current.subtreeFlags & fiberFlags; - resetCurrentFiber(); + if (current !== subtreeRoot && current.child != null && primarySubtreeFlag !== NoFlags$1) { + current = current.child; + } else { + if ((current.flags & fiberFlags) !== NoFlags$1) { + invokeEffectFn(current); + } + + if (current.sibling !== null) { + current = current.sibling; + } else { + current = subtreeRoot = current.return; } } + } +} - function commitDoubleInvokeEffectsInDEV(root, hasPassiveEffects) { - { - if (useModernStrictMode && root.tag !== LegacyRoot) { - var doubleInvokeEffects = true; - - if ( - root.tag === ConcurrentRoot && - !(root.current.mode & (StrictLegacyMode | StrictEffectsMode)) - ) { - doubleInvokeEffects = false; - } +var didWarnStateUpdateForNotYetMountedComponent = null; +function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) { + { + if ((executionContext & RenderContext) !== NoContext) { + // We let the other warning about render phase updates deal with this one. + return; + } - recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - root.current, - doubleInvokeEffects - ); - } else { - legacyCommitDoubleInvokeEffectsInDEV(root.current, hasPassiveEffects); - } - } + if (!(fiber.mode & ConcurrentMode)) { + return; } - function legacyCommitDoubleInvokeEffectsInDEV(fiber, hasPassiveEffects) { - // TODO (StrictEffects) Should we set a marker on the root if it contains strict effects - // so we don't traverse unnecessarily? similar to subtreeFlags but just at the root level. - // Maybe not a big deal since this is DEV only behavior. - setCurrentFiber(fiber); - invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectUnmountInDEV); + var tag = fiber.tag; - if (hasPassiveEffects) { - invokeEffectsInDev( - fiber, - MountPassiveDev, - invokePassiveEffectUnmountInDEV - ); - } + if (tag !== HostRoot && tag !== ClassComponent && tag !== FunctionComponent && tag !== ForwardRef && tag !== MemoComponent && tag !== SimpleMemoComponent) { + // Only warn for user-defined components, not internal ones like Suspense. + return; + } // We show the whole stack but dedupe on the top component's name because + // the problematic code almost always lies inside that component. - invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectMountInDEV); - if (hasPassiveEffects) { - invokeEffectsInDev( - fiber, - MountPassiveDev, - invokePassiveEffectMountInDEV - ); - } + var componentName = getComponentNameFromFiber(fiber) || 'ReactComponent'; + + if (didWarnStateUpdateForNotYetMountedComponent !== null) { + if (didWarnStateUpdateForNotYetMountedComponent.has(componentName)) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - resetCurrentFiber(); - } - function invokeEffectsInDev(firstChild, fiberFlags, invokeEffectFn) { - var current = firstChild; - var subtreeRoot = null; + didWarnStateUpdateForNotYetMountedComponent.add(componentName); + } else { + didWarnStateUpdateForNotYetMountedComponent = new Set([componentName]); + } - while (current != null) { - var primarySubtreeFlag = current.subtreeFlags & fiberFlags; + var previousFiber = current; - if ( - current !== subtreeRoot && - current.child != null && - primarySubtreeFlag !== NoFlags$1 - ) { - current = current.child; - } else { - if ((current.flags & fiberFlags) !== NoFlags$1) { - invokeEffectFn(current); - } + try { + setCurrentFiber(fiber); - if (current.sibling !== null) { - current = current.sibling; - } else { - current = subtreeRoot = current.return; - } - } + error("Can't perform a React state update on a component that hasn't mounted yet. " + 'This indicates that you have a side-effect in your render function that ' + 'asynchronously later calls tries to update the component. Move this work to ' + 'useEffect instead.'); + } finally { + if (previousFiber) { + setCurrentFiber(fiber); + } else { + resetCurrentFiber(); } } + } +} +var didWarnAboutUpdateInRender = false; +var didWarnAboutUpdateInRenderForAnotherComponent; - var didWarnStateUpdateForNotYetMountedComponent = null; - function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) { - { - if ((executionContext & RenderContext) !== NoContext) { - // We let the other warning about render phase updates deal with this one. - return; - } - - if (!(fiber.mode & ConcurrentMode)) { - return; - } +{ + didWarnAboutUpdateInRenderForAnotherComponent = new Set(); +} - var tag = fiber.tag; +function warnAboutRenderPhaseUpdatesInDEV(fiber) { + { + if (isRendering) { + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + var renderingComponentName = workInProgress && getComponentNameFromFiber(workInProgress) || 'Unknown'; // Dedupe by the rendering component because it's the one that needs to be fixed. - if ( - tag !== HostRoot && - tag !== ClassComponent && - tag !== FunctionComponent && - tag !== ForwardRef && - tag !== MemoComponent && - tag !== SimpleMemoComponent - ) { - // Only warn for user-defined components, not internal ones like Suspense. - return; - } // We show the whole stack but dedupe on the top component's name because - // the problematic code almost always lies inside that component. + var dedupeKey = renderingComponentName; - var componentName = - getComponentNameFromFiber(fiber) || "ReactComponent"; + if (!didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey)) { + didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey); + var setStateComponentName = getComponentNameFromFiber(fiber) || 'Unknown'; - if (didWarnStateUpdateForNotYetMountedComponent !== null) { - if (didWarnStateUpdateForNotYetMountedComponent.has(componentName)) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + error('Cannot update a component (`%s`) while rendering a ' + 'different component (`%s`). To locate the bad setState() call inside `%s`, ' + 'follow the stack trace as described in https://react.dev/link/setstate-in-render', setStateComponentName, renderingComponentName, renderingComponentName); + } - didWarnStateUpdateForNotYetMountedComponent.add(componentName); - } else { - didWarnStateUpdateForNotYetMountedComponent = new Set([ - componentName - ]); - } + break; + } - var previousFiber = current; + case ClassComponent: + { + if (!didWarnAboutUpdateInRender) { + error('Cannot update during an existing state transition (such as ' + 'within `render`). Render methods should be a pure ' + 'function of props and state.'); - try { - setCurrentFiber(fiber); + didWarnAboutUpdateInRender = true; + } - error( - "Can't perform a React state update on a component that hasn't mounted yet. " + - "This indicates that you have a side-effect in your render function that " + - "asynchronously later calls tries to update the component. Move this work to " + - "useEffect instead." - ); - } finally { - if (previousFiber) { - setCurrentFiber(fiber); - } else { - resetCurrentFiber(); + break; } - } } } - var didWarnAboutUpdateInRender = false; - var didWarnAboutUpdateInRenderForAnotherComponent; + } +} - { - didWarnAboutUpdateInRenderForAnotherComponent = new Set(); +function restorePendingUpdaters(root, lanes) { + { + if (isDevToolsPresent) { + var memoizedUpdaters = root.memoizedUpdaters; + memoizedUpdaters.forEach(function (schedulingFiber) { + addFiberToLanesMap(root, schedulingFiber, lanes); + }); // This function intentionally does not clear memoized updaters. + // Those may still be relevant to the current commit + // and a future one (e.g. Suspense). } + } +} +var fakeActCallbackNode = {}; // $FlowFixMe[missing-local-annot] - function warnAboutRenderPhaseUpdatesInDEV(fiber) { - { - if (isRendering) { - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - var renderingComponentName = - (workInProgress && getComponentNameFromFiber(workInProgress)) || - "Unknown"; // Dedupe by the rendering component because it's the one that needs to be fixed. - - var dedupeKey = renderingComponentName; - - if ( - !didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey) - ) { - didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey); - var setStateComponentName = - getComponentNameFromFiber(fiber) || "Unknown"; - - error( - "Cannot update a component (`%s`) while rendering a " + - "different component (`%s`). To locate the bad setState() call inside `%s`, " + - "follow the stack trace as described in https://react.dev/link/setstate-in-render", - setStateComponentName, - renderingComponentName, - renderingComponentName - ); - } +function scheduleCallback(priorityLevel, callback) { + { + // If we're currently inside an `act` scope, bypass Scheduler and push to + // the `act` queue instead. + var actQueue = ReactSharedInternals.actQueue; - break; - } + if (actQueue !== null) { + actQueue.push(callback); + return fakeActCallbackNode; + } else { + return scheduleCallback$3(priorityLevel, callback); + } + } +} - case ClassComponent: { - if (!didWarnAboutUpdateInRender) { - error( - "Cannot update during an existing state transition (such as " + - "within `render`). Render methods should be a pure " + - "function of props and state." - ); +function shouldForceFlushFallbacksInDEV() { + // Never force flush in production. This function should get stripped out. + return ReactSharedInternals.actQueue !== null; +} - didWarnAboutUpdateInRender = true; - } +function warnIfUpdatesNotWrappedWithActDEV(fiber) { + { + if (fiber.mode & ConcurrentMode) { + if (!isConcurrentActEnvironment()) { + // Not in an act environment. No need to warn. + return; + } + } else { + // Legacy mode has additional cases where we suppress a warning. + if (!isLegacyActEnvironment()) { + // Not in an act environment. No need to warn. + return; + } - break; - } - } - } + if (executionContext !== NoContext) { + // Legacy mode doesn't warn if the update is batched, i.e. + // batchedUpdates or flushSync. + return; } - } - function restorePendingUpdaters(root, lanes) { - { - if (isDevToolsPresent) { - var memoizedUpdaters = root.memoizedUpdaters; - memoizedUpdaters.forEach(function (schedulingFiber) { - addFiberToLanesMap(root, schedulingFiber, lanes); - }); // This function intentionally does not clear memoized updaters. - // Those may still be relevant to the current commit - // and a future one (e.g. Suspense). - } + if (fiber.tag !== FunctionComponent && fiber.tag !== ForwardRef && fiber.tag !== SimpleMemoComponent) { + // For backwards compatibility with pre-hooks code, legacy mode only + // warns for updates that originate from a hook. + return; } } - var fakeActCallbackNode = {}; // $FlowFixMe[missing-local-annot] - function scheduleCallback(priorityLevel, callback) { - { - // If we're currently inside an `act` scope, bypass Scheduler and push to - // the `act` queue instead. - var actQueue = ReactSharedInternals.actQueue; + if (ReactSharedInternals.actQueue === null) { + var previousFiber = current; + + try { + setCurrentFiber(fiber); - if (actQueue !== null) { - actQueue.push(callback); - return fakeActCallbackNode; + error('An update to %s inside a test was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be ' + 'wrapped into act(...):\n\n' + 'act(() => {\n' + ' /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://react.dev/link/wrap-tests-with-act', getComponentNameFromFiber(fiber)); + } finally { + if (previousFiber) { + setCurrentFiber(fiber); } else { - return scheduleCallback$3(priorityLevel, callback); + resetCurrentFiber(); } } } + } +} - function shouldForceFlushFallbacksInDEV() { - // Never force flush in production. This function should get stripped out. - return ReactSharedInternals.actQueue !== null; +function warnIfSuspenseResolutionNotWrappedWithActDEV(root) { + { + if ((root.tag !== LegacyRoot) && isConcurrentActEnvironment() && ReactSharedInternals.actQueue === null) { + error('A suspended resource finished loading inside a test, but the event ' + 'was not wrapped in act(...).\n\n' + 'When testing, code that resolves suspended data should be wrapped ' + 'into act(...):\n\n' + 'act(() => {\n' + ' /* finish loading suspended data */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://react.dev/link/wrap-tests-with-act'); } + } +} - function warnIfUpdatesNotWrappedWithActDEV(fiber) { - { - if (fiber.mode & ConcurrentMode) { - if (!isConcurrentActEnvironment()) { - // Not in an act environment. No need to warn. - return; - } - } else { - // Legacy mode has additional cases where we suppress a warning. - if (!isLegacyActEnvironment()) { - // Not in an act environment. No need to warn. - return; - } - - if (executionContext !== NoContext) { - // Legacy mode doesn't warn if the update is batched, i.e. - // batchedUpdates or flushSync. - return; - } - - if ( - fiber.tag !== FunctionComponent && - fiber.tag !== ForwardRef && - fiber.tag !== SimpleMemoComponent - ) { - // For backwards compatibility with pre-hooks code, legacy mode only - // warns for updates that originate from a hook. - return; - } - } +function setIsRunningInsertionEffect(isRunning) { + { + isRunningInsertionEffect = isRunning; + } +} - if (ReactSharedInternals.actQueue === null) { - var previousFiber = current; +/* eslint-disable react-internal/prod-error-codes */ +// Used by React Refresh runtime through DevTools Global Hook. - try { - setCurrentFiber(fiber); - - error( - "An update to %s inside a test was not wrapped in act(...).\n\n" + - "When testing, code that causes React state updates should be " + - "wrapped into act(...):\n\n" + - "act(() => {\n" + - " /* fire events that update state */\n" + - "});\n" + - "/* assert on the output */\n\n" + - "This ensures that you're testing the behavior the user would see " + - "in the browser." + - " Learn more at https://react.dev/link/wrap-tests-with-act", - getComponentNameFromFiber(fiber) - ); - } finally { - if (previousFiber) { - setCurrentFiber(fiber); - } else { - resetCurrentFiber(); - } - } - } - } +var resolveFamily = null; +var failedBoundaries = null; +var setRefreshHandler = function (handler) { + { + resolveFamily = handler; + } +}; +function resolveFunctionForHotReloading(type) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return type; } - function warnIfSuspenseResolutionNotWrappedWithActDEV(root) { - { - if ( - root.tag !== LegacyRoot && - isConcurrentActEnvironment() && - ReactSharedInternals.actQueue === null - ) { - error( - "A suspended resource finished loading inside a test, but the event " + - "was not wrapped in act(...).\n\n" + - "When testing, code that resolves suspended data should be wrapped " + - "into act(...):\n\n" + - "act(() => {\n" + - " /* finish loading suspended data */\n" + - "});\n" + - "/* assert on the output */\n\n" + - "This ensures that you're testing the behavior the user would see " + - "in the browser." + - " Learn more at https://react.dev/link/wrap-tests-with-act" - ); - } - } - } - - function setIsRunningInsertionEffect(isRunning) { - { - isRunningInsertionEffect = isRunning; - } - } + var family = resolveFamily(type); - /* eslint-disable react-internal/prod-error-codes */ - // Used by React Refresh runtime through DevTools Global Hook. + if (family === undefined) { + return type; + } // Use the latest known implementation. - var resolveFamily = null; - var failedBoundaries = null; - var setRefreshHandler = function (handler) { - { - resolveFamily = handler; - } - }; - function resolveFunctionForHotReloading(type) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return type; - } - var family = resolveFamily(type); + return family.current; + } +} +function resolveClassForHotReloading(type) { + // No implementation differences. + return resolveFunctionForHotReloading(type); +} +function resolveForwardRefForHotReloading(type) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return type; + } + + var family = resolveFamily(type); + + if (family === undefined) { + // Check if we're dealing with a real forwardRef. Don't want to crash early. + if (type !== null && type !== undefined && typeof type.render === 'function') { + // ForwardRef is special because its resolved .type is an object, + // but it's possible that we only have its inner render function in the map. + // If that inner render function is different, we'll build a new forwardRef type. + var currentRender = resolveFunctionForHotReloading(type.render); + + if (type.render !== currentRender) { + var syntheticType = { + $$typeof: REACT_FORWARD_REF_TYPE, + render: currentRender + }; - if (family === undefined) { - return type; - } // Use the latest known implementation. + if (type.displayName !== undefined) { + syntheticType.displayName = type.displayName; + } - return family.current; + return syntheticType; + } } - } - function resolveClassForHotReloading(type) { - // No implementation differences. - return resolveFunctionForHotReloading(type); - } - function resolveForwardRefForHotReloading(type) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return type; - } - - var family = resolveFamily(type); - - if (family === undefined) { - // Check if we're dealing with a real forwardRef. Don't want to crash early. - if ( - type !== null && - type !== undefined && - typeof type.render === "function" - ) { - // ForwardRef is special because its resolved .type is an object, - // but it's possible that we only have its inner render function in the map. - // If that inner render function is different, we'll build a new forwardRef type. - var currentRender = resolveFunctionForHotReloading(type.render); - - if (type.render !== currentRender) { - var syntheticType = { - $$typeof: REACT_FORWARD_REF_TYPE, - render: currentRender - }; - - if (type.displayName !== undefined) { - syntheticType.displayName = type.displayName; - } - return syntheticType; - } - } + return type; + } // Use the latest known implementation. - return type; - } // Use the latest known implementation. - return family.current; - } + return family.current; + } +} +function isCompatibleFamilyForHotReloading(fiber, element) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return false; } - function isCompatibleFamilyForHotReloading(fiber, element) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return false; - } - var prevType = fiber.elementType; - var nextType = element.type; // If we got here, we know types aren't === equal. + var prevType = fiber.elementType; + var nextType = element.type; // If we got here, we know types aren't === equal. - var needsCompareFamilies = false; - var $$typeofNextType = - typeof nextType === "object" && nextType !== null - ? nextType.$$typeof - : null; + var needsCompareFamilies = false; + var $$typeofNextType = typeof nextType === 'object' && nextType !== null ? nextType.$$typeof : null; - switch (fiber.tag) { - case ClassComponent: { - if (typeof nextType === "function") { - needsCompareFamilies = true; - } - - break; + switch (fiber.tag) { + case ClassComponent: + { + if (typeof nextType === 'function') { + needsCompareFamilies = true; } - case FunctionComponent: { - if (typeof nextType === "function") { - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - // We don't know the inner type yet. - // We're going to assume that the lazy inner type is stable, - // and so it is sufficient to avoid reconciling it away. - // We're not going to unwrap or actually use the new lazy type. - needsCompareFamilies = true; - } + break; + } - break; + case FunctionComponent: + { + if (typeof nextType === 'function') { + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + // We don't know the inner type yet. + // We're going to assume that the lazy inner type is stable, + // and so it is sufficient to avoid reconciling it away. + // We're not going to unwrap or actually use the new lazy type. + needsCompareFamilies = true; } - case ForwardRef: { - if ($$typeofNextType === REACT_FORWARD_REF_TYPE) { - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - needsCompareFamilies = true; - } + break; + } - break; + case ForwardRef: + { + if ($$typeofNextType === REACT_FORWARD_REF_TYPE) { + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + needsCompareFamilies = true; } - case MemoComponent: - case SimpleMemoComponent: { - if ($$typeofNextType === REACT_MEMO_TYPE) { - // TODO: if it was but can no longer be simple, - // we shouldn't set this. - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - needsCompareFamilies = true; - } + break; + } - break; + case MemoComponent: + case SimpleMemoComponent: + { + if ($$typeofNextType === REACT_MEMO_TYPE) { + // TODO: if it was but can no longer be simple, + // we shouldn't set this. + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + needsCompareFamilies = true; } - default: - return false; - } // Check if both types have a family and it's the same one. - - if (needsCompareFamilies) { - // Note: memo() and forwardRef() we'll compare outer rather than inner type. - // This means both of them need to be registered to preserve state. - // If we unwrapped and compared the inner types for wrappers instead, - // then we would risk falsely saying two separate memo(Foo) - // calls are equivalent because they wrap the same Foo function. - var prevFamily = resolveFamily(prevType); // $FlowFixMe[not-a-function] found when upgrading Flow - - if ( - prevFamily !== undefined && - prevFamily === resolveFamily(nextType) - ) { - return true; - } + break; } + default: return false; - } - } - function markFailedErrorBoundaryForHotReloading(fiber) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return; - } + } // Check if both types have a family and it's the same one. - if (typeof WeakSet !== "function") { - return; - } - if (failedBoundaries === null) { - failedBoundaries = new WeakSet(); - } + if (needsCompareFamilies) { + // Note: memo() and forwardRef() we'll compare outer rather than inner type. + // This means both of them need to be registered to preserve state. + // If we unwrapped and compared the inner types for wrappers instead, + // then we would risk falsely saying two separate memo(Foo) + // calls are equivalent because they wrap the same Foo function. + var prevFamily = resolveFamily(prevType); // $FlowFixMe[not-a-function] found when upgrading Flow - failedBoundaries.add(fiber); + if (prevFamily !== undefined && prevFamily === resolveFamily(nextType)) { + return true; } } - var scheduleRefresh = function (root, update) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return; - } - var staleFamilies = update.staleFamilies, - updatedFamilies = update.updatedFamilies; - flushPassiveEffects(); - scheduleFibersWithFamiliesRecursively( - root.current, - updatedFamilies, - staleFamilies - ); - flushSyncWork(); - } - }; - var scheduleRoot = function (root, element) { - { - if (root.context !== emptyContextObject) { - // Super edge case: root has a legacy _renderSubtree context - // but we don't know the parentComponent so we can't pass it. - // Just ignore. We'll delete this with _renderSubtree code path later. - return; - } + return false; + } +} +function markFailedErrorBoundaryForHotReloading(fiber) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return; + } - updateContainerSync(element, root, null, null); - flushSyncWork(); - } - }; + if (typeof WeakSet !== 'function') { + return; + } - function scheduleFibersWithFamiliesRecursively( - fiber, - updatedFamilies, - staleFamilies - ) { - { - var alternate = fiber.alternate, - child = fiber.child, - sibling = fiber.sibling, - tag = fiber.tag, - type = fiber.type; - var candidateType = null; - - switch (tag) { - case FunctionComponent: - case SimpleMemoComponent: - case ClassComponent: - candidateType = type; - break; + if (failedBoundaries === null) { + failedBoundaries = new WeakSet(); + } - case ForwardRef: - candidateType = type.render; - break; - } + failedBoundaries.add(fiber); + } +} +var scheduleRefresh = function (root, update) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return; + } + + var staleFamilies = update.staleFamilies, + updatedFamilies = update.updatedFamilies; + flushPassiveEffects(); + scheduleFibersWithFamiliesRecursively(root.current, updatedFamilies, staleFamilies); + flushSyncWork(); + } +}; +var scheduleRoot = function (root, element) { + { + if (root.context !== emptyContextObject) { + // Super edge case: root has a legacy _renderSubtree context + // but we don't know the parentComponent so we can't pass it. + // Just ignore. We'll delete this with _renderSubtree code path later. + return; + } + + updateContainerSync(element, root, null, null); + flushSyncWork(); + } +}; + +function scheduleFibersWithFamiliesRecursively(fiber, updatedFamilies, staleFamilies) { + { + var alternate = fiber.alternate, + child = fiber.child, + sibling = fiber.sibling, + tag = fiber.tag, + type = fiber.type; + var candidateType = null; - if (resolveFamily === null) { - throw new Error( - "Expected resolveFamily to be set during hot reload." - ); - } + switch (tag) { + case FunctionComponent: + case SimpleMemoComponent: + case ClassComponent: + candidateType = type; + break; - var needsRender = false; - var needsRemount = false; + case ForwardRef: + candidateType = type.render; + break; + } - if (candidateType !== null) { - var family = resolveFamily(candidateType); + if (resolveFamily === null) { + throw new Error('Expected resolveFamily to be set during hot reload.'); + } - if (family !== undefined) { - if (staleFamilies.has(family)) { - needsRemount = true; - } else if (updatedFamilies.has(family)) { - if (tag === ClassComponent) { - needsRemount = true; - } else { - needsRender = true; - } - } - } - } + var needsRender = false; + var needsRemount = false; - if (failedBoundaries !== null) { - if ( - failedBoundaries.has(fiber) || // $FlowFixMe[incompatible-use] found when upgrading Flow - (alternate !== null && failedBoundaries.has(alternate)) - ) { + if (candidateType !== null) { + var family = resolveFamily(candidateType); + + if (family !== undefined) { + if (staleFamilies.has(family)) { + needsRemount = true; + } else if (updatedFamilies.has(family)) { + if (tag === ClassComponent) { needsRemount = true; + } else { + needsRender = true; } } + } + } - if (needsRemount) { - fiber._debugNeedsRemount = true; - } - - if (needsRemount || needsRender) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (failedBoundaries !== null) { + if (failedBoundaries.has(fiber) || // $FlowFixMe[incompatible-use] found when upgrading Flow + alternate !== null && failedBoundaries.has(alternate)) { + needsRemount = true; + } + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } + if (needsRemount) { + fiber._debugNeedsRemount = true; + } - if (child !== null && !needsRemount) { - scheduleFibersWithFamiliesRecursively( - child, - updatedFamilies, - staleFamilies - ); - } + if (needsRemount || needsRender) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (sibling !== null) { - scheduleFibersWithFamiliesRecursively( - sibling, - updatedFamilies, - staleFamilies - ); - } + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); } } - var findHostInstancesForRefresh = function (root, families) { - { - var hostInstances = new Set(); - var types = new Set( - families.map(function (family) { - return family.current; - }) - ); - findHostInstancesForMatchingFibersRecursively( - root.current, - types, - hostInstances - ); - return hostInstances; - } - }; + if (child !== null && !needsRemount) { + scheduleFibersWithFamiliesRecursively(child, updatedFamilies, staleFamilies); + } - function findHostInstancesForMatchingFibersRecursively( - fiber, - types, - hostInstances - ) { - { - var child = fiber.child, - sibling = fiber.sibling, - tag = fiber.tag, - type = fiber.type; - var candidateType = null; - - switch (tag) { - case FunctionComponent: - case SimpleMemoComponent: - case ClassComponent: - candidateType = type; - break; + if (sibling !== null) { + scheduleFibersWithFamiliesRecursively(sibling, updatedFamilies, staleFamilies); + } + } +} - case ForwardRef: - candidateType = type.render; - break; - } +var findHostInstancesForRefresh = function (root, families) { + { + var hostInstances = new Set(); + var types = new Set(families.map(function (family) { + return family.current; + })); + findHostInstancesForMatchingFibersRecursively(root.current, types, hostInstances); + return hostInstances; + } +}; + +function findHostInstancesForMatchingFibersRecursively(fiber, types, hostInstances) { + { + var child = fiber.child, + sibling = fiber.sibling, + tag = fiber.tag, + type = fiber.type; + var candidateType = null; - var didMatch = false; + switch (tag) { + case FunctionComponent: + case SimpleMemoComponent: + case ClassComponent: + candidateType = type; + break; - if (candidateType !== null) { - if (types.has(candidateType)) { - didMatch = true; - } - } + case ForwardRef: + candidateType = type.render; + break; + } - if (didMatch) { - // We have a match. This only drills down to the closest host components. - // There's no need to search deeper because for the purpose of giving - // visual feedback, "flashing" outermost parent rectangles is sufficient. - findHostInstancesForFiberShallowly(fiber, hostInstances); - } else { - // If there's no match, maybe there will be one further down in the child tree. - if (child !== null) { - findHostInstancesForMatchingFibersRecursively( - child, - types, - hostInstances - ); - } - } + var didMatch = false; - if (sibling !== null) { - findHostInstancesForMatchingFibersRecursively( - sibling, - types, - hostInstances - ); - } + if (candidateType !== null) { + if (types.has(candidateType)) { + didMatch = true; } } - function findHostInstancesForFiberShallowly(fiber, hostInstances) { - { - var foundHostInstances = findChildHostInstancesForFiberShallowly( - fiber, - hostInstances - ); + if (didMatch) { + // We have a match. This only drills down to the closest host components. + // There's no need to search deeper because for the purpose of giving + // visual feedback, "flashing" outermost parent rectangles is sufficient. + findHostInstancesForFiberShallowly(fiber, hostInstances); + } else { + // If there's no match, maybe there will be one further down in the child tree. + if (child !== null) { + findHostInstancesForMatchingFibersRecursively(child, types, hostInstances); + } + } - if (foundHostInstances) { - return; - } // If we didn't find any host children, fallback to closest host parent. + if (sibling !== null) { + findHostInstancesForMatchingFibersRecursively(sibling, types, hostInstances); + } + } +} - var node = fiber; +function findHostInstancesForFiberShallowly(fiber, hostInstances) { + { + var foundHostInstances = findChildHostInstancesForFiberShallowly(fiber, hostInstances); - while (true) { - switch (node.tag) { - case HostSingleton: - case HostComponent: - hostInstances.add(node.stateNode); - return; + if (foundHostInstances) { + return; + } // If we didn't find any host children, fallback to closest host parent. - case HostPortal: - hostInstances.add(node.stateNode.containerInfo); - return; - case HostRoot: - hostInstances.add(node.stateNode.containerInfo); - return; - } + var node = fiber; - if (node.return === null) { - throw new Error("Expected to reach root first."); - } + while (true) { + switch (node.tag) { + case HostSingleton: + case HostComponent: + hostInstances.add(node.stateNode); + return; - node = node.return; - } + case HostPortal: + hostInstances.add(node.stateNode.containerInfo); + return; + + case HostRoot: + hostInstances.add(node.stateNode.containerInfo); + return; } - } - function findChildHostInstancesForFiberShallowly(fiber, hostInstances) { - { - var node = fiber; - var foundHostInstances = false; - - while (true) { - if ( - node.tag === HostComponent || - node.tag === HostHoistable || - false - ) { - // We got a match. - foundHostInstances = true; - hostInstances.add(node.stateNode); // There may still be more, so keep searching. - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + if (node.return === null) { + throw new Error('Expected to reach root first.'); + } - if (node === fiber) { - return foundHostInstances; - } + node = node.return; + } + } +} - while (node.sibling === null) { - if (node.return === null || node.return === fiber) { - return foundHostInstances; - } +function findChildHostInstancesForFiberShallowly(fiber, hostInstances) { + { + var node = fiber; + var foundHostInstances = false; - node = node.return; - } + while (true) { + if (node.tag === HostComponent || node.tag === HostHoistable || (false)) { + // We got a match. + foundHostInstances = true; + hostInstances.add(node.stateNode); // There may still be more, so keep searching. + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } + + if (node === fiber) { + return foundHostInstances; + } - node.sibling.return = node.return; - node = node.sibling; + while (node.sibling === null) { + if (node.return === null || node.return === fiber) { + return foundHostInstances; } + + node = node.return; } - return false; + node.sibling.return = node.return; + node = node.sibling; } + } - var hasBadMapPolyfill; - - { - hasBadMapPolyfill = false; + return false; +} - try { - var nonExtensibleObject = Object.preventExtensions({}); - /* eslint-disable no-new */ - - new Map([[nonExtensibleObject, null]]); - new Set([nonExtensibleObject]); - /* eslint-enable no-new */ - } catch (e) { - // TODO: Consider warning about bad polyfills - hasBadMapPolyfill = true; - } - } - - function FiberNode(tag, pendingProps, key, mode) { - // Instance - this.tag = tag; - this.key = key; - this.elementType = null; - this.type = null; - this.stateNode = null; // Fiber - - this.return = null; - this.child = null; - this.sibling = null; - this.index = 0; - this.ref = null; - this.refCleanup = null; - this.pendingProps = pendingProps; - this.memoizedProps = null; - this.updateQueue = null; - this.memoizedState = null; - this.dependencies = null; - this.mode = mode; // Effects - - this.flags = NoFlags$1; - this.subtreeFlags = NoFlags$1; - this.deletions = null; - this.lanes = NoLanes; - this.childLanes = NoLanes; - this.alternate = null; +var hasBadMapPolyfill; - { - // Note: The following is done to avoid a v8 performance cliff. - // - // Initializing the fields below to smis and later updating them with - // double values will cause Fibers to end up having separate shapes. - // This behavior/bug has something to do with Object.preventExtension(). - // Fortunately this only impacts DEV builds. - // Unfortunately it makes React unusably slow for some applications. - // To work around this, initialize the fields below with doubles. - // - // Learn more about this here: - // https://github.com/facebook/react/issues/14365 - // https://bugs.chromium.org/p/v8/issues/detail?id=8538 - this.actualDuration = Number.NaN; - this.actualStartTime = Number.NaN; - this.selfBaseDuration = Number.NaN; - this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization. - // This won't trigger the performance cliff mentioned above, - // and it simplifies other profiler code (including DevTools). - - this.actualDuration = 0; - this.actualStartTime = -1; - this.selfBaseDuration = 0; - this.treeBaseDuration = 0; - } +{ + hasBadMapPolyfill = false; - { - // This isn't directly used but is handy for debugging internals: - this._debugInfo = null; - this._debugOwner = null; - this._debugNeedsRemount = false; - this._debugHookTypes = null; - - if ( - !hasBadMapPolyfill && - typeof Object.preventExtensions === "function" - ) { - Object.preventExtensions(this); - } - } - } // This is a constructor function, rather than a POJO constructor, still - // please ensure we do the following: - // 1) Nobody should add any instance methods on this. Instance methods can be - // more difficult to predict when they get optimized and they are almost - // never inlined properly in static compilers. - // 2) Nobody should rely on `instanceof Fiber` for type testing. We should - // always know when it is a fiber. - // 3) We might want to experiment with using numeric keys since they are easier - // to optimize in a non-JIT environment. - // 4) We can easily go from a constructor to a createFiber object literal if that - // is faster. - // 5) It should be easy to port this to a C struct and keep a C implementation - // compatible. - - function createFiber(tag, pendingProps, key, mode) { - // $FlowFixMe[invalid-constructor]: the shapes are exact here but Flow doesn't like constructors - return new FiberNode(tag, pendingProps, key, mode); - } - - function shouldConstruct(Component) { - var prototype = Component.prototype; - return !!(prototype && prototype.isReactComponent); - } - - function isSimpleFunctionComponent(type) { - return ( - typeof type === "function" && - !shouldConstruct(type) && - type.defaultProps === undefined - ); - } - function isFunctionClassComponent(type) { - return shouldConstruct(type); - } // This is used to create an alternate fiber to do work on. - - function createWorkInProgress(current, pendingProps) { - var workInProgress = current.alternate; - - if (workInProgress === null) { - // We use a double buffering pooling technique because we know that we'll - // only ever need at most two versions of a tree. We pool the "other" unused - // node that we're free to reuse. This is lazily created to avoid allocating - // extra objects for things that are never updated. It also allow us to - // reclaim the extra memory if needed. - workInProgress = createFiber( - current.tag, - pendingProps, - current.key, - current.mode - ); - workInProgress.elementType = current.elementType; - workInProgress.type = current.type; - workInProgress.stateNode = current.stateNode; + try { + var nonExtensibleObject = Object.preventExtensions({}); + /* eslint-disable no-new */ - { - // DEV-only fields - workInProgress._debugOwner = current._debugOwner; - workInProgress._debugHookTypes = current._debugHookTypes; - } + new Map([[nonExtensibleObject, null]]); + new Set([nonExtensibleObject]); + /* eslint-enable no-new */ + } catch (e) { + // TODO: Consider warning about bad polyfills + hasBadMapPolyfill = true; + } +} - workInProgress.alternate = current; - current.alternate = workInProgress; - } else { - workInProgress.pendingProps = pendingProps; // Needed because Blocks store data on type. +function FiberNode(tag, pendingProps, key, mode) { + // Instance + this.tag = tag; + this.key = key; + this.elementType = null; + this.type = null; + this.stateNode = null; // Fiber + + this.return = null; + this.child = null; + this.sibling = null; + this.index = 0; + this.ref = null; + this.refCleanup = null; + this.pendingProps = pendingProps; + this.memoizedProps = null; + this.updateQueue = null; + this.memoizedState = null; + this.dependencies = null; + this.mode = mode; // Effects + + this.flags = NoFlags$1; + this.subtreeFlags = NoFlags$1; + this.deletions = null; + this.lanes = NoLanes; + this.childLanes = NoLanes; + this.alternate = null; + + { + // Note: The following is done to avoid a v8 performance cliff. + // + // Initializing the fields below to smis and later updating them with + // double values will cause Fibers to end up having separate shapes. + // This behavior/bug has something to do with Object.preventExtension(). + // Fortunately this only impacts DEV builds. + // Unfortunately it makes React unusably slow for some applications. + // To work around this, initialize the fields below with doubles. + // + // Learn more about this here: + // https://github.com/facebook/react/issues/14365 + // https://bugs.chromium.org/p/v8/issues/detail?id=8538 + this.actualDuration = Number.NaN; + this.actualStartTime = Number.NaN; + this.selfBaseDuration = Number.NaN; + this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization. + // This won't trigger the performance cliff mentioned above, + // and it simplifies other profiler code (including DevTools). + + this.actualDuration = 0; + this.actualStartTime = -1; + this.selfBaseDuration = 0; + this.treeBaseDuration = 0; + } + + { + // This isn't directly used but is handy for debugging internals: + this._debugInfo = null; + this._debugOwner = null; + this._debugNeedsRemount = false; + this._debugHookTypes = null; + + if (!hasBadMapPolyfill && typeof Object.preventExtensions === 'function') { + Object.preventExtensions(this); + } + } +} // This is a constructor function, rather than a POJO constructor, still +// please ensure we do the following: +// 1) Nobody should add any instance methods on this. Instance methods can be +// more difficult to predict when they get optimized and they are almost +// never inlined properly in static compilers. +// 2) Nobody should rely on `instanceof Fiber` for type testing. We should +// always know when it is a fiber. +// 3) We might want to experiment with using numeric keys since they are easier +// to optimize in a non-JIT environment. +// 4) We can easily go from a constructor to a createFiber object literal if that +// is faster. +// 5) It should be easy to port this to a C struct and keep a C implementation +// compatible. + + +function createFiber(tag, pendingProps, key, mode) { + // $FlowFixMe[invalid-constructor]: the shapes are exact here but Flow doesn't like constructors + return new FiberNode(tag, pendingProps, key, mode); +} - workInProgress.type = current.type; // We already have an alternate. - // Reset the effect tag. +function shouldConstruct(Component) { + var prototype = Component.prototype; + return !!(prototype && prototype.isReactComponent); +} - workInProgress.flags = NoFlags$1; // The effects are no longer valid. +function isSimpleFunctionComponent(type) { + return typeof type === 'function' && !shouldConstruct(type) && type.defaultProps === undefined; +} +function isFunctionClassComponent(type) { + return shouldConstruct(type); +} // This is used to create an alternate fiber to do work on. + +function createWorkInProgress(current, pendingProps) { + var workInProgress = current.alternate; + + if (workInProgress === null) { + // We use a double buffering pooling technique because we know that we'll + // only ever need at most two versions of a tree. We pool the "other" unused + // node that we're free to reuse. This is lazily created to avoid allocating + // extra objects for things that are never updated. It also allow us to + // reclaim the extra memory if needed. + workInProgress = createFiber(current.tag, pendingProps, current.key, current.mode); + workInProgress.elementType = current.elementType; + workInProgress.type = current.type; + workInProgress.stateNode = current.stateNode; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.deletions = null; + { + // DEV-only fields + workInProgress._debugOwner = current._debugOwner; + workInProgress._debugHookTypes = current._debugHookTypes; + } - { - // We intentionally reset, rather than copy, actualDuration & actualStartTime. - // This prevents time from endlessly accumulating in new commits. - // This has the downside of resetting values for different priority renders, - // But works for yielding (the common case) and should support resuming. - workInProgress.actualDuration = 0; - workInProgress.actualStartTime = -1; - } - } // Reset all effects except static ones. - // Static effects are not specific to a render. - - workInProgress.flags = current.flags & StaticMask; - workInProgress.childLanes = current.childLanes; - workInProgress.lanes = current.lanes; - workInProgress.child = current.child; - workInProgress.memoizedProps = current.memoizedProps; - workInProgress.memoizedState = current.memoizedState; - workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so - // it cannot be shared with the current fiber. - - var currentDependencies = current.dependencies; - workInProgress.dependencies = - currentDependencies === null - ? null - : { - lanes: currentDependencies.lanes, - firstContext: currentDependencies.firstContext - }; // These will be overridden during the parent's reconciliation - - workInProgress.sibling = current.sibling; - workInProgress.index = current.index; - workInProgress.ref = current.ref; - workInProgress.refCleanup = current.refCleanup; + workInProgress.alternate = current; + current.alternate = workInProgress; + } else { + workInProgress.pendingProps = pendingProps; // Needed because Blocks store data on type. - { - workInProgress.selfBaseDuration = current.selfBaseDuration; - workInProgress.treeBaseDuration = current.treeBaseDuration; - } + workInProgress.type = current.type; // We already have an alternate. + // Reset the effect tag. - { - workInProgress._debugInfo = current._debugInfo; - workInProgress._debugNeedsRemount = current._debugNeedsRemount; + workInProgress.flags = NoFlags$1; // The effects are no longer valid. - switch (workInProgress.tag) { - case FunctionComponent: - case SimpleMemoComponent: - workInProgress.type = resolveFunctionForHotReloading(current.type); - break; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.deletions = null; - case ClassComponent: - workInProgress.type = resolveClassForHotReloading(current.type); - break; + { + // We intentionally reset, rather than copy, actualDuration & actualStartTime. + // This prevents time from endlessly accumulating in new commits. + // This has the downside of resetting values for different priority renders, + // But works for yielding (the common case) and should support resuming. + workInProgress.actualDuration = 0; + workInProgress.actualStartTime = -1; + } + } // Reset all effects except static ones. + // Static effects are not specific to a render. + + + workInProgress.flags = current.flags & StaticMask; + workInProgress.childLanes = current.childLanes; + workInProgress.lanes = current.lanes; + workInProgress.child = current.child; + workInProgress.memoizedProps = current.memoizedProps; + workInProgress.memoizedState = current.memoizedState; + workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so + // it cannot be shared with the current fiber. + + var currentDependencies = current.dependencies; + workInProgress.dependencies = currentDependencies === null ? null : { + lanes: currentDependencies.lanes, + firstContext: currentDependencies.firstContext + }; // These will be overridden during the parent's reconciliation + + workInProgress.sibling = current.sibling; + workInProgress.index = current.index; + workInProgress.ref = current.ref; + workInProgress.refCleanup = current.refCleanup; + + { + workInProgress.selfBaseDuration = current.selfBaseDuration; + workInProgress.treeBaseDuration = current.treeBaseDuration; + } + + { + workInProgress._debugInfo = current._debugInfo; + workInProgress._debugNeedsRemount = current._debugNeedsRemount; + + switch (workInProgress.tag) { + case FunctionComponent: + case SimpleMemoComponent: + workInProgress.type = resolveFunctionForHotReloading(current.type); + break; + + case ClassComponent: + workInProgress.type = resolveClassForHotReloading(current.type); + break; + + case ForwardRef: + workInProgress.type = resolveForwardRefForHotReloading(current.type); + break; + } + } + + return workInProgress; +} // Used to reuse a Fiber for a second pass. + +function resetWorkInProgress(workInProgress, renderLanes) { + // This resets the Fiber to what createFiber or createWorkInProgress would + // have set the values to before during the first pass. Ideally this wouldn't + // be necessary but unfortunately many code paths reads from the workInProgress + // when they should be reading from current and writing to workInProgress. + // We assume pendingProps, index, key, ref, return are still untouched to + // avoid doing another reconciliation. + // Reset the effect flags but keep any Placement tags, since that's something + // that child fiber is setting, not the reconciliation. + workInProgress.flags &= StaticMask | Placement; // The effects are no longer valid. + + var current = workInProgress.alternate; + + if (current === null) { + // Reset to createFiber's initial values. + workInProgress.childLanes = NoLanes; + workInProgress.lanes = renderLanes; + workInProgress.child = null; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.memoizedProps = null; + workInProgress.memoizedState = null; + workInProgress.updateQueue = null; + workInProgress.dependencies = null; + workInProgress.stateNode = null; - case ForwardRef: - workInProgress.type = resolveForwardRefForHotReloading( - current.type - ); - break; - } - } + { + // Note: We don't reset the actualTime counts. It's useful to accumulate + // actual time across multiple render passes. + workInProgress.selfBaseDuration = 0; + workInProgress.treeBaseDuration = 0; + } + } else { + // Reset to the cloned values that createWorkInProgress would've. + workInProgress.childLanes = current.childLanes; + workInProgress.lanes = current.lanes; + workInProgress.child = current.child; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.deletions = null; + workInProgress.memoizedProps = current.memoizedProps; + workInProgress.memoizedState = current.memoizedState; + workInProgress.updateQueue = current.updateQueue; // Needed because Blocks store data on type. + + workInProgress.type = current.type; // Clone the dependencies object. This is mutated during the render phase, so + // it cannot be shared with the current fiber. + + var currentDependencies = current.dependencies; + workInProgress.dependencies = currentDependencies === null ? null : { + lanes: currentDependencies.lanes, + firstContext: currentDependencies.firstContext + }; - return workInProgress; - } // Used to reuse a Fiber for a second pass. + { + // Note: We don't reset the actualTime counts. It's useful to accumulate + // actual time across multiple render passes. + workInProgress.selfBaseDuration = current.selfBaseDuration; + workInProgress.treeBaseDuration = current.treeBaseDuration; + } + } - function resetWorkInProgress(workInProgress, renderLanes) { - // This resets the Fiber to what createFiber or createWorkInProgress would - // have set the values to before during the first pass. Ideally this wouldn't - // be necessary but unfortunately many code paths reads from the workInProgress - // when they should be reading from current and writing to workInProgress. - // We assume pendingProps, index, key, ref, return are still untouched to - // avoid doing another reconciliation. - // Reset the effect flags but keep any Placement tags, since that's something - // that child fiber is setting, not the reconciliation. - workInProgress.flags &= StaticMask | Placement; // The effects are no longer valid. + return workInProgress; +} +function createHostRootFiber(tag, isStrictMode, concurrentUpdatesByDefaultOverride) { + var mode; - var current = workInProgress.alternate; + if (tag === ConcurrentRoot) { + mode = ConcurrentMode; - if (current === null) { - // Reset to createFiber's initial values. - workInProgress.childLanes = NoLanes; - workInProgress.lanes = renderLanes; - workInProgress.child = null; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.memoizedProps = null; - workInProgress.memoizedState = null; - workInProgress.updateQueue = null; - workInProgress.dependencies = null; - workInProgress.stateNode = null; + if (isStrictMode === true) { + mode |= StrictLegacyMode | StrictEffectsMode; + } + } else { + mode = NoMode; + } - { - // Note: We don't reset the actualTime counts. It's useful to accumulate - // actual time across multiple render passes. - workInProgress.selfBaseDuration = 0; - workInProgress.treeBaseDuration = 0; - } - } else { - // Reset to the cloned values that createWorkInProgress would've. - workInProgress.childLanes = current.childLanes; - workInProgress.lanes = current.lanes; - workInProgress.child = current.child; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.deletions = null; - workInProgress.memoizedProps = current.memoizedProps; - workInProgress.memoizedState = current.memoizedState; - workInProgress.updateQueue = current.updateQueue; // Needed because Blocks store data on type. - - workInProgress.type = current.type; // Clone the dependencies object. This is mutated during the render phase, so - // it cannot be shared with the current fiber. - - var currentDependencies = current.dependencies; - workInProgress.dependencies = - currentDependencies === null - ? null - : { - lanes: currentDependencies.lanes, - firstContext: currentDependencies.firstContext - }; + if (isDevToolsPresent) { + // Always collect profile timings when DevTools are present. + // This enables DevTools to start capturing timing at any point– + // Without some nodes in the tree having empty base times. + mode |= ProfileMode; + } - { - // Note: We don't reset the actualTime counts. It's useful to accumulate - // actual time across multiple render passes. - workInProgress.selfBaseDuration = current.selfBaseDuration; - workInProgress.treeBaseDuration = current.treeBaseDuration; - } - } + return createFiber(HostRoot, null, null, mode); +} +function createFiberFromTypeAndProps(type, // React$ElementType +key, pendingProps, owner, mode, lanes) { + var fiberTag = FunctionComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy. - return workInProgress; - } - function createHostRootFiber( - tag, - isStrictMode, - concurrentUpdatesByDefaultOverride - ) { - var mode; + var resolvedType = type; - if (tag === ConcurrentRoot) { - mode = ConcurrentMode; + if (typeof type === 'function') { + if (shouldConstruct(type)) { + fiberTag = ClassComponent; - if (isStrictMode === true) { - mode |= StrictLegacyMode | StrictEffectsMode; - } - } else { - mode = NoMode; + { + resolvedType = resolveClassForHotReloading(resolvedType); } - - if (isDevToolsPresent) { - // Always collect profile timings when DevTools are present. - // This enables DevTools to start capturing timing at any point– - // Without some nodes in the tree having empty base times. - mode |= ProfileMode; + } else { + { + resolvedType = resolveFunctionForHotReloading(resolvedType); } - - return createFiber(HostRoot, null, null, mode); } - function createFiberFromTypeAndProps( - type, // React$ElementType - key, - pendingProps, - owner, - mode, - lanes - ) { - var fiberTag = FunctionComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy. - - var resolvedType = type; + } else if (typeof type === 'string') { + { + fiberTag = HostComponent; + } + } else { + getTag: switch (type) { + case REACT_FRAGMENT_TYPE: + return createFiberFromFragment(pendingProps.children, mode, lanes, key); - if (typeof type === "function") { - if (shouldConstruct(type)) { - fiberTag = ClassComponent; + case REACT_STRICT_MODE_TYPE: + fiberTag = Mode; + mode |= StrictLegacyMode; - { - resolvedType = resolveClassForHotReloading(resolvedType); - } - } else { - { - resolvedType = resolveFunctionForHotReloading(resolvedType); - } - } - } else if (typeof type === "string") { - { - fiberTag = HostComponent; + if ((mode & ConcurrentMode) !== NoMode) { + // Strict effects should never run on legacy roots + mode |= StrictEffectsMode; } - } else { - getTag: switch (type) { - case REACT_FRAGMENT_TYPE: - return createFiberFromFragment( - pendingProps.children, - mode, - lanes, - key - ); - - case REACT_STRICT_MODE_TYPE: - fiberTag = Mode; - mode |= StrictLegacyMode; - - if ((mode & ConcurrentMode) !== NoMode) { - // Strict effects should never run on legacy roots - mode |= StrictEffectsMode; - } - break; + break; - case REACT_PROFILER_TYPE: - return createFiberFromProfiler(pendingProps, mode, lanes, key); + case REACT_PROFILER_TYPE: + return createFiberFromProfiler(pendingProps, mode, lanes, key); - case REACT_SUSPENSE_TYPE: - return createFiberFromSuspense(pendingProps, mode, lanes, key); + case REACT_SUSPENSE_TYPE: + return createFiberFromSuspense(pendingProps, mode, lanes, key); - case REACT_SUSPENSE_LIST_TYPE: - return createFiberFromSuspenseList(pendingProps, mode, lanes, key); + case REACT_SUSPENSE_LIST_TYPE: + return createFiberFromSuspenseList(pendingProps, mode, lanes, key); - case REACT_OFFSCREEN_TYPE: - return createFiberFromOffscreen(pendingProps, mode, lanes, key); + case REACT_OFFSCREEN_TYPE: + return createFiberFromOffscreen(pendingProps, mode, lanes, key); - case REACT_LEGACY_HIDDEN_TYPE: + case REACT_LEGACY_HIDDEN_TYPE: - // Fall through + // Fall through - case REACT_SCOPE_TYPE: + case REACT_SCOPE_TYPE: - // Fall through + // Fall through - case REACT_TRACING_MARKER_TYPE: + case REACT_TRACING_MARKER_TYPE: - // Fall through + // Fall through - case REACT_DEBUG_TRACING_MODE_TYPE: + case REACT_DEBUG_TRACING_MODE_TYPE: - // Fall through + // Fall through - default: { - if (typeof type === "object" && type !== null) { - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: - if (!enableRenderableContext) { - fiberTag = ContextProvider; - break getTag; - } + default: + { + if (typeof type === 'object' && type !== null) { + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + if (!enableRenderableContext) { + fiberTag = ContextProvider; + break getTag; + } - // Fall through + // Fall through - case REACT_CONTEXT_TYPE: - if (enableRenderableContext) { - fiberTag = ContextProvider; - break getTag; - } else { - fiberTag = ContextConsumer; - break getTag; - } + case REACT_CONTEXT_TYPE: + if (enableRenderableContext) { + fiberTag = ContextProvider; + break getTag; + } else { + fiberTag = ContextConsumer; + break getTag; + } - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - fiberTag = ContextConsumer; - break getTag; - } + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + fiberTag = ContextConsumer; + break getTag; + } - // Fall through + // Fall through - case REACT_FORWARD_REF_TYPE: - fiberTag = ForwardRef; + case REACT_FORWARD_REF_TYPE: + fiberTag = ForwardRef; - { - resolvedType = - resolveForwardRefForHotReloading(resolvedType); - } + { + resolvedType = resolveForwardRefForHotReloading(resolvedType); + } - break getTag; + break getTag; - case REACT_MEMO_TYPE: - fiberTag = MemoComponent; - break getTag; + case REACT_MEMO_TYPE: + fiberTag = MemoComponent; + break getTag; - case REACT_LAZY_TYPE: - fiberTag = LazyComponent; - resolvedType = null; - break getTag; - } + case REACT_LAZY_TYPE: + fiberTag = LazyComponent; + resolvedType = null; + break getTag; } + } - var info = ""; + var info = ''; - { - if ( - type === undefined || - (typeof type === "object" && - type !== null && - Object.keys(type).length === 0) - ) { - info += - " You likely forgot to export your component from the file " + - "it's defined in, or you might have mixed up default and " + - "named imports."; - } + { + if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) { + info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.'; + } - var ownerName = owner ? getComponentNameFromOwner(owner) : null; + var ownerName = owner ? getComponentNameFromOwner(owner) : null; - if (ownerName) { - info += "\n\nCheck the render method of `" + ownerName + "`."; - } + if (ownerName) { + info += '\n\nCheck the render method of `' + ownerName + '`.'; } - - throw new Error( - "Element type is invalid: expected a string (for built-in " + - "components) or a class/function (for composite components) " + - ("but got: " + (type == null ? type : typeof type) + "." + info) - ); } + + throw new Error('Element type is invalid: expected a string (for built-in ' + 'components) or a class/function (for composite components) ' + ("but got: " + (type == null ? type : typeof type) + "." + info)); } - } + } + } - var fiber = createFiber(fiberTag, pendingProps, key, mode); - fiber.elementType = type; - fiber.type = resolvedType; - fiber.lanes = lanes; + var fiber = createFiber(fiberTag, pendingProps, key, mode); + fiber.elementType = type; + fiber.type = resolvedType; + fiber.lanes = lanes; - { - fiber._debugOwner = owner; - } + { + fiber._debugOwner = owner; + } - return fiber; - } - function createFiberFromElement(element, mode, lanes) { - var owner = null; + return fiber; +} +function createFiberFromElement(element, mode, lanes) { + var owner = null; - { - owner = element._owner; - } + { + owner = element._owner; + } - var type = element.type; - var key = element.key; - var pendingProps = element.props; - var fiber = createFiberFromTypeAndProps( - type, - key, - pendingProps, - owner, - mode, - lanes - ); + var type = element.type; + var key = element.key; + var pendingProps = element.props; + var fiber = createFiberFromTypeAndProps(type, key, pendingProps, owner, mode, lanes); - { - fiber._debugOwner = element._owner; - } + { + fiber._debugOwner = element._owner; + } - return fiber; - } - function createFiberFromFragment(elements, mode, lanes, key) { - var fiber = createFiber(Fragment, elements, key, mode); - fiber.lanes = lanes; - return fiber; + return fiber; +} +function createFiberFromFragment(elements, mode, lanes, key) { + var fiber = createFiber(Fragment, elements, key, mode); + fiber.lanes = lanes; + return fiber; +} + +function createFiberFromProfiler(pendingProps, mode, lanes, key) { + { + if (typeof pendingProps.id !== 'string') { + error('Profiler must specify an "id" of type `string` as a prop. Received the type `%s` instead.', typeof pendingProps.id); } + } - function createFiberFromProfiler(pendingProps, mode, lanes, key) { - { - if (typeof pendingProps.id !== "string") { - error( - 'Profiler must specify an "id" of type `string` as a prop. Received the type `%s` instead.', - typeof pendingProps.id - ); - } - } + var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); + fiber.elementType = REACT_PROFILER_TYPE; + fiber.lanes = lanes; - var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); - fiber.elementType = REACT_PROFILER_TYPE; - fiber.lanes = lanes; + { + fiber.stateNode = { + effectDuration: 0, + passiveEffectDuration: 0 + }; + } - { - fiber.stateNode = { - effectDuration: 0, - passiveEffectDuration: 0 - }; - } + return fiber; +} - return fiber; - } - - function createFiberFromSuspense(pendingProps, mode, lanes, key) { - var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); - fiber.elementType = REACT_SUSPENSE_TYPE; - fiber.lanes = lanes; - return fiber; - } - function createFiberFromSuspenseList(pendingProps, mode, lanes, key) { - var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode); - fiber.elementType = REACT_SUSPENSE_LIST_TYPE; - fiber.lanes = lanes; - return fiber; - } - function createFiberFromOffscreen(pendingProps, mode, lanes, key) { - var fiber = createFiber(OffscreenComponent, pendingProps, key, mode); - fiber.elementType = REACT_OFFSCREEN_TYPE; - fiber.lanes = lanes; - var primaryChildInstance = { - _visibility: OffscreenVisible, - _pendingVisibility: OffscreenVisible, - _pendingMarkers: null, - _retryCache: null, - _transitions: null, - _current: null, - detach: function () { - return detachOffscreenInstance(primaryChildInstance); - }, - attach: function () { - return attachOffscreenInstance(primaryChildInstance); - } - }; - fiber.stateNode = primaryChildInstance; - return fiber; - } - function createFiberFromText(content, mode, lanes) { - var fiber = createFiber(HostText, content, null, mode); - fiber.lanes = lanes; - return fiber; - } - function createFiberFromPortal(portal, mode, lanes) { - var pendingProps = portal.children !== null ? portal.children : []; - var fiber = createFiber(HostPortal, pendingProps, portal.key, mode); - fiber.lanes = lanes; - fiber.stateNode = { - containerInfo: portal.containerInfo, - pendingChildren: null, - // Used by persistent updates - implementation: portal.implementation - }; - return fiber; - } - - function FiberRootNode( - containerInfo, // $FlowFixMe[missing-local-annot] - tag, - hydrate, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - formState - ) { - this.tag = tag; - this.containerInfo = containerInfo; - this.pendingChildren = null; - this.current = null; - this.pingCache = null; - this.finishedWork = null; - this.timeoutHandle = noTimeout; - this.cancelPendingCommit = null; - this.context = null; - this.pendingContext = null; - this.next = null; - this.callbackNode = null; - this.callbackPriority = NoLane; - this.expirationTimes = createLaneMap(NoTimestamp); - this.pendingLanes = NoLanes; - this.suspendedLanes = NoLanes; - this.pingedLanes = NoLanes; - this.expiredLanes = NoLanes; - this.finishedLanes = NoLanes; - this.errorRecoveryDisabledLanes = NoLanes; - this.shellSuspendCounter = 0; - this.entangledLanes = NoLanes; - this.entanglements = createLaneMap(NoLanes); - this.hiddenUpdates = createLaneMap(null); - this.identifierPrefix = identifierPrefix; - this.onUncaughtError = onUncaughtError; - this.onCaughtError = onCaughtError; - this.onRecoverableError = onRecoverableError; +function createFiberFromSuspense(pendingProps, mode, lanes, key) { + var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); + fiber.elementType = REACT_SUSPENSE_TYPE; + fiber.lanes = lanes; + return fiber; +} +function createFiberFromSuspenseList(pendingProps, mode, lanes, key) { + var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode); + fiber.elementType = REACT_SUSPENSE_LIST_TYPE; + fiber.lanes = lanes; + return fiber; +} +function createFiberFromOffscreen(pendingProps, mode, lanes, key) { + var fiber = createFiber(OffscreenComponent, pendingProps, key, mode); + fiber.elementType = REACT_OFFSCREEN_TYPE; + fiber.lanes = lanes; + var primaryChildInstance = { + _visibility: OffscreenVisible, + _pendingVisibility: OffscreenVisible, + _pendingMarkers: null, + _retryCache: null, + _transitions: null, + _current: null, + detach: function () { + return detachOffscreenInstance(primaryChildInstance); + }, + attach: function () { + return attachOffscreenInstance(primaryChildInstance); + } + }; + fiber.stateNode = primaryChildInstance; + return fiber; +} +function createFiberFromText(content, mode, lanes) { + var fiber = createFiber(HostText, content, null, mode); + fiber.lanes = lanes; + return fiber; +} +function createFiberFromPortal(portal, mode, lanes) { + var pendingProps = portal.children !== null ? portal.children : []; + var fiber = createFiber(HostPortal, pendingProps, portal.key, mode); + fiber.lanes = lanes; + fiber.stateNode = { + containerInfo: portal.containerInfo, + pendingChildren: null, + // Used by persistent updates + implementation: portal.implementation + }; + return fiber; +} - { - this.pooledCache = null; - this.pooledCacheLanes = NoLanes; +function FiberRootNode(containerInfo, // $FlowFixMe[missing-local-annot] +tag, hydrate, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, formState) { + this.tag = tag; + this.containerInfo = containerInfo; + this.pendingChildren = null; + this.current = null; + this.pingCache = null; + this.finishedWork = null; + this.timeoutHandle = noTimeout; + this.cancelPendingCommit = null; + this.context = null; + this.pendingContext = null; + this.next = null; + this.callbackNode = null; + this.callbackPriority = NoLane; + this.expirationTimes = createLaneMap(NoTimestamp); + this.pendingLanes = NoLanes; + this.suspendedLanes = NoLanes; + this.pingedLanes = NoLanes; + this.expiredLanes = NoLanes; + this.finishedLanes = NoLanes; + this.errorRecoveryDisabledLanes = NoLanes; + this.shellSuspendCounter = 0; + this.entangledLanes = NoLanes; + this.entanglements = createLaneMap(NoLanes); + this.hiddenUpdates = createLaneMap(null); + this.identifierPrefix = identifierPrefix; + this.onUncaughtError = onUncaughtError; + this.onCaughtError = onCaughtError; + this.onRecoverableError = onRecoverableError; + + { + this.pooledCache = null; + this.pooledCacheLanes = NoLanes; + } + + this.formState = formState; + this.incompleteTransitions = new Map(); + + { + this.effectDuration = 0; + this.passiveEffectDuration = 0; + } + + { + this.memoizedUpdaters = new Set(); + var pendingUpdatersLaneMap = this.pendingUpdatersLaneMap = []; + + for (var _i = 0; _i < TotalLanes; _i++) { + pendingUpdatersLaneMap.push(new Set()); + } + } + + { + { + switch (tag) { + case ConcurrentRoot: + this._debugRootType = hydrate ? 'hydrateRoot()' : 'createRoot()'; + break; + + case LegacyRoot: + this._debugRootType = hydrate ? 'hydrate()' : 'render()'; + break; } + } + } +} - this.formState = formState; - this.incompleteTransitions = new Map(); +function createFiberRoot(containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, // TODO: We have several of these arguments that are conceptually part of the +// host config, but because they are passed in at runtime, we have to thread +// them through the root constructor. Perhaps we should put them all into a +// single type, like a DynamicHostConfig that is defined by the renderer. +identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks, formState) { + // $FlowFixMe[invalid-constructor] Flow no longer supports calling new on functions + var root = new FiberRootNode(containerInfo, tag, hydrate, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, formState); + // stateNode is any. + + + var uninitializedFiber = createHostRootFiber(tag, isStrictMode); + root.current = uninitializedFiber; + uninitializedFiber.stateNode = root; + + { + var initialCache = createCache(); + retainCache(initialCache); // The pooledCache is a fresh cache instance that is used temporarily + // for newly mounted boundaries during a render. In general, the + // pooledCache is always cleared from the root at the end of a render: + // it is either released when render commits, or moved to an Offscreen + // component if rendering suspends. Because the lifetime of the pooled + // cache is distinct from the main memoizedState.cache, it must be + // retained separately. + + root.pooledCache = initialCache; + retainCache(initialCache); + var initialState = { + element: initialChildren, + isDehydrated: hydrate, + cache: initialCache + }; + uninitializedFiber.memoizedState = initialState; + } - { - this.effectDuration = 0; - this.passiveEffectDuration = 0; - } + initializeUpdateQueue(uninitializedFiber); + return root; +} - { - this.memoizedUpdaters = new Set(); - var pendingUpdatersLaneMap = (this.pendingUpdatersLaneMap = []); +var ReactVersion = '19.0.0-canary-bd0f09e6'; - for (var _i = 0; _i < TotalLanes; _i++) { - pendingUpdatersLaneMap.push(new Set()); - } - } +/* + * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol + * and Temporal.* types. See https://github.com/facebook/react/pull/22064. + * + * The functions in this module will throw an easier-to-understand, + * easier-to-debug exception with a clear errors message message explaining the + * problem. (Instead of a confusing exception thrown inside the implementation + * of the `value` object). + */ +// $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +function typeName(value) { + { + // toStringTag is needed for namespaced types like Temporal.Instant + var hasToStringTag = typeof Symbol === 'function' && Symbol.toStringTag; + var type = hasToStringTag && value[Symbol.toStringTag] || value.constructor.name || 'Object'; // $FlowFixMe[incompatible-return] + + return type; + } +} // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + + +function willCoercionThrow(value) { + { + try { + testStringCoercion(value); + return false; + } catch (e) { + return true; + } + } +} - { - { - switch (tag) { - case ConcurrentRoot: - this._debugRootType = hydrate ? "hydrateRoot()" : "createRoot()"; - break; +function testStringCoercion(value) { + // If you ended up here by following an exception call stack, here's what's + // happened: you supplied an object or symbol value to React (as a prop, key, + // DOM attribute, CSS property, string ref, etc.) and when React tried to + // coerce it to a string using `'' + value`, an exception was thrown. + // + // The most common types that will cause this exception are `Symbol` instances + // and Temporal objects like `Temporal.Instant`. But any object that has a + // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this + // exception. (Library authors do this to prevent users from using built-in + // numeric operators like `+` or comparison operators like `>=` because custom + // methods are needed to perform accurate arithmetic or comparison.) + // + // To fix the problem, coerce this object or symbol value to a string before + // passing it to React. The most reliable way is usually `String(value)`. + // + // To find which value is throwing, check the browser or debugger console. + // Before this exception was thrown, there should be `console.error` output + // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the + // problem and how that type was used: key, atrribute, input value prop, etc. + // In most cases, this console output also shows the component and its + // ancestor components where the exception happened. + // + // eslint-disable-next-line react-internal/safe-string-coercion + return '' + value; +} +function checkKeyStringCoercion(value) { + { + if (willCoercionThrow(value)) { + error('The provided key is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', typeName(value)); - case LegacyRoot: - this._debugRootType = hydrate ? "hydrate()" : "render()"; - break; - } - } - } + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) } + } +} - function createFiberRoot( - containerInfo, - tag, - hydrate, - initialChildren, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, // TODO: We have several of these arguments that are conceptually part of the - // host config, but because they are passed in at runtime, we have to thread - // them through the root constructor. Perhaps we should put them all into a - // single type, like a DynamicHostConfig that is defined by the renderer. - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks, - formState - ) { - // $FlowFixMe[invalid-constructor] Flow no longer supports calling new on functions - var root = new FiberRootNode( - containerInfo, - tag, - hydrate, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - formState - ); - // stateNode is any. - - var uninitializedFiber = createHostRootFiber(tag, isStrictMode); - root.current = uninitializedFiber; - uninitializedFiber.stateNode = root; +function createPortal$1(children, containerInfo, // TODO: figure out the API for cross-renderer implementation. +implementation) { + var key = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null; + + { + checkKeyStringCoercion(key); + } + + return { + // This tag allow us to uniquely identify this as a React Portal + $$typeof: REACT_PORTAL_TYPE, + key: key == null ? null : '' + key, + children: children, + containerInfo: containerInfo, + implementation: implementation + }; +} - { - var initialCache = createCache(); - retainCache(initialCache); // The pooledCache is a fresh cache instance that is used temporarily - // for newly mounted boundaries during a render. In general, the - // pooledCache is always cleared from the root at the end of a render: - // it is either released when render commits, or moved to an Offscreen - // component if rendering suspends. Because the lifetime of the pooled - // cache is distinct from the main memoizedState.cache, it must be - // retained separately. - - root.pooledCache = initialCache; - retainCache(initialCache); - var initialState = { - element: initialChildren, - isDehydrated: hydrate, - cache: initialCache - }; - uninitializedFiber.memoizedState = initialState; - } +// Might add PROFILE later. - initializeUpdateQueue(uninitializedFiber); - return root; - } +var didWarnAboutNestedUpdates; +var didWarnAboutFindNodeInStrictMode; - var ReactVersion = "19.0.0-canary-adfb7d73"; +{ + didWarnAboutNestedUpdates = false; + didWarnAboutFindNodeInStrictMode = {}; +} - /* - * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol - * and Temporal.* types. See https://github.com/facebook/react/pull/22064. - * - * The functions in this module will throw an easier-to-understand, - * easier-to-debug exception with a clear errors message message explaining the - * problem. (Instead of a confusing exception thrown inside the implementation - * of the `value` object). - */ - // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. - function typeName(value) { - { - // toStringTag is needed for namespaced types like Temporal.Instant - var hasToStringTag = typeof Symbol === "function" && Symbol.toStringTag; - var type = - (hasToStringTag && value[Symbol.toStringTag]) || - value.constructor.name || - "Object"; // $FlowFixMe[incompatible-return] +function getContextForSubtree(parentComponent) { + if (!parentComponent) { + return emptyContextObject; + } - return type; - } - } // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + var fiber = get(parentComponent); + var parentContext = findCurrentUnmaskedContext(fiber); - function willCoercionThrow(value) { - { - try { - testStringCoercion(value); - return false; - } catch (e) { - return true; - } - } - } + if (fiber.tag === ClassComponent) { + var Component = fiber.type; - function testStringCoercion(value) { - // If you ended up here by following an exception call stack, here's what's - // happened: you supplied an object or symbol value to React (as a prop, key, - // DOM attribute, CSS property, string ref, etc.) and when React tried to - // coerce it to a string using `'' + value`, an exception was thrown. - // - // The most common types that will cause this exception are `Symbol` instances - // and Temporal objects like `Temporal.Instant`. But any object that has a - // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this - // exception. (Library authors do this to prevent users from using built-in - // numeric operators like `+` or comparison operators like `>=` because custom - // methods are needed to perform accurate arithmetic or comparison.) - // - // To fix the problem, coerce this object or symbol value to a string before - // passing it to React. The most reliable way is usually `String(value)`. - // - // To find which value is throwing, check the browser or debugger console. - // Before this exception was thrown, there should be `console.error` output - // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the - // problem and how that type was used: key, atrribute, input value prop, etc. - // In most cases, this console output also shows the component and its - // ancestor components where the exception happened. - // - // eslint-disable-next-line react-internal/safe-string-coercion - return "" + value; + if (isContextProvider(Component)) { + return processChildContext(fiber, Component, parentContext); } - function checkKeyStringCoercion(value) { - { - if (willCoercionThrow(value)) { - error( - "The provided key is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - typeName(value) - ); + } - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) - } - } - } + return parentContext; +} - function createPortal$1( - children, - containerInfo, // TODO: figure out the API for cross-renderer implementation. - implementation - ) { - var key = - arguments.length > 3 && arguments[3] !== undefined - ? arguments[3] - : null; +function findHostInstanceWithWarning(component, methodName) { + { + var fiber = get(component); - { - checkKeyStringCoercion(key); + if (fiber === undefined) { + if (typeof component.render === 'function') { + throw new Error('Unable to find node on an unmounted component.'); + } else { + var keys = Object.keys(component).join(','); + throw new Error("Argument appears to not be a ReactComponent. Keys: " + keys); } - - return { - // This tag allow us to uniquely identify this as a React Portal - $$typeof: REACT_PORTAL_TYPE, - key: key == null ? null : "" + key, - children: children, - containerInfo: containerInfo, - implementation: implementation - }; } - // Might add PROFILE later. + var hostFiber = findCurrentHostFiber(fiber); - var didWarnAboutNestedUpdates; - var didWarnAboutFindNodeInStrictMode; - - { - didWarnAboutNestedUpdates = false; - didWarnAboutFindNodeInStrictMode = {}; + if (hostFiber === null) { + return null; } - function getContextForSubtree(parentComponent) { - if (!parentComponent) { - return emptyContextObject; - } + if (hostFiber.mode & StrictLegacyMode) { + var componentName = getComponentNameFromFiber(fiber) || 'Component'; - var fiber = get(parentComponent); - var parentContext = findCurrentUnmaskedContext(fiber); + if (!didWarnAboutFindNodeInStrictMode[componentName]) { + didWarnAboutFindNodeInStrictMode[componentName] = true; + var previousFiber = current; - if (fiber.tag === ClassComponent) { - var Component = fiber.type; + try { + setCurrentFiber(hostFiber); - if (isContextProvider(Component)) { - return processChildContext(fiber, Component, parentContext); + if (fiber.mode & StrictLegacyMode) { + error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which is inside StrictMode. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-find-node', methodName, methodName, componentName); + } else { + error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which renders StrictMode children. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-find-node', methodName, methodName, componentName); + } + } finally { + // Ideally this should reset to previous but this shouldn't be called in + // render and there's another warning for that anyway. + if (previousFiber) { + setCurrentFiber(previousFiber); + } else { + resetCurrentFiber(); + } } } - - return parentContext; } - function findHostInstanceWithWarning(component, methodName) { - { - var fiber = get(component); - - if (fiber === undefined) { - if (typeof component.render === "function") { - throw new Error("Unable to find node on an unmounted component."); - } else { - var keys = Object.keys(component).join(","); - throw new Error( - "Argument appears to not be a ReactComponent. Keys: " + keys - ); - } - } + return getPublicInstance(hostFiber.stateNode); + } +} - var hostFiber = findCurrentHostFiber(fiber); +function createContainer(containerInfo, tag, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks) { + var hydrate = false; + var initialChildren = null; + return createFiberRoot(containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks, null); +} +function updateContainer(element, container, parentComponent, callback) { + var current = container.current; + var lane = requestUpdateLane(current); + updateContainerImpl(current, lane, element, container, parentComponent, callback); + return lane; +} +function updateContainerSync(element, container, parentComponent, callback) { + if (container.tag === LegacyRoot) { + flushPassiveEffects(); + } + + var current = container.current; + updateContainerImpl(current, SyncLane, element, container, parentComponent, callback); + return SyncLane; +} - if (hostFiber === null) { - return null; - } +function updateContainerImpl(rootFiber, lane, element, container, parentComponent, callback) { + { + onScheduleRoot(container, element); + } - if (hostFiber.mode & StrictLegacyMode) { - var componentName = getComponentNameFromFiber(fiber) || "Component"; + { + markRenderScheduled(lane); + } - if (!didWarnAboutFindNodeInStrictMode[componentName]) { - didWarnAboutFindNodeInStrictMode[componentName] = true; - var previousFiber = current; + var context = getContextForSubtree(parentComponent); - try { - setCurrentFiber(hostFiber); - - if (fiber.mode & StrictLegacyMode) { - error( - "%s is deprecated in StrictMode. " + - "%s was passed an instance of %s which is inside StrictMode. " + - "Instead, add a ref directly to the element you want to reference. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-find-node", - methodName, - methodName, - componentName - ); - } else { - error( - "%s is deprecated in StrictMode. " + - "%s was passed an instance of %s which renders StrictMode children. " + - "Instead, add a ref directly to the element you want to reference. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-find-node", - methodName, - methodName, - componentName - ); - } - } finally { - // Ideally this should reset to previous but this shouldn't be called in - // render and there's another warning for that anyway. - if (previousFiber) { - setCurrentFiber(previousFiber); - } else { - resetCurrentFiber(); - } - } - } - } + if (container.context === null) { + container.context = context; + } else { + container.pendingContext = context; + } - return getPublicInstance(hostFiber.stateNode); - } - } - - function createContainer( - containerInfo, - tag, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks - ) { - var hydrate = false; - var initialChildren = null; - return createFiberRoot( - containerInfo, - tag, - hydrate, - initialChildren, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks, - null - ); - } - function updateContainer(element, container, parentComponent, callback) { - var current = container.current; - var lane = requestUpdateLane(current); - updateContainerImpl( - current, - lane, - element, - container, - parentComponent, - callback - ); - return lane; - } - function updateContainerSync( - element, - container, - parentComponent, - callback - ) { - if (container.tag === LegacyRoot) { - flushPassiveEffects(); - } + { + if (isRendering && current !== null && !didWarnAboutNestedUpdates) { + didWarnAboutNestedUpdates = true; - var current = container.current; - updateContainerImpl( - current, - SyncLane, - element, - container, - parentComponent, - callback - ); - return SyncLane; + error('Render methods should be a pure function of props and state; ' + 'triggering nested component updates from render is not allowed. ' + 'If necessary, trigger nested updates in componentDidUpdate.\n\n' + 'Check the render method of %s.', getComponentNameFromFiber(current) || 'Unknown'); } + } - function updateContainerImpl( - rootFiber, - lane, - element, - container, - parentComponent, - callback - ) { - { - onScheduleRoot(container, element); - } + var update = createUpdate(lane); // Caution: React DevTools currently depends on this property + // being called "element". - { - markRenderScheduled(lane); + update.payload = { + element: element + }; + callback = callback === undefined ? null : callback; + + if (callback !== null) { + { + if (typeof callback !== 'function') { + error('Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback); } + } + + update.callback = callback; + } + + var root = enqueueUpdate(rootFiber, update, lane); + + if (root !== null) { + scheduleUpdateOnFiber(root, rootFiber, lane); + entangleTransitions(root, rootFiber, lane); + } +} +function getPublicRootInstance(container) { + var containerFiber = container.current; + + if (!containerFiber.child) { + return null; + } + + switch (containerFiber.child.tag) { + case HostSingleton: + case HostComponent: + return getPublicInstance(containerFiber.child.stateNode); + + default: + return containerFiber.child.stateNode; + } +} + +var shouldErrorImpl = function (fiber) { + return null; +}; + +function shouldError(fiber) { + return shouldErrorImpl(fiber); +} - var context = getContextForSubtree(parentComponent); +var shouldSuspendImpl = function (fiber) { + return false; +}; - if (container.context === null) { - container.context = context; +function shouldSuspend(fiber) { + return shouldSuspendImpl(fiber); +} +var overrideHookState = null; +var overrideHookStateDeletePath = null; +var overrideHookStateRenamePath = null; +var overrideProps = null; +var overridePropsDeletePath = null; +var overridePropsRenamePath = null; +var scheduleUpdate = null; +var setErrorHandler = null; +var setSuspenseHandler = null; + +{ + var copyWithDeleteImpl = function (obj, path, index) { + var key = path[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); + + if (index + 1 === path.length) { + if (isArray(updated)) { + updated.splice(key, 1); } else { - container.pendingContext = context; + delete updated[key]; } - { - if (isRendering && current !== null && !didWarnAboutNestedUpdates) { - didWarnAboutNestedUpdates = true; + return updated; + } // $FlowFixMe[incompatible-use] number or string is fine here - error( - "Render methods should be a pure function of props and state; " + - "triggering nested component updates from render is not allowed. " + - "If necessary, trigger nested updates in componentDidUpdate.\n\n" + - "Check the render method of %s.", - getComponentNameFromFiber(current) || "Unknown" - ); - } - } - var update = createUpdate(lane); // Caution: React DevTools currently depends on this property - // being called "element". + updated[key] = copyWithDeleteImpl(obj[key], path, index + 1); + return updated; + }; - update.payload = { - element: element - }; - callback = callback === undefined ? null : callback; + var copyWithDelete = function (obj, path) { + return copyWithDeleteImpl(obj, path, 0); + }; - if (callback !== null) { - { - if (typeof callback !== "function") { - error( - "Expected the last optional `callback` argument to be a " + - "function. Instead received: %s.", - callback - ); - } - } + var copyWithRenameImpl = function (obj, oldPath, newPath, index) { + var oldKey = oldPath[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); - update.callback = callback; - } + if (index + 1 === oldPath.length) { + var newKey = newPath[index]; // $FlowFixMe[incompatible-use] number or string is fine here - var root = enqueueUpdate(rootFiber, update, lane); + updated[newKey] = updated[oldKey]; - if (root !== null) { - scheduleUpdateOnFiber(root, rootFiber, lane); - entangleTransitions(root, rootFiber, lane); + if (isArray(updated)) { + updated.splice(oldKey, 1); + } else { + delete updated[oldKey]; } + } else { + // $FlowFixMe[incompatible-use] number or string is fine here + updated[oldKey] = copyWithRenameImpl( // $FlowFixMe[incompatible-use] number or string is fine here + obj[oldKey], oldPath, newPath, index + 1); } - function getPublicRootInstance(container) { - var containerFiber = container.current; - if (!containerFiber.child) { - return null; - } - - switch (containerFiber.child.tag) { - case HostSingleton: - case HostComponent: - return getPublicInstance(containerFiber.child.stateNode); + return updated; + }; - default: - return containerFiber.child.stateNode; - } - } + var copyWithRename = function (obj, oldPath, newPath) { + if (oldPath.length !== newPath.length) { + warn('copyWithRename() expects paths of the same length'); - var shouldErrorImpl = function (fiber) { - return null; - }; + return; + } else { + for (var i = 0; i < newPath.length - 1; i++) { + if (oldPath[i] !== newPath[i]) { + warn('copyWithRename() expects paths to be the same except for the deepest key'); - function shouldError(fiber) { - return shouldErrorImpl(fiber); + return; + } + } } - var shouldSuspendImpl = function (fiber) { - return false; - }; + return copyWithRenameImpl(obj, oldPath, newPath, 0); + }; - function shouldSuspend(fiber) { - return shouldSuspendImpl(fiber); + var copyWithSetImpl = function (obj, path, index, value) { + if (index >= path.length) { + return value; } - var overrideHookState = null; - var overrideHookStateDeletePath = null; - var overrideHookStateRenamePath = null; - var overrideProps = null; - var overridePropsDeletePath = null; - var overridePropsRenamePath = null; - var scheduleUpdate = null; - var setErrorHandler = null; - var setSuspenseHandler = null; - - { - var copyWithDeleteImpl = function (obj, path, index) { - var key = path[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); - - if (index + 1 === path.length) { - if (isArray(updated)) { - updated.splice(key, 1); - } else { - delete updated[key]; - } - return updated; - } // $FlowFixMe[incompatible-use] number or string is fine here + var key = path[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); // $FlowFixMe[incompatible-use] number or string is fine here - updated[key] = copyWithDeleteImpl(obj[key], path, index + 1); - return updated; - }; + updated[key] = copyWithSetImpl(obj[key], path, index + 1, value); + return updated; + }; - var copyWithDelete = function (obj, path) { - return copyWithDeleteImpl(obj, path, 0); - }; + var copyWithSet = function (obj, path, value) { + return copyWithSetImpl(obj, path, 0, value); + }; - var copyWithRenameImpl = function (obj, oldPath, newPath, index) { - var oldKey = oldPath[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); + var findHook = function (fiber, id) { + // For now, the "id" of stateful hooks is just the stateful hook index. + // This may change in the future with e.g. nested hooks. + var currentHook = fiber.memoizedState; - if (index + 1 === oldPath.length) { - var newKey = newPath[index]; // $FlowFixMe[incompatible-use] number or string is fine here + while (currentHook !== null && id > 0) { + currentHook = currentHook.next; + id--; + } - updated[newKey] = updated[oldKey]; + return currentHook; + }; // Support DevTools editable values for useState and useReducer. - if (isArray(updated)) { - updated.splice(oldKey, 1); - } else { - delete updated[oldKey]; - } - } else { - // $FlowFixMe[incompatible-use] number or string is fine here - updated[oldKey] = copyWithRenameImpl( - // $FlowFixMe[incompatible-use] number or string is fine here - obj[oldKey], - oldPath, - newPath, - index + 1 - ); - } - return updated; - }; + overrideHookState = function (fiber, id, path, value) { + var hook = findHook(fiber, id); - var copyWithRename = function (obj, oldPath, newPath) { - if (oldPath.length !== newPath.length) { - warn("copyWithRename() expects paths of the same length"); + if (hook !== null) { + var newState = copyWithSet(hook.memoizedState, path, value); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - return; - } else { - for (var i = 0; i < newPath.length - 1; i++) { - if (oldPath[i] !== newPath[i]) { - warn( - "copyWithRename() expects paths to be the same except for the deepest key" - ); + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - return; - } - } - } + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; - return copyWithRenameImpl(obj, oldPath, newPath, 0); - }; + overrideHookStateDeletePath = function (fiber, id, path) { + var hook = findHook(fiber, id); - var copyWithSetImpl = function (obj, path, index, value) { - if (index >= path.length) { - return value; - } + if (hook !== null) { + var newState = copyWithDelete(hook.memoizedState, path); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - var key = path[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); // $FlowFixMe[incompatible-use] number or string is fine here + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - updated[key] = copyWithSetImpl(obj[key], path, index + 1, value); - return updated; - }; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; - var copyWithSet = function (obj, path, value) { - return copyWithSetImpl(obj, path, 0, value); - }; + overrideHookStateRenamePath = function (fiber, id, oldPath, newPath) { + var hook = findHook(fiber, id); - var findHook = function (fiber, id) { - // For now, the "id" of stateful hooks is just the stateful hook index. - // This may change in the future with e.g. nested hooks. - var currentHook = fiber.memoizedState; + if (hook !== null) { + var newState = copyWithRename(hook.memoizedState, oldPath, newPath); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - while (currentHook !== null && id > 0) { - currentHook = currentHook.next; - id--; - } + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - return currentHook; - }; // Support DevTools editable values for useState and useReducer. + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; // Support DevTools props for function components, forwardRef, memo, host components, etc. - overrideHookState = function (fiber, id, path, value) { - var hook = findHook(fiber, id); - if (hook !== null) { - var newState = copyWithSet(hook.memoizedState, path, value); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + overrideProps = function (fiber, path, value) { + fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value); - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - overrideHookStateDeletePath = function (fiber, id, path) { - var hook = findHook(fiber, id); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (hook !== null) { - var newState = copyWithDelete(hook.memoizedState, path); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + overridePropsDeletePath = function (fiber, path) { + fiber.pendingProps = copyWithDelete(fiber.memoizedProps, path); - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - overrideHookStateRenamePath = function (fiber, id, oldPath, newPath) { - var hook = findHook(fiber, id); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (hook !== null) { - var newState = copyWithRename(hook.memoizedState, oldPath, newPath); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + overridePropsRenamePath = function (fiber, oldPath, newPath) { + fiber.pendingProps = copyWithRename(fiber.memoizedProps, oldPath, newPath); - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; // Support DevTools props for function components, forwardRef, memo, host components, etc. + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - overrideProps = function (fiber, path, value) { - fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } + scheduleUpdate = function (fiber) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + setErrorHandler = function (newShouldErrorImpl) { + shouldErrorImpl = newShouldErrorImpl; + }; - overridePropsDeletePath = function (fiber, path) { - fiber.pendingProps = copyWithDelete(fiber.memoizedProps, path); + setSuspenseHandler = function (newShouldSuspendImpl) { + shouldSuspendImpl = newShouldSuspendImpl; + }; +} - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } +function findHostInstanceByFiber(fiber) { + var hostFiber = findCurrentHostFiber(fiber); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (hostFiber === null) { + return null; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + return hostFiber.stateNode; +} - overridePropsRenamePath = function (fiber, oldPath, newPath) { - fiber.pendingProps = copyWithRename( - fiber.memoizedProps, - oldPath, - newPath - ); +function emptyFindFiberByHostInstance(instance) { + return null; +} - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } +function getCurrentFiberForDevTools() { + return current; +} - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); +function injectIntoDevTools(devToolsConfig) { + var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance; + return injectInternals({ + bundleType: devToolsConfig.bundleType, + version: devToolsConfig.version, + rendererPackageName: devToolsConfig.rendererPackageName, + rendererConfig: devToolsConfig.rendererConfig, + overrideHookState: overrideHookState, + overrideHookStateDeletePath: overrideHookStateDeletePath, + overrideHookStateRenamePath: overrideHookStateRenamePath, + overrideProps: overrideProps, + overridePropsDeletePath: overridePropsDeletePath, + overridePropsRenamePath: overridePropsRenamePath, + setErrorHandler: setErrorHandler, + setSuspenseHandler: setSuspenseHandler, + scheduleUpdate: scheduleUpdate, + currentDispatcherRef: ReactSharedInternals, + findHostInstanceByFiber: findHostInstanceByFiber, + findFiberByHostInstance: findFiberByHostInstance || emptyFindFiberByHostInstance, + // React Refresh + findHostInstancesForRefresh: findHostInstancesForRefresh , + scheduleRefresh: scheduleRefresh , + scheduleRoot: scheduleRoot , + setRefreshHandler: setRefreshHandler , + // Enables DevTools to append owner stacks to error messages in DEV mode. + getCurrentFiber: getCurrentFiberForDevTools , + // Enables DevTools to detect reconciler version rather than renderer version + // which may not match for third party renderers. + reconcilerVersion: ReactVersion + }); +} - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; +var instanceCache = new Map(); - scheduleUpdate = function (fiber) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); +function getInstanceFromTag(tag) { + return instanceCache.get(tag) || null; +} - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; +function findHostInstance_DEPRECATED(componentOrHandle) { + { + var owner = ReactSharedInternals.owner; - setErrorHandler = function (newShouldErrorImpl) { - shouldErrorImpl = newShouldErrorImpl; - }; + if (owner !== null && owner.stateNode !== null) { + if (!owner.stateNode._warnedAboutRefsInRender) { + error('%s is accessing findNodeHandle inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentNameFromType(owner.type) || 'A component'); + } - setSuspenseHandler = function (newShouldSuspendImpl) { - shouldSuspendImpl = newShouldSuspendImpl; - }; + owner.stateNode._warnedAboutRefsInRender = true; } + } - function findHostInstanceByFiber(fiber) { - var hostFiber = findCurrentHostFiber(fiber); + if (componentOrHandle == null) { + return null; + } // For compatibility with Fabric instances - if (hostFiber === null) { - return null; - } - return hostFiber.stateNode; - } + if (componentOrHandle.canonical && componentOrHandle.canonical.publicInstance) { + // $FlowExpectedError[incompatible-return] Can't refine componentOrHandle as a Fabric instance + return componentOrHandle.canonical.publicInstance; + } // For compatibility with legacy renderer instances - function emptyFindFiberByHostInstance(instance) { - return null; - } - function getCurrentFiberForDevTools() { - return current; - } + if (componentOrHandle._nativeTag) { + // $FlowFixMe[incompatible-exact] Necessary when running Flow on Fabric + // $FlowFixMe[incompatible-return] + return componentOrHandle; + } - function injectIntoDevTools(devToolsConfig) { - var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance; - return injectInternals({ - bundleType: devToolsConfig.bundleType, - version: devToolsConfig.version, - rendererPackageName: devToolsConfig.rendererPackageName, - rendererConfig: devToolsConfig.rendererConfig, - overrideHookState: overrideHookState, - overrideHookStateDeletePath: overrideHookStateDeletePath, - overrideHookStateRenamePath: overrideHookStateRenamePath, - overrideProps: overrideProps, - overridePropsDeletePath: overridePropsDeletePath, - overridePropsRenamePath: overridePropsRenamePath, - setErrorHandler: setErrorHandler, - setSuspenseHandler: setSuspenseHandler, - scheduleUpdate: scheduleUpdate, - currentDispatcherRef: ReactSharedInternals, - findHostInstanceByFiber: findHostInstanceByFiber, - findFiberByHostInstance: - findFiberByHostInstance || emptyFindFiberByHostInstance, - // React Refresh - findHostInstancesForRefresh: findHostInstancesForRefresh, - scheduleRefresh: scheduleRefresh, - scheduleRoot: scheduleRoot, - setRefreshHandler: setRefreshHandler, - // Enables DevTools to append owner stacks to error messages in DEV mode. - getCurrentFiber: getCurrentFiberForDevTools, - // Enables DevTools to detect reconciler version rather than renderer version - // which may not match for third party renderers. - reconcilerVersion: ReactVersion - }); - } + var hostInstance; - var instanceCache = new Map(); + { + hostInstance = findHostInstanceWithWarning(componentOrHandle, 'findHostInstance_DEPRECATED'); + } // findHostInstance handles legacy vs. Fabric differences correctly + // $FlowFixMe[incompatible-exact] we need to fix the definition of `HostComponent` to use NativeMethods as an interface, not as a type. + // $FlowFixMe[incompatible-return] - function getInstanceFromTag(tag) { - return instanceCache.get(tag) || null; - } - function findHostInstance_DEPRECATED(componentOrHandle) { - { - var owner = ReactSharedInternals.owner; - - if (owner !== null && owner.stateNode !== null) { - if (!owner.stateNode._warnedAboutRefsInRender) { - error( - "%s is accessing findNodeHandle inside its render(). " + - "render() should be a pure function of props and state. It should " + - "never access something that requires stale data from the previous " + - "render, such as refs. Move this logic to componentDidMount and " + - "componentDidUpdate instead.", - getComponentNameFromType(owner.type) || "A component" - ); - } + return hostInstance; +} +function findNodeHandle(componentOrHandle) { + { + var owner = ReactSharedInternals.owner; - owner.stateNode._warnedAboutRefsInRender = true; - } + if (owner !== null && owner.stateNode !== null) { + if (!owner.stateNode._warnedAboutRefsInRender) { + error('%s is accessing findNodeHandle inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentNameFromType(owner.type) || 'A component'); } - if (componentOrHandle == null) { - return null; - } // For compatibility with Fabric instances - - if ( - componentOrHandle.canonical && - componentOrHandle.canonical.publicInstance - ) { - // $FlowExpectedError[incompatible-return] Can't refine componentOrHandle as a Fabric instance - return componentOrHandle.canonical.publicInstance; - } // For compatibility with legacy renderer instances + owner.stateNode._warnedAboutRefsInRender = true; + } + } - if (componentOrHandle._nativeTag) { - // $FlowFixMe[incompatible-exact] Necessary when running Flow on Fabric - // $FlowFixMe[incompatible-return] - return componentOrHandle; - } + if (componentOrHandle == null) { + return null; + } - var hostInstance; + if (typeof componentOrHandle === 'number') { + // Already a node handle + return componentOrHandle; + } // For compatibility with legacy renderer instances - { - hostInstance = findHostInstanceWithWarning( - componentOrHandle, - "findHostInstance_DEPRECATED" - ); - } // findHostInstance handles legacy vs. Fabric differences correctly - // $FlowFixMe[incompatible-exact] we need to fix the definition of `HostComponent` to use NativeMethods as an interface, not as a type. - // $FlowFixMe[incompatible-return] - return hostInstance; - } - function findNodeHandle(componentOrHandle) { - { - var owner = ReactSharedInternals.owner; - - if (owner !== null && owner.stateNode !== null) { - if (!owner.stateNode._warnedAboutRefsInRender) { - error( - "%s is accessing findNodeHandle inside its render(). " + - "render() should be a pure function of props and state. It should " + - "never access something that requires stale data from the previous " + - "render, such as refs. Move this logic to componentDidMount and " + - "componentDidUpdate instead.", - getComponentNameFromType(owner.type) || "A component" - ); - } + if (componentOrHandle._nativeTag) { + return componentOrHandle._nativeTag; + } // For compatibility with Fabric instances - owner.stateNode._warnedAboutRefsInRender = true; - } - } - if (componentOrHandle == null) { - return null; - } + if (componentOrHandle.canonical != null && componentOrHandle.canonical.nativeTag != null) { + return componentOrHandle.canonical.nativeTag; + } // For compatibility with Fabric public instances - if (typeof componentOrHandle === "number") { - // Already a node handle - return componentOrHandle; - } // For compatibility with legacy renderer instances - if (componentOrHandle._nativeTag) { - return componentOrHandle._nativeTag; - } // For compatibility with Fabric instances + var nativeTag = ReactNativePrivateInterface.getNativeTagFromPublicInstance(componentOrHandle); - if ( - componentOrHandle.canonical != null && - componentOrHandle.canonical.nativeTag != null - ) { - return componentOrHandle.canonical.nativeTag; - } // For compatibility with Fabric public instances + if (nativeTag) { + return nativeTag; + } - var nativeTag = - ReactNativePrivateInterface.getNativeTagFromPublicInstance( - componentOrHandle - ); + var hostInstance; - if (nativeTag) { - return nativeTag; - } + { + hostInstance = findHostInstanceWithWarning(componentOrHandle, 'findNodeHandle'); + } - var hostInstance; + if (hostInstance == null) { + // $FlowFixMe[incompatible-return] Flow limitation in refining an opaque type + return hostInstance; + } - { - hostInstance = findHostInstanceWithWarning( - componentOrHandle, - "findNodeHandle" - ); - } + if (hostInstance._nativeTag != null) { + // $FlowFixMe[incompatible-return] For compatibility with legacy renderer instances + return hostInstance._nativeTag; + } // $FlowFixMe[incompatible-call] Necessary when running Flow on the legacy renderer - if (hostInstance == null) { - // $FlowFixMe[incompatible-return] Flow limitation in refining an opaque type - return hostInstance; - } - if (hostInstance._nativeTag != null) { - // $FlowFixMe[incompatible-return] For compatibility with legacy renderer instances - return hostInstance._nativeTag; - } // $FlowFixMe[incompatible-call] Necessary when running Flow on the legacy renderer + return ReactNativePrivateInterface.getNativeTagFromPublicInstance(hostInstance); +} +function dispatchCommand(handle, command, args) { + var nativeTag = handle._nativeTag != null ? handle._nativeTag : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); - return ReactNativePrivateInterface.getNativeTagFromPublicInstance( - hostInstance - ); + if (nativeTag == null) { + { + error("dispatchCommand was called with a ref that isn't a " + 'native component. Use React.forwardRef to get access to the underlying native component'); } - function dispatchCommand(handle, command, args) { - var nativeTag = - handle._nativeTag != null - ? handle._nativeTag - : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); - if (nativeTag == null) { - { - error( - "dispatchCommand was called with a ref that isn't a " + - "native component. Use React.forwardRef to get access to the underlying native component" - ); - } + return; + } - return; - } + var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); - var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); + if (node != null) { + nativeFabricUIManager.dispatchCommand(node, command, args); + } else { + ReactNativePrivateInterface.UIManager.dispatchViewManagerCommand(nativeTag, command, args); + } +} +function sendAccessibilityEvent(handle, eventType) { + var nativeTag = handle._nativeTag != null ? handle._nativeTag : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); - if (node != null) { - nativeFabricUIManager.dispatchCommand(node, command, args); - } else { - ReactNativePrivateInterface.UIManager.dispatchViewManagerCommand( - nativeTag, - command, - args - ); - } + if (nativeTag == null) { + { + error("sendAccessibilityEvent was called with a ref that isn't a " + 'native component. Use React.forwardRef to get access to the underlying native component'); } - function sendAccessibilityEvent(handle, eventType) { - var nativeTag = - handle._nativeTag != null - ? handle._nativeTag - : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); - - if (nativeTag == null) { - { - error( - "sendAccessibilityEvent was called with a ref that isn't a " + - "native component. Use React.forwardRef to get access to the underlying native component" - ); - } - return; - } + return; + } - var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); + var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); - if (node != null) { - nativeFabricUIManager.sendAccessibilityEvent(node, eventType); - } else { - ReactNativePrivateInterface.legacySendAccessibilityEvent( - nativeTag, - eventType - ); - } - } - function getNodeFromInternalInstanceHandle(internalInstanceHandle) { - return ( - // $FlowExpectedError[incompatible-return] internalInstanceHandle is opaque but we need to make an exception here. - internalInstanceHandle && // $FlowExpectedError[incompatible-return] - internalInstanceHandle.stateNode && // $FlowExpectedError[incompatible-use] - internalInstanceHandle.stateNode.node - ); - } // Should have been PublicInstance from ReactFiberConfigFabric - // Should have been PublicInstance from ReactFiberConfigNative - // Remove this once Paper is no longer supported and DOM Node API are enabled by default in RN. - - function isChildPublicInstance(parentInstance, childInstance) { - { - // Paper - if ( - // $FlowExpectedError[incompatible-type] - // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. - parentInstance._internalFiberInstanceHandleDEV && // $FlowExpectedError[incompatible-type] - // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. - childInstance._internalFiberInstanceHandleDEV - ) { - return doesFiberContain( - // $FlowExpectedError[incompatible-call] - parentInstance._internalFiberInstanceHandleDEV, // $FlowExpectedError[incompatible-call] - childInstance._internalFiberInstanceHandleDEV - ); - } - - var parentInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for parentInstance should have been PublicInstance from ReactFiberConfigFabric. - ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance( - parentInstance - ); - var childInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for childInstance should have been PublicInstance from ReactFiberConfigFabric. - ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance( - childInstance - ); // Fabric - - if ( - parentInternalInstanceHandle != null && - childInternalInstanceHandle != null - ) { - return doesFiberContain( - parentInternalInstanceHandle, - childInternalInstanceHandle - ); - } // Means that one instance is from Fabric and other is from Paper. + if (node != null) { + nativeFabricUIManager.sendAccessibilityEvent(node, eventType); + } else { + ReactNativePrivateInterface.legacySendAccessibilityEvent(nativeTag, eventType); + } +} +function getNodeFromInternalInstanceHandle(internalInstanceHandle) { + return (// $FlowExpectedError[incompatible-return] internalInstanceHandle is opaque but we need to make an exception here. + internalInstanceHandle && // $FlowExpectedError[incompatible-return] + internalInstanceHandle.stateNode && // $FlowExpectedError[incompatible-use] + internalInstanceHandle.stateNode.node + ); +} // Should have been PublicInstance from ReactFiberConfigFabric +// Should have been PublicInstance from ReactFiberConfigNative +// Remove this once Paper is no longer supported and DOM Node API are enabled by default in RN. + +function isChildPublicInstance(parentInstance, childInstance) { + { + // Paper + if ( // $FlowExpectedError[incompatible-type] + // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. + parentInstance._internalFiberInstanceHandleDEV && // $FlowExpectedError[incompatible-type] + // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. + childInstance._internalFiberInstanceHandleDEV) { + return doesFiberContain( // $FlowExpectedError[incompatible-call] + parentInstance._internalFiberInstanceHandleDEV, // $FlowExpectedError[incompatible-call] + childInstance._internalFiberInstanceHandleDEV); + } + + var parentInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for parentInstance should have been PublicInstance from ReactFiberConfigFabric. + ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance(parentInstance); + var childInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for childInstance should have been PublicInstance from ReactFiberConfigFabric. + ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance(childInstance); // Fabric + + if (parentInternalInstanceHandle != null && childInternalInstanceHandle != null) { + return doesFiberContain(parentInternalInstanceHandle, childInternalInstanceHandle); + } // Means that one instance is from Fabric and other is from Paper. + + + return false; + } +} - return false; - } - } +var emptyObject = {}; - var emptyObject = {}; +{ + Object.freeze(emptyObject); +} // $FlowFixMe[missing-local-annot] - { - Object.freeze(emptyObject); - } // $FlowFixMe[missing-local-annot] - function createHierarchy(fiberHierarchy) { - return fiberHierarchy.map(function (fiber) { +function createHierarchy(fiberHierarchy) { + return fiberHierarchy.map(function (fiber) { + return { + name: getComponentNameFromType(fiber.type), + getInspectorData: function (findNodeHandle) { return { - name: getComponentNameFromType(fiber.type), - getInspectorData: function (findNodeHandle) { - return { - props: getHostProps(fiber), - measure: function (callback) { - // If this is Fabric, we'll find a shadow node and use that to measure. - var hostFiber = findCurrentHostFiber(fiber); - var node = - hostFiber != null && - hostFiber.stateNode !== null && - hostFiber.stateNode.node; - - if (node) { - nativeFabricUIManager.measure(node, callback); - } else { - return ReactNativePrivateInterface.UIManager.measure( - getHostNode(fiber, findNodeHandle), - callback - ); - } - } - }; + props: getHostProps(fiber), + measure: function (callback) { + // If this is Fabric, we'll find a shadow node and use that to measure. + var hostFiber = findCurrentHostFiber(fiber); + var node = hostFiber != null && hostFiber.stateNode !== null && hostFiber.stateNode.node; + + if (node) { + nativeFabricUIManager.measure(node, callback); + } else { + return ReactNativePrivateInterface.UIManager.measure(getHostNode(fiber, findNodeHandle), callback); + } } }; - }); - } // $FlowFixMe[missing-local-annot] - - function getHostNode(fiber, findNodeHandle) { - { - var hostNode; // look for children first for the hostNode - // as composite fibers do not have a hostNode - - while (fiber) { - if (fiber.stateNode !== null && fiber.tag === HostComponent) { - hostNode = findNodeHandle(fiber.stateNode); - } + } + }; + }); +} // $FlowFixMe[missing-local-annot] - if (hostNode) { - return hostNode; - } - fiber = fiber.child; - } +function getHostNode(fiber, findNodeHandle) { + { + var hostNode; // look for children first for the hostNode + // as composite fibers do not have a hostNode - return null; + while (fiber) { + if (fiber.stateNode !== null && fiber.tag === HostComponent) { + hostNode = findNodeHandle(fiber.stateNode); } - } // $FlowFixMe[missing-local-annot] - function getHostProps(fiber) { - var host = findCurrentHostFiber(fiber); - - if (host) { - return host.memoizedProps || emptyObject; + if (hostNode) { + return hostNode; } - return emptyObject; + fiber = fiber.child; } - function getInspectorDataForInstance(closestInstance) { - { - // Handle case where user clicks outside of ReactNative - if (!closestInstance) { - return { - hierarchy: [], - props: emptyObject, - selectedIndex: null, - componentStack: "" - }; - } + return null; + } +} // $FlowFixMe[missing-local-annot] - var fiber = findCurrentFiberUsingSlowPath(closestInstance); - if (fiber === null) { - // Might not be currently mounted. - return { - hierarchy: [], - props: emptyObject, - selectedIndex: null, - componentStack: "" - }; - } +function getHostProps(fiber) { + var host = findCurrentHostFiber(fiber); - var fiberHierarchy = getOwnerHierarchy(fiber); - var instance = lastNonHostInstance(fiberHierarchy); - var hierarchy = createHierarchy(fiberHierarchy); - var props = getHostProps(instance); - var selectedIndex = fiberHierarchy.indexOf(instance); - var componentStack = getStackByFiberInDevAndProd(fiber); - return { - closestInstance: instance, - hierarchy: hierarchy, - props: props, - selectedIndex: selectedIndex, - componentStack: componentStack - }; - } - } + if (host) { + return host.memoizedProps || emptyObject; + } - function getOwnerHierarchy(instance) { - var hierarchy = []; - traverseOwnerTreeUp(hierarchy, instance); - return hierarchy; - } // $FlowFixMe[missing-local-annot] + return emptyObject; +} - function lastNonHostInstance(hierarchy) { - for (var i = hierarchy.length - 1; i > 1; i--) { - var instance = hierarchy[i]; +function getInspectorDataForInstance(closestInstance) { + { + // Handle case where user clicks outside of ReactNative + if (!closestInstance) { + return { + hierarchy: [], + props: emptyObject, + selectedIndex: null, + componentStack: '' + }; + } - if (instance.tag !== HostComponent) { - return instance; - } - } + var fiber = findCurrentFiberUsingSlowPath(closestInstance); - return hierarchy[0]; + if (fiber === null) { + // Might not be currently mounted. + return { + hierarchy: [], + props: emptyObject, + selectedIndex: null, + componentStack: '' + }; } - function traverseOwnerTreeUp(hierarchy, instance) { - { - hierarchy.unshift(instance); - var owner = instance._debugOwner; + var fiberHierarchy = getOwnerHierarchy(fiber); + var instance = lastNonHostInstance(fiberHierarchy); + var hierarchy = createHierarchy(fiberHierarchy); + var props = getHostProps(instance); + var selectedIndex = fiberHierarchy.indexOf(instance); + var componentStack = getStackByFiberInDevAndProd(fiber); + return { + closestInstance: instance, + hierarchy: hierarchy, + props: props, + selectedIndex: selectedIndex, + componentStack: componentStack + }; + } +} - if (owner != null && typeof owner.tag === "number") { - traverseOwnerTreeUp(hierarchy, owner); - } - } +function getOwnerHierarchy(instance) { + var hierarchy = []; + traverseOwnerTreeUp(hierarchy, instance); + return hierarchy; +} // $FlowFixMe[missing-local-annot] + + +function lastNonHostInstance(hierarchy) { + for (var i = hierarchy.length - 1; i > 1; i--) { + var instance = hierarchy[i]; + + if (instance.tag !== HostComponent) { + return instance; } + } - function getInspectorDataForViewTag(viewTag) { - { - var closestInstance = getInstanceFromTag(viewTag); - return getInspectorDataForInstance(closestInstance); - } + return hierarchy[0]; +} + +function traverseOwnerTreeUp(hierarchy, instance) { + { + hierarchy.unshift(instance); + var owner = instance._debugOwner; + + if (owner != null && typeof owner.tag === 'number') { + traverseOwnerTreeUp(hierarchy, owner); } + } +} - function getInspectorDataForViewAtPoint( - findNodeHandle, - inspectedView, - locationX, - locationY, - callback - ) { - { - var closestInstance = null; - var fabricNode = - ReactNativePrivateInterface.getNodeFromPublicInstance(inspectedView); - - if (fabricNode) { - // For Fabric we can look up the instance handle directly and measure it. - nativeFabricUIManager.findNodeAtPoint( - fabricNode, - locationX, - locationY, - function (internalInstanceHandle) { - var node = - internalInstanceHandle != null - ? getNodeFromInternalInstanceHandle(internalInstanceHandle) - : null; - - if (internalInstanceHandle == null || node == null) { - callback( - assign( - { - pointerY: locationY, - frame: { - left: 0, - top: 0, - width: 0, - height: 0 - } - }, - getInspectorDataForInstance(closestInstance) - ) - ); - return; - } +function getInspectorDataForViewTag(viewTag) { + { + var closestInstance = getInstanceFromTag(viewTag); + return getInspectorDataForInstance(closestInstance); + } +} - closestInstance = - internalInstanceHandle.stateNode.canonical - .internalInstanceHandle; // Note: this is deprecated and we want to remove it ASAP. Keeping it here for React DevTools compatibility for now. - - var nativeViewTag = - internalInstanceHandle.stateNode.canonical.nativeTag; - nativeFabricUIManager.measure( - node, - function (x, y, width, height, pageX, pageY) { - var inspectorData = - getInspectorDataForInstance(closestInstance); - callback( - assign({}, inspectorData, { - pointerY: locationY, - frame: { - left: pageX, - top: pageY, - width: width, - height: height - }, - touchedViewTag: nativeViewTag - }) - ); - } - ); +function getInspectorDataForViewAtPoint(findNodeHandle, inspectedView, locationX, locationY, callback) { + { + var closestInstance = null; + var fabricNode = ReactNativePrivateInterface.getNodeFromPublicInstance(inspectedView); + + if (fabricNode) { + // For Fabric we can look up the instance handle directly and measure it. + nativeFabricUIManager.findNodeAtPoint(fabricNode, locationX, locationY, function (internalInstanceHandle) { + var node = internalInstanceHandle != null ? getNodeFromInternalInstanceHandle(internalInstanceHandle) : null; + + if (internalInstanceHandle == null || node == null) { + callback(assign({ + pointerY: locationY, + frame: { + left: 0, + top: 0, + width: 0, + height: 0 } - ); - } else if (inspectedView._internalFiberInstanceHandleDEV != null) { - // For Paper we fall back to the old strategy using the React tag. - ReactNativePrivateInterface.UIManager.findSubviewIn( - findNodeHandle(inspectedView), - [locationX, locationY], - function (nativeViewTag, left, top, width, height) { - var inspectorData = getInspectorDataForInstance( - getInstanceFromTag(nativeViewTag) - ); - callback( - assign({}, inspectorData, { - pointerY: locationY, - frame: { - left: left, - top: top, - width: width, - height: height - }, - touchedViewTag: nativeViewTag - }) - ); - } - ); - } else { - error( - "getInspectorDataForViewAtPoint expects to receive a host component" - ); - + }, getInspectorDataForInstance(closestInstance))); return; } - } - } - if ( - typeof ReactNativePrivateInterface.ReactFiberErrorDialog - .showErrorDialog !== "function" - ) { - throw new Error( - "Expected ReactFiberErrorDialog.showErrorDialog to be a function." - ); + closestInstance = internalInstanceHandle.stateNode.canonical.internalInstanceHandle; // Note: this is deprecated and we want to remove it ASAP. Keeping it here for React DevTools compatibility for now. + + var nativeViewTag = internalInstanceHandle.stateNode.canonical.nativeTag; + nativeFabricUIManager.measure(node, function (x, y, width, height, pageX, pageY) { + var inspectorData = getInspectorDataForInstance(closestInstance); + callback(assign({}, inspectorData, { + pointerY: locationY, + frame: { + left: pageX, + top: pageY, + width: width, + height: height + }, + touchedViewTag: nativeViewTag + })); + }); + }); + } else if (inspectedView._internalFiberInstanceHandleDEV != null) { + // For Paper we fall back to the old strategy using the React tag. + ReactNativePrivateInterface.UIManager.findSubviewIn(findNodeHandle(inspectedView), [locationX, locationY], function (nativeViewTag, left, top, width, height) { + var inspectorData = getInspectorDataForInstance(getInstanceFromTag(nativeViewTag)); + callback(assign({}, inspectorData, { + pointerY: locationY, + frame: { + left: left, + top: top, + width: width, + height: height + }, + touchedViewTag: nativeViewTag + })); + }); + } else { + error('getInspectorDataForViewAtPoint expects to receive a host component'); + + return; } + } +} - function nativeOnUncaughtError(error, errorInfo) { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var logError = - ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ - errorBoundary: null, - error: error, - componentStack: componentStack - }); // Allow injected showErrorDialog() to prevent default console.error logging. - // This enables renderers like ReactNative to better manage redbox behavior. +if (typeof ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog !== 'function') { + throw new Error('Expected ReactFiberErrorDialog.showErrorDialog to be a function.'); +} - if (logError === false) { - return; - } +function nativeOnUncaughtError(error, errorInfo) { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var logError = ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ + errorBoundary: null, + error: error, + componentStack: componentStack + }); // Allow injected showErrorDialog() to prevent default console.error logging. + // This enables renderers like ReactNative to better manage redbox behavior. - defaultOnUncaughtError(error, errorInfo); - } + if (logError === false) { + return; + } - function nativeOnCaughtError(error, errorInfo) { - var errorBoundary = errorInfo.errorBoundary; - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var logError = - ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ - errorBoundary: errorBoundary, - error: error, - componentStack: componentStack - }); // Allow injected showErrorDialog() to prevent default console.error logging. - // This enables renderers like ReactNative to better manage redbox behavior. + defaultOnUncaughtError(error, errorInfo); +} - if (logError === false) { - return; - } +function nativeOnCaughtError(error, errorInfo) { + var errorBoundary = errorInfo.errorBoundary; + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var logError = ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ + errorBoundary: errorBoundary, + error: error, + componentStack: componentStack + }); // Allow injected showErrorDialog() to prevent default console.error logging. + // This enables renderers like ReactNative to better manage redbox behavior. + + if (logError === false) { + return; + } + + defaultOnCaughtError(error, errorInfo); +} - defaultOnCaughtError(error, errorInfo); - } +function render(element, containerTag, callback, concurrentRoot, options) { - function render(element, containerTag, callback, concurrentRoot, options) { - var root = roots.get(containerTag); + var root = roots.get(containerTag); - if (!root) { - // TODO: these defaults are for backwards compatibility. - // Once RN implements these options internally, - // we can remove the defaults and ReactFiberErrorDialog. - var onUncaughtError = nativeOnUncaughtError; - var onCaughtError = nativeOnCaughtError; - var onRecoverableError = defaultOnRecoverableError; + if (!root) { + // TODO: these defaults are for backwards compatibility. + // Once RN implements these options internally, + // we can remove the defaults and ReactFiberErrorDialog. + var onUncaughtError = nativeOnUncaughtError; + var onCaughtError = nativeOnCaughtError; + var onRecoverableError = defaultOnRecoverableError; - if (options && options.onUncaughtError !== undefined) { - onUncaughtError = options.onUncaughtError; - } + if (options && options.onUncaughtError !== undefined) { + onUncaughtError = options.onUncaughtError; + } - if (options && options.onCaughtError !== undefined) { - onCaughtError = options.onCaughtError; - } + if (options && options.onCaughtError !== undefined) { + onCaughtError = options.onCaughtError; + } - if (options && options.onRecoverableError !== undefined) { - onRecoverableError = options.onRecoverableError; - } // TODO (bvaughn): If we decide to keep the wrapper component, - // We could create a wrapper for containerTag as well to reduce special casing. + if (options && options.onRecoverableError !== undefined) { + onRecoverableError = options.onRecoverableError; + } // TODO (bvaughn): If we decide to keep the wrapper component, + // We could create a wrapper for containerTag as well to reduce special casing. - root = createContainer( - containerTag, - concurrentRoot ? ConcurrentRoot : LegacyRoot, - null, - false, - null, - "", - onUncaughtError, - onCaughtError, - onRecoverableError, - null - ); - roots.set(containerTag, root); - } - updateContainer(element, root, null, callback); - return getPublicRootInstance(root); - } // $FlowFixMe[missing-this-annot] + root = createContainer(containerTag, concurrentRoot ? ConcurrentRoot : LegacyRoot, null, false, null, '', onUncaughtError, onCaughtError, onRecoverableError, null); + roots.set(containerTag, root); + } - function unmountComponentAtNode(containerTag) { - this.stopSurface(containerTag); - } + updateContainer(element, root, null, callback); + return getPublicRootInstance(root); +} // $FlowFixMe[missing-this-annot] - function stopSurface(containerTag) { - var root = roots.get(containerTag); - if (root) { - // TODO: Is it safe to reset this now or should I wait since this unmount could be deferred? - updateContainer(null, root, null, function () { - roots.delete(containerTag); - }); - } - } +function unmountComponentAtNode(containerTag) { + this.stopSurface(containerTag); +} - function createPortal(children, containerTag) { - var key = - arguments.length > 2 && arguments[2] !== undefined - ? arguments[2] - : null; - return createPortal$1(children, containerTag, null, key); - } +function stopSurface(containerTag) { + var root = roots.get(containerTag); - setBatchingImplementation(batchedUpdates); - var roots = new Map(); - injectIntoDevTools({ - // $FlowExpectedError[incompatible-call] The type of `Instance` in `getClosestInstanceFromNode` does not match in Fabric and the legacy renderer, so it fails to typecheck here. - findFiberByHostInstance: getInstanceFromNode, - bundleType: 1, - version: ReactVersion, - rendererPackageName: "react-native-renderer", - rendererConfig: { - getInspectorDataForInstance: getInspectorDataForInstance, - getInspectorDataForViewTag: getInspectorDataForViewTag, - getInspectorDataForViewAtPoint: getInspectorDataForViewAtPoint.bind( - null, - findNodeHandle - ) - } + if (root) { + // TODO: Is it safe to reset this now or should I wait since this unmount could be deferred? + updateContainer(null, root, null, function () { + roots.delete(containerTag); }); + } +} - exports.createPortal = createPortal; - exports.dispatchCommand = dispatchCommand; - exports.findHostInstance_DEPRECATED = findHostInstance_DEPRECATED; - exports.findNodeHandle = findNodeHandle; - exports.getInspectorDataForInstance = getInspectorDataForInstance; - exports.getNodeFromInternalInstanceHandle = - getNodeFromInternalInstanceHandle; - exports.getPublicInstanceFromInternalInstanceHandle = - getPublicInstanceFromInternalInstanceHandle; - exports.isChildPublicInstance = isChildPublicInstance; - exports.render = render; - exports.sendAccessibilityEvent = sendAccessibilityEvent; - exports.stopSurface = stopSurface; - exports.unmountComponentAtNode = unmountComponentAtNode; - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); - } +function createPortal(children, containerTag) { + var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null; + return createPortal$1(children, containerTag, null, key); +} + +setBatchingImplementation(batchedUpdates); +var roots = new Map(); +injectIntoDevTools({ + // $FlowExpectedError[incompatible-call] The type of `Instance` in `getClosestInstanceFromNode` does not match in Fabric and the legacy renderer, so it fails to typecheck here. + findFiberByHostInstance: getInstanceFromNode, + bundleType: 1 , + version: ReactVersion, + rendererPackageName: 'react-native-renderer', + rendererConfig: { + getInspectorDataForInstance: getInspectorDataForInstance, + getInspectorDataForViewTag: getInspectorDataForViewTag, + getInspectorDataForViewAtPoint: getInspectorDataForViewAtPoint.bind(null, findNodeHandle) + } +}); + +exports.createPortal = createPortal; +exports.dispatchCommand = dispatchCommand; +exports.findHostInstance_DEPRECATED = findHostInstance_DEPRECATED; +exports.findNodeHandle = findNodeHandle; +exports.getInspectorDataForInstance = getInspectorDataForInstance; +exports.getNodeFromInternalInstanceHandle = getNodeFromInternalInstanceHandle; +exports.getPublicInstanceFromInternalInstanceHandle = getPublicInstanceFromInternalInstanceHandle; +exports.isChildPublicInstance = isChildPublicInstance; +exports.render = render; +exports.sendAccessibilityEvent = sendAccessibilityEvent; +exports.stopSurface = stopSurface; +exports.unmountComponentAtNode = unmountComponentAtNode; + /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); +} + })(); } diff --git a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js index 4dcdf67ad4c2e..6140888aa1024 100644 --- a/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js +++ b/compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/implementations/ReactNativeRenderer-dev.fb.js @@ -7,1411 +7,1273 @@ * @noflow * @nolint * @preventMunge - * @generated SignedSource<> + * @generated SignedSource<<3659a427365aaec7f1c22e3be8b66f08>> */ -"use strict"; +'use strict'; if (__DEV__) { - (function () { - "use strict"; - - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); - } - require("react-native/Libraries/ReactPrivate/ReactNativePrivateInitializeCore"); - var React = require("react"); - var ReactNativePrivateInterface = require("react-native/Libraries/ReactPrivate/ReactNativePrivateInterface"); - var dynamicFlagsUntyped = require("ReactNativeInternalFeatureFlags"); - var Scheduler = require("scheduler"); - - var ReactSharedInternals = - React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; - - var suppressWarning = false; - function setSuppressWarning(newSuppressWarning) { - { - suppressWarning = newSuppressWarning; - } - } // In DEV, calls to console.warn and console.error get replaced - // by calls to these methods by a Babel plugin. - // - // In PROD (or in packages without access to React internals), - // they are left as they are instead. + (function() { - function warn(format) { - { - if (!suppressWarning) { - for ( - var _len = arguments.length, - args = new Array(_len > 1 ? _len - 1 : 0), - _key = 1; - _key < _len; - _key++ - ) { - args[_key - 1] = arguments[_key]; - } + 'use strict'; - printWarning("warn", format, args); - } +/* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStart(new Error()); +} + require('react-native/Libraries/ReactPrivate/ReactNativePrivateInitializeCore'); +var React = require('react'); +var ReactNativePrivateInterface = require('react-native/Libraries/ReactPrivate/ReactNativePrivateInterface'); +var dynamicFlagsUntyped = require('ReactNativeInternalFeatureFlags'); +var Scheduler = require('scheduler'); + +var ReactSharedInternals = React.__CLIENT_INTERNALS_DO_NOT_USE_OR_WARN_USERS_THEY_CANNOT_UPGRADE; + +var suppressWarning = false; +function setSuppressWarning(newSuppressWarning) { + { + suppressWarning = newSuppressWarning; + } +} // In DEV, calls to console.warn and console.error get replaced +// by calls to these methods by a Babel plugin. +// +// In PROD (or in packages without access to React internals), +// they are left as they are instead. + +function warn(format) { + { + if (!suppressWarning) { + for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) { + args[_key - 1] = arguments[_key]; + } + + printWarning('warn', format, args); + } + } +} +function error(format) { + { + if (!suppressWarning) { + for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) { + args[_key2 - 1] = arguments[_key2]; } - } - function error(format) { - { - if (!suppressWarning) { - for ( - var _len2 = arguments.length, - args = new Array(_len2 > 1 ? _len2 - 1 : 0), - _key2 = 1; - _key2 < _len2; - _key2++ - ) { - args[_key2 - 1] = arguments[_key2]; - } - printWarning("error", format, args); - } - } + printWarning('error', format, args); } + } +} - function printWarning(level, format, args) { - // When changing this logic, you might want to also - // update consoleWithStackDev.www.js as well. - { - var stack = ReactSharedInternals.getStackAddendum(); +function printWarning(level, format, args) { + // When changing this logic, you might want to also + // update consoleWithStackDev.www.js as well. + { + var stack = ReactSharedInternals.getStackAddendum(); - if (stack !== "") { - format += "%s"; - args = args.concat([stack]); - } // eslint-disable-next-line react-internal/safe-string-coercion + if (stack !== '') { + format += '%s'; + args = args.concat([stack]); + } // eslint-disable-next-line react-internal/safe-string-coercion - var argsWithFormat = args.map(function (item) { - return String(item); - }); // Careful: RN currently depends on this prefix - argsWithFormat.unshift("Warning: " + format); // We intentionally don't use spread (or .apply) directly because it - // breaks IE9: https://github.com/facebook/react/issues/13610 - // eslint-disable-next-line react-internal/no-production-logging + var argsWithFormat = args.map(function (item) { + return String(item); + }); // Careful: RN currently depends on this prefix - Function.prototype.apply.call(console[level], console, argsWithFormat); - } - } + argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it + // breaks IE9: https://github.com/facebook/react/issues/13610 + // eslint-disable-next-line react-internal/no-production-logging - var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare + Function.prototype.apply.call(console[level], console, argsWithFormat); + } +} - function isArray(a) { - return isArrayImpl(a); - } +var isArrayImpl = Array.isArray; // eslint-disable-next-line no-redeclare - var hasError = false; - var caughtError = null; - var getFiberCurrentPropsFromNode$1 = null; - var getInstanceFromNode = null; - var getNodeFromInstance = null; - function setComponentTree( - getFiberCurrentPropsFromNodeImpl, - getInstanceFromNodeImpl, - getNodeFromInstanceImpl - ) { - getFiberCurrentPropsFromNode$1 = getFiberCurrentPropsFromNodeImpl; - getInstanceFromNode = getInstanceFromNodeImpl; - getNodeFromInstance = getNodeFromInstanceImpl; +function isArray(a) { + return isArrayImpl(a); +} - { - if (!getNodeFromInstance || !getInstanceFromNode) { - error( - "Injected " + - "module is missing getNodeFromInstance or getInstanceFromNode." - ); - } - } - } +var hasError = false; +var caughtError = null; +var getFiberCurrentPropsFromNode$1 = null; +var getInstanceFromNode = null; +var getNodeFromInstance = null; +function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) { + getFiberCurrentPropsFromNode$1 = getFiberCurrentPropsFromNodeImpl; + getInstanceFromNode = getInstanceFromNodeImpl; + getNodeFromInstance = getNodeFromInstanceImpl; + + { + if (!getNodeFromInstance || !getInstanceFromNode) { + error('Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.'); + } + } +} - function validateEventDispatches(event) { - { - var dispatchListeners = event._dispatchListeners; - var dispatchInstances = event._dispatchInstances; - var listenersIsArr = isArray(dispatchListeners); - var listenersLen = listenersIsArr - ? dispatchListeners.length - : dispatchListeners - ? 1 - : 0; - var instancesIsArr = isArray(dispatchInstances); - var instancesLen = instancesIsArr - ? dispatchInstances.length - : dispatchInstances - ? 1 - : 0; - - if ( - instancesIsArr !== listenersIsArr || - instancesLen !== listenersLen - ) { - error("EventPluginUtils: Invalid `event`."); - } - } +function validateEventDispatches(event) { + { + var dispatchListeners = event._dispatchListeners; + var dispatchInstances = event._dispatchInstances; + var listenersIsArr = isArray(dispatchListeners); + var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0; + var instancesIsArr = isArray(dispatchInstances); + var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0; + + if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) { + error('EventPluginUtils: Invalid `event`.'); } - /** - * Dispatch the event to the listener. - * @param {SyntheticEvent} event SyntheticEvent to handle - * @param {function} listener Application-level callback - * @param {*} inst Internal component instance - */ + } +} +/** + * Dispatch the event to the listener. + * @param {SyntheticEvent} event SyntheticEvent to handle + * @param {function} listener Application-level callback + * @param {*} inst Internal component instance + */ - function executeDispatch(event, listener, inst) { - event.currentTarget = getNodeFromInstance(inst); - try { - listener(event); - } catch (error) { - if (!hasError) { - hasError = true; - caughtError = error; - } - } +function executeDispatch(event, listener, inst) { + event.currentTarget = getNodeFromInstance(inst); - event.currentTarget = null; + try { + listener(event); + } catch (error) { + if (!hasError) { + hasError = true; + caughtError = error; } - /** - * Standard/simple iteration through an event's collected dispatches. - */ + } - function executeDispatchesInOrder(event) { - var dispatchListeners = event._dispatchListeners; - var dispatchInstances = event._dispatchInstances; + event.currentTarget = null; +} +/** + * Standard/simple iteration through an event's collected dispatches. + */ - { - validateEventDispatches(event); - } +function executeDispatchesInOrder(event) { + var dispatchListeners = event._dispatchListeners; + var dispatchInstances = event._dispatchInstances; - if (isArray(dispatchListeners)) { - for (var i = 0; i < dispatchListeners.length; i++) { - if (event.isPropagationStopped()) { - break; - } // Listeners and Instances are two parallel arrays that are always in sync. + { + validateEventDispatches(event); + } - executeDispatch(event, dispatchListeners[i], dispatchInstances[i]); - } - } else if (dispatchListeners) { - executeDispatch(event, dispatchListeners, dispatchInstances); - } + if (isArray(dispatchListeners)) { + for (var i = 0; i < dispatchListeners.length; i++) { + if (event.isPropagationStopped()) { + break; + } // Listeners and Instances are two parallel arrays that are always in sync. - event._dispatchListeners = null; - event._dispatchInstances = null; - } - /** - * Standard/simple iteration through an event's collected dispatches, but stops - * at the first dispatch execution returning true, and returns that id. - * - * @return {?string} id of the first dispatch execution who's listener returns - * true, or null if no listener returned true. - */ - function executeDispatchesInOrderStopAtTrueImpl(event) { - var dispatchListeners = event._dispatchListeners; - var dispatchInstances = event._dispatchInstances; + executeDispatch(event, dispatchListeners[i], dispatchInstances[i]); + } + } else if (dispatchListeners) { + executeDispatch(event, dispatchListeners, dispatchInstances); + } - { - validateEventDispatches(event); - } + event._dispatchListeners = null; + event._dispatchInstances = null; +} +/** + * Standard/simple iteration through an event's collected dispatches, but stops + * at the first dispatch execution returning true, and returns that id. + * + * @return {?string} id of the first dispatch execution who's listener returns + * true, or null if no listener returned true. + */ - if (isArray(dispatchListeners)) { - for (var i = 0; i < dispatchListeners.length; i++) { - if (event.isPropagationStopped()) { - break; - } // Listeners and Instances are two parallel arrays that are always in sync. +function executeDispatchesInOrderStopAtTrueImpl(event) { + var dispatchListeners = event._dispatchListeners; + var dispatchInstances = event._dispatchInstances; - if (dispatchListeners[i](event, dispatchInstances[i])) { - return dispatchInstances[i]; - } - } - } else if (dispatchListeners) { - if (dispatchListeners(event, dispatchInstances)) { - return dispatchInstances; - } - } + { + validateEventDispatches(event); + } - return null; - } - /** - * @see executeDispatchesInOrderStopAtTrueImpl - */ + if (isArray(dispatchListeners)) { + for (var i = 0; i < dispatchListeners.length; i++) { + if (event.isPropagationStopped()) { + break; + } // Listeners and Instances are two parallel arrays that are always in sync. - function executeDispatchesInOrderStopAtTrue(event) { - var ret = executeDispatchesInOrderStopAtTrueImpl(event); - event._dispatchInstances = null; - event._dispatchListeners = null; - return ret; - } - /** - * Execution of a "direct" dispatch - there must be at most one dispatch - * accumulated on the event or it is considered an error. It doesn't really make - * sense for an event with multiple dispatches (bubbled) to keep track of the - * return values at each dispatch execution, but it does tend to make sense when - * dealing with "direct" dispatches. - * - * @return {*} The return value of executing the single dispatch. - */ - function executeDirectDispatch(event) { - { - validateEventDispatches(event); + if (dispatchListeners[i](event, dispatchInstances[i])) { + return dispatchInstances[i]; } + } + } else if (dispatchListeners) { + if (dispatchListeners(event, dispatchInstances)) { + return dispatchInstances; + } + } - var dispatchListener = event._dispatchListeners; - var dispatchInstance = event._dispatchInstances; + return null; +} +/** + * @see executeDispatchesInOrderStopAtTrueImpl + */ - if (isArray(dispatchListener)) { - throw new Error("Invalid `event`."); - } - event.currentTarget = dispatchListener - ? getNodeFromInstance(dispatchInstance) - : null; - var res = dispatchListener ? dispatchListener(event) : null; - event.currentTarget = null; - event._dispatchListeners = null; - event._dispatchInstances = null; - return res; - } - /** - * @param {SyntheticEvent} event - * @return {boolean} True iff number of dispatches accumulated is greater than 0. - */ +function executeDispatchesInOrderStopAtTrue(event) { + var ret = executeDispatchesInOrderStopAtTrueImpl(event); + event._dispatchInstances = null; + event._dispatchListeners = null; + return ret; +} +/** + * Execution of a "direct" dispatch - there must be at most one dispatch + * accumulated on the event or it is considered an error. It doesn't really make + * sense for an event with multiple dispatches (bubbled) to keep track of the + * return values at each dispatch execution, but it does tend to make sense when + * dealing with "direct" dispatches. + * + * @return {*} The return value of executing the single dispatch. + */ - function hasDispatches(event) { - return !!event._dispatchListeners; - } - function rethrowCaughtError() { - if (hasError) { - var error = caughtError; - hasError = false; - caughtError = null; - throw error; - } - } +function executeDirectDispatch(event) { + { + validateEventDispatches(event); + } - var assign = Object.assign; + var dispatchListener = event._dispatchListeners; + var dispatchInstance = event._dispatchInstances; - var EVENT_POOL_SIZE = 10; - /** - * @interface Event - * @see http://www.w3.org/TR/DOM-Level-3-Events/ - */ + if (isArray(dispatchListener)) { + throw new Error('Invalid `event`.'); + } - var EventInterface = { - type: null, - target: null, - // currentTarget is set when dispatching; no use in copying it here - currentTarget: function () { - return null; - }, - eventPhase: null, - bubbles: null, - cancelable: null, - timeStamp: function (event) { - return event.timeStamp || Date.now(); - }, - defaultPrevented: null, - isTrusted: null - }; + event.currentTarget = dispatchListener ? getNodeFromInstance(dispatchInstance) : null; + var res = dispatchListener ? dispatchListener(event) : null; + event.currentTarget = null; + event._dispatchListeners = null; + event._dispatchInstances = null; + return res; +} +/** + * @param {SyntheticEvent} event + * @return {boolean} True iff number of dispatches accumulated is greater than 0. + */ - function functionThatReturnsTrue() { - return true; - } +function hasDispatches(event) { + return !!event._dispatchListeners; +} +function rethrowCaughtError() { + if (hasError) { + var error = caughtError; + hasError = false; + caughtError = null; + throw error; + } +} - function functionThatReturnsFalse() { - return false; - } - /** - * Synthetic events are dispatched by event plugins, typically in response to a - * top-level event delegation handler. - * - * These systems should generally use pooling to reduce the frequency of garbage - * collection. The system should check `isPersistent` to determine whether the - * event should be released into the pool after being dispatched. Users that - * need a persisted event should invoke `persist`. - * - * Synthetic events (and subclasses) implement the DOM Level 3 Events API by - * normalizing browser quirks. Subclasses do not necessarily have to implement a - * DOM interface; custom application-specific events can also subclass this. - * - * @param {object} dispatchConfig Configuration used to dispatch this event. - * @param {*} targetInst Marker identifying the event target. - * @param {object} nativeEvent Native browser event. - * @param {DOMEventTarget} nativeEventTarget Target node. - */ +var assign = Object.assign; - function SyntheticEvent( - dispatchConfig, - targetInst, - nativeEvent, - nativeEventTarget - ) { - { - // these have a getter/setter for warnings - delete this.nativeEvent; - delete this.preventDefault; - delete this.stopPropagation; - delete this.isDefaultPrevented; - delete this.isPropagationStopped; - } - - this.dispatchConfig = dispatchConfig; - this._targetInst = targetInst; - this.nativeEvent = nativeEvent; - this._dispatchListeners = null; - this._dispatchInstances = null; - var Interface = this.constructor.Interface; - - for (var propName in Interface) { - if (!Interface.hasOwnProperty(propName)) { - continue; - } +var EVENT_POOL_SIZE = 10; +/** + * @interface Event + * @see http://www.w3.org/TR/DOM-Level-3-Events/ + */ - { - delete this[propName]; // this has a getter/setter for warnings - } +var EventInterface = { + type: null, + target: null, + // currentTarget is set when dispatching; no use in copying it here + currentTarget: function () { + return null; + }, + eventPhase: null, + bubbles: null, + cancelable: null, + timeStamp: function (event) { + return event.timeStamp || Date.now(); + }, + defaultPrevented: null, + isTrusted: null +}; + +function functionThatReturnsTrue() { + return true; +} - var normalize = Interface[propName]; +function functionThatReturnsFalse() { + return false; +} +/** + * Synthetic events are dispatched by event plugins, typically in response to a + * top-level event delegation handler. + * + * These systems should generally use pooling to reduce the frequency of garbage + * collection. The system should check `isPersistent` to determine whether the + * event should be released into the pool after being dispatched. Users that + * need a persisted event should invoke `persist`. + * + * Synthetic events (and subclasses) implement the DOM Level 3 Events API by + * normalizing browser quirks. Subclasses do not necessarily have to implement a + * DOM interface; custom application-specific events can also subclass this. + * + * @param {object} dispatchConfig Configuration used to dispatch this event. + * @param {*} targetInst Marker identifying the event target. + * @param {object} nativeEvent Native browser event. + * @param {DOMEventTarget} nativeEventTarget Target node. + */ - if (normalize) { - this[propName] = normalize(nativeEvent); - } else { - if (propName === "target") { - this.target = nativeEventTarget; - } else { - this[propName] = nativeEvent[propName]; - } - } - } - var defaultPrevented = - nativeEvent.defaultPrevented != null - ? nativeEvent.defaultPrevented - : nativeEvent.returnValue === false; +function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) { + { + // these have a getter/setter for warnings + delete this.nativeEvent; + delete this.preventDefault; + delete this.stopPropagation; + delete this.isDefaultPrevented; + delete this.isPropagationStopped; + } - if (defaultPrevented) { - this.isDefaultPrevented = functionThatReturnsTrue; - } else { - this.isDefaultPrevented = functionThatReturnsFalse; - } + this.dispatchConfig = dispatchConfig; + this._targetInst = targetInst; + this.nativeEvent = nativeEvent; + this._dispatchListeners = null; + this._dispatchInstances = null; + var Interface = this.constructor.Interface; - this.isPropagationStopped = functionThatReturnsFalse; - return this; + for (var propName in Interface) { + if (!Interface.hasOwnProperty(propName)) { + continue; } - assign(SyntheticEvent.prototype, { - preventDefault: function () { - this.defaultPrevented = true; - var event = this.nativeEvent; + { + delete this[propName]; // this has a getter/setter for warnings + } - if (!event) { - return; - } + var normalize = Interface[propName]; - if (event.preventDefault) { - event.preventDefault(); - } else if (typeof event.returnValue !== "unknown") { - event.returnValue = false; - } + if (normalize) { + this[propName] = normalize(nativeEvent); + } else { + if (propName === 'target') { + this.target = nativeEventTarget; + } else { + this[propName] = nativeEvent[propName]; + } + } + } - this.isDefaultPrevented = functionThatReturnsTrue; - }, - stopPropagation: function () { - var event = this.nativeEvent; + var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false; - if (!event) { - return; - } + if (defaultPrevented) { + this.isDefaultPrevented = functionThatReturnsTrue; + } else { + this.isDefaultPrevented = functionThatReturnsFalse; + } - if (event.stopPropagation) { - event.stopPropagation(); - } else if (typeof event.cancelBubble !== "unknown") { - // The ChangeEventPlugin registers a "propertychange" event for - // IE. This event does not support bubbling or cancelling, and - // any references to cancelBubble throw "Member not found". A - // typeof check of "unknown" circumvents this issue (and is also - // IE specific). - event.cancelBubble = true; - } - - this.isPropagationStopped = functionThatReturnsTrue; - }, - - /** - * We release all dispatched `SyntheticEvent`s after each event loop, adding - * them back into the pool. This allows a way to hold onto a reference that - * won't be added back into the pool. - */ - persist: function () { - this.isPersistent = functionThatReturnsTrue; - }, - - /** - * Checks if this event should be released back into the pool. - * - * @return {boolean} True if this should not be released, false otherwise. - */ - isPersistent: functionThatReturnsFalse, - - /** - * `PooledClass` looks for `destructor` on each instance it releases. - */ - destructor: function () { - var Interface = this.constructor.Interface; - - for (var propName in Interface) { - { - Object.defineProperty( - this, - propName, - getPooledWarningPropertyDefinition(propName, Interface[propName]) - ); - } - } + this.isPropagationStopped = functionThatReturnsFalse; + return this; +} - this.dispatchConfig = null; - this._targetInst = null; - this.nativeEvent = null; - this.isDefaultPrevented = functionThatReturnsFalse; - this.isPropagationStopped = functionThatReturnsFalse; - this._dispatchListeners = null; - this._dispatchInstances = null; +assign(SyntheticEvent.prototype, { + preventDefault: function () { + this.defaultPrevented = true; + var event = this.nativeEvent; - { - Object.defineProperty( - this, - "nativeEvent", - getPooledWarningPropertyDefinition("nativeEvent", null) - ); - Object.defineProperty( - this, - "isDefaultPrevented", - getPooledWarningPropertyDefinition( - "isDefaultPrevented", - functionThatReturnsFalse - ) - ); - Object.defineProperty( - this, - "isPropagationStopped", - getPooledWarningPropertyDefinition( - "isPropagationStopped", - functionThatReturnsFalse - ) - ); - Object.defineProperty( - this, - "preventDefault", - getPooledWarningPropertyDefinition("preventDefault", function () {}) - ); - Object.defineProperty( - this, - "stopPropagation", - getPooledWarningPropertyDefinition( - "stopPropagation", - function () {} - ) - ); - } - } - }); - SyntheticEvent.Interface = EventInterface; - /** - * Helper to reduce boilerplate when creating subclasses. - */ + if (!event) { + return; + } - SyntheticEvent.extend = function (Interface) { - var Super = this; + if (event.preventDefault) { + event.preventDefault(); + } else if (typeof event.returnValue !== 'unknown') { + event.returnValue = false; + } - var E = function () {}; + this.isDefaultPrevented = functionThatReturnsTrue; + }, + stopPropagation: function () { + var event = this.nativeEvent; - E.prototype = Super.prototype; - var prototype = new E(); + if (!event) { + return; + } - function Class() { - return Super.apply(this, arguments); - } + if (event.stopPropagation) { + event.stopPropagation(); + } else if (typeof event.cancelBubble !== 'unknown') { + // The ChangeEventPlugin registers a "propertychange" event for + // IE. This event does not support bubbling or cancelling, and + // any references to cancelBubble throw "Member not found". A + // typeof check of "unknown" circumvents this issue (and is also + // IE specific). + event.cancelBubble = true; + } - assign(prototype, Class.prototype); - Class.prototype = prototype; - Class.prototype.constructor = Class; - Class.Interface = assign({}, Super.Interface, Interface); - Class.extend = Super.extend; - addEventPoolingTo(Class); - return Class; - }; + this.isPropagationStopped = functionThatReturnsTrue; + }, - addEventPoolingTo(SyntheticEvent); - /** - * Helper to nullify syntheticEvent instance properties when destructing - * - * @param {String} propName - * @param {?object} getVal - * @return {object} defineProperty object - */ + /** + * We release all dispatched `SyntheticEvent`s after each event loop, adding + * them back into the pool. This allows a way to hold onto a reference that + * won't be added back into the pool. + */ + persist: function () { + this.isPersistent = functionThatReturnsTrue; + }, - function getPooledWarningPropertyDefinition(propName, getVal) { - function set(val) { - var action = isFunction ? "setting the method" : "setting the property"; - warn(action, "This is effectively a no-op"); - return val; - } + /** + * Checks if this event should be released back into the pool. + * + * @return {boolean} True if this should not be released, false otherwise. + */ + isPersistent: functionThatReturnsFalse, - function get() { - var action = isFunction - ? "accessing the method" - : "accessing the property"; - var result = isFunction - ? "This is a no-op function" - : "This is set to null"; - warn(action, result); - return getVal; - } + /** + * `PooledClass` looks for `destructor` on each instance it releases. + */ + destructor: function () { + var Interface = this.constructor.Interface; - function warn(action, result) { - { - error( - "This synthetic event is reused for performance reasons. If you're seeing this, " + - "you're %s `%s` on a released/nullified synthetic event. %s. " + - "If you must keep the original synthetic event around, use event.persist(). " + - "See https://react.dev/link/event-pooling for more information.", - action, - propName, - result - ); - } + for (var propName in Interface) { + { + Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName])); } - - var isFunction = typeof getVal === "function"; - return { - configurable: true, - set: set, - get: get - }; } - function createOrGetPooledEvent( - dispatchConfig, - targetInst, - nativeEvent, - nativeInst - ) { - var EventConstructor = this; + this.dispatchConfig = null; + this._targetInst = null; + this.nativeEvent = null; + this.isDefaultPrevented = functionThatReturnsFalse; + this.isPropagationStopped = functionThatReturnsFalse; + this._dispatchListeners = null; + this._dispatchInstances = null; - if (EventConstructor.eventPool.length) { - var instance = EventConstructor.eventPool.pop(); - EventConstructor.call( - instance, - dispatchConfig, - targetInst, - nativeEvent, - nativeInst - ); - return instance; - } + { + Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null)); + Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse)); + Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse)); + Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {})); + Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {})); + } + } +}); +SyntheticEvent.Interface = EventInterface; +/** + * Helper to reduce boilerplate when creating subclasses. + */ - return new EventConstructor( - dispatchConfig, - targetInst, - nativeEvent, - nativeInst - ); - } +SyntheticEvent.extend = function (Interface) { + var Super = this; - function releasePooledEvent(event) { - var EventConstructor = this; + var E = function () {}; - if (!(event instanceof EventConstructor)) { - throw new Error( - "Trying to release an event instance into a pool of a different type." - ); - } + E.prototype = Super.prototype; + var prototype = new E(); - event.destructor(); + function Class() { + return Super.apply(this, arguments); + } - if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) { - EventConstructor.eventPool.push(event); - } - } + assign(prototype, Class.prototype); + Class.prototype = prototype; + Class.prototype.constructor = Class; + Class.Interface = assign({}, Super.Interface, Interface); + Class.extend = Super.extend; + addEventPoolingTo(Class); + return Class; +}; + +addEventPoolingTo(SyntheticEvent); +/** + * Helper to nullify syntheticEvent instance properties when destructing + * + * @param {String} propName + * @param {?object} getVal + * @return {object} defineProperty object + */ - function addEventPoolingTo(EventConstructor) { - EventConstructor.getPooled = createOrGetPooledEvent; - EventConstructor.eventPool = []; - EventConstructor.release = releasePooledEvent; +function getPooledWarningPropertyDefinition(propName, getVal) { + function set(val) { + var action = isFunction ? 'setting the method' : 'setting the property'; + warn(action, 'This is effectively a no-op'); + return val; + } + + function get() { + var action = isFunction ? 'accessing the method' : 'accessing the property'; + var result = isFunction ? 'This is a no-op function' : 'This is set to null'; + warn(action, result); + return getVal; + } + + function warn(action, result) { + { + error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://react.dev/link/event-pooling for more information.', action, propName, result); } + } - /** - * `touchHistory` isn't actually on the native event, but putting it in the - * interface will ensure that it is cleaned up when pooled/destroyed. The - * `ResponderEventPlugin` will populate it appropriately. - */ + var isFunction = typeof getVal === 'function'; + return { + configurable: true, + set: set, + get: get + }; +} - var ResponderSyntheticEvent = SyntheticEvent.extend({ - touchHistory: function (nativeEvent) { - return null; // Actually doesn't even look at the native event. - } - }); +function createOrGetPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) { + var EventConstructor = this; - var TOP_TOUCH_START = "topTouchStart"; - var TOP_TOUCH_MOVE = "topTouchMove"; - var TOP_TOUCH_END = "topTouchEnd"; - var TOP_TOUCH_CANCEL = "topTouchCancel"; - var TOP_SCROLL = "topScroll"; - var TOP_SELECTION_CHANGE = "topSelectionChange"; - function isStartish(topLevelType) { - return topLevelType === TOP_TOUCH_START; - } - function isMoveish(topLevelType) { - return topLevelType === TOP_TOUCH_MOVE; - } - function isEndish(topLevelType) { - return ( - topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL - ); - } - var startDependencies = [TOP_TOUCH_START]; - var moveDependencies = [TOP_TOUCH_MOVE]; - var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END]; + if (EventConstructor.eventPool.length) { + var instance = EventConstructor.eventPool.pop(); + EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst); + return instance; + } - /** - * Tracks the position and time of each active touch by `touch.identifier`. We - * should typically only see IDs in the range of 1-20 because IDs get recycled - * when touches end and start again. - */ + return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst); +} - var MAX_TOUCH_BANK = 20; - var touchBank = []; - var touchHistory = { - touchBank: touchBank, - numberActiveTouches: 0, - // If there is only one active touch, we remember its location. This prevents - // us having to loop through all of the touches all the time in the most - // common case. - indexOfSingleActiveTouch: -1, - mostRecentTimeStamp: 0 - }; +function releasePooledEvent(event) { + var EventConstructor = this; - function timestampForTouch(touch) { - // The legacy internal implementation provides "timeStamp", which has been - // renamed to "timestamp". Let both work for now while we iron it out - // TODO (evv): rename timeStamp to timestamp in internal code - return touch.timeStamp || touch.timestamp; - } - /** - * TODO: Instead of making gestures recompute filtered velocity, we could - * include a built in velocity computation that can be reused globally. - */ + if (!(event instanceof EventConstructor)) { + throw new Error('Trying to release an event instance into a pool of a different type.'); + } - function createTouchRecord(touch) { - return { - touchActive: true, - startPageX: touch.pageX, - startPageY: touch.pageY, - startTimeStamp: timestampForTouch(touch), - currentPageX: touch.pageX, - currentPageY: touch.pageY, - currentTimeStamp: timestampForTouch(touch), - previousPageX: touch.pageX, - previousPageY: touch.pageY, - previousTimeStamp: timestampForTouch(touch) - }; - } + event.destructor(); - function resetTouchRecord(touchRecord, touch) { - touchRecord.touchActive = true; - touchRecord.startPageX = touch.pageX; - touchRecord.startPageY = touch.pageY; - touchRecord.startTimeStamp = timestampForTouch(touch); - touchRecord.currentPageX = touch.pageX; - touchRecord.currentPageY = touch.pageY; - touchRecord.currentTimeStamp = timestampForTouch(touch); - touchRecord.previousPageX = touch.pageX; - touchRecord.previousPageY = touch.pageY; - touchRecord.previousTimeStamp = timestampForTouch(touch); - } + if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) { + EventConstructor.eventPool.push(event); + } +} - function getTouchIdentifier(_ref) { - var identifier = _ref.identifier; +function addEventPoolingTo(EventConstructor) { + EventConstructor.getPooled = createOrGetPooledEvent; + EventConstructor.eventPool = []; + EventConstructor.release = releasePooledEvent; +} - if (identifier == null) { - throw new Error("Touch object is missing identifier."); - } +/** + * `touchHistory` isn't actually on the native event, but putting it in the + * interface will ensure that it is cleaned up when pooled/destroyed. The + * `ResponderEventPlugin` will populate it appropriately. + */ - { - if (identifier > MAX_TOUCH_BANK) { - error( - "Touch identifier %s is greater than maximum supported %s which causes " + - "performance issues backfilling array locations for all of the indices.", - identifier, - MAX_TOUCH_BANK - ); - } - } +var ResponderSyntheticEvent = SyntheticEvent.extend({ + touchHistory: function (nativeEvent) { + return null; // Actually doesn't even look at the native event. + } +}); + +var TOP_TOUCH_START = 'topTouchStart'; +var TOP_TOUCH_MOVE = 'topTouchMove'; +var TOP_TOUCH_END = 'topTouchEnd'; +var TOP_TOUCH_CANCEL = 'topTouchCancel'; +var TOP_SCROLL = 'topScroll'; +var TOP_SELECTION_CHANGE = 'topSelectionChange'; +function isStartish(topLevelType) { + return topLevelType === TOP_TOUCH_START; +} +function isMoveish(topLevelType) { + return topLevelType === TOP_TOUCH_MOVE; +} +function isEndish(topLevelType) { + return topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL; +} +var startDependencies = [TOP_TOUCH_START]; +var moveDependencies = [TOP_TOUCH_MOVE]; +var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END]; - return identifier; - } +/** + * Tracks the position and time of each active touch by `touch.identifier`. We + * should typically only see IDs in the range of 1-20 because IDs get recycled + * when touches end and start again. + */ - function recordTouchStart(touch) { - var identifier = getTouchIdentifier(touch); - var touchRecord = touchBank[identifier]; +var MAX_TOUCH_BANK = 20; +var touchBank = []; +var touchHistory = { + touchBank: touchBank, + numberActiveTouches: 0, + // If there is only one active touch, we remember its location. This prevents + // us having to loop through all of the touches all the time in the most + // common case. + indexOfSingleActiveTouch: -1, + mostRecentTimeStamp: 0 +}; + +function timestampForTouch(touch) { + // The legacy internal implementation provides "timeStamp", which has been + // renamed to "timestamp". Let both work for now while we iron it out + // TODO (evv): rename timeStamp to timestamp in internal code + return touch.timeStamp || touch.timestamp; +} +/** + * TODO: Instead of making gestures recompute filtered velocity, we could + * include a built in velocity computation that can be reused globally. + */ - if (touchRecord) { - resetTouchRecord(touchRecord, touch); - } else { - touchBank[identifier] = createTouchRecord(touch); - } - touchHistory.mostRecentTimeStamp = timestampForTouch(touch); - } +function createTouchRecord(touch) { + return { + touchActive: true, + startPageX: touch.pageX, + startPageY: touch.pageY, + startTimeStamp: timestampForTouch(touch), + currentPageX: touch.pageX, + currentPageY: touch.pageY, + currentTimeStamp: timestampForTouch(touch), + previousPageX: touch.pageX, + previousPageY: touch.pageY, + previousTimeStamp: timestampForTouch(touch) + }; +} - function recordTouchMove(touch) { - var touchRecord = touchBank[getTouchIdentifier(touch)]; +function resetTouchRecord(touchRecord, touch) { + touchRecord.touchActive = true; + touchRecord.startPageX = touch.pageX; + touchRecord.startPageY = touch.pageY; + touchRecord.startTimeStamp = timestampForTouch(touch); + touchRecord.currentPageX = touch.pageX; + touchRecord.currentPageY = touch.pageY; + touchRecord.currentTimeStamp = timestampForTouch(touch); + touchRecord.previousPageX = touch.pageX; + touchRecord.previousPageY = touch.pageY; + touchRecord.previousTimeStamp = timestampForTouch(touch); +} - if (touchRecord) { - touchRecord.touchActive = true; - touchRecord.previousPageX = touchRecord.currentPageX; - touchRecord.previousPageY = touchRecord.currentPageY; - touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; - touchRecord.currentPageX = touch.pageX; - touchRecord.currentPageY = touch.pageY; - touchRecord.currentTimeStamp = timestampForTouch(touch); - touchHistory.mostRecentTimeStamp = timestampForTouch(touch); - } else { - { - warn( - "Cannot record touch move without a touch start.\n" + - "Touch Move: %s\n" + - "Touch Bank: %s", - printTouch(touch), - printTouchBank() - ); - } - } - } +function getTouchIdentifier(_ref) { + var identifier = _ref.identifier; - function recordTouchEnd(touch) { - var touchRecord = touchBank[getTouchIdentifier(touch)]; + if (identifier == null) { + throw new Error('Touch object is missing identifier.'); + } - if (touchRecord) { - touchRecord.touchActive = false; - touchRecord.previousPageX = touchRecord.currentPageX; - touchRecord.previousPageY = touchRecord.currentPageY; - touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; - touchRecord.currentPageX = touch.pageX; - touchRecord.currentPageY = touch.pageY; - touchRecord.currentTimeStamp = timestampForTouch(touch); - touchHistory.mostRecentTimeStamp = timestampForTouch(touch); - } else { - { - warn( - "Cannot record touch end without a touch start.\n" + - "Touch End: %s\n" + - "Touch Bank: %s", - printTouch(touch), - printTouchBank() - ); - } - } + { + if (identifier > MAX_TOUCH_BANK) { + error('Touch identifier %s is greater than maximum supported %s which causes ' + 'performance issues backfilling array locations for all of the indices.', identifier, MAX_TOUCH_BANK); } + } - function printTouch(touch) { - return JSON.stringify({ - identifier: touch.identifier, - pageX: touch.pageX, - pageY: touch.pageY, - timestamp: timestampForTouch(touch) - }); - } + return identifier; +} - function printTouchBank() { - var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK)); +function recordTouchStart(touch) { + var identifier = getTouchIdentifier(touch); + var touchRecord = touchBank[identifier]; - if (touchBank.length > MAX_TOUCH_BANK) { - printed += " (original size: " + touchBank.length + ")"; - } + if (touchRecord) { + resetTouchRecord(touchRecord, touch); + } else { + touchBank[identifier] = createTouchRecord(touch); + } - return printed; - } + touchHistory.mostRecentTimeStamp = timestampForTouch(touch); +} - var instrumentationCallback; - var ResponderTouchHistoryStore = { - /** - * Registers a listener which can be used to instrument every touch event. - */ - instrument: function (callback) { - instrumentationCallback = callback; - }, - recordTouchTrack: function (topLevelType, nativeEvent) { - if (instrumentationCallback != null) { - instrumentationCallback(topLevelType, nativeEvent); - } +function recordTouchMove(touch) { + var touchRecord = touchBank[getTouchIdentifier(touch)]; + + if (touchRecord) { + touchRecord.touchActive = true; + touchRecord.previousPageX = touchRecord.currentPageX; + touchRecord.previousPageY = touchRecord.currentPageY; + touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; + touchRecord.currentPageX = touch.pageX; + touchRecord.currentPageY = touch.pageY; + touchRecord.currentTimeStamp = timestampForTouch(touch); + touchHistory.mostRecentTimeStamp = timestampForTouch(touch); + } else { + { + warn('Cannot record touch move without a touch start.\n' + 'Touch Move: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank()); + } + } +} - if (isMoveish(topLevelType)) { - nativeEvent.changedTouches.forEach(recordTouchMove); - } else if (isStartish(topLevelType)) { - nativeEvent.changedTouches.forEach(recordTouchStart); - touchHistory.numberActiveTouches = nativeEvent.touches.length; +function recordTouchEnd(touch) { + var touchRecord = touchBank[getTouchIdentifier(touch)]; + + if (touchRecord) { + touchRecord.touchActive = false; + touchRecord.previousPageX = touchRecord.currentPageX; + touchRecord.previousPageY = touchRecord.currentPageY; + touchRecord.previousTimeStamp = touchRecord.currentTimeStamp; + touchRecord.currentPageX = touch.pageX; + touchRecord.currentPageY = touch.pageY; + touchRecord.currentTimeStamp = timestampForTouch(touch); + touchHistory.mostRecentTimeStamp = timestampForTouch(touch); + } else { + { + warn('Cannot record touch end without a touch start.\n' + 'Touch End: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank()); + } + } +} - if (touchHistory.numberActiveTouches === 1) { - touchHistory.indexOfSingleActiveTouch = - nativeEvent.touches[0].identifier; - } - } else if (isEndish(topLevelType)) { - nativeEvent.changedTouches.forEach(recordTouchEnd); - touchHistory.numberActiveTouches = nativeEvent.touches.length; +function printTouch(touch) { + return JSON.stringify({ + identifier: touch.identifier, + pageX: touch.pageX, + pageY: touch.pageY, + timestamp: timestampForTouch(touch) + }); +} - if (touchHistory.numberActiveTouches === 1) { - for (var i = 0; i < touchBank.length; i++) { - var touchTrackToCheck = touchBank[i]; +function printTouchBank() { + var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK)); - if (touchTrackToCheck != null && touchTrackToCheck.touchActive) { - touchHistory.indexOfSingleActiveTouch = i; - break; - } - } + if (touchBank.length > MAX_TOUCH_BANK) { + printed += ' (original size: ' + touchBank.length + ')'; + } - { - var activeRecord = - touchBank[touchHistory.indexOfSingleActiveTouch]; + return printed; +} - if (activeRecord == null || !activeRecord.touchActive) { - error("Cannot find single active touch."); - } - } +var instrumentationCallback; +var ResponderTouchHistoryStore = { + /** + * Registers a listener which can be used to instrument every touch event. + */ + instrument: function (callback) { + instrumentationCallback = callback; + }, + recordTouchTrack: function (topLevelType, nativeEvent) { + if (instrumentationCallback != null) { + instrumentationCallback(topLevelType, nativeEvent); + } + + if (isMoveish(topLevelType)) { + nativeEvent.changedTouches.forEach(recordTouchMove); + } else if (isStartish(topLevelType)) { + nativeEvent.changedTouches.forEach(recordTouchStart); + touchHistory.numberActiveTouches = nativeEvent.touches.length; + + if (touchHistory.numberActiveTouches === 1) { + touchHistory.indexOfSingleActiveTouch = nativeEvent.touches[0].identifier; + } + } else if (isEndish(topLevelType)) { + nativeEvent.changedTouches.forEach(recordTouchEnd); + touchHistory.numberActiveTouches = nativeEvent.touches.length; + + if (touchHistory.numberActiveTouches === 1) { + for (var i = 0; i < touchBank.length; i++) { + var touchTrackToCheck = touchBank[i]; + + if (touchTrackToCheck != null && touchTrackToCheck.touchActive) { + touchHistory.indexOfSingleActiveTouch = i; + break; } } - }, - touchHistory: touchHistory - }; - /** - * Accumulates items that must not be null or undefined. - * - * This is used to conserve memory by avoiding array allocations. - * - * @return {*|array<*>} An accumulation of items. - */ + { + var activeRecord = touchBank[touchHistory.indexOfSingleActiveTouch]; - function accumulate(current, next) { - if (next == null) { - throw new Error("Accumulated items must not be null or undefined."); + if (activeRecord == null || !activeRecord.touchActive) { + error('Cannot find single active touch.'); + } + } } + } + }, + touchHistory: touchHistory +}; - if (current == null) { - return next; - } // Both are not empty. Warning: Never call x.concat(y) when you are not - // certain that x is an Array (x could be a string with concat method). - - if (isArray(current)) { - /* $FlowFixMe[incompatible-return] if `current` is `T` and `T` an array, - * `isArray` might refine to the array element type of `T` */ - return current.concat(next); - } +/** + * Accumulates items that must not be null or undefined. + * + * This is used to conserve memory by avoiding array allocations. + * + * @return {*|array<*>} An accumulation of items. + */ - if (isArray(next)) { - /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, - * `isArray` might refine to the array element type of `T` */ - return [current].concat(next); - } +function accumulate(current, next) { + if (next == null) { + throw new Error('Accumulated items must not be null or undefined.'); + } - return [current, next]; - } + if (current == null) { + return next; + } // Both are not empty. Warning: Never call x.concat(y) when you are not + // certain that x is an Array (x could be a string with concat method). - /** - * Accumulates items that must not be null or undefined into the first one. This - * is used to conserve memory by avoiding array allocations, and thus sacrifices - * API cleanness. Since `current` can be null before being passed in and not - * null after this function, make sure to assign it back to `current`: - * - * `a = accumulateInto(a, b);` - * - * This API should be sparingly used. Try `accumulate` for something cleaner. - * - * @return {*|array<*>} An accumulation of items. - */ - function accumulateInto(current, next) { - if (next == null) { - throw new Error("Accumulated items must not be null or undefined."); - } + if (isArray(current)) { + /* $FlowFixMe[incompatible-return] if `current` is `T` and `T` an array, + * `isArray` might refine to the array element type of `T` */ + return current.concat(next); + } - if (current == null) { - return next; - } // Both are not empty. Warning: Never call x.concat(y) when you are not - // certain that x is an Array (x could be a string with concat method). + if (isArray(next)) { + /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, + * `isArray` might refine to the array element type of `T` */ + return [current].concat(next); + } - if (isArray(current)) { - if (isArray(next)) { - // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable - // $FlowFixMe[method-unbinding] - current.push.apply(current, next); - return current; - } // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable + return [current, next]; +} - current.push(next); - return current; - } +/** + * Accumulates items that must not be null or undefined into the first one. This + * is used to conserve memory by avoiding array allocations, and thus sacrifices + * API cleanness. Since `current` can be null before being passed in and not + * null after this function, make sure to assign it back to `current`: + * + * `a = accumulateInto(a, b);` + * + * This API should be sparingly used. Try `accumulate` for something cleaner. + * + * @return {*|array<*>} An accumulation of items. + */ - if (isArray(next)) { - // A bit too dangerous to mutate `next`. +function accumulateInto(current, next) { + if (next == null) { + throw new Error('Accumulated items must not be null or undefined.'); + } - /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, - * `isArray` might refine to the array element type of `T` */ - return [current].concat(next); - } + if (current == null) { + return next; + } // Both are not empty. Warning: Never call x.concat(y) when you are not + // certain that x is an Array (x could be a string with concat method). - return [current, next]; - } - /** - * @param {array} arr an "accumulation" of items which is either an Array or - * a single item. Useful when paired with the `accumulate` module. This is a - * simple utility that allows us to reason about a collection of items, but - * handling the case when there is exactly one item (and we do not need to - * allocate an array). - * @param {function} cb Callback invoked with each element or a collection. - * @param {?} [scope] Scope used as `this` in a callback. - */ - function forEachAccumulated(arr, cb, scope) { - if (Array.isArray(arr)) { - // $FlowFixMe[incompatible-call] if `T` is an array, `cb` cannot be called - arr.forEach(cb, scope); - } else if (arr) { - cb.call(scope, arr); - } - } - - var FunctionComponent = 0; - var ClassComponent = 1; - var HostRoot = 3; // Root of a host tree. Could be nested inside another node. - - var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. - - var HostComponent = 5; - var HostText = 6; - var Fragment = 7; - var Mode = 8; - var ContextConsumer = 9; - var ContextProvider = 10; - var ForwardRef = 11; - var Profiler = 12; - var SuspenseComponent = 13; - var MemoComponent = 14; - var SimpleMemoComponent = 15; - var LazyComponent = 16; - var IncompleteClassComponent = 17; - var DehydratedFragment = 18; - var SuspenseListComponent = 19; - var ScopeComponent = 21; - var OffscreenComponent = 22; - var LegacyHiddenComponent = 23; - var CacheComponent = 24; - var TracingMarkerComponent = 25; - var HostHoistable = 26; - var HostSingleton = 27; - var IncompleteFunctionComponent = 28; + if (isArray(current)) { + if (isArray(next)) { + // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable + // $FlowFixMe[method-unbinding] + current.push.apply(current, next); + return current; + } // $FlowFixMe[prop-missing] `isArray` does not ensure array is mutable - /** - * Instance of element that should respond to touch/move types of interactions, - * as indicated explicitly by relevant callbacks. - */ - var responderInst = null; - /** - * Count of current touches. A textInput should become responder iff the - * selection changes while there is a touch on the screen. - */ + current.push(next); + return current; + } - var trackedTouchCount = 0; - - function changeResponder(nextResponderInst, blockHostResponder) { - var oldResponderInst = responderInst; - responderInst = nextResponderInst; - - if (ResponderEventPlugin.GlobalResponderHandler !== null) { - ResponderEventPlugin.GlobalResponderHandler.onChange( - oldResponderInst, - nextResponderInst, - blockHostResponder - ); - } - } - - var eventTypes = { - /** - * On a `touchStart`/`mouseDown`, is it desired that this element become the - * responder? - */ - startShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onStartShouldSetResponder", - captured: "onStartShouldSetResponderCapture" - }, - dependencies: startDependencies - }, - - /** - * On a `scroll`, is it desired that this element become the responder? This - * is usually not needed, but should be used to retroactively infer that a - * `touchStart` had occurred during momentum scroll. During a momentum scroll, - * a touch start will be immediately followed by a scroll event if the view is - * currently scrolling. - * - * TODO: This shouldn't bubble. - */ - scrollShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onScrollShouldSetResponder", - captured: "onScrollShouldSetResponderCapture" - }, - dependencies: [TOP_SCROLL] - }, - - /** - * On text selection change, should this element become the responder? This - * is needed for text inputs or other views with native selection, so the - * JS view can claim the responder. - * - * TODO: This shouldn't bubble. - */ - selectionChangeShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onSelectionChangeShouldSetResponder", - captured: "onSelectionChangeShouldSetResponderCapture" - }, - dependencies: [TOP_SELECTION_CHANGE] - }, - - /** - * On a `touchMove`/`mouseMove`, is it desired that this element become the - * responder? - */ - moveShouldSetResponder: { - phasedRegistrationNames: { - bubbled: "onMoveShouldSetResponder", - captured: "onMoveShouldSetResponderCapture" - }, - dependencies: moveDependencies - }, - - /** - * Direct responder events dispatched directly to responder. Do not bubble. - */ - responderStart: { - registrationName: "onResponderStart", - dependencies: startDependencies - }, - responderMove: { - registrationName: "onResponderMove", - dependencies: moveDependencies - }, - responderEnd: { - registrationName: "onResponderEnd", - dependencies: endDependencies - }, - responderRelease: { - registrationName: "onResponderRelease", - dependencies: endDependencies - }, - responderTerminationRequest: { - registrationName: "onResponderTerminationRequest", - dependencies: [] - }, - responderGrant: { - registrationName: "onResponderGrant", - dependencies: [] - }, - responderReject: { - registrationName: "onResponderReject", - dependencies: [] - }, - responderTerminate: { - registrationName: "onResponderTerminate", - dependencies: [] - } - }; // Start of inline: the below functions were inlined from - // EventPropagator.js, as they deviated from ReactDOM's newer - // implementations. - - function getParent$1(inst) { - do { - inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. - // That is depending on if we want nested subtrees (layers) to bubble - // events to their parent. We could also go through parentNode on the - // host node but that wouldn't work for React Native and doesn't let us - // do the portal feature. - } while (inst && inst.tag !== HostComponent); + if (isArray(next)) { + // A bit too dangerous to mutate `next`. - if (inst) { - return inst; - } + /* $FlowFixMe[incompatible-return] unsound if `next` is `T` and `T` an array, + * `isArray` might refine to the array element type of `T` */ + return [current].concat(next); + } - return null; - } - /** - * Return the lowest common ancestor of A and B, or null if they are in - * different trees. - */ + return [current, next]; +} - function getLowestCommonAncestor(instA, instB) { - var depthA = 0; +/** + * @param {array} arr an "accumulation" of items which is either an Array or + * a single item. Useful when paired with the `accumulate` module. This is a + * simple utility that allows us to reason about a collection of items, but + * handling the case when there is exactly one item (and we do not need to + * allocate an array). + * @param {function} cb Callback invoked with each element or a collection. + * @param {?} [scope] Scope used as `this` in a callback. + */ +function forEachAccumulated(arr, cb, scope) { + if (Array.isArray(arr)) { + // $FlowFixMe[incompatible-call] if `T` is an array, `cb` cannot be called + arr.forEach(cb, scope); + } else if (arr) { + cb.call(scope, arr); + } +} - for (var tempA = instA; tempA; tempA = getParent$1(tempA)) { - depthA++; - } +var FunctionComponent = 0; +var ClassComponent = 1; +var HostRoot = 3; // Root of a host tree. Could be nested inside another node. + +var HostPortal = 4; // A subtree. Could be an entry point to a different renderer. + +var HostComponent = 5; +var HostText = 6; +var Fragment = 7; +var Mode = 8; +var ContextConsumer = 9; +var ContextProvider = 10; +var ForwardRef = 11; +var Profiler = 12; +var SuspenseComponent = 13; +var MemoComponent = 14; +var SimpleMemoComponent = 15; +var LazyComponent = 16; +var IncompleteClassComponent = 17; +var DehydratedFragment = 18; +var SuspenseListComponent = 19; +var ScopeComponent = 21; +var OffscreenComponent = 22; +var LegacyHiddenComponent = 23; +var CacheComponent = 24; +var TracingMarkerComponent = 25; +var HostHoistable = 26; +var HostSingleton = 27; +var IncompleteFunctionComponent = 28; - var depthB = 0; +/** + * Instance of element that should respond to touch/move types of interactions, + * as indicated explicitly by relevant callbacks. + */ - for (var tempB = instB; tempB; tempB = getParent$1(tempB)) { - depthB++; - } // If A is deeper, crawl up. +var responderInst = null; +/** + * Count of current touches. A textInput should become responder iff the + * selection changes while there is a touch on the screen. + */ - while (depthA - depthB > 0) { - instA = getParent$1(instA); - depthA--; - } // If B is deeper, crawl up. +var trackedTouchCount = 0; - while (depthB - depthA > 0) { - instB = getParent$1(instB); - depthB--; - } // Walk in lockstep until we find a match. +function changeResponder(nextResponderInst, blockHostResponder) { + var oldResponderInst = responderInst; + responderInst = nextResponderInst; - var depth = depthA; + if (ResponderEventPlugin.GlobalResponderHandler !== null) { + ResponderEventPlugin.GlobalResponderHandler.onChange(oldResponderInst, nextResponderInst, blockHostResponder); + } +} - while (depth--) { - if (instA === instB || instA === instB.alternate) { - return instA; - } +var eventTypes = { + /** + * On a `touchStart`/`mouseDown`, is it desired that this element become the + * responder? + */ + startShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onStartShouldSetResponder', + captured: 'onStartShouldSetResponderCapture' + }, + dependencies: startDependencies + }, + + /** + * On a `scroll`, is it desired that this element become the responder? This + * is usually not needed, but should be used to retroactively infer that a + * `touchStart` had occurred during momentum scroll. During a momentum scroll, + * a touch start will be immediately followed by a scroll event if the view is + * currently scrolling. + * + * TODO: This shouldn't bubble. + */ + scrollShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onScrollShouldSetResponder', + captured: 'onScrollShouldSetResponderCapture' + }, + dependencies: [TOP_SCROLL] + }, + + /** + * On text selection change, should this element become the responder? This + * is needed for text inputs or other views with native selection, so the + * JS view can claim the responder. + * + * TODO: This shouldn't bubble. + */ + selectionChangeShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onSelectionChangeShouldSetResponder', + captured: 'onSelectionChangeShouldSetResponderCapture' + }, + dependencies: [TOP_SELECTION_CHANGE] + }, + + /** + * On a `touchMove`/`mouseMove`, is it desired that this element become the + * responder? + */ + moveShouldSetResponder: { + phasedRegistrationNames: { + bubbled: 'onMoveShouldSetResponder', + captured: 'onMoveShouldSetResponderCapture' + }, + dependencies: moveDependencies + }, + + /** + * Direct responder events dispatched directly to responder. Do not bubble. + */ + responderStart: { + registrationName: 'onResponderStart', + dependencies: startDependencies + }, + responderMove: { + registrationName: 'onResponderMove', + dependencies: moveDependencies + }, + responderEnd: { + registrationName: 'onResponderEnd', + dependencies: endDependencies + }, + responderRelease: { + registrationName: 'onResponderRelease', + dependencies: endDependencies + }, + responderTerminationRequest: { + registrationName: 'onResponderTerminationRequest', + dependencies: [] + }, + responderGrant: { + registrationName: 'onResponderGrant', + dependencies: [] + }, + responderReject: { + registrationName: 'onResponderReject', + dependencies: [] + }, + responderTerminate: { + registrationName: 'onResponderTerminate', + dependencies: [] + } +}; // Start of inline: the below functions were inlined from +// EventPropagator.js, as they deviated from ReactDOM's newer +// implementations. + +function getParent$1(inst) { + do { + inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. + // That is depending on if we want nested subtrees (layers) to bubble + // events to their parent. We could also go through parentNode on the + // host node but that wouldn't work for React Native and doesn't let us + // do the portal feature. + } while (inst && inst.tag !== HostComponent); + + if (inst) { + return inst; + } + + return null; +} +/** + * Return the lowest common ancestor of A and B, or null if they are in + * different trees. + */ - instA = getParent$1(instA); - instB = getParent$1(instB); - } - return null; +function getLowestCommonAncestor(instA, instB) { + var depthA = 0; + + for (var tempA = instA; tempA; tempA = getParent$1(tempA)) { + depthA++; + } + + var depthB = 0; + + for (var tempB = instB; tempB; tempB = getParent$1(tempB)) { + depthB++; + } // If A is deeper, crawl up. + + + while (depthA - depthB > 0) { + instA = getParent$1(instA); + depthA--; + } // If B is deeper, crawl up. + + + while (depthB - depthA > 0) { + instB = getParent$1(instB); + depthB--; + } // Walk in lockstep until we find a match. + + + var depth = depthA; + + while (depth--) { + if (instA === instB || instA === instB.alternate) { + return instA; } - /** - * Return if A is an ancestor of B. - */ - function isAncestor(instA, instB) { - while (instB) { - if (instA === instB || instA === instB.alternate) { - return true; - } + instA = getParent$1(instA); + instB = getParent$1(instB); + } - instB = getParent$1(instB); - } + return null; +} +/** + * Return if A is an ancestor of B. + */ - return false; +function isAncestor(instA, instB) { + while (instB) { + if (instA === instB || instA === instB.alternate) { + return true; } - /** - * Simulates the traversal of a two-phase, capture/bubble event dispatch. - */ - function traverseTwoPhase$1(inst, fn, arg) { - var path = []; + instB = getParent$1(instB); + } - while (inst) { - path.push(inst); - inst = getParent$1(inst); - } + return false; +} +/** + * Simulates the traversal of a two-phase, capture/bubble event dispatch. + */ - var i; - for (i = path.length; i-- > 0; ) { - fn(path[i], "captured", arg); - } +function traverseTwoPhase$1(inst, fn, arg) { + var path = []; - for (i = 0; i < path.length; i++) { - fn(path[i], "bubbled", arg); - } - } + while (inst) { + path.push(inst); + inst = getParent$1(inst); + } - function getListener$1(inst, registrationName) { - var stateNode = inst.stateNode; + var i; - if (stateNode === null) { - // Work in progress (ex: onload events in incremental mode). - return null; - } + for (i = path.length; i-- > 0;) { + fn(path[i], 'captured', arg); + } - var props = getFiberCurrentPropsFromNode$1(stateNode); + for (i = 0; i < path.length; i++) { + fn(path[i], 'bubbled', arg); + } +} - if (props === null) { - // Work in progress. - return null; - } +function getListener$1(inst, registrationName) { + var stateNode = inst.stateNode; - var listener = props[registrationName]; + if (stateNode === null) { + // Work in progress (ex: onload events in incremental mode). + return null; + } - if (listener && typeof listener !== "function") { - throw new Error( - "Expected `" + - registrationName + - "` listener to be a function, instead got a value of `" + - typeof listener + - "` type." - ); - } + var props = getFiberCurrentPropsFromNode$1(stateNode); - return listener; - } + if (props === null) { + // Work in progress. + return null; + } - function listenerAtPhase$1(inst, event, propagationPhase) { - var registrationName = - event.dispatchConfig.phasedRegistrationNames[propagationPhase]; - return getListener$1(inst, registrationName); - } + var listener = props[registrationName]; - function accumulateDirectionalDispatches$1(inst, phase, event) { - { - if (!inst) { - error("Dispatching inst must not be null"); - } - } + if (listener && typeof listener !== 'function') { + throw new Error("Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type."); + } + + return listener; +} - var listener = listenerAtPhase$1(inst, event, phase); +function listenerAtPhase$1(inst, event, propagationPhase) { + var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase]; + return getListener$1(inst, registrationName); +} - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } +function accumulateDirectionalDispatches$1(inst, phase, event) { + { + if (!inst) { + error('Dispatching inst must not be null'); } - /** - * Accumulates without regard to direction, does not look for phased - * registration names. Same as `accumulateDirectDispatchesSingle` but without - * requiring that the `dispatchMarker` be the same as the dispatched ID. - */ + } - function accumulateDispatches$1(inst, ignoredDirection, event) { - if (inst && event && event.dispatchConfig.registrationName) { - var registrationName = event.dispatchConfig.registrationName; - var listener = getListener$1(inst, registrationName); + var listener = listenerAtPhase$1(inst, event, phase); - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } - } - } - /** - * Accumulates dispatches on an `SyntheticEvent`, but only for the - * `dispatchMarker`. - * @param {SyntheticEvent} event - */ + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); + } +} +/** + * Accumulates without regard to direction, does not look for phased + * registration names. Same as `accumulateDirectDispatchesSingle` but without + * requiring that the `dispatchMarker` be the same as the dispatched ID. + */ - function accumulateDirectDispatchesSingle$1(event) { - if (event && event.dispatchConfig.registrationName) { - accumulateDispatches$1(event._targetInst, null, event); - } - } - function accumulateDirectDispatches$1(events) { - forEachAccumulated(events, accumulateDirectDispatchesSingle$1); - } +function accumulateDispatches$1(inst, ignoredDirection, event) { + if (inst && event && event.dispatchConfig.registrationName) { + var registrationName = event.dispatchConfig.registrationName; + var listener = getListener$1(inst, registrationName); - function accumulateTwoPhaseDispatchesSingleSkipTarget(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - var targetInst = event._targetInst; - var parentInst = targetInst ? getParent$1(targetInst) : null; - traverseTwoPhase$1( - parentInst, - accumulateDirectionalDispatches$1, - event - ); - } + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); } + } +} +/** + * Accumulates dispatches on an `SyntheticEvent`, but only for the + * `dispatchMarker`. + * @param {SyntheticEvent} event + */ - function accumulateTwoPhaseDispatchesSkipTarget(events) { - forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget); - } - function accumulateTwoPhaseDispatchesSingle$1(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - traverseTwoPhase$1( - event._targetInst, - accumulateDirectionalDispatches$1, - event - ); - } - } +function accumulateDirectDispatchesSingle$1(event) { + if (event && event.dispatchConfig.registrationName) { + accumulateDispatches$1(event._targetInst, null, event); + } +} - function accumulateTwoPhaseDispatches$1(events) { - forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle$1); - } // End of inline +function accumulateDirectDispatches$1(events) { + forEachAccumulated(events, accumulateDirectDispatchesSingle$1); +} - /** - * - * Responder System: - * ---------------- - * - * - A global, solitary "interaction lock" on a view. - * - If a node becomes the responder, it should convey visual feedback - * immediately to indicate so, either by highlighting or moving accordingly. - * - To be the responder means, that touches are exclusively important to that - * responder view, and no other view. - * - While touches are still occurring, the responder lock can be transferred to - * a new view, but only to increasingly "higher" views (meaning ancestors of - * the current responder). - * - * Responder being granted: - * ------------------------ - * - * - Touch starts, moves, and scrolls can cause an ID to become the responder. - * - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to - * the "appropriate place". - * - If nothing is currently the responder, the "appropriate place" is the - * initiating event's `targetID`. - * - If something *is* already the responder, the "appropriate place" is the - * first common ancestor of the event target and the current `responderInst`. - * - Some negotiation happens: See the timing diagram below. - * - Scrolled views automatically become responder. The reasoning is that a - * platform scroll view that isn't built on top of the responder system has - * began scrolling, and the active responder must now be notified that the - * interaction is no longer locked to it - the system has taken over. - * - * - Responder being released: - * As soon as no more touches that *started* inside of descendants of the - * *current* responderInst, an `onResponderRelease` event is dispatched to the - * current responder, and the responder lock is released. - * - * TODO: - * - on "end", a callback hook for `onResponderEndShouldRemainResponder` that - * determines if the responder lock should remain. - * - If a view shouldn't "remain" the responder, any active touches should by - * default be considered "dead" and do not influence future negotiations or - * bubble paths. It should be as if those touches do not exist. - * -- For multitouch: Usually a translate-z will choose to "remain" responder - * after one out of many touches ended. For translate-y, usually the view - * doesn't wish to "remain" responder after one of many touches end. - * - Consider building this on top of a `stopPropagation` model similar to - * `W3C` events. - * - Ensure that `onResponderTerminate` is called on touch cancels, whether or - * not `onResponderTerminationRequest` returns `true` or `false`. - * - */ +function accumulateTwoPhaseDispatchesSingleSkipTarget(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + var targetInst = event._targetInst; + var parentInst = targetInst ? getParent$1(targetInst) : null; + traverseTwoPhase$1(parentInst, accumulateDirectionalDispatches$1, event); + } +} + +function accumulateTwoPhaseDispatchesSkipTarget(events) { + forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget); +} + +function accumulateTwoPhaseDispatchesSingle$1(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + traverseTwoPhase$1(event._targetInst, accumulateDirectionalDispatches$1, event); + } +} + +function accumulateTwoPhaseDispatches$1(events) { + forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle$1); +} // End of inline + +/** + * + * Responder System: + * ---------------- + * + * - A global, solitary "interaction lock" on a view. + * - If a node becomes the responder, it should convey visual feedback + * immediately to indicate so, either by highlighting or moving accordingly. + * - To be the responder means, that touches are exclusively important to that + * responder view, and no other view. + * - While touches are still occurring, the responder lock can be transferred to + * a new view, but only to increasingly "higher" views (meaning ancestors of + * the current responder). + * + * Responder being granted: + * ------------------------ + * + * - Touch starts, moves, and scrolls can cause an ID to become the responder. + * - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to + * the "appropriate place". + * - If nothing is currently the responder, the "appropriate place" is the + * initiating event's `targetID`. + * - If something *is* already the responder, the "appropriate place" is the + * first common ancestor of the event target and the current `responderInst`. + * - Some negotiation happens: See the timing diagram below. + * - Scrolled views automatically become responder. The reasoning is that a + * platform scroll view that isn't built on top of the responder system has + * began scrolling, and the active responder must now be notified that the + * interaction is no longer locked to it - the system has taken over. + * + * - Responder being released: + * As soon as no more touches that *started* inside of descendants of the + * *current* responderInst, an `onResponderRelease` event is dispatched to the + * current responder, and the responder lock is released. + * + * TODO: + * - on "end", a callback hook for `onResponderEndShouldRemainResponder` that + * determines if the responder lock should remain. + * - If a view shouldn't "remain" the responder, any active touches should by + * default be considered "dead" and do not influence future negotiations or + * bubble paths. It should be as if those touches do not exist. + * -- For multitouch: Usually a translate-z will choose to "remain" responder + * after one out of many touches ended. For translate-y, usually the view + * doesn't wish to "remain" responder after one of many touches end. + * - Consider building this on top of a `stopPropagation` model similar to + * `W3C` events. + * - Ensure that `onResponderTerminate` is called on touch cancels, whether or + * not `onResponderTerminationRequest` returns `true` or `false`. + * + */ - /* Negotiation Performed +/* Negotiation Performed +-----------------------+ / \ Process low level events to + Current Responder + wantsResponderID @@ -1490,8508 +1352,8198 @@ to return true:wantsResponderID| | | | + + */ - /** - * A note about event ordering in the `EventPluginRegistry`. - * - * Suppose plugins are injected in the following order: - * - * `[R, S, C]` - * - * To help illustrate the example, assume `S` is `SimpleEventPlugin` (for - * `onClick` etc) and `R` is `ResponderEventPlugin`. - * - * "Deferred-Dispatched Events": - * - * - The current event plugin system will traverse the list of injected plugins, - * in order, and extract events by collecting the plugin's return value of - * `extractEvents()`. - * - These events that are returned from `extractEvents` are "deferred - * dispatched events". - * - When returned from `extractEvents`, deferred-dispatched events contain an - * "accumulation" of deferred dispatches. - * - These deferred dispatches are accumulated/collected before they are - * returned, but processed at a later time by the `EventPluginRegistry` (hence the - * name deferred). - * - * In the process of returning their deferred-dispatched events, event plugins - * themselves can dispatch events on-demand without returning them from - * `extractEvents`. Plugins might want to do this, so that they can use event - * dispatching as a tool that helps them decide which events should be extracted - * in the first place. - * - * "On-Demand-Dispatched Events": - * - * - On-demand-dispatched events are not returned from `extractEvents`. - * - On-demand-dispatched events are dispatched during the process of returning - * the deferred-dispatched events. - * - They should not have side effects. - * - They should be avoided, and/or eventually be replaced with another - * abstraction that allows event plugins to perform multiple "rounds" of event - * extraction. - * - * Therefore, the sequence of event dispatches becomes: - * - * - `R`s on-demand events (if any) (dispatched by `R` on-demand) - * - `S`s on-demand events (if any) (dispatched by `S` on-demand) - * - `C`s on-demand events (if any) (dispatched by `C` on-demand) - * - `R`s extracted events (if any) (dispatched by `EventPluginRegistry`) - * - `S`s extracted events (if any) (dispatched by `EventPluginRegistry`) - * - `C`s extracted events (if any) (dispatched by `EventPluginRegistry`) - * - * In the case of `ResponderEventPlugin`: If the `startShouldSetResponder` - * on-demand dispatch returns `true` (and some other details are satisfied) the - * `onResponderGrant` deferred dispatched event is returned from - * `extractEvents`. The sequence of dispatch executions in this case - * will appear as follows: - * - * - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand) - * - `touchStartCapture` (`EventPluginRegistry` dispatches as usual) - * - `touchStart` (`EventPluginRegistry` dispatches as usual) - * - `responderGrant/Reject` (`EventPluginRegistry` dispatches as usual) - */ - - function setResponderAndExtractTransfer( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - var shouldSetEventType = isStartish(topLevelType) - ? eventTypes.startShouldSetResponder - : isMoveish(topLevelType) - ? eventTypes.moveShouldSetResponder - : topLevelType === TOP_SELECTION_CHANGE - ? eventTypes.selectionChangeShouldSetResponder - : eventTypes.scrollShouldSetResponder; // TODO: stop one short of the current responder. - - var bubbleShouldSetFrom = !responderInst - ? targetInst - : getLowestCommonAncestor(responderInst, targetInst); // When capturing/bubbling the "shouldSet" event, we want to skip the target - // (deepest ID) if it happens to be the current responder. The reasoning: - // It's strange to get an `onMoveShouldSetResponder` when you're *already* - // the responder. - - var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst; - var shouldSetEvent = ResponderSyntheticEvent.getPooled( - shouldSetEventType, - bubbleShouldSetFrom, - nativeEvent, - nativeEventTarget - ); - shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - - if (skipOverBubbleShouldSetFrom) { - accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent); - } else { - accumulateTwoPhaseDispatches$1(shouldSetEvent); - } - - var wantsResponderInst = - executeDispatchesInOrderStopAtTrue(shouldSetEvent); +/** + * A note about event ordering in the `EventPluginRegistry`. + * + * Suppose plugins are injected in the following order: + * + * `[R, S, C]` + * + * To help illustrate the example, assume `S` is `SimpleEventPlugin` (for + * `onClick` etc) and `R` is `ResponderEventPlugin`. + * + * "Deferred-Dispatched Events": + * + * - The current event plugin system will traverse the list of injected plugins, + * in order, and extract events by collecting the plugin's return value of + * `extractEvents()`. + * - These events that are returned from `extractEvents` are "deferred + * dispatched events". + * - When returned from `extractEvents`, deferred-dispatched events contain an + * "accumulation" of deferred dispatches. + * - These deferred dispatches are accumulated/collected before they are + * returned, but processed at a later time by the `EventPluginRegistry` (hence the + * name deferred). + * + * In the process of returning their deferred-dispatched events, event plugins + * themselves can dispatch events on-demand without returning them from + * `extractEvents`. Plugins might want to do this, so that they can use event + * dispatching as a tool that helps them decide which events should be extracted + * in the first place. + * + * "On-Demand-Dispatched Events": + * + * - On-demand-dispatched events are not returned from `extractEvents`. + * - On-demand-dispatched events are dispatched during the process of returning + * the deferred-dispatched events. + * - They should not have side effects. + * - They should be avoided, and/or eventually be replaced with another + * abstraction that allows event plugins to perform multiple "rounds" of event + * extraction. + * + * Therefore, the sequence of event dispatches becomes: + * + * - `R`s on-demand events (if any) (dispatched by `R` on-demand) + * - `S`s on-demand events (if any) (dispatched by `S` on-demand) + * - `C`s on-demand events (if any) (dispatched by `C` on-demand) + * - `R`s extracted events (if any) (dispatched by `EventPluginRegistry`) + * - `S`s extracted events (if any) (dispatched by `EventPluginRegistry`) + * - `C`s extracted events (if any) (dispatched by `EventPluginRegistry`) + * + * In the case of `ResponderEventPlugin`: If the `startShouldSetResponder` + * on-demand dispatch returns `true` (and some other details are satisfied) the + * `onResponderGrant` deferred dispatched event is returned from + * `extractEvents`. The sequence of dispatch executions in this case + * will appear as follows: + * + * - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand) + * - `touchStartCapture` (`EventPluginRegistry` dispatches as usual) + * - `touchStart` (`EventPluginRegistry` dispatches as usual) + * - `responderGrant/Reject` (`EventPluginRegistry` dispatches as usual) + */ - if (!shouldSetEvent.isPersistent()) { - shouldSetEvent.constructor.release(shouldSetEvent); - } - if (!wantsResponderInst || wantsResponderInst === responderInst) { - return null; - } +function setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var shouldSetEventType = isStartish(topLevelType) ? eventTypes.startShouldSetResponder : isMoveish(topLevelType) ? eventTypes.moveShouldSetResponder : topLevelType === TOP_SELECTION_CHANGE ? eventTypes.selectionChangeShouldSetResponder : eventTypes.scrollShouldSetResponder; // TODO: stop one short of the current responder. + + var bubbleShouldSetFrom = !responderInst ? targetInst : getLowestCommonAncestor(responderInst, targetInst); // When capturing/bubbling the "shouldSet" event, we want to skip the target + // (deepest ID) if it happens to be the current responder. The reasoning: + // It's strange to get an `onMoveShouldSetResponder` when you're *already* + // the responder. + + var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst; + var shouldSetEvent = ResponderSyntheticEvent.getPooled(shouldSetEventType, bubbleShouldSetFrom, nativeEvent, nativeEventTarget); + shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + + if (skipOverBubbleShouldSetFrom) { + accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent); + } else { + accumulateTwoPhaseDispatches$1(shouldSetEvent); + } + + var wantsResponderInst = executeDispatchesInOrderStopAtTrue(shouldSetEvent); + + if (!shouldSetEvent.isPersistent()) { + shouldSetEvent.constructor.release(shouldSetEvent); + } + + if (!wantsResponderInst || wantsResponderInst === responderInst) { + return null; + } + + var extracted; + var grantEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderGrant, wantsResponderInst, nativeEvent, nativeEventTarget); + grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(grantEvent); + var blockHostResponder = executeDirectDispatch(grantEvent) === true; + + if (responderInst) { + var terminationRequestEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminationRequest, responderInst, nativeEvent, nativeEventTarget); + terminationRequestEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(terminationRequestEvent); + var shouldSwitch = !hasDispatches(terminationRequestEvent) || executeDirectDispatch(terminationRequestEvent); + + if (!terminationRequestEvent.isPersistent()) { + terminationRequestEvent.constructor.release(terminationRequestEvent); + } + + if (shouldSwitch) { + var terminateEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminate, responderInst, nativeEvent, nativeEventTarget); + terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(terminateEvent); + extracted = accumulate(extracted, [grantEvent, terminateEvent]); + changeResponder(wantsResponderInst, blockHostResponder); + } else { + var rejectEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderReject, wantsResponderInst, nativeEvent, nativeEventTarget); + rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(rejectEvent); + extracted = accumulate(extracted, rejectEvent); + } + } else { + extracted = accumulate(extracted, grantEvent); + changeResponder(wantsResponderInst, blockHostResponder); + } + + return extracted; +} +/** + * A transfer is a negotiation between a currently set responder and the next + * element to claim responder status. Any start event could trigger a transfer + * of responderInst. Any move event could trigger a transfer. + * + * @param {string} topLevelType Record from `BrowserEventConstants`. + * @return {boolean} True if a transfer of responder could possibly occur. + */ - var extracted; - var grantEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderGrant, - wantsResponderInst, - nativeEvent, - nativeEventTarget - ); - grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(grantEvent); - var blockHostResponder = executeDirectDispatch(grantEvent) === true; - - if (responderInst) { - var terminationRequestEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderTerminationRequest, - responderInst, - nativeEvent, - nativeEventTarget - ); - terminationRequestEvent.touchHistory = - ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(terminationRequestEvent); - var shouldSwitch = - !hasDispatches(terminationRequestEvent) || - executeDirectDispatch(terminationRequestEvent); - - if (!terminationRequestEvent.isPersistent()) { - terminationRequestEvent.constructor.release(terminationRequestEvent); - } - - if (shouldSwitch) { - var terminateEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderTerminate, - responderInst, - nativeEvent, - nativeEventTarget - ); - terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(terminateEvent); - extracted = accumulate(extracted, [grantEvent, terminateEvent]); - changeResponder(wantsResponderInst, blockHostResponder); - } else { - var rejectEvent = ResponderSyntheticEvent.getPooled( - eventTypes.responderReject, - wantsResponderInst, - nativeEvent, - nativeEventTarget - ); - rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(rejectEvent); - extracted = accumulate(extracted, rejectEvent); - } - } else { - extracted = accumulate(extracted, grantEvent); - changeResponder(wantsResponderInst, blockHostResponder); - } - return extracted; - } - /** - * A transfer is a negotiation between a currently set responder and the next - * element to claim responder status. Any start event could trigger a transfer - * of responderInst. Any move event could trigger a transfer. - * - * @param {string} topLevelType Record from `BrowserEventConstants`. - * @return {boolean} True if a transfer of responder could possibly occur. - */ +function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) { + return topLevelInst && ( // responderIgnoreScroll: We are trying to migrate away from specifically + // tracking native scroll events here and responderIgnoreScroll indicates we + // will send topTouchCancel to handle canceling touch events instead + topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll || trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE || isStartish(topLevelType) || isMoveish(topLevelType)); +} +/** + * Returns whether or not this touch end event makes it such that there are no + * longer any touches that started inside of the current `responderInst`. + * + * @param {NativeEvent} nativeEvent Native touch end event. + * @return {boolean} Whether or not this touch end event ends the responder. + */ - function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) { - return ( - topLevelInst && // responderIgnoreScroll: We are trying to migrate away from specifically - // tracking native scroll events here and responderIgnoreScroll indicates we - // will send topTouchCancel to handle canceling touch events instead - ((topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll) || - (trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE) || - isStartish(topLevelType) || - isMoveish(topLevelType)) - ); - } - /** - * Returns whether or not this touch end event makes it such that there are no - * longer any touches that started inside of the current `responderInst`. - * - * @param {NativeEvent} nativeEvent Native touch end event. - * @return {boolean} Whether or not this touch end event ends the responder. - */ - function noResponderTouches(nativeEvent) { - var touches = nativeEvent.touches; +function noResponderTouches(nativeEvent) { + var touches = nativeEvent.touches; - if (!touches || touches.length === 0) { - return true; - } + if (!touches || touches.length === 0) { + return true; + } - for (var i = 0; i < touches.length; i++) { - var activeTouch = touches[i]; - var target = activeTouch.target; + for (var i = 0; i < touches.length; i++) { + var activeTouch = touches[i]; + var target = activeTouch.target; - if (target !== null && target !== undefined && target !== 0) { - // Is the original touch location inside of the current responder? - var targetInst = getInstanceFromNode(target); + if (target !== null && target !== undefined && target !== 0) { + // Is the original touch location inside of the current responder? + var targetInst = getInstanceFromNode(target); - if (isAncestor(responderInst, targetInst)) { - return false; - } - } + if (isAncestor(responderInst, targetInst)) { + return false; } - - return true; } + } - var ResponderEventPlugin = { - /* For unit testing only */ - _getResponder: function () { - return responderInst; - }, - eventTypes: eventTypes, - - /** - * We must be resilient to `targetInst` being `null` on `touchMove` or - * `touchEnd`. On certain platforms, this means that a native scroll has - * assumed control and the original touch targets are destroyed. - */ - extractEvents: function ( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget, - eventSystemFlags - ) { - if (isStartish(topLevelType)) { - trackedTouchCount += 1; - } else if (isEndish(topLevelType)) { - if (trackedTouchCount >= 0) { - trackedTouchCount -= 1; - } else { - { - warn( - "Ended a touch event which was not counted in `trackedTouchCount`." - ); - } + return true; +} - return null; - } +var ResponderEventPlugin = { + /* For unit testing only */ + _getResponder: function () { + return responderInst; + }, + eventTypes: eventTypes, + + /** + * We must be resilient to `targetInst` being `null` on `touchMove` or + * `touchEnd`. On certain platforms, this means that a native scroll has + * assumed control and the original touch targets are destroyed. + */ + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) { + if (isStartish(topLevelType)) { + trackedTouchCount += 1; + } else if (isEndish(topLevelType)) { + if (trackedTouchCount >= 0) { + trackedTouchCount -= 1; + } else { + { + warn('Ended a touch event which was not counted in `trackedTouchCount`.'); } - ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent); - var extracted = canTriggerTransfer( - topLevelType, - targetInst, - nativeEvent - ) - ? setResponderAndExtractTransfer( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) - : null; // Responder may or may not have transferred on a new touch start/move. - // Regardless, whoever is the responder after any potential transfer, we - // direct all touch start/move/ends to them in the form of - // `onResponderMove/Start/End`. These will be called for *every* additional - // finger that move/start/end, dispatched directly to whoever is the - // current responder at that moment, until the responder is "released". - // - // These multiple individual change touch events are are always bookended - // by `onResponderGrant`, and one of - // (`onResponderRelease/onResponderTerminate`). - - var isResponderTouchStart = responderInst && isStartish(topLevelType); - var isResponderTouchMove = responderInst && isMoveish(topLevelType); - var isResponderTouchEnd = responderInst && isEndish(topLevelType); - var incrementalTouch = isResponderTouchStart - ? eventTypes.responderStart - : isResponderTouchMove - ? eventTypes.responderMove - : isResponderTouchEnd - ? eventTypes.responderEnd - : null; - - if (incrementalTouch) { - var gesture = ResponderSyntheticEvent.getPooled( - incrementalTouch, - responderInst, - nativeEvent, - nativeEventTarget - ); - gesture.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(gesture); - extracted = accumulate(extracted, gesture); - } - - var isResponderTerminate = - responderInst && topLevelType === TOP_TOUCH_CANCEL; - var isResponderRelease = - responderInst && - !isResponderTerminate && - isEndish(topLevelType) && - noResponderTouches(nativeEvent); - var finalTouch = isResponderTerminate - ? eventTypes.responderTerminate - : isResponderRelease - ? eventTypes.responderRelease - : null; - - if (finalTouch) { - var finalEvent = ResponderSyntheticEvent.getPooled( - finalTouch, - responderInst, - nativeEvent, - nativeEventTarget - ); - finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; - accumulateDirectDispatches$1(finalEvent); - extracted = accumulate(extracted, finalEvent); - changeResponder(null); - } - - return extracted; - }, - GlobalResponderHandler: null, - injection: { - /** - * @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler - * Object that handles any change in responder. Use this to inject - * integration with an existing touch handling system etc. - */ - injectGlobalResponderHandler: function (GlobalResponderHandler) { - ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler; - } + return null; } - }; - - /** - * Injectable ordering of event plugins. - */ - var eventPluginOrder = null; - /** - * Injectable mapping from names to event plugin modules. - */ + } - var namesToPlugins = {}; + ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent); + var extracted = canTriggerTransfer(topLevelType, targetInst, nativeEvent) ? setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) : null; // Responder may or may not have transferred on a new touch start/move. + // Regardless, whoever is the responder after any potential transfer, we + // direct all touch start/move/ends to them in the form of + // `onResponderMove/Start/End`. These will be called for *every* additional + // finger that move/start/end, dispatched directly to whoever is the + // current responder at that moment, until the responder is "released". + // + // These multiple individual change touch events are are always bookended + // by `onResponderGrant`, and one of + // (`onResponderRelease/onResponderTerminate`). + + var isResponderTouchStart = responderInst && isStartish(topLevelType); + var isResponderTouchMove = responderInst && isMoveish(topLevelType); + var isResponderTouchEnd = responderInst && isEndish(topLevelType); + var incrementalTouch = isResponderTouchStart ? eventTypes.responderStart : isResponderTouchMove ? eventTypes.responderMove : isResponderTouchEnd ? eventTypes.responderEnd : null; + + if (incrementalTouch) { + var gesture = ResponderSyntheticEvent.getPooled(incrementalTouch, responderInst, nativeEvent, nativeEventTarget); + gesture.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(gesture); + extracted = accumulate(extracted, gesture); + } + + var isResponderTerminate = responderInst && topLevelType === TOP_TOUCH_CANCEL; + var isResponderRelease = responderInst && !isResponderTerminate && isEndish(topLevelType) && noResponderTouches(nativeEvent); + var finalTouch = isResponderTerminate ? eventTypes.responderTerminate : isResponderRelease ? eventTypes.responderRelease : null; + + if (finalTouch) { + var finalEvent = ResponderSyntheticEvent.getPooled(finalTouch, responderInst, nativeEvent, nativeEventTarget); + finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory; + accumulateDirectDispatches$1(finalEvent); + extracted = accumulate(extracted, finalEvent); + changeResponder(null); + } + + return extracted; + }, + GlobalResponderHandler: null, + injection: { /** - * Recomputes the plugin list using the injected plugins and plugin ordering. - * - * @private + * @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler + * Object that handles any change in responder. Use this to inject + * integration with an existing touch handling system etc. */ + injectGlobalResponderHandler: function (GlobalResponderHandler) { + ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler; + } + } +}; - function recomputePluginOrdering() { - if (!eventPluginOrder) { - // Wait until an `eventPluginOrder` is injected. - return; - } +/** + * Injectable ordering of event plugins. + */ +var eventPluginOrder = null; +/** + * Injectable mapping from names to event plugin modules. + */ - for (var pluginName in namesToPlugins) { - var pluginModule = namesToPlugins[pluginName]; // $FlowFixMe[incompatible-use] found when upgrading Flow +var namesToPlugins = {}; +/** + * Recomputes the plugin list using the injected plugins and plugin ordering. + * + * @private + */ - var pluginIndex = eventPluginOrder.indexOf(pluginName); +function recomputePluginOrdering() { + if (!eventPluginOrder) { + // Wait until an `eventPluginOrder` is injected. + return; + } - if (pluginIndex <= -1) { - throw new Error( - "EventPluginRegistry: Cannot inject event plugins that do not exist in " + - ("the plugin ordering, `" + pluginName + "`.") - ); - } + for (var pluginName in namesToPlugins) { + var pluginModule = namesToPlugins[pluginName]; // $FlowFixMe[incompatible-use] found when upgrading Flow - if (plugins[pluginIndex]) { - continue; - } + var pluginIndex = eventPluginOrder.indexOf(pluginName); - if (!pluginModule.extractEvents) { - throw new Error( - "EventPluginRegistry: Event plugins must implement an `extractEvents` " + - ("method, but `" + pluginName + "` does not.") - ); - } - - plugins[pluginIndex] = pluginModule; - var publishedEvents = pluginModule.eventTypes; - - for (var eventName in publishedEvents) { - if ( - !publishEventForPlugin( - publishedEvents[eventName], - pluginModule, - eventName - ) - ) { - throw new Error( - "EventPluginRegistry: Failed to publish event `" + - eventName + - "` for plugin `" + - pluginName + - "`." - ); - } - } - } + if (pluginIndex <= -1) { + throw new Error('EventPluginRegistry: Cannot inject event plugins that do not exist in ' + ("the plugin ordering, `" + pluginName + "`.")); } - /** - * Publishes an event so that it can be dispatched by the supplied plugin. - * - * @param {object} dispatchConfig Dispatch configuration for the event. - * @param {object} PluginModule Plugin publishing the event. - * @return {boolean} True if the event was successfully published. - * @private - */ - function publishEventForPlugin(dispatchConfig, pluginModule, eventName) { - if (eventNameDispatchConfigs.hasOwnProperty(eventName)) { - throw new Error( - "EventPluginRegistry: More than one plugin attempted to publish the same " + - ("event name, `" + eventName + "`.") - ); - } + if (plugins[pluginIndex]) { + continue; + } - eventNameDispatchConfigs[eventName] = dispatchConfig; - var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames; + if (!pluginModule.extractEvents) { + throw new Error('EventPluginRegistry: Event plugins must implement an `extractEvents` ' + ("method, but `" + pluginName + "` does not.")); + } - if (phasedRegistrationNames) { - for (var phaseName in phasedRegistrationNames) { - if (phasedRegistrationNames.hasOwnProperty(phaseName)) { - var phasedRegistrationName = phasedRegistrationNames[phaseName]; - publishRegistrationName(phasedRegistrationName, pluginModule); - } - } + plugins[pluginIndex] = pluginModule; + var publishedEvents = pluginModule.eventTypes; - return true; - } else if (dispatchConfig.registrationName) { - publishRegistrationName(dispatchConfig.registrationName, pluginModule); - return true; + for (var eventName in publishedEvents) { + if (!publishEventForPlugin(publishedEvents[eventName], pluginModule, eventName)) { + throw new Error("EventPluginRegistry: Failed to publish event `" + eventName + "` for plugin `" + pluginName + "`."); } - - return false; } - /** - * Publishes a registration name that is used to identify dispatched events. - * - * @param {string} registrationName Registration name to add. - * @param {object} PluginModule Plugin publishing the event. - * @private - */ + } +} +/** + * Publishes an event so that it can be dispatched by the supplied plugin. + * + * @param {object} dispatchConfig Dispatch configuration for the event. + * @param {object} PluginModule Plugin publishing the event. + * @return {boolean} True if the event was successfully published. + * @private + */ - function publishRegistrationName( - registrationName, - pluginModule, - eventName - ) { - if (registrationNameModules[registrationName]) { - throw new Error( - "EventPluginRegistry: More than one plugin attempted to publish the same " + - ("registration name, `" + registrationName + "`.") - ); - } - registrationNameModules[registrationName] = pluginModule; +function publishEventForPlugin(dispatchConfig, pluginModule, eventName) { + if (eventNameDispatchConfigs.hasOwnProperty(eventName)) { + throw new Error('EventPluginRegistry: More than one plugin attempted to publish the same ' + ("event name, `" + eventName + "`.")); + } - { - registrationName.toLowerCase(); + eventNameDispatchConfigs[eventName] = dispatchConfig; + var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames; + + if (phasedRegistrationNames) { + for (var phaseName in phasedRegistrationNames) { + if (phasedRegistrationNames.hasOwnProperty(phaseName)) { + var phasedRegistrationName = phasedRegistrationNames[phaseName]; + publishRegistrationName(phasedRegistrationName, pluginModule); } } - /** - * Registers plugins so that they can extract and dispatch events. - */ - - /** - * Ordered list of injected plugins. - */ - var plugins = []; - /** - * Mapping from event name to dispatch config - */ + return true; + } else if (dispatchConfig.registrationName) { + publishRegistrationName(dispatchConfig.registrationName, pluginModule); + return true; + } - var eventNameDispatchConfigs = {}; - /** - * Mapping from registration name to plugin module - */ + return false; +} +/** + * Publishes a registration name that is used to identify dispatched events. + * + * @param {string} registrationName Registration name to add. + * @param {object} PluginModule Plugin publishing the event. + * @private + */ - var registrationNameModules = {}; - /** - * Injects an ordering of plugins (by plugin name). This allows the ordering - * to be decoupled from injection of the actual plugins so that ordering is - * always deterministic regardless of packaging, on-the-fly injection, etc. - * - * @param {array} InjectedEventPluginOrder - * @internal - */ +function publishRegistrationName(registrationName, pluginModule, eventName) { + if (registrationNameModules[registrationName]) { + throw new Error('EventPluginRegistry: More than one plugin attempted to publish the same ' + ("registration name, `" + registrationName + "`.")); + } - function injectEventPluginOrder(injectedEventPluginOrder) { - if (eventPluginOrder) { - throw new Error( - "EventPluginRegistry: Cannot inject event plugin ordering more than " + - "once. You are likely trying to load more than one copy of React." - ); - } // Clone the ordering so it cannot be dynamically mutated. - // $FlowFixMe[method-unbinding] found when upgrading Flow + registrationNameModules[registrationName] = pluginModule; - eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder); - recomputePluginOrdering(); - } - /** - * Injects plugins to be used by plugin event system. The plugin names must be - * in the ordering injected by `injectEventPluginOrder`. - * - * Plugins can be injected as part of page initialization or on-the-fly. - * - * @param {object} injectedNamesToPlugins Map from names to plugin modules. - * @internal - */ + { + registrationName.toLowerCase(); + } +} +/** + * Registers plugins so that they can extract and dispatch events. + */ - function injectEventPluginsByName(injectedNamesToPlugins) { - var isOrderingDirty = false; +/** + * Ordered list of injected plugins. + */ - for (var pluginName in injectedNamesToPlugins) { - if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) { - continue; - } - var pluginModule = injectedNamesToPlugins[pluginName]; +var plugins = []; +/** + * Mapping from event name to dispatch config + */ - if ( - !namesToPlugins.hasOwnProperty(pluginName) || - namesToPlugins[pluginName] !== pluginModule - ) { - if (namesToPlugins[pluginName]) { - throw new Error( - "EventPluginRegistry: Cannot inject two different event plugins " + - ("using the same name, `" + pluginName + "`.") - ); - } +var eventNameDispatchConfigs = {}; +/** + * Mapping from registration name to plugin module + */ - namesToPlugins[pluginName] = pluginModule; - isOrderingDirty = true; - } - } +var registrationNameModules = {}; - if (isOrderingDirty) { - recomputePluginOrdering(); - } - } +/** + * Injects an ordering of plugins (by plugin name). This allows the ordering + * to be decoupled from injection of the actual plugins so that ordering is + * always deterministic regardless of packaging, on-the-fly injection, etc. + * + * @param {array} InjectedEventPluginOrder + * @internal + */ - function getListener(inst, registrationName) { - var stateNode = inst.stateNode; +function injectEventPluginOrder(injectedEventPluginOrder) { + if (eventPluginOrder) { + throw new Error('EventPluginRegistry: Cannot inject event plugin ordering more than ' + 'once. You are likely trying to load more than one copy of React.'); + } // Clone the ordering so it cannot be dynamically mutated. + // $FlowFixMe[method-unbinding] found when upgrading Flow - if (stateNode === null) { - // Work in progress (ex: onload events in incremental mode). - return null; - } - var props = getFiberCurrentPropsFromNode$1(stateNode); + eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder); + recomputePluginOrdering(); +} +/** + * Injects plugins to be used by plugin event system. The plugin names must be + * in the ordering injected by `injectEventPluginOrder`. + * + * Plugins can be injected as part of page initialization or on-the-fly. + * + * @param {object} injectedNamesToPlugins Map from names to plugin modules. + * @internal + */ + +function injectEventPluginsByName(injectedNamesToPlugins) { + var isOrderingDirty = false; - if (props === null) { - // Work in progress. - return null; - } + for (var pluginName in injectedNamesToPlugins) { + if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) { + continue; + } - var listener = props[registrationName]; + var pluginModule = injectedNamesToPlugins[pluginName]; - if (listener && typeof listener !== "function") { - throw new Error( - "Expected `" + - registrationName + - "` listener to be a function, instead got a value of `" + - typeof listener + - "` type." - ); + if (!namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule) { + if (namesToPlugins[pluginName]) { + throw new Error('EventPluginRegistry: Cannot inject two different event plugins ' + ("using the same name, `" + pluginName + "`.")); } - return listener; + namesToPlugins[pluginName] = pluginModule; + isOrderingDirty = true; } + } - var customBubblingEventTypes = - ReactNativePrivateInterface.ReactNativeViewConfigRegistry - .customBubblingEventTypes, - customDirectEventTypes = - ReactNativePrivateInterface.ReactNativeViewConfigRegistry - .customDirectEventTypes; // Start of inline: the below functions were inlined from - // EventPropagator.js, as they deviated from ReactDOM's newer - // implementations. - // $FlowFixMe[missing-local-annot] + if (isOrderingDirty) { + recomputePluginOrdering(); + } +} - function listenerAtPhase(inst, event, propagationPhase) { - var registrationName = - event.dispatchConfig.phasedRegistrationNames[propagationPhase]; - return getListener(inst, registrationName); - } // $FlowFixMe[missing-local-annot] +function getListener(inst, registrationName) { + var stateNode = inst.stateNode; - function accumulateDirectionalDispatches(inst, phase, event) { - { - if (!inst) { - error("Dispatching inst must not be null"); - } - } + if (stateNode === null) { + // Work in progress (ex: onload events in incremental mode). + return null; + } - var listener = listenerAtPhase(inst, event, phase); + var props = getFiberCurrentPropsFromNode$1(stateNode); - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } - } // $FlowFixMe[missing-local-annot] + if (props === null) { + // Work in progress. + return null; + } - function getParent(inst) { - do { - inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. - // That is depending on if we want nested subtrees (layers) to bubble - // events to their parent. We could also go through parentNode on the - // host node but that wouldn't work for React Native and doesn't let us - // do the portal feature. - } while (inst && inst.tag !== HostComponent); + var listener = props[registrationName]; - if (inst) { - return inst; - } + if (listener && typeof listener !== 'function') { + throw new Error("Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type."); + } - return null; - } - /** - * Simulates the traversal of a two-phase, capture/bubble event dispatch. - */ + return listener; +} - function traverseTwoPhase(inst, fn, arg, skipBubbling) { - var path = []; +var customBubblingEventTypes = ReactNativePrivateInterface.ReactNativeViewConfigRegistry.customBubblingEventTypes, + customDirectEventTypes = ReactNativePrivateInterface.ReactNativeViewConfigRegistry.customDirectEventTypes; // Start of inline: the below functions were inlined from +// EventPropagator.js, as they deviated from ReactDOM's newer +// implementations. +// $FlowFixMe[missing-local-annot] - while (inst) { - path.push(inst); - inst = getParent(inst); - } +function listenerAtPhase(inst, event, propagationPhase) { + var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase]; + return getListener(inst, registrationName); +} // $FlowFixMe[missing-local-annot] - var i; - for (i = path.length; i-- > 0; ) { - fn(path[i], "captured", arg); - } +function accumulateDirectionalDispatches(inst, phase, event) { + { + if (!inst) { + error('Dispatching inst must not be null'); + } + } - if (skipBubbling) { - // Dispatch on target only - fn(path[0], "bubbled", arg); - } else { - for (i = 0; i < path.length; i++) { - fn(path[i], "bubbled", arg); - } - } - } // $FlowFixMe[missing-local-annot] + var listener = listenerAtPhase(inst, event, phase); - function accumulateTwoPhaseDispatchesSingle(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - traverseTwoPhase( - event._targetInst, - accumulateDirectionalDispatches, - event, - false - ); - } - } // $FlowFixMe[missing-local-annot] + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); + } +} // $FlowFixMe[missing-local-annot] - function accumulateTwoPhaseDispatches(events) { - forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle); - } // $FlowFixMe[missing-local-annot] - function accumulateCapturePhaseDispatches(event) { - if (event && event.dispatchConfig.phasedRegistrationNames) { - traverseTwoPhase( - event._targetInst, - accumulateDirectionalDispatches, - event, - true - ); - } - } - /** - * Accumulates without regard to direction, does not look for phased - * registration names. Same as `accumulateDirectDispatchesSingle` but without - * requiring that the `dispatchMarker` be the same as the dispatched ID. - */ +function getParent(inst) { + do { + inst = inst.return; // TODO: If this is a HostRoot we might want to bail out. + // That is depending on if we want nested subtrees (layers) to bubble + // events to their parent. We could also go through parentNode on the + // host node but that wouldn't work for React Native and doesn't let us + // do the portal feature. + } while (inst && inst.tag !== HostComponent); - function accumulateDispatches(inst, ignoredDirection, event) { - if (inst && event && event.dispatchConfig.registrationName) { - var registrationName = event.dispatchConfig.registrationName; - var listener = getListener(inst, registrationName); + if (inst) { + return inst; + } - if (listener) { - event._dispatchListeners = accumulateInto( - event._dispatchListeners, - listener - ); - event._dispatchInstances = accumulateInto( - event._dispatchInstances, - inst - ); - } - } - } - /** - * Accumulates dispatches on an `SyntheticEvent`, but only for the - * `dispatchMarker`. - * @param {SyntheticEvent} event - */ + return null; +} +/** + * Simulates the traversal of a two-phase, capture/bubble event dispatch. + */ - function accumulateDirectDispatchesSingle(event) { - if (event && event.dispatchConfig.registrationName) { - accumulateDispatches(event._targetInst, null, event); - } - } - function accumulateDirectDispatches(events) { - forEachAccumulated(events, accumulateDirectDispatchesSingle); - } // End of inline +function traverseTwoPhase(inst, fn, arg, skipBubbling) { + var path = []; - var ReactNativeBridgeEventPlugin = { - eventTypes: {}, - extractEvents: function ( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - if (targetInst == null) { - // Probably a node belonging to another renderer's tree. - return null; - } + while (inst) { + path.push(inst); + inst = getParent(inst); + } - var bubbleDispatchConfig = customBubblingEventTypes[topLevelType]; - var directDispatchConfig = customDirectEventTypes[topLevelType]; + var i; - if (!bubbleDispatchConfig && !directDispatchConfig) { - throw new Error( // $FlowFixMe[incompatible-type] - Flow doesn't like this string coercion because DOMTopLevelEventType is opaque - 'Unsupported top level event type "' + topLevelType + '" dispatched' - ); - } + for (i = path.length; i-- > 0;) { + fn(path[i], 'captured', arg); + } - var event = SyntheticEvent.getPooled( - bubbleDispatchConfig || directDispatchConfig, - targetInst, - nativeEvent, - nativeEventTarget - ); + if (skipBubbling) { + // Dispatch on target only + fn(path[0], 'bubbled', arg); + } else { + for (i = 0; i < path.length; i++) { + fn(path[i], 'bubbled', arg); + } + } +} // $FlowFixMe[missing-local-annot] - if (bubbleDispatchConfig) { - var skipBubbling = - event != null && - event.dispatchConfig.phasedRegistrationNames != null && - event.dispatchConfig.phasedRegistrationNames.skipBubbling; +function accumulateTwoPhaseDispatchesSingle(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event, false); + } +} // $FlowFixMe[missing-local-annot] - if (skipBubbling) { - accumulateCapturePhaseDispatches(event); - } else { - accumulateTwoPhaseDispatches(event); - } - } else if (directDispatchConfig) { - accumulateDirectDispatches(event); - } else { - return null; - } - return event; - } - }; +function accumulateTwoPhaseDispatches(events) { + forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle); +} // $FlowFixMe[missing-local-annot] - var ReactNativeEventPluginOrder = [ - "ResponderEventPlugin", - "ReactNativeBridgeEventPlugin" - ]; - /** - * Make sure essential globals are available and are patched correctly. Please don't remove this - * line. Bundles created by react-packager `require` it before executing any application code. This - * ensures it exists in the dependency graph and can be `require`d. - * TODO: require this in packager, not in React #10932517 - */ - /** - * Inject module for resolving DOM hierarchy and plugin ordering. - */ +function accumulateCapturePhaseDispatches(event) { + if (event && event.dispatchConfig.phasedRegistrationNames) { + traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event, true); + } +} +/** + * Accumulates without regard to direction, does not look for phased + * registration names. Same as `accumulateDirectDispatchesSingle` but without + * requiring that the `dispatchMarker` be the same as the dispatched ID. + */ - injectEventPluginOrder(ReactNativeEventPluginOrder); - /** - * Some important event plugins included by default (without having to require - * them). - */ - injectEventPluginsByName({ - ResponderEventPlugin: ResponderEventPlugin, - ReactNativeBridgeEventPlugin: ReactNativeBridgeEventPlugin - }); +function accumulateDispatches(inst, ignoredDirection, event) { + if (inst && event && event.dispatchConfig.registrationName) { + var registrationName = event.dispatchConfig.registrationName; + var listener = getListener(inst, registrationName); - var instanceCache = new Map(); - var instanceProps = new Map(); - function precacheFiberNode(hostInst, tag) { - instanceCache.set(tag, hostInst); - } - function uncacheFiberNode(tag) { - instanceCache.delete(tag); - instanceProps.delete(tag); + if (listener) { + event._dispatchListeners = accumulateInto(event._dispatchListeners, listener); + event._dispatchInstances = accumulateInto(event._dispatchInstances, inst); } + } +} +/** + * Accumulates dispatches on an `SyntheticEvent`, but only for the + * `dispatchMarker`. + * @param {SyntheticEvent} event + */ - function getInstanceFromTag(tag) { - return instanceCache.get(tag) || null; - } - function getTagFromInstance(inst) { - var nativeInstance = inst.stateNode; - var tag = nativeInstance._nativeTag; +function accumulateDirectDispatchesSingle(event) { + if (event && event.dispatchConfig.registrationName) { + accumulateDispatches(event._targetInst, null, event); + } +} - if (tag === undefined && nativeInstance.canonical != null) { - // For compatibility with Fabric - tag = nativeInstance.canonical.nativeTag; - nativeInstance = nativeInstance.canonical.publicInstance; - } +function accumulateDirectDispatches(events) { + forEachAccumulated(events, accumulateDirectDispatchesSingle); +} // End of inline - if (!tag) { - throw new Error("All native instances should have a tag."); - } - return nativeInstance; - } - function getFiberCurrentPropsFromNode(stateNode) { - return instanceProps.get(stateNode._nativeTag) || null; - } - function updateFiberProps(tag, props) { - instanceProps.set(tag, props); +var ReactNativeBridgeEventPlugin = { + eventTypes: {}, + extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget) { + if (targetInst == null) { + // Probably a node belonging to another renderer's tree. + return null; } - // Used as a way to call batchedUpdates when we don't have a reference to - // the renderer. Such as when we're dispatching events or if third party - // libraries need to call batchedUpdates. Eventually, this API will go away when - // everything is batched by default. We'll then have a similar API to opt-out of - // scheduled work and instead do synchronous work. - // Defaults - var batchedUpdatesImpl = function (fn, bookkeeping) { - return fn(bookkeeping); - }; + var bubbleDispatchConfig = customBubblingEventTypes[topLevelType]; + var directDispatchConfig = customDirectEventTypes[topLevelType]; - var isInsideEventHandler = false; - function batchedUpdates$1(fn, bookkeeping) { - if (isInsideEventHandler) { - // If we are currently inside another batch, we need to wait until it - // fully completes before restoring state. - return fn(bookkeeping); - } + if (!bubbleDispatchConfig && !directDispatchConfig) { + throw new Error( // $FlowFixMe[incompatible-type] - Flow doesn't like this string coercion because DOMTopLevelEventType is opaque + "Unsupported top level event type \"" + topLevelType + "\" dispatched"); + } - isInsideEventHandler = true; + var event = SyntheticEvent.getPooled(bubbleDispatchConfig || directDispatchConfig, targetInst, nativeEvent, nativeEventTarget); - try { - return batchedUpdatesImpl(fn, bookkeeping); - } finally { - isInsideEventHandler = false; + if (bubbleDispatchConfig) { + var skipBubbling = event != null && event.dispatchConfig.phasedRegistrationNames != null && event.dispatchConfig.phasedRegistrationNames.skipBubbling; + + if (skipBubbling) { + accumulateCapturePhaseDispatches(event); + } else { + accumulateTwoPhaseDispatches(event); } - } - function setBatchingImplementation( - _batchedUpdatesImpl, - _discreteUpdatesImpl - ) { - batchedUpdatesImpl = _batchedUpdatesImpl; + } else if (directDispatchConfig) { + accumulateDirectDispatches(event); + } else { + return null; } - /** - * Internal queue of events that have accumulated their dispatches and are - * waiting to have their dispatches executed. - */ + return event; + } +}; - var eventQueue = null; - /** - * Dispatches an event and releases it back into the pool, unless persistent. - * - * @param {?object} event Synthetic event to be dispatched. - * @private - */ +var ReactNativeEventPluginOrder = ['ResponderEventPlugin', 'ReactNativeBridgeEventPlugin']; - function executeDispatchesAndRelease(event) { - if (event) { - executeDispatchesInOrder(event); +/** + * Make sure essential globals are available and are patched correctly. Please don't remove this + * line. Bundles created by react-packager `require` it before executing any application code. This + * ensures it exists in the dependency graph and can be `require`d. + * TODO: require this in packager, not in React #10932517 + */ +/** + * Inject module for resolving DOM hierarchy and plugin ordering. + */ - if (!event.isPersistent()) { - event.constructor.release(event); - } - } - } // $FlowFixMe[missing-local-annot] +injectEventPluginOrder(ReactNativeEventPluginOrder); +/** + * Some important event plugins included by default (without having to require + * them). + */ - function executeDispatchesAndReleaseTopLevel(e) { - return executeDispatchesAndRelease(e); - } +injectEventPluginsByName({ + ResponderEventPlugin: ResponderEventPlugin, + ReactNativeBridgeEventPlugin: ReactNativeBridgeEventPlugin +}); - function runEventsInBatch(events) { - if (events !== null) { - eventQueue = accumulateInto(eventQueue, events); - } // Set `eventQueue` to null before processing it so that we can tell if more - // events get enqueued while processing. +var instanceCache = new Map(); +var instanceProps = new Map(); +function precacheFiberNode(hostInst, tag) { + instanceCache.set(tag, hostInst); +} +function uncacheFiberNode(tag) { + instanceCache.delete(tag); + instanceProps.delete(tag); +} - var processingEventQueue = eventQueue; - eventQueue = null; +function getInstanceFromTag(tag) { + return instanceCache.get(tag) || null; +} - if (!processingEventQueue) { - return; - } +function getTagFromInstance(inst) { + var nativeInstance = inst.stateNode; + var tag = nativeInstance._nativeTag; - forEachAccumulated( - processingEventQueue, - executeDispatchesAndReleaseTopLevel - ); + if (tag === undefined && nativeInstance.canonical != null) { + // For compatibility with Fabric + tag = nativeInstance.canonical.nativeTag; + nativeInstance = nativeInstance.canonical.publicInstance; + } - if (eventQueue) { - throw new Error( - "processEventQueue(): Additional events were enqueued while processing " + - "an event queue. Support for this has not yet been implemented." - ); - } // This would be a good time to rethrow if any of the event handlers threw. + if (!tag) { + throw new Error('All native instances should have a tag.'); + } - rethrowCaughtError(); - } + return nativeInstance; +} +function getFiberCurrentPropsFromNode(stateNode) { + return instanceProps.get(stateNode._nativeTag) || null; +} +function updateFiberProps(tag, props) { + instanceProps.set(tag, props); +} - /** - * Version of `ReactBrowserEventEmitter` that works on the receiving side of a - * serialized worker boundary. - */ - // Shared default empty native event - conserve memory. +// Used as a way to call batchedUpdates when we don't have a reference to +// the renderer. Such as when we're dispatching events or if third party +// libraries need to call batchedUpdates. Eventually, this API will go away when +// everything is batched by default. We'll then have a similar API to opt-out of +// scheduled work and instead do synchronous work. +// Defaults +var batchedUpdatesImpl = function (fn, bookkeeping) { + return fn(bookkeeping); +}; + +var isInsideEventHandler = false; +function batchedUpdates$1(fn, bookkeeping) { + if (isInsideEventHandler) { + // If we are currently inside another batch, we need to wait until it + // fully completes before restoring state. + return fn(bookkeeping); + } + + isInsideEventHandler = true; + + try { + return batchedUpdatesImpl(fn, bookkeeping); + } finally { + isInsideEventHandler = false; + } +} +function setBatchingImplementation(_batchedUpdatesImpl, _discreteUpdatesImpl) { + batchedUpdatesImpl = _batchedUpdatesImpl; +} - var EMPTY_NATIVE_EVENT = {}; - /** - * Selects a subsequence of `Touch`es, without destroying `touches`. - * - * @param {Array} touches Deserialized touch objects. - * @param {Array} indices Indices by which to pull subsequence. - * @return {Array} Subsequence of touch objects. - */ - // $FlowFixMe[missing-local-annot] +/** + * Internal queue of events that have accumulated their dispatches and are + * waiting to have their dispatches executed. + */ - function touchSubsequence(touches, indices) { - var ret = []; +var eventQueue = null; +/** + * Dispatches an event and releases it back into the pool, unless persistent. + * + * @param {?object} event Synthetic event to be dispatched. + * @private + */ - for (var i = 0; i < indices.length; i++) { - ret.push(touches[indices[i]]); - } +function executeDispatchesAndRelease(event) { + if (event) { + executeDispatchesInOrder(event); - return ret; + if (!event.isPersistent()) { + event.constructor.release(event); } - /** - * TODO: Pool all of this. - * - * Destroys `touches` by removing touch objects at indices `indices`. This is - * to maintain compatibility with W3C touch "end" events, where the active - * touches don't include the set that has just been "ended". - * - * @param {Array} touches Deserialized touch objects. - * @param {Array} indices Indices to remove from `touches`. - * @return {Array} Subsequence of removed touch objects. - */ + } +} // $FlowFixMe[missing-local-annot] - function removeTouchesAtIndices(touches, indices) { - var rippedOut = []; // use an unsafe downcast to alias to nullable elements, - // so we can delete and then compact. - var temp = touches; +function executeDispatchesAndReleaseTopLevel(e) { + return executeDispatchesAndRelease(e); +} - for (var i = 0; i < indices.length; i++) { - var index = indices[i]; - rippedOut.push(touches[index]); - temp[index] = null; - } +function runEventsInBatch(events) { + if (events !== null) { + eventQueue = accumulateInto(eventQueue, events); + } // Set `eventQueue` to null before processing it so that we can tell if more + // events get enqueued while processing. - var fillAt = 0; - for (var j = 0; j < temp.length; j++) { - var cur = temp[j]; + var processingEventQueue = eventQueue; + eventQueue = null; - if (cur !== null) { - temp[fillAt++] = cur; - } - } + if (!processingEventQueue) { + return; + } - temp.length = fillAt; - return rippedOut; - } - /** - * Internal version of `receiveEvent` in terms of normalized (non-tag) - * `rootNodeID`. - * - * @see receiveEvent. - * - * @param {rootNodeID} rootNodeID React root node ID that event occurred on. - * @param {TopLevelType} topLevelType Top level type of event. - * @param {?object} nativeEventParam Object passed from native. - */ + forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel); - function _receiveRootNodeIDEvent( - rootNodeID, - topLevelType, - nativeEventParam - ) { - var nativeEvent = nativeEventParam || EMPTY_NATIVE_EVENT; - var inst = getInstanceFromTag(rootNodeID); - var target = null; - - if (inst != null) { - target = inst.stateNode; - } - - batchedUpdates$1(function () { - runExtractedPluginEventsInBatch( - topLevelType, - inst, - nativeEvent, - target - ); - }); // React Native doesn't use ReactControlledComponent but if it did, here's - // where it would do it. - } - /** - * Allows registered plugins an opportunity to extract events from top-level - * native browser events. - * - * @return {*} An accumulation of synthetic events. - * @internal - */ + if (eventQueue) { + throw new Error('processEventQueue(): Additional events were enqueued while processing ' + 'an event queue. Support for this has not yet been implemented.'); + } // This would be a good time to rethrow if any of the event handlers threw. - function extractPluginEvents( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - var events = null; - var legacyPlugins = plugins; - - for (var i = 0; i < legacyPlugins.length; i++) { - // Not every plugin in the ordering may be loaded at runtime. - var possiblePlugin = legacyPlugins[i]; - - if (possiblePlugin) { - var extractedEvents = possiblePlugin.extractEvents( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ); - - if (extractedEvents) { - events = accumulateInto(events, extractedEvents); - } - } - } - return events; - } + rethrowCaughtError(); +} - function runExtractedPluginEventsInBatch( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ) { - var events = extractPluginEvents( - topLevelType, - targetInst, - nativeEvent, - nativeEventTarget - ); - runEventsInBatch(events); - } - /** - * Publicly exposed method on module for native objc to invoke when a top - * level event is extracted. - * @param {rootNodeID} rootNodeID React root node ID that event occurred on. - * @param {TopLevelType} topLevelType Top level type of event. - * @param {object} nativeEventParam Object passed from native. - */ +/** + * Version of `ReactBrowserEventEmitter` that works on the receiving side of a + * serialized worker boundary. + */ +// Shared default empty native event - conserve memory. - function receiveEvent(rootNodeID, topLevelType, nativeEventParam) { - _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam); - } - /** - * Simple multi-wrapper around `receiveEvent` that is intended to receive an - * efficient representation of `Touch` objects, and other information that - * can be used to construct W3C compliant `Event` and `Touch` lists. - * - * This may create dispatch behavior that differs than web touch handling. We - * loop through each of the changed touches and receive it as a single event. - * So two `touchStart`/`touchMove`s that occur simultaneously are received as - * two separate touch event dispatches - when they arguably should be one. - * - * This implementation reuses the `Touch` objects themselves as the `Event`s - * since we dispatch an event for each touch (though that might not be spec - * compliant). The main purpose of reusing them is to save allocations. - * - * TODO: Dispatch multiple changed touches in one event. The bubble path - * could be the first common ancestor of all the `changedTouches`. - * - * One difference between this behavior and W3C spec: cancelled touches will - * not appear in `.touches`, or in any future `.touches`, though they may - * still be "actively touching the surface". - * - * Web desktop polyfills only need to construct a fake touch event with - * identifier 0, also abandoning traditional click handlers. - */ +var EMPTY_NATIVE_EVENT = {}; +/** + * Selects a subsequence of `Touch`es, without destroying `touches`. + * + * @param {Array} touches Deserialized touch objects. + * @param {Array} indices Indices by which to pull subsequence. + * @return {Array} Subsequence of touch objects. + */ +// $FlowFixMe[missing-local-annot] - function receiveTouches(eventTopLevelType, touches, changedIndices) { - var changedTouches = - eventTopLevelType === "topTouchEnd" || - eventTopLevelType === "topTouchCancel" - ? removeTouchesAtIndices(touches, changedIndices) - : touchSubsequence(touches, changedIndices); - - for (var jj = 0; jj < changedTouches.length; jj++) { - var touch = changedTouches[jj]; // Touch objects can fulfill the role of `DOM` `Event` objects if we set - // the `changedTouches`/`touches`. This saves allocations. - - touch.changedTouches = changedTouches; - touch.touches = touches; - var nativeEvent = touch; - var rootNodeID = null; - var target = nativeEvent.target; - - if (target !== null && target !== undefined) { - if (target < 1) { - { - error("A view is reporting that a touch occurred on tag zero."); - } - } else { - rootNodeID = target; - } - } // $FlowFixMe[incompatible-call] Shouldn't we *not* call it if rootNodeID is null? +function touchSubsequence(touches, indices) { + var ret = []; - _receiveRootNodeIDEvent(rootNodeID, eventTopLevelType, nativeEvent); - } - } + for (var i = 0; i < indices.length; i++) { + ret.push(touches[indices[i]]); + } - // Module provided by RN: - var ReactNativeGlobalResponderHandler = { - onChange: function (from, to, blockNativeResponder) { - if (to !== null) { - var tag = to.stateNode._nativeTag; - ReactNativePrivateInterface.UIManager.setJSResponder( - tag, - blockNativeResponder - ); - } else { - ReactNativePrivateInterface.UIManager.clearJSResponder(); - } - } - }; + return ret; +} +/** + * TODO: Pool all of this. + * + * Destroys `touches` by removing touch objects at indices `indices`. This is + * to maintain compatibility with W3C touch "end" events, where the active + * touches don't include the set that has just been "ended". + * + * @param {Array} touches Deserialized touch objects. + * @param {Array} indices Indices to remove from `touches`. + * @return {Array} Subsequence of removed touch objects. + */ - /** - * Register the event emitter with the native bridge - */ - ReactNativePrivateInterface.RCTEventEmitter.register({ - receiveEvent: receiveEvent, - receiveTouches: receiveTouches - }); - setComponentTree( - getFiberCurrentPropsFromNode, - getInstanceFromTag, - getTagFromInstance - ); - ResponderEventPlugin.injection.injectGlobalResponderHandler( - ReactNativeGlobalResponderHandler - ); +function removeTouchesAtIndices(touches, indices) { + var rippedOut = []; // use an unsafe downcast to alias to nullable elements, + // so we can delete and then compact. - var LegacyRoot = 0; - var ConcurrentRoot = 1; + var temp = touches; - /** - * `ReactInstanceMap` maintains a mapping from a public facing stateful - * instance (key) and the internal representation (value). This allows public - * methods to accept the user facing instance as an argument and map them back - * to internal methods. - * - * Note that this module is currently shared and assumed to be stateless. - * If this becomes an actual Map, that will break. - */ - function get(key) { - return key._reactInternals; - } - function set(key, value) { - key._reactInternals = value; - } - - // Re-export dynamic flags from the internal module. - var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on - // the exports object every time a flag is read. - - var alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries, - consoleManagedByDevToolsDuringStrictMode = - dynamicFlags.consoleManagedByDevToolsDuringStrictMode, - enableAsyncActions = dynamicFlags.enableAsyncActions, - enableEarlyReturnForPropDiffing = - dynamicFlags.enableEarlyReturnForPropDiffing, - enableComponentStackLocations = - dynamicFlags.enableComponentStackLocations, - enableDeferRootSchedulingToMicrotask = - dynamicFlags.enableDeferRootSchedulingToMicrotask, - enableInfiniteRenderLoopDetection = - dynamicFlags.enableInfiniteRenderLoopDetection, - enableRenderableContext = dynamicFlags.enableRenderableContext, - enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane, - useModernStrictMode = dynamicFlags.useModernStrictMode, - disableDefaultPropsExceptForClasses = - dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. - var enableSchedulingProfiler = true; - var enableProfilerTimer = true; - var enableProfilerCommitHooks = true; - var enableProfilerNestedUpdatePhase = true; - var syncLaneExpirationMs = 250; - var transitionLaneExpirationMs = 5000; - var enableLazyContextPropagation = false; - var enableLegacyHidden = false; - var disableLegacyMode = false; - - // ATTENTION - // When adding new symbols to this file, - // Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' - // The Symbol used to tag the ReactElement-like types. - var REACT_ELEMENT_TYPE = Symbol.for("react.element"); - var REACT_PORTAL_TYPE = Symbol.for("react.portal"); - var REACT_FRAGMENT_TYPE = Symbol.for("react.fragment"); - var REACT_STRICT_MODE_TYPE = Symbol.for("react.strict_mode"); - var REACT_PROFILER_TYPE = Symbol.for("react.profiler"); - var REACT_PROVIDER_TYPE = Symbol.for("react.provider"); // TODO: Delete with enableRenderableContext - - var REACT_CONSUMER_TYPE = Symbol.for("react.consumer"); - var REACT_CONTEXT_TYPE = Symbol.for("react.context"); - var REACT_FORWARD_REF_TYPE = Symbol.for("react.forward_ref"); - var REACT_SUSPENSE_TYPE = Symbol.for("react.suspense"); - var REACT_SUSPENSE_LIST_TYPE = Symbol.for("react.suspense_list"); - var REACT_MEMO_TYPE = Symbol.for("react.memo"); - var REACT_LAZY_TYPE = Symbol.for("react.lazy"); - var REACT_SCOPE_TYPE = Symbol.for("react.scope"); - var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for("react.debug_trace_mode"); - var REACT_OFFSCREEN_TYPE = Symbol.for("react.offscreen"); - var REACT_LEGACY_HIDDEN_TYPE = Symbol.for("react.legacy_hidden"); - var REACT_TRACING_MARKER_TYPE = Symbol.for("react.tracing_marker"); - var REACT_MEMO_CACHE_SENTINEL = Symbol.for("react.memo_cache_sentinel"); - var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; - var FAUX_ITERATOR_SYMBOL = "@@iterator"; - function getIteratorFn(maybeIterable) { - if (maybeIterable === null || typeof maybeIterable !== "object") { - return null; - } + for (var i = 0; i < indices.length; i++) { + var index = indices[i]; + rippedOut.push(touches[index]); + temp[index] = null; + } - var maybeIterator = - (MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL]) || - maybeIterable[FAUX_ITERATOR_SYMBOL]; + var fillAt = 0; - if (typeof maybeIterator === "function") { - return maybeIterator; - } + for (var j = 0; j < temp.length; j++) { + var cur = temp[j]; - return null; + if (cur !== null) { + temp[fillAt++] = cur; } + } - function getWrappedName$1(outerType, innerType, wrapperName) { - var displayName = outerType.displayName; + temp.length = fillAt; + return rippedOut; +} +/** + * Internal version of `receiveEvent` in terms of normalized (non-tag) + * `rootNodeID`. + * + * @see receiveEvent. + * + * @param {rootNodeID} rootNodeID React root node ID that event occurred on. + * @param {TopLevelType} topLevelType Top level type of event. + * @param {?object} nativeEventParam Object passed from native. + */ - if (displayName) { - return displayName; - } - var functionName = innerType.displayName || innerType.name || ""; - return functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName; - } // Keep in sync with react-reconciler/getComponentNameFromFiber +function _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam) { + var nativeEvent = nativeEventParam || EMPTY_NATIVE_EVENT; + var inst = getInstanceFromTag(rootNodeID); + var target = null; - function getContextName$1(type) { - return type.displayName || "Context"; - } + if (inst != null) { + target = inst.stateNode; + } - var REACT_CLIENT_REFERENCE = Symbol.for("react.client.reference"); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. + batchedUpdates$1(function () { + runExtractedPluginEventsInBatch(topLevelType, inst, nativeEvent, target); + }); // React Native doesn't use ReactControlledComponent but if it did, here's + // where it would do it. +} +/** + * Allows registered plugins an opportunity to extract events from top-level + * native browser events. + * + * @return {*} An accumulation of synthetic events. + * @internal + */ - function getComponentNameFromType(type) { - if (type == null) { - // Host root, text node or just invalid type. - return null; - } - if (typeof type === "function") { - if (type.$$typeof === REACT_CLIENT_REFERENCE) { - // TODO: Create a convention for naming client references with debug info. - return null; - } +function extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var events = null; + var legacyPlugins = plugins; - return type.displayName || type.name || null; - } + for (var i = 0; i < legacyPlugins.length; i++) { + // Not every plugin in the ordering may be loaded at runtime. + var possiblePlugin = legacyPlugins[i]; - if (typeof type === "string") { - return type; + if (possiblePlugin) { + var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget); + + if (extractedEvents) { + events = accumulateInto(events, extractedEvents); } + } + } - switch (type) { - case REACT_FRAGMENT_TYPE: - return "Fragment"; + return events; +} + +function runExtractedPluginEventsInBatch(topLevelType, targetInst, nativeEvent, nativeEventTarget) { + var events = extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget); + runEventsInBatch(events); +} +/** + * Publicly exposed method on module for native objc to invoke when a top + * level event is extracted. + * @param {rootNodeID} rootNodeID React root node ID that event occurred on. + * @param {TopLevelType} topLevelType Top level type of event. + * @param {object} nativeEventParam Object passed from native. + */ - case REACT_PORTAL_TYPE: - return "Portal"; - case REACT_PROFILER_TYPE: - return "Profiler"; +function receiveEvent(rootNodeID, topLevelType, nativeEventParam) { + _receiveRootNodeIDEvent(rootNodeID, topLevelType, nativeEventParam); +} +/** + * Simple multi-wrapper around `receiveEvent` that is intended to receive an + * efficient representation of `Touch` objects, and other information that + * can be used to construct W3C compliant `Event` and `Touch` lists. + * + * This may create dispatch behavior that differs than web touch handling. We + * loop through each of the changed touches and receive it as a single event. + * So two `touchStart`/`touchMove`s that occur simultaneously are received as + * two separate touch event dispatches - when they arguably should be one. + * + * This implementation reuses the `Touch` objects themselves as the `Event`s + * since we dispatch an event for each touch (though that might not be spec + * compliant). The main purpose of reusing them is to save allocations. + * + * TODO: Dispatch multiple changed touches in one event. The bubble path + * could be the first common ancestor of all the `changedTouches`. + * + * One difference between this behavior and W3C spec: cancelled touches will + * not appear in `.touches`, or in any future `.touches`, though they may + * still be "actively touching the surface". + * + * Web desktop polyfills only need to construct a fake touch event with + * identifier 0, also abandoning traditional click handlers. + */ - case REACT_STRICT_MODE_TYPE: - return "StrictMode"; +function receiveTouches(eventTopLevelType, touches, changedIndices) { + var changedTouches = eventTopLevelType === 'topTouchEnd' || eventTopLevelType === 'topTouchCancel' ? removeTouchesAtIndices(touches, changedIndices) : touchSubsequence(touches, changedIndices); - case REACT_SUSPENSE_TYPE: - return "Suspense"; + for (var jj = 0; jj < changedTouches.length; jj++) { + var touch = changedTouches[jj]; // Touch objects can fulfill the role of `DOM` `Event` objects if we set + // the `changedTouches`/`touches`. This saves allocations. - case REACT_SUSPENSE_LIST_TYPE: - return "SuspenseList"; - } + touch.changedTouches = changedTouches; + touch.touches = touches; + var nativeEvent = touch; + var rootNodeID = null; + var target = nativeEvent.target; - if (typeof type === "object") { + if (target !== null && target !== undefined) { + if (target < 1) { { - if (typeof type.tag === "number") { - error( - "Received an unexpected object in getComponentNameFromType(). " + - "This is likely a bug in React. Please file an issue." - ); - } + error('A view is reporting that a touch occurred on tag zero.'); } + } else { + rootNodeID = target; + } + } // $FlowFixMe[incompatible-call] Shouldn't we *not* call it if rootNodeID is null? - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: - if (enableRenderableContext) { - return null; - } else { - var provider = type; - return getContextName$1(provider._context) + ".Provider"; - } - case REACT_CONTEXT_TYPE: - var context = type; + _receiveRootNodeIDEvent(rootNodeID, eventTopLevelType, nativeEvent); + } +} - if (enableRenderableContext) { - return getContextName$1(context) + ".Provider"; - } else { - return getContextName$1(context) + ".Consumer"; - } +// Module provided by RN: +var ReactNativeGlobalResponderHandler = { + onChange: function (from, to, blockNativeResponder) { + if (to !== null) { + var tag = to.stateNode._nativeTag; + ReactNativePrivateInterface.UIManager.setJSResponder(tag, blockNativeResponder); + } else { + ReactNativePrivateInterface.UIManager.clearJSResponder(); + } + } +}; - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - var consumer = type; - return getContextName$1(consumer._context) + ".Consumer"; - } else { - return null; - } +/** + * Register the event emitter with the native bridge + */ - case REACT_FORWARD_REF_TYPE: - return getWrappedName$1(type, type.render, "ForwardRef"); +ReactNativePrivateInterface.RCTEventEmitter.register({ + receiveEvent: receiveEvent, + receiveTouches: receiveTouches +}); +setComponentTree(getFiberCurrentPropsFromNode, getInstanceFromTag, getTagFromInstance); +ResponderEventPlugin.injection.injectGlobalResponderHandler(ReactNativeGlobalResponderHandler); - case REACT_MEMO_TYPE: - var outerName = type.displayName || null; +var LegacyRoot = 0; +var ConcurrentRoot = 1; - if (outerName !== null) { - return outerName; - } +/** + * `ReactInstanceMap` maintains a mapping from a public facing stateful + * instance (key) and the internal representation (value). This allows public + * methods to accept the user facing instance as an argument and map them back + * to internal methods. + * + * Note that this module is currently shared and assumed to be stateless. + * If this becomes an actual Map, that will break. + */ +function get(key) { + return key._reactInternals; +} +function set(key, value) { + key._reactInternals = value; +} - return getComponentNameFromType(type.type) || "Memo"; +// Re-export dynamic flags from the internal module. +var dynamicFlags = dynamicFlagsUntyped; // We destructure each value before re-exporting to avoid a dynamic look-up on +// the exports object every time a flag is read. + +var alwaysThrottleRetries = dynamicFlags.alwaysThrottleRetries, + consoleManagedByDevToolsDuringStrictMode = dynamicFlags.consoleManagedByDevToolsDuringStrictMode, + enableAsyncActions = dynamicFlags.enableAsyncActions, + enableEarlyReturnForPropDiffing = dynamicFlags.enableEarlyReturnForPropDiffing, + enableComponentStackLocations = dynamicFlags.enableComponentStackLocations, + enableDeferRootSchedulingToMicrotask = dynamicFlags.enableDeferRootSchedulingToMicrotask, + enableInfiniteRenderLoopDetection = dynamicFlags.enableInfiniteRenderLoopDetection, + enableRenderableContext = dynamicFlags.enableRenderableContext, + enableUnifiedSyncLane = dynamicFlags.enableUnifiedSyncLane, + useModernStrictMode = dynamicFlags.useModernStrictMode, + disableDefaultPropsExceptForClasses = dynamicFlags.disableDefaultPropsExceptForClasses; // The rest of the flags are static for better dead code elimination. +var enableSchedulingProfiler = true; +var enableProfilerTimer = true; +var enableProfilerCommitHooks = true; +var enableProfilerNestedUpdatePhase = true; +var syncLaneExpirationMs = 250; +var transitionLaneExpirationMs = 5000; +var enableLazyContextPropagation = false; +var enableLegacyHidden = false; +var disableLegacyMode = false; + +// ATTENTION +// When adding new symbols to this file, +// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols' +// The Symbol used to tag the ReactElement-like types. +var REACT_ELEMENT_TYPE = Symbol.for('react.element'); +var REACT_PORTAL_TYPE = Symbol.for('react.portal'); +var REACT_FRAGMENT_TYPE = Symbol.for('react.fragment'); +var REACT_STRICT_MODE_TYPE = Symbol.for('react.strict_mode'); +var REACT_PROFILER_TYPE = Symbol.for('react.profiler'); +var REACT_PROVIDER_TYPE = Symbol.for('react.provider'); // TODO: Delete with enableRenderableContext + +var REACT_CONSUMER_TYPE = Symbol.for('react.consumer'); +var REACT_CONTEXT_TYPE = Symbol.for('react.context'); +var REACT_FORWARD_REF_TYPE = Symbol.for('react.forward_ref'); +var REACT_SUSPENSE_TYPE = Symbol.for('react.suspense'); +var REACT_SUSPENSE_LIST_TYPE = Symbol.for('react.suspense_list'); +var REACT_MEMO_TYPE = Symbol.for('react.memo'); +var REACT_LAZY_TYPE = Symbol.for('react.lazy'); +var REACT_SCOPE_TYPE = Symbol.for('react.scope'); +var REACT_DEBUG_TRACING_MODE_TYPE = Symbol.for('react.debug_trace_mode'); +var REACT_OFFSCREEN_TYPE = Symbol.for('react.offscreen'); +var REACT_LEGACY_HIDDEN_TYPE = Symbol.for('react.legacy_hidden'); +var REACT_TRACING_MARKER_TYPE = Symbol.for('react.tracing_marker'); +var REACT_MEMO_CACHE_SENTINEL = Symbol.for('react.memo_cache_sentinel'); +var MAYBE_ITERATOR_SYMBOL = Symbol.iterator; +var FAUX_ITERATOR_SYMBOL = '@@iterator'; +function getIteratorFn(maybeIterable) { + if (maybeIterable === null || typeof maybeIterable !== 'object') { + return null; + } + + var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]; + + if (typeof maybeIterator === 'function') { + return maybeIterator; + } + + return null; +} - case REACT_LAZY_TYPE: { - var lazyComponent = type; - var payload = lazyComponent._payload; - var init = lazyComponent._init; +function getWrappedName$1(outerType, innerType, wrapperName) { + var displayName = outerType.displayName; - try { - return getComponentNameFromType(init(payload)); - } catch (x) { - return null; - } - } - } - } + if (displayName) { + return displayName; + } - return null; - } + var functionName = innerType.displayName || innerType.name || ''; + return functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName; +} // Keep in sync with react-reconciler/getComponentNameFromFiber - function getWrappedName(outerType, innerType, wrapperName) { - var functionName = innerType.displayName || innerType.name || ""; - return ( - outerType.displayName || - (functionName !== "" - ? wrapperName + "(" + functionName + ")" - : wrapperName) - ); - } // Keep in sync with shared/getComponentNameFromType - function getContextName(type) { - return type.displayName || "Context"; - } +function getContextName$1(type) { + return type.displayName || 'Context'; +} - function getComponentNameFromOwner(owner) { - if (typeof owner.tag === "number") { - return getComponentNameFromFiber(owner); - } +var REACT_CLIENT_REFERENCE = Symbol.for('react.client.reference'); // Note that the reconciler package should generally prefer to use getComponentNameFromFiber() instead. - if (typeof owner.name === "string") { - return owner.name; - } +function getComponentNameFromType(type) { + if (type == null) { + // Host root, text node or just invalid type. + return null; + } + if (typeof type === 'function') { + if (type.$$typeof === REACT_CLIENT_REFERENCE) { + // TODO: Create a convention for naming client references with debug info. return null; } - function getComponentNameFromFiber(fiber) { - var tag = fiber.tag, - type = fiber.type; - - switch (tag) { - case CacheComponent: - return "Cache"; - - case ContextConsumer: - if (enableRenderableContext) { - var consumer = type; - return getContextName(consumer._context) + ".Consumer"; - } else { - var context = type; - return getContextName(context) + ".Consumer"; - } - - case ContextProvider: - if (enableRenderableContext) { - var _context = type; - return getContextName(_context) + ".Provider"; - } else { - var provider = type; - return getContextName(provider._context) + ".Provider"; - } - case DehydratedFragment: - return "DehydratedFragment"; + return type.displayName || type.name || null; + } - case ForwardRef: - return getWrappedName(type, type.render, "ForwardRef"); + if (typeof type === 'string') { + return type; + } - case Fragment: - return "Fragment"; + switch (type) { + case REACT_FRAGMENT_TYPE: + return 'Fragment'; - case HostHoistable: - case HostSingleton: - case HostComponent: - // Host component type is the display name (e.g. "div", "View") - return type; + case REACT_PORTAL_TYPE: + return 'Portal'; - case HostPortal: - return "Portal"; + case REACT_PROFILER_TYPE: + return 'Profiler'; - case HostRoot: - return "Root"; + case REACT_STRICT_MODE_TYPE: + return 'StrictMode'; - case HostText: - return "Text"; + case REACT_SUSPENSE_TYPE: + return 'Suspense'; - case LazyComponent: - // Name comes from the type in this case; we don't have a tag. - return getComponentNameFromType(type); + case REACT_SUSPENSE_LIST_TYPE: + return 'SuspenseList'; - case Mode: - if (type === REACT_STRICT_MODE_TYPE) { - // Don't be less specific than shared/getComponentNameFromType - return "StrictMode"; - } + } - return "Mode"; + if (typeof type === 'object') { + { + if (typeof type.tag === 'number') { + error('Received an unexpected object in getComponentNameFromType(). ' + 'This is likely a bug in React. Please file an issue.'); + } + } - case OffscreenComponent: - return "Offscreen"; + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + if (enableRenderableContext) { + return null; + } else { + var provider = type; + return getContextName$1(provider._context) + '.Provider'; + } - case Profiler: - return "Profiler"; + case REACT_CONTEXT_TYPE: + var context = type; - case ScopeComponent: - return "Scope"; + if (enableRenderableContext) { + return getContextName$1(context) + '.Provider'; + } else { + return getContextName$1(context) + '.Consumer'; + } - case SuspenseComponent: - return "Suspense"; + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + var consumer = type; + return getContextName$1(consumer._context) + '.Consumer'; + } else { + return null; + } - case SuspenseListComponent: - return "SuspenseList"; + case REACT_FORWARD_REF_TYPE: + return getWrappedName$1(type, type.render, 'ForwardRef'); - case TracingMarkerComponent: - return "TracingMarker"; - // The display name for these tags come from the user-provided type: + case REACT_MEMO_TYPE: + var outerName = type.displayName || null; - case IncompleteClassComponent: - case IncompleteFunctionComponent: + if (outerName !== null) { + return outerName; + } - // Fallthrough + return getComponentNameFromType(type.type) || 'Memo'; - case ClassComponent: - case FunctionComponent: - case MemoComponent: - case SimpleMemoComponent: - if (typeof type === "function") { - return type.displayName || type.name || null; - } + case REACT_LAZY_TYPE: + { + var lazyComponent = type; + var payload = lazyComponent._payload; + var init = lazyComponent._init; - if (typeof type === "string") { - return type; + try { + return getComponentNameFromType(init(payload)); + } catch (x) { + return null; } - - break; - } - - return null; + } } + } - var NoFlags$1 = - /* */ - 0; - var PerformedWork = - /* */ - 1; - var Placement = - /* */ - 2; - var DidCapture = - /* */ - 128; - var Hydrating = - /* */ - 4096; // You can change the rest (and add more). - - var Update = - /* */ - 4; - /* Skipped value: 0b0000000000000000000000001000; */ - - var ChildDeletion = - /* */ - 16; - var ContentReset = - /* */ - 32; - var Callback = - /* */ - 64; - /* Used by DidCapture: 0b0000000000000000000010000000; */ - - var ForceClientRender = - /* */ - 256; - var Ref = - /* */ - 512; - var Snapshot = - /* */ - 1024; - var Passive$1 = - /* */ - 2048; - /* Used by Hydrating: 0b0000000000000001000000000000; */ - - var Visibility = - /* */ - 8192; - var StoreConsistency = - /* */ - 16384; // It's OK to reuse these bits because these flags are mutually exclusive for - // different fiber types. We should really be doing this for as many flags as - // possible, because we're about to run out of bits. - - var ScheduleRetry = StoreConsistency; - var ShouldSuspendCommit = Visibility; - var DidDefer = ContentReset; - var FormReset = Snapshot; - var LifecycleEffectMask = - Passive$1 | Update | Callback | Ref | Snapshot | StoreConsistency; // Union of all commit flags (flags with the lifetime of a particular commit) - - var HostEffectMask = - /* */ - 32767; // These are not really side effects, but we still reuse this field. - - var Incomplete = - /* */ - 32768; - var ShouldCapture = - /* */ - 65536; - var ForceUpdateForLegacySuspense = - /* */ - 131072; - var Forked = - /* */ - 1048576; // Static tags describe aspects of a fiber that are not specific to a render, - // e.g. a fiber uses a passive effect (even if there are no updates on this particular render). - // This enables us to defer more work in the unmount case, - // since we can defer traversing the tree during layout to look for Passive effects, - // and instead rely on the static flag as a signal that there may be cleanup work. - - var RefStatic = - /* */ - 2097152; - var LayoutStatic = - /* */ - 4194304; - var PassiveStatic = - /* */ - 8388608; - var MaySuspendCommit = - /* */ - 16777216; // Flag used to identify newly inserted fibers. It isn't reset after commit unlike `Placement`. - - var PlacementDEV = - /* */ - 33554432; - var MountLayoutDev = - /* */ - 67108864; - var MountPassiveDev = - /* */ - 134217728; // Groups of flags that are used in the commit phase to skip over trees that - // don't contain effects, by checking subtreeFlags. - - var BeforeMutationMask = // TODO: Remove Update flag from before mutation phase by re-landing Visibility - // flag logic (see #20043) - Update | Snapshot | 0; - var MutationMask = - Placement | - Update | - ChildDeletion | - ContentReset | - Ref | - Hydrating | - Visibility | - FormReset; - var LayoutMask = Update | Callback | Ref | Visibility; // TODO: Split into PassiveMountMask and PassiveUnmountMask - - var PassiveMask = Passive$1 | Visibility | ChildDeletion; // Union of tags that don't get reset on clones. - // This allows certain concepts to persist without recalculating them, - // e.g. whether a subtree contains passive effects or portals. - - var StaticMask = - LayoutStatic | PassiveStatic | RefStatic | MaySuspendCommit; - - function getNearestMountedFiber(fiber) { - var node = fiber; - var nearestMounted = fiber; - - if (!fiber.alternate) { - // If there is no alternate, this might be a new tree that isn't inserted - // yet. If it is, then it will have a pending insertion effect on it. - var nextNode = node; + return null; +} - do { - node = nextNode; +function getWrappedName(outerType, innerType, wrapperName) { + var functionName = innerType.displayName || innerType.name || ''; + return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName); +} // Keep in sync with shared/getComponentNameFromType - if ((node.flags & (Placement | Hydrating)) !== NoFlags$1) { - // This is an insertion or in-progress hydration. The nearest possible - // mounted fiber is the parent but we need to continue to figure out - // if that one is still mounted. - nearestMounted = node.return; - } // $FlowFixMe[incompatible-type] we bail out when we get a null - nextNode = node.return; - } while (nextNode); - } else { - while (node.return) { - node = node.return; - } - } +function getContextName(type) { + return type.displayName || 'Context'; +} - if (node.tag === HostRoot) { - // TODO: Check if this was a nested HostRoot when used with - // renderContainerIntoSubtree. - return nearestMounted; - } // If we didn't hit the root, that means that we're in an disconnected tree - // that has been unmounted. +function getComponentNameFromOwner(owner) { + if (typeof owner.tag === 'number') { + return getComponentNameFromFiber(owner); + } - return null; - } - function isFiberMounted(fiber) { - return getNearestMountedFiber(fiber) === fiber; - } - function isMounted(component) { - { - var owner = ReactSharedInternals.owner; - - if (owner !== null && owner.tag === ClassComponent) { - var ownerFiber = owner; - var instance = ownerFiber.stateNode; - - if (!instance._warnedAboutRefsInRender) { - error( - "%s is accessing isMounted inside its render() function. " + - "render() should be a pure function of props and state. It should " + - "never access something that requires stale data from the previous " + - "render, such as refs. Move this logic to componentDidMount and " + - "componentDidUpdate instead.", - getComponentNameFromFiber(ownerFiber) || "A component" - ); - } + if (typeof owner.name === 'string') { + return owner.name; + } - instance._warnedAboutRefsInRender = true; - } - } + return null; +} +function getComponentNameFromFiber(fiber) { + var tag = fiber.tag, + type = fiber.type; - var fiber = get(component); + switch (tag) { + case CacheComponent: + return 'Cache'; - if (!fiber) { - return false; + case ContextConsumer: + if (enableRenderableContext) { + var consumer = type; + return getContextName(consumer._context) + '.Consumer'; + } else { + var context = type; + return getContextName(context) + '.Consumer'; } - return getNearestMountedFiber(fiber) === fiber; - } - - function assertIsMounted(fiber) { - if (getNearestMountedFiber(fiber) !== fiber) { - throw new Error("Unable to find node on an unmounted component."); + case ContextProvider: + if (enableRenderableContext) { + var _context = type; + return getContextName(_context) + '.Provider'; + } else { + var provider = type; + return getContextName(provider._context) + '.Provider'; } - } - function findCurrentFiberUsingSlowPath(fiber) { - var alternate = fiber.alternate; + case DehydratedFragment: + return 'DehydratedFragment'; - if (!alternate) { - // If there is no alternate, then we only need to check if it is mounted. - var nearestMounted = getNearestMountedFiber(fiber); + case ForwardRef: + return getWrappedName(type, type.render, 'ForwardRef'); - if (nearestMounted === null) { - throw new Error("Unable to find node on an unmounted component."); - } + case Fragment: + return 'Fragment'; - if (nearestMounted !== fiber) { - return null; - } + case HostHoistable: + case HostSingleton: + case HostComponent: + // Host component type is the display name (e.g. "div", "View") + return type; - return fiber; - } // If we have two possible branches, we'll walk backwards up to the root - // to see what path the root points to. On the way we may hit one of the - // special cases and we'll deal with them. + case HostPortal: + return 'Portal'; - var a = fiber; - var b = alternate; + case HostRoot: + return 'Root'; - while (true) { - var parentA = a.return; + case HostText: + return 'Text'; - if (parentA === null) { - // We're at the root. - break; - } + case LazyComponent: + // Name comes from the type in this case; we don't have a tag. + return getComponentNameFromType(type); - var parentB = parentA.alternate; + case Mode: + if (type === REACT_STRICT_MODE_TYPE) { + // Don't be less specific than shared/getComponentNameFromType + return 'StrictMode'; + } - if (parentB === null) { - // There is no alternate. This is an unusual case. Currently, it only - // happens when a Suspense component is hidden. An extra fragment fiber - // is inserted in between the Suspense fiber and its children. Skip - // over this extra fragment fiber and proceed to the next parent. - var nextParent = parentA.return; + return 'Mode'; - if (nextParent !== null) { - a = b = nextParent; - continue; - } // If there's no parent, we're at the root. + case OffscreenComponent: + return 'Offscreen'; - break; - } // If both copies of the parent fiber point to the same child, we can - // assume that the child is current. This happens when we bailout on low - // priority: the bailed out fiber's child reuses the current child. - - if (parentA.child === parentB.child) { - var child = parentA.child; - - while (child) { - if (child === a) { - // We've determined that A is the current branch. - assertIsMounted(parentA); - return fiber; - } + case Profiler: + return 'Profiler'; - if (child === b) { - // We've determined that B is the current branch. - assertIsMounted(parentA); - return alternate; - } + case ScopeComponent: + return 'Scope'; - child = child.sibling; - } // We should never have an alternate for any mounting node. So the only - // way this could possibly happen is if this was unmounted, if at all. + case SuspenseComponent: + return 'Suspense'; - throw new Error("Unable to find node on an unmounted component."); - } + case SuspenseListComponent: + return 'SuspenseList'; - if (a.return !== b.return) { - // The return pointer of A and the return pointer of B point to different - // fibers. We assume that return pointers never criss-cross, so A must - // belong to the child set of A.return, and B must belong to the child - // set of B.return. - a = parentA; - b = parentB; - } else { - // The return pointers point to the same fiber. We'll have to use the - // default, slow path: scan the child sets of each parent alternate to see - // which child belongs to which set. - // - // Search parent A's child set - var didFindChild = false; - var _child = parentA.child; - - while (_child) { - if (_child === a) { - didFindChild = true; - a = parentA; - b = parentB; - break; - } + case TracingMarkerComponent: + return 'TracingMarker'; + // The display name for these tags come from the user-provided type: - if (_child === b) { - didFindChild = true; - b = parentA; - a = parentB; - break; - } + case IncompleteClassComponent: + case IncompleteFunctionComponent: - _child = _child.sibling; - } + // Fallthrough - if (!didFindChild) { - // Search parent B's child set - _child = parentB.child; + case ClassComponent: + case FunctionComponent: + case MemoComponent: + case SimpleMemoComponent: + if (typeof type === 'function') { + return type.displayName || type.name || null; + } - while (_child) { - if (_child === a) { - didFindChild = true; - a = parentB; - b = parentA; - break; - } + if (typeof type === 'string') { + return type; + } - if (_child === b) { - didFindChild = true; - b = parentB; - a = parentA; - break; - } + break; - _child = _child.sibling; - } + } - if (!didFindChild) { - throw new Error( - "Child was not found in either parent set. This indicates a bug " + - "in React related to the return pointer. Please file an issue." - ); - } - } - } + return null; +} - if (a.alternate !== b) { - throw new Error( - "Return fibers should always be each others' alternates. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } // If the root is not a host container, we're in a disconnected tree. I.e. - // unmounted. +var NoFlags$1 = +/* */ +0; +var PerformedWork = +/* */ +1; +var Placement = +/* */ +2; +var DidCapture = +/* */ +128; +var Hydrating = +/* */ +4096; // You can change the rest (and add more). + +var Update = +/* */ +4; +/* Skipped value: 0b0000000000000000000000001000; */ + +var ChildDeletion = +/* */ +16; +var ContentReset = +/* */ +32; +var Callback = +/* */ +64; +/* Used by DidCapture: 0b0000000000000000000010000000; */ + +var ForceClientRender = +/* */ +256; +var Ref = +/* */ +512; +var Snapshot = +/* */ +1024; +var Passive$1 = +/* */ +2048; +/* Used by Hydrating: 0b0000000000000001000000000000; */ + +var Visibility = +/* */ +8192; +var StoreConsistency = +/* */ +16384; // It's OK to reuse these bits because these flags are mutually exclusive for +// different fiber types. We should really be doing this for as many flags as +// possible, because we're about to run out of bits. + +var ScheduleRetry = StoreConsistency; +var ShouldSuspendCommit = Visibility; +var DidDefer = ContentReset; +var FormReset = Snapshot; +var LifecycleEffectMask = Passive$1 | Update | Callback | Ref | Snapshot | StoreConsistency; // Union of all commit flags (flags with the lifetime of a particular commit) + +var HostEffectMask = +/* */ +32767; // These are not really side effects, but we still reuse this field. + +var Incomplete = +/* */ +32768; +var ShouldCapture = +/* */ +65536; +var ForceUpdateForLegacySuspense = +/* */ +131072; +var Forked = +/* */ +1048576; // Static tags describe aspects of a fiber that are not specific to a render, +// e.g. a fiber uses a passive effect (even if there are no updates on this particular render). +// This enables us to defer more work in the unmount case, +// since we can defer traversing the tree during layout to look for Passive effects, +// and instead rely on the static flag as a signal that there may be cleanup work. + +var RefStatic = +/* */ +2097152; +var LayoutStatic = +/* */ +4194304; +var PassiveStatic = +/* */ +8388608; +var MaySuspendCommit = +/* */ +16777216; // Flag used to identify newly inserted fibers. It isn't reset after commit unlike `Placement`. + +var PlacementDEV = +/* */ +33554432; +var MountLayoutDev = +/* */ +67108864; +var MountPassiveDev = +/* */ +134217728; // Groups of flags that are used in the commit phase to skip over trees that +// don't contain effects, by checking subtreeFlags. + +var BeforeMutationMask = // TODO: Remove Update flag from before mutation phase by re-landing Visibility +// flag logic (see #20043) +Update | Snapshot | (0); +var MutationMask = Placement | Update | ChildDeletion | ContentReset | Ref | Hydrating | Visibility | FormReset; +var LayoutMask = Update | Callback | Ref | Visibility; // TODO: Split into PassiveMountMask and PassiveUnmountMask + +var PassiveMask = Passive$1 | Visibility | ChildDeletion; // Union of tags that don't get reset on clones. +// This allows certain concepts to persist without recalculating them, +// e.g. whether a subtree contains passive effects or portals. + +var StaticMask = LayoutStatic | PassiveStatic | RefStatic | MaySuspendCommit; + +function getNearestMountedFiber(fiber) { + var node = fiber; + var nearestMounted = fiber; + + if (!fiber.alternate) { + // If there is no alternate, this might be a new tree that isn't inserted + // yet. If it is, then it will have a pending insertion effect on it. + var nextNode = node; + + do { + node = nextNode; + + if ((node.flags & (Placement | Hydrating)) !== NoFlags$1) { + // This is an insertion or in-progress hydration. The nearest possible + // mounted fiber is the parent but we need to continue to figure out + // if that one is still mounted. + nearestMounted = node.return; + } // $FlowFixMe[incompatible-type] we bail out when we get a null + + + nextNode = node.return; + } while (nextNode); + } else { + while (node.return) { + node = node.return; + } + } + + if (node.tag === HostRoot) { + // TODO: Check if this was a nested HostRoot when used with + // renderContainerIntoSubtree. + return nearestMounted; + } // If we didn't hit the root, that means that we're in an disconnected tree + // that has been unmounted. + + + return null; +} +function isFiberMounted(fiber) { + return getNearestMountedFiber(fiber) === fiber; +} +function isMounted(component) { + { + var owner = ReactSharedInternals.owner; - if (a.tag !== HostRoot) { - throw new Error("Unable to find node on an unmounted component."); - } + if (owner !== null && owner.tag === ClassComponent) { + var ownerFiber = owner; + var instance = ownerFiber.stateNode; - if (a.stateNode.current === a) { - // We've determined that A is the current branch. - return fiber; - } // Otherwise B has to be current branch. + if (!instance._warnedAboutRefsInRender) { + error('%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentNameFromFiber(ownerFiber) || 'A component'); + } - return alternate; - } - function findCurrentHostFiber(parent) { - var currentParent = findCurrentFiberUsingSlowPath(parent); - return currentParent !== null - ? findCurrentHostFiberImpl(currentParent) - : null; + instance._warnedAboutRefsInRender = true; } + } - function findCurrentHostFiberImpl(node) { - // Next we'll drill down this component to find the first HostComponent/Text. - var tag = node.tag; + var fiber = get(component); - if ( - tag === HostComponent || - tag === HostHoistable || - tag === HostSingleton || - tag === HostText - ) { - return node; - } + if (!fiber) { + return false; + } - var child = node.child; + return getNearestMountedFiber(fiber) === fiber; +} - while (child !== null) { - var match = findCurrentHostFiberImpl(child); +function assertIsMounted(fiber) { + if (getNearestMountedFiber(fiber) !== fiber) { + throw new Error('Unable to find node on an unmounted component.'); + } +} - if (match !== null) { - return match; - } +function findCurrentFiberUsingSlowPath(fiber) { + var alternate = fiber.alternate; - child = child.sibling; - } + if (!alternate) { + // If there is no alternate, then we only need to check if it is mounted. + var nearestMounted = getNearestMountedFiber(fiber); + if (nearestMounted === null) { + throw new Error('Unable to find node on an unmounted component.'); + } + + if (nearestMounted !== fiber) { return null; } - function doesFiberContain(parentFiber, childFiber) { - var node = childFiber; - var parentFiberAlternate = parentFiber.alternate; - while (node !== null) { - if (node === parentFiber || node === parentFiberAlternate) { - return true; - } + return fiber; + } // If we have two possible branches, we'll walk backwards up to the root + // to see what path the root points to. On the way we may hit one of the + // special cases and we'll deal with them. - node = node.return; - } - return false; - } + var a = fiber; + var b = alternate; - // Modules provided by RN: - var emptyObject$1 = {}; - /** - * Create a payload that contains all the updates between two sets of props. - * - * These helpers are all encapsulated into a single module, because they use - * mutation as a performance optimization which leads to subtle shared - * dependencies between the code paths. To avoid this mutable state leaking - * across modules, I've kept them isolated to this module. - */ - // Tracks removed keys + while (true) { + var parentA = a.return; - var removedKeys = null; - var removedKeyCount = 0; - var deepDifferOptions = { - unsafelyIgnoreFunctions: true - }; + if (parentA === null) { + // We're at the root. + break; + } - function defaultDiffer(prevProp, nextProp) { - if (typeof nextProp !== "object" || nextProp === null) { - // Scalars have already been checked for equality - return true; - } else { - // For objects and arrays, the default diffing algorithm is a deep compare - return ReactNativePrivateInterface.deepDiffer( - prevProp, - nextProp, - deepDifferOptions - ); - } - } - - function restoreDeletedValuesInNestedArray( - updatePayload, - node, - validAttributes - ) { - if (isArray(node)) { - var i = node.length; - - while (i-- && removedKeyCount > 0) { - restoreDeletedValuesInNestedArray( - updatePayload, - node[i], - validAttributes - ); - } - } else if (node && removedKeyCount > 0) { - var obj = node; - - for (var propKey in removedKeys) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (!removedKeys[propKey]) { - continue; - } + var parentB = parentA.alternate; - var nextProp = obj[propKey]; + if (parentB === null) { + // There is no alternate. This is an unusual case. Currently, it only + // happens when a Suspense component is hidden. An extra fragment fiber + // is inserted in between the Suspense fiber and its children. Skip + // over this extra fragment fiber and proceed to the next parent. + var nextParent = parentA.return; - if (nextProp === undefined) { - continue; - } + if (nextParent !== null) { + a = b = nextParent; + continue; + } // If there's no parent, we're at the root. - var attributeConfig = validAttributes[propKey]; - if (!attributeConfig) { - continue; // not a valid native prop - } + break; + } // If both copies of the parent fiber point to the same child, we can + // assume that the child is current. This happens when we bailout on low + // priority: the bailed out fiber's child reuses the current child. - if (typeof nextProp === "function") { - // $FlowFixMe[incompatible-type] found when upgrading Flow - nextProp = true; - } - if (typeof nextProp === "undefined") { - // $FlowFixMe[incompatible-type] found when upgrading Flow - nextProp = null; - } + if (parentA.child === parentB.child) { + var child = parentA.child; - if (typeof attributeConfig !== "object") { - // case: !Object is the default case - updatePayload[propKey] = nextProp; - } else if ( - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration - var nextValue = - typeof attributeConfig.process === "function" - ? attributeConfig.process(nextProp) - : nextProp; - updatePayload[propKey] = nextValue; - } // $FlowFixMe[incompatible-use] found when upgrading Flow - - removedKeys[propKey] = false; - removedKeyCount--; + while (child) { + if (child === a) { + // We've determined that A is the current branch. + assertIsMounted(parentA); + return fiber; } - } - } - - function diffNestedArrayProperty( - updatePayload, - prevArray, - nextArray, - validAttributes - ) { - var minLength = - prevArray.length < nextArray.length - ? prevArray.length - : nextArray.length; - var i; - - for (i = 0; i < minLength; i++) { - // Diff any items in the array in the forward direction. Repeated keys - // will be overwritten by later values. - updatePayload = diffNestedProperty( - updatePayload, - prevArray[i], - nextArray[i], - validAttributes - ); - } - - for (; i < prevArray.length; i++) { - // Clear out all remaining properties. - updatePayload = clearNestedProperty( - updatePayload, - prevArray[i], - validAttributes - ); - } - - for (; i < nextArray.length; i++) { - // Add all remaining properties. - updatePayload = addNestedProperty( - updatePayload, - nextArray[i], - validAttributes - ); - } - - return updatePayload; - } - - function diffNestedProperty( - updatePayload, - prevProp, - nextProp, - validAttributes - ) { - if (!updatePayload && prevProp === nextProp) { - // If no properties have been added, then we can bail out quickly on object - // equality. - return updatePayload; - } - - if (!prevProp || !nextProp) { - if (nextProp) { - return addNestedProperty(updatePayload, nextProp, validAttributes); - } - - if (prevProp) { - return clearNestedProperty(updatePayload, prevProp, validAttributes); - } - - return updatePayload; - } - - if (!isArray(prevProp) && !isArray(nextProp)) { - // Both are leaves, we can diff the leaves. - return diffProperties( - updatePayload, - prevProp, - nextProp, - validAttributes - ); - } - - if (isArray(prevProp) && isArray(nextProp)) { - // Both are arrays, we can diff the arrays. - return diffNestedArrayProperty( - updatePayload, - prevProp, - nextProp, - validAttributes - ); - } - if (isArray(prevProp)) { - return diffProperties( - updatePayload, - ReactNativePrivateInterface.flattenStyle(prevProp), - nextProp, - validAttributes - ); - } + if (child === b) { + // We've determined that B is the current branch. + assertIsMounted(parentA); + return alternate; + } - return diffProperties( - updatePayload, - prevProp, - ReactNativePrivateInterface.flattenStyle(nextProp), - validAttributes - ); - } - /** - * addNestedProperty takes a single set of props and valid attribute - * attribute configurations. It processes each prop and adds it to the - * updatePayload. - */ + child = child.sibling; + } // We should never have an alternate for any mounting node. So the only + // way this could possibly happen is if this was unmounted, if at all. - function addNestedProperty(updatePayload, nextProp, validAttributes) { - if (!nextProp) { - return updatePayload; - } - if (!isArray(nextProp)) { - // Add each property of the leaf. - return addProperties(updatePayload, nextProp, validAttributes); - } + throw new Error('Unable to find node on an unmounted component.'); + } - for (var i = 0; i < nextProp.length; i++) { - // Add all the properties of the array. - updatePayload = addNestedProperty( - updatePayload, - nextProp[i], - validAttributes - ); - } + if (a.return !== b.return) { + // The return pointer of A and the return pointer of B point to different + // fibers. We assume that return pointers never criss-cross, so A must + // belong to the child set of A.return, and B must belong to the child + // set of B.return. + a = parentA; + b = parentB; + } else { + // The return pointers point to the same fiber. We'll have to use the + // default, slow path: scan the child sets of each parent alternate to see + // which child belongs to which set. + // + // Search parent A's child set + var didFindChild = false; + var _child = parentA.child; - return updatePayload; - } - /** - * clearNestedProperty takes a single set of props and valid attributes. It - * adds a null sentinel to the updatePayload, for each prop key. - */ + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentA; + b = parentB; + break; + } - function clearNestedProperty(updatePayload, prevProp, validAttributes) { - if (!prevProp) { - return updatePayload; - } + if (_child === b) { + didFindChild = true; + b = parentA; + a = parentB; + break; + } - if (!isArray(prevProp)) { - // Add each property of the leaf. - return clearProperties(updatePayload, prevProp, validAttributes); + _child = _child.sibling; } - for (var i = 0; i < prevProp.length; i++) { - // Add all the properties of the array. - updatePayload = clearNestedProperty( - updatePayload, - prevProp[i], - validAttributes - ); - } + if (!didFindChild) { + // Search parent B's child set + _child = parentB.child; - return updatePayload; - } - /** - * diffProperties takes two sets of props and a set of valid attributes - * and write to updatePayload the values that changed or were deleted. - * If no updatePayload is provided, a new one is created and returned if - * anything changed. - */ + while (_child) { + if (_child === a) { + didFindChild = true; + a = parentB; + b = parentA; + break; + } - function diffProperties( - updatePayload, - prevProps, - nextProps, - validAttributes - ) { - var attributeConfig; - var nextProp; - var prevProp; + if (_child === b) { + didFindChild = true; + b = parentB; + a = parentA; + break; + } - for (var propKey in nextProps) { - attributeConfig = validAttributes[propKey]; + _child = _child.sibling; + } - if (!attributeConfig) { - continue; // not a valid native prop + if (!didFindChild) { + throw new Error('Child was not found in either parent set. This indicates a bug ' + 'in React related to the return pointer. Please file an issue.'); } + } + } - prevProp = prevProps[propKey]; - nextProp = nextProps[propKey]; // functions are converted to booleans as markers that the associated - // events should be sent from native. + if (a.alternate !== b) { + throw new Error("Return fibers should always be each others' alternates. " + 'This error is likely caused by a bug in React. Please file an issue.'); + } + } // If the root is not a host container, we're in a disconnected tree. I.e. + // unmounted. - if (typeof nextProp === "function") { - nextProp = true; // If nextProp is not a function, then don't bother changing prevProp - // since nextProp will win and go into the updatePayload regardless. - if (typeof prevProp === "function") { - prevProp = true; - } - } // An explicit value of undefined is treated as a null because it overrides - // any other preceding value. + if (a.tag !== HostRoot) { + throw new Error('Unable to find node on an unmounted component.'); + } - if (typeof nextProp === "undefined") { - nextProp = null; + if (a.stateNode.current === a) { + // We've determined that A is the current branch. + return fiber; + } // Otherwise B has to be current branch. - if (typeof prevProp === "undefined") { - prevProp = null; - } - } - if (removedKeys) { - removedKeys[propKey] = false; - } - - if (updatePayload && updatePayload[propKey] !== undefined) { - // Something else already triggered an update to this key because another - // value diffed. Since we're now later in the nested arrays our value is - // more important so we need to calculate it and override the existing - // value. It doesn't matter if nothing changed, we'll set it anyway. - // Pattern match on: attributeConfig - if (typeof attributeConfig !== "object") { - // case: !Object is the default case - updatePayload[propKey] = nextProp; - } else if ( - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration - var nextValue = - typeof attributeConfig.process === "function" - ? attributeConfig.process(nextProp) - : nextProp; - updatePayload[propKey] = nextValue; - } + return alternate; +} +function findCurrentHostFiber(parent) { + var currentParent = findCurrentFiberUsingSlowPath(parent); + return currentParent !== null ? findCurrentHostFiberImpl(currentParent) : null; +} - continue; - } +function findCurrentHostFiberImpl(node) { + // Next we'll drill down this component to find the first HostComponent/Text. + var tag = node.tag; - if (prevProp === nextProp) { - continue; // nothing changed - } // Pattern match on: attributeConfig + if (tag === HostComponent || tag === HostHoistable || tag === HostSingleton || tag === HostText) { + return node; + } - if (typeof attributeConfig !== "object") { - // case: !Object is the default case - if (defaultDiffer(prevProp, nextProp)) { - // a normal leaf has changed - (updatePayload || (updatePayload = {}))[propKey] = nextProp; - } - } else if ( - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration - var shouldUpdate = - prevProp === undefined || - (typeof attributeConfig.diff === "function" - ? attributeConfig.diff(prevProp, nextProp) - : defaultDiffer(prevProp, nextProp)); - - if (shouldUpdate) { - var _nextValue = - typeof attributeConfig.process === "function" // $FlowFixMe[incompatible-use] found when upgrading Flow - ? attributeConfig.process(nextProp) - : nextProp; - - (updatePayload || (updatePayload = {}))[propKey] = _nextValue; - } - } else { - // default: fallthrough case when nested properties are defined - removedKeys = null; - removedKeyCount = 0; // We think that attributeConfig is not CustomAttributeConfiguration at - // this point so we assume it must be AttributeConfiguration. - - updatePayload = diffNestedProperty( - updatePayload, - prevProp, - nextProp, - attributeConfig - ); - - if (removedKeyCount > 0 && updatePayload) { - restoreDeletedValuesInNestedArray( - updatePayload, - nextProp, - attributeConfig - ); - removedKeys = null; - } - } - } // Also iterate through all the previous props to catch any that have been - // removed and make sure native gets the signal so it can reset them to the - // default. + var child = node.child; - for (var _propKey in prevProps) { - if (nextProps[_propKey] !== undefined) { - continue; // we've already covered this key in the previous pass - } + while (child !== null) { + var match = findCurrentHostFiberImpl(child); - attributeConfig = validAttributes[_propKey]; + if (match !== null) { + return match; + } - if (!attributeConfig) { - continue; // not a valid native prop - } + child = child.sibling; + } - if (updatePayload && updatePayload[_propKey] !== undefined) { - // This was already updated to a diff result earlier. - continue; - } + return null; +} +function doesFiberContain(parentFiber, childFiber) { + var node = childFiber; + var parentFiberAlternate = parentFiber.alternate; - prevProp = prevProps[_propKey]; + while (node !== null) { + if (node === parentFiber || node === parentFiberAlternate) { + return true; + } - if (prevProp === undefined) { - continue; // was already empty anyway - } // Pattern match on: attributeConfig + node = node.return; + } - if ( - typeof attributeConfig !== "object" || - typeof attributeConfig.diff === "function" || - typeof attributeConfig.process === "function" - ) { - // case: CustomAttributeConfiguration | !Object - // Flag the leaf property for removal by sending a sentinel. - (updatePayload || (updatePayload = {}))[_propKey] = null; + return false; +} - if (!removedKeys) { - removedKeys = {}; - } +// Modules provided by RN: +var emptyObject$1 = {}; +/** + * Create a payload that contains all the updates between two sets of props. + * + * These helpers are all encapsulated into a single module, because they use + * mutation as a performance optimization which leads to subtle shared + * dependencies between the code paths. To avoid this mutable state leaking + * across modules, I've kept them isolated to this module. + */ +// Tracks removed keys + +var removedKeys = null; +var removedKeyCount = 0; +var deepDifferOptions = { + unsafelyIgnoreFunctions: true +}; + +function defaultDiffer(prevProp, nextProp) { + if (typeof nextProp !== 'object' || nextProp === null) { + // Scalars have already been checked for equality + return true; + } else { + // For objects and arrays, the default diffing algorithm is a deep compare + return ReactNativePrivateInterface.deepDiffer(prevProp, nextProp, deepDifferOptions); + } +} - if (!removedKeys[_propKey]) { - removedKeys[_propKey] = true; - removedKeyCount++; - } - } else { - // default: - // This is a nested attribute configuration where all the properties - // were removed so we need to go through and clear out all of them. - updatePayload = clearNestedProperty( - updatePayload, - prevProp, - attributeConfig - ); - } - } +function restoreDeletedValuesInNestedArray(updatePayload, node, validAttributes) { + if (isArray(node)) { + var i = node.length; - return updatePayload; + while (i-- && removedKeyCount > 0) { + restoreDeletedValuesInNestedArray(updatePayload, node[i], validAttributes); } - /** - * addProperties adds all the valid props to the payload after being processed. - */ + } else if (node && removedKeyCount > 0) { + var obj = node; - function addProperties(updatePayload, props, validAttributes) { - // TODO: Fast path - return diffProperties( - updatePayload, - emptyObject$1, - props, - validAttributes - ); - } - /** - * clearProperties clears all the previous props by adding a null sentinel - * to the payload for each valid key. - */ + for (var propKey in removedKeys) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (!removedKeys[propKey]) { + continue; + } - function clearProperties(updatePayload, prevProps, validAttributes) { - // TODO: Fast path - return diffProperties( - updatePayload, - prevProps, - emptyObject$1, - validAttributes - ); - } + var nextProp = obj[propKey]; - function create(props, validAttributes) { - return addProperties( - null, // updatePayload - props, - validAttributes - ); - } - function diff(prevProps, nextProps, validAttributes) { - if (enableEarlyReturnForPropDiffing) { - if (prevProps === nextProps) { - return null; // no change - } + if (nextProp === undefined) { + continue; } - return diffProperties( - null, // updatePayload - prevProps, - nextProps, - validAttributes - ); - } + var attributeConfig = validAttributes[propKey]; - /** - * In the future, we should cleanup callbacks by cancelling them instead of - * using this. - */ - function mountSafeCallback_NOT_REALLY_SAFE(context, callback) { - return function () { - if (!callback) { - return undefined; - } // This protects against createClass() components. - // We don't know if there is code depending on it. - // We intentionally don't use isMounted() because even accessing - // isMounted property on a React ES6 class will trigger a warning. - - if (typeof context.__isMounted === "boolean") { - if (!context.__isMounted) { - return undefined; - } - } // FIXME: there used to be other branches that protected - // against unmounted host components. But RN host components don't - // define isMounted() anymore, so those checks didn't do anything. - // They caused false positive warning noise so we removed them: - // https://github.com/facebook/react-native/issues/18868#issuecomment-413579095 - // However, this means that the callback is NOT guaranteed to be safe - // for host components. The solution we should implement is to make - // UIManager.measure() and similar calls truly cancelable. Then we - // can change our own code calling them to cancel when something unmounts. - - return callback.apply(context, arguments); - }; - } - function warnForStyleProps(props, validAttributes) { - { - for (var key in validAttributes.style) { - if (!(validAttributes[key] || props[key] === undefined)) { - error( - "You are setting the style `{ %s" + - ": ... }` as a prop. You " + - "should nest it in a style object. " + - "E.g. `{ style: { %s" + - ": ... } }`", - key, - key - ); - } - } + if (!attributeConfig) { + continue; // not a valid native prop } - } - var ReactNativeFiberHostComponent = /*#__PURE__*/ (function () { - function ReactNativeFiberHostComponent( - tag, - viewConfig, - internalInstanceHandleDEV - ) { - this._children = void 0; - this._nativeTag = void 0; - this._internalFiberInstanceHandleDEV = void 0; - this.viewConfig = void 0; - this._nativeTag = tag; - this._children = []; - this.viewConfig = viewConfig; + if (typeof nextProp === 'function') { + // $FlowFixMe[incompatible-type] found when upgrading Flow + nextProp = true; + } - { - this._internalFiberInstanceHandleDEV = internalInstanceHandleDEV; - } + if (typeof nextProp === 'undefined') { + // $FlowFixMe[incompatible-type] found when upgrading Flow + nextProp = null; } - var _proto = ReactNativeFiberHostComponent.prototype; + if (typeof attributeConfig !== 'object') { + // case: !Object is the default case + updatePayload[propKey] = nextProp; + } else if (typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration + var nextValue = typeof attributeConfig.process === 'function' ? attributeConfig.process(nextProp) : nextProp; + updatePayload[propKey] = nextValue; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - _proto.blur = function blur() { - ReactNativePrivateInterface.TextInputState.blurTextInput(this); - }; - _proto.focus = function focus() { - ReactNativePrivateInterface.TextInputState.focusTextInput(this); - }; + removedKeys[propKey] = false; + removedKeyCount--; + } + } +} - _proto.measure = function measure(callback) { - ReactNativePrivateInterface.UIManager.measure( - this._nativeTag, - mountSafeCallback_NOT_REALLY_SAFE(this, callback) - ); - }; +function diffNestedArrayProperty(updatePayload, prevArray, nextArray, validAttributes) { + var minLength = prevArray.length < nextArray.length ? prevArray.length : nextArray.length; + var i; - _proto.measureInWindow = function measureInWindow(callback) { - ReactNativePrivateInterface.UIManager.measureInWindow( - this._nativeTag, - mountSafeCallback_NOT_REALLY_SAFE(this, callback) - ); - }; + for (i = 0; i < minLength; i++) { + // Diff any items in the array in the forward direction. Repeated keys + // will be overwritten by later values. + updatePayload = diffNestedProperty(updatePayload, prevArray[i], nextArray[i], validAttributes); + } - _proto.measureLayout = function measureLayout( - relativeToNativeNode, - onSuccess, - onFail - /* currently unused */ - ) { - var relativeNode; - - if (typeof relativeToNativeNode === "number") { - // Already a node handle - relativeNode = relativeToNativeNode; - } else { - var nativeNode = relativeToNativeNode; + for (; i < prevArray.length; i++) { + // Clear out all remaining properties. + updatePayload = clearNestedProperty(updatePayload, prevArray[i], validAttributes); + } - if (nativeNode._nativeTag) { - relativeNode = nativeNode._nativeTag; - } - } + for (; i < nextArray.length; i++) { + // Add all remaining properties. + updatePayload = addNestedProperty(updatePayload, nextArray[i], validAttributes); + } - if (relativeNode == null) { - { - error( - "Warning: ref.measureLayout must be called with a node handle or a ref to a native component." - ); - } + return updatePayload; +} - return; - } +function diffNestedProperty(updatePayload, prevProp, nextProp, validAttributes) { + if (!updatePayload && prevProp === nextProp) { + // If no properties have been added, then we can bail out quickly on object + // equality. + return updatePayload; + } - ReactNativePrivateInterface.UIManager.measureLayout( - this._nativeTag, - relativeNode, - mountSafeCallback_NOT_REALLY_SAFE(this, onFail), - mountSafeCallback_NOT_REALLY_SAFE(this, onSuccess) - ); - }; + if (!prevProp || !nextProp) { + if (nextProp) { + return addNestedProperty(updatePayload, nextProp, validAttributes); + } - _proto.setNativeProps = function setNativeProps(nativeProps) { - { - warnForStyleProps(nativeProps, this.viewConfig.validAttributes); - } + if (prevProp) { + return clearNestedProperty(updatePayload, prevProp, validAttributes); + } - var updatePayload = create( - nativeProps, - this.viewConfig.validAttributes - ); // Avoid the overhead of bridge calls if there's no update. - // This is an expensive no-op for Android, and causes an unnecessary - // view invalidation for certain components (eg RCTTextInput) on iOS. + return updatePayload; + } - if (updatePayload != null) { - ReactNativePrivateInterface.UIManager.updateView( - this._nativeTag, - this.viewConfig.uiViewClassName, - updatePayload - ); - } - }; + if (!isArray(prevProp) && !isArray(nextProp)) { + // Both are leaves, we can diff the leaves. + return diffProperties(updatePayload, prevProp, nextProp, validAttributes); + } - return ReactNativeFiberHostComponent; - })(); - - // This module only exists as an ESM wrapper around the external CommonJS - var scheduleCallback$3 = Scheduler.unstable_scheduleCallback; - var cancelCallback$1 = Scheduler.unstable_cancelCallback; - var shouldYield = Scheduler.unstable_shouldYield; - var requestPaint = Scheduler.unstable_requestPaint; - var now$1 = Scheduler.unstable_now; - var ImmediatePriority = Scheduler.unstable_ImmediatePriority; - var UserBlockingPriority = Scheduler.unstable_UserBlockingPriority; - var NormalPriority$1 = Scheduler.unstable_NormalPriority; - var IdlePriority = Scheduler.unstable_IdlePriority; // this doesn't actually exist on the scheduler, but it *does* - // on scheduler/unstable_mock, which we'll need for internal testing - - var log$1 = Scheduler.log; - var unstable_setDisableYieldValue = Scheduler.unstable_setDisableYieldValue; - - // Helpers to patch console.logs to avoid logging during side-effect free - // replaying on render function. This currently only patches the object - // lazily which won't cover if the log function was extracted eagerly. - // We could also eagerly patch the method. - var disabledDepth = 0; - var prevLog; - var prevInfo; - var prevWarn; - var prevError; - var prevGroup; - var prevGroupCollapsed; - var prevGroupEnd; - - function disabledLog() {} - - disabledLog.__reactDisabledLog = true; - function disableLogs() { - { - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - prevLog = console.log; - prevInfo = console.info; - prevWarn = console.warn; - prevError = console.error; - prevGroup = console.group; - prevGroupCollapsed = console.groupCollapsed; - prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 - - var props = { - configurable: true, - enumerable: true, - value: disabledLog, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - info: props, - log: props, - warn: props, - error: props, - group: props, - groupCollapsed: props, - groupEnd: props - }); - /* eslint-enable react-internal/no-production-logging */ - } + if (isArray(prevProp) && isArray(nextProp)) { + // Both are arrays, we can diff the arrays. + return diffNestedArrayProperty(updatePayload, prevProp, nextProp, validAttributes); + } - disabledDepth++; + if (isArray(prevProp)) { + return diffProperties(updatePayload, ReactNativePrivateInterface.flattenStyle(prevProp), nextProp, validAttributes); + } + + return diffProperties(updatePayload, prevProp, ReactNativePrivateInterface.flattenStyle(nextProp), validAttributes); +} +/** + * addNestedProperty takes a single set of props and valid attribute + * attribute configurations. It processes each prop and adds it to the + * updatePayload. + */ + + +function addNestedProperty(updatePayload, nextProp, validAttributes) { + if (!nextProp) { + return updatePayload; + } + + if (!isArray(nextProp)) { + // Add each property of the leaf. + return addProperties(updatePayload, nextProp, validAttributes); + } + + for (var i = 0; i < nextProp.length; i++) { + // Add all the properties of the array. + updatePayload = addNestedProperty(updatePayload, nextProp[i], validAttributes); + } + + return updatePayload; +} +/** + * clearNestedProperty takes a single set of props and valid attributes. It + * adds a null sentinel to the updatePayload, for each prop key. + */ + + +function clearNestedProperty(updatePayload, prevProp, validAttributes) { + if (!prevProp) { + return updatePayload; + } + + if (!isArray(prevProp)) { + // Add each property of the leaf. + return clearProperties(updatePayload, prevProp, validAttributes); + } + + for (var i = 0; i < prevProp.length; i++) { + // Add all the properties of the array. + updatePayload = clearNestedProperty(updatePayload, prevProp[i], validAttributes); + } + + return updatePayload; +} +/** + * diffProperties takes two sets of props and a set of valid attributes + * and write to updatePayload the values that changed or were deleted. + * If no updatePayload is provided, a new one is created and returned if + * anything changed. + */ + + +function diffProperties(updatePayload, prevProps, nextProps, validAttributes) { + var attributeConfig; + var nextProp; + var prevProp; + + for (var propKey in nextProps) { + attributeConfig = validAttributes[propKey]; + + if (!attributeConfig) { + continue; // not a valid native prop + } + + prevProp = prevProps[propKey]; + nextProp = nextProps[propKey]; // functions are converted to booleans as markers that the associated + // events should be sent from native. + + if (typeof nextProp === 'function') { + nextProp = true; // If nextProp is not a function, then don't bother changing prevProp + // since nextProp will win and go into the updatePayload regardless. + + if (typeof prevProp === 'function') { + prevProp = true; + } + } // An explicit value of undefined is treated as a null because it overrides + // any other preceding value. + + + if (typeof nextProp === 'undefined') { + nextProp = null; + + if (typeof prevProp === 'undefined') { + prevProp = null; } } - function reenableLogs() { - { - disabledDepth--; - - if (disabledDepth === 0) { - /* eslint-disable react-internal/no-production-logging */ - var props = { - configurable: true, - enumerable: true, - writable: true - }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - - Object.defineProperties(console, { - log: assign({}, props, { - value: prevLog - }), - info: assign({}, props, { - value: prevInfo - }), - warn: assign({}, props, { - value: prevWarn - }), - error: assign({}, props, { - value: prevError - }), - group: assign({}, props, { - value: prevGroup - }), - groupCollapsed: assign({}, props, { - value: prevGroupCollapsed - }), - groupEnd: assign({}, props, { - value: prevGroupEnd - }) - }); - /* eslint-enable react-internal/no-production-logging */ - } - if (disabledDepth < 0) { - error( - "disabledDepth fell below zero. " + - "This is a bug in React. Please file an issue." - ); - } + if (removedKeys) { + removedKeys[propKey] = false; + } + + if (updatePayload && updatePayload[propKey] !== undefined) { + // Something else already triggered an update to this key because another + // value diffed. Since we're now later in the nested arrays our value is + // more important so we need to calculate it and override the existing + // value. It doesn't matter if nothing changed, we'll set it anyway. + // Pattern match on: attributeConfig + if (typeof attributeConfig !== 'object') { + // case: !Object is the default case + updatePayload[propKey] = nextProp; + } else if (typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration + var nextValue = typeof attributeConfig.process === 'function' ? attributeConfig.process(nextProp) : nextProp; + updatePayload[propKey] = nextValue; } + + continue; } - var rendererID = null; - var injectedHook = null; - var injectedProfilingHooks = null; - var hasLoggedError = false; - var isDevToolsPresent = - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined"; - function injectInternals(internals) { - if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === "undefined") { - // No DevTools - return false; + if (prevProp === nextProp) { + continue; // nothing changed + } // Pattern match on: attributeConfig + + + if (typeof attributeConfig !== 'object') { + // case: !Object is the default case + if (defaultDiffer(prevProp, nextProp)) { + // a normal leaf has changed + (updatePayload || (updatePayload = {}))[propKey] = nextProp; } + } else if (typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration + var shouldUpdate = prevProp === undefined || (typeof attributeConfig.diff === 'function' ? attributeConfig.diff(prevProp, nextProp) : defaultDiffer(prevProp, nextProp)); - var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__; + if (shouldUpdate) { + var _nextValue = typeof attributeConfig.process === 'function' ? // $FlowFixMe[incompatible-use] found when upgrading Flow + attributeConfig.process(nextProp) : nextProp; - if (hook.isDisabled) { - // This isn't a real property on the hook, but it can be set to opt out - // of DevTools integration and associated warnings and logs. - // https://github.com/facebook/react/issues/3877 - return true; + (updatePayload || (updatePayload = {}))[propKey] = _nextValue; } + } else { + // default: fallthrough case when nested properties are defined + removedKeys = null; + removedKeyCount = 0; // We think that attributeConfig is not CustomAttributeConfiguration at + // this point so we assume it must be AttributeConfiguration. - if (!hook.supportsFiber) { - { - error( - "The installed version of React DevTools is too old and will not work " + - "with the current version of React. Please update React DevTools. " + - "https://react.dev/link/react-devtools" - ); - } // DevTools exists, even though it doesn't support Fiber. + updatePayload = diffNestedProperty(updatePayload, prevProp, nextProp, attributeConfig); - return true; + if (removedKeyCount > 0 && updatePayload) { + restoreDeletedValuesInNestedArray(updatePayload, nextProp, attributeConfig); + removedKeys = null; } + } + } // Also iterate through all the previous props to catch any that have been + // removed and make sure native gets the signal so it can reset them to the + // default. - try { - if (enableSchedulingProfiler) { - // Conditionally inject these hooks only if Timeline profiler is supported by this build. - // This gives DevTools a way to feature detect that isn't tied to version number - // (since profiling and timeline are controlled by different feature flags). - internals = assign({}, internals, { - getLaneLabelMap: getLaneLabelMap, - injectProfilingHooks: injectProfilingHooks - }); - } - rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks. + for (var _propKey in prevProps) { + if (nextProps[_propKey] !== undefined) { + continue; // we've already covered this key in the previous pass + } - injectedHook = hook; - } catch (err) { - // Catch all errors because it is unsafe to throw during initialization. - { - error("React instrumentation encountered an error: %s.", err); - } + attributeConfig = validAttributes[_propKey]; + + if (!attributeConfig) { + continue; // not a valid native prop + } + + if (updatePayload && updatePayload[_propKey] !== undefined) { + // This was already updated to a diff result earlier. + continue; + } + + prevProp = prevProps[_propKey]; + + if (prevProp === undefined) { + continue; // was already empty anyway + } // Pattern match on: attributeConfig + + + if (typeof attributeConfig !== 'object' || typeof attributeConfig.diff === 'function' || typeof attributeConfig.process === 'function') { + // case: CustomAttributeConfiguration | !Object + // Flag the leaf property for removal by sending a sentinel. + (updatePayload || (updatePayload = {}))[_propKey] = null; + + if (!removedKeys) { + removedKeys = {}; } - if (hook.checkDCE) { - // This is the real DevTools. - return true; - } else { - // This is likely a hook installed by Fast Refresh runtime. - return false; + if (!removedKeys[_propKey]) { + removedKeys[_propKey] = true; + removedKeyCount++; } + } else { + // default: + // This is a nested attribute configuration where all the properties + // were removed so we need to go through and clear out all of them. + updatePayload = clearNestedProperty(updatePayload, prevProp, attributeConfig); } - function onScheduleRoot(root, children) { - { - if ( - injectedHook && - typeof injectedHook.onScheduleFiberRoot === "function" - ) { - try { - injectedHook.onScheduleFiberRoot(rendererID, root, children); - } catch (err) { - if (!hasLoggedError) { - hasLoggedError = true; + } - error("React instrumentation encountered an error: %s", err); - } - } - } + return updatePayload; +} +/** + * addProperties adds all the valid props to the payload after being processed. + */ + + +function addProperties(updatePayload, props, validAttributes) { + // TODO: Fast path + return diffProperties(updatePayload, emptyObject$1, props, validAttributes); +} +/** + * clearProperties clears all the previous props by adding a null sentinel + * to the payload for each valid key. + */ + + +function clearProperties(updatePayload, prevProps, validAttributes) { + // TODO: Fast path + return diffProperties(updatePayload, prevProps, emptyObject$1, validAttributes); +} + +function create(props, validAttributes) { + return addProperties(null, // updatePayload + props, validAttributes); +} +function diff(prevProps, nextProps, validAttributes) { + if (enableEarlyReturnForPropDiffing) { + if (prevProps === nextProps) { + return null; // no change + } + } + + return diffProperties(null, // updatePayload + prevProps, nextProps, validAttributes); +} + +/** + * In the future, we should cleanup callbacks by cancelling them instead of + * using this. + */ +function mountSafeCallback_NOT_REALLY_SAFE(context, callback) { + return function () { + if (!callback) { + return undefined; + } // This protects against createClass() components. + // We don't know if there is code depending on it. + // We intentionally don't use isMounted() because even accessing + // isMounted property on a React ES6 class will trigger a warning. + + + if (typeof context.__isMounted === 'boolean') { + if (!context.__isMounted) { + return undefined; + } + } // FIXME: there used to be other branches that protected + // against unmounted host components. But RN host components don't + // define isMounted() anymore, so those checks didn't do anything. + // They caused false positive warning noise so we removed them: + // https://github.com/facebook/react-native/issues/18868#issuecomment-413579095 + // However, this means that the callback is NOT guaranteed to be safe + // for host components. The solution we should implement is to make + // UIManager.measure() and similar calls truly cancelable. Then we + // can change our own code calling them to cancel when something unmounts. + + + return callback.apply(context, arguments); + }; +} +function warnForStyleProps(props, validAttributes) { + { + for (var key in validAttributes.style) { + if (!(validAttributes[key] || props[key] === undefined)) { + error('You are setting the style `{ %s' + ': ... }` as a prop. You ' + 'should nest it in a style object. ' + 'E.g. `{ style: { %s' + ': ... } }`', key, key); } } - function onCommitRoot(root, eventPriority) { - if ( - injectedHook && - typeof injectedHook.onCommitFiberRoot === "function" - ) { - try { - var didError = (root.current.flags & DidCapture) === DidCapture; + } +} - if (enableProfilerTimer) { - var schedulerPriority; +var ReactNativeFiberHostComponent = /*#__PURE__*/function () { + function ReactNativeFiberHostComponent(tag, viewConfig, internalInstanceHandleDEV) { + this._children = void 0; + this._nativeTag = void 0; + this._internalFiberInstanceHandleDEV = void 0; + this.viewConfig = void 0; + this._nativeTag = tag; + this._children = []; + this.viewConfig = viewConfig; - switch (eventPriority) { - case DiscreteEventPriority: - schedulerPriority = ImmediatePriority; - break; + { + this._internalFiberInstanceHandleDEV = internalInstanceHandleDEV; + } + } - case ContinuousEventPriority: - schedulerPriority = UserBlockingPriority; - break; + var _proto = ReactNativeFiberHostComponent.prototype; - case DefaultEventPriority: - schedulerPriority = NormalPriority$1; - break; + _proto.blur = function blur() { + ReactNativePrivateInterface.TextInputState.blurTextInput(this); + }; - case IdleEventPriority: - schedulerPriority = IdlePriority; - break; + _proto.focus = function focus() { + ReactNativePrivateInterface.TextInputState.focusTextInput(this); + }; - default: - schedulerPriority = NormalPriority$1; - break; - } + _proto.measure = function measure(callback) { + ReactNativePrivateInterface.UIManager.measure(this._nativeTag, mountSafeCallback_NOT_REALLY_SAFE(this, callback)); + }; - injectedHook.onCommitFiberRoot( - rendererID, - root, - schedulerPriority, - didError - ); - } - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + _proto.measureInWindow = function measureInWindow(callback) { + ReactNativePrivateInterface.UIManager.measureInWindow(this._nativeTag, mountSafeCallback_NOT_REALLY_SAFE(this, callback)); + }; - error("React instrumentation encountered an error: %s", err); - } - } - } + _proto.measureLayout = function measureLayout(relativeToNativeNode, onSuccess, onFail + /* currently unused */ + ) { + var relativeNode; + + if (typeof relativeToNativeNode === 'number') { + // Already a node handle + relativeNode = relativeToNativeNode; + } else { + var nativeNode = relativeToNativeNode; + + if (nativeNode._nativeTag) { + relativeNode = nativeNode._nativeTag; } } - function onPostCommitRoot(root) { - if ( - injectedHook && - typeof injectedHook.onPostCommitFiberRoot === "function" - ) { - try { - injectedHook.onPostCommitFiberRoot(rendererID, root); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; - error("React instrumentation encountered an error: %s", err); - } - } - } + if (relativeNode == null) { + { + error('Warning: ref.measureLayout must be called with a node handle or a ref to a native component.'); } + + return; } - function onCommitUnmount(fiber) { - if ( - injectedHook && - typeof injectedHook.onCommitFiberUnmount === "function" - ) { - try { - injectedHook.onCommitFiberUnmount(rendererID, fiber); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; - error("React instrumentation encountered an error: %s", err); - } - } - } - } + ReactNativePrivateInterface.UIManager.measureLayout(this._nativeTag, relativeNode, mountSafeCallback_NOT_REALLY_SAFE(this, onFail), mountSafeCallback_NOT_REALLY_SAFE(this, onSuccess)); + }; + + _proto.setNativeProps = function setNativeProps(nativeProps) { + { + warnForStyleProps(nativeProps, this.viewConfig.validAttributes); + } + + var updatePayload = create(nativeProps, this.viewConfig.validAttributes); // Avoid the overhead of bridge calls if there's no update. + // This is an expensive no-op for Android, and causes an unnecessary + // view invalidation for certain components (eg RCTTextInput) on iOS. + + if (updatePayload != null) { + ReactNativePrivateInterface.UIManager.updateView(this._nativeTag, this.viewConfig.uiViewClassName, updatePayload); + } + }; + + return ReactNativeFiberHostComponent; +}(); + +// This module only exists as an ESM wrapper around the external CommonJS +var scheduleCallback$3 = Scheduler.unstable_scheduleCallback; +var cancelCallback$1 = Scheduler.unstable_cancelCallback; +var shouldYield = Scheduler.unstable_shouldYield; +var requestPaint = Scheduler.unstable_requestPaint; +var now$1 = Scheduler.unstable_now; +var ImmediatePriority = Scheduler.unstable_ImmediatePriority; +var UserBlockingPriority = Scheduler.unstable_UserBlockingPriority; +var NormalPriority$1 = Scheduler.unstable_NormalPriority; +var IdlePriority = Scheduler.unstable_IdlePriority; // this doesn't actually exist on the scheduler, but it *does* +// on scheduler/unstable_mock, which we'll need for internal testing + +var log$1 = Scheduler.log; +var unstable_setDisableYieldValue = Scheduler.unstable_setDisableYieldValue; + +// Helpers to patch console.logs to avoid logging during side-effect free +// replaying on render function. This currently only patches the object +// lazily which won't cover if the log function was extracted eagerly. +// We could also eagerly patch the method. +var disabledDepth = 0; +var prevLog; +var prevInfo; +var prevWarn; +var prevError; +var prevGroup; +var prevGroupCollapsed; +var prevGroupEnd; + +function disabledLog() {} + +disabledLog.__reactDisabledLog = true; +function disableLogs() { + { + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + prevLog = console.log; + prevInfo = console.info; + prevWarn = console.warn; + prevError = console.error; + prevGroup = console.group; + prevGroupCollapsed = console.groupCollapsed; + prevGroupEnd = console.groupEnd; // https://github.com/facebook/react/issues/19099 + + var props = { + configurable: true, + enumerable: true, + value: disabledLog, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. + + Object.defineProperties(console, { + info: props, + log: props, + warn: props, + error: props, + group: props, + groupCollapsed: props, + groupEnd: props + }); + /* eslint-enable react-internal/no-production-logging */ } - function setIsStrictModeForDevtools(newIsStrictMode) { - if (consoleManagedByDevToolsDuringStrictMode) { - if (typeof log$1 === "function") { - // We're in a test because Scheduler.log only exists - // in SchedulerMock. To reduce the noise in strict mode tests, - // suppress warnings and disable scheduler yielding during the double render - unstable_setDisableYieldValue(newIsStrictMode); - setSuppressWarning(newIsStrictMode); - } - if (injectedHook && typeof injectedHook.setStrictMode === "function") { - try { - injectedHook.setStrictMode(rendererID, newIsStrictMode); - } catch (err) { - { - if (!hasLoggedError) { - hasLoggedError = true; + disabledDepth++; + } +} +function reenableLogs() { + { + disabledDepth--; - error("React instrumentation encountered an error: %s", err); - } - } - } - } - } else { - if (newIsStrictMode) { - disableLogs(); - } else { - reenableLogs(); - } - } - } // Profiler API hooks + if (disabledDepth === 0) { + /* eslint-disable react-internal/no-production-logging */ + var props = { + configurable: true, + enumerable: true, + writable: true + }; // $FlowFixMe[cannot-write] Flow thinks console is immutable. - function injectProfilingHooks(profilingHooks) { - injectedProfilingHooks = profilingHooks; + Object.defineProperties(console, { + log: assign({}, props, { + value: prevLog + }), + info: assign({}, props, { + value: prevInfo + }), + warn: assign({}, props, { + value: prevWarn + }), + error: assign({}, props, { + value: prevError + }), + group: assign({}, props, { + value: prevGroup + }), + groupCollapsed: assign({}, props, { + value: prevGroupCollapsed + }), + groupEnd: assign({}, props, { + value: prevGroupEnd + }) + }); + /* eslint-enable react-internal/no-production-logging */ } - function getLaneLabelMap() { - { - var map = new Map(); - var lane = 1; + if (disabledDepth < 0) { + error('disabledDepth fell below zero. ' + 'This is a bug in React. Please file an issue.'); + } + } +} - for (var index = 0; index < TotalLanes; index++) { - var label = getLabelForLane(lane); - map.set(lane, label); - lane *= 2; - } +var rendererID = null; +var injectedHook = null; +var injectedProfilingHooks = null; +var hasLoggedError = false; +var isDevToolsPresent = typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined'; +function injectInternals(internals) { + if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') { + // No DevTools + return false; + } + + var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__; + + if (hook.isDisabled) { + // This isn't a real property on the hook, but it can be set to opt out + // of DevTools integration and associated warnings and logs. + // https://github.com/facebook/react/issues/3877 + return true; + } + + if (!hook.supportsFiber) { + { + error('The installed version of React DevTools is too old and will not work ' + 'with the current version of React. Please update React DevTools. ' + 'https://react.dev/link/react-devtools'); + } // DevTools exists, even though it doesn't support Fiber. - return map; - } + + return true; + } + + try { + if (enableSchedulingProfiler) { + // Conditionally inject these hooks only if Timeline profiler is supported by this build. + // This gives DevTools a way to feature detect that isn't tied to version number + // (since profiling and timeline are controlled by different feature flags). + internals = assign({}, internals, { + getLaneLabelMap: getLaneLabelMap, + injectProfilingHooks: injectProfilingHooks + }); } - function markCommitStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markCommitStarted === "function" - ) { - injectedProfilingHooks.markCommitStarted(lanes); - } - } + rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks. + + injectedHook = hook; + } catch (err) { + // Catch all errors because it is unsafe to throw during initialization. + { + error('React instrumentation encountered an error: %s.', err); } - function markCommitStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markCommitStopped === "function" - ) { - injectedProfilingHooks.markCommitStopped(); + } + + if (hook.checkDCE) { + // This is the real DevTools. + return true; + } else { + // This is likely a hook installed by Fast Refresh runtime. + return false; + } +} +function onScheduleRoot(root, children) { + { + if (injectedHook && typeof injectedHook.onScheduleFiberRoot === 'function') { + try { + injectedHook.onScheduleFiberRoot(rendererID, root, children); + } catch (err) { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentRenderStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentRenderStarted === - "function" - ) { - injectedProfilingHooks.markComponentRenderStarted(fiber); + } +} +function onCommitRoot(root, eventPriority) { + if (injectedHook && typeof injectedHook.onCommitFiberRoot === 'function') { + try { + var didError = (root.current.flags & DidCapture) === DidCapture; + + if (enableProfilerTimer) { + var schedulerPriority; + + switch (eventPriority) { + case DiscreteEventPriority: + schedulerPriority = ImmediatePriority; + break; + + case ContinuousEventPriority: + schedulerPriority = UserBlockingPriority; + break; + + case DefaultEventPriority: + schedulerPriority = NormalPriority$1; + break; + + case IdleEventPriority: + schedulerPriority = IdlePriority; + break; + + default: + schedulerPriority = NormalPriority$1; + break; } + + injectedHook.onCommitFiberRoot(rendererID, root, schedulerPriority, didError); } - } - function markComponentRenderStopped() { + } catch (err) { { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentRenderStopped === - "function" - ) { - injectedProfilingHooks.markComponentRenderStopped(); + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentPassiveEffectMountStarted(fiber) { + } +} +function onPostCommitRoot(root) { + if (injectedHook && typeof injectedHook.onPostCommitFiberRoot === 'function') { + try { + injectedHook.onPostCommitFiberRoot(rendererID, root); + } catch (err) { { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectMountStarted === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectMountStarted(fiber); + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentPassiveEffectMountStopped() { + } +} +function onCommitUnmount(fiber) { + if (injectedHook && typeof injectedHook.onCommitFiberUnmount === 'function') { + try { + injectedHook.onCommitFiberUnmount(rendererID, fiber); + } catch (err) { { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectMountStopped === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectMountStopped(); + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); } } } - function markComponentPassiveEffectUnmountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStarted === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectUnmountStarted( - fiber - ); - } - } + } +} +function setIsStrictModeForDevtools(newIsStrictMode) { + if (consoleManagedByDevToolsDuringStrictMode) { + if (typeof log$1 === 'function') { + // We're in a test because Scheduler.log only exists + // in SchedulerMock. To reduce the noise in strict mode tests, + // suppress warnings and disable scheduler yielding during the double render + unstable_setDisableYieldValue(newIsStrictMode); + setSuppressWarning(newIsStrictMode); } - function markComponentPassiveEffectUnmountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStopped === - "function" - ) { - injectedProfilingHooks.markComponentPassiveEffectUnmountStopped(); + + if (injectedHook && typeof injectedHook.setStrictMode === 'function') { + try { + injectedHook.setStrictMode(rendererID, newIsStrictMode); + } catch (err) { + { + if (!hasLoggedError) { + hasLoggedError = true; + + error('React instrumentation encountered an error: %s', err); + } } } } - function markComponentLayoutEffectMountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectMountStarted === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectMountStarted(fiber); - } - } + } else { + if (newIsStrictMode) { + disableLogs(); + } else { + reenableLogs(); } - function markComponentLayoutEffectMountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectMountStopped === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectMountStopped(); - } - } + } +} // Profiler API hooks + +function injectProfilingHooks(profilingHooks) { + injectedProfilingHooks = profilingHooks; +} + +function getLaneLabelMap() { + { + var map = new Map(); + var lane = 1; + + for (var index = 0; index < TotalLanes; index++) { + var label = getLabelForLane(lane); + map.set(lane, label); + lane *= 2; } - function markComponentLayoutEffectUnmountStarted(fiber) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStarted === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectUnmountStarted(fiber); - } - } + + return map; + } +} + +function markCommitStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markCommitStarted === 'function') { + injectedProfilingHooks.markCommitStarted(lanes); } - function markComponentLayoutEffectUnmountStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStopped === - "function" - ) { - injectedProfilingHooks.markComponentLayoutEffectUnmountStopped(); - } - } + } +} +function markCommitStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markCommitStopped === 'function') { + injectedProfilingHooks.markCommitStopped(); } - function markComponentErrored(fiber, thrownValue, lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentErrored === "function" - ) { - injectedProfilingHooks.markComponentErrored( - fiber, - thrownValue, - lanes - ); - } - } + } +} +function markComponentRenderStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentRenderStarted === 'function') { + injectedProfilingHooks.markComponentRenderStarted(fiber); } - function markComponentSuspended(fiber, wakeable, lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markComponentSuspended === "function" - ) { - injectedProfilingHooks.markComponentSuspended(fiber, wakeable, lanes); - } - } + } +} +function markComponentRenderStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentRenderStopped === 'function') { + injectedProfilingHooks.markComponentRenderStopped(); } - function markLayoutEffectsStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markLayoutEffectsStarted === "function" - ) { - injectedProfilingHooks.markLayoutEffectsStarted(lanes); - } - } + } +} +function markComponentPassiveEffectMountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectMountStarted === 'function') { + injectedProfilingHooks.markComponentPassiveEffectMountStarted(fiber); } - function markLayoutEffectsStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markLayoutEffectsStopped === "function" - ) { - injectedProfilingHooks.markLayoutEffectsStopped(); - } - } + } +} +function markComponentPassiveEffectMountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectMountStopped === 'function') { + injectedProfilingHooks.markComponentPassiveEffectMountStopped(); } - function markPassiveEffectsStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markPassiveEffectsStarted === "function" - ) { - injectedProfilingHooks.markPassiveEffectsStarted(lanes); - } - } + } +} +function markComponentPassiveEffectUnmountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStarted === 'function') { + injectedProfilingHooks.markComponentPassiveEffectUnmountStarted(fiber); } - function markPassiveEffectsStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markPassiveEffectsStopped === "function" - ) { - injectedProfilingHooks.markPassiveEffectsStopped(); - } - } + } +} +function markComponentPassiveEffectUnmountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentPassiveEffectUnmountStopped === 'function') { + injectedProfilingHooks.markComponentPassiveEffectUnmountStopped(); } - function markRenderStarted(lanes) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderStarted === "function" - ) { - injectedProfilingHooks.markRenderStarted(lanes); - } - } + } +} +function markComponentLayoutEffectMountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectMountStarted === 'function') { + injectedProfilingHooks.markComponentLayoutEffectMountStarted(fiber); } - function markRenderYielded() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderYielded === "function" - ) { - injectedProfilingHooks.markRenderYielded(); - } - } + } +} +function markComponentLayoutEffectMountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectMountStopped === 'function') { + injectedProfilingHooks.markComponentLayoutEffectMountStopped(); } - function markRenderStopped() { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderStopped === "function" - ) { - injectedProfilingHooks.markRenderStopped(); - } - } + } +} +function markComponentLayoutEffectUnmountStarted(fiber) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStarted === 'function') { + injectedProfilingHooks.markComponentLayoutEffectUnmountStarted(fiber); + } + } +} +function markComponentLayoutEffectUnmountStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentLayoutEffectUnmountStopped === 'function') { + injectedProfilingHooks.markComponentLayoutEffectUnmountStopped(); + } + } +} +function markComponentErrored(fiber, thrownValue, lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentErrored === 'function') { + injectedProfilingHooks.markComponentErrored(fiber, thrownValue, lanes); } - function markRenderScheduled(lane) { + } +} +function markComponentSuspended(fiber, wakeable, lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markComponentSuspended === 'function') { + injectedProfilingHooks.markComponentSuspended(fiber, wakeable, lanes); + } + } +} +function markLayoutEffectsStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markLayoutEffectsStarted === 'function') { + injectedProfilingHooks.markLayoutEffectsStarted(lanes); + } + } +} +function markLayoutEffectsStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markLayoutEffectsStopped === 'function') { + injectedProfilingHooks.markLayoutEffectsStopped(); + } + } +} +function markPassiveEffectsStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markPassiveEffectsStarted === 'function') { + injectedProfilingHooks.markPassiveEffectsStarted(lanes); + } + } +} +function markPassiveEffectsStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markPassiveEffectsStopped === 'function') { + injectedProfilingHooks.markPassiveEffectsStopped(); + } + } +} +function markRenderStarted(lanes) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderStarted === 'function') { + injectedProfilingHooks.markRenderStarted(lanes); + } + } +} +function markRenderYielded() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderYielded === 'function') { + injectedProfilingHooks.markRenderYielded(); + } + } +} +function markRenderStopped() { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderStopped === 'function') { + injectedProfilingHooks.markRenderStopped(); + } + } +} +function markRenderScheduled(lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markRenderScheduled === 'function') { + injectedProfilingHooks.markRenderScheduled(lane); + } + } +} +function markForceUpdateScheduled(fiber, lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markForceUpdateScheduled === 'function') { + injectedProfilingHooks.markForceUpdateScheduled(fiber, lane); + } + } +} +function markStateUpdateScheduled(fiber, lane) { + { + if (injectedProfilingHooks !== null && typeof injectedProfilingHooks.markStateUpdateScheduled === 'function') { + injectedProfilingHooks.markStateUpdateScheduled(fiber, lane); + } + } +} + +var NoMode = +/* */ +0; // TODO: Remove ConcurrentMode by reading from the root tag instead + +var ConcurrentMode = +/* */ +1; +var ProfileMode = +/* */ +2; +var StrictLegacyMode = +/* */ +8; +var StrictEffectsMode = +/* */ +16; +var NoStrictPassiveEffectsMode = +/* */ +64; + +// TODO: This is pretty well supported by browsers. Maybe we can drop it. +var clz32 = Math.clz32 ? Math.clz32 : clz32Fallback; // Count leading zeros. +// Based on: +// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32 + +var log = Math.log; +var LN2 = Math.LN2; + +function clz32Fallback(x) { + var asUint = x >>> 0; + + if (asUint === 0) { + return 32; + } + + return 31 - (log(asUint) / LN2 | 0) | 0; +} + +// If those values are changed that package should be rebuilt and redeployed. + +var TotalLanes = 31; +var NoLanes = +/* */ +0; +var NoLane = +/* */ +0; +var SyncHydrationLane = +/* */ +1; +var SyncLane = +/* */ +2; +var SyncLaneIndex = 1; +var InputContinuousHydrationLane = +/* */ +4; +var InputContinuousLane = +/* */ +8; +var DefaultHydrationLane = +/* */ +16; +var DefaultLane = +/* */ +32; +var SyncUpdateLanes = enableUnifiedSyncLane ? SyncLane | InputContinuousLane | DefaultLane : SyncLane; +var TransitionHydrationLane = +/* */ +64; +var TransitionLanes = +/* */ +4194176; +var TransitionLane1 = +/* */ +128; +var TransitionLane2 = +/* */ +256; +var TransitionLane3 = +/* */ +512; +var TransitionLane4 = +/* */ +1024; +var TransitionLane5 = +/* */ +2048; +var TransitionLane6 = +/* */ +4096; +var TransitionLane7 = +/* */ +8192; +var TransitionLane8 = +/* */ +16384; +var TransitionLane9 = +/* */ +32768; +var TransitionLane10 = +/* */ +65536; +var TransitionLane11 = +/* */ +131072; +var TransitionLane12 = +/* */ +262144; +var TransitionLane13 = +/* */ +524288; +var TransitionLane14 = +/* */ +1048576; +var TransitionLane15 = +/* */ +2097152; +var RetryLanes = +/* */ +62914560; +var RetryLane1 = +/* */ +4194304; +var RetryLane2 = +/* */ +8388608; +var RetryLane3 = +/* */ +16777216; +var RetryLane4 = +/* */ +33554432; +var SomeRetryLane = RetryLane1; +var SelectiveHydrationLane = +/* */ +67108864; +var NonIdleLanes = +/* */ +134217727; +var IdleHydrationLane = +/* */ +134217728; +var IdleLane = +/* */ +268435456; +var OffscreenLane = +/* */ +536870912; +var DeferredLane = +/* */ +1073741824; // Any lane that might schedule an update. This is used to detect infinite +// update loops, so it doesn't include hydration lanes or retries. + +var UpdateLanes = SyncLane | InputContinuousLane | DefaultLane | TransitionLanes; // This function is used for the experimental timeline (react-devtools-timeline) +// It should be kept in sync with the Lanes values above. + +function getLabelForLane(lane) { + { + if (lane & SyncHydrationLane) { + return 'SyncHydrationLane'; + } + + if (lane & SyncLane) { + return 'Sync'; + } + + if (lane & InputContinuousHydrationLane) { + return 'InputContinuousHydration'; + } + + if (lane & InputContinuousLane) { + return 'InputContinuous'; + } + + if (lane & DefaultHydrationLane) { + return 'DefaultHydration'; + } + + if (lane & DefaultLane) { + return 'Default'; + } + + if (lane & TransitionHydrationLane) { + return 'TransitionHydration'; + } + + if (lane & TransitionLanes) { + return 'Transition'; + } + + if (lane & RetryLanes) { + return 'Retry'; + } + + if (lane & SelectiveHydrationLane) { + return 'SelectiveHydration'; + } + + if (lane & IdleHydrationLane) { + return 'IdleHydration'; + } + + if (lane & IdleLane) { + return 'Idle'; + } + + if (lane & OffscreenLane) { + return 'Offscreen'; + } + + if (lane & DeferredLane) { + return 'Deferred'; + } + } +} +var NoTimestamp = -1; +var nextTransitionLane = TransitionLane1; +var nextRetryLane = RetryLane1; + +function getHighestPriorityLanes(lanes) { + if (enableUnifiedSyncLane) { + var pendingSyncLanes = lanes & SyncUpdateLanes; + + if (pendingSyncLanes !== 0) { + return pendingSyncLanes; + } + } + + switch (getHighestPriorityLane(lanes)) { + case SyncHydrationLane: + return SyncHydrationLane; + + case SyncLane: + return SyncLane; + + case InputContinuousHydrationLane: + return InputContinuousHydrationLane; + + case InputContinuousLane: + return InputContinuousLane; + + case DefaultHydrationLane: + return DefaultHydrationLane; + + case DefaultLane: + return DefaultLane; + + case TransitionHydrationLane: + return TransitionHydrationLane; + + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + return lanes & TransitionLanes; + + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + return lanes & RetryLanes; + + case SelectiveHydrationLane: + return SelectiveHydrationLane; + + case IdleHydrationLane: + return IdleHydrationLane; + + case IdleLane: + return IdleLane; + + case OffscreenLane: + return OffscreenLane; + + case DeferredLane: + // This shouldn't be reachable because deferred work is always entangled + // with something else. + return NoLanes; + + default: { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markRenderScheduled === "function" - ) { - injectedProfilingHooks.markRenderScheduled(lane); - } + error('Should have found matching lanes. This is a bug in React.'); + } // This shouldn't be reachable, but as a fallback, return the entire bitmask. + + + return lanes; + } +} + +function getNextLanes(root, wipLanes) { + // Early bailout if there's no pending work left. + var pendingLanes = root.pendingLanes; + + if (pendingLanes === NoLanes) { + return NoLanes; + } + + var nextLanes = NoLanes; + var suspendedLanes = root.suspendedLanes; + var pingedLanes = root.pingedLanes; // Do not work on any idle work until all the non-idle work has finished, + // even if the work is suspended. + + var nonIdlePendingLanes = pendingLanes & NonIdleLanes; + + if (nonIdlePendingLanes !== NoLanes) { + var nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes; + + if (nonIdleUnblockedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes); + } else { + var nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes; + + if (nonIdlePingedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(nonIdlePingedLanes); } } - function markForceUpdateScheduled(fiber, lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markForceUpdateScheduled === "function" - ) { - injectedProfilingHooks.markForceUpdateScheduled(fiber, lane); - } + } else { + // The only remaining work is Idle. + var unblockedLanes = pendingLanes & ~suspendedLanes; + + if (unblockedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(unblockedLanes); + } else { + if (pingedLanes !== NoLanes) { + nextLanes = getHighestPriorityLanes(pingedLanes); } } - function markStateUpdateScheduled(fiber, lane) { - { - if ( - injectedProfilingHooks !== null && - typeof injectedProfilingHooks.markStateUpdateScheduled === "function" - ) { - injectedProfilingHooks.markStateUpdateScheduled(fiber, lane); - } - } - } - - var NoMode = - /* */ - 0; // TODO: Remove ConcurrentMode by reading from the root tag instead - - var ConcurrentMode = - /* */ - 1; - var ProfileMode = - /* */ - 2; - var StrictLegacyMode = - /* */ - 8; - var StrictEffectsMode = - /* */ - 16; - var NoStrictPassiveEffectsMode = - /* */ - 64; - - // TODO: This is pretty well supported by browsers. Maybe we can drop it. - var clz32 = Math.clz32 ? Math.clz32 : clz32Fallback; // Count leading zeros. - // Based on: - // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32 - - var log = Math.log; - var LN2 = Math.LN2; - - function clz32Fallback(x) { - var asUint = x >>> 0; - - if (asUint === 0) { - return 32; - } - - return (31 - ((log(asUint) / LN2) | 0)) | 0; - } - - // If those values are changed that package should be rebuilt and redeployed. - - var TotalLanes = 31; - var NoLanes = - /* */ - 0; - var NoLane = - /* */ - 0; - var SyncHydrationLane = - /* */ - 1; - var SyncLane = - /* */ - 2; - var SyncLaneIndex = 1; - var InputContinuousHydrationLane = - /* */ - 4; - var InputContinuousLane = - /* */ - 8; - var DefaultHydrationLane = - /* */ - 16; - var DefaultLane = - /* */ - 32; - var SyncUpdateLanes = enableUnifiedSyncLane - ? SyncLane | InputContinuousLane | DefaultLane - : SyncLane; - var TransitionHydrationLane = - /* */ - 64; - var TransitionLanes = - /* */ - 4194176; - var TransitionLane1 = - /* */ - 128; - var TransitionLane2 = - /* */ - 256; - var TransitionLane3 = - /* */ - 512; - var TransitionLane4 = - /* */ - 1024; - var TransitionLane5 = - /* */ - 2048; - var TransitionLane6 = - /* */ - 4096; - var TransitionLane7 = - /* */ - 8192; - var TransitionLane8 = - /* */ - 16384; - var TransitionLane9 = - /* */ - 32768; - var TransitionLane10 = - /* */ - 65536; - var TransitionLane11 = - /* */ - 131072; - var TransitionLane12 = - /* */ - 262144; - var TransitionLane13 = - /* */ - 524288; - var TransitionLane14 = - /* */ - 1048576; - var TransitionLane15 = - /* */ - 2097152; - var RetryLanes = - /* */ - 62914560; - var RetryLane1 = - /* */ - 4194304; - var RetryLane2 = - /* */ - 8388608; - var RetryLane3 = - /* */ - 16777216; - var RetryLane4 = - /* */ - 33554432; - var SomeRetryLane = RetryLane1; - var SelectiveHydrationLane = - /* */ - 67108864; - var NonIdleLanes = - /* */ - 134217727; - var IdleHydrationLane = - /* */ - 134217728; - var IdleLane = - /* */ - 268435456; - var OffscreenLane = - /* */ - 536870912; - var DeferredLane = - /* */ - 1073741824; // Any lane that might schedule an update. This is used to detect infinite - // update loops, so it doesn't include hydration lanes or retries. - - var UpdateLanes = - SyncLane | InputContinuousLane | DefaultLane | TransitionLanes; // This function is used for the experimental timeline (react-devtools-timeline) - // It should be kept in sync with the Lanes values above. - - function getLabelForLane(lane) { - { - if (lane & SyncHydrationLane) { - return "SyncHydrationLane"; - } + } - if (lane & SyncLane) { - return "Sync"; - } + if (nextLanes === NoLanes) { + // This should only be reachable if we're suspended + // TODO: Consider warning in this path if a fallback timer is not scheduled. + return NoLanes; + } // If we're already in the middle of a render, switching lanes will interrupt + // it and we'll lose our progress. We should only do this if the new lanes are + // higher priority. - if (lane & InputContinuousHydrationLane) { - return "InputContinuousHydration"; - } - if (lane & InputContinuousLane) { - return "InputContinuous"; - } + if (wipLanes !== NoLanes && wipLanes !== nextLanes && // If we already suspended with a delay, then interrupting is fine. Don't + // bother waiting until the root is complete. + (wipLanes & suspendedLanes) === NoLanes) { + var nextLane = getHighestPriorityLane(nextLanes); + var wipLane = getHighestPriorityLane(wipLanes); - if (lane & DefaultHydrationLane) { - return "DefaultHydration"; - } + if ( // Tests whether the next lane is equal or lower priority than the wip + // one. This works because the bits decrease in priority as you go left. + nextLane >= wipLane || // Default priority updates should not interrupt transition updates. The + // only difference between default updates and transition updates is that + // default updates do not support refresh transitions. + nextLane === DefaultLane && (wipLane & TransitionLanes) !== NoLanes) { + // Keep working on the existing in-progress tree. Do not interrupt. + return wipLanes; + } + } - if (lane & DefaultLane) { - return "Default"; - } + return nextLanes; +} +function getEntangledLanes(root, renderLanes) { + var entangledLanes = renderLanes; + + if ((entangledLanes & InputContinuousLane) !== NoLanes) { + // When updates are sync by default, we entangle continuous priority updates + // and default updates, so they render in the same batch. The only reason + // they use separate lanes is because continuous updates should interrupt + // transitions, but default updates should not. + entangledLanes |= entangledLanes & DefaultLane; + } // Check for entangled lanes and add them to the batch. + // + // A lane is said to be entangled with another when it's not allowed to render + // in a batch that does not also include the other lane. Typically we do this + // when multiple updates have the same source, and we only want to respond to + // the most recent event from that source. + // + // Note that we apply entanglements *after* checking for partial work above. + // This means that if a lane is entangled during an interleaved event while + // it's already rendering, we won't interrupt it. This is intentional, since + // entanglement is usually "best effort": we'll try our best to render the + // lanes in the same batch, but it's not worth throwing out partially + // completed work in order to do it. + // TODO: Reconsider this. The counter-argument is that the partial work + // represents an intermediate state, which we don't want to show to the user. + // And by spending extra time finishing it, we're increasing the amount of + // time it takes to show the final state, which is what they are actually + // waiting for. + // + // For those exceptions where entanglement is semantically important, + // we should ensure that there is no partial work at the + // time we apply the entanglement. + + + var allEntangledLanes = root.entangledLanes; + + if (allEntangledLanes !== NoLanes) { + var entanglements = root.entanglements; + var lanes = entangledLanes & allEntangledLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + entangledLanes |= entanglements[index]; + lanes &= ~lane; + } + } + + return entangledLanes; +} - if (lane & TransitionHydrationLane) { - return "TransitionHydration"; - } +function computeExpirationTime(lane, currentTime) { + switch (lane) { + case SyncHydrationLane: + case SyncLane: + case InputContinuousHydrationLane: + case InputContinuousLane: + // User interactions should expire slightly more quickly. + // + // NOTE: This is set to the corresponding constant as in Scheduler.js. + // When we made it larger, a product metric in www regressed, suggesting + // there's a user interaction that's being starved by a series of + // synchronous updates. If that theory is correct, the proper solution is + // to fix the starvation. However, this scenario supports the idea that + // expiration times are an important safeguard when starvation + // does happen. + return currentTime + syncLaneExpirationMs; + + case DefaultHydrationLane: + case DefaultLane: + case TransitionHydrationLane: + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + return currentTime + transitionLaneExpirationMs; + + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + // TODO: Retries should be allowed to expire if they are CPU bound for + // too long, but when I made this change it caused a spike in browser + // crashes. There must be some other underlying bug; not super urgent but + // ideally should figure out why and fix it. Unfortunately we don't have + // a repro for the crashes, only detected via production metrics. + return NoTimestamp; + + case SelectiveHydrationLane: + case IdleHydrationLane: + case IdleLane: + case OffscreenLane: + case DeferredLane: + // Anything idle priority or lower should never expire. + return NoTimestamp; + + default: + { + error('Should have found matching lanes. This is a bug in React.'); + } + + return NoTimestamp; + } +} - if (lane & TransitionLanes) { - return "Transition"; - } +function markStarvedLanesAsExpired(root, currentTime) { + // TODO: This gets called every time we yield. We can optimize by storing + // the earliest expiration time on the root. Then use that to quickly bail out + // of this function. + var pendingLanes = root.pendingLanes; + var suspendedLanes = root.suspendedLanes; + var pingedLanes = root.pingedLanes; + var expirationTimes = root.expirationTimes; // Iterate through the pending lanes and check if we've reached their + // expiration time. If so, we'll assume the update is being starved and mark + // it as expired to force it to finish. + // TODO: We should be able to replace this with upgradePendingLanesToSync + // + // We exclude retry lanes because those must always be time sliced, in order + // to unwrap uncached promises. + // TODO: Write a test for this + + var lanes = pendingLanes & ~RetryLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + var expirationTime = expirationTimes[index]; + + if (expirationTime === NoTimestamp) { + // Found a pending lane with no expiration time. If it's not suspended, or + // if it's pinged, assume it's CPU-bound. Compute a new expiration time + // using the current time. + if ((lane & suspendedLanes) === NoLanes || (lane & pingedLanes) !== NoLanes) { + // Assumes timestamps are monotonically increasing. + expirationTimes[index] = computeExpirationTime(lane, currentTime); + } + } else if (expirationTime <= currentTime) { + // This lane expired + root.expiredLanes |= lane; + } + + lanes &= ~lane; + } +} // This returns the highest priority pending lanes regardless of whether they +function getLanesToRetrySynchronouslyOnError(root, originallyAttemptedLanes) { + if (root.errorRecoveryDisabledLanes & originallyAttemptedLanes) { + // The error recovery mechanism is disabled until these lanes are cleared. + return NoLanes; + } + + var everythingButOffscreen = root.pendingLanes & ~OffscreenLane; + + if (everythingButOffscreen !== NoLanes) { + return everythingButOffscreen; + } + + if (everythingButOffscreen & OffscreenLane) { + return OffscreenLane; + } + + return NoLanes; +} +function includesSyncLane(lanes) { + return (lanes & (SyncLane | SyncHydrationLane)) !== NoLanes; +} +function includesNonIdleWork(lanes) { + return (lanes & NonIdleLanes) !== NoLanes; +} +function includesOnlyRetries(lanes) { + return (lanes & RetryLanes) === lanes; +} +function includesOnlyNonUrgentLanes(lanes) { + // TODO: Should hydration lanes be included here? This function is only + // used in `updateDeferredValueImpl`. + var UrgentLanes = SyncLane | InputContinuousLane | DefaultLane; + return (lanes & UrgentLanes) === NoLanes; +} +function includesOnlyTransitions(lanes) { + return (lanes & TransitionLanes) === lanes; +} +function includesBlockingLane(root, lanes) { - if (lane & RetryLanes) { - return "Retry"; - } + var SyncDefaultLanes = InputContinuousHydrationLane | InputContinuousLane | DefaultHydrationLane | DefaultLane; + return (lanes & SyncDefaultLanes) !== NoLanes; +} +function includesExpiredLane(root, lanes) { + // This is a separate check from includesBlockingLane because a lane can + // expire after a render has already started. + return (lanes & root.expiredLanes) !== NoLanes; +} +function isTransitionLane(lane) { + return (lane & TransitionLanes) !== NoLanes; +} +function claimNextTransitionLane() { + // Cycle through the lanes, assigning each new transition to the next lane. + // In most cases, this means every transition gets its own lane, until we + // run out of lanes and cycle back to the beginning. + var lane = nextTransitionLane; + nextTransitionLane <<= 1; + + if ((nextTransitionLane & TransitionLanes) === NoLanes) { + nextTransitionLane = TransitionLane1; + } + + return lane; +} +function claimNextRetryLane() { + var lane = nextRetryLane; + nextRetryLane <<= 1; - if (lane & SelectiveHydrationLane) { - return "SelectiveHydration"; - } + if ((nextRetryLane & RetryLanes) === NoLanes) { + nextRetryLane = RetryLane1; + } - if (lane & IdleHydrationLane) { - return "IdleHydration"; - } + return lane; +} +function getHighestPriorityLane(lanes) { + return lanes & -lanes; +} +function pickArbitraryLane(lanes) { + // This wrapper function gets inlined. Only exists so to communicate that it + // doesn't matter which bit is selected; you can pick any bit without + // affecting the algorithms where its used. Here I'm using + // getHighestPriorityLane because it requires the fewest operations. + return getHighestPriorityLane(lanes); +} - if (lane & IdleLane) { - return "Idle"; - } +function pickArbitraryLaneIndex(lanes) { + return 31 - clz32(lanes); +} - if (lane & OffscreenLane) { - return "Offscreen"; - } +function laneToIndex(lane) { + return pickArbitraryLaneIndex(lane); +} + +function includesSomeLane(a, b) { + return (a & b) !== NoLanes; +} +function isSubsetOfLanes(set, subset) { + return (set & subset) === subset; +} +function mergeLanes(a, b) { + return a | b; +} +function removeLanes(set, subset) { + return set & ~subset; +} +function intersectLanes(a, b) { + return a & b; +} // Seems redundant, but it changes the type from a single lane (used for +// updates) to a group of lanes (used for flushing work). + +function laneToLanes(lane) { + return lane; +} +function createLaneMap(initial) { + // Intentionally pushing one by one. + // https://v8.dev/blog/elements-kinds#avoid-creating-holes + var laneMap = []; + + for (var i = 0; i < TotalLanes; i++) { + laneMap.push(initial); + } - if (lane & DeferredLane) { - return "Deferred"; + return laneMap; +} +function markRootUpdated$1(root, updateLane) { + root.pendingLanes |= updateLane; // If there are any suspended transitions, it's possible this new update + // could unblock them. Clear the suspended lanes so that we can try rendering + // them again. + // + // TODO: We really only need to unsuspend only lanes that are in the + // `subtreeLanes` of the updated fiber, or the update lanes of the return + // path. This would exclude suspended updates in an unrelated sibling tree, + // since there's no way for this update to unblock it. + // + // We don't do this if the incoming update is idle, because we never process + // idle updates until after all the regular updates have finished; there's no + // way it could unblock a transition. + + if (updateLane !== IdleLane) { + root.suspendedLanes = NoLanes; + root.pingedLanes = NoLanes; + } +} +function markRootSuspended$1(root, suspendedLanes, spawnedLane) { + root.suspendedLanes |= suspendedLanes; + root.pingedLanes &= ~suspendedLanes; // The suspended lanes are no longer CPU-bound. Clear their expiration times. + + var expirationTimes = root.expirationTimes; + var lanes = suspendedLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + expirationTimes[index] = NoTimestamp; + lanes &= ~lane; + } + + if (spawnedLane !== NoLane) { + markSpawnedDeferredLane(root, spawnedLane, suspendedLanes); + } +} +function markRootPinged$1(root, pingedLanes) { + root.pingedLanes |= root.suspendedLanes & pingedLanes; +} +function markRootFinished(root, remainingLanes, spawnedLane) { + var noLongerPendingLanes = root.pendingLanes & ~remainingLanes; + root.pendingLanes = remainingLanes; // Let's try everything again + + root.suspendedLanes = NoLanes; + root.pingedLanes = NoLanes; + root.expiredLanes &= remainingLanes; + root.entangledLanes &= remainingLanes; + root.errorRecoveryDisabledLanes &= remainingLanes; + root.shellSuspendCounter = 0; + var entanglements = root.entanglements; + var expirationTimes = root.expirationTimes; + var hiddenUpdates = root.hiddenUpdates; // Clear the lanes that no longer have pending work + + var lanes = noLongerPendingLanes; + + while (lanes > 0) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + entanglements[index] = NoLanes; + expirationTimes[index] = NoTimestamp; + var hiddenUpdatesForLane = hiddenUpdates[index]; + + if (hiddenUpdatesForLane !== null) { + hiddenUpdates[index] = null; // "Hidden" updates are updates that were made to a hidden component. They + // have special logic associated with them because they may be entangled + // with updates that occur outside that tree. But once the outer tree + // commits, they behave like regular updates. + + for (var i = 0; i < hiddenUpdatesForLane.length; i++) { + var update = hiddenUpdatesForLane[i]; + + if (update !== null) { + update.lane &= ~OffscreenLane; } } } - var NoTimestamp = -1; - var nextTransitionLane = TransitionLane1; - var nextRetryLane = RetryLane1; - function getHighestPriorityLanes(lanes) { - if (enableUnifiedSyncLane) { - var pendingSyncLanes = lanes & SyncUpdateLanes; + lanes &= ~lane; + } + + if (spawnedLane !== NoLane) { + markSpawnedDeferredLane(root, spawnedLane, // This render finished successfully without suspending, so we don't need + // to entangle the spawned task with the parent task. + NoLanes); + } +} + +function markSpawnedDeferredLane(root, spawnedLane, entangledLanes) { + // This render spawned a deferred task. Mark it as pending. + root.pendingLanes |= spawnedLane; + root.suspendedLanes &= ~spawnedLane; // Entangle the spawned lane with the DeferredLane bit so that we know it + // was the result of another render. This lets us avoid a useDeferredValue + // waterfall — only the first level will defer. + + var spawnedLaneIndex = laneToIndex(spawnedLane); + root.entangledLanes |= spawnedLane; + root.entanglements[spawnedLaneIndex] |= DeferredLane | // If the parent render task suspended, we must also entangle those lanes + // with the spawned task, so that the deferred task includes all the same + // updates that the parent task did. We can exclude any lane that is not + // used for updates (e.g. Offscreen). + entangledLanes & UpdateLanes; +} + +function markRootEntangled(root, entangledLanes) { + // In addition to entangling each of the given lanes with each other, we also + // have to consider _transitive_ entanglements. For each lane that is already + // entangled with *any* of the given lanes, that lane is now transitively + // entangled with *all* the given lanes. + // + // Translated: If C is entangled with A, then entangling A with B also + // entangles C with B. + // + // If this is hard to grasp, it might help to intentionally break this + // function and look at the tests that fail in ReactTransition-test.js. Try + // commenting out one of the conditions below. + var rootEntangledLanes = root.entangledLanes |= entangledLanes; + var entanglements = root.entanglements; + var lanes = rootEntangledLanes; + + while (lanes) { + var index = pickArbitraryLaneIndex(lanes); + var lane = 1 << index; + + if ( // Is this one of the newly entangled lanes? + lane & entangledLanes | // Is this lane transitively entangled with the newly entangled lanes? + entanglements[index] & entangledLanes) { + entanglements[index] |= entangledLanes; + } + + lanes &= ~lane; + } +} +function upgradePendingLaneToSync(root, lane) { + // Since we're upgrading the priority of the given lane, there is now pending + // sync work. + root.pendingLanes |= SyncLane; // Entangle the sync lane with the lane we're upgrading. This means SyncLane + // will not be allowed to finish without also finishing the given lane. + + root.entangledLanes |= SyncLane; + root.entanglements[SyncLaneIndex] |= lane; +} +function markHiddenUpdate(root, update, lane) { + var index = laneToIndex(lane); + var hiddenUpdates = root.hiddenUpdates; + var hiddenUpdatesForLane = hiddenUpdates[index]; + + if (hiddenUpdatesForLane === null) { + hiddenUpdates[index] = [update]; + } else { + hiddenUpdatesForLane.push(update); + } + + update.lane = lane | OffscreenLane; +} +function getBumpedLaneForHydration(root, renderLanes) { + var renderLane = getHighestPriorityLane(renderLanes); + var lane; + + if (enableUnifiedSyncLane && (renderLane & SyncUpdateLanes) !== NoLane) { + lane = SyncHydrationLane; + } else { + switch (renderLane) { + case SyncLane: + lane = SyncHydrationLane; + break; + + case InputContinuousLane: + lane = InputContinuousHydrationLane; + break; + + case DefaultLane: + lane = DefaultHydrationLane; + break; + + case TransitionLane1: + case TransitionLane2: + case TransitionLane3: + case TransitionLane4: + case TransitionLane5: + case TransitionLane6: + case TransitionLane7: + case TransitionLane8: + case TransitionLane9: + case TransitionLane10: + case TransitionLane11: + case TransitionLane12: + case TransitionLane13: + case TransitionLane14: + case TransitionLane15: + case RetryLane1: + case RetryLane2: + case RetryLane3: + case RetryLane4: + lane = TransitionHydrationLane; + break; + + case IdleLane: + lane = IdleHydrationLane; + break; + + default: + // Everything else is already either a hydration lane, or shouldn't + // be retried at a hydration lane. + lane = NoLane; + break; + } + } // Check if the lane we chose is suspended. If so, that indicates that we + // already attempted and failed to hydrate at that level. Also check if we're + // already rendering that lane, which is rare but could happen. + + + if ((lane & (root.suspendedLanes | renderLanes)) !== NoLane) { + // Give up trying to hydrate and fall back to client render. + return NoLane; + } + + return lane; +} +function addFiberToLanesMap(root, fiber, lanes) { + + if (!isDevToolsPresent) { + return; + } + + var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; + + while (lanes > 0) { + var index = laneToIndex(lanes); + var lane = 1 << index; + var updaters = pendingUpdatersLaneMap[index]; + updaters.add(fiber); + lanes &= ~lane; + } +} +function movePendingFibersToMemoized(root, lanes) { + + if (!isDevToolsPresent) { + return; + } - if (pendingSyncLanes !== 0) { - return pendingSyncLanes; + var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; + var memoizedUpdaters = root.memoizedUpdaters; + + while (lanes > 0) { + var index = laneToIndex(lanes); + var lane = 1 << index; + var updaters = pendingUpdatersLaneMap[index]; + + if (updaters.size > 0) { + updaters.forEach(function (fiber) { + var alternate = fiber.alternate; + + if (alternate === null || !memoizedUpdaters.has(alternate)) { + memoizedUpdaters.add(fiber); } - } + }); + updaters.clear(); + } + + lanes &= ~lane; + } +} +function getTransitionsForLanes(root, lanes) { + { + return null; + } +} - switch (getHighestPriorityLane(lanes)) { - case SyncHydrationLane: - return SyncHydrationLane; +var NoEventPriority = NoLane; +var DiscreteEventPriority = SyncLane; +var ContinuousEventPriority = InputContinuousLane; +var DefaultEventPriority = DefaultLane; +var IdleEventPriority = IdleLane; +function higherEventPriority(a, b) { + return a !== 0 && a < b ? a : b; +} +function lowerEventPriority(a, b) { + return a === 0 || a > b ? a : b; +} +function isHigherEventPriority(a, b) { + return a !== 0 && a < b; +} +function eventPriorityToLane(updatePriority) { + return updatePriority; +} +function lanesToEventPriority(lanes) { + var lane = getHighestPriorityLane(lanes); - case SyncLane: - return SyncLane; + if (!isHigherEventPriority(DiscreteEventPriority, lane)) { + return DiscreteEventPriority; + } - case InputContinuousHydrationLane: - return InputContinuousHydrationLane; + if (!isHigherEventPriority(ContinuousEventPriority, lane)) { + return ContinuousEventPriority; + } - case InputContinuousLane: - return InputContinuousLane; + if (includesNonIdleWork(lane)) { + return DefaultEventPriority; + } - case DefaultHydrationLane: - return DefaultHydrationLane; + return IdleEventPriority; +} - case DefaultLane: - return DefaultLane; +// Renderers that don't support hydration +// can re-export everything from this module. +function shim$1() { + throw new Error('The current renderer does not support hydration. ' + 'This error is likely caused by a bug in React. ' + 'Please file an issue.'); +} // Hydration (when unsupported) + + +var supportsHydration = false; +var isSuspenseInstancePending = shim$1; +var isSuspenseInstanceFallback = shim$1; +var getSuspenseInstanceFallbackErrorDetails = shim$1; +var registerSuspenseInstanceRetry = shim$1; +var clearSuspenseBoundary = shim$1; +var clearSuspenseBoundaryFromContainer = shim$1; + +// Renderers that don't support hydration +// can re-export everything from this module. +function shim() { + throw new Error('The current renderer does not support Resources. ' + 'This error is likely caused by a bug in React. ' + 'Please file an issue.'); +} // Resources (when unsupported) +var suspendResource = shim; + +var getViewConfigForType = ReactNativePrivateInterface.ReactNativeViewConfigRegistry.get; // Unused +// Unused +// Counter for uniquely identifying views. +// % 10 === 1 means it is a rootTag. +// % 2 === 0 means it is a Fabric tag. + +var nextReactTag = 3; + +function allocateTag() { + var tag = nextReactTag; + + if (tag % 10 === 1) { + tag += 2; + } + + nextReactTag = tag + 2; + return tag; +} - case TransitionHydrationLane: - return TransitionHydrationLane; +function recursivelyUncacheFiberNode(node) { + if (typeof node === 'number') { + // Leaf node (eg text) + uncacheFiberNode(node); + } else { + uncacheFiberNode(node._nativeTag); - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - return lanes & TransitionLanes; + node._children.forEach(recursivelyUncacheFiberNode); + } +} +function appendInitialChild(parentInstance, child) { + parentInstance._children.push(child); +} +function createInstance(type, props, rootContainerInstance, hostContext, internalInstanceHandle) { + var tag = allocateTag(); + var viewConfig = getViewConfigForType(type); + + { + for (var key in viewConfig.validAttributes) { + if (props.hasOwnProperty(key)) { + ReactNativePrivateInterface.deepFreezeAndThrowOnMutationInDev(props[key]); + } + } + } + + var updatePayload = create(props, viewConfig.validAttributes); + ReactNativePrivateInterface.UIManager.createView(tag, // reactTag + viewConfig.uiViewClassName, // viewName + rootContainerInstance, // rootTag + updatePayload // props + ); + var component = new ReactNativeFiberHostComponent(tag, viewConfig, internalInstanceHandle); + precacheFiberNode(internalInstanceHandle, tag); + updateFiberProps(tag, props); // Not sure how to avoid this cast. Flow is okay if the component is defined + // in the same file but if it's external it can't see the types. + + return component; +} +function createTextInstance(text, rootContainerInstance, hostContext, internalInstanceHandle) { + if (!hostContext.isInAParentText) { + throw new Error('Text strings must be rendered within a component.'); + } + + var tag = allocateTag(); + ReactNativePrivateInterface.UIManager.createView(tag, // reactTag + 'RCTRawText', // viewName + rootContainerInstance, // rootTag + { + text: text + } // props + ); + precacheFiberNode(internalInstanceHandle, tag); + return tag; +} +function finalizeInitialChildren(parentInstance, type, props, hostContext) { + // Don't send a no-op message over the bridge. + if (parentInstance._children.length === 0) { + return false; + } // Map from child objects to native tags. + // Either way we need to pass a copy of the Array to prevent it from being frozen. + + + var nativeTags = parentInstance._children.map(function (child) { + return typeof child === 'number' ? child // Leaf node (eg text) + : child._nativeTag; + }); + + ReactNativePrivateInterface.UIManager.setChildren(parentInstance._nativeTag, // containerTag + nativeTags // reactTags + ); + return false; +} +function getRootHostContext(rootContainerInstance) { + return { + isInAParentText: false + }; +} +function getChildHostContext(parentHostContext, type) { + var prevIsInAParentText = parentHostContext.isInAParentText; + var isInAParentText = type === 'AndroidTextInput' || // Android + type === 'RCTMultilineTextInputView' || // iOS + type === 'RCTSinglelineTextInputView' || // iOS + type === 'RCTText' || type === 'RCTVirtualText'; + + if (prevIsInAParentText !== isInAParentText) { + return { + isInAParentText: isInAParentText + }; + } else { + return parentHostContext; + } +} +function getPublicInstance(instance) { + // $FlowExpectedError[prop-missing] For compatibility with Fabric + if (instance.canonical != null && instance.canonical.publicInstance != null) { + // $FlowFixMe[incompatible-return] + return instance.canonical.publicInstance; + } + + return instance; +} +var scheduleTimeout = setTimeout; +var cancelTimeout = clearTimeout; +var noTimeout = -1; +function shouldSetTextContent(type, props) { + // TODO (bvaughn) Revisit this decision. + // Always returning false simplifies the createInstance() implementation, + // But creates an additional child Fiber for raw text children. + // No additional native views are created though. + // It's not clear to me which is better so I'm deferring for now. + // More context @ github.com/facebook/react/pull/8560#discussion_r92111303 + return false; +} +var currentUpdatePriority = NoEventPriority; +function setCurrentUpdatePriority(newPriority) { + currentUpdatePriority = newPriority; +} +function getCurrentUpdatePriority() { + return currentUpdatePriority; +} +function resolveUpdatePriority() { + if (currentUpdatePriority !== NoEventPriority) { + return currentUpdatePriority; + } - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - return lanes & RetryLanes; + return DefaultEventPriority; +} +function shouldAttemptEagerTransition() { + return false; +} // ------------------- +function appendChild(parentInstance, child) { + var childTag = typeof child === 'number' ? child : child._nativeTag; + var children = parentInstance._children; + var index = children.indexOf(child); + + if (index >= 0) { + children.splice(index, 1); + children.push(child); + ReactNativePrivateInterface.UIManager.manageChildren(parentInstance._nativeTag, // containerTag + [index], // moveFromIndices + [children.length - 1], // moveToIndices + [], // addChildReactTags + [], // addAtIndices + [] // removeAtIndices + ); + } else { + children.push(child); + ReactNativePrivateInterface.UIManager.manageChildren(parentInstance._nativeTag, // containerTag + [], // moveFromIndices + [], // moveToIndices + [childTag], // addChildReactTags + [children.length - 1], // addAtIndices + [] // removeAtIndices + ); + } +} +function appendChildToContainer(parentInstance, child) { + var childTag = typeof child === 'number' ? child : child._nativeTag; + ReactNativePrivateInterface.UIManager.setChildren(parentInstance, // containerTag + [childTag] // reactTags + ); +} +function commitTextUpdate(textInstance, oldText, newText) { + ReactNativePrivateInterface.UIManager.updateView(textInstance, // reactTag + 'RCTRawText', // viewName + { + text: newText + } // props + ); +} +function commitMount(instance, type, newProps, internalInstanceHandle) {// Noop +} +function commitUpdate(instance, updatePayloadTODO, type, oldProps, newProps, internalInstanceHandle) { + var viewConfig = instance.viewConfig; + updateFiberProps(instance._nativeTag, newProps); + var updatePayload = diff(oldProps, newProps, viewConfig.validAttributes); // Avoid the overhead of bridge calls if there's no update. + // This is an expensive no-op for Android, and causes an unnecessary + // view invalidation for certain components (eg RCTTextInput) on iOS. + + if (updatePayload != null) { + ReactNativePrivateInterface.UIManager.updateView(instance._nativeTag, // reactTag + viewConfig.uiViewClassName, // viewName + updatePayload // props + ); + } +} +function insertBefore(parentInstance, child, beforeChild) { + var children = parentInstance._children; + var index = children.indexOf(child); // Move existing child or add new child? + + if (index >= 0) { + children.splice(index, 1); + var beforeChildIndex = children.indexOf(beforeChild); + children.splice(beforeChildIndex, 0, child); + ReactNativePrivateInterface.UIManager.manageChildren(parentInstance._nativeTag, // containerID + [index], // moveFromIndices + [beforeChildIndex], // moveToIndices + [], // addChildReactTags + [], // addAtIndices + [] // removeAtIndices + ); + } else { + var _beforeChildIndex = children.indexOf(beforeChild); + + children.splice(_beforeChildIndex, 0, child); + var childTag = typeof child === 'number' ? child : child._nativeTag; + ReactNativePrivateInterface.UIManager.manageChildren(parentInstance._nativeTag, // containerID + [], // moveFromIndices + [], // moveToIndices + [childTag], // addChildReactTags + [_beforeChildIndex], // addAtIndices + [] // removeAtIndices + ); + } +} +function insertInContainerBefore(parentInstance, child, beforeChild) { + // TODO (bvaughn): Remove this check when... + // We create a wrapper object for the container in ReactNative render() + // Or we refactor to remove wrapper objects entirely. + // For more info on pros/cons see PR #8560 description. + if (typeof parentInstance === 'number') { + throw new Error('Container does not support insertBefore operation'); + } +} +function removeChild(parentInstance, child) { + recursivelyUncacheFiberNode(child); + var children = parentInstance._children; + var index = children.indexOf(child); + children.splice(index, 1); + ReactNativePrivateInterface.UIManager.manageChildren(parentInstance._nativeTag, // containerID + [], // moveFromIndices + [], // moveToIndices + [], // addChildReactTags + [], // addAtIndices + [index] // removeAtIndices + ); +} +function removeChildFromContainer(parentInstance, child) { + recursivelyUncacheFiberNode(child); + ReactNativePrivateInterface.UIManager.manageChildren(parentInstance, // containerID + [], // moveFromIndices + [], // moveToIndices + [], // addChildReactTags + [], // addAtIndices + [0] // removeAtIndices + ); +} +function resetTextContent(instance) {// Noop +} +function hideInstance(instance) { + var viewConfig = instance.viewConfig; + var updatePayload = create({ + style: { + display: 'none' + } + }, viewConfig.validAttributes); + ReactNativePrivateInterface.UIManager.updateView(instance._nativeTag, viewConfig.uiViewClassName, updatePayload); +} +function hideTextInstance(textInstance) { + throw new Error('Not yet implemented.'); +} +function unhideInstance(instance, props) { + var viewConfig = instance.viewConfig; + var updatePayload = diff(assign({}, props, { + style: [props.style, { + display: 'none' + }] + }), props, viewConfig.validAttributes); + ReactNativePrivateInterface.UIManager.updateView(instance._nativeTag, viewConfig.uiViewClassName, updatePayload); +} +function unhideTextInstance(textInstance, text) { + throw new Error('Not yet implemented.'); +} +function preloadInstance(type, props) { + // Return true to indicate it's already loaded + return true; +} +function waitForCommitToBeReady() { + return null; +} +var NotPendingTransition = null; - case SelectiveHydrationLane: - return SelectiveHydrationLane; +var valueStack = []; +var fiberStack; - case IdleHydrationLane: - return IdleHydrationLane; +{ + fiberStack = []; +} - case IdleLane: - return IdleLane; +var index = -1; - case OffscreenLane: - return OffscreenLane; +function createCursor(defaultValue) { + return { + current: defaultValue + }; +} - case DeferredLane: - // This shouldn't be reachable because deferred work is always entangled - // with something else. - return NoLanes; +function pop(cursor, fiber) { + if (index < 0) { + { + error('Unexpected pop.'); + } - default: - { - error("Should have found matching lanes. This is a bug in React."); - } // This shouldn't be reachable, but as a fallback, return the entire bitmask. + return; + } - return lanes; - } + { + if (fiber !== fiberStack[index]) { + error('Unexpected Fiber popped.'); } + } - function getNextLanes(root, wipLanes) { - // Early bailout if there's no pending work left. - var pendingLanes = root.pendingLanes; + cursor.current = valueStack[index]; + valueStack[index] = null; - if (pendingLanes === NoLanes) { - return NoLanes; - } + { + fiberStack[index] = null; + } - var nextLanes = NoLanes; - var suspendedLanes = root.suspendedLanes; - var pingedLanes = root.pingedLanes; // Do not work on any idle work until all the non-idle work has finished, - // even if the work is suspended. + index--; +} - var nonIdlePendingLanes = pendingLanes & NonIdleLanes; +function push(cursor, value, fiber) { + index++; + valueStack[index] = cursor.current; - if (nonIdlePendingLanes !== NoLanes) { - var nonIdleUnblockedLanes = nonIdlePendingLanes & ~suspendedLanes; + { + fiberStack[index] = fiber; + } - if (nonIdleUnblockedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(nonIdleUnblockedLanes); - } else { - var nonIdlePingedLanes = nonIdlePendingLanes & pingedLanes; + cursor.current = value; +} - if (nonIdlePingedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(nonIdlePingedLanes); - } - } - } else { - // The only remaining work is Idle. - var unblockedLanes = pendingLanes & ~suspendedLanes; +var warnedAboutMissingGetChildContext; - if (unblockedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(unblockedLanes); - } else { - if (pingedLanes !== NoLanes) { - nextLanes = getHighestPriorityLanes(pingedLanes); - } - } - } +{ + warnedAboutMissingGetChildContext = {}; +} - if (nextLanes === NoLanes) { - // This should only be reachable if we're suspended - // TODO: Consider warning in this path if a fallback timer is not scheduled. - return NoLanes; - } // If we're already in the middle of a render, switching lanes will interrupt - // it and we'll lose our progress. We should only do this if the new lanes are - // higher priority. - - if ( - wipLanes !== NoLanes && - wipLanes !== nextLanes && // If we already suspended with a delay, then interrupting is fine. Don't - // bother waiting until the root is complete. - (wipLanes & suspendedLanes) === NoLanes - ) { - var nextLane = getHighestPriorityLane(nextLanes); - var wipLane = getHighestPriorityLane(wipLanes); - - if ( - // Tests whether the next lane is equal or lower priority than the wip - // one. This works because the bits decrease in priority as you go left. - nextLane >= wipLane || // Default priority updates should not interrupt transition updates. The - // only difference between default updates and transition updates is that - // default updates do not support refresh transitions. - (nextLane === DefaultLane && (wipLane & TransitionLanes) !== NoLanes) - ) { - // Keep working on the existing in-progress tree. Do not interrupt. - return wipLanes; - } - } - - return nextLanes; - } - function getEntangledLanes(root, renderLanes) { - var entangledLanes = renderLanes; - - if ((entangledLanes & InputContinuousLane) !== NoLanes) { - // When updates are sync by default, we entangle continuous priority updates - // and default updates, so they render in the same batch. The only reason - // they use separate lanes is because continuous updates should interrupt - // transitions, but default updates should not. - entangledLanes |= entangledLanes & DefaultLane; - } // Check for entangled lanes and add them to the batch. - // - // A lane is said to be entangled with another when it's not allowed to render - // in a batch that does not also include the other lane. Typically we do this - // when multiple updates have the same source, and we only want to respond to - // the most recent event from that source. - // - // Note that we apply entanglements *after* checking for partial work above. - // This means that if a lane is entangled during an interleaved event while - // it's already rendering, we won't interrupt it. This is intentional, since - // entanglement is usually "best effort": we'll try our best to render the - // lanes in the same batch, but it's not worth throwing out partially - // completed work in order to do it. - // TODO: Reconsider this. The counter-argument is that the partial work - // represents an intermediate state, which we don't want to show to the user. - // And by spending extra time finishing it, we're increasing the amount of - // time it takes to show the final state, which is what they are actually - // waiting for. - // - // For those exceptions where entanglement is semantically important, - // we should ensure that there is no partial work at the - // time we apply the entanglement. +var emptyContextObject = {}; - var allEntangledLanes = root.entangledLanes; +{ + Object.freeze(emptyContextObject); +} // A cursor to the current merged context object on the stack. - if (allEntangledLanes !== NoLanes) { - var entanglements = root.entanglements; - var lanes = entangledLanes & allEntangledLanes; - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - entangledLanes |= entanglements[index]; - lanes &= ~lane; - } - } +var contextStackCursor$1 = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed. - return entangledLanes; - } +var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack. +// We use this to get access to the parent context after we have already +// pushed the next context provider, and now need to merge their contexts. - function computeExpirationTime(lane, currentTime) { - switch (lane) { - case SyncHydrationLane: - case SyncLane: - case InputContinuousHydrationLane: - case InputContinuousLane: - // User interactions should expire slightly more quickly. - // - // NOTE: This is set to the corresponding constant as in Scheduler.js. - // When we made it larger, a product metric in www regressed, suggesting - // there's a user interaction that's being starved by a series of - // synchronous updates. If that theory is correct, the proper solution is - // to fix the starvation. However, this scenario supports the idea that - // expiration times are an important safeguard when starvation - // does happen. - return currentTime + syncLaneExpirationMs; - - case DefaultHydrationLane: - case DefaultLane: - case TransitionHydrationLane: - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - return currentTime + transitionLaneExpirationMs; - - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - // TODO: Retries should be allowed to expire if they are CPU bound for - // too long, but when I made this change it caused a spike in browser - // crashes. There must be some other underlying bug; not super urgent but - // ideally should figure out why and fix it. Unfortunately we don't have - // a repro for the crashes, only detected via production metrics. - return NoTimestamp; - - case SelectiveHydrationLane: - case IdleHydrationLane: - case IdleLane: - case OffscreenLane: - case DeferredLane: - // Anything idle priority or lower should never expire. - return NoTimestamp; - - default: - { - error("Should have found matching lanes. This is a bug in React."); - } +var previousContext = emptyContextObject; - return NoTimestamp; - } +function getUnmaskedContext(workInProgress, Component, didPushOwnContextIfProvider) { + { + if (didPushOwnContextIfProvider && isContextProvider(Component)) { + // If the fiber is a context provider itself, when we read its context + // we may have already pushed its own child context on the stack. A context + // provider should not "see" its own child context. Therefore we read the + // previous (parent) context instead for a context provider. + return previousContext; } - function markStarvedLanesAsExpired(root, currentTime) { - // TODO: This gets called every time we yield. We can optimize by storing - // the earliest expiration time on the root. Then use that to quickly bail out - // of this function. - var pendingLanes = root.pendingLanes; - var suspendedLanes = root.suspendedLanes; - var pingedLanes = root.pingedLanes; - var expirationTimes = root.expirationTimes; // Iterate through the pending lanes and check if we've reached their - // expiration time. If so, we'll assume the update is being starved and mark - // it as expired to force it to finish. - // TODO: We should be able to replace this with upgradePendingLanesToSync - // - // We exclude retry lanes because those must always be time sliced, in order - // to unwrap uncached promises. - // TODO: Write a test for this - - var lanes = pendingLanes & ~RetryLanes; - - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - var expirationTime = expirationTimes[index]; - - if (expirationTime === NoTimestamp) { - // Found a pending lane with no expiration time. If it's not suspended, or - // if it's pinged, assume it's CPU-bound. Compute a new expiration time - // using the current time. - if ( - (lane & suspendedLanes) === NoLanes || - (lane & pingedLanes) !== NoLanes - ) { - // Assumes timestamps are monotonically increasing. - expirationTimes[index] = computeExpirationTime(lane, currentTime); - } - } else if (expirationTime <= currentTime) { - // This lane expired - root.expiredLanes |= lane; - } + return contextStackCursor$1.current; + } +} - lanes &= ~lane; - } - } // This returns the highest priority pending lanes regardless of whether they - function getLanesToRetrySynchronouslyOnError( - root, - originallyAttemptedLanes - ) { - if (root.errorRecoveryDisabledLanes & originallyAttemptedLanes) { - // The error recovery mechanism is disabled until these lanes are cleared. - return NoLanes; - } +function cacheContext(workInProgress, unmaskedContext, maskedContext) { + { + var instance = workInProgress.stateNode; + instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext; + instance.__reactInternalMemoizedMaskedChildContext = maskedContext; + } +} - var everythingButOffscreen = root.pendingLanes & ~OffscreenLane; +function getMaskedContext(workInProgress, unmaskedContext) { + { + var type = workInProgress.type; + var contextTypes = type.contextTypes; - if (everythingButOffscreen !== NoLanes) { - return everythingButOffscreen; - } + if (!contextTypes) { + return emptyContextObject; + } // Avoid recreating masked context unless unmasked context has changed. + // Failing to do this will result in unnecessary calls to componentWillReceiveProps. + // This may trigger infinite loops if componentWillReceiveProps calls setState. - if (everythingButOffscreen & OffscreenLane) { - return OffscreenLane; - } - return NoLanes; - } - function includesSyncLane(lanes) { - return (lanes & (SyncLane | SyncHydrationLane)) !== NoLanes; - } - function includesNonIdleWork(lanes) { - return (lanes & NonIdleLanes) !== NoLanes; - } - function includesOnlyRetries(lanes) { - return (lanes & RetryLanes) === lanes; - } - function includesOnlyNonUrgentLanes(lanes) { - // TODO: Should hydration lanes be included here? This function is only - // used in `updateDeferredValueImpl`. - var UrgentLanes = SyncLane | InputContinuousLane | DefaultLane; - return (lanes & UrgentLanes) === NoLanes; - } - function includesOnlyTransitions(lanes) { - return (lanes & TransitionLanes) === lanes; - } - function includesBlockingLane(root, lanes) { - var SyncDefaultLanes = - InputContinuousHydrationLane | - InputContinuousLane | - DefaultHydrationLane | - DefaultLane; - return (lanes & SyncDefaultLanes) !== NoLanes; - } - function includesExpiredLane(root, lanes) { - // This is a separate check from includesBlockingLane because a lane can - // expire after a render has already started. - return (lanes & root.expiredLanes) !== NoLanes; - } - function isTransitionLane(lane) { - return (lane & TransitionLanes) !== NoLanes; + var instance = workInProgress.stateNode; + + if (instance && instance.__reactInternalMemoizedUnmaskedChildContext === unmaskedContext) { + return instance.__reactInternalMemoizedMaskedChildContext; } - function claimNextTransitionLane() { - // Cycle through the lanes, assigning each new transition to the next lane. - // In most cases, this means every transition gets its own lane, until we - // run out of lanes and cycle back to the beginning. - var lane = nextTransitionLane; - nextTransitionLane <<= 1; - if ((nextTransitionLane & TransitionLanes) === NoLanes) { - nextTransitionLane = TransitionLane1; - } + var context = {}; - return lane; - } - function claimNextRetryLane() { - var lane = nextRetryLane; - nextRetryLane <<= 1; + for (var key in contextTypes) { + context[key] = unmaskedContext[key]; + } // Cache unmasked context so we can avoid recreating masked context unless necessary. + // Context is created before the class component is instantiated so check for instance. - if ((nextRetryLane & RetryLanes) === NoLanes) { - nextRetryLane = RetryLane1; - } - return lane; - } - function getHighestPriorityLane(lanes) { - return lanes & -lanes; - } - function pickArbitraryLane(lanes) { - // This wrapper function gets inlined. Only exists so to communicate that it - // doesn't matter which bit is selected; you can pick any bit without - // affecting the algorithms where its used. Here I'm using - // getHighestPriorityLane because it requires the fewest operations. - return getHighestPriorityLane(lanes); + if (instance) { + cacheContext(workInProgress, unmaskedContext, context); } - function pickArbitraryLaneIndex(lanes) { - return 31 - clz32(lanes); - } + return context; + } +} - function laneToIndex(lane) { - return pickArbitraryLaneIndex(lane); - } +function hasContextChanged() { + { + return didPerformWorkStackCursor.current; + } +} - function includesSomeLane(a, b) { - return (a & b) !== NoLanes; - } - function isSubsetOfLanes(set, subset) { - return (set & subset) === subset; - } - function mergeLanes(a, b) { - return a | b; - } - function removeLanes(set, subset) { - return set & ~subset; - } - function intersectLanes(a, b) { - return a & b; - } // Seems redundant, but it changes the type from a single lane (used for - // updates) to a group of lanes (used for flushing work). +function isContextProvider(type) { + { + var childContextTypes = type.childContextTypes; + return childContextTypes !== null && childContextTypes !== undefined; + } +} - function laneToLanes(lane) { - return lane; - } - function createLaneMap(initial) { - // Intentionally pushing one by one. - // https://v8.dev/blog/elements-kinds#avoid-creating-holes - var laneMap = []; +function popContext(fiber) { + { + pop(didPerformWorkStackCursor, fiber); + pop(contextStackCursor$1, fiber); + } +} - for (var i = 0; i < TotalLanes; i++) { - laneMap.push(initial); - } +function popTopLevelContextObject(fiber) { + { + pop(didPerformWorkStackCursor, fiber); + pop(contextStackCursor$1, fiber); + } +} - return laneMap; +function pushTopLevelContextObject(fiber, context, didChange) { + { + if (contextStackCursor$1.current !== emptyContextObject) { + throw new Error('Unexpected context found on stack. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function markRootUpdated$1(root, updateLane) { - root.pendingLanes |= updateLane; // If there are any suspended transitions, it's possible this new update - // could unblock them. Clear the suspended lanes so that we can try rendering - // them again. - // - // TODO: We really only need to unsuspend only lanes that are in the - // `subtreeLanes` of the updated fiber, or the update lanes of the return - // path. This would exclude suspended updates in an unrelated sibling tree, - // since there's no way for this update to unblock it. - // - // We don't do this if the incoming update is idle, because we never process - // idle updates until after all the regular updates have finished; there's no - // way it could unblock a transition. - if (updateLane !== IdleLane) { - root.suspendedLanes = NoLanes; - root.pingedLanes = NoLanes; - } - } - function markRootSuspended$1(root, suspendedLanes, spawnedLane) { - root.suspendedLanes |= suspendedLanes; - root.pingedLanes &= ~suspendedLanes; // The suspended lanes are no longer CPU-bound. Clear their expiration times. + push(contextStackCursor$1, context, fiber); + push(didPerformWorkStackCursor, didChange, fiber); + } +} - var expirationTimes = root.expirationTimes; - var lanes = suspendedLanes; +function processChildContext(fiber, type, parentContext) { + { + var instance = fiber.stateNode; + var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future. + // It has only been added in Fiber to match the (unintentional) behavior in Stack. - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - expirationTimes[index] = NoTimestamp; - lanes &= ~lane; - } + if (typeof instance.getChildContext !== 'function') { + { + var componentName = getComponentNameFromFiber(fiber) || 'Unknown'; - if (spawnedLane !== NoLane) { - markSpawnedDeferredLane(root, spawnedLane, suspendedLanes); - } - } - function markRootPinged$1(root, pingedLanes) { - root.pingedLanes |= root.suspendedLanes & pingedLanes; - } - function markRootFinished(root, remainingLanes, spawnedLane) { - var noLongerPendingLanes = root.pendingLanes & ~remainingLanes; - root.pendingLanes = remainingLanes; // Let's try everything again + if (!warnedAboutMissingGetChildContext[componentName]) { + warnedAboutMissingGetChildContext[componentName] = true; - root.suspendedLanes = NoLanes; - root.pingedLanes = NoLanes; - root.expiredLanes &= remainingLanes; - root.entangledLanes &= remainingLanes; - root.errorRecoveryDisabledLanes &= remainingLanes; - root.shellSuspendCounter = 0; - var entanglements = root.entanglements; - var expirationTimes = root.expirationTimes; - var hiddenUpdates = root.hiddenUpdates; // Clear the lanes that no longer have pending work + error('%s.childContextTypes is specified but there is no getChildContext() method ' + 'on the instance. You can either define getChildContext() on %s or remove ' + 'childContextTypes from it.', componentName, componentName); + } + } - var lanes = noLongerPendingLanes; + return parentContext; + } - while (lanes > 0) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; - entanglements[index] = NoLanes; - expirationTimes[index] = NoTimestamp; - var hiddenUpdatesForLane = hiddenUpdates[index]; + var childContext = instance.getChildContext(); - if (hiddenUpdatesForLane !== null) { - hiddenUpdates[index] = null; // "Hidden" updates are updates that were made to a hidden component. They - // have special logic associated with them because they may be entangled - // with updates that occur outside that tree. But once the outer tree - // commits, they behave like regular updates. + for (var contextKey in childContext) { + if (!(contextKey in childContextTypes)) { + throw new Error((getComponentNameFromFiber(fiber) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes."); + } + } - for (var i = 0; i < hiddenUpdatesForLane.length; i++) { - var update = hiddenUpdatesForLane[i]; + return assign({}, parentContext, childContext); + } +} - if (update !== null) { - update.lane &= ~OffscreenLane; - } - } - } +function pushContextProvider(workInProgress) { + { + var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity. + // If the instance does not exist yet, we will push null at first, + // and replace it on the stack later when invalidating the context. - lanes &= ~lane; - } + var memoizedMergedChildContext = instance && instance.__reactInternalMemoizedMergedChildContext || emptyContextObject; // Remember the parent context so we can merge with it later. + // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates. - if (spawnedLane !== NoLane) { - markSpawnedDeferredLane( - root, - spawnedLane, // This render finished successfully without suspending, so we don't need - // to entangle the spawned task with the parent task. - NoLanes - ); - } - } + previousContext = contextStackCursor$1.current; + push(contextStackCursor$1, memoizedMergedChildContext, workInProgress); + push(didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress); + return true; + } +} - function markSpawnedDeferredLane(root, spawnedLane, entangledLanes) { - // This render spawned a deferred task. Mark it as pending. - root.pendingLanes |= spawnedLane; - root.suspendedLanes &= ~spawnedLane; // Entangle the spawned lane with the DeferredLane bit so that we know it - // was the result of another render. This lets us avoid a useDeferredValue - // waterfall — only the first level will defer. +function invalidateContextProvider(workInProgress, type, didChange) { + { + var instance = workInProgress.stateNode; - var spawnedLaneIndex = laneToIndex(spawnedLane); - root.entangledLanes |= spawnedLane; - root.entanglements[spawnedLaneIndex] |= - DeferredLane | // If the parent render task suspended, we must also entangle those lanes - // with the spawned task, so that the deferred task includes all the same - // updates that the parent task did. We can exclude any lane that is not - // used for updates (e.g. Offscreen). - (entangledLanes & UpdateLanes); + if (!instance) { + throw new Error('Expected to have an instance by this point. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function markRootEntangled(root, entangledLanes) { - // In addition to entangling each of the given lanes with each other, we also - // have to consider _transitive_ entanglements. For each lane that is already - // entangled with *any* of the given lanes, that lane is now transitively - // entangled with *all* the given lanes. - // - // Translated: If C is entangled with A, then entangling A with B also - // entangles C with B. - // - // If this is hard to grasp, it might help to intentionally break this - // function and look at the tests that fail in ReactTransition-test.js. Try - // commenting out one of the conditions below. - var rootEntangledLanes = (root.entangledLanes |= entangledLanes); - var entanglements = root.entanglements; - var lanes = rootEntangledLanes; - - while (lanes) { - var index = pickArbitraryLaneIndex(lanes); - var lane = 1 << index; + if (didChange) { + // Merge parent and own context. + // Skip this if we're not updating due to sCU. + // This avoids unnecessarily recomputing memoized values. + var mergedContext = processChildContext(workInProgress, type, previousContext); + instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one. + // It is important to unwind the context in the reverse order. - if ( - // Is this one of the newly entangled lanes? - (lane & entangledLanes) | // Is this lane transitively entangled with the newly entangled lanes? - (entanglements[index] & entangledLanes) - ) { - entanglements[index] |= entangledLanes; - } + pop(didPerformWorkStackCursor, workInProgress); + pop(contextStackCursor$1, workInProgress); // Now push the new context and mark that it has changed. - lanes &= ~lane; - } + push(contextStackCursor$1, mergedContext, workInProgress); + push(didPerformWorkStackCursor, didChange, workInProgress); + } else { + pop(didPerformWorkStackCursor, workInProgress); + push(didPerformWorkStackCursor, didChange, workInProgress); } - function upgradePendingLaneToSync(root, lane) { - // Since we're upgrading the priority of the given lane, there is now pending - // sync work. - root.pendingLanes |= SyncLane; // Entangle the sync lane with the lane we're upgrading. This means SyncLane - // will not be allowed to finish without also finishing the given lane. + } +} - root.entangledLanes |= SyncLane; - root.entanglements[SyncLaneIndex] |= lane; +function findCurrentUnmaskedContext(fiber) { + { + // Currently this is only used with renderSubtreeIntoContainer; not sure if it + // makes sense elsewhere + if (!isFiberMounted(fiber) || fiber.tag !== ClassComponent) { + throw new Error('Expected subtree parent to be a mounted class component. ' + 'This error is likely caused by a bug in React. Please file an issue.'); } - function markHiddenUpdate(root, update, lane) { - var index = laneToIndex(lane); - var hiddenUpdates = root.hiddenUpdates; - var hiddenUpdatesForLane = hiddenUpdates[index]; - if (hiddenUpdatesForLane === null) { - hiddenUpdates[index] = [update]; - } else { - hiddenUpdatesForLane.push(update); - } + var node = fiber; - update.lane = lane | OffscreenLane; - } - function getBumpedLaneForHydration(root, renderLanes) { - var renderLane = getHighestPriorityLane(renderLanes); - var lane; + do { + switch (node.tag) { + case HostRoot: + return node.stateNode.context; - if (enableUnifiedSyncLane && (renderLane & SyncUpdateLanes) !== NoLane) { - lane = SyncHydrationLane; - } else { - switch (renderLane) { - case SyncLane: - lane = SyncHydrationLane; - break; + case ClassComponent: + { + var Component = node.type; - case InputContinuousLane: - lane = InputContinuousHydrationLane; - break; + if (isContextProvider(Component)) { + return node.stateNode.__reactInternalMemoizedMergedChildContext; + } - case DefaultLane: - lane = DefaultHydrationLane; break; + } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - case TransitionLane1: - case TransitionLane2: - case TransitionLane3: - case TransitionLane4: - case TransitionLane5: - case TransitionLane6: - case TransitionLane7: - case TransitionLane8: - case TransitionLane9: - case TransitionLane10: - case TransitionLane11: - case TransitionLane12: - case TransitionLane13: - case TransitionLane14: - case TransitionLane15: - case RetryLane1: - case RetryLane2: - case RetryLane3: - case RetryLane4: - lane = TransitionHydrationLane; - break; - case IdleLane: - lane = IdleHydrationLane; - break; + node = node.return; + } while (node !== null); - default: - // Everything else is already either a hydration lane, or shouldn't - // be retried at a hydration lane. - lane = NoLane; - break; - } - } // Check if the lane we chose is suspended. If so, that indicates that we - // already attempted and failed to hydrate at that level. Also check if we're - // already rendering that lane, which is rare but could happen. + throw new Error('Found unexpected detached subtree parent. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - if ((lane & (root.suspendedLanes | renderLanes)) !== NoLane) { - // Give up trying to hydrate and fall back to client render. - return NoLane; - } +// We use the existence of the state object as an indicator that the component +// is hidden. +var OffscreenVisible = +/* */ +1; +var OffscreenDetached = +/* */ +2; +var OffscreenPassiveEffectsConnected = +/* */ +4; +function isOffscreenManual(offscreenFiber) { + return offscreenFiber.memoizedProps !== null && offscreenFiber.memoizedProps.mode === 'manual'; +} - return lane; - } - function addFiberToLanesMap(root, fiber, lanes) { - if (!isDevToolsPresent) { - return; - } +/** + * inlined Object.is polyfill to avoid requiring consumers ship their own + * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is + */ +function is(x, y) { + return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare + ; +} - var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; +var objectIs = // $FlowFixMe[method-unbinding] +typeof Object.is === 'function' ? Object.is : is; - while (lanes > 0) { - var index = laneToIndex(lanes); - var lane = 1 << index; - var updaters = pendingUpdatersLaneMap[index]; - updaters.add(fiber); - lanes &= ~lane; - } - } - function movePendingFibersToMemoized(root, lanes) { - if (!isDevToolsPresent) { - return; +var prefix; +function describeBuiltInComponentFrame(name) { + if (enableComponentStackLocations) { + if (prefix === undefined) { + // Extract the VM specific prefix used by each line. + try { + throw Error(); + } catch (x) { + var match = x.stack.trim().match(/\n( *(at )?)/); + prefix = match && match[1] || ''; } + } // We use the prefix to ensure our stacks line up with native stack frames. - var pendingUpdatersLaneMap = root.pendingUpdatersLaneMap; - var memoizedUpdaters = root.memoizedUpdaters; - while (lanes > 0) { - var index = laneToIndex(lanes); - var lane = 1 << index; - var updaters = pendingUpdatersLaneMap[index]; + return '\n' + prefix + name; + } else { + return describeComponentFrame(name); + } +} +function describeDebugInfoFrame(name, env) { + return describeBuiltInComponentFrame(name + (env ? ' (' + env + ')' : '')); +} +var reentry = false; +var componentFrameCache; - if (updaters.size > 0) { - updaters.forEach(function (fiber) { - var alternate = fiber.alternate; +{ + var PossiblyWeakMap$1 = typeof WeakMap === 'function' ? WeakMap : Map; + componentFrameCache = new PossiblyWeakMap$1(); +} +/** + * Leverages native browser/VM stack frames to get proper details (e.g. + * filename, line + col number) for a single component in a component stack. We + * do this by: + * (1) throwing and catching an error in the function - this will be our + * control error. + * (2) calling the component which will eventually throw an error that we'll + * catch - this will be our sample error. + * (3) diffing the control and sample error stacks to find the stack frame + * which represents our component. + */ - if (alternate === null || !memoizedUpdaters.has(alternate)) { - memoizedUpdaters.add(fiber); - } - }); - updaters.clear(); - } - lanes &= ~lane; - } - } - function getTransitionsForLanes(root, lanes) { - { - return null; - } - } +function describeNativeComponentFrame(fn, construct) { + // If something asked for a stack inside a fake render, it should get ignored. + if (!fn || reentry) { + return ''; + } - var NoEventPriority = NoLane; - var DiscreteEventPriority = SyncLane; - var ContinuousEventPriority = InputContinuousLane; - var DefaultEventPriority = DefaultLane; - var IdleEventPriority = IdleLane; - function higherEventPriority(a, b) { - return a !== 0 && a < b ? a : b; - } - function lowerEventPriority(a, b) { - return a === 0 || a > b ? a : b; - } - function isHigherEventPriority(a, b) { - return a !== 0 && a < b; - } - function eventPriorityToLane(updatePriority) { - return updatePriority; + { + var frame = componentFrameCache.get(fn); + + if (frame !== undefined) { + return frame; } - function lanesToEventPriority(lanes) { - var lane = getHighestPriorityLane(lanes); + } - if (!isHigherEventPriority(DiscreteEventPriority, lane)) { - return DiscreteEventPriority; - } + reentry = true; + var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. - if (!isHigherEventPriority(ContinuousEventPriority, lane)) { - return ContinuousEventPriority; - } + Error.prepareStackTrace = undefined; + var previousDispatcher = null; - if (includesNonIdleWork(lane)) { - return DefaultEventPriority; - } + { + previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function + // for warnings. + + ReactSharedInternals.H = null; + disableLogs(); + } + /** + * Finding a common stack frame between sample and control errors can be + * tricky given the different types and levels of stack trace truncation from + * different JS VMs. So instead we'll attempt to control what that common + * frame should be through this object method: + * Having both the sample and control errors be in the function under the + * `DescribeNativeComponentFrameRoot` property, + setting the `name` and + * `displayName` properties of the function ensures that a stack + * frame exists that has the method name `DescribeNativeComponentFrameRoot` in + * it for both control and sample stacks. + */ - return IdleEventPriority; - } - // Renderers that don't support hydration - // can re-export everything from this module. - function shim$1() { - throw new Error( - "The current renderer does not support hydration. " + - "This error is likely caused by a bug in React. " + - "Please file an issue." - ); - } // Hydration (when unsupported) + var RunInRootFrame = { + DetermineComponentFrameRoot: function () { + var control; - var supportsHydration = false; - var isSuspenseInstancePending = shim$1; - var isSuspenseInstanceFallback = shim$1; - var getSuspenseInstanceFallbackErrorDetails = shim$1; - var registerSuspenseInstanceRetry = shim$1; - var clearSuspenseBoundary = shim$1; - var clearSuspenseBoundaryFromContainer = shim$1; + try { + // This should throw. + if (construct) { + // Something should be setting the props in the constructor. + var Fake = function () { + throw Error(); + }; // $FlowFixMe[prop-missing] - // Renderers that don't support hydration - // can re-export everything from this module. - function shim() { - throw new Error( - "The current renderer does not support Resources. " + - "This error is likely caused by a bug in React. " + - "Please file an issue." - ); - } // Resources (when unsupported) - var suspendResource = shim; - var getViewConfigForType = - ReactNativePrivateInterface.ReactNativeViewConfigRegistry.get; // Unused - // Unused - // Counter for uniquely identifying views. - // % 10 === 1 means it is a rootTag. - // % 2 === 0 means it is a Fabric tag. + Object.defineProperty(Fake.prototype, 'props', { + set: function () { + // We use a throwing setter instead of frozen or non-writable props + // because that won't throw in a non-strict mode function. + throw Error(); + } + }); - var nextReactTag = 3; + if (typeof Reflect === 'object' && Reflect.construct) { + // We construct a different control for this case to include any extra + // frames added by the construct call. + try { + Reflect.construct(Fake, []); + } catch (x) { + control = x; + } - function allocateTag() { - var tag = nextReactTag; + Reflect.construct(fn, [], Fake); + } else { + try { + Fake.call(); + } catch (x) { + control = x; + } // $FlowFixMe[prop-missing] found when upgrading Flow - if (tag % 10 === 1) { - tag += 2; - } - nextReactTag = tag + 2; - return tag; - } + fn.call(Fake.prototype); + } + } else { + try { + throw Error(); + } catch (x) { + control = x; + } // TODO(luna): This will currently only throw if the function component + // tries to access React/ReactDOM/props. We should probably make this throw + // in simple components too - function recursivelyUncacheFiberNode(node) { - if (typeof node === "number") { - // Leaf node (eg text) - uncacheFiberNode(node); - } else { - uncacheFiberNode(node._nativeTag); - node._children.forEach(recursivelyUncacheFiberNode); - } - } - function appendInitialChild(parentInstance, child) { - parentInstance._children.push(child); - } - function createInstance( - type, - props, - rootContainerInstance, - hostContext, - internalInstanceHandle - ) { - var tag = allocateTag(); - var viewConfig = getViewConfigForType(type); + var maybePromise = fn(); // If the function component returns a promise, it's likely an async + // component, which we don't yet support. Attach a noop catch handler to + // silence the error. + // TODO: Implement component stacks for async client components? - { - for (var key in viewConfig.validAttributes) { - if (props.hasOwnProperty(key)) { - ReactNativePrivateInterface.deepFreezeAndThrowOnMutationInDev( - props[key] - ); + if (maybePromise && typeof maybePromise.catch === 'function') { + maybePromise.catch(function () {}); } } + } catch (sample) { + // This is inlined manually because closure doesn't do it for us. + if (sample && control && typeof sample.stack === 'string') { + return [sample.stack, control.stack]; + } } - var updatePayload = create(props, viewConfig.validAttributes); - ReactNativePrivateInterface.UIManager.createView( - tag, // reactTag - viewConfig.uiViewClassName, // viewName - rootContainerInstance, // rootTag - updatePayload // props - ); - var component = new ReactNativeFiberHostComponent( - tag, - viewConfig, - internalInstanceHandle - ); - precacheFiberNode(internalInstanceHandle, tag); - updateFiberProps(tag, props); // Not sure how to avoid this cast. Flow is okay if the component is defined - // in the same file but if it's external it can't see the types. - - return component; - } - function createTextInstance( - text, - rootContainerInstance, - hostContext, - internalInstanceHandle - ) { - if (!hostContext.isInAParentText) { - throw new Error( - "Text strings must be rendered within a component." - ); - } - - var tag = allocateTag(); - ReactNativePrivateInterface.UIManager.createView( - tag, // reactTag - "RCTRawText", // viewName - rootContainerInstance, // rootTag - { - text: text - } // props - ); - precacheFiberNode(internalInstanceHandle, tag); - return tag; - } - function finalizeInitialChildren(parentInstance, type, props, hostContext) { - // Don't send a no-op message over the bridge. - if (parentInstance._children.length === 0) { - return false; - } // Map from child objects to native tags. - // Either way we need to pass a copy of the Array to prevent it from being frozen. + return [null, null]; + } + }; // $FlowFixMe[prop-missing] - var nativeTags = parentInstance._children.map(function (child) { - return typeof child === "number" - ? child // Leaf node (eg text) - : child._nativeTag; - }); + RunInRootFrame.DetermineComponentFrameRoot.displayName = 'DetermineComponentFrameRoot'; + var namePropDescriptor = Object.getOwnPropertyDescriptor(RunInRootFrame.DetermineComponentFrameRoot, 'name'); // Before ES6, the `name` property was not configurable. - ReactNativePrivateInterface.UIManager.setChildren( - parentInstance._nativeTag, // containerTag - nativeTags // reactTags - ); - return false; - } - function getRootHostContext(rootContainerInstance) { - return { - isInAParentText: false - }; - } - function getChildHostContext(parentHostContext, type) { - var prevIsInAParentText = parentHostContext.isInAParentText; - var isInAParentText = - type === "AndroidTextInput" || // Android - type === "RCTMultilineTextInputView" || // iOS - type === "RCTSinglelineTextInputView" || // iOS - type === "RCTText" || - type === "RCTVirtualText"; + if (namePropDescriptor && namePropDescriptor.configurable) { + // V8 utilizes a function's `name` property when generating a stack trace. + Object.defineProperty(RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor + // is set to `false`. + // $FlowFixMe[cannot-write] + 'name', { + value: 'DetermineComponentFrameRoot' + }); + } + + try { + var _RunInRootFrame$Deter = RunInRootFrame.DetermineComponentFrameRoot(), + sampleStack = _RunInRootFrame$Deter[0], + controlStack = _RunInRootFrame$Deter[1]; + + if (sampleStack && controlStack) { + // This extracts the first frame from the sample that isn't also in the control. + // Skipping one frame that we assume is the frame that calls the two. + var sampleLines = sampleStack.split('\n'); + var controlLines = controlStack.split('\n'); + var s = 0; + var c = 0; + + while (s < sampleLines.length && !sampleLines[s].includes('DetermineComponentFrameRoot')) { + s++; + } + + while (c < controlLines.length && !controlLines[c].includes('DetermineComponentFrameRoot')) { + c++; + } // We couldn't find our intentionally injected common root frame, attempt + // to find another common root frame by search from the bottom of the + // control stack... + + + if (s === sampleLines.length || c === controlLines.length) { + s = sampleLines.length - 1; + c = controlLines.length - 1; + + while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { + // We expect at least one stack frame to be shared. + // Typically this will be the root most one. However, stack frames may be + // cut off due to maximum stack limits. In this case, one maybe cut off + // earlier than the other. We assume that the sample is longer or the same + // and there for cut off earlier. So we should find the root most frame in + // the sample somewhere in the control. + c--; + } + } + + for (; s >= 1 && c >= 0; s--, c--) { + // Next we find the first one that isn't the same which should be the + // frame that called our sample function and the control. + if (sampleLines[s] !== controlLines[c]) { + // In V8, the first line is describing the message but other VMs don't. + // If we're about to return the first line, and the control is also on the same + // line, that's a pretty good indicator that our sample threw at same line as + // the control. I.e. before we entered the sample frame. So we ignore this result. + // This can happen if you passed a class to function component, or non-function. + if (s !== 1 || c !== 1) { + do { + s--; + c--; // We may still have similar intermediate frames from the construct call. + // The next one that isn't the same should be our match though. - if (prevIsInAParentText !== isInAParentText) { - return { - isInAParentText: isInAParentText - }; - } else { - return parentHostContext; - } - } - function getPublicInstance(instance) { - // $FlowExpectedError[prop-missing] For compatibility with Fabric - if ( - instance.canonical != null && - instance.canonical.publicInstance != null - ) { - // $FlowFixMe[incompatible-return] - return instance.canonical.publicInstance; - } + if (c < 0 || sampleLines[s] !== controlLines[c]) { + // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. + var _frame = '\n' + sampleLines[s].replace(' at new ', ' at '); // If our component frame is labeled "" + // but we have a user-provided "displayName" + // splice it in to make the stack more readable. - return instance; - } - var scheduleTimeout = setTimeout; - var cancelTimeout = clearTimeout; - var noTimeout = -1; - function shouldSetTextContent(type, props) { - // TODO (bvaughn) Revisit this decision. - // Always returning false simplifies the createInstance() implementation, - // But creates an additional child Fiber for raw text children. - // No additional native views are created though. - // It's not clear to me which is better so I'm deferring for now. - // More context @ github.com/facebook/react/pull/8560#discussion_r92111303 - return false; - } - var currentUpdatePriority = NoEventPriority; - function setCurrentUpdatePriority(newPriority) { - currentUpdatePriority = newPriority; - } - function getCurrentUpdatePriority() { - return currentUpdatePriority; - } - function resolveUpdatePriority() { - if (currentUpdatePriority !== NoEventPriority) { - return currentUpdatePriority; - } - return DefaultEventPriority; - } - function shouldAttemptEagerTransition() { - return false; - } // ------------------- - function appendChild(parentInstance, child) { - var childTag = typeof child === "number" ? child : child._nativeTag; - var children = parentInstance._children; - var index = children.indexOf(child); - - if (index >= 0) { - children.splice(index, 1); - children.push(child); - ReactNativePrivateInterface.UIManager.manageChildren( - parentInstance._nativeTag, // containerTag - [index], // moveFromIndices - [children.length - 1], // moveToIndices - [], // addChildReactTags - [], // addAtIndices - [] // removeAtIndices - ); - } else { - children.push(child); - ReactNativePrivateInterface.UIManager.manageChildren( - parentInstance._nativeTag, // containerTag - [], // moveFromIndices - [], // moveToIndices - [childTag], // addChildReactTags - [children.length - 1], // addAtIndices - [] // removeAtIndices - ); - } - } - function appendChildToContainer(parentInstance, child) { - var childTag = typeof child === "number" ? child : child._nativeTag; - ReactNativePrivateInterface.UIManager.setChildren( - parentInstance, // containerTag - [childTag] // reactTags - ); - } - function commitTextUpdate(textInstance, oldText, newText) { - ReactNativePrivateInterface.UIManager.updateView( - textInstance, // reactTag - "RCTRawText", // viewName - { - text: newText - } // props - ); - } - function commitMount(instance, type, newProps, internalInstanceHandle) { - // Noop - } - function commitUpdate( - instance, - updatePayloadTODO, - type, - oldProps, - newProps, - internalInstanceHandle - ) { - var viewConfig = instance.viewConfig; - updateFiberProps(instance._nativeTag, newProps); - var updatePayload = diff(oldProps, newProps, viewConfig.validAttributes); // Avoid the overhead of bridge calls if there's no update. - // This is an expensive no-op for Android, and causes an unnecessary - // view invalidation for certain components (eg RCTTextInput) on iOS. - - if (updatePayload != null) { - ReactNativePrivateInterface.UIManager.updateView( - instance._nativeTag, // reactTag - viewConfig.uiViewClassName, // viewName - updatePayload // props - ); - } - } - function insertBefore(parentInstance, child, beforeChild) { - var children = parentInstance._children; - var index = children.indexOf(child); // Move existing child or add new child? - - if (index >= 0) { - children.splice(index, 1); - var beforeChildIndex = children.indexOf(beforeChild); - children.splice(beforeChildIndex, 0, child); - ReactNativePrivateInterface.UIManager.manageChildren( - parentInstance._nativeTag, // containerID - [index], // moveFromIndices - [beforeChildIndex], // moveToIndices - [], // addChildReactTags - [], // addAtIndices - [] // removeAtIndices - ); - } else { - var _beforeChildIndex = children.indexOf(beforeChild); - - children.splice(_beforeChildIndex, 0, child); - var childTag = typeof child === "number" ? child : child._nativeTag; - ReactNativePrivateInterface.UIManager.manageChildren( - parentInstance._nativeTag, // containerID - [], // moveFromIndices - [], // moveToIndices - [childTag], // addChildReactTags - [_beforeChildIndex], // addAtIndices - [] // removeAtIndices - ); - } - } - function insertInContainerBefore(parentInstance, child, beforeChild) { - // TODO (bvaughn): Remove this check when... - // We create a wrapper object for the container in ReactNative render() - // Or we refactor to remove wrapper objects entirely. - // For more info on pros/cons see PR #8560 description. - if (typeof parentInstance === "number") { - throw new Error("Container does not support insertBefore operation"); - } - } - function removeChild(parentInstance, child) { - recursivelyUncacheFiberNode(child); - var children = parentInstance._children; - var index = children.indexOf(child); - children.splice(index, 1); - ReactNativePrivateInterface.UIManager.manageChildren( - parentInstance._nativeTag, // containerID - [], // moveFromIndices - [], // moveToIndices - [], // addChildReactTags - [], // addAtIndices - [index] // removeAtIndices - ); - } - function removeChildFromContainer(parentInstance, child) { - recursivelyUncacheFiberNode(child); - ReactNativePrivateInterface.UIManager.manageChildren( - parentInstance, // containerID - [], // moveFromIndices - [], // moveToIndices - [], // addChildReactTags - [], // addAtIndices - [0] // removeAtIndices - ); - } - function resetTextContent(instance) { - // Noop - } - function hideInstance(instance) { - var viewConfig = instance.viewConfig; - var updatePayload = create( - { - style: { - display: "none" + if (fn.displayName && _frame.includes('')) { + _frame = _frame.replace('', fn.displayName); + } + + if (true) { + if (typeof fn === 'function') { + componentFrameCache.set(fn, _frame); + } + } // Return the line we found. + + + return _frame; + } + } while (s >= 1 && c >= 0); } - }, - viewConfig.validAttributes - ); - ReactNativePrivateInterface.UIManager.updateView( - instance._nativeTag, - viewConfig.uiViewClassName, - updatePayload - ); - } - function hideTextInstance(textInstance) { - throw new Error("Not yet implemented."); - } - function unhideInstance(instance, props) { - var viewConfig = instance.viewConfig; - var updatePayload = diff( - assign({}, props, { - style: [ - props.style, - { - display: "none" - } - ] - }), - props, - viewConfig.validAttributes - ); - ReactNativePrivateInterface.UIManager.updateView( - instance._nativeTag, - viewConfig.uiViewClassName, - updatePayload - ); - } - function unhideTextInstance(textInstance, text) { - throw new Error("Not yet implemented."); - } - function preloadInstance(type, props) { - // Return true to indicate it's already loaded - return true; - } - function waitForCommitToBeReady() { - return null; + + break; + } + } } - var NotPendingTransition = null; - - var valueStack = []; - var fiberStack; + } finally { + reentry = false; { - fiberStack = []; + ReactSharedInternals.H = previousDispatcher; + reenableLogs(); } - var index = -1; + Error.prepareStackTrace = previousPrepareStackTrace; + } // Fallback to just using the name if we couldn't make it throw. - function createCursor(defaultValue) { - return { - current: defaultValue - }; + + var name = fn ? fn.displayName || fn.name : ''; + var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ''; + + { + if (typeof fn === 'function') { + componentFrameCache.set(fn, syntheticFrame); } + } - function pop(cursor, fiber) { - if (index < 0) { - { - error("Unexpected pop."); - } + return syntheticFrame; +} - return; - } +function describeComponentFrame(name) { + return '\n in ' + (name || 'Unknown'); +} - { - if (fiber !== fiberStack[index]) { - error("Unexpected Fiber popped."); - } - } +function describeClassComponentFrame(ctor) { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(ctor, true); + } else { + return describeFunctionComponentFrame(ctor); + } +} +function describeFunctionComponentFrame(fn) { + if (enableComponentStackLocations) { + return describeNativeComponentFrame(fn, false); + } else { + if (!fn) { + return ''; + } - cursor.current = valueStack[index]; - valueStack[index] = null; + var name = fn.displayName || fn.name || null; + return describeComponentFrame(name); + } +} - { - fiberStack[index] = null; - } +function describeFiber(fiber) { + switch (fiber.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + return describeBuiltInComponentFrame(fiber.type); - index--; - } + case LazyComponent: + return describeBuiltInComponentFrame('Lazy'); - function push(cursor, value, fiber) { - index++; - valueStack[index] = cursor.current; + case SuspenseComponent: + return describeBuiltInComponentFrame('Suspense'); - { - fiberStack[index] = fiber; - } + case SuspenseListComponent: + return describeBuiltInComponentFrame('SuspenseList'); - cursor.current = value; - } + case FunctionComponent: + case SimpleMemoComponent: + return describeFunctionComponentFrame(fiber.type); - var warnedAboutMissingGetChildContext; + case ForwardRef: + return describeFunctionComponentFrame(fiber.type.render); - { - warnedAboutMissingGetChildContext = {}; - } + case ClassComponent: + return describeClassComponentFrame(fiber.type); - var emptyContextObject = {}; + default: + return ''; + } +} - { - Object.freeze(emptyContextObject); - } // A cursor to the current merged context object on the stack. +function getStackByFiberInDevAndProd(workInProgress) { + try { + var info = ''; + var node = workInProgress; - var contextStackCursor$1 = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed. + do { + info += describeFiber(node); - var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack. - // We use this to get access to the parent context after we have already - // pushed the next context provider, and now need to merge their contexts. + if (true) { + // Add any Server Component stack frames in reverse order. + var debugInfo = node._debugInfo; - var previousContext = emptyContextObject; + if (debugInfo) { + for (var i = debugInfo.length - 1; i >= 0; i--) { + var entry = debugInfo[i]; - function getUnmaskedContext( - workInProgress, - Component, - didPushOwnContextIfProvider - ) { - { - if (didPushOwnContextIfProvider && isContextProvider(Component)) { - // If the fiber is a context provider itself, when we read its context - // we may have already pushed its own child context on the stack. A context - // provider should not "see" its own child context. Therefore we read the - // previous (parent) context instead for a context provider. - return previousContext; + if (typeof entry.name === 'string') { + info += describeDebugInfoFrame(entry.name, entry.env); + } + } } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - return contextStackCursor$1.current; - } - } - function cacheContext(workInProgress, unmaskedContext, maskedContext) { - { - var instance = workInProgress.stateNode; - instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext; - instance.__reactInternalMemoizedMaskedChildContext = maskedContext; - } - } + node = node.return; + } while (node); - function getMaskedContext(workInProgress, unmaskedContext) { - { - var type = workInProgress.type; - var contextTypes = type.contextTypes; + return info; + } catch (x) { + return '\nError generating stack: ' + x.message + '\n' + x.stack; + } +} - if (!contextTypes) { - return emptyContextObject; - } // Avoid recreating masked context unless unmasked context has changed. - // Failing to do this will result in unnecessary calls to componentWillReceiveProps. - // This may trigger infinite loops if componentWillReceiveProps calls setState. +var CapturedStacks = new WeakMap(); +function createCapturedValueAtFiber(value, source) { + // If the value is an error, call this function immediately after it is thrown + // so the stack is accurate. + var stack; + + if (typeof value === 'object' && value !== null) { + var capturedStack = CapturedStacks.get(value); + + if (typeof capturedStack === 'string') { + stack = capturedStack; + } else { + stack = getStackByFiberInDevAndProd(source); + CapturedStacks.set(value, stack); + } + } else { + stack = getStackByFiberInDevAndProd(source); + } + + return { + value: value, + source: source, + stack: stack + }; +} +function createCapturedValueFromError(value, stack) { + if (typeof stack === 'string') { + CapturedStacks.set(value, stack); + } + + return { + value: value, + source: null, + stack: stack + }; +} - var instance = workInProgress.stateNode; +var contextStackCursor = createCursor(null); +var contextFiberStackCursor = createCursor(null); +var rootInstanceStackCursor = createCursor(null); // Represents the nearest host transition provider (in React DOM, a ) +// NOTE: Since forms cannot be nested, and this feature is only implemented by +// React DOM, we don't technically need this to be a stack. It could be a single +// module variable instead. + +var hostTransitionProviderCursor = createCursor(null); // TODO: This should initialize to NotPendingTransition, a constant +// imported from the fiber config. However, because of a cycle in the module +// graph, that value isn't defined during this module's initialization. I can't +// think of a way to work around this without moving that value out of the +// fiber config. For now, the "no provider" case is handled when reading, +// inside useHostTransitionStatus. + +var HostTransitionContext = { + $$typeof: REACT_CONTEXT_TYPE, + Provider: null, + Consumer: null, + _currentValue: null, + _currentValue2: null, + _threadCount: 0 +}; + +function requiredContext(c) { + { + if (c === null) { + error('Expected host context to exist. This error is likely caused by a bug ' + 'in React. Please file an issue.'); + } + } + + return c; +} - if ( - instance && - instance.__reactInternalMemoizedUnmaskedChildContext === - unmaskedContext - ) { - return instance.__reactInternalMemoizedMaskedChildContext; - } +function getRootHostContainer() { + var rootInstance = requiredContext(rootInstanceStackCursor.current); + return rootInstance; +} - var context = {}; +function pushHostContainer(fiber, nextRootInstance) { + // Push current root instance onto the stack; + // This allows us to reset root when portals are popped. + push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it. + // This enables us to pop only Fibers that provide unique contexts. - for (var key in contextTypes) { - context[key] = unmaskedContext[key]; - } // Cache unmasked context so we can avoid recreating masked context unless necessary. - // Context is created before the class component is instantiated so check for instance. + push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack. + // However, we can't just call getRootHostContext() and push it because + // we'd have a different number of entries on the stack depending on + // whether getRootHostContext() throws somewhere in renderer code or not. + // So we push an empty value first. This lets us safely unwind on errors. - if (instance) { - cacheContext(workInProgress, unmaskedContext, context); - } + push(contextStackCursor, null, fiber); + var nextRootContext = getRootHostContext(); // Now that we know this function doesn't throw, replace it. - return context; - } - } + pop(contextStackCursor, fiber); + push(contextStackCursor, nextRootContext, fiber); +} - function hasContextChanged() { - { - return didPerformWorkStackCursor.current; - } +function popHostContainer(fiber) { + pop(contextStackCursor, fiber); + pop(contextFiberStackCursor, fiber); + pop(rootInstanceStackCursor, fiber); +} + +function getHostContext() { + var context = requiredContext(contextStackCursor.current); + return context; +} + +function pushHostContext(fiber) { + if (enableAsyncActions) { + var stateHook = fiber.memoizedState; + + if (stateHook !== null) { + // Only provide context if this fiber has been upgraded by a host + // transition. We use the same optimization for regular host context below. + push(hostTransitionProviderCursor, fiber, fiber); } + } + + var context = requiredContext(contextStackCursor.current); + var nextContext = getChildHostContext(context, fiber.type); // Don't push this Fiber's context unless it's unique. + + if (context !== nextContext) { + // Track the context and the Fiber that provided it. + // This enables us to pop only Fibers that provide unique contexts. + push(contextFiberStackCursor, fiber, fiber); + push(contextStackCursor, nextContext, fiber); + } +} + +function popHostContext(fiber) { + if (contextFiberStackCursor.current === fiber) { + // Do not pop unless this Fiber provided the current context. + // pushHostContext() only pushes Fibers that provide unique contexts. + pop(contextStackCursor, fiber); + pop(contextFiberStackCursor, fiber); + } + + if (enableAsyncActions) { + if (hostTransitionProviderCursor.current === fiber) { + // Do not pop unless this Fiber provided the current context. This is mostly + // a performance optimization, but conveniently it also prevents a potential + // data race where a host provider is upgraded (i.e. memoizedState becomes + // non-null) during a concurrent event. This is a bit of a flaw in the way + // we upgrade host components, but because we're accounting for it here, it + // should be fine. + pop(hostTransitionProviderCursor, fiber); // When popping the transition provider, we reset the context value back + // to `null`. We can do this because you're not allowd to nest forms. If + // we allowed for multiple nested host transition providers, then we'd + // need to reset this to the parent provider's status. - function isContextProvider(type) { { - var childContextTypes = type.childContextTypes; - return childContextTypes !== null && childContextTypes !== undefined; + HostTransitionContext._currentValue = null; } } + } +} - function popContext(fiber) { - { - pop(didPerformWorkStackCursor, fiber); - pop(contextStackCursor$1, fiber); +var maxRowLength = 120; +var idealDepth = 15; + +function findNotableNode(node, indent) { + if (node.serverProps === undefined && node.serverTail.length === 0 && node.children.length === 1 && node.distanceFromLeaf > 3 && node.distanceFromLeaf > idealDepth - indent) { + // This is not an interesting node for contextual purposes so we can skip it. + var child = node.children[0]; + return findNotableNode(child, indent); + } + + return node; +} + +function indentation(indent) { + return ' ' + ' '.repeat(indent); +} + +function added(indent) { + return '+ ' + ' '.repeat(indent); +} + +function removed(indent) { + return '- ' + ' '.repeat(indent); +} + +function describeFiberType(fiber) { + switch (fiber.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + return fiber.type; + + case LazyComponent: + return 'Lazy'; + + case SuspenseComponent: + return 'Suspense'; + + case SuspenseListComponent: + return 'SuspenseList'; + + case FunctionComponent: + case SimpleMemoComponent: + var fn = fiber.type; + return fn.displayName || fn.name || null; + + case ForwardRef: + var render = fiber.type.render; + return render.displayName || render.name || null; + + case ClassComponent: + var ctr = fiber.type; + return ctr.displayName || ctr.name || null; + + default: + // Skip + return null; + } +} + +var needsEscaping = /["'&<>\n\t]/; + +function describeTextNode(content, maxLength) { + if (needsEscaping.test(content)) { + var encoded = JSON.stringify(content); + + if (encoded.length > maxLength - 2) { + if (maxLength < 8) { + return '{"..."}'; } + + return '{' + encoded.slice(0, maxLength - 7) + '..."}'; } - function popTopLevelContextObject(fiber) { - { - pop(didPerformWorkStackCursor, fiber); - pop(contextStackCursor$1, fiber); + return '{' + encoded + '}'; + } else { + if (content.length > maxLength) { + if (maxLength < 5) { + return '{"..."}'; } + + return content.slice(0, maxLength - 3) + '...'; } - function pushTopLevelContextObject(fiber, context, didChange) { - { - if (contextStackCursor$1.current !== emptyContextObject) { - throw new Error( - "Unexpected context found on stack. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } + return content; + } +} + +function describeTextDiff(clientText, serverProps, indent) { + var maxLength = maxRowLength - indent * 2; - push(contextStackCursor$1, context, fiber); - push(didPerformWorkStackCursor, didChange, fiber); + if (serverProps === null) { + return added(indent) + describeTextNode(clientText, maxLength) + '\n'; + } else if (typeof serverProps === 'string') { + var serverText = serverProps; + var firstDiff = 0; + + for (; firstDiff < serverText.length && firstDiff < clientText.length; firstDiff++) { + if (serverText.charCodeAt(firstDiff) !== clientText.charCodeAt(firstDiff)) { + break; } } - function processChildContext(fiber, type, parentContext) { - { - var instance = fiber.stateNode; - var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future. - // It has only been added in Fiber to match the (unintentional) behavior in Stack. + if (firstDiff > maxLength - 8 && firstDiff > 10) { + // The first difference between the two strings would be cut off, so cut off in + // the beginning instead. + clientText = '...' + clientText.slice(firstDiff - 8); + serverText = '...' + serverText.slice(firstDiff - 8); + } - if (typeof instance.getChildContext !== "function") { - { - var componentName = getComponentNameFromFiber(fiber) || "Unknown"; - - if (!warnedAboutMissingGetChildContext[componentName]) { - warnedAboutMissingGetChildContext[componentName] = true; - - error( - "%s.childContextTypes is specified but there is no getChildContext() method " + - "on the instance. You can either define getChildContext() on %s or remove " + - "childContextTypes from it.", - componentName, - componentName - ); - } - } + return added(indent) + describeTextNode(clientText, maxLength) + '\n' + removed(indent) + describeTextNode(serverText, maxLength) + '\n'; + } else { + return indentation(indent) + describeTextNode(clientText, maxLength) + '\n'; + } +} - return parentContext; - } +function objectName(object) { + // $FlowFixMe[method-unbinding] + var name = Object.prototype.toString.call(object); + return name.replace(/^\[object (.*)\]$/, function (m, p0) { + return p0; + }); +} - var childContext = instance.getChildContext(); +function describeValue(value, maxLength) { + switch (typeof value) { + case 'string': + { + var encoded = JSON.stringify(value); - for (var contextKey in childContext) { - if (!(contextKey in childContextTypes)) { - throw new Error( - (getComponentNameFromFiber(fiber) || "Unknown") + - '.getChildContext(): key "' + - contextKey + - '" is not defined in childContextTypes.' - ); + if (encoded.length > maxLength) { + if (maxLength < 5) { + return '"..."'; } - } - return assign({}, parentContext, childContext); - } - } + return encoded.slice(0, maxLength - 4) + '..."'; + } - function pushContextProvider(workInProgress) { - { - var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity. - // If the instance does not exist yet, we will push null at first, - // and replace it on the stack later when invalidating the context. - - var memoizedMergedChildContext = - (instance && instance.__reactInternalMemoizedMergedChildContext) || - emptyContextObject; // Remember the parent context so we can merge with it later. - // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates. - - previousContext = contextStackCursor$1.current; - push(contextStackCursor$1, memoizedMergedChildContext, workInProgress); - push( - didPerformWorkStackCursor, - didPerformWorkStackCursor.current, - workInProgress - ); - return true; + return encoded; } - } - function invalidateContextProvider(workInProgress, type, didChange) { + case 'object': { - var instance = workInProgress.stateNode; + if (value === null) { + return 'null'; + } - if (!instance) { - throw new Error( - "Expected to have an instance by this point. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - - if (didChange) { - // Merge parent and own context. - // Skip this if we're not updating due to sCU. - // This avoids unnecessarily recomputing memoized values. - var mergedContext = processChildContext( - workInProgress, - type, - previousContext - ); - instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one. - // It is important to unwind the context in the reverse order. - - pop(didPerformWorkStackCursor, workInProgress); - pop(contextStackCursor$1, workInProgress); // Now push the new context and mark that it has changed. - - push(contextStackCursor$1, mergedContext, workInProgress); - push(didPerformWorkStackCursor, didChange, workInProgress); - } else { - pop(didPerformWorkStackCursor, workInProgress); - push(didPerformWorkStackCursor, didChange, workInProgress); + if (isArray(value)) { + return '[...]'; } - } - } - function findCurrentUnmaskedContext(fiber) { - { - // Currently this is only used with renderSubtreeIntoContainer; not sure if it - // makes sense elsewhere - if (!isFiberMounted(fiber) || fiber.tag !== ClassComponent) { - throw new Error( - "Expected subtree parent to be a mounted class component. " + - "This error is likely caused by a bug in React. Please file an issue." - ); + if (value.$$typeof === REACT_ELEMENT_TYPE) { + var type = getComponentNameFromType(value.type); + return type ? '<' + type + '>' : '<...>'; } - var node = fiber; + var name = objectName(value); - do { - switch (node.tag) { - case HostRoot: - return node.stateNode.context; + if (name === 'Object') { + var properties = ''; + maxLength -= 2; + + for (var propName in value) { + if (!value.hasOwnProperty(propName)) { + continue; + } - case ClassComponent: { - var Component = node.type; + var jsonPropName = JSON.stringify(propName); - if (isContextProvider(Component)) { - return node.stateNode.__reactInternalMemoizedMergedChildContext; - } + if (jsonPropName !== '"' + propName + '"') { + propName = jsonPropName; + } + + maxLength -= propName.length - 2; + var propValue = describeValue(value[propName], maxLength < 15 ? maxLength : 15); + maxLength -= propValue.length; + if (maxLength < 0) { + properties += properties === '' ? '...' : ', ...'; break; } - } // $FlowFixMe[incompatible-type] we bail out when we get a null - node = node.return; - } while (node !== null); + properties += (properties === '' ? '' : ',') + propName + ':' + propValue; + } + + return '{' + properties + '}'; + } - throw new Error( - "Found unexpected detached subtree parent. " + - "This error is likely caused by a bug in React. Please file an issue." - ); + return name; } - } - // We use the existence of the state object as an indicator that the component - // is hidden. - var OffscreenVisible = - /* */ - 1; - var OffscreenDetached = - /* */ - 2; - var OffscreenPassiveEffectsConnected = - /* */ - 4; - function isOffscreenManual(offscreenFiber) { - return ( - offscreenFiber.memoizedProps !== null && - offscreenFiber.memoizedProps.mode === "manual" - ); - } + case 'function': + { + var _name = value.displayName || value.name; - /** - * inlined Object.is polyfill to avoid requiring consumers ship their own - * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is - */ - function is(x, y) { - return ( - (x === y && (x !== 0 || 1 / x === 1 / y)) || (x !== x && y !== y) // eslint-disable-line no-self-compare - ); + return _name ? 'function ' + _name : 'function'; + } + + default: + // eslint-disable-next-line react-internal/safe-string-coercion + return String(value); + } +} + +function describePropValue(value, maxLength) { + if (typeof value === 'string' && !needsEscaping.test(value)) { + if (value.length > maxLength - 2) { + if (maxLength < 5) { + return '"..."'; + } + + return '"' + value.slice(0, maxLength - 5) + '..."'; } - var objectIs = typeof Object.is === "function" ? Object.is : is; // $FlowFixMe[method-unbinding] + return '"' + value + '"'; + } - var prefix; - function describeBuiltInComponentFrame(name) { - if (enableComponentStackLocations) { - if (prefix === undefined) { - // Extract the VM specific prefix used by each line. - try { - throw Error(); - } catch (x) { - var match = x.stack.trim().match(/\n( *(at )?)/); - prefix = (match && match[1]) || ""; - } - } // We use the prefix to ensure our stacks line up with native stack frames. + return '{' + describeValue(value, maxLength - 2) + '}'; +} - return "\n" + prefix + name; - } else { - return describeComponentFrame(name); - } +function describeCollapsedElement(type, props, indent) { + // This function tries to fit the props into a single line for non-essential elements. + // We also ignore children because we're not going deeper. + var maxLength = maxRowLength - indent * 2 - type.length - 2; + var content = ''; + + for (var propName in props) { + if (!props.hasOwnProperty(propName)) { + continue; } - function describeDebugInfoFrame(name, env) { - return describeBuiltInComponentFrame( - name + (env ? " (" + env + ")" : "") - ); + + if (propName === 'children') { + // Ignored. + continue; } - var reentry = false; - var componentFrameCache; - { - var PossiblyWeakMap$1 = typeof WeakMap === "function" ? WeakMap : Map; - componentFrameCache = new PossiblyWeakMap$1(); + var propValue = describePropValue(props[propName], 15); + maxLength -= propName.length + propValue.length + 2; + + if (maxLength < 0) { + content += ' ...'; + break; } - /** - * Leverages native browser/VM stack frames to get proper details (e.g. - * filename, line + col number) for a single component in a component stack. We - * do this by: - * (1) throwing and catching an error in the function - this will be our - * control error. - * (2) calling the component which will eventually throw an error that we'll - * catch - this will be our sample error. - * (3) diffing the control and sample error stacks to find the stack frame - * which represents our component. - */ - function describeNativeComponentFrame(fn, construct) { - // If something asked for a stack inside a fake render, it should get ignored. - if (!fn || reentry) { - return ""; - } + content += ' ' + propName + '=' + propValue; + } - { - var frame = componentFrameCache.get(fn); + return indentation(indent) + '<' + type + content + '>\n'; +} - if (frame !== undefined) { - return frame; - } - } +function describeExpandedElement(type, props, rowPrefix) { + // This function tries to fit the props into a single line for non-essential elements. + // We also ignore children because we're not going deeper. + var remainingRowLength = maxRowLength - rowPrefix.length - type.length; // We add the properties to a set so we can choose later whether we'll put it on one + // line or multiple lines. - reentry = true; - var previousPrepareStackTrace = Error.prepareStackTrace; // $FlowFixMe[incompatible-type] It does accept undefined. + var properties = []; - Error.prepareStackTrace = undefined; - var previousDispatcher = null; + for (var propName in props) { + if (!props.hasOwnProperty(propName)) { + continue; + } - { - previousDispatcher = ReactSharedInternals.H; // Set the dispatcher in DEV because this might be call in the render function - // for warnings. - - ReactSharedInternals.H = null; - disableLogs(); - } - /** - * Finding a common stack frame between sample and control errors can be - * tricky given the different types and levels of stack trace truncation from - * different JS VMs. So instead we'll attempt to control what that common - * frame should be through this object method: - * Having both the sample and control errors be in the function under the - * `DescribeNativeComponentFrameRoot` property, + setting the `name` and - * `displayName` properties of the function ensures that a stack - * frame exists that has the method name `DescribeNativeComponentFrameRoot` in - * it for both control and sample stacks. - */ - - var RunInRootFrame = { - DetermineComponentFrameRoot: function () { - var control; + if (propName === 'children') { + // Ignored. + continue; + } - try { - // This should throw. - if (construct) { - // Something should be setting the props in the constructor. - var Fake = function () { - throw Error(); - }; // $FlowFixMe[prop-missing] - - Object.defineProperty(Fake.prototype, "props", { - set: function () { - // We use a throwing setter instead of frozen or non-writable props - // because that won't throw in a non-strict mode function. - throw Error(); - } - }); - - if (typeof Reflect === "object" && Reflect.construct) { - // We construct a different control for this case to include any extra - // frames added by the construct call. - try { - Reflect.construct(Fake, []); - } catch (x) { - control = x; - } + var maxLength = maxRowLength - rowPrefix.length - propName.length - 1; + var propValue = describePropValue(props[propName], maxLength); + remainingRowLength -= propName.length + propValue.length + 2; + properties.push(propName + '=' + propValue); + } - Reflect.construct(fn, [], Fake); - } else { - try { - Fake.call(); - } catch (x) { - control = x; - } // $FlowFixMe[prop-missing] found when upgrading Flow + if (properties.length === 0) { + return rowPrefix + '<' + type + '>\n'; + } else if (remainingRowLength > 0) { + // We can fit all on one row. + return rowPrefix + '<' + type + ' ' + properties.join(' ') + '>\n'; + } else { + // Split into one row per property: + return rowPrefix + '<' + type + '\n' + rowPrefix + ' ' + properties.join('\n' + rowPrefix + ' ') + '\n' + rowPrefix + '>\n'; + } +} - fn.call(Fake.prototype); - } - } else { - try { - throw Error(); - } catch (x) { - control = x; - } // TODO(luna): This will currently only throw if the function component - // tries to access React/ReactDOM/props. We should probably make this throw - // in simple components too - - var maybePromise = fn(); // If the function component returns a promise, it's likely an async - // component, which we don't yet support. Attach a noop catch handler to - // silence the error. - // TODO: Implement component stacks for async client components? - - if (maybePromise && typeof maybePromise.catch === "function") { - maybePromise.catch(function () {}); - } - } - } catch (sample) { - // This is inlined manually because closure doesn't do it for us. - if (sample && control && typeof sample.stack === "string") { - return [sample.stack, control.stack]; - } - } +function describePropertiesDiff(clientObject, serverObject, indent) { + var properties = ''; + var remainingServerProperties = assign({}, serverObject); - return [null, null]; - } - }; // $FlowFixMe[prop-missing] + for (var propName in clientObject) { + if (!clientObject.hasOwnProperty(propName)) { + continue; + } - RunInRootFrame.DetermineComponentFrameRoot.displayName = - "DetermineComponentFrameRoot"; - var namePropDescriptor = Object.getOwnPropertyDescriptor( - RunInRootFrame.DetermineComponentFrameRoot, - "name" - ); // Before ES6, the `name` property was not configurable. + delete remainingServerProperties[propName]; + var maxLength = maxRowLength - indent * 2 - propName.length - 2; + var clientValue = clientObject[propName]; + var clientPropValue = describeValue(clientValue, maxLength); - if (namePropDescriptor && namePropDescriptor.configurable) { - // V8 utilizes a function's `name` property when generating a stack trace. - Object.defineProperty( - RunInRootFrame.DetermineComponentFrameRoot, // Configurable properties can be updated even if its writable descriptor - // is set to `false`. - // $FlowFixMe[cannot-write] - "name", - { - value: "DetermineComponentFrameRoot" - } - ); - } + if (serverObject.hasOwnProperty(propName)) { + var serverValue = serverObject[propName]; + var serverPropValue = describeValue(serverValue, maxLength); + properties += added(indent) + propName + ': ' + clientPropValue + '\n'; + properties += removed(indent) + propName + ': ' + serverPropValue + '\n'; + } else { + properties += added(indent) + propName + ': ' + clientPropValue + '\n'; + } + } - try { - var _RunInRootFrame$Deter = - RunInRootFrame.DetermineComponentFrameRoot(), - sampleStack = _RunInRootFrame$Deter[0], - controlStack = _RunInRootFrame$Deter[1]; - - if (sampleStack && controlStack) { - // This extracts the first frame from the sample that isn't also in the control. - // Skipping one frame that we assume is the frame that calls the two. - var sampleLines = sampleStack.split("\n"); - var controlLines = controlStack.split("\n"); - var s = 0; - var c = 0; - - while ( - s < sampleLines.length && - !sampleLines[s].includes("DetermineComponentFrameRoot") - ) { - s++; - } + for (var _propName in remainingServerProperties) { + if (!remainingServerProperties.hasOwnProperty(_propName)) { + continue; + } - while ( - c < controlLines.length && - !controlLines[c].includes("DetermineComponentFrameRoot") - ) { - c++; - } // We couldn't find our intentionally injected common root frame, attempt - // to find another common root frame by search from the bottom of the - // control stack... - - if (s === sampleLines.length || c === controlLines.length) { - s = sampleLines.length - 1; - c = controlLines.length - 1; - - while (s >= 1 && c >= 0 && sampleLines[s] !== controlLines[c]) { - // We expect at least one stack frame to be shared. - // Typically this will be the root most one. However, stack frames may be - // cut off due to maximum stack limits. In this case, one maybe cut off - // earlier than the other. We assume that the sample is longer or the same - // and there for cut off earlier. So we should find the root most frame in - // the sample somewhere in the control. - c--; - } - } + var _maxLength = maxRowLength - indent * 2 - _propName.length - 2; - for (; s >= 1 && c >= 0; s--, c--) { - // Next we find the first one that isn't the same which should be the - // frame that called our sample function and the control. - if (sampleLines[s] !== controlLines[c]) { - // In V8, the first line is describing the message but other VMs don't. - // If we're about to return the first line, and the control is also on the same - // line, that's a pretty good indicator that our sample threw at same line as - // the control. I.e. before we entered the sample frame. So we ignore this result. - // This can happen if you passed a class to function component, or non-function. - if (s !== 1 || c !== 1) { - do { - s--; - c--; // We may still have similar intermediate frames from the construct call. - // The next one that isn't the same should be our match though. - - if (c < 0 || sampleLines[s] !== controlLines[c]) { - // V8 adds a "new" prefix for native classes. Let's remove it to make it prettier. - var _frame = - "\n" + sampleLines[s].replace(" at new ", " at "); // If our component frame is labeled "" - // but we have a user-provided "displayName" - // splice it in to make the stack more readable. - - if (fn.displayName && _frame.includes("")) { - _frame = _frame.replace("", fn.displayName); - } + var _serverValue = remainingServerProperties[_propName]; - if (true) { - if (typeof fn === "function") { - componentFrameCache.set(fn, _frame); - } - } // Return the line we found. + var _serverPropValue = describeValue(_serverValue, _maxLength); - return _frame; - } - } while (s >= 1 && c >= 0); - } + properties += removed(indent) + _propName + ': ' + _serverPropValue + '\n'; + } - break; - } - } - } - } finally { - reentry = false; + return properties; +} - { - ReactSharedInternals.H = previousDispatcher; - reenableLogs(); - } +function describeElementDiff(type, clientProps, serverProps, indent) { + var content = ''; // Maps any previously unmatched lower case server prop name to its full prop name - Error.prepareStackTrace = previousPrepareStackTrace; - } // Fallback to just using the name if we couldn't make it throw. + var serverPropNames = new Map(); - var name = fn ? fn.displayName || fn.name : ""; - var syntheticFrame = name ? describeBuiltInComponentFrame(name) : ""; + for (var propName in serverProps) { + if (!serverProps.hasOwnProperty(propName)) { + continue; + } - { - if (typeof fn === "function") { - componentFrameCache.set(fn, syntheticFrame); - } + serverPropNames.set(propName.toLowerCase(), propName); + } + + if (serverPropNames.size === 1 && serverPropNames.has('children')) { + content += describeExpandedElement(type, clientProps, indentation(indent)); + } else { + for (var _propName2 in clientProps) { + if (!clientProps.hasOwnProperty(_propName2)) { + continue; } - return syntheticFrame; - } + if (_propName2 === 'children') { + // Handled below. + continue; + } - function describeComponentFrame(name) { - return "\n in " + (name || "Unknown"); - } + var maxLength = maxRowLength - (indent + 1) * 2 - _propName2.length - 1; + var serverPropName = serverPropNames.get(_propName2.toLowerCase()); - function describeClassComponentFrame(ctor) { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(ctor, true); + if (serverPropName !== undefined) { + serverPropNames.delete(_propName2.toLowerCase()); // There's a diff here. + + var clientValue = clientProps[_propName2]; + var serverValue = serverProps[serverPropName]; + var clientPropValue = describePropValue(clientValue, maxLength); + var serverPropValue = describePropValue(serverValue, maxLength); + + if (typeof clientValue === 'object' && clientValue !== null && typeof serverValue === 'object' && serverValue !== null && objectName(clientValue) === 'Object' && objectName(serverValue) === 'Object' && ( // Only do the diff if the object has a lot of keys or was shortened. + Object.keys(clientValue).length > 2 || Object.keys(serverValue).length > 2 || clientPropValue.indexOf('...') > -1 || serverPropValue.indexOf('...') > -1)) { + // We're comparing two plain objects. We can diff the nested objects instead. + content += indentation(indent + 1) + _propName2 + '={{\n' + describePropertiesDiff(clientValue, serverValue, indent + 2) + indentation(indent + 1) + '}}\n'; + } else { + content += added(indent + 1) + _propName2 + '=' + clientPropValue + '\n'; + content += removed(indent + 1) + _propName2 + '=' + serverPropValue + '\n'; + } } else { - return describeFunctionComponentFrame(ctor); + // Considered equal. + content += indentation(indent + 1) + _propName2 + '=' + describePropValue(clientProps[_propName2], maxLength) + '\n'; } } - function describeFunctionComponentFrame(fn) { - if (enableComponentStackLocations) { - return describeNativeComponentFrame(fn, false); - } else { - if (!fn) { - return ""; - } - var name = fn.displayName || fn.name || null; - return describeComponentFrame(name); + serverPropNames.forEach(function (propName) { + if (propName === 'children') { + // Handled below. + return; } + + var maxLength = maxRowLength - (indent + 1) * 2 - propName.length - 1; + content += removed(indent + 1) + propName + '=' + describePropValue(serverProps[propName], maxLength) + '\n'; + }); + + if (content === '') { + // No properties + content = indentation(indent) + '<' + type + '>\n'; + } else { + // Had properties + content = indentation(indent) + '<' + type + '\n' + content + indentation(indent) + '>\n'; } + } - function describeFiber(fiber) { - switch (fiber.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - return describeBuiltInComponentFrame(fiber.type); + var serverChildren = serverProps.children; + var clientChildren = clientProps.children; - case LazyComponent: - return describeBuiltInComponentFrame("Lazy"); + if (typeof serverChildren === 'string' || typeof serverChildren === 'number' || typeof serverChildren === 'bigint') { + // There's a diff of the children. + // $FlowFixMe[unsafe-addition] + var serverText = '' + serverChildren; + var clientText = ''; - case SuspenseComponent: - return describeBuiltInComponentFrame("Suspense"); + if (typeof clientChildren === 'string' || typeof clientChildren === 'number' || typeof clientChildren === 'bigint') { + // $FlowFixMe[unsafe-addition] + clientText = '' + clientChildren; + } - case SuspenseListComponent: - return describeBuiltInComponentFrame("SuspenseList"); + content += describeTextDiff(clientText, serverText, indent + 1); + } else if (typeof clientChildren === 'string' || typeof clientChildren === 'number' || typeof clientChildren === 'bigint') { + // The client has children but it's not considered a difference from the server. + // $FlowFixMe[unsafe-addition] + content += describeTextDiff('' + clientChildren, undefined, indent + 1); + } - case FunctionComponent: - case SimpleMemoComponent: - return describeFunctionComponentFrame(fiber.type); + return content; +} - case ForwardRef: - return describeFunctionComponentFrame(fiber.type.render); +function describeSiblingFiber(fiber, indent) { + var type = describeFiberType(fiber); - case ClassComponent: - return describeClassComponentFrame(fiber.type); + if (type === null) { + // Skip this type of fiber. We currently treat this as a fragment + // so it's just part of the parent's children. + var flatContent = ''; + var childFiber = fiber.child; - default: - return ""; - } + while (childFiber) { + flatContent += describeSiblingFiber(childFiber, indent); + childFiber = childFiber.sibling; } - function getStackByFiberInDevAndProd(workInProgress) { - try { - var info = ""; - var node = workInProgress; + return flatContent; + } - do { - info += describeFiber(node); + return indentation(indent) + '<' + type + '>' + '\n'; +} - if (true) { - // Add any Server Component stack frames in reverse order. - var debugInfo = node._debugInfo; +function describeNode(node, indent) { + var skipToNode = findNotableNode(node, indent); - if (debugInfo) { - for (var i = debugInfo.length - 1; i >= 0; i--) { - var entry = debugInfo[i]; + if (skipToNode !== node && (node.children.length !== 1 || node.children[0] !== skipToNode)) { + return indentation(indent) + '...\n' + describeNode(skipToNode, indent + 1); + } // Prefix with any server components for context - if (typeof entry.name === "string") { - info += describeDebugInfoFrame(entry.name, entry.env); - } - } - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null - node = node.return; - } while (node); + var parentContent = ''; + var debugInfo = node.fiber._debugInfo; - return info; - } catch (x) { - return "\nError generating stack: " + x.message + "\n" + x.stack; + if (debugInfo) { + for (var i = 0; i < debugInfo.length; i++) { + var serverComponentName = debugInfo[i].name; + + if (typeof serverComponentName === 'string') { + parentContent += indentation(indent) + '<' + serverComponentName + '>' + '\n'; + indent++; } } + } // Self - var CapturedStacks = new WeakMap(); - function createCapturedValueAtFiber(value, source) { - // If the value is an error, call this function immediately after it is thrown - // so the stack is accurate. - var stack; - if (typeof value === "object" && value !== null) { - var capturedStack = CapturedStacks.get(value); + var selfContent = ''; // We use the pending props since we might be generating a diff before the complete phase + // when something throws. - if (typeof capturedStack === "string") { - stack = capturedStack; - } else { - stack = getStackByFiberInDevAndProd(source); - CapturedStacks.set(value, stack); + var clientProps = node.fiber.pendingProps; + + if (node.fiber.tag === HostText) { + // Text Node + selfContent = describeTextDiff(clientProps, node.serverProps, indent); + } else { + var type = describeFiberType(node.fiber); + + if (type !== null) { + // Element Node + if (node.serverProps === undefined) { + // Just a reference node for context. + selfContent = describeCollapsedElement(type, clientProps, indent); + indent++; + } else if (node.serverProps === null) { + selfContent = describeExpandedElement(type, clientProps, added(indent)); // If this was an insertion we won't step down further. Any tail + // are considered siblings so we don't indent. + // TODO: Model this a little better. + } else if (typeof node.serverProps === 'string') { + { + error('Should not have matched a non HostText fiber to a Text node. This is a bug in React.'); } } else { - stack = getStackByFiberInDevAndProd(source); + selfContent = describeElementDiff(type, clientProps, node.serverProps, indent); + indent++; } - - return { - value: value, - source: source, - stack: stack - }; } - function createCapturedValueFromError(value, stack) { - if (typeof stack === "string") { - CapturedStacks.set(value, stack); - } + } // Compute children - return { - value: value, - source: null, - stack: stack - }; + + var childContent = ''; + var childFiber = node.fiber.child; + var diffIdx = 0; + + while (childFiber && diffIdx < node.children.length) { + var childNode = node.children[diffIdx]; + + if (childNode.fiber === childFiber) { + // This was a match in the diff. + childContent += describeNode(childNode, indent); + diffIdx++; + } else { + // This is an unrelated previous sibling. + childContent += describeSiblingFiber(childFiber, indent); } - var contextStackCursor = createCursor(null); - var contextFiberStackCursor = createCursor(null); - var rootInstanceStackCursor = createCursor(null); // Represents the nearest host transition provider (in React DOM, a ) - // NOTE: Since forms cannot be nested, and this feature is only implemented by - // React DOM, we don't technically need this to be a stack. It could be a single - // module variable instead. - - var hostTransitionProviderCursor = createCursor(null); // TODO: This should initialize to NotPendingTransition, a constant - // imported from the fiber config. However, because of a cycle in the module - // graph, that value isn't defined during this module's initialization. I can't - // think of a way to work around this without moving that value out of the - // fiber config. For now, the "no provider" case is handled when reading, - // inside useHostTransitionStatus. - - var HostTransitionContext = { - $$typeof: REACT_CONTEXT_TYPE, - Provider: null, - Consumer: null, - _currentValue: null, - _currentValue2: null, - _threadCount: 0 - }; + childFiber = childFiber.sibling; + } - function requiredContext(c) { - { - if (c === null) { - error( - "Expected host context to exist. This error is likely caused by a bug " + - "in React. Please file an issue." - ); - } - } + if (childFiber && node.children.length > 0) { + // If we had any further siblings after the last mismatch, we can't be sure if it's + // actually a valid match since it might not have found a match. So we exclude next + // siblings to avoid confusion. + childContent += indentation(indent) + '...' + '\n'; + } // Deleted tail nodes + + + var serverTail = node.serverTail; - return c; - } + for (var _i = 0; _i < serverTail.length; _i++) { + var tailNode = serverTail[_i]; - function getRootHostContainer() { - var rootInstance = requiredContext(rootInstanceStackCursor.current); - return rootInstance; + if (typeof tailNode === 'string') { + // Removed text node + childContent += removed(indent) + describeTextNode(tailNode, maxRowLength - indent * 2) + '\n'; + } else { + // Removed element + childContent += describeExpandedElement(tailNode.type, tailNode.props, removed(indent)); } + } - function pushHostContainer(fiber, nextRootInstance) { - // Push current root instance onto the stack; - // This allows us to reset root when portals are popped. - push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it. - // This enables us to pop only Fibers that provide unique contexts. + return parentContent + selfContent + childContent; +} - push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack. - // However, we can't just call getRootHostContext() and push it because - // we'd have a different number of entries on the stack depending on - // whether getRootHostContext() throws somewhere in renderer code or not. - // So we push an empty value first. This lets us safely unwind on errors. +function describeDiff(rootNode) { + try { + return '\n\n' + describeNode(rootNode, 0); + } catch (x) { + return ''; + } +} - push(contextStackCursor, null, fiber); - var nextRootContext = getRootHostContext(); // Now that we know this function doesn't throw, replace it. +var isHydrating = false; // This flag allows for warning supression when we expect there to be mismatches - pop(contextStackCursor, fiber); - push(contextStackCursor, nextRootContext, fiber); - } +var hydrationDiffRootDEV = null; // Hydration errors that were thrown inside this boundary - function popHostContainer(fiber) { - pop(contextStackCursor, fiber); - pop(contextFiberStackCursor, fiber); - pop(rootInstanceStackCursor, fiber); - } +var hydrationErrors = null; - function getHostContext() { - var context = requiredContext(contextStackCursor.current); - return context; - } +function prepareToHydrateHostInstance(fiber, hostContext) { + { + throw new Error('Expected prepareToHydrateHostInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - function pushHostContext(fiber) { - if (enableAsyncActions) { - var stateHook = fiber.memoizedState; +function prepareToHydrateHostTextInstance(fiber) { + { + throw new Error('Expected prepareToHydrateHostTextInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - if (stateHook !== null) { - // Only provide context if this fiber has been upgraded by a host - // transition. We use the same optimization for regular host context below. - push(hostTransitionProviderCursor, fiber, fiber); - } - } +function prepareToHydrateHostSuspenseInstance(fiber) { + { + throw new Error('Expected prepareToHydrateHostSuspenseInstance() to never be called. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } +} - var context = requiredContext(contextStackCursor.current); - var nextContext = getChildHostContext(context, fiber.type); // Don't push this Fiber's context unless it's unique. +function popHydrationState(fiber) { + { + return false; + } +} - if (context !== nextContext) { - // Track the context and the Fiber that provided it. - // This enables us to pop only Fibers that provide unique contexts. - push(contextFiberStackCursor, fiber, fiber); - push(contextStackCursor, nextContext, fiber); - } - } +function upgradeHydrationErrorsToRecoverable() { + if (hydrationErrors !== null) { + // Successfully completed a forced client render. The errors that occurred + // during the hydration attempt are now recovered. We will log them in + // commit phase, once the entire tree has finished. + queueRecoverableErrors(hydrationErrors); + hydrationErrors = null; + } +} - function popHostContext(fiber) { - if (contextFiberStackCursor.current === fiber) { - // Do not pop unless this Fiber provided the current context. - // pushHostContext() only pushes Fibers that provide unique contexts. - pop(contextStackCursor, fiber); - pop(contextFiberStackCursor, fiber); - } +function getIsHydrating() { + return isHydrating; +} - if (enableAsyncActions) { - if (hostTransitionProviderCursor.current === fiber) { - // Do not pop unless this Fiber provided the current context. This is mostly - // a performance optimization, but conveniently it also prevents a potential - // data race where a host provider is upgraded (i.e. memoizedState becomes - // non-null) during a concurrent event. This is a bit of a flaw in the way - // we upgrade host components, but because we're accounting for it here, it - // should be fine. - pop(hostTransitionProviderCursor, fiber); // When popping the transition provider, we reset the context value back - // to `null`. We can do this because you're not allowd to nest forms. If - // we allowed for multiple nested host transition providers, then we'd - // need to reset this to the parent provider's status. +function queueHydrationError(error) { + if (hydrationErrors === null) { + hydrationErrors = [error]; + } else { + hydrationErrors.push(error); + } +} +function emitPendingHydrationWarnings() { + { + // If we haven't yet thrown any hydration errors by the time we reach the end we've successfully + // hydrated, however, we might still have DEV-only mismatches that we log now. + var diffRoot = hydrationDiffRootDEV; - { - HostTransitionContext._currentValue = null; - } - } - } + if (diffRoot !== null) { + hydrationDiffRootDEV = null; + var diff = describeDiff(diffRoot); + + error("A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. This won't be patched up. " + 'This can happen if a SSR-ed Client Component used:\n' + '\n' + "- A server/client branch `if (typeof window !== 'undefined')`.\n" + "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + "- Date formatting in a user's locale which doesn't match the server.\n" + '- External changing data without sending a snapshot of it along with the HTML.\n' + '- Invalid HTML tag nesting.\n' + '\n' + 'It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n' + '\n' + '%s%s', 'https://react.dev/link/hydration-mismatch', diff); } + } +} - var maxRowLength = 120; - var idealDepth = 15; +// we wait until the current render is over (either finished or interrupted) +// before adding it to the fiber/hook queue. Push to this array so we can +// access the queue, fiber, update, et al later. + +var concurrentQueues = []; +var concurrentQueuesIndex = 0; +var concurrentlyUpdatedLanes = NoLanes; +function finishQueueingConcurrentUpdates() { + var endIndex = concurrentQueuesIndex; + concurrentQueuesIndex = 0; + concurrentlyUpdatedLanes = NoLanes; + var i = 0; + + while (i < endIndex) { + var fiber = concurrentQueues[i]; + concurrentQueues[i++] = null; + var queue = concurrentQueues[i]; + concurrentQueues[i++] = null; + var update = concurrentQueues[i]; + concurrentQueues[i++] = null; + var lane = concurrentQueues[i]; + concurrentQueues[i++] = null; + + if (queue !== null && update !== null) { + var pending = queue.pending; - function findNotableNode(node, indent) { - if ( - node.serverProps === undefined && - node.serverTail.length === 0 && - node.children.length === 1 && - node.distanceFromLeaf > 3 && - node.distanceFromLeaf > idealDepth - indent - ) { - // This is not an interesting node for contextual purposes so we can skip it. - var child = node.children[0]; - return findNotableNode(child, indent); + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; } - return node; + queue.pending = update; } - function indentation(indent) { - return " " + " ".repeat(indent); + if (lane !== NoLane) { + markUpdateLaneFromFiberToRoot(fiber, update, lane); } + } +} +function getConcurrentlyUpdatedLanes() { + return concurrentlyUpdatedLanes; +} - function added(indent) { - return "+ " + " ".repeat(indent); - } +function enqueueUpdate$1(fiber, queue, update, lane) { + // Don't update the `childLanes` on the return path yet. If we already in + // the middle of rendering, wait until after it has completed. + concurrentQueues[concurrentQueuesIndex++] = fiber; + concurrentQueues[concurrentQueuesIndex++] = queue; + concurrentQueues[concurrentQueuesIndex++] = update; + concurrentQueues[concurrentQueuesIndex++] = lane; + concurrentlyUpdatedLanes = mergeLanes(concurrentlyUpdatedLanes, lane); // The fiber's `lane` field is used in some places to check if any work is + // scheduled, to perform an eager bailout, so we need to update it immediately. + // TODO: We should probably move this to the "shared" queue instead. + + fiber.lanes = mergeLanes(fiber.lanes, lane); + var alternate = fiber.alternate; + + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, lane); + } +} - function removed(indent) { - return "- " + " ".repeat(indent); - } +function enqueueConcurrentHookUpdate(fiber, queue, update, lane) { + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); + return getRootForUpdatedFiber(fiber); +} +function enqueueConcurrentHookUpdateAndEagerlyBailout(fiber, queue, update) { + // This function is used to queue an update that doesn't need a rerender. The + // only reason we queue it is in case there's a subsequent higher priority + // update that causes it to be rebased. + var lane = NoLane; + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); // Usually we can rely on the upcoming render phase to process the concurrent + // queue. However, since this is a bail out, we're not scheduling any work + // here. So the update we just queued will leak until something else happens + // to schedule work (if ever). + // + // Check if we're currently in the middle of rendering a tree, and if not, + // process the queue immediately to prevent a leak. + + var isConcurrentlyRendering = getWorkInProgressRoot() !== null; + + if (!isConcurrentlyRendering) { + finishQueueingConcurrentUpdates(); + } +} +function enqueueConcurrentClassUpdate(fiber, queue, update, lane) { + var concurrentQueue = queue; + var concurrentUpdate = update; + enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); + return getRootForUpdatedFiber(fiber); +} +function enqueueConcurrentRenderForLane(fiber, lane) { + enqueueUpdate$1(fiber, null, null, lane); + return getRootForUpdatedFiber(fiber); +} // Calling this function outside this module should only be done for backwards +// compatibility and should always be accompanied by a warning. + +function unsafe_markUpdateLaneFromFiberToRoot(sourceFiber, lane) { + // NOTE: For Hyrum's Law reasons, if an infinite update loop is detected, it + // should throw before `markUpdateLaneFromFiberToRoot` is called. But this is + // undefined behavior and we can change it if we need to; it just so happens + // that, at the time of this writing, there's an internal product test that + // happens to rely on this. + var root = getRootForUpdatedFiber(sourceFiber); + markUpdateLaneFromFiberToRoot(sourceFiber, null, lane); + return root; +} - function describeFiberType(fiber) { - switch (fiber.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - return fiber.type; +function markUpdateLaneFromFiberToRoot(sourceFiber, update, lane) { + // Update the source fiber's lanes + sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane); + var alternate = sourceFiber.alternate; - case LazyComponent: - return "Lazy"; + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, lane); + } // Walk the parent path to the root and update the child lanes. - case SuspenseComponent: - return "Suspense"; - case SuspenseListComponent: - return "SuspenseList"; + var isHidden = false; + var parent = sourceFiber.return; + var node = sourceFiber; - case FunctionComponent: - case SimpleMemoComponent: - var fn = fiber.type; - return fn.displayName || fn.name || null; + while (parent !== null) { + parent.childLanes = mergeLanes(parent.childLanes, lane); + alternate = parent.alternate; - case ForwardRef: - var render = fiber.type.render; - return render.displayName || render.name || null; + if (alternate !== null) { + alternate.childLanes = mergeLanes(alternate.childLanes, lane); + } - case ClassComponent: - var ctr = fiber.type; - return ctr.displayName || ctr.name || null; + if (parent.tag === OffscreenComponent) { + // Check if this offscreen boundary is currently hidden. + // + // The instance may be null if the Offscreen parent was unmounted. Usually + // the parent wouldn't be reachable in that case because we disconnect + // fibers from the tree when they are deleted. However, there's a weird + // edge case where setState is called on a fiber that was interrupted + // before it ever mounted. Because it never mounts, it also never gets + // deleted. Because it never gets deleted, its return pointer never gets + // disconnected. Which means it may be attached to a deleted Offscreen + // parent node. (This discovery suggests it may be better for memory usage + // if we don't attach the `return` pointer until the commit phase, though + // in order to do that we'd need some other way to track the return + // pointer during the initial render, like on the stack.) + // + // This case is always accompanied by a warning, but we still need to + // account for it. (There may be other cases that we haven't discovered, + // too.) + var offscreenInstance = parent.stateNode; - default: - // Skip - return null; + if (offscreenInstance !== null && !(offscreenInstance._visibility & OffscreenVisible)) { + isHidden = true; } } - var needsEscaping = /["'&<>\n\t]/; + node = parent; + parent = parent.return; + } - function describeTextNode(content, maxLength) { - if (needsEscaping.test(content)) { - var encoded = JSON.stringify(content); + if (isHidden && update !== null && node.tag === HostRoot) { + var root = node.stateNode; + markHiddenUpdate(root, update, lane); + } +} - if (encoded.length > maxLength - 2) { - if (maxLength < 8) { - return '{"..."}'; - } +function getRootForUpdatedFiber(sourceFiber) { + // TODO: We will detect and infinite update loop and throw even if this fiber + // has already unmounted. This isn't really necessary but it happens to be the + // current behavior we've used for several release cycles. Consider not + // performing this check if the updated fiber already unmounted, since it's + // not possible for that to cause an infinite update loop. + throwIfInfiniteUpdateLoopDetected(); // When a setState happens, we must ensure the root is scheduled. Because + // update queues do not have a backpointer to the root, the only way to do + // this currently is to walk up the return path. This used to not be a big + // deal because we would have to walk up the return path to set + // the `childLanes`, anyway, but now those two traversals happen at + // different times. + // TODO: Consider adding a `root` backpointer on the update queue. + + detectUpdateOnUnmountedFiber(sourceFiber, sourceFiber); + var node = sourceFiber; + var parent = node.return; + + while (parent !== null) { + detectUpdateOnUnmountedFiber(sourceFiber, node); + node = parent; + parent = node.return; + } + + return node.tag === HostRoot ? node.stateNode : null; +} - return "{" + encoded.slice(0, maxLength - 7) + '..."}'; - } +function detectUpdateOnUnmountedFiber(sourceFiber, parent) { + { + var alternate = parent.alternate; - return "{" + encoded + "}"; - } else { - if (content.length > maxLength) { - if (maxLength < 5) { - return '{"..."}'; - } + if (alternate === null && (parent.flags & (Placement | Hydrating)) !== NoFlags$1) { + warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); + } + } +} - return content.slice(0, maxLength - 3) + "..."; - } +// there's only a single root, but we do support multi root apps, hence this +// extra complexity. But this module is optimized for the single root case. + +var firstScheduledRoot = null; +var lastScheduledRoot = null; // Used to prevent redundant mircotasks from being scheduled. + +var didScheduleMicrotask = false; // `act` "microtasks" are scheduled on the `act` queue instead of an actual +// microtask, so we have to dedupe those separately. This wouldn't be an issue +// if we required all `act` calls to be awaited, which we might in the future. + +var didScheduleMicrotask_act = false; // Used to quickly bail out of flushSync if there's no sync work to do. + +var mightHavePendingSyncWork = false; +var isFlushingWork = false; +var currentEventTransitionLane = NoLane; +function ensureRootIsScheduled(root) { + // This function is called whenever a root receives an update. It does two + // things 1) it ensures the root is in the root schedule, and 2) it ensures + // there's a pending microtask to process the root schedule. + // + // Most of the actual scheduling logic does not happen until + // `scheduleTaskForRootDuringMicrotask` runs. + // Add the root to the schedule + if (root === lastScheduledRoot || root.next !== null) ; else { + if (lastScheduledRoot === null) { + firstScheduledRoot = lastScheduledRoot = root; + } else { + lastScheduledRoot.next = root; + lastScheduledRoot = root; + } + } // Any time a root received an update, we set this to true until the next time + // we process the schedule. If it's false, then we can quickly exit flushSync + // without consulting the schedule. + + + mightHavePendingSyncWork = true; // At the end of the current event, go through each of the roots and ensure + // there's a task scheduled for each one at the correct priority. + + if (ReactSharedInternals.actQueue !== null) { + // We're inside an `act` scope. + if (!didScheduleMicrotask_act) { + didScheduleMicrotask_act = true; + scheduleImmediateTask(processRootScheduleInMicrotask); + } + } else { + if (!didScheduleMicrotask) { + didScheduleMicrotask = true; + scheduleImmediateTask(processRootScheduleInMicrotask); + } + } + + if (!enableDeferRootSchedulingToMicrotask) { + // While this flag is disabled, we schedule the render task immediately + // instead of waiting a microtask. + // TODO: We need to land enableDeferRootSchedulingToMicrotask ASAP to + // unblock additional features we have planned. + scheduleTaskForRootDuringMicrotask(root, now$1()); + } + + if (ReactSharedInternals.isBatchingLegacy && root.tag === LegacyRoot) { + // Special `act` case: Record whenever a legacy update is scheduled. + ReactSharedInternals.didScheduleLegacyUpdate = true; + } +} +function flushSyncWorkOnAllRoots() { + // This is allowed to be called synchronously, but the caller should check + // the execution context first. + flushSyncWorkAcrossRoots_impl(false); +} +function flushSyncWorkOnLegacyRootsOnly() { + // This is allowed to be called synchronously, but the caller should check + // the execution context first. + { + flushSyncWorkAcrossRoots_impl(true); + } +} - return content; - } - } +function flushSyncWorkAcrossRoots_impl(onlyLegacy) { + if (isFlushingWork) { + // Prevent reentrancy. + // TODO: Is this overly defensive? The callers must check the execution + // context first regardless. + return; + } - function describeTextDiff(clientText, serverProps, indent) { - var maxLength = maxRowLength - indent * 2; + if (!mightHavePendingSyncWork) { + // Fast path. There's no sync work to do. + return; + } // There may or may not be synchronous work scheduled. Let's check. - if (serverProps === null) { - return added(indent) + describeTextNode(clientText, maxLength) + "\n"; - } else if (typeof serverProps === "string") { - var serverText = serverProps; - var firstDiff = 0; - for ( - ; - firstDiff < serverText.length && firstDiff < clientText.length; - firstDiff++ - ) { - if ( - serverText.charCodeAt(firstDiff) !== - clientText.charCodeAt(firstDiff) - ) { - break; - } - } + var didPerformSomeWork; + isFlushingWork = true; - if (firstDiff > maxLength - 8 && firstDiff > 10) { - // The first difference between the two strings would be cut off, so cut off in - // the beginning instead. - clientText = "..." + clientText.slice(firstDiff - 8); - serverText = "..." + serverText.slice(firstDiff - 8); - } + do { + didPerformSomeWork = false; + var root = firstScheduledRoot; - return ( - added(indent) + - describeTextNode(clientText, maxLength) + - "\n" + - removed(indent) + - describeTextNode(serverText, maxLength) + - "\n" - ); - } else { - return ( - indentation(indent) + describeTextNode(clientText, maxLength) + "\n" - ); + while (root !== null) { + if (onlyLegacy && (root.tag !== LegacyRoot)) ; else { + var workInProgressRoot = getWorkInProgressRoot(); + var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); + var nextLanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); + + if (includesSyncLane(nextLanes)) { + // This root has pending sync work. Flush it now. + didPerformSomeWork = true; + performSyncWorkOnRoot(root, nextLanes); + } } - } - function objectName(object) { - // $FlowFixMe[method-unbinding] - var name = Object.prototype.toString.call(object); - return name.replace(/^\[object (.*)\]$/, function (m, p0) { - return p0; - }); + root = root.next; } + } while (didPerformSomeWork); - function describeValue(value, maxLength) { - switch (typeof value) { - case "string": { - var encoded = JSON.stringify(value); + isFlushingWork = false; +} - if (encoded.length > maxLength) { - if (maxLength < 5) { - return '"..."'; - } +function processRootScheduleInMicrotask() { + // This function is always called inside a microtask. It should never be + // called synchronously. + didScheduleMicrotask = false; - return encoded.slice(0, maxLength - 4) + '..."'; - } + { + didScheduleMicrotask_act = false; + } // We'll recompute this as we iterate through all the roots and schedule them. - return encoded; - } - case "object": { - if (value === null) { - return "null"; - } + mightHavePendingSyncWork = false; + var currentTime = now$1(); + var prev = null; + var root = firstScheduledRoot; - if (isArray(value)) { - return "[...]"; - } + while (root !== null) { + var next = root.next; - if (value.$$typeof === REACT_ELEMENT_TYPE) { - var type = getComponentNameFromType(value.type); - return type ? "<" + type + ">" : "<...>"; - } + if (currentEventTransitionLane !== NoLane && shouldAttemptEagerTransition()) { + // A transition was scheduled during an event, but we're going to try to + // render it synchronously anyway. We do this during a popstate event to + // preserve the scroll position of the previous page. + upgradePendingLaneToSync(root, currentEventTransitionLane); + } - var name = objectName(value); + var nextLanes = scheduleTaskForRootDuringMicrotask(root, currentTime); - if (name === "Object") { - var properties = ""; - maxLength -= 2; + if (nextLanes === NoLane) { + // This root has no more pending work. Remove it from the schedule. To + // guard against subtle reentrancy bugs, this microtask is the only place + // we do this — you can add roots to the schedule whenever, but you can + // only remove them here. + // Null this out so we know it's been removed from the schedule. + root.next = null; - for (var propName in value) { - if (!value.hasOwnProperty(propName)) { - continue; - } + if (prev === null) { + // This is the new head of the list + firstScheduledRoot = next; + } else { + prev.next = next; + } - var jsonPropName = JSON.stringify(propName); + if (next === null) { + // This is the new tail of the list + lastScheduledRoot = prev; + } + } else { + // This root still has work. Keep it in the list. + prev = root; - if (jsonPropName !== '"' + propName + '"') { - propName = jsonPropName; - } + if (includesSyncLane(nextLanes)) { + mightHavePendingSyncWork = true; + } + } - maxLength -= propName.length - 2; - var propValue = describeValue( - value[propName], - maxLength < 15 ? maxLength : 15 - ); - maxLength -= propValue.length; + root = next; + } - if (maxLength < 0) { - properties += properties === "" ? "..." : ", ..."; - break; - } + currentEventTransitionLane = NoLane; // At the end of the microtask, flush any pending synchronous work. This has + // to come at the end, because it does actual rendering work that might throw. - properties += - (properties === "" ? "" : ",") + propName + ":" + propValue; - } + flushSyncWorkOnAllRoots(); +} - return "{" + properties + "}"; - } +function scheduleTaskForRootDuringMicrotask(root, currentTime) { + // This function is always called inside a microtask, or at the very end of a + // rendering task right before we yield to the main thread. It should never be + // called synchronously. + // + // TODO: Unless enableDeferRootSchedulingToMicrotask is off. We need to land + // that ASAP to unblock additional features we have planned. + // + // This function also never performs React work synchronously; it should + // only schedule work to be performed later, in a separate task or microtask. + // Check if any lanes are being starved by other work. If so, mark them as + // expired so we know to work on those next. + markStarvedLanesAsExpired(root, currentTime); // Determine the next lanes to work on, and their priority. + + var workInProgressRoot = getWorkInProgressRoot(); + var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); + var nextLanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); + var existingCallbackNode = root.callbackNode; + + if ( // Check if there's nothing to work on + nextLanes === NoLanes || // If this root is currently suspended and waiting for data to resolve, don't + // schedule a task to render it. We'll either wait for a ping, or wait to + // receive an update. + // + // Suspended render phase + root === workInProgressRoot && isWorkLoopSuspendedOnData() || // Suspended commit phase + root.cancelPendingCommit !== null) { + // Fast path: There's nothing to work on. + if (existingCallbackNode !== null) { + cancelCallback(existingCallbackNode); + } + + root.callbackNode = null; + root.callbackPriority = NoLane; + return NoLane; + } // Schedule a new callback in the host environment. + + + if (includesSyncLane(nextLanes)) { + // Synchronous work is always flushed at the end of the microtask, so we + // don't need to schedule an additional task. + if (existingCallbackNode !== null) { + cancelCallback(existingCallbackNode); + } + + root.callbackPriority = SyncLane; + root.callbackNode = null; + return SyncLane; + } else { + // We use the highest priority lane to represent the priority of the callback. + var existingCallbackPriority = root.callbackPriority; + var newCallbackPriority = getHighestPriorityLane(nextLanes); + + if (newCallbackPriority === existingCallbackPriority && // Special case related to `act`. If the currently scheduled task is a + // Scheduler task, rather than an `act` task, cancel it and re-schedule + // on the `act` queue. + !(ReactSharedInternals.actQueue !== null && existingCallbackNode !== fakeActCallbackNode$1)) { + // The priority hasn't changed. We can reuse the existing task. + return newCallbackPriority; + } else { + // Cancel the existing callback. We'll schedule a new one below. + cancelCallback(existingCallbackNode); + } + + var schedulerPriorityLevel; + + switch (lanesToEventPriority(nextLanes)) { + case DiscreteEventPriority: + schedulerPriorityLevel = ImmediatePriority; + break; + + case ContinuousEventPriority: + schedulerPriorityLevel = UserBlockingPriority; + break; + + case DefaultEventPriority: + schedulerPriorityLevel = NormalPriority$1; + break; + + case IdleEventPriority: + schedulerPriorityLevel = IdlePriority; + break; + + default: + schedulerPriorityLevel = NormalPriority$1; + break; + } + + var newCallbackNode = scheduleCallback$2(schedulerPriorityLevel, performConcurrentWorkOnRoot.bind(null, root)); + root.callbackPriority = newCallbackPriority; + root.callbackNode = newCallbackNode; + return newCallbackPriority; + } +} - return name; - } +function getContinuationForRoot(root, originalCallbackNode) { + // This is called at the end of `performConcurrentWorkOnRoot` to determine + // if we need to schedule a continuation task. + // + // Usually `scheduleTaskForRootDuringMicrotask` only runs inside a microtask; + // however, since most of the logic for determining if we need a continuation + // versus a new task is the same, we cheat a bit and call it here. This is + // only safe to do because we know we're at the end of the browser task. + // So although it's not an actual microtask, it might as well be. + scheduleTaskForRootDuringMicrotask(root, now$1()); + + if (root.callbackNode === originalCallbackNode) { + // The task node scheduled for this root is the same one that's + // currently executed. Need to return a continuation. + return performConcurrentWorkOnRoot.bind(null, root); + } + + return null; +} +var fakeActCallbackNode$1 = {}; + +function scheduleCallback$2(priorityLevel, callback) { + if (ReactSharedInternals.actQueue !== null) { + // Special case: We're inside an `act` scope (a testing utility). + // Instead of scheduling work in the host environment, add it to a + // fake internal queue that's managed by the `act` implementation. + ReactSharedInternals.actQueue.push(callback); + return fakeActCallbackNode$1; + } else { + return scheduleCallback$3(priorityLevel, callback); + } +} - case "function": { - var _name = value.displayName || value.name; +function cancelCallback(callbackNode) { + if (callbackNode === fakeActCallbackNode$1) ; else if (callbackNode !== null) { + cancelCallback$1(callbackNode); + } +} - return _name ? "function " + _name : "function"; - } +function scheduleImmediateTask(cb) { + if (ReactSharedInternals.actQueue !== null) { + // Special case: Inside an `act` scope, we push microtasks to the fake `act` + // callback queue. This is because we currently support calling `act` + // without awaiting the result. The plan is to deprecate that, and require + // that you always await the result so that the microtasks have a chance to + // run. But it hasn't happened yet. + ReactSharedInternals.actQueue.push(function () { + cb(); + return null; + }); + } // TODO: Can we land supportsMicrotasks? Which environments don't support it? + // Alternatively, can we move this check to the host config? - default: - // eslint-disable-next-line react-internal/safe-string-coercion - return String(value); - } - } - function describePropValue(value, maxLength) { - if (typeof value === "string" && !needsEscaping.test(value)) { - if (value.length > maxLength - 2) { - if (maxLength < 5) { - return '"..."'; - } + { + // If microtasks are not supported, use Scheduler. + scheduleCallback$3(ImmediatePriority, cb); + } +} - return '"' + value.slice(0, maxLength - 5) + '..."'; - } +function requestTransitionLane( // This argument isn't used, it's only here to encourage the caller to +// check that it's inside a transition before calling this function. +// TODO: Make this non-nullable. Requires a tweak to useOptimistic. +transition) { + // The algorithm for assigning an update to a lane should be stable for all + // updates at the same priority within the same event. To do this, the + // inputs to the algorithm must be the same. + // + // The trick we use is to cache the first of each of these inputs within an + // event. Then reset the cached values once we can be sure the event is + // over. Our heuristic for that is whenever we enter a concurrent work loop. + if (currentEventTransitionLane === NoLane) { + // All transitions within the same event are assigned the same lane. + currentEventTransitionLane = claimNextTransitionLane(); + } + + return currentEventTransitionLane; +} - return '"' + value + '"'; +// transition updates that occur while the async action is still in progress +// are treated as part of the action. +// +// The ideal behavior would be to treat each async function as an independent +// action. However, without a mechanism like AsyncContext, we can't tell which +// action an update corresponds to. So instead, we entangle them all into one. +// The listeners to notify once the entangled scope completes. + +var currentEntangledListeners = null; // The number of pending async actions in the entangled scope. + +var currentEntangledPendingCount = 0; // The transition lane shared by all updates in the entangled scope. + +var currentEntangledLane = NoLane; // A thenable that resolves when the entangled scope completes. It does not +// resolve to a particular value because it's only used for suspending the UI +// until the async action scope has completed. + +var currentEntangledActionThenable = null; +function entangleAsyncAction(transition, thenable) { + // `thenable` is the return value of the async action scope function. Create + // a combined thenable that resolves once every entangled scope function + // has finished. + if (currentEntangledListeners === null) { + // There's no outer async action scope. Create a new one. + var entangledListeners = currentEntangledListeners = []; + currentEntangledPendingCount = 0; + currentEntangledLane = requestTransitionLane(); + var entangledThenable = { + status: 'pending', + value: undefined, + then: function (resolve) { + entangledListeners.push(resolve); } + }; + currentEntangledActionThenable = entangledThenable; + } - return "{" + describeValue(value, maxLength - 2) + "}"; - } - - function describeCollapsedElement(type, props, indent) { - // This function tries to fit the props into a single line for non-essential elements. - // We also ignore children because we're not going deeper. - var maxLength = maxRowLength - indent * 2 - type.length - 2; - var content = ""; - - for (var propName in props) { - if (!props.hasOwnProperty(propName)) { - continue; - } + currentEntangledPendingCount++; + thenable.then(pingEngtangledActionScope, pingEngtangledActionScope); + return thenable; +} - if (propName === "children") { - // Ignored. - continue; - } +function pingEngtangledActionScope() { + if (currentEntangledListeners !== null && --currentEntangledPendingCount === 0) { + // All the actions have finished. Close the entangled async action scope + // and notify all the listeners. + if (currentEntangledActionThenable !== null) { + var fulfilledThenable = currentEntangledActionThenable; + fulfilledThenable.status = 'fulfilled'; + } - var propValue = describePropValue(props[propName], 15); - maxLength -= propName.length + propValue.length + 2; + var listeners = currentEntangledListeners; + currentEntangledListeners = null; + currentEntangledLane = NoLane; + currentEntangledActionThenable = null; - if (maxLength < 0) { - content += " ..."; - break; - } + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; + listener(); + } + } +} - content += " " + propName + "=" + propValue; - } +function chainThenableValue(thenable, result) { + // Equivalent to: Promise.resolve(thenable).then(() => result), except we can + // cheat a bit since we know that that this thenable is only ever consumed + // by React. + // + // We don't technically require promise support on the client yet, hence this + // extra code. + var listeners = []; + var thenableWithOverride = { + status: 'pending', + value: null, + reason: null, + then: function (resolve) { + listeners.push(resolve); + } + }; + thenable.then(function (value) { + var fulfilledThenable = thenableWithOverride; + fulfilledThenable.status = 'fulfilled'; + fulfilledThenable.value = result; + + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; + listener(result); + } + }, function (error) { + var rejectedThenable = thenableWithOverride; + rejectedThenable.status = 'rejected'; + rejectedThenable.reason = error; + + for (var i = 0; i < listeners.length; i++) { + var listener = listeners[i]; // This is a perf hack where we call the `onFulfill` ping function + // instead of `onReject`, because we know that React is the only + // consumer of these promises, and it passes the same listener to both. + // We also know that it will read the error directly off the + // `.reason` field. + + listener(undefined); + } + }); + return thenableWithOverride; +} +function peekEntangledActionLane() { + return currentEntangledLane; +} +function peekEntangledActionThenable() { + return currentEntangledActionThenable; +} - return indentation(indent) + "<" + type + content + ">\n"; - } +var UpdateState = 0; +var ReplaceState = 1; +var ForceUpdate = 2; +var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`. +// It should only be read right after calling `processUpdateQueue`, via +// `checkHasForceUpdateAfterProcessing`. - function describeExpandedElement(type, props, rowPrefix) { - // This function tries to fit the props into a single line for non-essential elements. - // We also ignore children because we're not going deeper. - var remainingRowLength = maxRowLength - rowPrefix.length - type.length; // We add the properties to a set so we can choose later whether we'll put it on one - // line or multiple lines. +var hasForceUpdate = false; +var didWarnUpdateInsideUpdate; +var currentlyProcessingQueue; - var properties = []; +{ + didWarnUpdateInsideUpdate = false; + currentlyProcessingQueue = null; +} - for (var propName in props) { - if (!props.hasOwnProperty(propName)) { - continue; - } +function initializeUpdateQueue(fiber) { + var queue = { + baseState: fiber.memoizedState, + firstBaseUpdate: null, + lastBaseUpdate: null, + shared: { + pending: null, + lanes: NoLanes, + hiddenCallbacks: null + }, + callbacks: null + }; + fiber.updateQueue = queue; +} +function cloneUpdateQueue(current, workInProgress) { + // Clone the update queue from current. Unless it's already a clone. + var queue = workInProgress.updateQueue; + var currentQueue = current.updateQueue; + + if (queue === currentQueue) { + var clone = { + baseState: currentQueue.baseState, + firstBaseUpdate: currentQueue.firstBaseUpdate, + lastBaseUpdate: currentQueue.lastBaseUpdate, + shared: currentQueue.shared, + callbacks: null + }; + workInProgress.updateQueue = clone; + } +} +function createUpdate(lane) { + var update = { + lane: lane, + tag: UpdateState, + payload: null, + callback: null, + next: null + }; + return update; +} +function enqueueUpdate(fiber, update, lane) { + var updateQueue = fiber.updateQueue; - if (propName === "children") { - // Ignored. - continue; - } + if (updateQueue === null) { + // Only occurs if the fiber has been unmounted. + return null; + } - var maxLength = maxRowLength - rowPrefix.length - propName.length - 1; - var propValue = describePropValue(props[propName], maxLength); - remainingRowLength -= propName.length + propValue.length + 2; - properties.push(propName + "=" + propValue); - } + var sharedQueue = updateQueue.shared; - if (properties.length === 0) { - return rowPrefix + "<" + type + ">\n"; - } else if (remainingRowLength > 0) { - // We can fit all on one row. - return rowPrefix + "<" + type + " " + properties.join(" ") + ">\n"; - } else { - // Split into one row per property: - return ( - rowPrefix + - "<" + - type + - "\n" + - rowPrefix + - " " + - properties.join("\n" + rowPrefix + " ") + - "\n" + - rowPrefix + - ">\n" - ); - } - } - - function describePropertiesDiff(clientObject, serverObject, indent) { - var properties = ""; - var remainingServerProperties = assign({}, serverObject); - - for (var propName in clientObject) { - if (!clientObject.hasOwnProperty(propName)) { - continue; - } + { + if (currentlyProcessingQueue === sharedQueue && !didWarnUpdateInsideUpdate) { + var componentName = getComponentNameFromFiber(fiber); - delete remainingServerProperties[propName]; - var maxLength = maxRowLength - indent * 2 - propName.length - 2; - var clientValue = clientObject[propName]; - var clientPropValue = describeValue(clientValue, maxLength); + error('An update (setState, replaceState, or forceUpdate) was scheduled ' + 'from inside an update function. Update functions should be pure, ' + 'with zero side-effects. Consider using componentDidUpdate or a ' + 'callback.\n\nPlease update the following component: %s', componentName); - if (serverObject.hasOwnProperty(propName)) { - var serverValue = serverObject[propName]; - var serverPropValue = describeValue(serverValue, maxLength); - properties += - added(indent) + propName + ": " + clientPropValue + "\n"; - properties += - removed(indent) + propName + ": " + serverPropValue + "\n"; - } else { - properties += - added(indent) + propName + ": " + clientPropValue + "\n"; - } - } + didWarnUpdateInsideUpdate = true; + } + } - for (var _propName in remainingServerProperties) { - if (!remainingServerProperties.hasOwnProperty(_propName)) { - continue; - } + if (isUnsafeClassRenderPhaseUpdate()) { + // This is an unsafe render phase update. Add directly to the update + // queue so we can process it immediately during the current render. + var pending = sharedQueue.pending; - var _maxLength = maxRowLength - indent * 2 - _propName.length - 2; + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } - var _serverValue = remainingServerProperties[_propName]; + sharedQueue.pending = update; // Update the childLanes even though we're most likely already rendering + // this fiber. This is for backwards compatibility in the case where you + // update a different component during render phase than the one that is + // currently renderings (a pattern that is accompanied by a warning). - var _serverPropValue = describeValue(_serverValue, _maxLength); + return unsafe_markUpdateLaneFromFiberToRoot(fiber, lane); + } else { + return enqueueConcurrentClassUpdate(fiber, sharedQueue, update, lane); + } +} +function entangleTransitions(root, fiber, lane) { + var updateQueue = fiber.updateQueue; - properties += - removed(indent) + _propName + ": " + _serverPropValue + "\n"; - } + if (updateQueue === null) { + // Only occurs if the fiber has been unmounted. + return; + } - return properties; - } + var sharedQueue = updateQueue.shared; - function describeElementDiff(type, clientProps, serverProps, indent) { - var content = ""; // Maps any previously unmatched lower case server prop name to its full prop name + if (isTransitionLane(lane)) { + var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must + // have finished. We can remove them from the shared queue, which represents + // a superset of the actually pending lanes. In some cases we may entangle + // more than we need to, but that's OK. In fact it's worse if we *don't* + // entangle when we should. - var serverPropNames = new Map(); + queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. - for (var propName in serverProps) { - if (!serverProps.hasOwnProperty(propName)) { - continue; - } + var newQueueLanes = mergeLanes(queueLanes, lane); + sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if + // the lane finished since the last time we entangled it. So we need to + // entangle it again, just to be sure. - serverPropNames.set(propName.toLowerCase(), propName); - } + markRootEntangled(root, newQueueLanes); + } +} +function enqueueCapturedUpdate(workInProgress, capturedUpdate) { + // Captured updates are updates that are thrown by a child during the render + // phase. They should be discarded if the render is aborted. Therefore, + // we should only put them on the work-in-progress queue, not the current one. + var queue = workInProgress.updateQueue; // Check if the work-in-progress queue is a clone. + + var current = workInProgress.alternate; + + if (current !== null) { + var currentQueue = current.updateQueue; + + if (queue === currentQueue) { + // The work-in-progress queue is the same as current. This happens when + // we bail out on a parent fiber that then captures an error thrown by + // a child. Since we want to append the update only to the work-in + // -progress queue, we need to clone the updates. We usually clone during + // processUpdateQueue, but that didn't happen in this case because we + // skipped over the parent when we bailed out. + var newFirst = null; + var newLast = null; + var firstBaseUpdate = queue.firstBaseUpdate; - if (serverPropNames.size === 1 && serverPropNames.has("children")) { - content += describeExpandedElement( - type, - clientProps, - indentation(indent) - ); - } else { - for (var _propName2 in clientProps) { - if (!clientProps.hasOwnProperty(_propName2)) { - continue; - } + if (firstBaseUpdate !== null) { + // Loop through the updates and clone them. + var update = firstBaseUpdate; - if (_propName2 === "children") { - // Handled below. - continue; - } + do { + var clone = { + lane: update.lane, + tag: update.tag, + payload: update.payload, + // When this update is rebased, we should not fire its + // callback again. + callback: null, + next: null + }; - var maxLength = - maxRowLength - (indent + 1) * 2 - _propName2.length - 1; - var serverPropName = serverPropNames.get(_propName2.toLowerCase()); - - if (serverPropName !== undefined) { - serverPropNames.delete(_propName2.toLowerCase()); // There's a diff here. - - var clientValue = clientProps[_propName2]; - var serverValue = serverProps[serverPropName]; - var clientPropValue = describePropValue(clientValue, maxLength); - var serverPropValue = describePropValue(serverValue, maxLength); - - if ( - typeof clientValue === "object" && - clientValue !== null && - typeof serverValue === "object" && - serverValue !== null && - objectName(clientValue) === "Object" && - objectName(serverValue) === "Object" && // Only do the diff if the object has a lot of keys or was shortened. - (Object.keys(clientValue).length > 2 || - Object.keys(serverValue).length > 2 || - clientPropValue.indexOf("...") > -1 || - serverPropValue.indexOf("...") > -1) - ) { - // We're comparing two plain objects. We can diff the nested objects instead. - content += - indentation(indent + 1) + - _propName2 + - "={{\n" + - describePropertiesDiff(clientValue, serverValue, indent + 2) + - indentation(indent + 1) + - "}}\n"; - } else { - content += - added(indent + 1) + _propName2 + "=" + clientPropValue + "\n"; - content += - removed(indent + 1) + _propName2 + "=" + serverPropValue + "\n"; - } + if (newLast === null) { + newFirst = newLast = clone; } else { - // Considered equal. - content += - indentation(indent + 1) + - _propName2 + - "=" + - describePropValue(clientProps[_propName2], maxLength) + - "\n"; - } - } + newLast.next = clone; + newLast = clone; + } // $FlowFixMe[incompatible-type] we bail out when we get a null - serverPropNames.forEach(function (propName) { - if (propName === "children") { - // Handled below. - return; - } - var maxLength = maxRowLength - (indent + 1) * 2 - propName.length - 1; - content += - removed(indent + 1) + - propName + - "=" + - describePropValue(serverProps[propName], maxLength) + - "\n"; - }); + update = update.next; + } while (update !== null); // Append the captured update the end of the cloned list. - if (content === "") { - // No properties - content = indentation(indent) + "<" + type + ">\n"; + + if (newLast === null) { + newFirst = newLast = capturedUpdate; } else { - // Had properties - content = - indentation(indent) + - "<" + - type + - "\n" + - content + - indentation(indent) + - ">\n"; + newLast.next = capturedUpdate; + newLast = capturedUpdate; } + } else { + // There are no base updates. + newFirst = newLast = capturedUpdate; } - var serverChildren = serverProps.children; - var clientChildren = clientProps.children; - - if ( - typeof serverChildren === "string" || - typeof serverChildren === "number" || - typeof serverChildren === "bigint" - ) { - // There's a diff of the children. - // $FlowFixMe[unsafe-addition] - var serverText = "" + serverChildren; - var clientText = ""; + queue = { + baseState: currentQueue.baseState, + firstBaseUpdate: newFirst, + lastBaseUpdate: newLast, + shared: currentQueue.shared, + callbacks: currentQueue.callbacks + }; + workInProgress.updateQueue = queue; + return; + } + } // Append the update to the end of the list. - if ( - typeof clientChildren === "string" || - typeof clientChildren === "number" || - typeof clientChildren === "bigint" - ) { - // $FlowFixMe[unsafe-addition] - clientText = "" + clientChildren; - } - content += describeTextDiff(clientText, serverText, indent + 1); - } else if ( - typeof clientChildren === "string" || - typeof clientChildren === "number" || - typeof clientChildren === "bigint" - ) { - // The client has children but it's not considered a difference from the server. - // $FlowFixMe[unsafe-addition] - content += describeTextDiff("" + clientChildren, undefined, indent + 1); - } + var lastBaseUpdate = queue.lastBaseUpdate; - return content; - } + if (lastBaseUpdate === null) { + queue.firstBaseUpdate = capturedUpdate; + } else { + lastBaseUpdate.next = capturedUpdate; + } - function describeSiblingFiber(fiber, indent) { - var type = describeFiberType(fiber); + queue.lastBaseUpdate = capturedUpdate; +} - if (type === null) { - // Skip this type of fiber. We currently treat this as a fragment - // so it's just part of the parent's children. - var flatContent = ""; - var childFiber = fiber.child; +function getStateFromUpdate(workInProgress, queue, update, prevState, nextProps, instance) { + switch (update.tag) { + case ReplaceState: + { + var payload = update.payload; - while (childFiber) { - flatContent += describeSiblingFiber(childFiber, indent); - childFiber = childFiber.sibling; - } + if (typeof payload === 'function') { + // Updater function + { + enterDisallowedContextReadInDEV(); + } - return flatContent; - } + var nextState = payload.call(instance, prevState, nextProps); - return indentation(indent) + "<" + type + ">" + "\n"; - } + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - function describeNode(node, indent) { - var skipToNode = findNotableNode(node, indent); + try { + payload.call(instance, prevState, nextProps); + } finally { + setIsStrictModeForDevtools(false); + } + } - if ( - skipToNode !== node && - (node.children.length !== 1 || node.children[0] !== skipToNode) - ) { - return ( - indentation(indent) + "...\n" + describeNode(skipToNode, indent + 1) - ); - } // Prefix with any server components for context + exitDisallowedContextReadInDEV(); + } - var parentContent = ""; - var debugInfo = node.fiber._debugInfo; + return nextState; + } // State object - if (debugInfo) { - for (var i = 0; i < debugInfo.length; i++) { - var serverComponentName = debugInfo[i].name; - if (typeof serverComponentName === "string") { - parentContent += - indentation(indent) + "<" + serverComponentName + ">" + "\n"; - indent++; - } - } - } // Self + return payload; + } - var selfContent = ""; // We use the pending props since we might be generating a diff before the complete phase - // when something throws. + case CaptureUpdate: + { + workInProgress.flags = workInProgress.flags & ~ShouldCapture | DidCapture; + } + // Intentional fallthrough - var clientProps = node.fiber.pendingProps; + case UpdateState: + { + var _payload = update.payload; + var partialState; - if (node.fiber.tag === HostText) { - // Text Node - selfContent = describeTextDiff(clientProps, node.serverProps, indent); - } else { - var type = describeFiberType(node.fiber); - - if (type !== null) { - // Element Node - if (node.serverProps === undefined) { - // Just a reference node for context. - selfContent = describeCollapsedElement(type, clientProps, indent); - indent++; - } else if (node.serverProps === null) { - selfContent = describeExpandedElement( - type, - clientProps, - added(indent) - ); // If this was an insertion we won't step down further. Any tail - // are considered siblings so we don't indent. - // TODO: Model this a little better. - } else if (typeof node.serverProps === "string") { - { - error( - "Should not have matched a non HostText fiber to a Text node. This is a bug in React." - ); - } - } else { - selfContent = describeElementDiff( - type, - clientProps, - node.serverProps, - indent - ); - indent++; + if (typeof _payload === 'function') { + // Updater function + { + enterDisallowedContextReadInDEV(); } - } - } // Compute children - var childContent = ""; - var childFiber = node.fiber.child; - var diffIdx = 0; + partialState = _payload.call(instance, prevState, nextProps); + + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - while (childFiber && diffIdx < node.children.length) { - var childNode = node.children[diffIdx]; + try { + _payload.call(instance, prevState, nextProps); + } finally { + setIsStrictModeForDevtools(false); + } + } - if (childNode.fiber === childFiber) { - // This was a match in the diff. - childContent += describeNode(childNode, indent); - diffIdx++; + exitDisallowedContextReadInDEV(); + } } else { - // This is an unrelated previous sibling. - childContent += describeSiblingFiber(childFiber, indent); + // Partial state object + partialState = _payload; } - childFiber = childFiber.sibling; - } - - if (childFiber && node.children.length > 0) { - // If we had any further siblings after the last mismatch, we can't be sure if it's - // actually a valid match since it might not have found a match. So we exclude next - // siblings to avoid confusion. - childContent += indentation(indent) + "..." + "\n"; - } // Deleted tail nodes + if (partialState === null || partialState === undefined) { + // Null and undefined are treated as no-ops. + return prevState; + } // Merge the partial state and the previous state. - var serverTail = node.serverTail; - for (var _i = 0; _i < serverTail.length; _i++) { - var tailNode = serverTail[_i]; + return assign({}, prevState, partialState); + } - if (typeof tailNode === "string") { - // Removed text node - childContent += - removed(indent) + - describeTextNode(tailNode, maxRowLength - indent * 2) + - "\n"; - } else { - // Removed element - childContent += describeExpandedElement( - tailNode.type, - tailNode.props, - removed(indent) - ); - } + case ForceUpdate: + { + hasForceUpdate = true; + return prevState; } + } - return parentContent + selfContent + childContent; - } + return prevState; +} - function describeDiff(rootNode) { - try { - return "\n\n" + describeNode(rootNode, 0); - } catch (x) { - return ""; - } - } +var didReadFromEntangledAsyncAction = false; // Each call to processUpdateQueue should be accompanied by a call to this. It's +// only in a separate function because in updateHostRoot, it must happen after +// all the context stacks have been pushed to, to prevent a stack mismatch. A +// bit unfortunate. + +function suspendIfUpdateReadFromEntangledAsyncAction() { + // Check if this update is part of a pending async action. If so, we'll + // need to suspend until the action has finished, so that it's batched + // together with future updates in the same action. + // TODO: Once we support hooks inside useMemo (or an equivalent + // memoization boundary like Forget), hoist this logic so that it only + // suspends if the memo boundary produces a new value. + if (didReadFromEntangledAsyncAction) { + var entangledActionThenable = peekEntangledActionThenable(); + + if (entangledActionThenable !== null) { + // TODO: Instead of the throwing the thenable directly, throw a + // special object like `use` does so we can detect if it's captured + // by userspace. + throw entangledActionThenable; + } + } +} +function processUpdateQueue(workInProgress, props, instance, renderLanes) { + didReadFromEntangledAsyncAction = false; // This is always non-null on a ClassComponent or HostRoot - var isHydrating = false; // This flag allows for warning supression when we expect there to be mismatches + var queue = workInProgress.updateQueue; + hasForceUpdate = false; - var hydrationDiffRootDEV = null; // Hydration errors that were thrown inside this boundary + { + currentlyProcessingQueue = queue.shared; + } - var hydrationErrors = null; + var firstBaseUpdate = queue.firstBaseUpdate; + var lastBaseUpdate = queue.lastBaseUpdate; // Check if there are pending updates. If so, transfer them to the base queue. - function prepareToHydrateHostInstance(fiber, hostContext) { - { - throw new Error( - "Expected prepareToHydrateHostInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } + var pendingQueue = queue.shared.pending; - function prepareToHydrateHostTextInstance(fiber) { - { - throw new Error( - "Expected prepareToHydrateHostTextInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } + if (pendingQueue !== null) { + queue.shared.pending = null; // The pending queue is circular. Disconnect the pointer between first + // and last so that it's non-circular. - function prepareToHydrateHostSuspenseInstance(fiber) { - { - throw new Error( - "Expected prepareToHydrateHostSuspenseInstance() to never be called. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } + var lastPendingUpdate = pendingQueue; + var firstPendingUpdate = lastPendingUpdate.next; + lastPendingUpdate.next = null; // Append pending updates to base queue - function popHydrationState(fiber) { - { - return false; - } + if (lastBaseUpdate === null) { + firstBaseUpdate = firstPendingUpdate; + } else { + lastBaseUpdate.next = firstPendingUpdate; } - function upgradeHydrationErrorsToRecoverable() { - if (hydrationErrors !== null) { - // Successfully completed a forced client render. The errors that occurred - // during the hydration attempt are now recovered. We will log them in - // commit phase, once the entire tree has finished. - queueRecoverableErrors(hydrationErrors); - hydrationErrors = null; - } - } + lastBaseUpdate = lastPendingUpdate; // If there's a current queue, and it's different from the base queue, then + // we need to transfer the updates to that queue, too. Because the base + // queue is a singly-linked list with no cycles, we can append to both + // lists and take advantage of structural sharing. + // TODO: Pass `current` as argument - function getIsHydrating() { - return isHydrating; - } + var current = workInProgress.alternate; - function queueHydrationError(error) { - if (hydrationErrors === null) { - hydrationErrors = [error]; - } else { - hydrationErrors.push(error); - } - } - function emitPendingHydrationWarnings() { - { - // If we haven't yet thrown any hydration errors by the time we reach the end we've successfully - // hydrated, however, we might still have DEV-only mismatches that we log now. - var diffRoot = hydrationDiffRootDEV; - - if (diffRoot !== null) { - hydrationDiffRootDEV = null; - var diff = describeDiff(diffRoot); - - error( - "A tree hydrated but some attributes of the server rendered HTML didn't match the client properties. This won't be patched up. " + - "This can happen if a SSR-ed Client Component used:\n" + - "\n" + - "- A server/client branch `if (typeof window !== 'undefined')`.\n" + - "- Variable input such as `Date.now()` or `Math.random()` which changes each time it's called.\n" + - "- Date formatting in a user's locale which doesn't match the server.\n" + - "- External changing data without sending a snapshot of it along with the HTML.\n" + - "- Invalid HTML tag nesting.\n" + - "\n" + - "It can also happen if the client has a browser extension installed which messes with the HTML before React loaded.\n" + - "\n" + - "%s%s", - "https://react.dev/link/hydration-mismatch", - diff - ); - } - } - } - - // we wait until the current render is over (either finished or interrupted) - // before adding it to the fiber/hook queue. Push to this array so we can - // access the queue, fiber, update, et al later. - - var concurrentQueues = []; - var concurrentQueuesIndex = 0; - var concurrentlyUpdatedLanes = NoLanes; - function finishQueueingConcurrentUpdates() { - var endIndex = concurrentQueuesIndex; - concurrentQueuesIndex = 0; - concurrentlyUpdatedLanes = NoLanes; - var i = 0; - - while (i < endIndex) { - var fiber = concurrentQueues[i]; - concurrentQueues[i++] = null; - var queue = concurrentQueues[i]; - concurrentQueues[i++] = null; - var update = concurrentQueues[i]; - concurrentQueues[i++] = null; - var lane = concurrentQueues[i]; - concurrentQueues[i++] = null; - - if (queue !== null && update !== null) { - var pending = queue.pending; - - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + if (current !== null) { + // This is always non-null on a ClassComponent or HostRoot + var currentQueue = current.updateQueue; + var currentLastBaseUpdate = currentQueue.lastBaseUpdate; - queue.pending = update; + if (currentLastBaseUpdate !== lastBaseUpdate) { + if (currentLastBaseUpdate === null) { + currentQueue.firstBaseUpdate = firstPendingUpdate; + } else { + currentLastBaseUpdate.next = firstPendingUpdate; } - if (lane !== NoLane) { - markUpdateLaneFromFiberToRoot(fiber, update, lane); - } + currentQueue.lastBaseUpdate = lastPendingUpdate; } } - function getConcurrentlyUpdatedLanes() { - return concurrentlyUpdatedLanes; - } + } // These values may change as we process the queue. - function enqueueUpdate$1(fiber, queue, update, lane) { - // Don't update the `childLanes` on the return path yet. If we already in - // the middle of rendering, wait until after it has completed. - concurrentQueues[concurrentQueuesIndex++] = fiber; - concurrentQueues[concurrentQueuesIndex++] = queue; - concurrentQueues[concurrentQueuesIndex++] = update; - concurrentQueues[concurrentQueuesIndex++] = lane; - concurrentlyUpdatedLanes = mergeLanes(concurrentlyUpdatedLanes, lane); // The fiber's `lane` field is used in some places to check if any work is - // scheduled, to perform an eager bailout, so we need to update it immediately. - // TODO: We should probably move this to the "shared" queue instead. - fiber.lanes = mergeLanes(fiber.lanes, lane); - var alternate = fiber.alternate; + if (firstBaseUpdate !== null) { + // Iterate through the list of updates to compute the result. + var newState = queue.baseState; // TODO: Don't need to accumulate this. Instead, we can remove renderLanes + // from the original lanes. - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, lane); - } - } - - function enqueueConcurrentHookUpdate(fiber, queue, update, lane) { - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); - return getRootForUpdatedFiber(fiber); - } - function enqueueConcurrentHookUpdateAndEagerlyBailout( - fiber, - queue, - update - ) { - // This function is used to queue an update that doesn't need a rerender. The - // only reason we queue it is in case there's a subsequent higher priority - // update that causes it to be rebased. - var lane = NoLane; - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); // Usually we can rely on the upcoming render phase to process the concurrent - // queue. However, since this is a bail out, we're not scheduling any work - // here. So the update we just queued will leak until something else happens - // to schedule work (if ever). - // - // Check if we're currently in the middle of rendering a tree, and if not, - // process the queue immediately to prevent a leak. + var newLanes = NoLanes; + var newBaseState = null; + var newFirstBaseUpdate = null; + var newLastBaseUpdate = null; + var update = firstBaseUpdate; - var isConcurrentlyRendering = getWorkInProgressRoot() !== null; + do { + // An extra OffscreenLane bit is added to updates that were made to + // a hidden tree, so that we can distinguish them from updates that were + // already there when the tree was hidden. + var updateLane = removeLanes(update.lane, OffscreenLane); + var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then + // it's not a "base" update and we should disregard the extra base lanes + // that were added to renderLanes when we entered the Offscreen tree. - if (!isConcurrentlyRendering) { - finishQueueingConcurrentUpdates(); - } - } - function enqueueConcurrentClassUpdate(fiber, queue, update, lane) { - var concurrentQueue = queue; - var concurrentUpdate = update; - enqueueUpdate$1(fiber, concurrentQueue, concurrentUpdate, lane); - return getRootForUpdatedFiber(fiber); - } - function enqueueConcurrentRenderForLane(fiber, lane) { - enqueueUpdate$1(fiber, null, null, lane); - return getRootForUpdatedFiber(fiber); - } // Calling this function outside this module should only be done for backwards - // compatibility and should always be accompanied by a warning. + var shouldSkipUpdate = isHiddenUpdate ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) : !isSubsetOfLanes(renderLanes, updateLane); - function unsafe_markUpdateLaneFromFiberToRoot(sourceFiber, lane) { - // NOTE: For Hyrum's Law reasons, if an infinite update loop is detected, it - // should throw before `markUpdateLaneFromFiberToRoot` is called. But this is - // undefined behavior and we can change it if we need to; it just so happens - // that, at the time of this writing, there's an internal product test that - // happens to rely on this. - var root = getRootForUpdatedFiber(sourceFiber); - markUpdateLaneFromFiberToRoot(sourceFiber, null, lane); - return root; - } + if (shouldSkipUpdate) { + // Priority is insufficient. Skip this update. If this is the first + // skipped update, the previous update/state is the new base + // update/state. + var clone = { + lane: updateLane, + tag: update.tag, + payload: update.payload, + callback: update.callback, + next: null + }; + + if (newLastBaseUpdate === null) { + newFirstBaseUpdate = newLastBaseUpdate = clone; + newBaseState = newState; + } else { + newLastBaseUpdate = newLastBaseUpdate.next = clone; + } // Update the remaining priority in the queue. - function markUpdateLaneFromFiberToRoot(sourceFiber, update, lane) { - // Update the source fiber's lanes - sourceFiber.lanes = mergeLanes(sourceFiber.lanes, lane); - var alternate = sourceFiber.alternate; - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, lane); - } // Walk the parent path to the root and update the child lanes. + newLanes = mergeLanes(newLanes, updateLane); + } else { + // This update does have sufficient priority. + // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. + if (updateLane !== NoLane && updateLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } + + if (newLastBaseUpdate !== null) { + var _clone = { + // This update is going to be committed so we never want uncommit + // it. Using NoLane works because 0 is a subset of all bitmasks, so + // this will never be skipped by the check above. + lane: NoLane, + tag: update.tag, + payload: update.payload, + // When this update is rebased, we should not fire its + // callback again. + callback: null, + next: null + }; + newLastBaseUpdate = newLastBaseUpdate.next = _clone; + } // Process this update. - var isHidden = false; - var parent = sourceFiber.return; - var node = sourceFiber; - while (parent !== null) { - parent.childLanes = mergeLanes(parent.childLanes, lane); - alternate = parent.alternate; + newState = getStateFromUpdate(workInProgress, queue, update, newState, props, instance); + var callback = update.callback; - if (alternate !== null) { - alternate.childLanes = mergeLanes(alternate.childLanes, lane); - } + if (callback !== null) { + workInProgress.flags |= Callback; - if (parent.tag === OffscreenComponent) { - // Check if this offscreen boundary is currently hidden. - // - // The instance may be null if the Offscreen parent was unmounted. Usually - // the parent wouldn't be reachable in that case because we disconnect - // fibers from the tree when they are deleted. However, there's a weird - // edge case where setState is called on a fiber that was interrupted - // before it ever mounted. Because it never mounts, it also never gets - // deleted. Because it never gets deleted, its return pointer never gets - // disconnected. Which means it may be attached to a deleted Offscreen - // parent node. (This discovery suggests it may be better for memory usage - // if we don't attach the `return` pointer until the commit phase, though - // in order to do that we'd need some other way to track the return - // pointer during the initial render, like on the stack.) - // - // This case is always accompanied by a warning, but we still need to - // account for it. (There may be other cases that we haven't discovered, - // too.) - var offscreenInstance = parent.stateNode; - - if ( - offscreenInstance !== null && - !(offscreenInstance._visibility & OffscreenVisible) - ) { - isHidden = true; + if (isHiddenUpdate) { + workInProgress.flags |= Visibility; } - } - node = parent; - parent = parent.return; - } - - if (isHidden && update !== null && node.tag === HostRoot) { - var root = node.stateNode; - markHiddenUpdate(root, update, lane); - } - } + var callbacks = queue.callbacks; - function getRootForUpdatedFiber(sourceFiber) { - // TODO: We will detect and infinite update loop and throw even if this fiber - // has already unmounted. This isn't really necessary but it happens to be the - // current behavior we've used for several release cycles. Consider not - // performing this check if the updated fiber already unmounted, since it's - // not possible for that to cause an infinite update loop. - throwIfInfiniteUpdateLoopDetected(); // When a setState happens, we must ensure the root is scheduled. Because - // update queues do not have a backpointer to the root, the only way to do - // this currently is to walk up the return path. This used to not be a big - // deal because we would have to walk up the return path to set - // the `childLanes`, anyway, but now those two traversals happen at - // different times. - // TODO: Consider adding a `root` backpointer on the update queue. + if (callbacks === null) { + queue.callbacks = [callback]; + } else { + callbacks.push(callback); + } + } + } // $FlowFixMe[incompatible-type] we bail out when we get a null - detectUpdateOnUnmountedFiber(sourceFiber, sourceFiber); - var node = sourceFiber; - var parent = node.return; - while (parent !== null) { - detectUpdateOnUnmountedFiber(sourceFiber, node); - node = parent; - parent = node.return; - } + update = update.next; - return node.tag === HostRoot ? node.stateNode : null; - } + if (update === null) { + pendingQueue = queue.shared.pending; - function detectUpdateOnUnmountedFiber(sourceFiber, parent) { - { - var alternate = parent.alternate; + if (pendingQueue === null) { + break; + } else { + // An update was scheduled from inside a reducer. Add the new + // pending updates to the end of the list and keep processing. + var _lastPendingUpdate = pendingQueue; // Intentionally unsound. Pending updates form a circular list, but we + // unravel them when transferring them to the base queue. - if ( - alternate === null && - (parent.flags & (Placement | Hydrating)) !== NoFlags$1 - ) { - warnAboutUpdateOnNotYetMountedFiberInDEV(sourceFiber); + var _firstPendingUpdate = _lastPendingUpdate.next; + _lastPendingUpdate.next = null; + update = _firstPendingUpdate; + queue.lastBaseUpdate = _lastPendingUpdate; + queue.shared.pending = null; } } + } while (true); + + if (newLastBaseUpdate === null) { + newBaseState = newState; } - // there's only a single root, but we do support multi root apps, hence this - // extra complexity. But this module is optimized for the single root case. + queue.baseState = newBaseState; + queue.firstBaseUpdate = newFirstBaseUpdate; + queue.lastBaseUpdate = newLastBaseUpdate; - var firstScheduledRoot = null; - var lastScheduledRoot = null; // Used to prevent redundant mircotasks from being scheduled. + if (firstBaseUpdate === null) { + // `queue.lanes` is used for entangling transitions. We can set it back to + // zero once the queue is empty. + queue.shared.lanes = NoLanes; + } // Set the remaining expiration time to be whatever is remaining in the queue. + // This should be fine because the only two other things that contribute to + // expiration time are props and context. We're already in the middle of the + // begin phase by the time we start processing the queue, so we've already + // dealt with the props. Context in components that specify + // shouldComponentUpdate is tricky; but we'll have to account for + // that regardless. - var didScheduleMicrotask = false; // `act` "microtasks" are scheduled on the `act` queue instead of an actual - // microtask, so we have to dedupe those separately. This wouldn't be an issue - // if we required all `act` calls to be awaited, which we might in the future. - var didScheduleMicrotask_act = false; // Used to quickly bail out of flushSync if there's no sync work to do. + markSkippedUpdateLanes(newLanes); + workInProgress.lanes = newLanes; + workInProgress.memoizedState = newState; + } - var mightHavePendingSyncWork = false; - var isFlushingWork = false; - var currentEventTransitionLane = NoLane; - function ensureRootIsScheduled(root) { - // This function is called whenever a root receives an update. It does two - // things 1) it ensures the root is in the root schedule, and 2) it ensures - // there's a pending microtask to process the root schedule. - // - // Most of the actual scheduling logic does not happen until - // `scheduleTaskForRootDuringMicrotask` runs. - // Add the root to the schedule - if (root === lastScheduledRoot || root.next !== null); - else { - if (lastScheduledRoot === null) { - firstScheduledRoot = lastScheduledRoot = root; - } else { - lastScheduledRoot.next = root; - lastScheduledRoot = root; - } - } // Any time a root received an update, we set this to true until the next time - // we process the schedule. If it's false, then we can quickly exit flushSync - // without consulting the schedule. + { + currentlyProcessingQueue = null; + } +} - mightHavePendingSyncWork = true; // At the end of the current event, go through each of the roots and ensure - // there's a task scheduled for each one at the correct priority. +function callCallback(callback, context) { + if (typeof callback !== 'function') { + throw new Error('Invalid argument passed as callback. Expected a function. Instead ' + ("received: " + callback)); + } - if (ReactSharedInternals.actQueue !== null) { - // We're inside an `act` scope. - if (!didScheduleMicrotask_act) { - didScheduleMicrotask_act = true; - scheduleImmediateTask(processRootScheduleInMicrotask); - } - } else { - if (!didScheduleMicrotask) { - didScheduleMicrotask = true; - scheduleImmediateTask(processRootScheduleInMicrotask); - } - } + callback.call(context); +} - if (!enableDeferRootSchedulingToMicrotask) { - // While this flag is disabled, we schedule the render task immediately - // instead of waiting a microtask. - // TODO: We need to land enableDeferRootSchedulingToMicrotask ASAP to - // unblock additional features we have planned. - scheduleTaskForRootDuringMicrotask(root, now$1()); - } +function resetHasForceUpdateBeforeProcessing() { + hasForceUpdate = false; +} +function checkHasForceUpdateAfterProcessing() { + return hasForceUpdate; +} +function deferHiddenCallbacks(updateQueue) { + // When an update finishes on a hidden component, its callback should not + // be fired until/unless the component is made visible again. Stash the + // callback on the shared queue object so it can be fired later. + var newHiddenCallbacks = updateQueue.callbacks; - if (ReactSharedInternals.isBatchingLegacy && root.tag === LegacyRoot) { - // Special `act` case: Record whenever a legacy update is scheduled. - ReactSharedInternals.didScheduleLegacyUpdate = true; - } + if (newHiddenCallbacks !== null) { + var existingHiddenCallbacks = updateQueue.shared.hiddenCallbacks; + + if (existingHiddenCallbacks === null) { + updateQueue.shared.hiddenCallbacks = newHiddenCallbacks; + } else { + updateQueue.shared.hiddenCallbacks = existingHiddenCallbacks.concat(newHiddenCallbacks); } - function flushSyncWorkOnAllRoots() { - // This is allowed to be called synchronously, but the caller should check - // the execution context first. - flushSyncWorkAcrossRoots_impl(false); + } +} +function commitHiddenCallbacks(updateQueue, context) { + // This component is switching from hidden -> visible. Commit any callbacks + // that were previously deferred. + var hiddenCallbacks = updateQueue.shared.hiddenCallbacks; + + if (hiddenCallbacks !== null) { + updateQueue.shared.hiddenCallbacks = null; + + for (var i = 0; i < hiddenCallbacks.length; i++) { + var callback = hiddenCallbacks[i]; + callCallback(callback, context); } - function flushSyncWorkOnLegacyRootsOnly() { - // This is allowed to be called synchronously, but the caller should check - // the execution context first. - { - flushSyncWorkAcrossRoots_impl(true); - } + } +} +function commitCallbacks(updateQueue, context) { + var callbacks = updateQueue.callbacks; + + if (callbacks !== null) { + updateQueue.callbacks = null; + + for (var i = 0; i < callbacks.length; i++) { + var callback = callbacks[i]; + callCallback(callback, context); } + } +} - function flushSyncWorkAcrossRoots_impl(onlyLegacy) { - if (isFlushingWork) { - // Prevent reentrancy. - // TODO: Is this overly defensive? The callers must check the execution - // context first regardless. - return; - } +// $FlowFixMe[method-unbinding] +var hasOwnProperty = Object.prototype.hasOwnProperty; - if (!mightHavePendingSyncWork) { - // Fast path. There's no sync work to do. - return; - } // There may or may not be synchronous work scheduled. Let's check. +/** + * Performs equality by iterating through keys on an object and returning false + * when any key has values which are not strictly equal between the arguments. + * Returns true when the values of all keys are strictly equal. + */ - var didPerformSomeWork; - isFlushingWork = true; +function shallowEqual(objA, objB) { + if (objectIs(objA, objB)) { + return true; + } - do { - didPerformSomeWork = false; - var root = firstScheduledRoot; - - while (root !== null) { - if (onlyLegacy && root.tag !== LegacyRoot); - else { - var workInProgressRoot = getWorkInProgressRoot(); - var workInProgressRootRenderLanes = - getWorkInProgressRootRenderLanes(); - var nextLanes = getNextLanes( - root, - root === workInProgressRoot - ? workInProgressRootRenderLanes - : NoLanes - ); + if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) { + return false; + } - if (includesSyncLane(nextLanes)) { - // This root has pending sync work. Flush it now. - didPerformSomeWork = true; - performSyncWorkOnRoot(root, nextLanes); - } - } + var keysA = Object.keys(objA); + var keysB = Object.keys(objB); - root = root.next; - } - } while (didPerformSomeWork); + if (keysA.length !== keysB.length) { + return false; + } // Test for A's keys different from B. + + + for (var i = 0; i < keysA.length; i++) { + var currentKey = keysA[i]; - isFlushingWork = false; + if (!hasOwnProperty.call(objB, currentKey) || // $FlowFixMe[incompatible-use] lost refinement of `objB` + !objectIs(objA[currentKey], objB[currentKey])) { + return false; } + } - function processRootScheduleInMicrotask() { - // This function is always called inside a microtask. It should never be - // called synchronously. - didScheduleMicrotask = false; + return true; +} - { - didScheduleMicrotask_act = false; - } // We'll recompute this as we iterate through all the roots and schedule them. - - mightHavePendingSyncWork = false; - var currentTime = now$1(); - var prev = null; - var root = firstScheduledRoot; - - while (root !== null) { - var next = root.next; - - if ( - currentEventTransitionLane !== NoLane && - shouldAttemptEagerTransition() - ) { - // A transition was scheduled during an event, but we're going to try to - // render it synchronously anyway. We do this during a popstate event to - // preserve the scroll position of the previous page. - upgradePendingLaneToSync(root, currentEventTransitionLane); - } - - var nextLanes = scheduleTaskForRootDuringMicrotask(root, currentTime); - - if (nextLanes === NoLane) { - // This root has no more pending work. Remove it from the schedule. To - // guard against subtle reentrancy bugs, this microtask is the only place - // we do this — you can add roots to the schedule whenever, but you can - // only remove them here. - // Null this out so we know it's been removed from the schedule. - root.next = null; - - if (prev === null) { - // This is the new head of the list - firstScheduledRoot = next; - } else { - prev.next = next; - } +var current = null; +var isRendering = false; +function getCurrentFiberOwnerNameInDevOrNull() { + { + if (current === null) { + return null; + } - if (next === null) { - // This is the new tail of the list - lastScheduledRoot = prev; - } - } else { - // This root still has work. Keep it in the list. - prev = root; + var owner = current._debugOwner; - if (includesSyncLane(nextLanes)) { - mightHavePendingSyncWork = true; - } - } + if (owner != null) { + return getComponentNameFromOwner(owner); + } + } - root = next; - } + return null; +} - currentEventTransitionLane = NoLane; // At the end of the microtask, flush any pending synchronous work. This has - // to come at the end, because it does actual rendering work that might throw. +function getCurrentFiberStackInDev() { + { + if (current === null) { + return ''; + } // Safe because if current fiber exists, we are reconciling, + // and it is guaranteed to be the work-in-progress version. - flushSyncWorkOnAllRoots(); - } - function scheduleTaskForRootDuringMicrotask(root, currentTime) { - // This function is always called inside a microtask, or at the very end of a - // rendering task right before we yield to the main thread. It should never be - // called synchronously. - // - // TODO: Unless enableDeferRootSchedulingToMicrotask is off. We need to land - // that ASAP to unblock additional features we have planned. - // - // This function also never performs React work synchronously; it should - // only schedule work to be performed later, in a separate task or microtask. - // Check if any lanes are being starved by other work. If so, mark them as - // expired so we know to work on those next. - markStarvedLanesAsExpired(root, currentTime); // Determine the next lanes to work on, and their priority. - - var workInProgressRoot = getWorkInProgressRoot(); - var workInProgressRootRenderLanes = getWorkInProgressRootRenderLanes(); - var nextLanes = getNextLanes( - root, - root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes - ); - var existingCallbackNode = root.callbackNode; - - if ( - // Check if there's nothing to work on - nextLanes === NoLanes || // If this root is currently suspended and waiting for data to resolve, don't - // schedule a task to render it. We'll either wait for a ping, or wait to - // receive an update. - // - // Suspended render phase - (root === workInProgressRoot && isWorkLoopSuspendedOnData()) || // Suspended commit phase - root.cancelPendingCommit !== null - ) { - // Fast path: There's nothing to work on. - if (existingCallbackNode !== null) { - cancelCallback(existingCallbackNode); - } + return getStackByFiberInDevAndProd(current); + } +} - root.callbackNode = null; - root.callbackPriority = NoLane; - return NoLane; - } // Schedule a new callback in the host environment. +function resetCurrentFiber() { + { + ReactSharedInternals.getCurrentStack = null; + current = null; + isRendering = false; + } +} +function setCurrentFiber(fiber) { + { + ReactSharedInternals.getCurrentStack = fiber === null ? null : getCurrentFiberStackInDev; + current = fiber; + isRendering = false; + } +} +function getCurrentFiber() { + { + return current; + } +} +function setIsRendering(rendering) { + { + isRendering = rendering; + } +} - if (includesSyncLane(nextLanes)) { - // Synchronous work is always flushed at the end of the microtask, so we - // don't need to schedule an additional task. - if (existingCallbackNode !== null) { - cancelCallback(existingCallbackNode); - } +var ReactStrictModeWarnings = { + recordUnsafeLifecycleWarnings: function (fiber, instance) {}, + flushPendingUnsafeLifecycleWarnings: function () {}, + recordLegacyContextWarning: function (fiber, instance) {}, + flushLegacyContextWarning: function () {}, + discardPendingWarnings: function () {} +}; - root.callbackPriority = SyncLane; - root.callbackNode = null; - return SyncLane; - } else { - // We use the highest priority lane to represent the priority of the callback. - var existingCallbackPriority = root.callbackPriority; - var newCallbackPriority = getHighestPriorityLane(nextLanes); - - if ( - newCallbackPriority === existingCallbackPriority && // Special case related to `act`. If the currently scheduled task is a - // Scheduler task, rather than an `act` task, cancel it and re-schedule - // on the `act` queue. - !( - ReactSharedInternals.actQueue !== null && - existingCallbackNode !== fakeActCallbackNode$1 - ) - ) { - // The priority hasn't changed. We can reuse the existing task. - return newCallbackPriority; - } else { - // Cancel the existing callback. We'll schedule a new one below. - cancelCallback(existingCallbackNode); - } +{ + var findStrictRoot = function (fiber) { + var maybeStrictRoot = null; + var node = fiber; - var schedulerPriorityLevel; + while (node !== null) { + if (node.mode & StrictLegacyMode) { + maybeStrictRoot = node; + } - switch (lanesToEventPriority(nextLanes)) { - case DiscreteEventPriority: - schedulerPriorityLevel = ImmediatePriority; - break; + node = node.return; + } - case ContinuousEventPriority: - schedulerPriorityLevel = UserBlockingPriority; - break; + return maybeStrictRoot; + }; - case DefaultEventPriority: - schedulerPriorityLevel = NormalPriority$1; - break; + var setToSortedString = function (set) { + var array = []; + set.forEach(function (value) { + array.push(value); + }); + return array.sort().join(', '); + }; - case IdleEventPriority: - schedulerPriorityLevel = IdlePriority; - break; + var pendingComponentWillMountWarnings = []; + var pendingUNSAFE_ComponentWillMountWarnings = []; + var pendingComponentWillReceivePropsWarnings = []; + var pendingUNSAFE_ComponentWillReceivePropsWarnings = []; + var pendingComponentWillUpdateWarnings = []; + var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about. - default: - schedulerPriorityLevel = NormalPriority$1; - break; - } + var didWarnAboutUnsafeLifecycles = new Set(); - var newCallbackNode = scheduleCallback$2( - schedulerPriorityLevel, - performConcurrentWorkOnRoot.bind(null, root) - ); - root.callbackPriority = newCallbackPriority; - root.callbackNode = newCallbackNode; - return newCallbackPriority; - } + ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function (fiber, instance) { + // Dedupe strategy: Warn once per component. + if (didWarnAboutUnsafeLifecycles.has(fiber.type)) { + return; } - function getContinuationForRoot(root, originalCallbackNode) { - // This is called at the end of `performConcurrentWorkOnRoot` to determine - // if we need to schedule a continuation task. - // - // Usually `scheduleTaskForRootDuringMicrotask` only runs inside a microtask; - // however, since most of the logic for determining if we need a continuation - // versus a new task is the same, we cheat a bit and call it here. This is - // only safe to do because we know we're at the end of the browser task. - // So although it's not an actual microtask, it might as well be. - scheduleTaskForRootDuringMicrotask(root, now$1()); - - if (root.callbackNode === originalCallbackNode) { - // The task node scheduled for this root is the same one that's - // currently executed. Need to return a continuation. - return performConcurrentWorkOnRoot.bind(null, root); - } + if (typeof instance.componentWillMount === 'function' && // Don't warn about react-lifecycles-compat polyfilled components. + instance.componentWillMount.__suppressDeprecationWarning !== true) { + pendingComponentWillMountWarnings.push(fiber); + } - return null; + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillMount === 'function') { + pendingUNSAFE_ComponentWillMountWarnings.push(fiber); } - var fakeActCallbackNode$1 = {}; - function scheduleCallback$2(priorityLevel, callback) { - if (ReactSharedInternals.actQueue !== null) { - // Special case: We're inside an `act` scope (a testing utility). - // Instead of scheduling work in the host environment, add it to a - // fake internal queue that's managed by the `act` implementation. - ReactSharedInternals.actQueue.push(callback); - return fakeActCallbackNode$1; - } else { - return scheduleCallback$3(priorityLevel, callback); - } + if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) { + pendingComponentWillReceivePropsWarnings.push(fiber); } - function cancelCallback(callbackNode) { - if (callbackNode === fakeActCallbackNode$1); - else if (callbackNode !== null) { - cancelCallback$1(callbackNode); - } + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber); } - function scheduleImmediateTask(cb) { - if (ReactSharedInternals.actQueue !== null) { - // Special case: Inside an `act` scope, we push microtasks to the fake `act` - // callback queue. This is because we currently support calling `act` - // without awaiting the result. The plan is to deprecate that, and require - // that you always await the result so that the microtasks have a chance to - // run. But it hasn't happened yet. - ReactSharedInternals.actQueue.push(function () { - cb(); - return null; - }); - } // TODO: Can we land supportsMicrotasks? Which environments don't support it? - // Alternatively, can we move this check to the host config? + if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) { + pendingComponentWillUpdateWarnings.push(fiber); + } - { - // If microtasks are not supported, use Scheduler. - scheduleCallback$3(ImmediatePriority, cb); - } + if (fiber.mode & StrictLegacyMode && typeof instance.UNSAFE_componentWillUpdate === 'function') { + pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber); } + }; - function requestTransitionLane( // This argument isn't used, it's only here to encourage the caller to - // check that it's inside a transition before calling this function. - // TODO: Make this non-nullable. Requires a tweak to useOptimistic. - transition - ) { - // The algorithm for assigning an update to a lane should be stable for all - // updates at the same priority within the same event. To do this, the - // inputs to the algorithm must be the same. - // - // The trick we use is to cache the first of each of these inputs within an - // event. Then reset the cached values once we can be sure the event is - // over. Our heuristic for that is whenever we enter a concurrent work loop. - if (currentEventTransitionLane === NoLane) { - // All transitions within the same event are assigned the same lane. - currentEventTransitionLane = claimNextTransitionLane(); - } + ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = function () { + // We do an initial pass to gather component names + var componentWillMountUniqueNames = new Set(); - return currentEventTransitionLane; + if (pendingComponentWillMountWarnings.length > 0) { + pendingComponentWillMountWarnings.forEach(function (fiber) { + componentWillMountUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillMountWarnings = []; } - // transition updates that occur while the async action is still in progress - // are treated as part of the action. - // - // The ideal behavior would be to treat each async function as an independent - // action. However, without a mechanism like AsyncContext, we can't tell which - // action an update corresponds to. So instead, we entangle them all into one. - // The listeners to notify once the entangled scope completes. - - var currentEntangledListeners = null; // The number of pending async actions in the entangled scope. - - var currentEntangledPendingCount = 0; // The transition lane shared by all updates in the entangled scope. - - var currentEntangledLane = NoLane; // A thenable that resolves when the entangled scope completes. It does not - // resolve to a particular value because it's only used for suspending the UI - // until the async action scope has completed. - - var currentEntangledActionThenable = null; - function entangleAsyncAction(transition, thenable) { - // `thenable` is the return value of the async action scope function. Create - // a combined thenable that resolves once every entangled scope function - // has finished. - if (currentEntangledListeners === null) { - // There's no outer async action scope. Create a new one. - var entangledListeners = (currentEntangledListeners = []); - currentEntangledPendingCount = 0; - currentEntangledLane = requestTransitionLane(); - var entangledThenable = { - status: "pending", - value: undefined, - then: function (resolve) { - entangledListeners.push(resolve); - } - }; - currentEntangledActionThenable = entangledThenable; - } + var UNSAFE_componentWillMountUniqueNames = new Set(); - currentEntangledPendingCount++; - thenable.then(pingEngtangledActionScope, pingEngtangledActionScope); - return thenable; + if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) { + pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) { + UNSAFE_componentWillMountUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillMountWarnings = []; } - function pingEngtangledActionScope() { - if ( - currentEntangledListeners !== null && - --currentEntangledPendingCount === 0 - ) { - // All the actions have finished. Close the entangled async action scope - // and notify all the listeners. - if (currentEntangledActionThenable !== null) { - var fulfilledThenable = currentEntangledActionThenable; - fulfilledThenable.status = "fulfilled"; - } + var componentWillReceivePropsUniqueNames = new Set(); + + if (pendingComponentWillReceivePropsWarnings.length > 0) { + pendingComponentWillReceivePropsWarnings.forEach(function (fiber) { + componentWillReceivePropsUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillReceivePropsWarnings = []; + } - var listeners = currentEntangledListeners; - currentEntangledListeners = null; - currentEntangledLane = NoLane; - currentEntangledActionThenable = null; + var UNSAFE_componentWillReceivePropsUniqueNames = new Set(); - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; - listener(); - } - } + if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) { + pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach(function (fiber) { + UNSAFE_componentWillReceivePropsUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillReceivePropsWarnings = []; } - function chainThenableValue(thenable, result) { - // Equivalent to: Promise.resolve(thenable).then(() => result), except we can - // cheat a bit since we know that that this thenable is only ever consumed - // by React. - // - // We don't technically require promise support on the client yet, hence this - // extra code. - var listeners = []; - var thenableWithOverride = { - status: "pending", - value: null, - reason: null, - then: function (resolve) { - listeners.push(resolve); - } - }; - thenable.then( - function (value) { - var fulfilledThenable = thenableWithOverride; - fulfilledThenable.status = "fulfilled"; - fulfilledThenable.value = result; - - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; - listener(result); - } - }, - function (error) { - var rejectedThenable = thenableWithOverride; - rejectedThenable.status = "rejected"; - rejectedThenable.reason = error; - - for (var i = 0; i < listeners.length; i++) { - var listener = listeners[i]; // This is a perf hack where we call the `onFulfill` ping function - // instead of `onReject`, because we know that React is the only - // consumer of these promises, and it passes the same listener to both. - // We also know that it will read the error directly off the - // `.reason` field. - - listener(undefined); - } - } - ); - return thenableWithOverride; + var componentWillUpdateUniqueNames = new Set(); + + if (pendingComponentWillUpdateWarnings.length > 0) { + pendingComponentWillUpdateWarnings.forEach(function (fiber) { + componentWillUpdateUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingComponentWillUpdateWarnings = []; } - function peekEntangledActionLane() { - return currentEntangledLane; + + var UNSAFE_componentWillUpdateUniqueNames = new Set(); + + if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) { + pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) { + UNSAFE_componentWillUpdateUniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutUnsafeLifecycles.add(fiber.type); + }); + pendingUNSAFE_ComponentWillUpdateWarnings = []; + } // Finally, we flush all the warnings + // UNSAFE_ ones before the deprecated ones, since they'll be 'louder' + + + if (UNSAFE_componentWillMountUniqueNames.size > 0) { + var sortedNames = setToSortedString(UNSAFE_componentWillMountUniqueNames); + + error('Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '\nPlease update the following components: %s', sortedNames); } - function peekEntangledActionThenable() { - return currentEntangledActionThenable; + + if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) { + var _sortedNames = setToSortedString(UNSAFE_componentWillReceivePropsUniqueNames); + + error('Using UNSAFE_componentWillReceiveProps in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, " + 'refactor your code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n' + '\nPlease update the following components: %s', _sortedNames); } - var UpdateState = 0; - var ReplaceState = 1; - var ForceUpdate = 2; - var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`. - // It should only be read right after calling `processUpdateQueue`, via - // `checkHasForceUpdateAfterProcessing`. + if (UNSAFE_componentWillUpdateUniqueNames.size > 0) { + var _sortedNames2 = setToSortedString(UNSAFE_componentWillUpdateUniqueNames); - var hasForceUpdate = false; - var didWarnUpdateInsideUpdate; - var currentlyProcessingQueue; + error('Using UNSAFE_componentWillUpdate in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '\nPlease update the following components: %s', _sortedNames2); + } - { - didWarnUpdateInsideUpdate = false; - currentlyProcessingQueue = null; - } - - function initializeUpdateQueue(fiber) { - var queue = { - baseState: fiber.memoizedState, - firstBaseUpdate: null, - lastBaseUpdate: null, - shared: { - pending: null, - lanes: NoLanes, - hiddenCallbacks: null - }, - callbacks: null - }; - fiber.updateQueue = queue; + if (componentWillMountUniqueNames.size > 0) { + var _sortedNames3 = setToSortedString(componentWillMountUniqueNames); + + warn('componentWillMount has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '* Rename componentWillMount to UNSAFE_componentWillMount to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames3); } - function cloneUpdateQueue(current, workInProgress) { - // Clone the update queue from current. Unless it's already a clone. - var queue = workInProgress.updateQueue; - var currentQueue = current.updateQueue; - if (queue === currentQueue) { - var clone = { - baseState: currentQueue.baseState, - firstBaseUpdate: currentQueue.firstBaseUpdate, - lastBaseUpdate: currentQueue.lastBaseUpdate, - shared: currentQueue.shared, - callbacks: null - }; - workInProgress.updateQueue = clone; - } + if (componentWillReceivePropsUniqueNames.size > 0) { + var _sortedNames4 = setToSortedString(componentWillReceivePropsUniqueNames); + + warn('componentWillReceiveProps has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, refactor your " + 'code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n' + '* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames4); } - function createUpdate(lane) { - var update = { - lane: lane, - tag: UpdateState, - payload: null, - callback: null, - next: null - }; - return update; + + if (componentWillUpdateUniqueNames.size > 0) { + var _sortedNames5 = setToSortedString(componentWillUpdateUniqueNames); + + warn('componentWillUpdate has been renamed, and is not recommended for use. ' + 'See https://react.dev/link/unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress ' + 'this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames5); } - function enqueueUpdate(fiber, update, lane) { - var updateQueue = fiber.updateQueue; + }; - if (updateQueue === null) { - // Only occurs if the fiber has been unmounted. - return null; - } + var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about. - var sharedQueue = updateQueue.shared; + var didWarnAboutLegacyContext = new Set(); - { - if ( - currentlyProcessingQueue === sharedQueue && - !didWarnUpdateInsideUpdate - ) { - var componentName = getComponentNameFromFiber(fiber); + ReactStrictModeWarnings.recordLegacyContextWarning = function (fiber, instance) { + var strictRoot = findStrictRoot(fiber); - error( - "An update (setState, replaceState, or forceUpdate) was scheduled " + - "from inside an update function. Update functions should be pure, " + - "with zero side-effects. Consider using componentDidUpdate or a " + - "callback.\n\nPlease update the following component: %s", - componentName - ); + if (strictRoot === null) { + error('Expected to find a StrictMode component in a strict mode tree. ' + 'This error is likely caused by a bug in React. Please file an issue.'); - didWarnUpdateInsideUpdate = true; - } - } + return; + } // Dedup strategy: Warn once per component. - if (isUnsafeClassRenderPhaseUpdate()) { - // This is an unsafe render phase update. Add directly to the update - // queue so we can process it immediately during the current render. - var pending = sharedQueue.pending; - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + if (didWarnAboutLegacyContext.has(fiber.type)) { + return; + } - sharedQueue.pending = update; // Update the childLanes even though we're most likely already rendering - // this fiber. This is for backwards compatibility in the case where you - // update a different component during render phase than the one that is - // currently renderings (a pattern that is accompanied by a warning). + var warningsForRoot = pendingLegacyContextWarning.get(strictRoot); - return unsafe_markUpdateLaneFromFiberToRoot(fiber, lane); - } else { - return enqueueConcurrentClassUpdate(fiber, sharedQueue, update, lane); + if (fiber.type.contextTypes != null || fiber.type.childContextTypes != null || instance !== null && typeof instance.getChildContext === 'function') { + if (warningsForRoot === undefined) { + warningsForRoot = []; + pendingLegacyContextWarning.set(strictRoot, warningsForRoot); } + + warningsForRoot.push(fiber); } - function entangleTransitions(root, fiber, lane) { - var updateQueue = fiber.updateQueue; + }; - if (updateQueue === null) { - // Only occurs if the fiber has been unmounted. + ReactStrictModeWarnings.flushLegacyContextWarning = function () { + pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) { + if (fiberArray.length === 0) { return; } - var sharedQueue = updateQueue.shared; + var firstFiber = fiberArray[0]; + var uniqueNames = new Set(); + fiberArray.forEach(function (fiber) { + uniqueNames.add(getComponentNameFromFiber(fiber) || 'Component'); + didWarnAboutLegacyContext.add(fiber.type); + }); + var sortedNames = setToSortedString(uniqueNames); - if (isTransitionLane(lane)) { - var queueLanes = sharedQueue.lanes; // If any entangled lanes are no longer pending on the root, then they must - // have finished. We can remove them from the shared queue, which represents - // a superset of the actually pending lanes. In some cases we may entangle - // more than we need to, but that's OK. In fact it's worse if we *don't* - // entangle when we should. + try { + setCurrentFiber(firstFiber); - queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + error('Legacy context API has been detected within a strict-mode tree.' + '\n\nThe old API will be supported in all 16.x releases, but applications ' + 'using it should migrate to the new version.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here: https://react.dev/link/legacy-context', sortedNames); + } finally { + resetCurrentFiber(); + } + }); + }; + + ReactStrictModeWarnings.discardPendingWarnings = function () { + pendingComponentWillMountWarnings = []; + pendingUNSAFE_ComponentWillMountWarnings = []; + pendingComponentWillReceivePropsWarnings = []; + pendingUNSAFE_ComponentWillReceivePropsWarnings = []; + pendingComponentWillUpdateWarnings = []; + pendingUNSAFE_ComponentWillUpdateWarnings = []; + pendingLegacyContextWarning = new Map(); + }; +} - var newQueueLanes = mergeLanes(queueLanes, lane); - sharedQueue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if - // the lane finished since the last time we entangled it. So we need to - // entangle it again, just to be sure. +function getThenablesFromState(state) { + { + var devState = state; + return devState.thenables; + } +} // An error that is thrown (e.g. by `use`) to trigger Suspense. If we +// detect this is caught by userspace, we'll log a warning in development. - markRootEntangled(root, newQueueLanes); - } - } - function enqueueCapturedUpdate(workInProgress, capturedUpdate) { - // Captured updates are updates that are thrown by a child during the render - // phase. They should be discarded if the render is aborted. Therefore, - // we should only put them on the work-in-progress queue, not the current one. - var queue = workInProgress.updateQueue; // Check if the work-in-progress queue is a clone. - var current = workInProgress.alternate; +var SuspenseException = new Error("Suspense Exception: This is not a real error! It's an implementation " + 'detail of `use` to interrupt the current render. You must either ' + 'rethrow it immediately, or move the `use` call outside of the ' + '`try/catch` block. Capturing without rethrowing will lead to ' + 'unexpected behavior.\n\n' + 'To handle async errors, wrap your component in an error boundary, or ' + "call the promise's `.catch` method and pass the result to `use`"); +var SuspenseyCommitException = new Error('Suspense Exception: This is not a real error, and should not leak into ' + "userspace. If you're seeing this, it's likely a bug in React."); // This is a noop thenable that we use to trigger a fallback in throwException. +// TODO: It would be better to refactor throwException into multiple functions +// so we can trigger a fallback directly without having to check the type. But +// for now this will do. - if (current !== null) { - var currentQueue = current.updateQueue; - - if (queue === currentQueue) { - // The work-in-progress queue is the same as current. This happens when - // we bail out on a parent fiber that then captures an error thrown by - // a child. Since we want to append the update only to the work-in - // -progress queue, we need to clone the updates. We usually clone during - // processUpdateQueue, but that didn't happen in this case because we - // skipped over the parent when we bailed out. - var newFirst = null; - var newLast = null; - var firstBaseUpdate = queue.firstBaseUpdate; - - if (firstBaseUpdate !== null) { - // Loop through the updates and clone them. - var update = firstBaseUpdate; +var noopSuspenseyCommitThenable = { + then: function () { + { + error('Internal React error: A listener was unexpectedly attached to a ' + '"noop" thenable. This is a bug in React. Please file an issue.'); + } + } +}; +function createThenableState() { + // The ThenableState is created the first time a component suspends. If it + // suspends again, we'll reuse the same state. + { + return { + didWarnAboutUncachedPromise: false, + thenables: [] + }; + } +} +function isThenableResolved(thenable) { + var status = thenable.status; + return status === 'fulfilled' || status === 'rejected'; +} - do { - var clone = { - lane: update.lane, - tag: update.tag, - payload: update.payload, - // When this update is rebased, we should not fire its - // callback again. - callback: null, - next: null - }; +function noop() {} - if (newLast === null) { - newFirst = newLast = clone; - } else { - newLast.next = clone; - newLast = clone; - } // $FlowFixMe[incompatible-type] we bail out when we get a null +function trackUsedThenable(thenableState, thenable, index) { + if (ReactSharedInternals.actQueue !== null) { + ReactSharedInternals.didUsePromise = true; + } - update = update.next; - } while (update !== null); // Append the captured update the end of the cloned list. + var trackedThenables = getThenablesFromState(thenableState); + var previous = trackedThenables[index]; - if (newLast === null) { - newFirst = newLast = capturedUpdate; - } else { - newLast.next = capturedUpdate; - newLast = capturedUpdate; - } - } else { - // There are no base updates. - newFirst = newLast = capturedUpdate; - } + if (previous === undefined) { + trackedThenables.push(thenable); + } else { + if (previous !== thenable) { + // Reuse the previous thenable, and drop the new one. We can assume + // they represent the same value, because components are idempotent. + { + var thenableStateDev = thenableState; - queue = { - baseState: currentQueue.baseState, - firstBaseUpdate: newFirst, - lastBaseUpdate: newLast, - shared: currentQueue.shared, - callbacks: currentQueue.callbacks - }; - workInProgress.updateQueue = queue; - return; + if (!thenableStateDev.didWarnAboutUncachedPromise) { + // We should only warn the first time an uncached thenable is + // discovered per component, because if there are multiple, the + // subsequent ones are likely derived from the first. + // + // We track this on the thenableState instead of deduping using the + // component name like we usually do, because in the case of a + // promise-as-React-node, the owner component is likely different from + // the parent that's currently being reconciled. We'd have to track + // the owner using state, which we're trying to move away from. Though + // since this is dev-only, maybe that'd be OK. + // + // However, another benefit of doing it this way is we might + // eventually have a thenableState per memo/Forget boundary instead + // of per component, so this would allow us to have more + // granular warnings. + thenableStateDev.didWarnAboutUncachedPromise = true; // TODO: This warning should link to a corresponding docs page. + + error('A component was suspended by an uncached promise. Creating ' + 'promises inside a Client Component or hook is not yet ' + 'supported, except via a Suspense-compatible library or framework.'); } - } // Append the update to the end of the list. + } // Avoid an unhandled rejection errors for the Promises that we'll + // intentionally ignore. - var lastBaseUpdate = queue.lastBaseUpdate; - if (lastBaseUpdate === null) { - queue.firstBaseUpdate = capturedUpdate; - } else { - lastBaseUpdate.next = capturedUpdate; + thenable.then(noop, noop); + thenable = previous; + } + } // We use an expando to track the status and result of a thenable so that we + // can synchronously unwrap the value. Think of this as an extension of the + // Promise API, or a custom interface that is a superset of Thenable. + // + // If the thenable doesn't have a status, set it to "pending" and attach + // a listener that will update its status and result when it resolves. + + + switch (thenable.status) { + case 'fulfilled': + { + var fulfilledValue = thenable.value; + return fulfilledValue; } - queue.lastBaseUpdate = capturedUpdate; - } + case 'rejected': + { + var rejectedError = thenable.reason; + checkIfUseWrappedInAsyncCatch(rejectedError); + throw rejectedError; + } - function getStateFromUpdate( - workInProgress, - queue, - update, - prevState, - nextProps, - instance - ) { - switch (update.tag) { - case ReplaceState: { - var payload = update.payload; + default: + { + if (typeof thenable.status === 'string') { + // Only instrument the thenable if the status if not defined. If + // it's defined, but an unknown value, assume it's been instrumented by + // some custom userspace implementation. We treat it as "pending". + // Attach a dummy listener, to ensure that any lazy initialization can + // happen. Flight lazily parses JSON when the value is actually awaited. + thenable.then(noop, noop); + } else { + // This is an uncached thenable that we haven't seen before. + // Detect infinite ping loops caused by uncached promises. + var root = getWorkInProgressRoot(); - if (typeof payload === "function") { - // Updater function - { - enterDisallowedContextReadInDEV(); + if (root !== null && root.shellSuspendCounter > 100) { + // This root has suspended repeatedly in the shell without making any + // progress (i.e. committing something). This is highly suggestive of + // an infinite ping loop, often caused by an accidental Async Client + // Component. + // + // During a transition, we can suspend the work loop until the promise + // to resolve, but this is a sync render, so that's not an option. We + // also can't show a fallback, because none was provided. So our last + // resort is to throw an error. + // + // TODO: Remove this error in a future release. Other ways of handling + // this case include forcing a concurrent render, or putting the whole + // root into offscreen mode. + throw new Error('async/await is not yet supported in Client Components, only ' + 'Server Components. This error is often caused by accidentally ' + "adding `'use client'` to a module that was originally written " + 'for the server.'); + } + + var pendingThenable = thenable; + pendingThenable.status = 'pending'; + pendingThenable.then(function (fulfilledValue) { + if (thenable.status === 'pending') { + var fulfilledThenable = thenable; + fulfilledThenable.status = 'fulfilled'; + fulfilledThenable.value = fulfilledValue; + } + }, function (error) { + if (thenable.status === 'pending') { + var rejectedThenable = thenable; + rejectedThenable.status = 'rejected'; + rejectedThenable.reason = error; } + }); + } // Check one more time in case the thenable resolved synchronously. - var nextState = payload.call(instance, prevState, nextProps); + switch (thenable.status) { + case 'fulfilled': { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); - - try { - payload.call(instance, prevState, nextProps); - } finally { - setIsStrictModeForDevtools(false); - } - } + var fulfilledThenable = thenable; + return fulfilledThenable.value; + } - exitDisallowedContextReadInDEV(); + case 'rejected': + { + var rejectedThenable = thenable; + var _rejectedError = rejectedThenable.reason; + checkIfUseWrappedInAsyncCatch(_rejectedError); + throw _rejectedError; } + } // Suspend. + // + // Throwing here is an implementation detail that allows us to unwind the + // call stack. But we shouldn't allow it to leak into userspace. Throw an + // opaque placeholder value instead of the actual thenable. If it doesn't + // get captured by the work loop, log a warning, because that means + // something in userspace must have caught it. - return nextState; - } // State object - return payload; - } + suspendedThenable = thenable; - case CaptureUpdate: { - workInProgress.flags = - (workInProgress.flags & ~ShouldCapture) | DidCapture; + { + needsToResetSuspendedThenableDEV = true; } - // Intentional fallthrough - case UpdateState: { - var _payload = update.payload; - var partialState; - - if (typeof _payload === "function") { - // Updater function - { - enterDisallowedContextReadInDEV(); - } + throw SuspenseException; + } + } +} +// passed to the rest of the Suspense implementation — which, for historical +// reasons, expects to receive a thenable. + +var suspendedThenable = null; +var needsToResetSuspendedThenableDEV = false; +function getSuspendedThenable() { + // This is called right after `use` suspends by throwing an exception. `use` + // throws an opaque value instead of the thenable itself so that it can't be + // caught in userspace. Then the work loop accesses the actual thenable using + // this function. + if (suspendedThenable === null) { + throw new Error('Expected a suspended thenable. This is a bug in React. Please file ' + 'an issue.'); + } + + var thenable = suspendedThenable; + suspendedThenable = null; + + { + needsToResetSuspendedThenableDEV = false; + } + + return thenable; +} +function checkIfUseWrappedInTryCatch() { + { + // This was set right before SuspenseException was thrown, and it should + // have been cleared when the exception was handled. If it wasn't, + // it must have been caught by userspace. + if (needsToResetSuspendedThenableDEV) { + needsToResetSuspendedThenableDEV = false; + return true; + } + } - partialState = _payload.call(instance, prevState, nextProps); + return false; +} +function checkIfUseWrappedInAsyncCatch(rejectedReason) { + // This check runs in prod, too, because it prevents a more confusing + // downstream error, where SuspenseException is caught by a promise and + // thrown asynchronously. + // TODO: Another way to prevent SuspenseException from leaking into an async + // execution context is to check the dispatcher every time `use` is called, + // or some equivalent. That might be preferable for other reasons, too, since + // it matches how we prevent similar mistakes for other hooks. + if (rejectedReason === SuspenseException) { + throw new Error('Hooks are not supported inside an async component. This ' + "error is often caused by accidentally adding `'use client'` " + 'to a module that was originally written for the server.'); + } +} - { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); +var thenableState$1 = null; +var thenableIndexCounter$1 = 0; + +function mergeDebugInfo(outer, inner) { + + if (inner == null) { + return outer; + } else if (outer === null) { + return inner; + } else { + // If we have two debugInfo, we need to create a new one. This makes the array no longer + // live so we'll miss any future updates if we received more so ideally we should always + // do this after both have fully resolved/unsuspended. + return outer.concat(inner); + } +} - try { - _payload.call(instance, prevState, nextProps); - } finally { - setIsStrictModeForDevtools(false); - } - } +var didWarnAboutMaps; +var didWarnAboutGenerators; +var ownerHasKeyUseWarning; +var ownerHasFunctionTypeWarning; +var ownerHasSymbolTypeWarning; - exitDisallowedContextReadInDEV(); - } - } else { - // Partial state object - partialState = _payload; - } +var warnForMissingKey = function (child, returnFiber) {}; - if (partialState === null || partialState === undefined) { - // Null and undefined are treated as no-ops. - return prevState; - } // Merge the partial state and the previous state. +{ + didWarnAboutMaps = false; + didWarnAboutGenerators = false; + /** + * Warn if there's no key explicitly set on dynamic arrays of children or + * object keys are not valid. This allows us to keep track of children between + * updates. + */ - return assign({}, prevState, partialState); - } + ownerHasKeyUseWarning = {}; + ownerHasFunctionTypeWarning = {}; + ownerHasSymbolTypeWarning = {}; - case ForceUpdate: { - hasForceUpdate = true; - return prevState; - } - } + warnForMissingKey = function (child, returnFiber) { + if (child === null || typeof child !== 'object') { + return; + } - return prevState; + if (!child._store || child._store.validated || child.key != null) { + return; } - var didReadFromEntangledAsyncAction = false; // Each call to processUpdateQueue should be accompanied by a call to this. It's - // only in a separate function because in updateHostRoot, it must happen after - // all the context stacks have been pushed to, to prevent a stack mismatch. A - // bit unfortunate. + if (typeof child._store !== 'object') { + throw new Error('React Component in warnForMissingKey should have a _store. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } // $FlowFixMe[cannot-write] unable to narrow type from mixed to writable object - function suspendIfUpdateReadFromEntangledAsyncAction() { - // Check if this update is part of a pending async action. If so, we'll - // need to suspend until the action has finished, so that it's batched - // together with future updates in the same action. - // TODO: Once we support hooks inside useMemo (or an equivalent - // memoization boundary like Forget), hoist this logic so that it only - // suspends if the memo boundary produces a new value. - if (didReadFromEntangledAsyncAction) { - var entangledActionThenable = peekEntangledActionThenable(); - if (entangledActionThenable !== null) { - // TODO: Instead of the throwing the thenable directly, throw a - // special object like `use` does so we can detect if it's captured - // by userspace. - throw entangledActionThenable; - } - } - } - function processUpdateQueue(workInProgress, props, instance, renderLanes) { - didReadFromEntangledAsyncAction = false; // This is always non-null on a ClassComponent or HostRoot + child._store.validated = true; + var componentName = getComponentNameFromFiber(returnFiber) || 'Component'; - var queue = workInProgress.updateQueue; - hasForceUpdate = false; + if (ownerHasKeyUseWarning[componentName]) { + return; + } - { - currentlyProcessingQueue = queue.shared; - } + ownerHasKeyUseWarning[componentName] = true; - var firstBaseUpdate = queue.firstBaseUpdate; - var lastBaseUpdate = queue.lastBaseUpdate; // Check if there are pending updates. If so, transfer them to the base queue. + error('Each child in a list should have a unique ' + '"key" prop. See https://react.dev/link/warning-keys for ' + 'more information.'); + }; +} - var pendingQueue = queue.shared.pending; +function unwrapThenable(thenable) { + var index = thenableIndexCounter$1; + thenableIndexCounter$1 += 1; - if (pendingQueue !== null) { - queue.shared.pending = null; // The pending queue is circular. Disconnect the pointer between first - // and last so that it's non-circular. + if (thenableState$1 === null) { + thenableState$1 = createThenableState(); + } - var lastPendingUpdate = pendingQueue; - var firstPendingUpdate = lastPendingUpdate.next; - lastPendingUpdate.next = null; // Append pending updates to base queue + return trackUsedThenable(thenableState$1, thenable, index); +} - if (lastBaseUpdate === null) { - firstBaseUpdate = firstPendingUpdate; - } else { - lastBaseUpdate.next = firstPendingUpdate; - } +function coerceRef(returnFiber, current, workInProgress, element) { + var ref; - lastBaseUpdate = lastPendingUpdate; // If there's a current queue, and it's different from the base queue, then - // we need to transfer the updates to that queue, too. Because the base - // queue is a singly-linked list with no cycles, we can append to both - // lists and take advantage of structural sharing. - // TODO: Pass `current` as argument + { + // Old behavior. + ref = element.ref; + } // TODO: If enableRefAsProp is on, we shouldn't use the `ref` field. We + // should always read the ref from the prop. - var current = workInProgress.alternate; - if (current !== null) { - // This is always non-null on a ClassComponent or HostRoot - var currentQueue = current.updateQueue; - var currentLastBaseUpdate = currentQueue.lastBaseUpdate; + workInProgress.ref = ref; +} - if (currentLastBaseUpdate !== lastBaseUpdate) { - if (currentLastBaseUpdate === null) { - currentQueue.firstBaseUpdate = firstPendingUpdate; - } else { - currentLastBaseUpdate.next = firstPendingUpdate; - } +function throwOnInvalidObjectType(returnFiber, newChild) { + // $FlowFixMe[method-unbinding] + var childString = Object.prototype.toString.call(newChild); + throw new Error("Objects are not valid as a React child (found: " + (childString === '[object Object]' ? 'object with keys {' + Object.keys(newChild).join(', ') + '}' : childString) + "). " + 'If you meant to render a collection of children, use an array ' + 'instead.'); +} - currentQueue.lastBaseUpdate = lastPendingUpdate; - } - } - } // These values may change as we process the queue. +function warnOnFunctionType(returnFiber, invalidChild) { + { + var parentName = getComponentNameFromFiber(returnFiber) || 'Component'; - if (firstBaseUpdate !== null) { - // Iterate through the list of updates to compute the result. - var newState = queue.baseState; // TODO: Don't need to accumulate this. Instead, we can remove renderLanes - // from the original lanes. - - var newLanes = NoLanes; - var newBaseState = null; - var newFirstBaseUpdate = null; - var newLastBaseUpdate = null; - var update = firstBaseUpdate; + if (ownerHasFunctionTypeWarning[parentName]) { + return; + } - do { - // An extra OffscreenLane bit is added to updates that were made to - // a hidden tree, so that we can distinguish them from updates that were - // already there when the tree was hidden. - var updateLane = removeLanes(update.lane, OffscreenLane); - var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then - // it's not a "base" update and we should disregard the extra base lanes - // that were added to renderLanes when we entered the Offscreen tree. - - var shouldSkipUpdate = isHiddenUpdate - ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) - : !isSubsetOfLanes(renderLanes, updateLane); - - if (shouldSkipUpdate) { - // Priority is insufficient. Skip this update. If this is the first - // skipped update, the previous update/state is the new base - // update/state. - var clone = { - lane: updateLane, - tag: update.tag, - payload: update.payload, - callback: update.callback, - next: null - }; + ownerHasFunctionTypeWarning[parentName] = true; + var name = invalidChild.displayName || invalidChild.name || 'Component'; - if (newLastBaseUpdate === null) { - newFirstBaseUpdate = newLastBaseUpdate = clone; - newBaseState = newState; - } else { - newLastBaseUpdate = newLastBaseUpdate.next = clone; - } // Update the remaining priority in the queue. + if (returnFiber.tag === HostRoot) { + error('Functions are not valid as a React child. This may happen if ' + 'you return %s instead of <%s /> from render. ' + 'Or maybe you meant to call this function rather than return it.\n' + ' root.render(%s)', name, name, name); + } else { + error('Functions are not valid as a React child. This may happen if ' + 'you return %s instead of <%s /> from render. ' + 'Or maybe you meant to call this function rather than return it.\n' + ' <%s>{%s}', name, name, parentName, name, parentName); + } + } +} - newLanes = mergeLanes(newLanes, updateLane); - } else { - // This update does have sufficient priority. - // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - if ( - updateLane !== NoLane && - updateLane === peekEntangledActionLane() - ) { - didReadFromEntangledAsyncAction = true; - } +function warnOnSymbolType(returnFiber, invalidChild) { + { + var parentName = getComponentNameFromFiber(returnFiber) || 'Component'; - if (newLastBaseUpdate !== null) { - var _clone = { - // This update is going to be committed so we never want uncommit - // it. Using NoLane works because 0 is a subset of all bitmasks, so - // this will never be skipped by the check above. - lane: NoLane, - tag: update.tag, - payload: update.payload, - // When this update is rebased, we should not fire its - // callback again. - callback: null, - next: null - }; - newLastBaseUpdate = newLastBaseUpdate.next = _clone; - } // Process this update. - - newState = getStateFromUpdate( - workInProgress, - queue, - update, - newState, - props, - instance - ); - var callback = update.callback; + if (ownerHasSymbolTypeWarning[parentName]) { + return; + } - if (callback !== null) { - workInProgress.flags |= Callback; + ownerHasSymbolTypeWarning[parentName] = true; // eslint-disable-next-line react-internal/safe-string-coercion - if (isHiddenUpdate) { - workInProgress.flags |= Visibility; - } + var name = String(invalidChild); - var callbacks = queue.callbacks; + if (returnFiber.tag === HostRoot) { + error('Symbols are not valid as a React child.\n' + ' root.render(%s)', name); + } else { + error('Symbols are not valid as a React child.\n' + ' <%s>%s', parentName, name, parentName); + } + } +} - if (callbacks === null) { - queue.callbacks = [callback]; - } else { - callbacks.push(callback); - } - } - } // $FlowFixMe[incompatible-type] we bail out when we get a null +function resolveLazy(lazyType) { + var payload = lazyType._payload; + var init = lazyType._init; + return init(payload); +} // This wrapper function exists because I expect to clone the code in each path +// to be able to optimize each path individually by branching early. This needs +// a compiler or we can do it manually. Helpers that don't need this branching +// live outside of this function. - update = update.next; - if (update === null) { - pendingQueue = queue.shared.pending; +function createChildReconciler(shouldTrackSideEffects) { + function deleteChild(returnFiber, childToDelete) { + if (!shouldTrackSideEffects) { + // Noop. + return; + } - if (pendingQueue === null) { - break; - } else { - // An update was scheduled from inside a reducer. Add the new - // pending updates to the end of the list and keep processing. - var _lastPendingUpdate = pendingQueue; // Intentionally unsound. Pending updates form a circular list, but we - // unravel them when transferring them to the base queue. - - var _firstPendingUpdate = _lastPendingUpdate.next; - _lastPendingUpdate.next = null; - update = _firstPendingUpdate; - queue.lastBaseUpdate = _lastPendingUpdate; - queue.shared.pending = null; - } - } - } while (true); + var deletions = returnFiber.deletions; - if (newLastBaseUpdate === null) { - newBaseState = newState; - } + if (deletions === null) { + returnFiber.deletions = [childToDelete]; + returnFiber.flags |= ChildDeletion; + } else { + deletions.push(childToDelete); + } + } - queue.baseState = newBaseState; - queue.firstBaseUpdate = newFirstBaseUpdate; - queue.lastBaseUpdate = newLastBaseUpdate; + function deleteRemainingChildren(returnFiber, currentFirstChild) { + if (!shouldTrackSideEffects) { + // Noop. + return null; + } // TODO: For the shouldClone case, this could be micro-optimized a bit by + // assuming that after the first child we've already added everything. - if (firstBaseUpdate === null) { - // `queue.lanes` is used for entangling transitions. We can set it back to - // zero once the queue is empty. - queue.shared.lanes = NoLanes; - } // Set the remaining expiration time to be whatever is remaining in the queue. - // This should be fine because the only two other things that contribute to - // expiration time are props and context. We're already in the middle of the - // begin phase by the time we start processing the queue, so we've already - // dealt with the props. Context in components that specify - // shouldComponentUpdate is tricky; but we'll have to account for - // that regardless. - markSkippedUpdateLanes(newLanes); - workInProgress.lanes = newLanes; - workInProgress.memoizedState = newState; - } + var childToDelete = currentFirstChild; - { - currentlyProcessingQueue = null; - } + while (childToDelete !== null) { + deleteChild(returnFiber, childToDelete); + childToDelete = childToDelete.sibling; } - function callCallback(callback, context) { - if (typeof callback !== "function") { - throw new Error( - "Invalid argument passed as callback. Expected a function. Instead " + - ("received: " + callback) - ); + return null; + } + + function mapRemainingChildren(currentFirstChild) { + // Add the remaining children to a temporary map so that we can find them by + // keys quickly. Implicit (null) keys get added to this set with their index + // instead. + var existingChildren = new Map(); + var existingChild = currentFirstChild; + + while (existingChild !== null) { + if (existingChild.key !== null) { + existingChildren.set(existingChild.key, existingChild); + } else { + existingChildren.set(existingChild.index, existingChild); } - callback.call(context); + existingChild = existingChild.sibling; } - function resetHasForceUpdateBeforeProcessing() { - hasForceUpdate = false; - } - function checkHasForceUpdateAfterProcessing() { - return hasForceUpdate; - } - function deferHiddenCallbacks(updateQueue) { - // When an update finishes on a hidden component, its callback should not - // be fired until/unless the component is made visible again. Stash the - // callback on the shared queue object so it can be fired later. - var newHiddenCallbacks = updateQueue.callbacks; + return existingChildren; + } - if (newHiddenCallbacks !== null) { - var existingHiddenCallbacks = updateQueue.shared.hiddenCallbacks; + function useFiber(fiber, pendingProps) { + // We currently set sibling to null and index to 0 here because it is easy + // to forget to do before returning it. E.g. for the single child case. + var clone = createWorkInProgress(fiber, pendingProps); + clone.index = 0; + clone.sibling = null; + return clone; + } - if (existingHiddenCallbacks === null) { - updateQueue.shared.hiddenCallbacks = newHiddenCallbacks; - } else { - updateQueue.shared.hiddenCallbacks = - existingHiddenCallbacks.concat(newHiddenCallbacks); - } - } + function placeChild(newFiber, lastPlacedIndex, newIndex) { + newFiber.index = newIndex; + + if (!shouldTrackSideEffects) { + // During hydration, the useId algorithm needs to know which fibers are + // part of a list of children (arrays, iterators). + newFiber.flags |= Forked; + return lastPlacedIndex; } - function commitHiddenCallbacks(updateQueue, context) { - // This component is switching from hidden -> visible. Commit any callbacks - // that were previously deferred. - var hiddenCallbacks = updateQueue.shared.hiddenCallbacks; - if (hiddenCallbacks !== null) { - updateQueue.shared.hiddenCallbacks = null; + var current = newFiber.alternate; - for (var i = 0; i < hiddenCallbacks.length; i++) { - var callback = hiddenCallbacks[i]; - callCallback(callback, context); - } + if (current !== null) { + var oldIndex = current.index; + + if (oldIndex < lastPlacedIndex) { + // This is a move. + newFiber.flags |= Placement | PlacementDEV; + return lastPlacedIndex; + } else { + // This item can stay in place. + return oldIndex; } + } else { + // This is an insertion. + newFiber.flags |= Placement | PlacementDEV; + return lastPlacedIndex; } - function commitCallbacks(updateQueue, context) { - var callbacks = updateQueue.callbacks; + } - if (callbacks !== null) { - updateQueue.callbacks = null; - - for (var i = 0; i < callbacks.length; i++) { - var callback = callbacks[i]; - callCallback(callback, context); - } - } + function placeSingleChild(newFiber) { + // This is simpler for the single child case. We only need to do a + // placement for inserting new children. + if (shouldTrackSideEffects && newFiber.alternate === null) { + newFiber.flags |= Placement | PlacementDEV; } - // $FlowFixMe[method-unbinding] - var hasOwnProperty = Object.prototype.hasOwnProperty; + return newFiber; + } - /** - * Performs equality by iterating through keys on an object and returning false - * when any key has values which are not strictly equal between the arguments. - * Returns true when the values of all keys are strictly equal. - */ + function updateTextNode(returnFiber, current, textContent, lanes, debugInfo) { + if (current === null || current.tag !== HostText) { + // Insert + var created = createFiberFromText(textContent, returnFiber.mode, lanes); + created.return = returnFiber; - function shallowEqual(objA, objB) { - if (objectIs(objA, objB)) { - return true; + { + created._debugInfo = debugInfo; } - if ( - typeof objA !== "object" || - objA === null || - typeof objB !== "object" || - objB === null - ) { - return false; + return created; + } else { + // Update + var existing = useFiber(current, textContent); + existing.return = returnFiber; + + { + existing._debugInfo = debugInfo; } - var keysA = Object.keys(objA); - var keysB = Object.keys(objB); + return existing; + } + } + + function updateElement(returnFiber, current, element, lanes, debugInfo) { + var elementType = element.type; - if (keysA.length !== keysB.length) { - return false; - } // Test for A's keys different from B. + if (elementType === REACT_FRAGMENT_TYPE) { + return updateFragment(returnFiber, current, element.props.children, lanes, element.key, debugInfo); + } - for (var i = 0; i < keysA.length; i++) { - var currentKey = keysA[i]; + if (current !== null) { + if (current.elementType === elementType || ( // Keep this check inline so it only runs on the false path: + isCompatibleFamilyForHotReloading(current, element) ) || // Lazy types should reconcile their resolved type. + // We need to do this after the Hot Reloading check above, + // because hot reloading has different semantics than prod because + // it doesn't resuspend. So we can't let the call below suspend. + typeof elementType === 'object' && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === current.type) { + // Move based on index + var existing = useFiber(current, element.props); + coerceRef(returnFiber, current, existing, element); + existing.return = returnFiber; - if ( - !hasOwnProperty.call(objB, currentKey) || // $FlowFixMe[incompatible-use] lost refinement of `objB` - !objectIs(objA[currentKey], objB[currentKey]) - ) { - return false; + { + existing._debugOwner = element._owner; + existing._debugInfo = debugInfo; } + + return existing; } + } // Insert - return true; - } - var current = null; - var isRendering = false; - function getCurrentFiberOwnerNameInDevOrNull() { - { - if (current === null) { - return null; - } + var created = createFiberFromElement(element, returnFiber.mode, lanes); + coerceRef(returnFiber, current, created, element); + created.return = returnFiber; - var owner = current._debugOwner; + { + created._debugInfo = debugInfo; + } - if (owner != null) { - return getComponentNameFromOwner(owner); - } - } + return created; + } - return null; - } + function updatePortal(returnFiber, current, portal, lanes, debugInfo) { + if (current === null || current.tag !== HostPortal || current.stateNode.containerInfo !== portal.containerInfo || current.stateNode.implementation !== portal.implementation) { + // Insert + var created = createFiberFromPortal(portal, returnFiber.mode, lanes); + created.return = returnFiber; - function getCurrentFiberStackInDev() { { - if (current === null) { - return ""; - } // Safe because if current fiber exists, we are reconciling, - // and it is guaranteed to be the work-in-progress version. - - return getStackByFiberInDevAndProd(current); + created._debugInfo = debugInfo; } - } - function resetCurrentFiber() { + return created; + } else { + // Update + var existing = useFiber(current, portal.children || []); + existing.return = returnFiber; + { - ReactSharedInternals.getCurrentStack = null; - current = null; - isRendering = false; + existing._debugInfo = debugInfo; } + + return existing; } - function setCurrentFiber(fiber) { + } + + function updateFragment(returnFiber, current, fragment, lanes, key, debugInfo) { + if (current === null || current.tag !== Fragment) { + // Insert + var created = createFiberFromFragment(fragment, returnFiber.mode, lanes, key); + created.return = returnFiber; + { - ReactSharedInternals.getCurrentStack = - fiber === null ? null : getCurrentFiberStackInDev; - current = fiber; - isRendering = false; + created._debugInfo = debugInfo; } - } - function getCurrentFiber() { + + return created; + } else { + // Update + var existing = useFiber(current, fragment); + existing.return = returnFiber; + { - return current; + existing._debugInfo = debugInfo; } + + return existing; } - function setIsRendering(rendering) { + } + + function createChild(returnFiber, newChild, lanes, debugInfo) { + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys. If the previous node is implicitly keyed + // we can continue to replace it without aborting even if it is not a text + // node. + var created = createFiberFromText( // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, returnFiber.mode, lanes); + created.return = returnFiber; + { - isRendering = rendering; + created._debugInfo = debugInfo; } - } - var ReactStrictModeWarnings = { - recordUnsafeLifecycleWarnings: function (fiber, instance) {}, - flushPendingUnsafeLifecycleWarnings: function () {}, - recordLegacyContextWarning: function (fiber, instance) {}, - flushLegacyContextWarning: function () {}, - discardPendingWarnings: function () {} - }; + return created; + } - { - var findStrictRoot = function (fiber) { - var maybeStrictRoot = null; - var node = fiber; + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + var _created = createFiberFromElement(newChild, returnFiber.mode, lanes); - while (node !== null) { - if (node.mode & StrictLegacyMode) { - maybeStrictRoot = node; - } + coerceRef(returnFiber, null, _created, newChild); + _created.return = returnFiber; - node = node.return; - } + { + _created._debugInfo = mergeDebugInfo(debugInfo, newChild._debugInfo); + } - return maybeStrictRoot; - }; + return _created; + } - var setToSortedString = function (set) { - var array = []; - set.forEach(function (value) { - array.push(value); - }); - return array.sort().join(", "); - }; + case REACT_PORTAL_TYPE: + { + var _created2 = createFiberFromPortal(newChild, returnFiber.mode, lanes); - var pendingComponentWillMountWarnings = []; - var pendingUNSAFE_ComponentWillMountWarnings = []; - var pendingComponentWillReceivePropsWarnings = []; - var pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - var pendingComponentWillUpdateWarnings = []; - var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about. - - var didWarnAboutUnsafeLifecycles = new Set(); - - ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function ( - fiber, - instance - ) { - // Dedupe strategy: Warn once per component. - if (didWarnAboutUnsafeLifecycles.has(fiber.type)) { - return; - } + _created2.return = returnFiber; - if ( - typeof instance.componentWillMount === "function" && // Don't warn about react-lifecycles-compat polyfilled components. - instance.componentWillMount.__suppressDeprecationWarning !== true - ) { - pendingComponentWillMountWarnings.push(fiber); - } + { + _created2._debugInfo = debugInfo; + } - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillMount === "function" - ) { - pendingUNSAFE_ComponentWillMountWarnings.push(fiber); - } + return _created2; + } - if ( - typeof instance.componentWillReceiveProps === "function" && - instance.componentWillReceiveProps.__suppressDeprecationWarning !== - true - ) { - pendingComponentWillReceivePropsWarnings.push(fiber); - } + case REACT_LAZY_TYPE: + { + var payload = newChild._payload; + var init = newChild._init; + return createChild(returnFiber, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo) // call merge after init + ); + } + } - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillReceiveProps === "function" - ) { - pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber); - } + if (isArray(newChild) || getIteratorFn(newChild)) { + var _created3 = createFiberFromFragment(newChild, returnFiber.mode, lanes, null); - if ( - typeof instance.componentWillUpdate === "function" && - instance.componentWillUpdate.__suppressDeprecationWarning !== true - ) { - pendingComponentWillUpdateWarnings.push(fiber); - } + _created3.return = returnFiber; - if ( - fiber.mode & StrictLegacyMode && - typeof instance.UNSAFE_componentWillUpdate === "function" - ) { - pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber); + { + _created3._debugInfo = mergeDebugInfo(debugInfo, newChild._debugInfo); } - }; - ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = - function () { - // We do an initial pass to gather component names - var componentWillMountUniqueNames = new Set(); - - if (pendingComponentWillMountWarnings.length > 0) { - pendingComponentWillMountWarnings.forEach(function (fiber) { - componentWillMountUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillMountWarnings = []; - } - - var UNSAFE_componentWillMountUniqueNames = new Set(); + return _created3; + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) { - pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) { - UNSAFE_componentWillMountUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingUNSAFE_ComponentWillMountWarnings = []; - } - var componentWillReceivePropsUniqueNames = new Set(); + if (typeof newChild.then === 'function') { + var thenable = newChild; + return createChild(returnFiber, unwrapThenable(thenable), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } - if (pendingComponentWillReceivePropsWarnings.length > 0) { - pendingComponentWillReceivePropsWarnings.forEach(function (fiber) { - componentWillReceivePropsUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillReceivePropsWarnings = []; - } + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return createChild(returnFiber, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - var UNSAFE_componentWillReceivePropsUniqueNames = new Set(); + throwOnInvalidObjectType(returnFiber, newChild); + } - if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) { - pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach( - function (fiber) { - UNSAFE_componentWillReceivePropsUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - } - ); - pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - } + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - var componentWillUpdateUniqueNames = new Set(); + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } - if (pendingComponentWillUpdateWarnings.length > 0) { - pendingComponentWillUpdateWarnings.forEach(function (fiber) { - componentWillUpdateUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingComponentWillUpdateWarnings = []; - } + return null; + } - var UNSAFE_componentWillUpdateUniqueNames = new Set(); - - if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) { - pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) { - UNSAFE_componentWillUpdateUniqueNames.add( - getComponentNameFromFiber(fiber) || "Component" - ); - didWarnAboutUnsafeLifecycles.add(fiber.type); - }); - pendingUNSAFE_ComponentWillUpdateWarnings = []; - } // Finally, we flush all the warnings - // UNSAFE_ ones before the deprecated ones, since they'll be 'louder' - - if (UNSAFE_componentWillMountUniqueNames.size > 0) { - var sortedNames = setToSortedString( - UNSAFE_componentWillMountUniqueNames - ); + function updateSlot(returnFiber, oldFiber, newChild, lanes, debugInfo) { + // Update the fiber if the keys match, otherwise return null. + var key = oldFiber !== null ? oldFiber.key : null; - error( - "Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + - "\nPlease update the following components: %s", - sortedNames - ); - } + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys. If the previous node is implicitly keyed + // we can continue to replace it without aborting even if it is not a text + // node. + if (key !== null) { + return null; + } - if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) { - var _sortedNames = setToSortedString( - UNSAFE_componentWillReceivePropsUniqueNames - ); + return updateTextNode(returnFiber, oldFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes, debugInfo); + } - error( - "Using UNSAFE_componentWillReceiveProps in strict mode is not recommended " + - "and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* If you're updating state whenever props change, " + - "refactor your code to use memoization techniques or move it to " + - "static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n" + - "\nPlease update the following components: %s", - _sortedNames - ); + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + if (newChild.key === key) { + return updateElement(returnFiber, oldFiber, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } else { + return null; + } } - if (UNSAFE_componentWillUpdateUniqueNames.size > 0) { - var _sortedNames2 = setToSortedString( - UNSAFE_componentWillUpdateUniqueNames - ); - - error( - "Using UNSAFE_componentWillUpdate in strict mode is not recommended " + - "and may indicate bugs in your code. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "\nPlease update the following components: %s", - _sortedNames2 - ); + case REACT_PORTAL_TYPE: + { + if (newChild.key === key) { + return updatePortal(returnFiber, oldFiber, newChild, lanes, debugInfo); + } else { + return null; + } } - if (componentWillMountUniqueNames.size > 0) { - var _sortedNames3 = setToSortedString( - componentWillMountUniqueNames - ); - - warn( - "componentWillMount has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move code with side effects to componentDidMount, and set initial state in the constructor.\n" + - "* Rename componentWillMount to UNSAFE_componentWillMount to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames3 - ); + case REACT_LAZY_TYPE: + { + var payload = newChild._payload; + var init = newChild._init; + return updateSlot(returnFiber, oldFiber, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } + } - if (componentWillReceivePropsUniqueNames.size > 0) { - var _sortedNames4 = setToSortedString( - componentWillReceivePropsUniqueNames - ); + if (isArray(newChild) || getIteratorFn(newChild)) { + if (key !== null) { + return null; + } - warn( - "componentWillReceiveProps has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* If you're updating state whenever props change, refactor your " + - "code to use memoization techniques or move it to " + - "static getDerivedStateFromProps. Learn more at: https://react.dev/link/derived-state\n" + - "* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames4 - ); - } + return updateFragment(returnFiber, oldFiber, newChild, lanes, null, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - if (componentWillUpdateUniqueNames.size > 0) { - var _sortedNames5 = setToSortedString( - componentWillUpdateUniqueNames - ); - warn( - "componentWillUpdate has been renamed, and is not recommended for use. " + - "See https://react.dev/link/unsafe-component-lifecycles for details.\n\n" + - "* Move data fetching code or side effects to componentDidUpdate.\n" + - "* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress " + - "this warning in non-strict mode. In React 18.x, only the UNSAFE_ name will work. " + - "To rename all deprecated lifecycles to their new names, you can run " + - "`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n" + - "\nPlease update the following components: %s", - _sortedNames5 - ); - } - }; + if (typeof newChild.then === 'function') { + var thenable = newChild; + return updateSlot(returnFiber, oldFiber, unwrapThenable(thenable), lanes, debugInfo); + } - var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about. + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return updateSlot(returnFiber, oldFiber, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - var didWarnAboutLegacyContext = new Set(); + throwOnInvalidObjectType(returnFiber, newChild); + } - ReactStrictModeWarnings.recordLegacyContextWarning = function ( - fiber, - instance - ) { - var strictRoot = findStrictRoot(fiber); + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - if (strictRoot === null) { - error( - "Expected to find a StrictMode component in a strict mode tree. " + - "This error is likely caused by a bug in React. Please file an issue." - ); + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } - return; - } // Dedup strategy: Warn once per component. + return null; + } - if (didWarnAboutLegacyContext.has(fiber.type)) { - return; - } + function updateFromMap(existingChildren, returnFiber, newIdx, newChild, lanes, debugInfo) { + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + // Text nodes don't have keys, so we neither have to check the old nor + // new node for the key. If both are text nodes, they match. + var matchedFiber = existingChildren.get(newIdx) || null; + return updateTextNode(returnFiber, matchedFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes, debugInfo); + } - var warningsForRoot = pendingLegacyContextWarning.get(strictRoot); + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + { + var _matchedFiber = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null; - if ( - fiber.type.contextTypes != null || - fiber.type.childContextTypes != null || - (instance !== null && typeof instance.getChildContext === "function") - ) { - if (warningsForRoot === undefined) { - warningsForRoot = []; - pendingLegacyContextWarning.set(strictRoot, warningsForRoot); + return updateElement(returnFiber, _matchedFiber, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - warningsForRoot.push(fiber); - } - }; + case REACT_PORTAL_TYPE: + { + var _matchedFiber2 = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null; - ReactStrictModeWarnings.flushLegacyContextWarning = function () { - pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) { - if (fiberArray.length === 0) { - return; + return updatePortal(returnFiber, _matchedFiber2, newChild, lanes, debugInfo); } - var firstFiber = fiberArray[0]; - var uniqueNames = new Set(); - fiberArray.forEach(function (fiber) { - uniqueNames.add(getComponentNameFromFiber(fiber) || "Component"); - didWarnAboutLegacyContext.add(fiber.type); - }); - var sortedNames = setToSortedString(uniqueNames); + case REACT_LAZY_TYPE: + var payload = newChild._payload; + var init = newChild._init; + return updateFromMap(existingChildren, returnFiber, newIdx, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } - try { - setCurrentFiber(firstFiber); - - error( - "Legacy context API has been detected within a strict-mode tree." + - "\n\nThe old API will be supported in all 16.x releases, but applications " + - "using it should migrate to the new version." + - "\n\nPlease update the following components: %s" + - "\n\nLearn more about this warning here: https://react.dev/link/legacy-context", - sortedNames - ); - } finally { - resetCurrentFiber(); - } - }); - }; + if (isArray(newChild) || getIteratorFn(newChild)) { + var _matchedFiber3 = existingChildren.get(newIdx) || null; - ReactStrictModeWarnings.discardPendingWarnings = function () { - pendingComponentWillMountWarnings = []; - pendingUNSAFE_ComponentWillMountWarnings = []; - pendingComponentWillReceivePropsWarnings = []; - pendingUNSAFE_ComponentWillReceivePropsWarnings = []; - pendingComponentWillUpdateWarnings = []; - pendingUNSAFE_ComponentWillUpdateWarnings = []; - pendingLegacyContextWarning = new Map(); - }; - } + return updateFragment(returnFiber, _matchedFiber3, newChild, lanes, null, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usable node types + // + // Unwrap the inner value and recursively call this function again. - function getThenablesFromState(state) { - { - var devState = state; - return devState.thenables; - } - } // An error that is thrown (e.g. by `use`) to trigger Suspense. If we - // detect this is caught by userspace, we'll log a warning in development. - - var SuspenseException = new Error( - "Suspense Exception: This is not a real error! It's an implementation " + - "detail of `use` to interrupt the current render. You must either " + - "rethrow it immediately, or move the `use` call outside of the " + - "`try/catch` block. Capturing without rethrowing will lead to " + - "unexpected behavior.\n\n" + - "To handle async errors, wrap your component in an error boundary, or " + - "call the promise's `.catch` method and pass the result to `use`" - ); - var SuspenseyCommitException = new Error( - "Suspense Exception: This is not a real error, and should not leak into " + - "userspace. If you're seeing this, it's likely a bug in React." - ); // This is a noop thenable that we use to trigger a fallback in throwException. - // TODO: It would be better to refactor throwException into multiple functions - // so we can trigger a fallback directly without having to check the type. But - // for now this will do. - - var noopSuspenseyCommitThenable = { - then: function () { - { - error( - "Internal React error: A listener was unexpectedly attached to a " + - '"noop" thenable. This is a bug in React. Please file an issue.' - ); - } + + if (typeof newChild.then === 'function') { + var thenable = newChild; + return updateFromMap(existingChildren, returnFiber, newIdx, unwrapThenable(thenable), lanes, debugInfo); } - }; - function createThenableState() { - // The ThenableState is created the first time a component suspends. If it - // suspends again, we'll reuse the same state. - { - return { - didWarnAboutUncachedPromise: false, - thenables: [] - }; + + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return updateFromMap(existingChildren, returnFiber, newIdx, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); } - } - function isThenableResolved(thenable) { - var status = thenable.status; - return status === "fulfilled" || status === "rejected"; - } - function noop() {} + throwOnInvalidObjectType(returnFiber, newChild); + } - function trackUsedThenable(thenableState, thenable, index) { - if (ReactSharedInternals.actQueue !== null) { - ReactSharedInternals.didUsePromise = true; + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); } - var trackedThenables = getThenablesFromState(thenableState); - var previous = trackedThenables[index]; + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } - if (previous === undefined) { - trackedThenables.push(thenable); - } else { - if (previous !== thenable) { - // Reuse the previous thenable, and drop the new one. We can assume - // they represent the same value, because components are idempotent. - { - var thenableStateDev = thenableState; + return null; + } + /** + * Warns if there is a duplicate or missing key + */ - if (!thenableStateDev.didWarnAboutUncachedPromise) { - // We should only warn the first time an uncached thenable is - // discovered per component, because if there are multiple, the - // subsequent ones are likely derived from the first. - // - // We track this on the thenableState instead of deduping using the - // component name like we usually do, because in the case of a - // promise-as-React-node, the owner component is likely different from - // the parent that's currently being reconciled. We'd have to track - // the owner using state, which we're trying to move away from. Though - // since this is dev-only, maybe that'd be OK. - // - // However, another benefit of doing it this way is we might - // eventually have a thenableState per memo/Forget boundary instead - // of per component, so this would allow us to have more - // granular warnings. - thenableStateDev.didWarnAboutUncachedPromise = true; // TODO: This warning should link to a corresponding docs page. - - error( - "A component was suspended by an uncached promise. Creating " + - "promises inside a Client Component or hook is not yet " + - "supported, except via a Suspense-compatible library or framework." - ); - } - } // Avoid an unhandled rejection errors for the Promises that we'll - // intentionally ignore. - thenable.then(noop, noop); - thenable = previous; - } - } // We use an expando to track the status and result of a thenable so that we - // can synchronously unwrap the value. Think of this as an extension of the - // Promise API, or a custom interface that is a superset of Thenable. - // - // If the thenable doesn't have a status, set it to "pending" and attach - // a listener that will update its status and result when it resolves. + function warnOnInvalidKey(child, knownKeys, returnFiber) { + { + if (typeof child !== 'object' || child === null) { + return knownKeys; + } - switch (thenable.status) { - case "fulfilled": { - var fulfilledValue = thenable.value; - return fulfilledValue; - } + switch (child.$$typeof) { + case REACT_ELEMENT_TYPE: + case REACT_PORTAL_TYPE: + warnForMissingKey(child, returnFiber); + var key = child.key; - case "rejected": { - var rejectedError = thenable.reason; - checkIfUseWrappedInAsyncCatch(rejectedError); - throw rejectedError; - } + if (typeof key !== 'string') { + break; + } - default: { - if (typeof thenable.status === "string") { - // Only instrument the thenable if the status if not defined. If - // it's defined, but an unknown value, assume it's been instrumented by - // some custom userspace implementation. We treat it as "pending". - // Attach a dummy listener, to ensure that any lazy initialization can - // happen. Flight lazily parses JSON when the value is actually awaited. - thenable.then(noop, noop); - } else { - // This is an uncached thenable that we haven't seen before. - // Detect infinite ping loops caused by uncached promises. - var root = getWorkInProgressRoot(); - - if (root !== null && root.shellSuspendCounter > 100) { - // This root has suspended repeatedly in the shell without making any - // progress (i.e. committing something). This is highly suggestive of - // an infinite ping loop, often caused by an accidental Async Client - // Component. - // - // During a transition, we can suspend the work loop until the promise - // to resolve, but this is a sync render, so that's not an option. We - // also can't show a fallback, because none was provided. So our last - // resort is to throw an error. - // - // TODO: Remove this error in a future release. Other ways of handling - // this case include forcing a concurrent render, or putting the whole - // root into offscreen mode. - throw new Error( - "async/await is not yet supported in Client Components, only " + - "Server Components. This error is often caused by accidentally " + - "adding `'use client'` to a module that was originally written " + - "for the server." - ); - } + if (knownKeys === null) { + knownKeys = new Set(); + knownKeys.add(key); + break; + } - var pendingThenable = thenable; - pendingThenable.status = "pending"; - pendingThenable.then( - function (fulfilledValue) { - if (thenable.status === "pending") { - var fulfilledThenable = thenable; - fulfilledThenable.status = "fulfilled"; - fulfilledThenable.value = fulfilledValue; - } - }, - function (error) { - if (thenable.status === "pending") { - var rejectedThenable = thenable; - rejectedThenable.status = "rejected"; - rejectedThenable.reason = error; - } - } - ); - } // Check one more time in case the thenable resolved synchronously. + if (!knownKeys.has(key)) { + knownKeys.add(key); + break; + } - switch (thenable.status) { - case "fulfilled": { - var fulfilledThenable = thenable; - return fulfilledThenable.value; - } + error('Encountered two children with the same key, `%s`. ' + 'Keys should be unique so that components maintain their identity ' + 'across updates. Non-unique keys may cause children to be ' + 'duplicated and/or omitted — the behavior is unsupported and ' + 'could change in a future version.', key); - case "rejected": { - var rejectedThenable = thenable; - var _rejectedError = rejectedThenable.reason; - checkIfUseWrappedInAsyncCatch(_rejectedError); - throw _rejectedError; - } - } // Suspend. - // - // Throwing here is an implementation detail that allows us to unwind the - // call stack. But we shouldn't allow it to leak into userspace. Throw an - // opaque placeholder value instead of the actual thenable. If it doesn't - // get captured by the work loop, log a warning, because that means - // something in userspace must have caught it. + break; - suspendedThenable = thenable; + case REACT_LAZY_TYPE: + var payload = child._payload; + var init = child._init; + warnOnInvalidKey(init(payload), knownKeys, returnFiber); + break; + } + } - { - needsToResetSuspendedThenableDEV = true; - } + return knownKeys; + } + + function reconcileChildrenArray(returnFiber, currentFirstChild, newChildren, lanes, debugInfo) { + // This algorithm can't optimize by searching from both ends since we + // don't have backpointers on fibers. I'm trying to see how far we can get + // with that model. If it ends up not being worth the tradeoffs, we can + // add it later. + // Even with a two ended optimization, we'd want to optimize for the case + // where there are few changes and brute force the comparison instead of + // going for the Map. It'd like to explore hitting that path first in + // forward-only mode and only go for the Map once we notice that we need + // lots of look ahead. This doesn't handle reversal as well as two ended + // search but that's unusual. Besides, for the two ended optimization to + // work on Iterables, we'd need to copy the whole set. + // In this first iteration, we'll just live with hitting the bad case + // (adding everything to a Map) in for every insert/move. + // If you change this code, also update reconcileChildrenIterator() which + // uses the same algorithm. + { + // First, validate keys. + var knownKeys = null; - throw SuspenseException; - } + for (var i = 0; i < newChildren.length; i++) { + var child = newChildren[i]; + knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); } } - // passed to the rest of the Suspense implementation — which, for historical - // reasons, expects to receive a thenable. - var suspendedThenable = null; - var needsToResetSuspendedThenableDEV = false; - function getSuspendedThenable() { - // This is called right after `use` suspends by throwing an exception. `use` - // throws an opaque value instead of the thenable itself so that it can't be - // caught in userspace. Then the work loop accesses the actual thenable using - // this function. - if (suspendedThenable === null) { - throw new Error( - "Expected a suspended thenable. This is a bug in React. Please file " + - "an issue." - ); + var resultingFirstChild = null; + var previousNewFiber = null; + var oldFiber = currentFirstChild; + var lastPlacedIndex = 0; + var newIdx = 0; + var nextOldFiber = null; + + for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) { + if (oldFiber.index > newIdx) { + nextOldFiber = oldFiber; + oldFiber = null; + } else { + nextOldFiber = oldFiber.sibling; } - var thenable = suspendedThenable; - suspendedThenable = null; + var newFiber = updateSlot(returnFiber, oldFiber, newChildren[newIdx], lanes, debugInfo); - { - needsToResetSuspendedThenableDEV = false; + if (newFiber === null) { + // TODO: This breaks on empty slots like null children. That's + // unfortunate because it triggers the slow path all the time. We need + // a better way to communicate whether this was a miss or null, + // boolean, undefined, etc. + if (oldFiber === null) { + oldFiber = nextOldFiber; + } + + break; } - return thenable; - } - function checkIfUseWrappedInTryCatch() { - { - // This was set right before SuspenseException was thrown, and it should - // have been cleared when the exception was handled. If it wasn't, - // it must have been caught by userspace. - if (needsToResetSuspendedThenableDEV) { - needsToResetSuspendedThenableDEV = false; - return true; + if (shouldTrackSideEffects) { + if (oldFiber && newFiber.alternate === null) { + // We matched the slot, but we didn't reuse the existing fiber, so we + // need to delete the existing child. + deleteChild(returnFiber, oldFiber); } } - return false; - } - function checkIfUseWrappedInAsyncCatch(rejectedReason) { - // This check runs in prod, too, because it prevents a more confusing - // downstream error, where SuspenseException is caught by a promise and - // thrown asynchronously. - // TODO: Another way to prevent SuspenseException from leaking into an async - // execution context is to check the dispatcher every time `use` is called, - // or some equivalent. That might be preferable for other reasons, too, since - // it matches how we prevent similar mistakes for other hooks. - if (rejectedReason === SuspenseException) { - throw new Error( - "Hooks are not supported inside an async component. This " + - "error is often caused by accidentally adding `'use client'` " + - "to a module that was originally written for the server." - ); - } - } - - var thenableState$1 = null; - var thenableIndexCounter$1 = 0; - - function mergeDebugInfo(outer, inner) { - if (inner == null) { - return outer; - } else if (outer === null) { - return inner; + lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = newFiber; } else { - // If we have two debugInfo, we need to create a new one. This makes the array no longer - // live so we'll miss any future updates if we received more so ideally we should always - // do this after both have fully resolved/unsuspended. - return outer.concat(inner); + // TODO: Defer siblings if we're not at the right index for this slot. + // I.e. if we had null values before, then we want to defer this + // for each null value. However, we also don't want to call updateSlot + // with the previous one. + previousNewFiber.sibling = newFiber; } + + previousNewFiber = newFiber; + oldFiber = nextOldFiber; } - var didWarnAboutMaps; - var didWarnAboutGenerators; - var ownerHasKeyUseWarning; - var ownerHasFunctionTypeWarning; - var ownerHasSymbolTypeWarning; + if (newIdx === newChildren.length) { + // We've reached the end of the new children. We can delete the rest. + deleteRemainingChildren(returnFiber, oldFiber); - var warnForMissingKey = function (child, returnFiber) {}; + return resultingFirstChild; + } - { - didWarnAboutMaps = false; - didWarnAboutGenerators = false; - /** - * Warn if there's no key explicitly set on dynamic arrays of children or - * object keys are not valid. This allows us to keep track of children between - * updates. - */ - - ownerHasKeyUseWarning = {}; - ownerHasFunctionTypeWarning = {}; - ownerHasSymbolTypeWarning = {}; - - warnForMissingKey = function (child, returnFiber) { - if (child === null || typeof child !== "object") { - return; + if (oldFiber === null) { + // If we don't have any more existing children we can choose a fast path + // since the rest will all be insertions. + for (; newIdx < newChildren.length; newIdx++) { + var _newFiber = createChild(returnFiber, newChildren[newIdx], lanes, debugInfo); + + if (_newFiber === null) { + continue; } - if (!child._store || child._store.validated || child.key != null) { - return; + lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx); + + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = _newFiber; + } else { + previousNewFiber.sibling = _newFiber; } - if (typeof child._store !== "object") { - throw new Error( - "React Component in warnForMissingKey should have a _store. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } // $FlowFixMe[cannot-write] unable to narrow type from mixed to writable object + previousNewFiber = _newFiber; + } - child._store.validated = true; - var componentName = - getComponentNameFromFiber(returnFiber) || "Component"; + return resultingFirstChild; + } // Add all children to a key map for quick lookups. - if (ownerHasKeyUseWarning[componentName]) { - return; - } - ownerHasKeyUseWarning[componentName] = true; + var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - error( - "Each child in a list should have a unique " + - '"key" prop. See https://react.dev/link/warning-keys for ' + - "more information." - ); - }; - } + for (; newIdx < newChildren.length; newIdx++) { + var _newFiber2 = updateFromMap(existingChildren, returnFiber, newIdx, newChildren[newIdx], lanes, debugInfo); + + if (_newFiber2 !== null) { + if (shouldTrackSideEffects) { + if (_newFiber2.alternate !== null) { + // The new fiber is a work in progress, but if there exists a + // current, that means that we reused the fiber. We need to delete + // it from the child list so that we don't add it to the deletion + // list. + existingChildren.delete(_newFiber2.key === null ? newIdx : _newFiber2.key); + } + } + + lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx); - function unwrapThenable(thenable) { - var index = thenableIndexCounter$1; - thenableIndexCounter$1 += 1; + if (previousNewFiber === null) { + resultingFirstChild = _newFiber2; + } else { + previousNewFiber.sibling = _newFiber2; + } - if (thenableState$1 === null) { - thenableState$1 = createThenableState(); + previousNewFiber = _newFiber2; } + } - return trackUsedThenable(thenableState$1, thenable, index); + if (shouldTrackSideEffects) { + // Any existing children that weren't consumed above were deleted. We need + // to add them to the deletion list. + existingChildren.forEach(function (child) { + return deleteChild(returnFiber, child); + }); } - function coerceRef(returnFiber, current, workInProgress, element) { - var ref; + return resultingFirstChild; + } - { - // Old behavior. - ref = element.ref; - } // TODO: If enableRefAsProp is on, we shouldn't use the `ref` field. We - // should always read the ref from the prop. + function reconcileChildrenIterator(returnFiber, currentFirstChild, newChildrenIterable, lanes, debugInfo) { + // This is the same implementation as reconcileChildrenArray(), + // but using the iterator instead. + var iteratorFn = getIteratorFn(newChildrenIterable); - workInProgress.ref = ref; + if (typeof iteratorFn !== 'function') { + throw new Error('An object is not an iterable. This error is likely caused by a bug in ' + 'React. Please file an issue.'); } - function throwOnInvalidObjectType(returnFiber, newChild) { - // $FlowFixMe[method-unbinding] - var childString = Object.prototype.toString.call(newChild); - throw new Error( - "Objects are not valid as a React child (found: " + - (childString === "[object Object]" - ? "object with keys {" + Object.keys(newChild).join(", ") + "}" - : childString) + - "). " + - "If you meant to render a collection of children, use an array " + - "instead." - ); - } - - function warnOnFunctionType(returnFiber, invalidChild) { - { - var parentName = getComponentNameFromFiber(returnFiber) || "Component"; - - if (ownerHasFunctionTypeWarning[parentName]) { - return; + { + // We don't support rendering Generators because it's a mutation. + // See https://github.com/facebook/react/issues/12995 + if (typeof Symbol === 'function' && // $FlowFixMe[prop-missing] Flow doesn't know about toStringTag + newChildrenIterable[Symbol.toStringTag] === 'Generator') { + if (!didWarnAboutGenerators) { + error('Using Generators as children is unsupported and will likely yield ' + 'unexpected results because enumerating a generator mutates it. ' + 'You may convert it to an array with `Array.from()` or the ' + '`[...spread]` operator before rendering. Keep in mind ' + 'you might need to polyfill these features for older browsers.'); } - ownerHasFunctionTypeWarning[parentName] = true; - var name = invalidChild.displayName || invalidChild.name || "Component"; + didWarnAboutGenerators = true; + } // Warn about using Maps as children - if (returnFiber.tag === HostRoot) { - error( - "Functions are not valid as a React child. This may happen if " + - "you return %s instead of <%s /> from render. " + - "Or maybe you meant to call this function rather than return it.\n" + - " root.render(%s)", - name, - name, - name - ); - } else { - error( - "Functions are not valid as a React child. This may happen if " + - "you return %s instead of <%s /> from render. " + - "Or maybe you meant to call this function rather than return it.\n" + - " <%s>{%s}", - name, - name, - parentName, - name, - parentName - ); + + if (newChildrenIterable.entries === iteratorFn) { + if (!didWarnAboutMaps) { + error('Using Maps as children is not supported. ' + 'Use an array of keyed ReactElements instead.'); } - } - } - function warnOnSymbolType(returnFiber, invalidChild) { - { - var parentName = getComponentNameFromFiber(returnFiber) || "Component"; + didWarnAboutMaps = true; + } // First, validate keys. + // We'll get a different iterator later for the main pass. - if (ownerHasSymbolTypeWarning[parentName]) { - return; - } - ownerHasSymbolTypeWarning[parentName] = true; // eslint-disable-next-line react-internal/safe-string-coercion + var _newChildren = iteratorFn.call(newChildrenIterable); - var name = String(invalidChild); + if (_newChildren) { + var knownKeys = null; - if (returnFiber.tag === HostRoot) { - error( - "Symbols are not valid as a React child.\n" + " root.render(%s)", - name - ); - } else { - error( - "Symbols are not valid as a React child.\n" + " <%s>%s", - parentName, - name, - parentName - ); + var _step = _newChildren.next(); + + for (; !_step.done; _step = _newChildren.next()) { + var child = _step.value; + knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); } } } - function resolveLazy(lazyType) { - var payload = lazyType._payload; - var init = lazyType._init; - return init(payload); - } // This wrapper function exists because I expect to clone the code in each path - // to be able to optimize each path individually by branching early. This needs - // a compiler or we can do it manually. Helpers that don't need this branching - // live outside of this function. + var newChildren = iteratorFn.call(newChildrenIterable); - function createChildReconciler(shouldTrackSideEffects) { - function deleteChild(returnFiber, childToDelete) { - if (!shouldTrackSideEffects) { - // Noop. - return; - } + if (newChildren == null) { + throw new Error('An iterable object provided no iterator.'); + } - var deletions = returnFiber.deletions; + var resultingFirstChild = null; + var previousNewFiber = null; + var oldFiber = currentFirstChild; + var lastPlacedIndex = 0; + var newIdx = 0; + var nextOldFiber = null; + var step = newChildren.next(); - if (deletions === null) { - returnFiber.deletions = [childToDelete]; - returnFiber.flags |= ChildDeletion; - } else { - deletions.push(childToDelete); - } + for (; oldFiber !== null && !step.done; newIdx++, step = newChildren.next()) { + if (oldFiber.index > newIdx) { + nextOldFiber = oldFiber; + oldFiber = null; + } else { + nextOldFiber = oldFiber.sibling; } - function deleteRemainingChildren(returnFiber, currentFirstChild) { - if (!shouldTrackSideEffects) { - // Noop. - return null; - } // TODO: For the shouldClone case, this could be micro-optimized a bit by - // assuming that after the first child we've already added everything. - - var childToDelete = currentFirstChild; + var newFiber = updateSlot(returnFiber, oldFiber, step.value, lanes, debugInfo); - while (childToDelete !== null) { - deleteChild(returnFiber, childToDelete); - childToDelete = childToDelete.sibling; + if (newFiber === null) { + // TODO: This breaks on empty slots like null children. That's + // unfortunate because it triggers the slow path all the time. We need + // a better way to communicate whether this was a miss or null, + // boolean, undefined, etc. + if (oldFiber === null) { + oldFiber = nextOldFiber; } - return null; + break; } - function mapRemainingChildren(currentFirstChild) { - // Add the remaining children to a temporary map so that we can find them by - // keys quickly. Implicit (null) keys get added to this set with their index - // instead. - var existingChildren = new Map(); - var existingChild = currentFirstChild; - - while (existingChild !== null) { - if (existingChild.key !== null) { - existingChildren.set(existingChild.key, existingChild); - } else { - existingChildren.set(existingChild.index, existingChild); - } - - existingChild = existingChild.sibling; + if (shouldTrackSideEffects) { + if (oldFiber && newFiber.alternate === null) { + // We matched the slot, but we didn't reuse the existing fiber, so we + // need to delete the existing child. + deleteChild(returnFiber, oldFiber); } - - return existingChildren; } - function useFiber(fiber, pendingProps) { - // We currently set sibling to null and index to 0 here because it is easy - // to forget to do before returning it. E.g. for the single child case. - var clone = createWorkInProgress(fiber, pendingProps); - clone.index = 0; - clone.sibling = null; - return clone; + lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = newFiber; + } else { + // TODO: Defer siblings if we're not at the right index for this slot. + // I.e. if we had null values before, then we want to defer this + // for each null value. However, we also don't want to call updateSlot + // with the previous one. + previousNewFiber.sibling = newFiber; } - function placeChild(newFiber, lastPlacedIndex, newIndex) { - newFiber.index = newIndex; + previousNewFiber = newFiber; + oldFiber = nextOldFiber; + } - if (!shouldTrackSideEffects) { - // During hydration, the useId algorithm needs to know which fibers are - // part of a list of children (arrays, iterators). - newFiber.flags |= Forked; - return lastPlacedIndex; - } + if (step.done) { + // We've reached the end of the new children. We can delete the rest. + deleteRemainingChildren(returnFiber, oldFiber); - var current = newFiber.alternate; + return resultingFirstChild; + } - if (current !== null) { - var oldIndex = current.index; + if (oldFiber === null) { + // If we don't have any more existing children we can choose a fast path + // since the rest will all be insertions. + for (; !step.done; newIdx++, step = newChildren.next()) { + var _newFiber3 = createChild(returnFiber, step.value, lanes, debugInfo); - if (oldIndex < lastPlacedIndex) { - // This is a move. - newFiber.flags |= Placement | PlacementDEV; - return lastPlacedIndex; - } else { - // This item can stay in place. - return oldIndex; - } - } else { - // This is an insertion. - newFiber.flags |= Placement | PlacementDEV; - return lastPlacedIndex; + if (_newFiber3 === null) { + continue; } - } - function placeSingleChild(newFiber) { - // This is simpler for the single child case. We only need to do a - // placement for inserting new children. - if (shouldTrackSideEffects && newFiber.alternate === null) { - newFiber.flags |= Placement | PlacementDEV; + lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx); + + if (previousNewFiber === null) { + // TODO: Move out of the loop. This only happens for the first run. + resultingFirstChild = _newFiber3; + } else { + previousNewFiber.sibling = _newFiber3; } - return newFiber; + previousNewFiber = _newFiber3; } - function updateTextNode( - returnFiber, - current, - textContent, - lanes, - debugInfo - ) { - if (current === null || current.tag !== HostText) { - // Insert - var created = createFiberFromText( - textContent, - returnFiber.mode, - lanes - ); - created.return = returnFiber; + return resultingFirstChild; + } // Add all children to a key map for quick lookups. - { - created._debugInfo = debugInfo; - } - return created; - } else { - // Update - var existing = useFiber(current, textContent); - existing.return = returnFiber; + var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - { - existing._debugInfo = debugInfo; + for (; !step.done; newIdx++, step = newChildren.next()) { + var _newFiber4 = updateFromMap(existingChildren, returnFiber, newIdx, step.value, lanes, debugInfo); + + if (_newFiber4 !== null) { + if (shouldTrackSideEffects) { + if (_newFiber4.alternate !== null) { + // The new fiber is a work in progress, but if there exists a + // current, that means that we reused the fiber. We need to delete + // it from the child list so that we don't add it to the deletion + // list. + existingChildren.delete(_newFiber4.key === null ? newIdx : _newFiber4.key); } + } - return existing; + lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx); + + if (previousNewFiber === null) { + resultingFirstChild = _newFiber4; + } else { + previousNewFiber.sibling = _newFiber4; } + + previousNewFiber = _newFiber4; } + } + + if (shouldTrackSideEffects) { + // Any existing children that weren't consumed above were deleted. We need + // to add them to the deletion list. + existingChildren.forEach(function (child) { + return deleteChild(returnFiber, child); + }); + } - function updateElement(returnFiber, current, element, lanes, debugInfo) { + return resultingFirstChild; + } + + function reconcileSingleTextNode(returnFiber, currentFirstChild, textContent, lanes) { + // There's no need to check for keys on text nodes since we don't have a + // way to define them. + if (currentFirstChild !== null && currentFirstChild.tag === HostText) { + // We already have an existing node so let's just update it and delete + // the rest. + deleteRemainingChildren(returnFiber, currentFirstChild.sibling); + var existing = useFiber(currentFirstChild, textContent); + existing.return = returnFiber; + return existing; + } // The existing first child is not a text node so we need to create one + // and delete the existing ones. + + + deleteRemainingChildren(returnFiber, currentFirstChild); + var created = createFiberFromText(textContent, returnFiber.mode, lanes); + created.return = returnFiber; + return created; + } + + function reconcileSingleElement(returnFiber, currentFirstChild, element, lanes, debugInfo) { + var key = element.key; + var child = currentFirstChild; + + while (child !== null) { + // TODO: If key === null and child.key === null, then this only applies to + // the first item in the list. + if (child.key === key) { var elementType = element.type; if (elementType === REACT_FRAGMENT_TYPE) { - return updateFragment( - returnFiber, - current, - element.props.children, - lanes, - element.key, - debugInfo - ); - } - - if (current !== null) { - if ( - current.elementType === elementType || // Keep this check inline so it only runs on the false path: - isCompatibleFamilyForHotReloading(current, element) || // Lazy types should reconcile their resolved type. - // We need to do this after the Hot Reloading check above, - // because hot reloading has different semantics than prod because - // it doesn't resuspend. So we can't let the call below suspend. - (typeof elementType === "object" && - elementType !== null && - elementType.$$typeof === REACT_LAZY_TYPE && - resolveLazy(elementType) === current.type) - ) { - // Move based on index - var existing = useFiber(current, element.props); - coerceRef(returnFiber, current, existing, element); + if (child.tag === Fragment) { + deleteRemainingChildren(returnFiber, child.sibling); + var existing = useFiber(child, element.props.children); existing.return = returnFiber; { @@ -10001,13477 +9553,10258 @@ to return true:wantsResponderID| | return existing; } - } // Insert + } else { + if (child.elementType === elementType || ( // Keep this check inline so it only runs on the false path: + isCompatibleFamilyForHotReloading(child, element) ) || // Lazy types should reconcile their resolved type. + // We need to do this after the Hot Reloading check above, + // because hot reloading has different semantics than prod because + // it doesn't resuspend. So we can't let the call below suspend. + typeof elementType === 'object' && elementType !== null && elementType.$$typeof === REACT_LAZY_TYPE && resolveLazy(elementType) === child.type) { + deleteRemainingChildren(returnFiber, child.sibling); - var created = createFiberFromElement(element, returnFiber.mode, lanes); - coerceRef(returnFiber, current, created, element); - created.return = returnFiber; + var _existing = useFiber(child, element.props); + + coerceRef(returnFiber, child, _existing, element); + _existing.return = returnFiber; + + { + _existing._debugOwner = element._owner; + _existing._debugInfo = debugInfo; + } + + return _existing; + } + } // Didn't match. - { - created._debugInfo = debugInfo; - } - return created; + deleteRemainingChildren(returnFiber, child); + break; + } else { + deleteChild(returnFiber, child); } - function updatePortal(returnFiber, current, portal, lanes, debugInfo) { - if ( - current === null || - current.tag !== HostPortal || - current.stateNode.containerInfo !== portal.containerInfo || - current.stateNode.implementation !== portal.implementation - ) { - // Insert - var created = createFiberFromPortal(portal, returnFiber.mode, lanes); - created.return = returnFiber; + child = child.sibling; + } - { - created._debugInfo = debugInfo; - } + if (element.type === REACT_FRAGMENT_TYPE) { + var created = createFiberFromFragment(element.props.children, returnFiber.mode, lanes, element.key); + created.return = returnFiber; - return created; - } else { - // Update - var existing = useFiber(current, portal.children || []); - existing.return = returnFiber; + { + created._debugInfo = debugInfo; + } - { - existing._debugInfo = debugInfo; - } + return created; + } else { + var _created4 = createFiberFromElement(element, returnFiber.mode, lanes); + + coerceRef(returnFiber, currentFirstChild, _created4, element); + _created4.return = returnFiber; + + { + _created4._debugInfo = debugInfo; + } + + return _created4; + } + } + function reconcileSinglePortal(returnFiber, currentFirstChild, portal, lanes, debugInfo) { + var key = portal.key; + var child = currentFirstChild; + + while (child !== null) { + // TODO: If key === null and child.key === null, then this only applies to + // the first item in the list. + if (child.key === key) { + if (child.tag === HostPortal && child.stateNode.containerInfo === portal.containerInfo && child.stateNode.implementation === portal.implementation) { + deleteRemainingChildren(returnFiber, child.sibling); + var existing = useFiber(child, portal.children || []); + existing.return = returnFiber; return existing; + } else { + deleteRemainingChildren(returnFiber, child); + break; } + } else { + deleteChild(returnFiber, child); } - function updateFragment( - returnFiber, - current, - fragment, - lanes, - key, - debugInfo - ) { - if (current === null || current.tag !== Fragment) { - // Insert - var created = createFiberFromFragment( - fragment, - returnFiber.mode, - lanes, - key - ); - created.return = returnFiber; + child = child.sibling; + } - { - created._debugInfo = debugInfo; - } + var created = createFiberFromPortal(portal, returnFiber.mode, lanes); + created.return = returnFiber; + return created; + } // This API will tag the children with the side-effect of the reconciliation + // itself. They will be added to the side-effect list as we pass through the + // children and the parent. - return created; - } else { - // Update - var existing = useFiber(current, fragment); - existing.return = returnFiber; - { - existing._debugInfo = debugInfo; - } + function reconcileChildFibersImpl(returnFiber, currentFirstChild, newChild, lanes, debugInfo) { + // This function is only recursive for Usables/Lazy and not nested arrays. + // That's so that using a Lazy wrapper is unobservable to the Fragment + // convention. + // If the top level item is an array, we treat it as a set of children, + // not as a fragment. Nested arrays on the other hand will be treated as + // fragment nodes. Recursion happens at the normal flow. + // Handle top level unkeyed fragments as if they were arrays. + // This leads to an ambiguity between <>{[...]} and <>.... + // We treat the ambiguous cases above the same. + // We don't use recursion here because a fragment inside a fragment + // is no longer considered "top level" for these purposes. + var isUnkeyedTopLevelFragment = typeof newChild === 'object' && newChild !== null && newChild.type === REACT_FRAGMENT_TYPE && newChild.key === null; - return existing; - } + if (isUnkeyedTopLevelFragment) { + newChild = newChild.props.children; + } // Handle object types + + + if (typeof newChild === 'object' && newChild !== null) { + switch (newChild.$$typeof) { + case REACT_ELEMENT_TYPE: + return placeSingleChild(reconcileSingleElement(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo))); + + case REACT_PORTAL_TYPE: + return placeSingleChild(reconcileSinglePortal(returnFiber, currentFirstChild, newChild, lanes)); + + case REACT_LAZY_TYPE: + var payload = newChild._payload; + var init = newChild._init; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, init(payload), lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } + + if (isArray(newChild)) { + return reconcileChildrenArray(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); } - function createChild(returnFiber, newChild, lanes, debugInfo) { - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys. If the previous node is implicitly keyed - // we can continue to replace it without aborting even if it is not a text - // node. - var created = createFiberFromText( - // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - returnFiber.mode, - lanes - ); - created.return = returnFiber; + if (getIteratorFn(newChild)) { + return reconcileChildrenIterator(returnFiber, currentFirstChild, newChild, lanes, mergeDebugInfo(debugInfo, newChild._debugInfo)); + } // Usables are a valid React node type. When React encounters a Usable in + // a child position, it unwraps it using the same algorithm as `use`. For + // example, for promises, React will throw an exception to unwind the + // stack, then replay the component once the promise resolves. + // + // A difference from `use` is that React will keep unwrapping the value + // until it reaches a non-Usable type. + // + // e.g. Usable>> should resolve to T + // + // The structure is a bit unfortunate. Ideally, we shouldn't need to + // replay the entire begin phase of the parent fiber in order to reconcile + // the children again. This would require a somewhat significant refactor, + // because reconcilation happens deep within the begin phase, and + // depending on the type of work, not always at the end. We should + // consider as an future improvement. - { - created._debugInfo = debugInfo; - } - return created; - } + if (typeof newChild.then === 'function') { + var thenable = newChild; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, unwrapThenable(thenable), lanes, mergeDebugInfo(debugInfo, thenable._debugInfo)); + } - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - var _created = createFiberFromElement( - newChild, - returnFiber.mode, - lanes - ); + if (newChild.$$typeof === REACT_CONTEXT_TYPE) { + var context = newChild; + return reconcileChildFibersImpl(returnFiber, currentFirstChild, readContextDuringReconciliation(returnFiber, context, lanes), lanes, debugInfo); + } - coerceRef(returnFiber, null, _created, newChild); - _created.return = returnFiber; + throwOnInvalidObjectType(returnFiber, newChild); + } - { - _created._debugInfo = mergeDebugInfo( - debugInfo, - newChild._debugInfo - ); - } + if (typeof newChild === 'string' && newChild !== '' || typeof newChild === 'number' || typeof newChild === 'bigint') { + return placeSingleChild(reconcileSingleTextNode(returnFiber, currentFirstChild, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint + '' + newChild, lanes)); + } - return _created; - } + { + if (typeof newChild === 'function') { + warnOnFunctionType(returnFiber, newChild); + } - case REACT_PORTAL_TYPE: { - var _created2 = createFiberFromPortal( - newChild, - returnFiber.mode, - lanes - ); + if (typeof newChild === 'symbol') { + warnOnSymbolType(returnFiber, newChild); + } + } // Remaining cases are all treated as empty. - _created2.return = returnFiber; - { - _created2._debugInfo = debugInfo; - } + return deleteRemainingChildren(returnFiber, currentFirstChild); + } - return _created2; - } + function reconcileChildFibers(returnFiber, currentFirstChild, newChild, lanes) { + // This indirection only exists so we can reset `thenableState` at the end. + // It should get inlined by Closure. + thenableIndexCounter$1 = 0; + var firstChildFiber = reconcileChildFibersImpl(returnFiber, currentFirstChild, newChild, lanes, null // debugInfo + ); + thenableState$1 = null; // Don't bother to reset `thenableIndexCounter` to 0 because it always gets + // set at the beginning. - case REACT_LAZY_TYPE: { - var payload = newChild._payload; - var init = newChild._init; - return createChild( - returnFiber, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) // call merge after init - ); - } - } + return firstChildFiber; + } - if (isArray(newChild) || getIteratorFn(newChild)) { - var _created3 = createFiberFromFragment( - newChild, - returnFiber.mode, - lanes, - null - ); + return reconcileChildFibers; +} - _created3.return = returnFiber; +var reconcileChildFibers = createChildReconciler(true); +var mountChildFibers = createChildReconciler(false); +function resetChildReconcilerOnUnwind() { + // On unwind, clear any pending thenables that were used. + thenableState$1 = null; + thenableIndexCounter$1 = 0; +} +function cloneChildFibers(current, workInProgress) { + if (current !== null && workInProgress.child !== current.child) { + throw new Error('Resuming work not yet implemented.'); + } + + if (workInProgress.child === null) { + return; + } + + var currentChild = workInProgress.child; + var newChild = createWorkInProgress(currentChild, currentChild.pendingProps); + workInProgress.child = newChild; + newChild.return = workInProgress; + + while (currentChild.sibling !== null) { + currentChild = currentChild.sibling; + newChild = newChild.sibling = createWorkInProgress(currentChild, currentChild.pendingProps); + newChild.return = workInProgress; + } + + newChild.sibling = null; +} // Reset a workInProgress child set to prepare it for a second pass. + +function resetChildFibers(workInProgress, lanes) { + var child = workInProgress.child; + + while (child !== null) { + resetWorkInProgress(child, lanes); + child = child.sibling; + } +} - { - _created3._debugInfo = mergeDebugInfo( - debugInfo, - newChild._debugInfo - ); - } +// TODO: This isn't being used yet, but it's intended to replace the +// InvisibleParentContext that is currently managed by SuspenseContext. + +var currentTreeHiddenStackCursor = createCursor(null); +var prevEntangledRenderLanesCursor = createCursor(NoLanes); +function pushHiddenContext(fiber, context) { + var prevEntangledRenderLanes = getEntangledRenderLanes(); + push(prevEntangledRenderLanesCursor, prevEntangledRenderLanes, fiber); + push(currentTreeHiddenStackCursor, context, fiber); // When rendering a subtree that's currently hidden, we must include all + // lanes that would have rendered if the hidden subtree hadn't been deferred. + // That is, in order to reveal content from hidden -> visible, we must commit + // all the updates that we skipped when we originally hid the tree. + + setEntangledRenderLanes(mergeLanes(prevEntangledRenderLanes, context.baseLanes)); +} +function reuseHiddenContextOnStack(fiber) { + // This subtree is not currently hidden, so we don't need to add any lanes + // to the render lanes. But we still need to push something to avoid a + // context mismatch. Reuse the existing context on the stack. + push(prevEntangledRenderLanesCursor, getEntangledRenderLanes(), fiber); + push(currentTreeHiddenStackCursor, currentTreeHiddenStackCursor.current, fiber); +} +function popHiddenContext(fiber) { + // Restore the previous render lanes from the stack + setEntangledRenderLanes(prevEntangledRenderLanesCursor.current); + pop(currentTreeHiddenStackCursor, fiber); + pop(prevEntangledRenderLanesCursor, fiber); +} +function isCurrentTreeHidden() { + return currentTreeHiddenStackCursor.current !== null; +} + +// suspends, i.e. it's the nearest `catch` block on the stack. + +var suspenseHandlerStackCursor = createCursor(null); // Represents the outermost boundary that is not visible in the current tree. +// Everything above this is the "shell". When this is null, it means we're +// rendering in the shell of the app. If it's non-null, it means we're rendering +// deeper than the shell, inside a new tree that wasn't already visible. +// +// The main way we use this concept is to determine whether showing a fallback +// would result in a desirable or undesirable loading state. Activing a fallback +// in the shell is considered an undersirable loading state, because it would +// mean hiding visible (albeit stale) content in the current tree — we prefer to +// show the stale content, rather than switch to a fallback. But showing a +// fallback in a new tree is fine, because there's no stale content to +// prefer instead. + +var shellBoundary = null; +function getShellBoundary() { + return shellBoundary; +} +function pushPrimaryTreeSuspenseHandler(handler) { + // TODO: Pass as argument + var current = handler.alternate; + // propagated a single level. For example, when ForceSuspenseFallback is set, + // it should only force the nearest Suspense boundary into fallback mode. + + pushSuspenseListContext(handler, setDefaultShallowSuspenseListContext(suspenseStackCursor.current)); // Experimental feature: Some Suspense boundaries are marked as having an + // to push a nested Suspense handler, because it will get replaced by the + // outer fallback, anyway. Consider this as a future optimization. + + + push(suspenseHandlerStackCursor, handler, handler); + + if (shellBoundary === null) { + if (current === null || isCurrentTreeHidden()) { + // This boundary is not visible in the current UI. + shellBoundary = handler; + } else { + var prevState = current.memoizedState; + + if (prevState !== null) { + // This boundary is showing a fallback in the current UI. + shellBoundary = handler; + } + } + } +} +function pushFallbackTreeSuspenseHandler(fiber) { + // We're about to render the fallback. If something in the fallback suspends, + // it's akin to throwing inside of a `catch` block. This boundary should not + // capture. Reuse the existing handler on the stack. + reuseSuspenseHandlerOnStack(fiber); +} +function pushOffscreenSuspenseHandler(fiber) { + if (fiber.tag === OffscreenComponent) { + // A SuspenseList context is only pushed here to avoid a push/pop mismatch. + // Reuse the current value on the stack. + // TODO: We can avoid needing to push here by by forking popSuspenseHandler + // into separate functions for Suspense and Offscreen. + pushSuspenseListContext(fiber, suspenseStackCursor.current); + push(suspenseHandlerStackCursor, fiber, fiber); + + if (shellBoundary !== null) ; else { + var current = fiber.alternate; + + if (current !== null) { + var prevState = current.memoizedState; + + if (prevState !== null) { + // This is the first boundary in the stack that's already showing + // a fallback. So everything outside is considered the shell. + shellBoundary = fiber; + } + } + } + } else { + // This is a LegacyHidden component. + reuseSuspenseHandlerOnStack(fiber); + } +} +function reuseSuspenseHandlerOnStack(fiber) { + pushSuspenseListContext(fiber, suspenseStackCursor.current); + push(suspenseHandlerStackCursor, getSuspenseHandler(), fiber); +} +function getSuspenseHandler() { + return suspenseHandlerStackCursor.current; +} +function popSuspenseHandler(fiber) { + pop(suspenseHandlerStackCursor, fiber); + + if (shellBoundary === fiber) { + // Popping back into the shell. + shellBoundary = null; + } + + popSuspenseListContext(fiber); +} // SuspenseList context +// TODO: Move to a separate module? We may change the SuspenseList +// implementation to hide/show in the commit phase, anyway. + +var DefaultSuspenseContext = 0; +var SubtreeSuspenseContextMask = 1; // ForceSuspenseFallback can be used by SuspenseList to force newly added +// items into their fallback state during one of the render passes. + +var ForceSuspenseFallback = 2; +var suspenseStackCursor = createCursor(DefaultSuspenseContext); +function hasSuspenseListContext(parentContext, flag) { + return (parentContext & flag) !== 0; +} +function setDefaultShallowSuspenseListContext(parentContext) { + return parentContext & SubtreeSuspenseContextMask; +} +function setShallowSuspenseListContext(parentContext, shallowContext) { + return parentContext & SubtreeSuspenseContextMask | shallowContext; +} +function pushSuspenseListContext(fiber, newContext) { + push(suspenseStackCursor, newContext, fiber); +} +function popSuspenseListContext(fiber) { + pop(suspenseStackCursor, fiber); +} + +// A non-null SuspenseState means that it is blocked for one reason or another. +// - A non-null dehydrated field means it's blocked pending hydration. +// - A non-null dehydrated field can use isSuspenseInstancePending or +// isSuspenseInstanceFallback to query the reason for being dehydrated. +// - A null dehydrated field means it's blocked by something suspending and +// we're currently showing a fallback instead. + +function findFirstSuspended(row) { + var node = row; - return _created3; - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return createChild( - returnFiber, - unwrapThenable(thenable), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + while (node !== null) { + if (node.tag === SuspenseComponent) { + var state = node.memoizedState; - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return createChild( - returnFiber, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } + if (state !== null) { + var dehydrated = state.dehydrated; - throwOnInvalidObjectType(returnFiber, newChild); + if (dehydrated === null || isSuspenseInstancePending() || isSuspenseInstanceFallback()) { + return node; } + } + } else if (node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't + // keep track of whether it suspended or not. + node.memoizedProps.revealOrder !== undefined) { + var didSuspend = (node.flags & DidCapture) !== NoFlags$1; - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } + if (didSuspend) { + return node; + } + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } - } + if (node === row) { + return null; + } + while (node.sibling === null) { + if (node.return === null || node.return === row) { return null; } - function updateSlot(returnFiber, oldFiber, newChild, lanes, debugInfo) { - // Update the fiber if the keys match, otherwise return null. - var key = oldFiber !== null ? oldFiber.key : null; + node = node.return; + } - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys. If the previous node is implicitly keyed - // we can continue to replace it without aborting even if it is not a text - // node. - if (key !== null) { - return null; - } + node.sibling.return = node.return; + node = node.sibling; + } - return updateTextNode( - returnFiber, - oldFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes, - debugInfo - ); - } - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - if (newChild.key === key) { - return updateElement( - returnFiber, - oldFiber, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } else { - return null; - } - } + return null; +} - case REACT_PORTAL_TYPE: { - if (newChild.key === key) { - return updatePortal( - returnFiber, - oldFiber, - newChild, - lanes, - debugInfo - ); - } else { - return null; - } - } +var NoFlags = +/* */ +0; // Represents whether effect should fire. + +var HasEffect = +/* */ +1; // Represents the phase in which the effect (not the clean-up) fires. + +var Insertion = +/* */ +2; +var Layout = +/* */ +4; +var Passive = +/* */ +8; + +var didWarnAboutMismatchedHooksForComponent; +var didWarnUncachedGetSnapshot; +var didWarnAboutUseWrappedInTryCatch; +var didWarnAboutAsyncClientComponent; +var didWarnAboutUseFormState; + +{ + didWarnAboutMismatchedHooksForComponent = new Set(); + didWarnAboutUseWrappedInTryCatch = new Set(); + didWarnAboutAsyncClientComponent = new Set(); + didWarnAboutUseFormState = new Set(); +} // The effect "instance" is a shared object that remains the same for the entire +// lifetime of an effect. In Rust terms, a RefCell. We use it to store the +// "destroy" function that is returned from an effect, because that is stateful. +// The field is `undefined` if the effect is unmounted, or if the effect ran +// but is not stateful. We don't explicitly track whether the effect is mounted +// or unmounted because that can be inferred by the hiddenness of the fiber in +// the tree, i.e. whether there is a hidden Offscreen fiber above it. +// +// It's unfortunate that this is stored on a separate object, because it adds +// more memory per effect instance, but it's conceptually sound. I think there's +// likely a better data structure we could use for effects; perhaps just one +// array of effect instances per fiber. But I think this is OK for now despite +// the additional memory and we can follow up with performance +// optimizations later. +// These are set right before calling the component. + + +var renderLanes = NoLanes; // The work-in-progress fiber. I've named it differently to distinguish it from +// the work-in-progress hook. + +var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The +// current hook list is the list that belongs to the current fiber. The +// work-in-progress hook list is a new list that will be added to the +// work-in-progress fiber. + +var currentHook = null; +var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This +// does not get reset if we do another render pass; only when we're completely +// finished evaluating this component. This is an optimization so we know +// whether we need to clear render phase updates after a throw. + +var didScheduleRenderPhaseUpdate = false; // Where an update was scheduled only during the current render pass. This +// gets reset after each attempt. +// TODO: Maybe there's some way to consolidate this with +// `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`. + +var didScheduleRenderPhaseUpdateDuringThisPass = false; +var shouldDoubleInvokeUserFnsInHooksDEV = false; // Counts the number of useId hooks in this component. + +var thenableIndexCounter = 0; +var thenableState = null; // Used for ids that are generated completely client-side (i.e. not during +// hydration). This counter is global, so client ids are not stable across +// render attempts. + +var globalClientIdCounter = 0; +var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook + +var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders. +// The list stores the order of hooks used during the initial render (mount). +// Subsequent renders (updates) reference this list. + +var hookTypesDev = null; +var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore +// the dependencies for Hooks that need them (e.g. useEffect or useMemo). +// When true, such Hooks will always be "remounted". Only used during hot reload. + +var ignorePreviousDependencies = false; + +function mountHookTypesDev() { + { + var hookName = currentHookNameInDev; + + if (hookTypesDev === null) { + hookTypesDev = [hookName]; + } else { + hookTypesDev.push(hookName); + } + } +} - case REACT_LAZY_TYPE: { - var payload = newChild._payload; - var init = newChild._init; - return updateSlot( - returnFiber, - oldFiber, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } - } +function updateHookTypesDev() { + { + var hookName = currentHookNameInDev; - if (isArray(newChild) || getIteratorFn(newChild)) { - if (key !== null) { - return null; - } + if (hookTypesDev !== null) { + hookTypesUpdateIndexDev++; - return updateFragment( - returnFiber, - oldFiber, - newChild, - lanes, - null, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return updateSlot( - returnFiber, - oldFiber, - unwrapThenable(thenable), - lanes, - debugInfo - ); - } + if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) { + warnOnHookMismatchInDev(hookName); + } + } + } +} - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return updateSlot( - returnFiber, - oldFiber, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } +function checkDepsAreArrayDev(deps) { + { + if (deps !== undefined && deps !== null && !isArray(deps)) { + // Verify deps, but only on mount to avoid extra checks. + // It's unlikely their type would change as usually you define them inline. + error('%s received a final argument that is not an array (instead, received `%s`). When ' + 'specified, the final argument must be an array.', currentHookNameInDev, typeof deps); + } + } +} - throwOnInvalidObjectType(returnFiber, newChild); - } +function warnOnHookMismatchInDev(currentHookName) { + { + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } + if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) { + didWarnAboutMismatchedHooksForComponent.add(componentName); - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); + if (hookTypesDev !== null) { + var table = ''; + var secondColumnStart = 30; + + for (var i = 0; i <= hookTypesUpdateIndexDev; i++) { + var oldHookName = hookTypesDev[i]; + var newHookName = i === hookTypesUpdateIndexDev ? currentHookName : oldHookName; + var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up + // lol @ IE not supporting String#repeat + + while (row.length < secondColumnStart) { + row += ' '; } + + row += newHookName + '\n'; + table += row; } - return null; + error('React has detected a change in the order of Hooks called by %s. ' + 'This will lead to bugs and errors if not fixed. ' + 'For more information, read the Rules of Hooks: https://react.dev/link/rules-of-hooks\n\n' + ' Previous render Next render\n' + ' ------------------------------------------------------\n' + '%s' + ' ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n', componentName, table); } + } + } +} - function updateFromMap( - existingChildren, - returnFiber, - newIdx, - newChild, - lanes, - debugInfo - ) { - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - // Text nodes don't have keys, so we neither have to check the old nor - // new node for the key. If both are text nodes, they match. - var matchedFiber = existingChildren.get(newIdx) || null; - return updateTextNode( - returnFiber, - matchedFiber, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes, - debugInfo - ); - } - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: { - var _matchedFiber = - existingChildren.get( - newChild.key === null ? newIdx : newChild.key - ) || null; - - return updateElement( - returnFiber, - _matchedFiber, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } +function warnOnUseFormStateInDev() { + { + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - case REACT_PORTAL_TYPE: { - var _matchedFiber2 = - existingChildren.get( - newChild.key === null ? newIdx : newChild.key - ) || null; - - return updatePortal( - returnFiber, - _matchedFiber2, - newChild, - lanes, - debugInfo - ); - } + if (!didWarnAboutUseFormState.has(componentName)) { + didWarnAboutUseFormState.add(componentName); - case REACT_LAZY_TYPE: - var payload = newChild._payload; - var init = newChild._init; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + error('ReactDOM.useFormState has been renamed to React.useActionState. ' + 'Please update %s to use React.useActionState.', componentName); + } + } +} - if (isArray(newChild) || getIteratorFn(newChild)) { - var _matchedFiber3 = existingChildren.get(newIdx) || null; +function warnIfAsyncClientComponent(Component) { + { + // This dev-only check only works for detecting native async functions, + // not transpiled ones. There's also a prod check that we use to prevent + // async client components from crashing the app; the prod one works even + // for transpiled async functions. Neither mechanism is completely + // bulletproof but together they cover the most common cases. + var isAsyncFunction = // $FlowIgnore[method-unbinding] + Object.prototype.toString.call(Component) === '[object AsyncFunction]'; - return updateFragment( - returnFiber, - _matchedFiber3, - newChild, - lanes, - null, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usable node types - // - // Unwrap the inner value and recursively call this function again. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - unwrapThenable(thenable), - lanes, - debugInfo - ); - } + if (isAsyncFunction) { + // Encountered an async Client Component. This is not yet supported. + var componentName = getComponentNameFromFiber(currentlyRenderingFiber$1); - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return updateFromMap( - existingChildren, - returnFiber, - newIdx, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } + if (!didWarnAboutAsyncClientComponent.has(componentName)) { + didWarnAboutAsyncClientComponent.add(componentName); - throwOnInvalidObjectType(returnFiber, newChild); - } + error('async/await is not yet supported in Client Components, only ' + 'Server Components. This error is often caused by accidentally ' + "adding `'use client'` to a module that was originally written " + 'for the server.'); + } + } + } +} - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } +function throwInvalidHookError() { + throw new Error('Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for' + ' one of the following reasons:\n' + '1. You might have mismatching versions of React and the renderer (such as React DOM)\n' + '2. You might be breaking the Rules of Hooks\n' + '3. You might have more than one copy of React in the same app\n' + 'See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem.'); +} - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } - } +function areHookInputsEqual(nextDeps, prevDeps) { + { + if (ignorePreviousDependencies) { + // Only true when this component is being hot reloaded. + return false; + } + } - return null; - } - /** - * Warns if there is a duplicate or missing key - */ + if (prevDeps === null) { + { + error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev); + } - function warnOnInvalidKey(child, knownKeys, returnFiber) { - { - if (typeof child !== "object" || child === null) { - return knownKeys; - } + return false; + } - switch (child.$$typeof) { - case REACT_ELEMENT_TYPE: - case REACT_PORTAL_TYPE: - warnForMissingKey(child, returnFiber); - var key = child.key; + { + // Don't bother comparing lengths in prod because these arrays should be + // passed inline. + if (nextDeps.length !== prevDeps.length) { + error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + prevDeps.join(', ') + "]", "[" + nextDeps.join(', ') + "]"); + } + } // $FlowFixMe[incompatible-use] found when upgrading Flow - if (typeof key !== "string") { - break; - } - if (knownKeys === null) { - knownKeys = new Set(); - knownKeys.add(key); - break; - } + for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (objectIs(nextDeps[i], prevDeps[i])) { + continue; + } - if (!knownKeys.has(key)) { - knownKeys.add(key); - break; - } + return false; + } - error( - "Encountered two children with the same key, `%s`. " + - "Keys should be unique so that components maintain their identity " + - "across updates. Non-unique keys may cause children to be " + - "duplicated and/or omitted — the behavior is unsupported and " + - "could change in a future version.", - key - ); + return true; +} - break; +function renderWithHooks(current, workInProgress, Component, props, secondArg, nextRenderLanes) { + renderLanes = nextRenderLanes; + currentlyRenderingFiber$1 = workInProgress; + + { + hookTypesDev = current !== null ? current._debugHookTypes : null; + hookTypesUpdateIndexDev = -1; // Used for hot reloading: + + ignorePreviousDependencies = current !== null && current.type !== workInProgress.type; + warnIfAsyncClientComponent(Component); + } + + workInProgress.memoizedState = null; + workInProgress.updateQueue = null; + workInProgress.lanes = NoLanes; // The following should have already been reset + // currentHook = null; + // workInProgressHook = null; + // didScheduleRenderPhaseUpdate = false; + // localIdCounter = 0; + // thenableIndexCounter = 0; + // thenableState = null; + // TODO Warn if no hooks are used at all during mount, then some are used during update. + // Currently we will identify the update render as a mount because memoizedState === null. + // This is tricky because it's valid for certain types of components (e.g. React.lazy) + // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used. + // Non-stateful hooks (e.g. context) don't get added to memoizedState, + // so memoizedState would be null during updates and mounts. + + { + if (current !== null && current.memoizedState !== null) { + ReactSharedInternals.H = HooksDispatcherOnUpdateInDEV; + } else if (hookTypesDev !== null) { + // This dispatcher handles an edge case where a component is updating, + // but no stateful hooks have been used. + // We want to match the production code behavior (which will use HooksDispatcherOnMount), + // but with the extra DEV validation to ensure hooks ordering hasn't changed. + // This dispatcher does that. + ReactSharedInternals.H = HooksDispatcherOnMountWithHookTypesInDEV; + } else { + ReactSharedInternals.H = HooksDispatcherOnMountInDEV; + } + } // In Strict Mode, during development, user functions are double invoked to + // help detect side effects. The logic for how this is implemented for in + // hook components is a bit complex so let's break it down. + // + // We will invoke the entire component function twice. However, during the + // second invocation of the component, the hook state from the first + // invocation will be reused. That means things like `useMemo` functions won't + // run again, because the deps will match and the memoized result will + // be reused. + // + // We want memoized functions to run twice, too, so account for this, user + // functions are double invoked during the *first* invocation of the component + // function, and are *not* double invoked during the second incovation: + // + // - First execution of component function: user functions are double invoked + // - Second execution of component function (in Strict Mode, during + // development): user functions are not double invoked. + // + // This is intentional for a few reasons; most importantly, it's because of + // how `use` works when something suspends: it reuses the promise that was + // passed during the first attempt. This is itself a form of memoization. + // We need to be able to memoize the reactive inputs to the `use` call using + // a hook (i.e. `useMemo`), which means, the reactive inputs to `use` must + // come from the same component invocation as the output. + // + // There are plenty of tests to ensure this behavior is correct. + + + var shouldDoubleRenderDEV = (workInProgress.mode & StrictLegacyMode) !== NoMode; + shouldDoubleInvokeUserFnsInHooksDEV = shouldDoubleRenderDEV; + var children = Component(props, secondArg); + shouldDoubleInvokeUserFnsInHooksDEV = false; // Check if there was a render phase update + + if (didScheduleRenderPhaseUpdateDuringThisPass) { + // Keep rendering until the component stabilizes (there are no more render + // phase updates). + children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + } + + if (shouldDoubleRenderDEV) { + // In development, components are invoked twice to help detect side effects. + setIsStrictModeForDevtools(true); + + try { + children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + } finally { + setIsStrictModeForDevtools(false); + } + } + + finishRenderingHooks(current, workInProgress); + return children; +} - case REACT_LAZY_TYPE: - var payload = child._payload; - var init = child._init; - warnOnInvalidKey(init(payload), knownKeys, returnFiber); - break; - } - } +function finishRenderingHooks(current, workInProgress, Component) { + { + workInProgress._debugHookTypes = hookTypesDev; + } // We can assume the previous dispatcher is always this one, since we set it + // at the beginning of the render phase and there's no re-entrance. - return knownKeys; - } - function reconcileChildrenArray( - returnFiber, - currentFirstChild, - newChildren, - lanes, - debugInfo - ) { - // This algorithm can't optimize by searching from both ends since we - // don't have backpointers on fibers. I'm trying to see how far we can get - // with that model. If it ends up not being worth the tradeoffs, we can - // add it later. - // Even with a two ended optimization, we'd want to optimize for the case - // where there are few changes and brute force the comparison instead of - // going for the Map. It'd like to explore hitting that path first in - // forward-only mode and only go for the Map once we notice that we need - // lots of look ahead. This doesn't handle reversal as well as two ended - // search but that's unusual. Besides, for the two ended optimization to - // work on Iterables, we'd need to copy the whole set. - // In this first iteration, we'll just live with hitting the bad case - // (adding everything to a Map) in for every insert/move. - // If you change this code, also update reconcileChildrenIterator() which - // uses the same algorithm. - { - // First, validate keys. - var knownKeys = null; + ReactSharedInternals.H = ContextOnlyDispatcher; // This check uses currentHook so that it works the same in DEV and prod bundles. + // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles. - for (var i = 0; i < newChildren.length; i++) { - var child = newChildren[i]; - knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); - } - } + var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null; + renderLanes = NoLanes; + currentlyRenderingFiber$1 = null; + currentHook = null; + workInProgressHook = null; - var resultingFirstChild = null; - var previousNewFiber = null; - var oldFiber = currentFirstChild; - var lastPlacedIndex = 0; - var newIdx = 0; - var nextOldFiber = null; + { + currentHookNameInDev = null; + hookTypesDev = null; + hookTypesUpdateIndexDev = -1; // Confirm that a static flag was not added or removed since the last + // render. If this fires, it suggests that we incorrectly reset the static + // flags in some other part of the codebase. This has happened before, for + // example, in the SuspenseList implementation. - for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) { - if (oldFiber.index > newIdx) { - nextOldFiber = oldFiber; - oldFiber = null; - } else { - nextOldFiber = oldFiber.sibling; - } + if (current !== null && (current.flags & StaticMask) !== (workInProgress.flags & StaticMask) && ( // Disable this warning in legacy mode, because legacy Suspense is weird + // and creates false positives. To make this work in legacy mode, we'd + // need to mark fibers that commit in an incomplete state, somehow. For + // now I'll disable the warning that most of the bugs that would trigger + // it are either exclusive to concurrent mode or exist in both. + (current.mode & ConcurrentMode) !== NoMode)) { + error('Internal React error: Expected static flag was missing. Please ' + 'notify the React team.'); + } + } - var newFiber = updateSlot( - returnFiber, - oldFiber, - newChildren[newIdx], - lanes, - debugInfo - ); - - if (newFiber === null) { - // TODO: This breaks on empty slots like null children. That's - // unfortunate because it triggers the slow path all the time. We need - // a better way to communicate whether this was a miss or null, - // boolean, undefined, etc. - if (oldFiber === null) { - oldFiber = nextOldFiber; - } + didScheduleRenderPhaseUpdate = false; // This is reset by checkDidRenderIdHook + // localIdCounter = 0; - break; - } + thenableIndexCounter = 0; + thenableState = null; - if (shouldTrackSideEffects) { - if (oldFiber && newFiber.alternate === null) { - // We matched the slot, but we didn't reuse the existing fiber, so we - // need to delete the existing child. - deleteChild(returnFiber, oldFiber); - } - } + if (didRenderTooFewHooks) { + throw new Error('Rendered fewer hooks than expected. This may be caused by an accidental ' + 'early return statement.'); + } - lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + { + if (checkIfUseWrappedInTryCatch()) { + var componentName = getComponentNameFromFiber(workInProgress) || 'Unknown'; - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = newFiber; - } else { - // TODO: Defer siblings if we're not at the right index for this slot. - // I.e. if we had null values before, then we want to defer this - // for each null value. However, we also don't want to call updateSlot - // with the previous one. - previousNewFiber.sibling = newFiber; - } + if (!didWarnAboutUseWrappedInTryCatch.has(componentName) && // This warning also fires if you suspend with `use` inside an + // async component. Since we warn for that above, we'll silence this + // second warning by checking here. + !didWarnAboutAsyncClientComponent.has(componentName)) { + didWarnAboutUseWrappedInTryCatch.add(componentName); - previousNewFiber = newFiber; - oldFiber = nextOldFiber; - } + error('`use` was called from inside a try/catch block. This is not allowed ' + 'and can lead to unexpected behavior. To handle errors triggered ' + 'by `use`, wrap your component in a error boundary.'); + } + } + } +} - if (newIdx === newChildren.length) { - // We've reached the end of the new children. We can delete the rest. - deleteRemainingChildren(returnFiber, oldFiber); +function replaySuspendedComponentWithHooks(current, workInProgress, Component, props, secondArg) { + // This function is used to replay a component that previously suspended, + // after its data resolves. + // + // It's a simplified version of renderWithHooks, but it doesn't need to do + // most of the set up work because they weren't reset when we suspended; they + // only get reset when the component either completes (finishRenderingHooks) + // or unwinds (resetHooksOnUnwind). + { + hookTypesUpdateIndexDev = -1; // Used for hot reloading: + + ignorePreviousDependencies = current !== null && current.type !== workInProgress.type; + } + + var children = renderWithHooksAgain(workInProgress, Component, props, secondArg); + finishRenderingHooks(current, workInProgress); + return children; +} - return resultingFirstChild; - } +function renderWithHooksAgain(workInProgress, Component, props, secondArg) { + // This is used to perform another render pass. It's used when setState is + // called during render, and for double invoking components in Strict Mode + // during development. + // + // The state from the previous pass is reused whenever possible. So, state + // updates that were already processed are not processed again, and memoized + // functions (`useMemo`) are not invoked again. + // + // Keep rendering in a loop for as long as render phase updates continue to + // be scheduled. Use a counter to prevent infinite loops. + currentlyRenderingFiber$1 = workInProgress; + var numberOfReRenders = 0; + var children; + + do { + if (didScheduleRenderPhaseUpdateDuringThisPass) { + // It's possible that a use() value depended on a state that was updated in + // this rerender, so we need to watch for different thenables this time. + thenableState = null; + } - if (oldFiber === null) { - // If we don't have any more existing children we can choose a fast path - // since the rest will all be insertions. - for (; newIdx < newChildren.length; newIdx++) { - var _newFiber = createChild( - returnFiber, - newChildren[newIdx], - lanes, - debugInfo - ); + thenableIndexCounter = 0; + didScheduleRenderPhaseUpdateDuringThisPass = false; - if (_newFiber === null) { - continue; - } + if (numberOfReRenders >= RE_RENDER_LIMIT) { + throw new Error('Too many re-renders. React limits the number of renders to prevent ' + 'an infinite loop.'); + } - lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx); + numberOfReRenders += 1; - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = _newFiber; - } else { - previousNewFiber.sibling = _newFiber; - } + { + // Even when hot reloading, allow dependencies to stabilize + // after first render to prevent infinite render phase updates. + ignorePreviousDependencies = false; + } // Start over from the beginning of the list - previousNewFiber = _newFiber; - } - return resultingFirstChild; - } // Add all children to a key map for quick lookups. - - var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - - for (; newIdx < newChildren.length; newIdx++) { - var _newFiber2 = updateFromMap( - existingChildren, - returnFiber, - newIdx, - newChildren[newIdx], - lanes, - debugInfo - ); - - if (_newFiber2 !== null) { - if (shouldTrackSideEffects) { - if (_newFiber2.alternate !== null) { - // The new fiber is a work in progress, but if there exists a - // current, that means that we reused the fiber. We need to delete - // it from the child list so that we don't add it to the deletion - // list. - existingChildren.delete( - _newFiber2.key === null ? newIdx : _newFiber2.key - ); - } - } + currentHook = null; + workInProgressHook = null; + workInProgress.updateQueue = null; - lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx); + { + // Also validate hook order for cascading updates. + hookTypesUpdateIndexDev = -1; + } - if (previousNewFiber === null) { - resultingFirstChild = _newFiber2; - } else { - previousNewFiber.sibling = _newFiber2; - } + ReactSharedInternals.H = HooksDispatcherOnRerenderInDEV ; + children = Component(props, secondArg); + } while (didScheduleRenderPhaseUpdateDuringThisPass); - previousNewFiber = _newFiber2; - } - } + return children; +} - if (shouldTrackSideEffects) { - // Any existing children that weren't consumed above were deleted. We need - // to add them to the deletion list. - existingChildren.forEach(function (child) { - return deleteChild(returnFiber, child); - }); - } +function renderTransitionAwareHostComponentWithHooks(current, workInProgress, lanes) { + if (!enableAsyncActions) { + throw new Error('Not implemented.'); + } - return resultingFirstChild; - } + return renderWithHooks(current, workInProgress, TransitionAwareHostComponent, null, null, lanes); +} +function TransitionAwareHostComponent() { + if (!enableAsyncActions) { + throw new Error('Not implemented.'); + } - function reconcileChildrenIterator( - returnFiber, - currentFirstChild, - newChildrenIterable, - lanes, - debugInfo - ) { - // This is the same implementation as reconcileChildrenArray(), - // but using the iterator instead. - var iteratorFn = getIteratorFn(newChildrenIterable); + var dispatcher = ReactSharedInternals.H; - if (typeof iteratorFn !== "function") { - throw new Error( - "An object is not an iterable. This error is likely caused by a bug in " + - "React. Please file an issue." - ); - } + var _dispatcher$useState = dispatcher.useState(), + maybeThenable = _dispatcher$useState[0]; - { - // We don't support rendering Generators because it's a mutation. - // See https://github.com/facebook/react/issues/12995 - if ( - typeof Symbol === "function" && // $FlowFixMe[prop-missing] Flow doesn't know about toStringTag - newChildrenIterable[Symbol.toStringTag] === "Generator" - ) { - if (!didWarnAboutGenerators) { - error( - "Using Generators as children is unsupported and will likely yield " + - "unexpected results because enumerating a generator mutates it. " + - "You may convert it to an array with `Array.from()` or the " + - "`[...spread]` operator before rendering. Keep in mind " + - "you might need to polyfill these features for older browsers." - ); - } + var nextState; - didWarnAboutGenerators = true; - } // Warn about using Maps as children + if (typeof maybeThenable.then === 'function') { + var thenable = maybeThenable; + nextState = useThenable(thenable); + } else { + var status = maybeThenable; + nextState = status; + } // The "reset state" is an object. If it changes, that means something + // requested that we reset the form. - if (newChildrenIterable.entries === iteratorFn) { - if (!didWarnAboutMaps) { - error( - "Using Maps as children is not supported. " + - "Use an array of keyed ReactElements instead." - ); - } - didWarnAboutMaps = true; - } // First, validate keys. - // We'll get a different iterator later for the main pass. + var _dispatcher$useState2 = dispatcher.useState(), + nextResetState = _dispatcher$useState2[0]; - var _newChildren = iteratorFn.call(newChildrenIterable); + var prevResetState = currentHook !== null ? currentHook.memoizedState : null; - if (_newChildren) { - var knownKeys = null; + if (prevResetState !== nextResetState) { + // Schedule a form reset + currentlyRenderingFiber$1.flags |= FormReset; + } - var _step = _newChildren.next(); + return nextState; +} +function bailoutHooks(current, workInProgress, lanes) { + workInProgress.updateQueue = current.updateQueue; // TODO: Don't need to reset the flags here, because they're reset in the + // complete phase (bubbleProperties). - for (; !_step.done; _step = _newChildren.next()) { - var child = _step.value; - knownKeys = warnOnInvalidKey(child, knownKeys, returnFiber); - } - } - } + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags &= ~(MountPassiveDev | MountLayoutDev | Passive$1 | Update); + } else { + workInProgress.flags &= ~(Passive$1 | Update); + } - var newChildren = iteratorFn.call(newChildrenIterable); + current.lanes = removeLanes(current.lanes, lanes); +} +function resetHooksAfterThrow() { + // This is called immediaetly after a throw. It shouldn't reset the entire + // module state, because the work loop might decide to replay the component + // again without rewinding. + // + // It should only reset things like the current dispatcher, to prevent hooks + // from being called outside of a component. + currentlyRenderingFiber$1 = null; // We can assume the previous dispatcher is always this one, since we set it + // at the beginning of the render phase and there's no re-entrance. + + ReactSharedInternals.H = ContextOnlyDispatcher; +} +function resetHooksOnUnwind(workInProgress) { + if (didScheduleRenderPhaseUpdate) { + // There were render phase updates. These are only valid for this render + // phase, which we are now aborting. Remove the updates from the queues so + // they do not persist to the next render. Do not remove updates from hooks + // that weren't processed. + // + // Only reset the updates from the queue if it has a clone. If it does + // not have a clone, that means it wasn't processed, and the updates were + // scheduled before we entered the render phase. + var hook = workInProgress.memoizedState; - if (newChildren == null) { - throw new Error("An iterable object provided no iterator."); - } + while (hook !== null) { + var queue = hook.queue; - var resultingFirstChild = null; - var previousNewFiber = null; - var oldFiber = currentFirstChild; - var lastPlacedIndex = 0; - var newIdx = 0; - var nextOldFiber = null; - var step = newChildren.next(); + if (queue !== null) { + queue.pending = null; + } - for ( - ; - oldFiber !== null && !step.done; - newIdx++, step = newChildren.next() - ) { - if (oldFiber.index > newIdx) { - nextOldFiber = oldFiber; - oldFiber = null; - } else { - nextOldFiber = oldFiber.sibling; - } + hook = hook.next; + } - var newFiber = updateSlot( - returnFiber, - oldFiber, - step.value, - lanes, - debugInfo - ); - - if (newFiber === null) { - // TODO: This breaks on empty slots like null children. That's - // unfortunate because it triggers the slow path all the time. We need - // a better way to communicate whether this was a miss or null, - // boolean, undefined, etc. - if (oldFiber === null) { - oldFiber = nextOldFiber; - } + didScheduleRenderPhaseUpdate = false; + } - break; - } + renderLanes = NoLanes; + currentlyRenderingFiber$1 = null; + currentHook = null; + workInProgressHook = null; - if (shouldTrackSideEffects) { - if (oldFiber && newFiber.alternate === null) { - // We matched the slot, but we didn't reuse the existing fiber, so we - // need to delete the existing child. - deleteChild(returnFiber, oldFiber); - } - } + { + hookTypesDev = null; + hookTypesUpdateIndexDev = -1; + currentHookNameInDev = null; + } - lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx); + didScheduleRenderPhaseUpdateDuringThisPass = false; + thenableIndexCounter = 0; + thenableState = null; +} - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = newFiber; - } else { - // TODO: Defer siblings if we're not at the right index for this slot. - // I.e. if we had null values before, then we want to defer this - // for each null value. However, we also don't want to call updateSlot - // with the previous one. - previousNewFiber.sibling = newFiber; - } +function mountWorkInProgressHook() { + var hook = { + memoizedState: null, + baseState: null, + baseQueue: null, + queue: null, + next: null + }; + + if (workInProgressHook === null) { + // This is the first hook in the list + currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook; + } else { + // Append to the end of the list + workInProgressHook = workInProgressHook.next = hook; + } + + return workInProgressHook; +} - previousNewFiber = newFiber; - oldFiber = nextOldFiber; - } +function updateWorkInProgressHook() { + // This function is used both for updates and for re-renders triggered by a + // render phase update. It assumes there is either a current hook we can + // clone, or a work-in-progress hook from a previous render pass that we can + // use as a base. + var nextCurrentHook; + + if (currentHook === null) { + var current = currentlyRenderingFiber$1.alternate; + + if (current !== null) { + nextCurrentHook = current.memoizedState; + } else { + nextCurrentHook = null; + } + } else { + nextCurrentHook = currentHook.next; + } + + var nextWorkInProgressHook; + + if (workInProgressHook === null) { + nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState; + } else { + nextWorkInProgressHook = workInProgressHook.next; + } + + if (nextWorkInProgressHook !== null) { + // There's already a work-in-progress. Reuse it. + workInProgressHook = nextWorkInProgressHook; + nextWorkInProgressHook = workInProgressHook.next; + currentHook = nextCurrentHook; + } else { + // Clone from the current hook. + if (nextCurrentHook === null) { + var currentFiber = currentlyRenderingFiber$1.alternate; + + if (currentFiber === null) { + // This is the initial render. This branch is reached when the component + // suspends, resumes, then renders an additional hook. + // Should never be reached because we should switch to the mount dispatcher first. + throw new Error('Update hook called on initial render. This is likely a bug in React. Please file an issue.'); + } else { + // This is an update. We should always have a current hook. + throw new Error('Rendered more hooks than during the previous render.'); + } + } - if (step.done) { - // We've reached the end of the new children. We can delete the rest. - deleteRemainingChildren(returnFiber, oldFiber); + currentHook = nextCurrentHook; + var newHook = { + memoizedState: currentHook.memoizedState, + baseState: currentHook.baseState, + baseQueue: currentHook.baseQueue, + queue: currentHook.queue, + next: null + }; - return resultingFirstChild; - } + if (workInProgressHook === null) { + // This is the first hook in the list. + currentlyRenderingFiber$1.memoizedState = workInProgressHook = newHook; + } else { + // Append to the end of the list. + workInProgressHook = workInProgressHook.next = newHook; + } + } - if (oldFiber === null) { - // If we don't have any more existing children we can choose a fast path - // since the rest will all be insertions. - for (; !step.done; newIdx++, step = newChildren.next()) { - var _newFiber3 = createChild( - returnFiber, - step.value, - lanes, - debugInfo - ); + return workInProgressHook; +} // NOTE: defining two versions of this function to avoid size impact when this feature is disabled. +// Previously this function was inlined, the additional `memoCache` property makes it not inlined. - if (_newFiber3 === null) { - continue; - } - lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx); +var createFunctionComponentUpdateQueue; - if (previousNewFiber === null) { - // TODO: Move out of the loop. This only happens for the first run. - resultingFirstChild = _newFiber3; - } else { - previousNewFiber.sibling = _newFiber3; - } +{ + createFunctionComponentUpdateQueue = function () { + return { + lastEffect: null, + events: null, + stores: null, + memoCache: null + }; + }; +} - previousNewFiber = _newFiber3; - } +function useThenable(thenable) { + // Track the position of the thenable within this fiber. + var index = thenableIndexCounter; + thenableIndexCounter += 1; - return resultingFirstChild; - } // Add all children to a key map for quick lookups. - - var existingChildren = mapRemainingChildren(oldFiber); // Keep scanning and use the map to restore deleted items as moves. - - for (; !step.done; newIdx++, step = newChildren.next()) { - var _newFiber4 = updateFromMap( - existingChildren, - returnFiber, - newIdx, - step.value, - lanes, - debugInfo - ); - - if (_newFiber4 !== null) { - if (shouldTrackSideEffects) { - if (_newFiber4.alternate !== null) { - // The new fiber is a work in progress, but if there exists a - // current, that means that we reused the fiber. We need to delete - // it from the child list so that we don't add it to the deletion - // list. - existingChildren.delete( - _newFiber4.key === null ? newIdx : _newFiber4.key - ); - } - } + if (thenableState === null) { + thenableState = createThenableState(); + } - lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx); + var result = trackUsedThenable(thenableState, thenable, index); - if (previousNewFiber === null) { - resultingFirstChild = _newFiber4; - } else { - previousNewFiber.sibling = _newFiber4; - } + if (currentlyRenderingFiber$1.alternate === null && (workInProgressHook === null ? currentlyRenderingFiber$1.memoizedState === null : workInProgressHook.next === null)) { + // Initial render, and either this is the first time the component is + // called, or there were no Hooks called after this use() the previous + // time (perhaps because it threw). Subsequent Hook calls should use the + // mount dispatcher. + { + ReactSharedInternals.H = HooksDispatcherOnMountInDEV; + } + } - previousNewFiber = _newFiber4; - } - } + return result; +} - if (shouldTrackSideEffects) { - // Any existing children that weren't consumed above were deleted. We need - // to add them to the deletion list. - existingChildren.forEach(function (child) { - return deleteChild(returnFiber, child); - }); - } +function use(usable) { + if (usable !== null && typeof usable === 'object') { + // $FlowFixMe[method-unbinding] + if (typeof usable.then === 'function') { + // This is a thenable. + var thenable = usable; + return useThenable(thenable); + } else if (usable.$$typeof === REACT_CONTEXT_TYPE) { + var context = usable; + return readContext(context); + } + } // eslint-disable-next-line react-internal/safe-string-coercion - return resultingFirstChild; - } - function reconcileSingleTextNode( - returnFiber, - currentFirstChild, - textContent, - lanes - ) { - // There's no need to check for keys on text nodes since we don't have a - // way to define them. - if (currentFirstChild !== null && currentFirstChild.tag === HostText) { - // We already have an existing node so let's just update it and delete - // the rest. - deleteRemainingChildren(returnFiber, currentFirstChild.sibling); - var existing = useFiber(currentFirstChild, textContent); - existing.return = returnFiber; - return existing; - } // The existing first child is not a text node so we need to create one - // and delete the existing ones. - - deleteRemainingChildren(returnFiber, currentFirstChild); - var created = createFiberFromText(textContent, returnFiber.mode, lanes); - created.return = returnFiber; - return created; - } - - function reconcileSingleElement( - returnFiber, - currentFirstChild, - element, - lanes, - debugInfo - ) { - var key = element.key; - var child = currentFirstChild; - - while (child !== null) { - // TODO: If key === null and child.key === null, then this only applies to - // the first item in the list. - if (child.key === key) { - var elementType = element.type; - - if (elementType === REACT_FRAGMENT_TYPE) { - if (child.tag === Fragment) { - deleteRemainingChildren(returnFiber, child.sibling); - var existing = useFiber(child, element.props.children); - existing.return = returnFiber; + throw new Error('An unsupported type was passed to use(): ' + String(usable)); +} - { - existing._debugOwner = element._owner; - existing._debugInfo = debugInfo; - } +function useMemoCache(size) { + var memoCache = null; // Fast-path, load memo cache from wip fiber if already prepared - return existing; - } - } else { - if ( - child.elementType === elementType || // Keep this check inline so it only runs on the false path: - isCompatibleFamilyForHotReloading(child, element) || // Lazy types should reconcile their resolved type. - // We need to do this after the Hot Reloading check above, - // because hot reloading has different semantics than prod because - // it doesn't resuspend. So we can't let the call below suspend. - (typeof elementType === "object" && - elementType !== null && - elementType.$$typeof === REACT_LAZY_TYPE && - resolveLazy(elementType) === child.type) - ) { - deleteRemainingChildren(returnFiber, child.sibling); + var updateQueue = currentlyRenderingFiber$1.updateQueue; - var _existing = useFiber(child, element.props); + if (updateQueue !== null) { + memoCache = updateQueue.memoCache; + } // Otherwise clone from the current fiber - coerceRef(returnFiber, child, _existing, element); - _existing.return = returnFiber; - { - _existing._debugOwner = element._owner; - _existing._debugInfo = debugInfo; - } + if (memoCache == null) { + var current = currentlyRenderingFiber$1.alternate; - return _existing; - } - } // Didn't match. + if (current !== null) { + var currentUpdateQueue = current.updateQueue; - deleteRemainingChildren(returnFiber, child); - break; - } else { - deleteChild(returnFiber, child); - } + if (currentUpdateQueue !== null) { + var currentMemoCache = currentUpdateQueue.memoCache; - child = child.sibling; + if (currentMemoCache != null) { + memoCache = { + data: currentMemoCache.data.map(function (array) { + return array.slice(); + }), + index: 0 + }; } + } + } + } // Finally fall back to allocating a fresh instance of the cache - if (element.type === REACT_FRAGMENT_TYPE) { - var created = createFiberFromFragment( - element.props.children, - returnFiber.mode, - lanes, - element.key - ); - created.return = returnFiber; - { - created._debugInfo = debugInfo; - } + if (memoCache == null) { + memoCache = { + data: [], + index: 0 + }; + } - return created; - } else { - var _created4 = createFiberFromElement( - element, - returnFiber.mode, - lanes - ); + if (updateQueue === null) { + updateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = updateQueue; + } - coerceRef(returnFiber, currentFirstChild, _created4, element); - _created4.return = returnFiber; + updateQueue.memoCache = memoCache; + var data = memoCache.data[memoCache.index]; - { - _created4._debugInfo = debugInfo; - } + if (data === undefined) { + data = memoCache.data[memoCache.index] = new Array(size); - return _created4; - } - } - - function reconcileSinglePortal( - returnFiber, - currentFirstChild, - portal, - lanes, - debugInfo - ) { - var key = portal.key; - var child = currentFirstChild; - - while (child !== null) { - // TODO: If key === null and child.key === null, then this only applies to - // the first item in the list. - if (child.key === key) { - if ( - child.tag === HostPortal && - child.stateNode.containerInfo === portal.containerInfo && - child.stateNode.implementation === portal.implementation - ) { - deleteRemainingChildren(returnFiber, child.sibling); - var existing = useFiber(child, portal.children || []); - existing.return = returnFiber; - return existing; - } else { - deleteRemainingChildren(returnFiber, child); - break; - } - } else { - deleteChild(returnFiber, child); - } + for (var i = 0; i < size; i++) { + data[i] = REACT_MEMO_CACHE_SENTINEL; + } + } else if (data.length !== size) { + // TODO: consider warning or throwing here + { + error('Expected a constant size argument for each invocation of useMemoCache. ' + 'The previous cache was allocated with size %s but size %s was requested.', data.length, size); + } + } - child = child.sibling; - } - - var created = createFiberFromPortal(portal, returnFiber.mode, lanes); - created.return = returnFiber; - return created; - } // This API will tag the children with the side-effect of the reconciliation - // itself. They will be added to the side-effect list as we pass through the - // children and the parent. - - function reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - newChild, - lanes, - debugInfo - ) { - // This function is only recursive for Usables/Lazy and not nested arrays. - // That's so that using a Lazy wrapper is unobservable to the Fragment - // convention. - // If the top level item is an array, we treat it as a set of children, - // not as a fragment. Nested arrays on the other hand will be treated as - // fragment nodes. Recursion happens at the normal flow. - // Handle top level unkeyed fragments as if they were arrays. - // This leads to an ambiguity between <>{[...]} and <>.... - // We treat the ambiguous cases above the same. - // We don't use recursion here because a fragment inside a fragment - // is no longer considered "top level" for these purposes. - var isUnkeyedTopLevelFragment = - typeof newChild === "object" && - newChild !== null && - newChild.type === REACT_FRAGMENT_TYPE && - newChild.key === null; - - if (isUnkeyedTopLevelFragment) { - newChild = newChild.props.children; - } // Handle object types - - if (typeof newChild === "object" && newChild !== null) { - switch (newChild.$$typeof) { - case REACT_ELEMENT_TYPE: - return placeSingleChild( - reconcileSingleElement( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ) - ); - - case REACT_PORTAL_TYPE: - return placeSingleChild( - reconcileSinglePortal( - returnFiber, - currentFirstChild, - newChild, - lanes - ) - ); - - case REACT_LAZY_TYPE: - var payload = newChild._payload; - var init = newChild._init; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - init(payload), - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } + memoCache.index++; + return data; +} - if (isArray(newChild)) { - return reconcileChildrenArray( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } +function basicStateReducer(state, action) { + // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + return typeof action === 'function' ? action(state) : action; +} - if (getIteratorFn(newChild)) { - return reconcileChildrenIterator( - returnFiber, - currentFirstChild, - newChild, - lanes, - mergeDebugInfo(debugInfo, newChild._debugInfo) - ); - } // Usables are a valid React node type. When React encounters a Usable in - // a child position, it unwraps it using the same algorithm as `use`. For - // example, for promises, React will throw an exception to unwind the - // stack, then replay the component once the promise resolves. - // - // A difference from `use` is that React will keep unwrapping the value - // until it reaches a non-Usable type. - // - // e.g. Usable>> should resolve to T - // - // The structure is a bit unfortunate. Ideally, we shouldn't need to - // replay the entire begin phase of the parent fiber in order to reconcile - // the children again. This would require a somewhat significant refactor, - // because reconcilation happens deep within the begin phase, and - // depending on the type of work, not always at the end. We should - // consider as an future improvement. - - if (typeof newChild.then === "function") { - var thenable = newChild; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - unwrapThenable(thenable), - lanes, - mergeDebugInfo(debugInfo, thenable._debugInfo) - ); - } +function mountReducer(reducer, initialArg, init) { + var hook = mountWorkInProgressHook(); + var initialState; + + if (init !== undefined) { + initialState = init(initialArg); + + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + init(initialArg); + setIsStrictModeForDevtools(false); + } + } else { + initialState = initialArg; + } + + hook.memoizedState = hook.baseState = initialState; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: reducer, + lastRenderedState: initialState + }; + hook.queue = queue; + var dispatch = queue.dispatch = dispatchReducerAction.bind(null, currentlyRenderingFiber$1, queue); + return [hook.memoizedState, dispatch]; +} - if (newChild.$$typeof === REACT_CONTEXT_TYPE) { - var context = newChild; - return reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - readContextDuringReconciliation(returnFiber, context, lanes), - lanes, - debugInfo - ); - } +function updateReducer(reducer, initialArg, init) { + var hook = updateWorkInProgressHook(); + return updateReducerImpl(hook, currentHook, reducer); +} - throwOnInvalidObjectType(returnFiber, newChild); - } +function updateReducerImpl(hook, current, reducer) { + var queue = hook.queue; - if ( - (typeof newChild === "string" && newChild !== "") || - typeof newChild === "number" || - typeof newChild === "bigint" - ) { - return placeSingleChild( - reconcileSingleTextNode( - returnFiber, - currentFirstChild, // $FlowFixMe[unsafe-addition] Flow doesn't want us to use `+` operator with string and bigint - "" + newChild, - lanes - ) - ); - } + if (queue === null) { + throw new Error('Should have a queue. This is likely a bug in React. Please file an issue.'); + } - { - if (typeof newChild === "function") { - warnOnFunctionType(returnFiber, newChild); - } + queue.lastRenderedReducer = reducer; // The last rebase update that is NOT part of the base state. - if (typeof newChild === "symbol") { - warnOnSymbolType(returnFiber, newChild); - } - } // Remaining cases are all treated as empty. + var baseQueue = hook.baseQueue; // The last pending update that hasn't been processed yet. - return deleteRemainingChildren(returnFiber, currentFirstChild); - } + var pendingQueue = queue.pending; + + if (pendingQueue !== null) { + // We have new updates that haven't been processed yet. + // We'll add them to the base queue. + if (baseQueue !== null) { + // Merge the pending queue and the base queue. + var baseFirst = baseQueue.next; + var pendingFirst = pendingQueue.next; + baseQueue.next = pendingFirst; + pendingQueue.next = baseFirst; + } - function reconcileChildFibers( - returnFiber, - currentFirstChild, - newChild, - lanes - ) { - // This indirection only exists so we can reset `thenableState` at the end. - // It should get inlined by Closure. - thenableIndexCounter$1 = 0; - var firstChildFiber = reconcileChildFibersImpl( - returnFiber, - currentFirstChild, - newChild, - lanes, - null // debugInfo - ); - thenableState$1 = null; // Don't bother to reset `thenableIndexCounter` to 0 because it always gets - // set at the beginning. + { + if (current.baseQueue !== baseQueue) { + // Internal invariant that should never happen, but feasibly could in + // the future if we implement resuming, or some form of that. + error('Internal error: Expected work-in-progress queue to be a clone. ' + 'This is a bug in React.'); + } + } + + current.baseQueue = baseQueue = pendingQueue; + queue.pending = null; + } + + var baseState = hook.baseState; + + if (baseQueue === null) { + // If there are no pending updates, then the memoized state should be the + // same as the base state. Currently these only diverge in the case of + // useOptimistic, because useOptimistic accepts a new baseState on + // every render. + hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because + // baseState is derived from other reactive values. + } else { + // We have a queue to process. + var first = baseQueue.next; + var newState = baseState; + var newBaseState = null; + var newBaseQueueFirst = null; + var newBaseQueueLast = null; + var update = first; + var didReadFromEntangledAsyncAction = false; + + do { + // An extra OffscreenLane bit is added to updates that were made to + // a hidden tree, so that we can distinguish them from updates that were + // already there when the tree was hidden. + var updateLane = removeLanes(update.lane, OffscreenLane); + var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then + // it's not a "base" update and we should disregard the extra base lanes + // that were added to renderLanes when we entered the Offscreen tree. + + var shouldSkipUpdate = isHiddenUpdate ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) : !isSubsetOfLanes(renderLanes, updateLane); + + if (shouldSkipUpdate) { + // Priority is insufficient. Skip this update. If this is the first + // skipped update, the previous update/state is the new base + // update/state. + var clone = { + lane: updateLane, + revertLane: update.revertLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; - return firstChildFiber; - } + if (newBaseQueueLast === null) { + newBaseQueueFirst = newBaseQueueLast = clone; + newBaseState = newState; + } else { + newBaseQueueLast = newBaseQueueLast.next = clone; + } // Update the remaining priority in the queue. + // TODO: Don't need to accumulate this. Instead, we can remove + // renderLanes from the original lanes. - return reconcileChildFibers; - } - var reconcileChildFibers = createChildReconciler(true); - var mountChildFibers = createChildReconciler(false); - function resetChildReconcilerOnUnwind() { - // On unwind, clear any pending thenables that were used. - thenableState$1 = null; - thenableIndexCounter$1 = 0; - } - function cloneChildFibers(current, workInProgress) { - if (current !== null && workInProgress.child !== current.child) { - throw new Error("Resuming work not yet implemented."); - } + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, updateLane); + markSkippedUpdateLanes(updateLane); + } else { + // This update does have sufficient priority. + // Check if this is an optimistic update. + var revertLane = update.revertLane; + + if (!enableAsyncActions || revertLane === NoLane) { + // This is not an optimistic update, and we're going to apply it now. + // But, if there were earlier updates that were skipped, we need to + // leave this update in the queue so it can be rebased later. + if (newBaseQueueLast !== null) { + var _clone = { + // This update is going to be committed so we never want uncommit + // it. Using NoLane works because 0 is a subset of all bitmasks, so + // this will never be skipped by the check above. + lane: NoLane, + revertLane: NoLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; + newBaseQueueLast = newBaseQueueLast.next = _clone; + } // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. - if (workInProgress.child === null) { - return; - } - var currentChild = workInProgress.child; - var newChild = createWorkInProgress( - currentChild, - currentChild.pendingProps - ); - workInProgress.child = newChild; - newChild.return = workInProgress; + if (updateLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } + } else { + // This is an optimistic update. If the "revert" priority is + // sufficient, don't apply the update. Otherwise, apply the update, + // but leave it in the queue so it can be either reverted or + // rebased in a subsequent render. + if (isSubsetOfLanes(renderLanes, revertLane)) { + // The transition that this optimistic update is associated with + // has finished. Pretend the update doesn't exist by skipping + // over it. + update = update.next; // Check if this update is part of a pending async action. If so, + // we'll need to suspend until the action has finished, so that it's + // batched together with future updates in the same action. - while (currentChild.sibling !== null) { - currentChild = currentChild.sibling; - newChild = newChild.sibling = createWorkInProgress( - currentChild, - currentChild.pendingProps - ); - newChild.return = workInProgress; - } + if (revertLane === peekEntangledActionLane()) { + didReadFromEntangledAsyncAction = true; + } - newChild.sibling = null; - } // Reset a workInProgress child set to prepare it for a second pass. + continue; + } else { + var _clone2 = { + // Once we commit an optimistic update, we shouldn't uncommit it + // until the transition it is associated with has finished + // (represented by revertLane). Using NoLane here works because 0 + // is a subset of all bitmasks, so this will never be skipped by + // the check above. + lane: NoLane, + // Reuse the same revertLane so we know when the transition + // has finished. + revertLane: update.revertLane, + action: update.action, + hasEagerState: update.hasEagerState, + eagerState: update.eagerState, + next: null + }; - function resetChildFibers(workInProgress, lanes) { - var child = workInProgress.child; + if (newBaseQueueLast === null) { + newBaseQueueFirst = newBaseQueueLast = _clone2; + newBaseState = newState; + } else { + newBaseQueueLast = newBaseQueueLast.next = _clone2; + } // Update the remaining priority in the queue. + // TODO: Don't need to accumulate this. Instead, we can remove + // renderLanes from the original lanes. - while (child !== null) { - resetWorkInProgress(child, lanes); - child = child.sibling; - } - } - // TODO: This isn't being used yet, but it's intended to replace the - // InvisibleParentContext that is currently managed by SuspenseContext. + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, revertLane); + markSkippedUpdateLanes(revertLane); + } + } // Process this update. - var currentTreeHiddenStackCursor = createCursor(null); - var prevEntangledRenderLanesCursor = createCursor(NoLanes); - function pushHiddenContext(fiber, context) { - var prevEntangledRenderLanes = getEntangledRenderLanes(); - push(prevEntangledRenderLanesCursor, prevEntangledRenderLanes, fiber); - push(currentTreeHiddenStackCursor, context, fiber); // When rendering a subtree that's currently hidden, we must include all - // lanes that would have rendered if the hidden subtree hadn't been deferred. - // That is, in order to reveal content from hidden -> visible, we must commit - // all the updates that we skipped when we originally hid the tree. - setEntangledRenderLanes( - mergeLanes(prevEntangledRenderLanes, context.baseLanes) - ); - } - function reuseHiddenContextOnStack(fiber) { - // This subtree is not currently hidden, so we don't need to add any lanes - // to the render lanes. But we still need to push something to avoid a - // context mismatch. Reuse the existing context on the stack. - push(prevEntangledRenderLanesCursor, getEntangledRenderLanes(), fiber); - push( - currentTreeHiddenStackCursor, - currentTreeHiddenStackCursor.current, - fiber - ); - } - function popHiddenContext(fiber) { - // Restore the previous render lanes from the stack - setEntangledRenderLanes(prevEntangledRenderLanesCursor.current); - pop(currentTreeHiddenStackCursor, fiber); - pop(prevEntangledRenderLanesCursor, fiber); - } - function isCurrentTreeHidden() { - return currentTreeHiddenStackCursor.current !== null; - } + var action = update.action; - // suspends, i.e. it's the nearest `catch` block on the stack. + if (shouldDoubleInvokeUserFnsInHooksDEV) { + reducer(newState, action); + } - var suspenseHandlerStackCursor = createCursor(null); // Represents the outermost boundary that is not visible in the current tree. - // Everything above this is the "shell". When this is null, it means we're - // rendering in the shell of the app. If it's non-null, it means we're rendering - // deeper than the shell, inside a new tree that wasn't already visible. - // - // The main way we use this concept is to determine whether showing a fallback - // would result in a desirable or undesirable loading state. Activing a fallback - // in the shell is considered an undersirable loading state, because it would - // mean hiding visible (albeit stale) content in the current tree — we prefer to - // show the stale content, rather than switch to a fallback. But showing a - // fallback in a new tree is fine, because there's no stale content to - // prefer instead. - - var shellBoundary = null; - function getShellBoundary() { - return shellBoundary; - } - function pushPrimaryTreeSuspenseHandler(handler) { - // TODO: Pass as argument - var current = handler.alternate; - // propagated a single level. For example, when ForceSuspenseFallback is set, - // it should only force the nearest Suspense boundary into fallback mode. - - pushSuspenseListContext( - handler, - setDefaultShallowSuspenseListContext(suspenseStackCursor.current) - ); // Experimental feature: Some Suspense boundaries are marked as having an - // to push a nested Suspense handler, because it will get replaced by the - // outer fallback, anyway. Consider this as a future optimization. - - push(suspenseHandlerStackCursor, handler, handler); - - if (shellBoundary === null) { - if (current === null || isCurrentTreeHidden()) { - // This boundary is not visible in the current UI. - shellBoundary = handler; + if (update.hasEagerState) { + // If this update is a state update (not a reducer) and was processed eagerly, + // we can use the eagerly computed state + newState = update.eagerState; } else { - var prevState = current.memoizedState; - - if (prevState !== null) { - // This boundary is showing a fallback in the current UI. - shellBoundary = handler; - } + newState = reducer(newState, action); } } - } - function pushFallbackTreeSuspenseHandler(fiber) { - // We're about to render the fallback. If something in the fallback suspends, - // it's akin to throwing inside of a `catch` block. This boundary should not - // capture. Reuse the existing handler on the stack. - reuseSuspenseHandlerOnStack(fiber); - } - function pushOffscreenSuspenseHandler(fiber) { - if (fiber.tag === OffscreenComponent) { - // A SuspenseList context is only pushed here to avoid a push/pop mismatch. - // Reuse the current value on the stack. - // TODO: We can avoid needing to push here by by forking popSuspenseHandler - // into separate functions for Suspense and Offscreen. - pushSuspenseListContext(fiber, suspenseStackCursor.current); - push(suspenseHandlerStackCursor, fiber, fiber); - if (shellBoundary !== null); - else { - var current = fiber.alternate; + update = update.next; + } while (update !== null && update !== first); - if (current !== null) { - var prevState = current.memoizedState; + if (newBaseQueueLast === null) { + newBaseState = newState; + } else { + newBaseQueueLast.next = newBaseQueueFirst; + } // Mark that the fiber performed work, but only if the new state is + // different from the current state. - if (prevState !== null) { - // This is the first boundary in the stack that's already showing - // a fallback. So everything outside is considered the shell. - shellBoundary = fiber; - } - } + + if (!objectIs(newState, hook.memoizedState)) { + markWorkInProgressReceivedUpdate(); // Check if this update is part of a pending async action. If so, we'll + // need to suspend until the action has finished, so that it's batched + // together with future updates in the same action. + // TODO: Once we support hooks inside useMemo (or an equivalent + // memoization boundary like Forget), hoist this logic so that it only + // suspends if the memo boundary produces a new value. + + if (didReadFromEntangledAsyncAction) { + var entangledActionThenable = peekEntangledActionThenable(); + + if (entangledActionThenable !== null) { + // TODO: Instead of the throwing the thenable directly, throw a + // special object like `use` does so we can detect if it's captured + // by userspace. + throw entangledActionThenable; } - } else { - // This is a LegacyHidden component. - reuseSuspenseHandlerOnStack(fiber); } } - function reuseSuspenseHandlerOnStack(fiber) { - pushSuspenseListContext(fiber, suspenseStackCursor.current); - push(suspenseHandlerStackCursor, getSuspenseHandler(), fiber); - } - function getSuspenseHandler() { - return suspenseHandlerStackCursor.current; - } - function popSuspenseHandler(fiber) { - pop(suspenseHandlerStackCursor, fiber); - - if (shellBoundary === fiber) { - // Popping back into the shell. - shellBoundary = null; - } - popSuspenseListContext(fiber); - } // SuspenseList context - // TODO: Move to a separate module? We may change the SuspenseList - // implementation to hide/show in the commit phase, anyway. + hook.memoizedState = newState; + hook.baseState = newBaseState; + hook.baseQueue = newBaseQueueLast; + queue.lastRenderedState = newState; + } - var DefaultSuspenseContext = 0; - var SubtreeSuspenseContextMask = 1; // ForceSuspenseFallback can be used by SuspenseList to force newly added - // items into their fallback state during one of the render passes. + if (baseQueue === null) { + // `queue.lanes` is used for entangling transitions. We can set it back to + // zero once the queue is empty. + queue.lanes = NoLanes; + } - var ForceSuspenseFallback = 2; - var suspenseStackCursor = createCursor(DefaultSuspenseContext); - function hasSuspenseListContext(parentContext, flag) { - return (parentContext & flag) !== 0; - } - function setDefaultShallowSuspenseListContext(parentContext) { - return parentContext & SubtreeSuspenseContextMask; - } - function setShallowSuspenseListContext(parentContext, shallowContext) { - return (parentContext & SubtreeSuspenseContextMask) | shallowContext; - } - function pushSuspenseListContext(fiber, newContext) { - push(suspenseStackCursor, newContext, fiber); - } - function popSuspenseListContext(fiber) { - pop(suspenseStackCursor, fiber); - } + var dispatch = queue.dispatch; + return [hook.memoizedState, dispatch]; +} - // A non-null SuspenseState means that it is blocked for one reason or another. - // - A non-null dehydrated field means it's blocked pending hydration. - // - A non-null dehydrated field can use isSuspenseInstancePending or - // isSuspenseInstanceFallback to query the reason for being dehydrated. - // - A null dehydrated field means it's blocked by something suspending and - // we're currently showing a fallback instead. +function rerenderReducer(reducer, initialArg, init) { + var hook = updateWorkInProgressHook(); + var queue = hook.queue; - function findFirstSuspended(row) { - var node = row; + if (queue === null) { + throw new Error('Should have a queue. This is likely a bug in React. Please file an issue.'); + } - while (node !== null) { - if (node.tag === SuspenseComponent) { - var state = node.memoizedState; + queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous + // work-in-progress hook. - if (state !== null) { - var dehydrated = state.dehydrated; + var dispatch = queue.dispatch; + var lastRenderPhaseUpdate = queue.pending; + var newState = hook.memoizedState; - if ( - dehydrated === null || - isSuspenseInstancePending() || - isSuspenseInstanceFallback() - ) { - return node; - } - } - } else if ( - node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't - // keep track of whether it suspended or not. - node.memoizedProps.revealOrder !== undefined - ) { - var didSuspend = (node.flags & DidCapture) !== NoFlags$1; - - if (didSuspend) { - return node; - } - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + if (lastRenderPhaseUpdate !== null) { + // The queue doesn't persist past this render pass. + queue.pending = null; + var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next; + var update = firstRenderPhaseUpdate; - if (node === row) { - return null; - } + do { + // Process this render phase update. We don't have to check the + // priority because it will always be the same as the current + // render's. + var action = update.action; + newState = reducer(newState, action); + update = update.next; + } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is + // different from the current state. - while (node.sibling === null) { - if (node.return === null || node.return === row) { - return null; - } - node = node.return; - } + if (!objectIs(newState, hook.memoizedState)) { + markWorkInProgressReceivedUpdate(); + } - node.sibling.return = node.return; - node = node.sibling; - } + hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to + // the base state unless the queue is empty. + // TODO: Not sure if this is the desired semantics, but it's what we + // do for gDSFP. I can't remember why. - return null; + if (hook.baseQueue === null) { + hook.baseState = newState; } - var NoFlags = - /* */ - 0; // Represents whether effect should fire. + queue.lastRenderedState = newState; + } - var HasEffect = - /* */ - 1; // Represents the phase in which the effect (not the clean-up) fires. + return [newState, dispatch]; +} - var Insertion = - /* */ - 2; - var Layout = - /* */ - 4; - var Passive = - /* */ - 8; +function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { + var fiber = currentlyRenderingFiber$1; + var hook = mountWorkInProgressHook(); + var nextSnapshot; - var didWarnAboutMismatchedHooksForComponent; - var didWarnUncachedGetSnapshot; - var didWarnAboutUseWrappedInTryCatch; - var didWarnAboutAsyncClientComponent; - var didWarnAboutUseFormState; + { + nextSnapshot = getSnapshot(); { - didWarnAboutMismatchedHooksForComponent = new Set(); - didWarnAboutUseWrappedInTryCatch = new Set(); - didWarnAboutAsyncClientComponent = new Set(); - didWarnAboutUseFormState = new Set(); - } // The effect "instance" is a shared object that remains the same for the entire - // lifetime of an effect. In Rust terms, a RefCell. We use it to store the - // "destroy" function that is returned from an effect, because that is stateful. - // The field is `undefined` if the effect is unmounted, or if the effect ran - // but is not stateful. We don't explicitly track whether the effect is mounted - // or unmounted because that can be inferred by the hiddenness of the fiber in - // the tree, i.e. whether there is a hidden Offscreen fiber above it. - // - // It's unfortunate that this is stored on a separate object, because it adds - // more memory per effect instance, but it's conceptually sound. I think there's - // likely a better data structure we could use for effects; perhaps just one - // array of effect instances per fiber. But I think this is OK for now despite - // the additional memory and we can follow up with performance - // optimizations later. - // These are set right before calling the component. - - var renderLanes = NoLanes; // The work-in-progress fiber. I've named it differently to distinguish it from - // the work-in-progress hook. - - var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The - // current hook list is the list that belongs to the current fiber. The - // work-in-progress hook list is a new list that will be added to the - // work-in-progress fiber. - - var currentHook = null; - var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This - // does not get reset if we do another render pass; only when we're completely - // finished evaluating this component. This is an optimization so we know - // whether we need to clear render phase updates after a throw. - - var didScheduleRenderPhaseUpdate = false; // Where an update was scheduled only during the current render pass. This - // gets reset after each attempt. - // TODO: Maybe there's some way to consolidate this with - // `didScheduleRenderPhaseUpdate`. Or with `numberOfReRenders`. - - var didScheduleRenderPhaseUpdateDuringThisPass = false; - var shouldDoubleInvokeUserFnsInHooksDEV = false; // Counts the number of useId hooks in this component. - - var thenableIndexCounter = 0; - var thenableState = null; // Used for ids that are generated completely client-side (i.e. not during - // hydration). This counter is global, so client ids are not stable across - // render attempts. - - var globalClientIdCounter = 0; - var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook - - var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders. - // The list stores the order of hooks used during the initial render (mount). - // Subsequent renders (updates) reference this list. - - var hookTypesDev = null; - var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore - // the dependencies for Hooks that need them (e.g. useEffect or useMemo). - // When true, such Hooks will always be "remounted". Only used during hot reload. - - var ignorePreviousDependencies = false; - - function mountHookTypesDev() { - { - var hookName = currentHookNameInDev; + if (!didWarnUncachedGetSnapshot) { + var cachedSnapshot = getSnapshot(); - if (hookTypesDev === null) { - hookTypesDev = [hookName]; - } else { - hookTypesDev.push(hookName); + if (!objectIs(nextSnapshot, cachedSnapshot)) { + error('The result of getSnapshot should be cached to avoid an infinite loop'); + + didWarnUncachedGetSnapshot = true; } } - } + } // Unless we're rendering a blocking lane, schedule a consistency check. + // Right before committing, we will walk the tree and check if any of the + // stores were mutated. + // + // We won't do this if we're hydrating server-rendered content, because if + // the content is stale, it's already visible anyway. Instead we'll patch + // it up in a passive effect. - function updateHookTypesDev() { - { - var hookName = currentHookNameInDev; - if (hookTypesDev !== null) { - hookTypesUpdateIndexDev++; + var root = getWorkInProgressRoot(); - if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) { - warnOnHookMismatchInDev(hookName); - } - } - } + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } - function checkDepsAreArrayDev(deps) { - { - if (deps !== undefined && deps !== null && !isArray(deps)) { - // Verify deps, but only on mount to avoid extra checks. - // It's unlikely their type would change as usually you define them inline. - error( - "%s received a final argument that is not an array (instead, received `%s`). When " + - "specified, the final argument must be an array.", - currentHookNameInDev, - typeof deps - ); - } - } + var rootRenderLanes = getWorkInProgressRootRenderLanes(); + + if (!includesBlockingLane(root, rootRenderLanes)) { + pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); } + } // Read the current snapshot from the store on every render. This breaks the + // normal rules of React, and only works because store updates are + // always synchronous. - function warnOnHookMismatchInDev(currentHookName) { - { - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); - - if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) { - didWarnAboutMismatchedHooksForComponent.add(componentName); - - if (hookTypesDev !== null) { - var table = ""; - var secondColumnStart = 30; - - for (var i = 0; i <= hookTypesUpdateIndexDev; i++) { - var oldHookName = hookTypesDev[i]; - var newHookName = - i === hookTypesUpdateIndexDev ? currentHookName : oldHookName; - var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up - // lol @ IE not supporting String#repeat - - while (row.length < secondColumnStart) { - row += " "; - } - row += newHookName + "\n"; - table += row; - } + hook.memoizedState = nextSnapshot; + var inst = { + value: nextSnapshot, + getSnapshot: getSnapshot + }; + hook.queue = inst; // Schedule an effect to subscribe to the store. - error( - "React has detected a change in the order of Hooks called by %s. " + - "This will lead to bugs and errors if not fixed. " + - "For more information, read the Rules of Hooks: https://react.dev/link/rules-of-hooks\n\n" + - " Previous render Next render\n" + - " ------------------------------------------------------\n" + - "%s" + - " ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n", - componentName, - table - ); - } - } - } - } + mountEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [subscribe]); // Schedule an effect to update the mutable instance fields. We will update + // this whenever subscribe, getSnapshot, or value changes. Because there's no + // clean-up function, and we track the deps correctly, we can call pushEffect + // directly, without storing any additional state. For the same reason, we + // don't need to set a static flag, either. - function warnOnUseFormStateInDev() { - { - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); + fiber.flags |= Passive$1; + pushEffect(HasEffect | Passive, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), createEffectInstance(), null); + return nextSnapshot; +} - if (!didWarnAboutUseFormState.has(componentName)) { - didWarnAboutUseFormState.add(componentName); +function updateSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { + var fiber = currentlyRenderingFiber$1; + var hook = updateWorkInProgressHook(); // Read the current snapshot from the store on every render. This breaks the + // normal rules of React, and only works because store updates are + // always synchronous. - error( - "ReactDOM.useFormState has been renamed to React.useActionState. " + - "Please update %s to use React.useActionState.", - componentName - ); - } - } - } + var nextSnapshot; - function warnIfAsyncClientComponent(Component) { - { - // This dev-only check only works for detecting native async functions, - // not transpiled ones. There's also a prod check that we use to prevent - // async client components from crashing the app; the prod one works even - // for transpiled async functions. Neither mechanism is completely - // bulletproof but together they cover the most common cases. - var isAsyncFunction = // $FlowIgnore[method-unbinding] - Object.prototype.toString.call(Component) === - "[object AsyncFunction]"; - - if (isAsyncFunction) { - // Encountered an async Client Component. This is not yet supported. - var componentName = getComponentNameFromFiber( - currentlyRenderingFiber$1 - ); - - if (!didWarnAboutAsyncClientComponent.has(componentName)) { - didWarnAboutAsyncClientComponent.add(componentName); - - error( - "async/await is not yet supported in Client Components, only " + - "Server Components. This error is often caused by accidentally " + - "adding `'use client'` to a module that was originally written " + - "for the server." - ); - } - } - } - } + { + nextSnapshot = getSnapshot(); - function throwInvalidHookError() { - throw new Error( - "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for" + - " one of the following reasons:\n" + - "1. You might have mismatching versions of React and the renderer (such as React DOM)\n" + - "2. You might be breaking the Rules of Hooks\n" + - "3. You might have more than one copy of React in the same app\n" + - "See https://react.dev/link/invalid-hook-call for tips about how to debug and fix this problem." - ); - } + { + if (!didWarnUncachedGetSnapshot) { + var cachedSnapshot = getSnapshot(); - function areHookInputsEqual(nextDeps, prevDeps) { - { - if (ignorePreviousDependencies) { - // Only true when this component is being hot reloaded. - return false; + if (!objectIs(nextSnapshot, cachedSnapshot)) { + error('The result of getSnapshot should be cached to avoid an infinite loop'); + + didWarnUncachedGetSnapshot = true; } } + } + } - if (prevDeps === null) { - { - error( - "%s received a final argument during this render, but not during " + - "the previous render. Even though the final argument is optional, " + - "its type cannot change between renders.", - currentHookNameInDev - ); - } + var prevSnapshot = (currentHook || hook).memoizedState; + var snapshotChanged = !objectIs(prevSnapshot, nextSnapshot); - return false; - } + if (snapshotChanged) { + hook.memoizedState = nextSnapshot; + markWorkInProgressReceivedUpdate(); + } - { - // Don't bother comparing lengths in prod because these arrays should be - // passed inline. - if (nextDeps.length !== prevDeps.length) { - error( - "The final argument passed to %s changed size between renders. The " + - "order and size of this array must remain constant.\n\n" + - "Previous: %s\n" + - "Incoming: %s", - currentHookNameInDev, - "[" + prevDeps.join(", ") + "]", - "[" + nextDeps.join(", ") + "]" - ); - } - } // $FlowFixMe[incompatible-use] found when upgrading Flow + var inst = hook.queue; + updateEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [subscribe]); // Whenever getSnapshot or subscribe changes, we need to check in the + // commit phase if there was an interleaved mutation. In concurrent mode + // this can happen all the time, but even in synchronous mode, an earlier + // effect may have mutated the store. - for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (objectIs(nextDeps[i], prevDeps[i])) { - continue; - } + if (inst.getSnapshot !== getSnapshot || snapshotChanged || // Check if the subscribe function changed. We can save some memory by + // checking whether we scheduled a subscription effect above. + workInProgressHook !== null && workInProgressHook.memoizedState.tag & HasEffect) { + fiber.flags |= Passive$1; + pushEffect(HasEffect | Passive, updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), createEffectInstance(), null); // Unless we're rendering a blocking lane, schedule a consistency check. + // Right before committing, we will walk the tree and check if any of the + // stores were mutated. - return false; - } + var root = getWorkInProgressRoot(); - return true; + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } - function renderWithHooks( - current, - workInProgress, - Component, - props, - secondArg, - nextRenderLanes - ) { - renderLanes = nextRenderLanes; - currentlyRenderingFiber$1 = workInProgress; + if (!includesBlockingLane(root, renderLanes)) { + pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); + } + } - { - hookTypesDev = current !== null ? current._debugHookTypes : null; - hookTypesUpdateIndexDev = -1; // Used for hot reloading: + return nextSnapshot; +} - ignorePreviousDependencies = - current !== null && current.type !== workInProgress.type; - warnIfAsyncClientComponent(Component); - } +function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) { + fiber.flags |= StoreConsistency; + var check = { + getSnapshot: getSnapshot, + value: renderedSnapshot + }; + var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + + if (componentUpdateQueue === null) { + componentUpdateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; + componentUpdateQueue.stores = [check]; + } else { + var stores = componentUpdateQueue.stores; + + if (stores === null) { + componentUpdateQueue.stores = [check]; + } else { + stores.push(check); + } + } +} - workInProgress.memoizedState = null; - workInProgress.updateQueue = null; - workInProgress.lanes = NoLanes; // The following should have already been reset - // currentHook = null; - // workInProgressHook = null; - // didScheduleRenderPhaseUpdate = false; - // localIdCounter = 0; - // thenableIndexCounter = 0; - // thenableState = null; - // TODO Warn if no hooks are used at all during mount, then some are used during update. - // Currently we will identify the update render as a mount because memoizedState === null. - // This is tricky because it's valid for certain types of components (e.g. React.lazy) - // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used. - // Non-stateful hooks (e.g. context) don't get added to memoizedState, - // so memoizedState would be null during updates and mounts. +function updateStoreInstance(fiber, inst, nextSnapshot, getSnapshot) { + // These are updated in the passive phase + inst.value = nextSnapshot; + inst.getSnapshot = getSnapshot; // Something may have been mutated in between render and commit. This could + // have been in an event that fired before the passive effects, or it could + // have been in a layout effect. In that case, we would have used the old + // snapsho and getSnapshot values to bail out. We need to check one more time. + + if (checkIfSnapshotChanged(inst)) { + // Force a re-render. + forceStoreRerender(fiber); + } +} - { - if (current !== null && current.memoizedState !== null) { - ReactSharedInternals.H = HooksDispatcherOnUpdateInDEV; - } else if (hookTypesDev !== null) { - // This dispatcher handles an edge case where a component is updating, - // but no stateful hooks have been used. - // We want to match the production code behavior (which will use HooksDispatcherOnMount), - // but with the extra DEV validation to ensure hooks ordering hasn't changed. - // This dispatcher does that. - ReactSharedInternals.H = HooksDispatcherOnMountWithHookTypesInDEV; - } else { - ReactSharedInternals.H = HooksDispatcherOnMountInDEV; - } - } // In Strict Mode, during development, user functions are double invoked to - // help detect side effects. The logic for how this is implemented for in - // hook components is a bit complex so let's break it down. - // - // We will invoke the entire component function twice. However, during the - // second invocation of the component, the hook state from the first - // invocation will be reused. That means things like `useMemo` functions won't - // run again, because the deps will match and the memoized result will - // be reused. - // - // We want memoized functions to run twice, too, so account for this, user - // functions are double invoked during the *first* invocation of the component - // function, and are *not* double invoked during the second incovation: - // - // - First execution of component function: user functions are double invoked - // - Second execution of component function (in Strict Mode, during - // development): user functions are not double invoked. - // - // This is intentional for a few reasons; most importantly, it's because of - // how `use` works when something suspends: it reuses the promise that was - // passed during the first attempt. This is itself a form of memoization. - // We need to be able to memoize the reactive inputs to the `use` call using - // a hook (i.e. `useMemo`), which means, the reactive inputs to `use` must - // come from the same component invocation as the output. - // - // There are plenty of tests to ensure this behavior is correct. - - var shouldDoubleRenderDEV = - (workInProgress.mode & StrictLegacyMode) !== NoMode; - shouldDoubleInvokeUserFnsInHooksDEV = shouldDoubleRenderDEV; - var children = Component(props, secondArg); - shouldDoubleInvokeUserFnsInHooksDEV = false; // Check if there was a render phase update - - if (didScheduleRenderPhaseUpdateDuringThisPass) { - // Keep rendering until the component stabilizes (there are no more render - // phase updates). - children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); - } - - if (shouldDoubleRenderDEV) { - // In development, components are invoked twice to help detect side effects. - setIsStrictModeForDevtools(true); +function subscribeToStore(fiber, inst, subscribe) { + var handleStoreChange = function () { + // The store changed. Check if the snapshot changed since the last time we + // read from the store. + if (checkIfSnapshotChanged(inst)) { + // Force a re-render. + forceStoreRerender(fiber); + } + }; // Subscribe to the store and return a clean-up function. - try { - children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); - } finally { - setIsStrictModeForDevtools(false); - } - } - finishRenderingHooks(current, workInProgress); - return children; - } + return subscribe(handleStoreChange); +} - function finishRenderingHooks(current, workInProgress, Component) { - { - workInProgress._debugHookTypes = hookTypesDev; - } // We can assume the previous dispatcher is always this one, since we set it - // at the beginning of the render phase and there's no re-entrance. +function checkIfSnapshotChanged(inst) { + var latestGetSnapshot = inst.getSnapshot; + var prevValue = inst.value; - ReactSharedInternals.H = ContextOnlyDispatcher; // This check uses currentHook so that it works the same in DEV and prod bundles. - // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles. + try { + var nextValue = latestGetSnapshot(); + return !objectIs(prevValue, nextValue); + } catch (error) { + return true; + } +} - var didRenderTooFewHooks = - currentHook !== null && currentHook.next !== null; - renderLanes = NoLanes; - currentlyRenderingFiber$1 = null; - currentHook = null; - workInProgressHook = null; +function forceStoreRerender(fiber) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - { - currentHookNameInDev = null; - hookTypesDev = null; - hookTypesUpdateIndexDev = -1; // Confirm that a static flag was not added or removed since the last - // render. If this fires, it suggests that we incorrectly reset the static - // flags in some other part of the codebase. This has happened before, for - // example, in the SuspenseList implementation. - - if ( - current !== null && - (current.flags & StaticMask) !== - (workInProgress.flags & StaticMask) && // Disable this warning in legacy mode, because legacy Suspense is weird - // and creates false positives. To make this work in legacy mode, we'd - // need to mark fibers that commit in an incomplete state, somehow. For - // now I'll disable the warning that most of the bugs that would trigger - // it are either exclusive to concurrent mode or exist in both. - (current.mode & ConcurrentMode) !== NoMode - ) { - error( - "Internal React error: Expected static flag was missing. Please " + - "notify the React team." - ); - } - } - - didScheduleRenderPhaseUpdate = false; // This is reset by checkDidRenderIdHook - // localIdCounter = 0; - - thenableIndexCounter = 0; - thenableState = null; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} - if (didRenderTooFewHooks) { - throw new Error( - "Rendered fewer hooks than expected. This may be caused by an accidental " + - "early return statement." - ); - } +function mountStateImpl(initialState) { + var hook = mountWorkInProgressHook(); - { - if (checkIfUseWrappedInTryCatch()) { - var componentName = - getComponentNameFromFiber(workInProgress) || "Unknown"; - - if ( - !didWarnAboutUseWrappedInTryCatch.has(componentName) && // This warning also fires if you suspend with `use` inside an - // async component. Since we warn for that above, we'll silence this - // second warning by checking here. - !didWarnAboutAsyncClientComponent.has(componentName) - ) { - didWarnAboutUseWrappedInTryCatch.add(componentName); - - error( - "`use` was called from inside a try/catch block. This is not allowed " + - "and can lead to unexpected behavior. To handle errors triggered " + - "by `use`, wrap your component in a error boundary." - ); - } - } - } - } + if (typeof initialState === 'function') { + var initialStateInitializer = initialState; // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - function replaySuspendedComponentWithHooks( - current, - workInProgress, - Component, - props, - secondArg - ) { - // This function is used to replay a component that previously suspended, - // after its data resolves. - // - // It's a simplified version of renderWithHooks, but it doesn't need to do - // most of the set up work because they weren't reset when we suspended; they - // only get reset when the component either completes (finishRenderingHooks) - // or unwinds (resetHooksOnUnwind). - { - hookTypesUpdateIndexDev = -1; // Used for hot reloading: + initialState = initialStateInitializer(); - ignorePreviousDependencies = - current !== null && current.type !== workInProgress.type; - } + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - var children = renderWithHooksAgain( - workInProgress, - Component, - props, - secondArg - ); - finishRenderingHooks(current, workInProgress); - return children; + initialStateInitializer(); + setIsStrictModeForDevtools(false); } + } - function renderWithHooksAgain(workInProgress, Component, props, secondArg) { - // This is used to perform another render pass. It's used when setState is - // called during render, and for double invoking components in Strict Mode - // during development. - // - // The state from the previous pass is reused whenever possible. So, state - // updates that were already processed are not processed again, and memoized - // functions (`useMemo`) are not invoked again. - // - // Keep rendering in a loop for as long as render phase updates continue to - // be scheduled. Use a counter to prevent infinite loops. - currentlyRenderingFiber$1 = workInProgress; - var numberOfReRenders = 0; - var children; + hook.memoizedState = hook.baseState = initialState; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: basicStateReducer, + lastRenderedState: initialState + }; + hook.queue = queue; + return hook; +} - do { - if (didScheduleRenderPhaseUpdateDuringThisPass) { - // It's possible that a use() value depended on a state that was updated in - // this rerender, so we need to watch for different thenables this time. - thenableState = null; - } +function mountState(initialState) { + var hook = mountStateImpl(initialState); + var queue = hook.queue; + var dispatch = dispatchSetState.bind(null, currentlyRenderingFiber$1, queue); + queue.dispatch = dispatch; + return [hook.memoizedState, dispatch]; +} - thenableIndexCounter = 0; - didScheduleRenderPhaseUpdateDuringThisPass = false; +function updateState(initialState) { + return updateReducer(basicStateReducer); +} - if (numberOfReRenders >= RE_RENDER_LIMIT) { - throw new Error( - "Too many re-renders. React limits the number of renders to prevent " + - "an infinite loop." - ); - } +function rerenderState(initialState) { + return rerenderReducer(basicStateReducer); +} - numberOfReRenders += 1; +function mountOptimistic(passthrough, reducer) { + var hook = mountWorkInProgressHook(); + hook.memoizedState = hook.baseState = passthrough; + var queue = { + pending: null, + lanes: NoLanes, + dispatch: null, + // Optimistic state does not use the eager update optimization. + lastRenderedReducer: null, + lastRenderedState: null + }; + hook.queue = queue; // This is different than the normal setState function. + + var dispatch = dispatchOptimisticSetState.bind(null, currentlyRenderingFiber$1, true, queue); + queue.dispatch = dispatch; + return [passthrough, dispatch]; +} - { - // Even when hot reloading, allow dependencies to stabilize - // after first render to prevent infinite render phase updates. - ignorePreviousDependencies = false; - } // Start over from the beginning of the list +function updateOptimistic(passthrough, reducer) { + var hook = updateWorkInProgressHook(); + return updateOptimisticImpl(hook, currentHook, passthrough, reducer); +} - currentHook = null; - workInProgressHook = null; - workInProgress.updateQueue = null; +function updateOptimisticImpl(hook, current, passthrough, reducer) { + // Optimistic updates are always rebased on top of the latest value passed in + // as an argument. It's called a passthrough because if there are no pending + // updates, it will be returned as-is. + // + // Reset the base state to the passthrough. Future updates will be applied + // on top of this. + hook.baseState = passthrough; // If a reducer is not provided, default to the same one used by useState. + + var resolvedReducer = typeof reducer === 'function' ? reducer : basicStateReducer; + return updateReducerImpl(hook, currentHook, resolvedReducer); +} - { - // Also validate hook order for cascading updates. - hookTypesUpdateIndexDev = -1; - } +function rerenderOptimistic(passthrough, reducer) { + // Unlike useState, useOptimistic doesn't support render phase updates. + // Also unlike useState, we need to replay all pending updates again in case + // the passthrough value changed. + // + // So instead of a forked re-render implementation that knows how to handle + // render phase udpates, we can use the same implementation as during a + // regular mount or update. + var hook = updateWorkInProgressHook(); + + if (currentHook !== null) { + // This is an update. Process the update queue. + return updateOptimisticImpl(hook, currentHook, passthrough, reducer); + } // This is a mount. No updates to process. + // Reset the base state to the passthrough. Future updates will be applied + // on top of this. + + + hook.baseState = passthrough; + var dispatch = hook.queue.dispatch; + return [passthrough, dispatch]; +} // useActionState actions run sequentially, because each action receives the +// previous state as an argument. We store pending actions on a queue. + + +function dispatchActionState(fiber, actionQueue, setPendingState, setState, payload) { + if (isRenderPhaseUpdate(fiber)) { + throw new Error('Cannot update form state while rendering.'); + } + + var last = actionQueue.pending; + + if (last === null) { + // There are no pending actions; this is the first one. We can run + // it immediately. + var newLast = { + payload: payload, + next: null // circular - ReactSharedInternals.H = HooksDispatcherOnRerenderInDEV; - children = Component(props, secondArg); - } while (didScheduleRenderPhaseUpdateDuringThisPass); + }; + newLast.next = actionQueue.pending = newLast; + runActionStateAction(actionQueue, setPendingState, setState, payload); + } else { + // There's already an action running. Add to the queue. + var first = last.next; + var _newLast = { + payload: payload, + next: first + }; + actionQueue.pending = last.next = _newLast; + } +} - return children; - } +function runActionStateAction(actionQueue, setPendingState, setState, payload) { + var action = actionQueue.action; + var prevState = actionQueue.state; // This is a fork of startTransition - function renderTransitionAwareHostComponentWithHooks( - current, - workInProgress, - lanes - ) { - if (!enableAsyncActions) { - throw new Error("Not implemented."); - } + var prevTransition = ReactSharedInternals.T; + var currentTransition = { + _callbacks: new Set() + }; + ReactSharedInternals.T = currentTransition; - return renderWithHooks( - current, - workInProgress, - TransitionAwareHostComponent, - null, - null, - lanes - ); - } - function TransitionAwareHostComponent() { - if (!enableAsyncActions) { - throw new Error("Not implemented."); - } + { + ReactSharedInternals.T._updatedFibers = new Set(); + } // Optimistically update the pending state, similar to useTransition. + // This will be reverted automatically when all actions are finished. - var dispatcher = ReactSharedInternals.H; - var _dispatcher$useState = dispatcher.useState(), - maybeThenable = _dispatcher$useState[0]; + setPendingState(true); - var nextState; + try { + var returnValue = action(prevState, payload); - if (typeof maybeThenable.then === "function") { - var thenable = maybeThenable; - nextState = useThenable(thenable); - } else { - var status = maybeThenable; - nextState = status; - } // The "reset state" is an object. If it changes, that means something - // requested that we reset the form. + if (returnValue !== null && typeof returnValue === 'object' && // $FlowFixMe[method-unbinding] + typeof returnValue.then === 'function') { + var thenable = returnValue; + notifyTransitionCallbacks(currentTransition, thenable); // Attach a listener to read the return state of the action. As soon as + // this resolves, we can run the next action in the sequence. - var _dispatcher$useState2 = dispatcher.useState(), - nextResetState = _dispatcher$useState2[0]; + thenable.then(function (nextState) { + actionQueue.state = nextState; + finishRunningActionStateAction(actionQueue, setPendingState, setState); + }, function () { + return finishRunningActionStateAction(actionQueue, setPendingState, setState); + }); + setState(thenable); + } else { + setState(returnValue); + var nextState = returnValue; + actionQueue.state = nextState; + finishRunningActionStateAction(actionQueue, setPendingState, setState); + } + } catch (error) { + // This is a trick to get the `useActionState` hook to rethrow the error. + // When it unwraps the thenable with the `use` algorithm, the error + // will be thrown. + var rejectedThenable = { + then: function () {}, + status: 'rejected', + reason: error // $FlowFixMe: Not sure why this doesn't work - var prevResetState = - currentHook !== null ? currentHook.memoizedState : null; + }; + setState(rejectedThenable); + finishRunningActionStateAction(actionQueue, setPendingState, setState); + } finally { + ReactSharedInternals.T = prevTransition; - if (prevResetState !== nextResetState) { - // Schedule a form reset - currentlyRenderingFiber$1.flags |= FormReset; - } + { + if (prevTransition === null && currentTransition._updatedFibers) { + var updatedFibersCount = currentTransition._updatedFibers.size; - return nextState; - } - function bailoutHooks(current, workInProgress, lanes) { - workInProgress.updateQueue = current.updateQueue; // TODO: Don't need to reset the flags here, because they're reset in the - // complete phase (bubbleProperties). + currentTransition._updatedFibers.clear(); - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags &= ~( - MountPassiveDev | - MountLayoutDev | - Passive$1 | - Update - ); - } else { - workInProgress.flags &= ~(Passive$1 | Update); + if (updatedFibersCount > 10) { + warn('Detected a large number of updates inside startTransition. ' + 'If this is due to a subscription please re-write it to use React provided hooks. ' + 'Otherwise concurrent mode guarantees are off the table.'); + } } - - current.lanes = removeLanes(current.lanes, lanes); } - function resetHooksAfterThrow() { - // This is called immediaetly after a throw. It shouldn't reset the entire - // module state, because the work loop might decide to replay the component - // again without rewinding. - // - // It should only reset things like the current dispatcher, to prevent hooks - // from being called outside of a component. - currentlyRenderingFiber$1 = null; // We can assume the previous dispatcher is always this one, since we set it - // at the beginning of the render phase and there's no re-entrance. - - ReactSharedInternals.H = ContextOnlyDispatcher; - } - function resetHooksOnUnwind(workInProgress) { - if (didScheduleRenderPhaseUpdate) { - // There were render phase updates. These are only valid for this render - // phase, which we are now aborting. Remove the updates from the queues so - // they do not persist to the next render. Do not remove updates from hooks - // that weren't processed. - // - // Only reset the updates from the queue if it has a clone. If it does - // not have a clone, that means it wasn't processed, and the updates were - // scheduled before we entered the render phase. - var hook = workInProgress.memoizedState; - - while (hook !== null) { - var queue = hook.queue; - - if (queue !== null) { - queue.pending = null; - } - - hook = hook.next; - } + } +} - didScheduleRenderPhaseUpdate = false; - } +function finishRunningActionStateAction(actionQueue, setPendingState, setState) { + // The action finished running. Pop it from the queue and run the next pending + // action, if there are any. + var last = actionQueue.pending; - renderLanes = NoLanes; - currentlyRenderingFiber$1 = null; - currentHook = null; - workInProgressHook = null; + if (last !== null) { + var first = last.next; - { - hookTypesDev = null; - hookTypesUpdateIndexDev = -1; - currentHookNameInDev = null; - } + if (first === last) { + // This was the last action in the queue. + actionQueue.pending = null; + } else { + // Remove the first node from the circular queue. + var next = first.next; + last.next = next; // Run the next action. - didScheduleRenderPhaseUpdateDuringThisPass = false; - thenableIndexCounter = 0; - thenableState = null; + runActionStateAction(actionQueue, setPendingState, setState, next.payload); } + } +} - function mountWorkInProgressHook() { - var hook = { - memoizedState: null, - baseState: null, - baseQueue: null, - queue: null, - next: null - }; +function actionStateReducer(oldState, newState) { + return newState; +} - if (workInProgressHook === null) { - // This is the first hook in the list - currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook; - } else { - // Append to the end of the list - workInProgressHook = workInProgressHook.next = hook; - } +function mountActionState(action, initialStateProp, permalink) { + var initialState = initialStateProp; + // the `use` algorithm during render. + + + var stateHook = mountWorkInProgressHook(); + stateHook.memoizedState = stateHook.baseState = initialState; // TODO: Typing this "correctly" results in recursion limit errors + // const stateQueue: UpdateQueue, S | Awaited> = { + + var stateQueue = { + pending: null, + lanes: NoLanes, + dispatch: null, + lastRenderedReducer: actionStateReducer, + lastRenderedState: initialState + }; + stateHook.queue = stateQueue; + var setState = dispatchSetState.bind(null, currentlyRenderingFiber$1, stateQueue); + stateQueue.dispatch = setState; // Pending state. This is used to store the pending state of the action. + // Tracked optimistically, like a transition pending state. + + var pendingStateHook = mountStateImpl(false); + var setPendingState = dispatchOptimisticSetState.bind(null, currentlyRenderingFiber$1, false, pendingStateHook.queue); // Action queue hook. This is used to queue pending actions. The queue is + // shared between all instances of the hook. Similar to a regular state queue, + // but different because the actions are run sequentially, and they run in + // an event instead of during render. + + var actionQueueHook = mountWorkInProgressHook(); + var actionQueue = { + state: initialState, + dispatch: null, + // circular + action: action, + pending: null + }; + actionQueueHook.queue = actionQueue; + var dispatch = dispatchActionState.bind(null, currentlyRenderingFiber$1, actionQueue, setPendingState, setState); + actionQueue.dispatch = dispatch; // Stash the action function on the memoized state of the hook. We'll use this + // to detect when the action function changes so we can update it in + // an effect. + + actionQueueHook.memoizedState = action; + return [initialState, dispatch, false]; +} - return workInProgressHook; - } +function updateActionState(action, initialState, permalink) { + var stateHook = updateWorkInProgressHook(); + var currentStateHook = currentHook; + return updateActionStateImpl(stateHook, currentStateHook, action); +} - function updateWorkInProgressHook() { - // This function is used both for updates and for re-renders triggered by a - // render phase update. It assumes there is either a current hook we can - // clone, or a work-in-progress hook from a previous render pass that we can - // use as a base. - var nextCurrentHook; +function updateActionStateImpl(stateHook, currentStateHook, action, initialState, permalink) { + var _updateReducerImpl = updateReducerImpl(stateHook, currentStateHook, actionStateReducer), + actionResult = _updateReducerImpl[0]; - if (currentHook === null) { - var current = currentlyRenderingFiber$1.alternate; + var _updateState = updateState(), + isPending = _updateState[0]; // This will suspend until the action finishes. - if (current !== null) { - nextCurrentHook = current.memoizedState; - } else { - nextCurrentHook = null; - } - } else { - nextCurrentHook = currentHook.next; - } - var nextWorkInProgressHook; + var state = typeof actionResult === 'object' && actionResult !== null && // $FlowFixMe[method-unbinding] + typeof actionResult.then === 'function' ? useThenable(actionResult) : actionResult; + var actionQueueHook = updateWorkInProgressHook(); + var actionQueue = actionQueueHook.queue; + var dispatch = actionQueue.dispatch; // Check if a new action was passed. If so, update it in an effect. - if (workInProgressHook === null) { - nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState; - } else { - nextWorkInProgressHook = workInProgressHook.next; - } + var prevAction = actionQueueHook.memoizedState; - if (nextWorkInProgressHook !== null) { - // There's already a work-in-progress. Reuse it. - workInProgressHook = nextWorkInProgressHook; - nextWorkInProgressHook = workInProgressHook.next; - currentHook = nextCurrentHook; - } else { - // Clone from the current hook. - if (nextCurrentHook === null) { - var currentFiber = currentlyRenderingFiber$1.alternate; - - if (currentFiber === null) { - // This is the initial render. This branch is reached when the component - // suspends, resumes, then renders an additional hook. - // Should never be reached because we should switch to the mount dispatcher first. - throw new Error( - "Update hook called on initial render. This is likely a bug in React. Please file an issue." - ); - } else { - // This is an update. We should always have a current hook. - throw new Error( - "Rendered more hooks than during the previous render." - ); - } - } + if (action !== prevAction) { + currentlyRenderingFiber$1.flags |= Passive$1; + pushEffect(HasEffect | Passive, actionStateActionEffect.bind(null, actionQueue, action), createEffectInstance(), null); + } + + return [state, dispatch, isPending]; +} - currentHook = nextCurrentHook; - var newHook = { - memoizedState: currentHook.memoizedState, - baseState: currentHook.baseState, - baseQueue: currentHook.baseQueue, - queue: currentHook.queue, - next: null - }; +function actionStateActionEffect(actionQueue, action) { + actionQueue.action = action; +} - if (workInProgressHook === null) { - // This is the first hook in the list. - currentlyRenderingFiber$1.memoizedState = workInProgressHook = - newHook; - } else { - // Append to the end of the list. - workInProgressHook = workInProgressHook.next = newHook; - } - } +function rerenderActionState(action, initialState, permalink) { + // Unlike useState, useActionState doesn't support render phase updates. + // Also unlike useState, we need to replay all pending updates again in case + // the passthrough value changed. + // + // So instead of a forked re-render implementation that knows how to handle + // render phase udpates, we can use the same implementation as during a + // regular mount or update. + var stateHook = updateWorkInProgressHook(); + var currentStateHook = currentHook; + + if (currentStateHook !== null) { + // This is an update. Process the update queue. + return updateActionStateImpl(stateHook, currentStateHook, action); + } + + updateWorkInProgressHook(); // State + // This is a mount. No updates to process. + + var state = stateHook.memoizedState; + var actionQueueHook = updateWorkInProgressHook(); + var actionQueue = actionQueueHook.queue; + var dispatch = actionQueue.dispatch; // This may have changed during the rerender. + + actionQueueHook.memoizedState = action; // For mount, pending is always false. + + return [state, dispatch, false]; +} - return workInProgressHook; - } // NOTE: defining two versions of this function to avoid size impact when this feature is disabled. - // Previously this function was inlined, the additional `memoCache` property makes it not inlined. +function pushEffect(tag, create, inst, deps) { + var effect = { + tag: tag, + create: create, + inst: inst, + deps: deps, + // Circular + next: null + }; + var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + + if (componentUpdateQueue === null) { + componentUpdateQueue = createFunctionComponentUpdateQueue(); + currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; + componentUpdateQueue.lastEffect = effect.next = effect; + } else { + var lastEffect = componentUpdateQueue.lastEffect; + + if (lastEffect === null) { + componentUpdateQueue.lastEffect = effect.next = effect; + } else { + var firstEffect = lastEffect.next; + lastEffect.next = effect; + effect.next = firstEffect; + componentUpdateQueue.lastEffect = effect; + } + } + + return effect; +} - var createFunctionComponentUpdateQueue; +function createEffectInstance() { + return { + destroy: undefined + }; +} - { - createFunctionComponentUpdateQueue = function () { - return { - lastEffect: null, - events: null, - stores: null, - memoCache: null - }; - }; - } +function mountRef(initialValue) { + var hook = mountWorkInProgressHook(); + var ref = { + current: initialValue + }; + hook.memoizedState = ref; + return ref; +} - function useThenable(thenable) { - // Track the position of the thenable within this fiber. - var index = thenableIndexCounter; - thenableIndexCounter += 1; +function updateRef(initialValue) { + var hook = updateWorkInProgressHook(); + return hook.memoizedState; +} - if (thenableState === null) { - thenableState = createThenableState(); - } +function mountEffectImpl(fiberFlags, hookFlags, create, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + currentlyRenderingFiber$1.flags |= fiberFlags; + hook.memoizedState = pushEffect(HasEffect | hookFlags, create, createEffectInstance(), nextDeps); +} - var result = trackUsedThenable(thenableState, thenable, index); +function updateEffectImpl(fiberFlags, hookFlags, create, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var effect = hook.memoizedState; + var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase + // state update or for strict mode. - if ( - currentlyRenderingFiber$1.alternate === null && - (workInProgressHook === null - ? currentlyRenderingFiber$1.memoizedState === null - : workInProgressHook.next === null) - ) { - // Initial render, and either this is the first time the component is - // called, or there were no Hooks called after this use() the previous - // time (perhaps because it threw). Subsequent Hook calls should use the - // mount dispatcher. - { - ReactSharedInternals.H = HooksDispatcherOnMountInDEV; - } - } + if (currentHook !== null) { + if (nextDeps !== null) { + var prevEffect = currentHook.memoizedState; + var prevDeps = prevEffect.deps; - return result; + if (areHookInputsEqual(nextDeps, prevDeps)) { + hook.memoizedState = pushEffect(hookFlags, create, inst, nextDeps); + return; + } } + } - function use(usable) { - if (usable !== null && typeof usable === "object") { - // $FlowFixMe[method-unbinding] - if (typeof usable.then === "function") { - // This is a thenable. - var thenable = usable; - return useThenable(thenable); - } else if (usable.$$typeof === REACT_CONTEXT_TYPE) { - var context = usable; - return readContext(context); - } - } // eslint-disable-next-line react-internal/safe-string-coercion + currentlyRenderingFiber$1.flags |= fiberFlags; + hook.memoizedState = pushEffect(HasEffect | hookFlags, create, inst, nextDeps); +} - throw new Error( - "An unsupported type was passed to use(): " + String(usable) - ); - } +function mountEffect(create, deps) { + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode && (currentlyRenderingFiber$1.mode & NoStrictPassiveEffectsMode) === NoMode) { + mountEffectImpl(MountPassiveDev | Passive$1 | PassiveStatic, Passive, create, deps); + } else { + mountEffectImpl(Passive$1 | PassiveStatic, Passive, create, deps); + } +} - function useMemoCache(size) { - var memoCache = null; // Fast-path, load memo cache from wip fiber if already prepared +function updateEffect(create, deps) { + updateEffectImpl(Passive$1, Passive, create, deps); +} - var updateQueue = currentlyRenderingFiber$1.updateQueue; +function mountInsertionEffect(create, deps) { + mountEffectImpl(Update, Insertion, create, deps); +} - if (updateQueue !== null) { - memoCache = updateQueue.memoCache; - } // Otherwise clone from the current fiber +function updateInsertionEffect(create, deps) { + return updateEffectImpl(Update, Insertion, create, deps); +} - if (memoCache == null) { - var current = currentlyRenderingFiber$1.alternate; +function mountLayoutEffect(create, deps) { + var fiberFlags = Update | LayoutStatic; - if (current !== null) { - var currentUpdateQueue = current.updateQueue; + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { + fiberFlags |= MountLayoutDev; + } - if (currentUpdateQueue !== null) { - var currentMemoCache = currentUpdateQueue.memoCache; + return mountEffectImpl(fiberFlags, Layout, create, deps); +} - if (currentMemoCache != null) { - memoCache = { - data: currentMemoCache.data.map(function (array) { - return array.slice(); - }), - index: 0 - }; - } - } - } - } // Finally fall back to allocating a fresh instance of the cache +function updateLayoutEffect(create, deps) { + return updateEffectImpl(Update, Layout, create, deps); +} - if (memoCache == null) { - memoCache = { - data: [], - index: 0 - }; - } +function imperativeHandleEffect(create, ref) { + if (typeof ref === 'function') { + var refCallback = ref; + var inst = create(); + refCallback(inst); + return function () { + refCallback(null); + }; + } else if (ref !== null && ref !== undefined) { + var refObject = ref; - if (updateQueue === null) { - updateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = updateQueue; + { + if (!refObject.hasOwnProperty('current')) { + error('Expected useImperativeHandle() first argument to either be a ' + 'ref callback or React.createRef() object. Instead received: %s.', 'an object with keys {' + Object.keys(refObject).join(', ') + '}'); } + } - updateQueue.memoCache = memoCache; - var data = memoCache.data[memoCache.index]; - - if (data === undefined) { - data = memoCache.data[memoCache.index] = new Array(size); + var _inst = create(); - for (var i = 0; i < size; i++) { - data[i] = REACT_MEMO_CACHE_SENTINEL; - } - } else if (data.length !== size) { - // TODO: consider warning or throwing here - { - error( - "Expected a constant size argument for each invocation of useMemoCache. " + - "The previous cache was allocated with size %s but size %s was requested.", - data.length, - size - ); - } - } + refObject.current = _inst; + return function () { + refObject.current = null; + }; + } +} - memoCache.index++; - return data; +function mountImperativeHandle(ref, create, deps) { + { + if (typeof create !== 'function') { + error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null'); } + } // TODO: If deps are provided, should we skip comparing the ref itself? - function basicStateReducer(state, action) { - // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types - return typeof action === "function" ? action(state) : action; - } - function mountReducer(reducer, initialArg, init) { - var hook = mountWorkInProgressHook(); - var initialState; + var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; + var fiberFlags = Update | LayoutStatic; - if (init !== undefined) { - initialState = init(initialArg); + if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { + fiberFlags |= MountLayoutDev; + } - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - init(initialArg); - setIsStrictModeForDevtools(false); - } - } else { - initialState = initialArg; - } + mountEffectImpl(fiberFlags, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps); +} - hook.memoizedState = hook.baseState = initialState; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: reducer, - lastRenderedState: initialState - }; - hook.queue = queue; - var dispatch = (queue.dispatch = dispatchReducerAction.bind( - null, - currentlyRenderingFiber$1, - queue - )); - return [hook.memoizedState, dispatch]; +function updateImperativeHandle(ref, create, deps) { + { + if (typeof create !== 'function') { + error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null'); } + } // TODO: If deps are provided, should we skip comparing the ref itself? - function updateReducer(reducer, initialArg, init) { - var hook = updateWorkInProgressHook(); - return updateReducerImpl(hook, currentHook, reducer); - } - function updateReducerImpl(hook, current, reducer) { - var queue = hook.queue; + var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null; + updateEffectImpl(Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps); +} - if (queue === null) { - throw new Error( - "Should have a queue. This is likely a bug in React. Please file an issue." - ); - } +function mountDebugValue(value, formatterFn) {// This hook is normally a no-op. + // The react-debug-hooks package injects its own implementation + // so that e.g. DevTools can display custom hook values. +} - queue.lastRenderedReducer = reducer; // The last rebase update that is NOT part of the base state. +var updateDebugValue = mountDebugValue; - var baseQueue = hook.baseQueue; // The last pending update that hasn't been processed yet. +function mountCallback(callback, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + hook.memoizedState = [callback, nextDeps]; + return callback; +} - var pendingQueue = queue.pending; +function updateCallback(callback, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var prevState = hook.memoizedState; - if (pendingQueue !== null) { - // We have new updates that haven't been processed yet. - // We'll add them to the base queue. - if (baseQueue !== null) { - // Merge the pending queue and the base queue. - var baseFirst = baseQueue.next; - var pendingFirst = pendingQueue.next; - baseQueue.next = pendingFirst; - pendingQueue.next = baseFirst; - } + if (nextDeps !== null) { + var prevDeps = prevState[1]; - { - if (current.baseQueue !== baseQueue) { - // Internal invariant that should never happen, but feasibly could in - // the future if we implement resuming, or some form of that. - error( - "Internal error: Expected work-in-progress queue to be a clone. " + - "This is a bug in React." - ); - } - } + if (areHookInputsEqual(nextDeps, prevDeps)) { + return prevState[0]; + } + } - current.baseQueue = baseQueue = pendingQueue; - queue.pending = null; - } + hook.memoizedState = [callback, nextDeps]; + return callback; +} - var baseState = hook.baseState; +function mountMemo(nextCreate, deps) { + var hook = mountWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var nextValue = nextCreate(); - if (baseQueue === null) { - // If there are no pending updates, then the memoized state should be the - // same as the base state. Currently these only diverge in the case of - // useOptimistic, because useOptimistic accepts a new baseState on - // every render. - hook.memoizedState = baseState; // We don't need to call markWorkInProgressReceivedUpdate because - // baseState is derived from other reactive values. - } else { - // We have a queue to process. - var first = baseQueue.next; - var newState = baseState; - var newBaseState = null; - var newBaseQueueFirst = null; - var newBaseQueueLast = null; - var update = first; - var didReadFromEntangledAsyncAction = false; + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + nextCreate(); + setIsStrictModeForDevtools(false); + } - do { - // An extra OffscreenLane bit is added to updates that were made to - // a hidden tree, so that we can distinguish them from updates that were - // already there when the tree was hidden. - var updateLane = removeLanes(update.lane, OffscreenLane); - var isHiddenUpdate = updateLane !== update.lane; // Check if this update was made while the tree was hidden. If so, then - // it's not a "base" update and we should disregard the extra base lanes - // that were added to renderLanes when we entered the Offscreen tree. - - var shouldSkipUpdate = isHiddenUpdate - ? !isSubsetOfLanes(getWorkInProgressRootRenderLanes(), updateLane) - : !isSubsetOfLanes(renderLanes, updateLane); - - if (shouldSkipUpdate) { - // Priority is insufficient. Skip this update. If this is the first - // skipped update, the previous update/state is the new base - // update/state. - var clone = { - lane: updateLane, - revertLane: update.revertLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; + hook.memoizedState = [nextValue, nextDeps]; + return nextValue; +} - if (newBaseQueueLast === null) { - newBaseQueueFirst = newBaseQueueLast = clone; - newBaseState = newState; - } else { - newBaseQueueLast = newBaseQueueLast.next = clone; - } // Update the remaining priority in the queue. - // TODO: Don't need to accumulate this. Instead, we can remove - // renderLanes from the original lanes. +function updateMemo(nextCreate, deps) { + var hook = updateWorkInProgressHook(); + var nextDeps = deps === undefined ? null : deps; + var prevState = hook.memoizedState; // Assume these are defined. If they're not, areHookInputsEqual will warn. - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - updateLane - ); - markSkippedUpdateLanes(updateLane); - } else { - // This update does have sufficient priority. - // Check if this is an optimistic update. - var revertLane = update.revertLane; - - if (!enableAsyncActions || revertLane === NoLane) { - // This is not an optimistic update, and we're going to apply it now. - // But, if there were earlier updates that were skipped, we need to - // leave this update in the queue so it can be rebased later. - if (newBaseQueueLast !== null) { - var _clone = { - // This update is going to be committed so we never want uncommit - // it. Using NoLane works because 0 is a subset of all bitmasks, so - // this will never be skipped by the check above. - lane: NoLane, - revertLane: NoLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; - newBaseQueueLast = newBaseQueueLast.next = _clone; - } // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - - if (updateLane === peekEntangledActionLane()) { - didReadFromEntangledAsyncAction = true; - } - } else { - // This is an optimistic update. If the "revert" priority is - // sufficient, don't apply the update. Otherwise, apply the update, - // but leave it in the queue so it can be either reverted or - // rebased in a subsequent render. - if (isSubsetOfLanes(renderLanes, revertLane)) { - // The transition that this optimistic update is associated with - // has finished. Pretend the update doesn't exist by skipping - // over it. - update = update.next; // Check if this update is part of a pending async action. If so, - // we'll need to suspend until the action has finished, so that it's - // batched together with future updates in the same action. - - if (revertLane === peekEntangledActionLane()) { - didReadFromEntangledAsyncAction = true; - } + if (nextDeps !== null) { + var prevDeps = prevState[1]; - continue; - } else { - var _clone2 = { - // Once we commit an optimistic update, we shouldn't uncommit it - // until the transition it is associated with has finished - // (represented by revertLane). Using NoLane here works because 0 - // is a subset of all bitmasks, so this will never be skipped by - // the check above. - lane: NoLane, - // Reuse the same revertLane so we know when the transition - // has finished. - revertLane: update.revertLane, - action: update.action, - hasEagerState: update.hasEagerState, - eagerState: update.eagerState, - next: null - }; - - if (newBaseQueueLast === null) { - newBaseQueueFirst = newBaseQueueLast = _clone2; - newBaseState = newState; - } else { - newBaseQueueLast = newBaseQueueLast.next = _clone2; - } // Update the remaining priority in the queue. - // TODO: Don't need to accumulate this. Instead, we can remove - // renderLanes from the original lanes. - - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - revertLane - ); - markSkippedUpdateLanes(revertLane); - } - } // Process this update. + if (areHookInputsEqual(nextDeps, prevDeps)) { + return prevState[0]; + } + } - var action = update.action; + var nextValue = nextCreate(); - if (shouldDoubleInvokeUserFnsInHooksDEV) { - reducer(newState, action); - } + if (shouldDoubleInvokeUserFnsInHooksDEV) { + setIsStrictModeForDevtools(true); + nextCreate(); + setIsStrictModeForDevtools(false); + } - if (update.hasEagerState) { - // If this update is a state update (not a reducer) and was processed eagerly, - // we can use the eagerly computed state - newState = update.eagerState; - } else { - newState = reducer(newState, action); - } - } + hook.memoizedState = [nextValue, nextDeps]; + return nextValue; +} - update = update.next; - } while (update !== null && update !== first); +function mountDeferredValue(value, initialValue) { + var hook = mountWorkInProgressHook(); + return mountDeferredValueImpl(hook, value, initialValue); +} - if (newBaseQueueLast === null) { - newBaseState = newState; - } else { - newBaseQueueLast.next = newBaseQueueFirst; - } // Mark that the fiber performed work, but only if the new state is - // different from the current state. - - if (!objectIs(newState, hook.memoizedState)) { - markWorkInProgressReceivedUpdate(); // Check if this update is part of a pending async action. If so, we'll - // need to suspend until the action has finished, so that it's batched - // together with future updates in the same action. - // TODO: Once we support hooks inside useMemo (or an equivalent - // memoization boundary like Forget), hoist this logic so that it only - // suspends if the memo boundary produces a new value. - - if (didReadFromEntangledAsyncAction) { - var entangledActionThenable = peekEntangledActionThenable(); - - if (entangledActionThenable !== null) { - // TODO: Instead of the throwing the thenable directly, throw a - // special object like `use` does so we can detect if it's captured - // by userspace. - throw entangledActionThenable; - } - } - } +function updateDeferredValue(value, initialValue) { + var hook = updateWorkInProgressHook(); + var resolvedCurrentHook = currentHook; + var prevValue = resolvedCurrentHook.memoizedState; + return updateDeferredValueImpl(hook, prevValue, value, initialValue); +} - hook.memoizedState = newState; - hook.baseState = newBaseState; - hook.baseQueue = newBaseQueueLast; - queue.lastRenderedState = newState; - } +function rerenderDeferredValue(value, initialValue) { + var hook = updateWorkInProgressHook(); + + if (currentHook === null) { + // This is a rerender during a mount. + return mountDeferredValueImpl(hook, value, initialValue); + } else { + // This is a rerender during an update. + var prevValue = currentHook.memoizedState; + return updateDeferredValueImpl(hook, prevValue, value, initialValue); + } +} + +function mountDeferredValueImpl(hook, value, initialValue) { + if (// When `initialValue` is provided, we defer the initial render even if the + // current render is not synchronous. + initialValue !== undefined && // However, to avoid waterfalls, we do not defer if this render + // was itself spawned by an earlier useDeferredValue. Check if DeferredLane + // is part of the render lanes. + !includesSomeLane(renderLanes, DeferredLane)) { + // Render with the initial value + hook.memoizedState = initialValue; // Schedule a deferred render to switch to the final value. + + var deferredLane = requestDeferredLane(); + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, deferredLane); + markSkippedUpdateLanes(deferredLane); + return initialValue; + } else { + hook.memoizedState = value; + return value; + } +} - if (baseQueue === null) { - // `queue.lanes` is used for entangling transitions. We can set it back to - // zero once the queue is empty. - queue.lanes = NoLanes; +function updateDeferredValueImpl(hook, prevValue, value, initialValue) { + if (objectIs(value, prevValue)) { + // The incoming value is referentially identical to the currently rendered + // value, so we can bail out quickly. + return value; + } else { + // Received a new value that's different from the current value. + // Check if we're inside a hidden tree + if (isCurrentTreeHidden()) { + // Revealing a prerendered tree is considered the same as mounting new + // one, so we reuse the "mount" path in this case. + var resultValue = mountDeferredValueImpl(hook, value, initialValue); // Unlike during an actual mount, we need to mark this as an update if + // the value changed. + + if (!objectIs(resultValue, prevValue)) { + markWorkInProgressReceivedUpdate(); } - var dispatch = queue.dispatch; - return [hook.memoizedState, dispatch]; + return resultValue; } - function rerenderReducer(reducer, initialArg, init) { - var hook = updateWorkInProgressHook(); - var queue = hook.queue; + var shouldDeferValue = !includesOnlyNonUrgentLanes(renderLanes); - if (queue === null) { - throw new Error( - "Should have a queue. This is likely a bug in React. Please file an issue." - ); - } + if (shouldDeferValue) { + // This is an urgent update. Since the value has changed, keep using the + // previous value and spawn a deferred render to update it later. + // Schedule a deferred render + var deferredLane = requestDeferredLane(); + currentlyRenderingFiber$1.lanes = mergeLanes(currentlyRenderingFiber$1.lanes, deferredLane); + markSkippedUpdateLanes(deferredLane); // Reuse the previous value. We do not need to mark this as an update, + // because we did not render a new value. - queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous - // work-in-progress hook. + return prevValue; + } else { + // This is not an urgent update, so we can use the latest value regardless + // of what it is. No need to defer it. + // Mark this as an update to prevent the fiber from bailing out. + markWorkInProgressReceivedUpdate(); + hook.memoizedState = value; + return value; + } + } +} - var dispatch = queue.dispatch; - var lastRenderPhaseUpdate = queue.pending; - var newState = hook.memoizedState; +function startTransition(fiber, queue, pendingState, finishedState, callback, options) { + var previousPriority = getCurrentUpdatePriority(); + setCurrentUpdatePriority(higherEventPriority(previousPriority, ContinuousEventPriority)); + var prevTransition = ReactSharedInternals.T; + var currentTransition = { + _callbacks: new Set() + }; + + if (enableAsyncActions) { + // We don't really need to use an optimistic update here, because we + // schedule a second "revert" update below (which we use to suspend the + // transition until the async action scope has finished). But we'll use an + // optimistic update anyway to make it less likely the behavior accidentally + // diverges; for example, both an optimistic update and this one should + // share the same lane. + ReactSharedInternals.T = currentTransition; + dispatchOptimisticSetState(fiber, false, queue, pendingState); + } else { + ReactSharedInternals.T = null; + dispatchSetState(fiber, queue, pendingState); + ReactSharedInternals.T = currentTransition; + } + + { + currentTransition._updatedFibers = new Set(); + } + + try { + if (enableAsyncActions) { + var returnValue = callback(); // Check if we're inside an async action scope. If so, we'll entangle + // this new action with the existing scope. + // + // If we're not already inside an async action scope, and this action is + // async, then we'll create a new async scope. + // + // In the async case, the resulting render will suspend until the async + // action scope has finished. - if (lastRenderPhaseUpdate !== null) { - // The queue doesn't persist past this render pass. - queue.pending = null; - var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next; - var update = firstRenderPhaseUpdate; + if (returnValue !== null && typeof returnValue === 'object' && typeof returnValue.then === 'function') { + var thenable = returnValue; + notifyTransitionCallbacks(currentTransition, thenable); // Create a thenable that resolves to `finishedState` once the async + // action has completed. - do { - // Process this render phase update. We don't have to check the - // priority because it will always be the same as the current - // render's. - var action = update.action; - newState = reducer(newState, action); - update = update.next; - } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is - // different from the current state. + var thenableForFinishedState = chainThenableValue(thenable, finishedState); + dispatchSetState(fiber, queue, thenableForFinishedState); + } else { + dispatchSetState(fiber, queue, finishedState); + } + } else { + // Async actions are not enabled. + dispatchSetState(fiber, queue, finishedState); + callback(); + } + } catch (error) { + if (enableAsyncActions) { + // This is a trick to get the `useTransition` hook to rethrow the error. + // When it unwraps the thenable with the `use` algorithm, the error + // will be thrown. + var rejectedThenable = { + then: function () {}, + status: 'rejected', + reason: error + }; + dispatchSetState(fiber, queue, rejectedThenable); + } else { + // The error rethrowing behavior is only enabled when the async actions + // feature is on, even for sync actions. + throw error; + } + } finally { + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; - if (!objectIs(newState, hook.memoizedState)) { - markWorkInProgressReceivedUpdate(); - } + { + if (prevTransition === null && currentTransition._updatedFibers) { + var updatedFibersCount = currentTransition._updatedFibers.size; - hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to - // the base state unless the queue is empty. - // TODO: Not sure if this is the desired semantics, but it's what we - // do for gDSFP. I can't remember why. + currentTransition._updatedFibers.clear(); - if (hook.baseQueue === null) { - hook.baseState = newState; + if (updatedFibersCount > 10) { + warn('Detected a large number of updates inside startTransition. ' + 'If this is due to a subscription please re-write it to use React provided hooks. ' + 'Otherwise concurrent mode guarantees are off the table.'); } - - queue.lastRenderedState = newState; } - - return [newState, dispatch]; } + } +} - function mountSyncExternalStore(subscribe, getSnapshot, getServerSnapshot) { - var fiber = currentlyRenderingFiber$1; - var hook = mountWorkInProgressHook(); - var nextSnapshot; - - { - nextSnapshot = getSnapshot(); +function mountTransition() { + var stateHook = mountStateImpl(false); // The `start` method never changes. - { - if (!didWarnUncachedGetSnapshot) { - var cachedSnapshot = getSnapshot(); + var start = startTransition.bind(null, currentlyRenderingFiber$1, stateHook.queue, true, false); + var hook = mountWorkInProgressHook(); + hook.memoizedState = start; + return [false, start]; +} - if (!objectIs(nextSnapshot, cachedSnapshot)) { - error( - "The result of getSnapshot should be cached to avoid an infinite loop" - ); +function updateTransition() { + var _updateState2 = updateState(), + booleanOrThenable = _updateState2[0]; - didWarnUncachedGetSnapshot = true; - } - } - } // Unless we're rendering a blocking lane, schedule a consistency check. - // Right before committing, we will walk the tree and check if any of the - // stores were mutated. - // - // We won't do this if we're hydrating server-rendered content, because if - // the content is stale, it's already visible anyway. Instead we'll patch - // it up in a passive effect. + var hook = updateWorkInProgressHook(); + var start = hook.memoizedState; + var isPending = typeof booleanOrThenable === 'boolean' ? booleanOrThenable : // This will suspend until the async action scope has finished. + useThenable(booleanOrThenable); + return [isPending, start]; +} - var root = getWorkInProgressRoot(); +function rerenderTransition() { + var _rerenderState = rerenderState(), + booleanOrThenable = _rerenderState[0]; - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } + var hook = updateWorkInProgressHook(); + var start = hook.memoizedState; + var isPending = typeof booleanOrThenable === 'boolean' ? booleanOrThenable : // This will suspend until the async action scope has finished. + useThenable(booleanOrThenable); + return [isPending, start]; +} - var rootRenderLanes = getWorkInProgressRootRenderLanes(); +function useHostTransitionStatus() { + if (!enableAsyncActions) { + throw new Error('Not implemented.'); + } - if (!includesBlockingLane(root, rootRenderLanes)) { - pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); - } - } // Read the current snapshot from the store on every render. This breaks the - // normal rules of React, and only works because store updates are - // always synchronous. + var status = readContext(HostTransitionContext); + return status !== null ? status : NotPendingTransition; +} - hook.memoizedState = nextSnapshot; - var inst = { - value: nextSnapshot, - getSnapshot: getSnapshot - }; - hook.queue = inst; // Schedule an effect to subscribe to the store. - - mountEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [ - subscribe - ]); // Schedule an effect to update the mutable instance fields. We will update - // this whenever subscribe, getSnapshot, or value changes. Because there's no - // clean-up function, and we track the deps correctly, we can call pushEffect - // directly, without storing any additional state. For the same reason, we - // don't need to set a static flag, either. - - fiber.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - updateStoreInstance.bind(null, fiber, inst, nextSnapshot, getSnapshot), - createEffectInstance(), - null - ); - return nextSnapshot; - } - - function updateSyncExternalStore( - subscribe, - getSnapshot, - getServerSnapshot - ) { - var fiber = currentlyRenderingFiber$1; - var hook = updateWorkInProgressHook(); // Read the current snapshot from the store on every render. This breaks the - // normal rules of React, and only works because store updates are - // always synchronous. - - var nextSnapshot; +function mountId() { + var hook = mountWorkInProgressHook(); + var root = getWorkInProgressRoot(); // TODO: In Fizz, id generation is specific to each server config. Maybe we + // should do this in Fiber, too? Deferring this decision for now because + // there's no other place to store the prefix except for an internal field on + // the public createRoot object, which the fiber tree does not currently have + // a reference to. + + var identifierPrefix = root.identifierPrefix; + var id; + + { + // Use a lowercase r prefix for client-generated ids. + var globalClientId = globalClientIdCounter++; + id = ':' + identifierPrefix + 'r' + globalClientId.toString(32) + ':'; + } + + hook.memoizedState = id; + return id; +} - { - nextSnapshot = getSnapshot(); +function updateId() { + var hook = updateWorkInProgressHook(); + var id = hook.memoizedState; + return id; +} - { - if (!didWarnUncachedGetSnapshot) { - var cachedSnapshot = getSnapshot(); +function mountRefresh() { + var hook = mountWorkInProgressHook(); + var refresh = hook.memoizedState = refreshCache.bind(null, currentlyRenderingFiber$1); + return refresh; +} - if (!objectIs(nextSnapshot, cachedSnapshot)) { - error( - "The result of getSnapshot should be cached to avoid an infinite loop" - ); +function updateRefresh() { + var hook = updateWorkInProgressHook(); + return hook.memoizedState; +} - didWarnUncachedGetSnapshot = true; - } - } - } - } +function refreshCache(fiber, seedKey, seedValue) { + // TODO: Consider warning if the refresh is at discrete priority, or if we + // otherwise suspect that it wasn't batched properly. - var prevSnapshot = (currentHook || hook).memoizedState; - var snapshotChanged = !objectIs(prevSnapshot, nextSnapshot); - if (snapshotChanged) { - hook.memoizedState = nextSnapshot; - markWorkInProgressReceivedUpdate(); - } + var provider = fiber.return; - var inst = hook.queue; - updateEffect(subscribeToStore.bind(null, fiber, inst, subscribe), [ - subscribe - ]); // Whenever getSnapshot or subscribe changes, we need to check in the - // commit phase if there was an interleaved mutation. In concurrent mode - // this can happen all the time, but even in synchronous mode, an earlier - // effect may have mutated the store. - - if ( - inst.getSnapshot !== getSnapshot || - snapshotChanged || // Check if the subscribe function changed. We can save some memory by - // checking whether we scheduled a subscription effect above. - (workInProgressHook !== null && - workInProgressHook.memoizedState.tag & HasEffect) - ) { - fiber.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - updateStoreInstance.bind( - null, - fiber, - inst, - nextSnapshot, - getSnapshot - ), - createEffectInstance(), - null - ); // Unless we're rendering a blocking lane, schedule a consistency check. - // Right before committing, we will walk the tree and check if any of the - // stores were mutated. - - var root = getWorkInProgressRoot(); - - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } - - if (!includesBlockingLane(root, renderLanes)) { - pushStoreConsistencyCheck(fiber, getSnapshot, nextSnapshot); - } - } - - return nextSnapshot; - } - - function pushStoreConsistencyCheck(fiber, getSnapshot, renderedSnapshot) { - fiber.flags |= StoreConsistency; - var check = { - getSnapshot: getSnapshot, - value: renderedSnapshot - }; - var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + while (provider !== null) { + switch (provider.tag) { + case CacheComponent: + case HostRoot: + { + // Schedule an update on the cache boundary to trigger a refresh. + var lane = requestUpdateLane(provider); + var refreshUpdate = createUpdate(lane); + var root = enqueueUpdate(provider, refreshUpdate, lane); - if (componentUpdateQueue === null) { - componentUpdateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; - componentUpdateQueue.stores = [check]; - } else { - var stores = componentUpdateQueue.stores; + if (root !== null) { + scheduleUpdateOnFiber(root, provider, lane); + entangleTransitions(root, provider, lane); + } // TODO: If a refresh never commits, the new cache created here must be + // released. A simple case is start refreshing a cache boundary, but then + // unmount that boundary before the refresh completes. - if (stores === null) { - componentUpdateQueue.stores = [check]; - } else { - stores.push(check); - } - } - } - function updateStoreInstance(fiber, inst, nextSnapshot, getSnapshot) { - // These are updated in the passive phase - inst.value = nextSnapshot; - inst.getSnapshot = getSnapshot; // Something may have been mutated in between render and commit. This could - // have been in an event that fired before the passive effects, or it could - // have been in a layout effect. In that case, we would have used the old - // snapsho and getSnapshot values to bail out. We need to check one more time. + var seededCache = createCache(); - if (checkIfSnapshotChanged(inst)) { - // Force a re-render. - forceStoreRerender(fiber); - } - } + if (seedKey !== null && seedKey !== undefined && root !== null) { + { + { + error('The seed argument is not enabled outside experimental channels.'); + } + } + } - function subscribeToStore(fiber, inst, subscribe) { - var handleStoreChange = function () { - // The store changed. Check if the snapshot changed since the last time we - // read from the store. - if (checkIfSnapshotChanged(inst)) { - // Force a re-render. - forceStoreRerender(fiber); + var payload = { + cache: seededCache + }; + refreshUpdate.payload = payload; + return; } - }; // Subscribe to the store and return a clean-up function. - - return subscribe(handleStoreChange); } - function checkIfSnapshotChanged(inst) { - var latestGetSnapshot = inst.getSnapshot; - var prevValue = inst.value; + provider = provider.return; + } // TODO: Warn if unmounted? - try { - var nextValue = latestGetSnapshot(); - return !objectIs(prevValue, nextValue); - } catch (error) { - return true; - } +} + +function dispatchReducerAction(fiber, queue, action) { + { + if (typeof arguments[3] === 'function') { + error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().'); } + } - function forceStoreRerender(fiber) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + var lane = requestUpdateLane(fiber); + var update = { + lane: lane, + revertLane: NoLane, + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } + if (isRenderPhaseUpdate(fiber)) { + enqueueRenderPhaseUpdate(queue, update); + } else { + var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - function mountStateImpl(initialState) { - var hook = mountWorkInProgressHook(); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitionUpdate(root, queue, lane); + } + } - if (typeof initialState === "function") { - var initialStateInitializer = initialState; // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + markUpdateInDevTools(fiber, lane); +} - initialState = initialStateInitializer(); +function dispatchSetState(fiber, queue, action) { + { + if (typeof arguments[3] === 'function') { + error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().'); + } + } + + var lane = requestUpdateLane(fiber); + var update = { + lane: lane, + revertLane: NoLane, + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; + + if (isRenderPhaseUpdate(fiber)) { + enqueueRenderPhaseUpdate(queue, update); + } else { + var alternate = fiber.alternate; + + if (fiber.lanes === NoLanes && (alternate === null || alternate.lanes === NoLanes)) { + // The queue is currently empty, which means we can eagerly compute the + // next state before entering the render phase. If the new state is the + // same as the current state, we may be able to bail out entirely. + var lastRenderedReducer = queue.lastRenderedReducer; + + if (lastRenderedReducer !== null) { + var prevDispatcher = null; - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); // $FlowFixMe[incompatible-use]: Flow doesn't like mixed types + { + prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + } - initialStateInitializer(); - setIsStrictModeForDevtools(false); + try { + var currentState = queue.lastRenderedState; + var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute + // it, on the update object. If the reducer hasn't changed by the + // time we enter the render phase, then the eager state can be used + // without calling the reducer again. + + update.hasEagerState = true; + update.eagerState = eagerState; + + if (objectIs(eagerState, currentState)) { + // Fast path. We can bail out without scheduling React to re-render. + // It's still possible that we'll need to rebase this update later, + // if the component re-renders for a different reason and by that + // time the reducer has changed. + // TODO: Do we still need to entangle transitions in this case? + enqueueConcurrentHookUpdateAndEagerlyBailout(fiber, queue, update); + return; + } + } catch (error) {// Suppress the error. It will throw again in the render phase. + } finally { + { + ReactSharedInternals.H = prevDispatcher; + } } } - - hook.memoizedState = hook.baseState = initialState; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: basicStateReducer, - lastRenderedState: initialState - }; - hook.queue = queue; - return hook; } - function mountState(initialState) { - var hook = mountStateImpl(initialState); - var queue = hook.queue; - var dispatch = dispatchSetState.bind( - null, - currentlyRenderingFiber$1, - queue - ); - queue.dispatch = dispatch; - return [hook.memoizedState, dispatch]; - } + var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - function updateState(initialState) { - return updateReducer(basicStateReducer); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitionUpdate(root, queue, lane); } + } - function rerenderState(initialState) { - return rerenderReducer(basicStateReducer); - } + markUpdateInDevTools(fiber, lane); +} - function mountOptimistic(passthrough, reducer) { - var hook = mountWorkInProgressHook(); - hook.memoizedState = hook.baseState = passthrough; - var queue = { - pending: null, - lanes: NoLanes, - dispatch: null, - // Optimistic state does not use the eager update optimization. - lastRenderedReducer: null, - lastRenderedState: null - }; - hook.queue = queue; // This is different than the normal setState function. +function dispatchOptimisticSetState(fiber, throwIfDuringRender, queue, action) { + var transition = requestCurrentTransition(); + + { + if (transition === null) { + // An optimistic update occurred, but startTransition is not on the stack. + // There are two likely scenarios. + // One possibility is that the optimistic update is triggered by a regular + // event handler (e.g. `onSubmit`) instead of an action. This is a mistake + // and we will warn. + // The other possibility is the optimistic update is inside an async + // action, but after an `await`. In this case, we can make it "just work" + // by associating the optimistic update with the pending async action. + // Technically it's possible that the optimistic update is unrelated to + // the pending action, but we don't have a way of knowing this for sure + // because browsers currently do not provide a way to track async scope. + // (The AsyncContext proposal, if it lands, will solve this in the + // future.) However, this is no different than the problem of unrelated + // transitions being grouped together — it's not wrong per se, but it's + // not ideal. + // Once AsyncContext starts landing in browsers, we will provide better + // warnings in development for these cases. + if (peekEntangledActionLane() !== NoLane) ; else { + // There's no pending async action. The most likely cause is that we're + // inside a regular event handler (e.g. onSubmit) instead of an action. + error('An optimistic state update occurred outside a transition or ' + 'action. To fix, move the update to an action, or wrap ' + 'with startTransition.'); + } + } + } + + var update = { + // An optimistic update commits synchronously. + lane: SyncLane, + // After committing, the optimistic update is "reverted" using the same + // lane as the transition it's associated with. + revertLane: requestTransitionLane(), + action: action, + hasEagerState: false, + eagerState: null, + next: null + }; + + if (isRenderPhaseUpdate(fiber)) { + // When calling startTransition during render, this warns instead of + // throwing because throwing would be a breaking change. setOptimisticState + // is a new API so it's OK to throw. + if (throwIfDuringRender) { + throw new Error('Cannot update optimistic state while rendering.'); + } else { + // startTransition was called during render. We don't need to do anything + // besides warn here because the render phase update would be overidden by + // the second update, anyway. We can remove this branch and make it throw + // in a future release. + { + error('Cannot call startTransition while rendering.'); + } + } + } else { + var root = enqueueConcurrentHookUpdate(fiber, queue, update, SyncLane); + + if (root !== null) { + // NOTE: The optimistic update implementation assumes that the transition + // will never be attempted before the optimistic update. This currently + // holds because the optimistic update is always synchronous. If we ever + // change that, we'll need to account for this. + scheduleUpdateOnFiber(root, fiber, SyncLane); // Optimistic updates are always synchronous, so we don't need to call + // entangleTransitionUpdate here. + } + } + + markUpdateInDevTools(fiber, SyncLane); +} - var dispatch = dispatchOptimisticSetState.bind( - null, - currentlyRenderingFiber$1, - true, - queue - ); - queue.dispatch = dispatch; - return [passthrough, dispatch]; - } +function isRenderPhaseUpdate(fiber) { + var alternate = fiber.alternate; + return fiber === currentlyRenderingFiber$1 || alternate !== null && alternate === currentlyRenderingFiber$1; +} - function updateOptimistic(passthrough, reducer) { - var hook = updateWorkInProgressHook(); - return updateOptimisticImpl(hook, currentHook, passthrough, reducer); - } +function enqueueRenderPhaseUpdate(queue, update) { + // This is a render phase update. Stash it in a lazily-created map of + // queue -> linked list of updates. After this render pass, we'll restart + // and apply the stashed updates on top of the work-in-progress hook. + didScheduleRenderPhaseUpdateDuringThisPass = didScheduleRenderPhaseUpdate = true; + var pending = queue.pending; + + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; + } else { + update.next = pending.next; + pending.next = update; + } + + queue.pending = update; +} // TODO: Move to ReactFiberConcurrentUpdates? + + +function entangleTransitionUpdate(root, queue, lane) { + if (isTransitionLane(lane)) { + var queueLanes = queue.lanes; // If any entangled lanes are no longer pending on the root, then they + // must have finished. We can remove them from the shared queue, which + // represents a superset of the actually pending lanes. In some cases we + // may entangle more than we need to, but that's OK. In fact it's worse if + // we *don't* entangle when we should. + + queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + + var newQueueLanes = mergeLanes(queueLanes, lane); + queue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if + // the lane finished since the last time we entangled it. So we need to + // entangle it again, just to be sure. + + markRootEntangled(root, newQueueLanes); + } +} - function updateOptimisticImpl(hook, current, passthrough, reducer) { - // Optimistic updates are always rebased on top of the latest value passed in - // as an argument. It's called a passthrough because if there are no pending - // updates, it will be returned as-is. - // - // Reset the base state to the passthrough. Future updates will be applied - // on top of this. - hook.baseState = passthrough; // If a reducer is not provided, default to the same one used by useState. +function markUpdateInDevTools(fiber, lane, action) { - var resolvedReducer = - typeof reducer === "function" ? reducer : basicStateReducer; - return updateReducerImpl(hook, currentHook, resolvedReducer); - } + { + markStateUpdateScheduled(fiber, lane); + } +} - function rerenderOptimistic(passthrough, reducer) { - // Unlike useState, useOptimistic doesn't support render phase updates. - // Also unlike useState, we need to replay all pending updates again in case - // the passthrough value changed. - // - // So instead of a forked re-render implementation that knows how to handle - // render phase udpates, we can use the same implementation as during a - // regular mount or update. - var hook = updateWorkInProgressHook(); - - if (currentHook !== null) { - // This is an update. Process the update queue. - return updateOptimisticImpl(hook, currentHook, passthrough, reducer); - } // This is a mount. No updates to process. - // Reset the base state to the passthrough. Future updates will be applied - // on top of this. - - hook.baseState = passthrough; - var dispatch = hook.queue.dispatch; - return [passthrough, dispatch]; - } // useActionState actions run sequentially, because each action receives the - // previous state as an argument. We store pending actions on a queue. - - function dispatchActionState( - fiber, - actionQueue, - setPendingState, - setState, - payload - ) { - if (isRenderPhaseUpdate(fiber)) { - throw new Error("Cannot update form state while rendering."); - } - - var last = actionQueue.pending; - - if (last === null) { - // There are no pending actions; this is the first one. We can run - // it immediately. - var newLast = { - payload: payload, - next: null // circular - }; - newLast.next = actionQueue.pending = newLast; - runActionStateAction(actionQueue, setPendingState, setState, payload); - } else { - // There's already an action running. Add to the queue. - var first = last.next; - var _newLast = { - payload: payload, - next: first - }; - actionQueue.pending = last.next = _newLast; - } - } +var ContextOnlyDispatcher = { + readContext: readContext, + use: use, + useCallback: throwInvalidHookError, + useContext: throwInvalidHookError, + useEffect: throwInvalidHookError, + useImperativeHandle: throwInvalidHookError, + useLayoutEffect: throwInvalidHookError, + useInsertionEffect: throwInvalidHookError, + useMemo: throwInvalidHookError, + useReducer: throwInvalidHookError, + useRef: throwInvalidHookError, + useState: throwInvalidHookError, + useDebugValue: throwInvalidHookError, + useDeferredValue: throwInvalidHookError, + useTransition: throwInvalidHookError, + useSyncExternalStore: throwInvalidHookError, + useId: throwInvalidHookError +}; + +{ + ContextOnlyDispatcher.useCacheRefresh = throwInvalidHookError; +} - function runActionStateAction( - actionQueue, - setPendingState, - setState, - payload - ) { - var action = actionQueue.action; - var prevState = actionQueue.state; // This is a fork of startTransition +{ + ContextOnlyDispatcher.useMemoCache = throwInvalidHookError; +} - var prevTransition = ReactSharedInternals.T; - var currentTransition = { - _callbacks: new Set() - }; - ReactSharedInternals.T = currentTransition; +if (enableAsyncActions) { + ContextOnlyDispatcher.useHostTransitionStatus = throwInvalidHookError; + ContextOnlyDispatcher.useFormState = throwInvalidHookError; + ContextOnlyDispatcher.useActionState = throwInvalidHookError; +} - { - ReactSharedInternals.T._updatedFibers = new Set(); - } // Optimistically update the pending state, similar to useTransition. - // This will be reverted automatically when all actions are finished. +if (enableAsyncActions) { + ContextOnlyDispatcher.useOptimistic = throwInvalidHookError; +} + +var HooksDispatcherOnMountInDEV = null; +var HooksDispatcherOnMountWithHookTypesInDEV = null; +var HooksDispatcherOnUpdateInDEV = null; +var HooksDispatcherOnRerenderInDEV = null; +var InvalidNestedHooksDispatcherOnMountInDEV = null; +var InvalidNestedHooksDispatcherOnUpdateInDEV = null; +var InvalidNestedHooksDispatcherOnRerenderInDEV = null; + +{ + var warnInvalidContextAccess = function () { + error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + }; + + var warnInvalidHookAccess = function () { + error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://react.dev/link/rules-of-hooks'); + }; + + HooksDispatcherOnMountInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + mountHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + mountHookTypesDev(); + checkDepsAreArrayDev(deps); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - setPendingState(true); + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; try { - var returnValue = action(prevState, payload); - - if ( - returnValue !== null && - typeof returnValue === "object" && // $FlowFixMe[method-unbinding] - typeof returnValue.then === "function" - ) { - var thenable = returnValue; - notifyTransitionCallbacks(currentTransition, thenable); // Attach a listener to read the return state of the action. As soon as - // this resolves, we can run the next action in the sequence. - - thenable.then( - function (nextState) { - actionQueue.state = nextState; - finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - }, - function () { - return finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - } - ); - setState(thenable); - } else { - setState(returnValue); - var nextState = returnValue; - actionQueue.state = nextState; - finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ); - } - } catch (error) { - // This is a trick to get the `useActionState` hook to rethrow the error. - // When it unwraps the thenable with the `use` algorithm, the error - // will be thrown. - var rejectedThenable = { - then: function () {}, - status: "rejected", - reason: error // $FlowFixMe: Not sure why this doesn't work - }; - setState(rejectedThenable); - finishRunningActionStateAction(actionQueue, setPendingState, setState); + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + mountHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + + try { + return mountState(initialState); } finally { - ReactSharedInternals.T = prevTransition; - - { - if (prevTransition === null && currentTransition._updatedFibers) { - var updatedFibersCount = currentTransition._updatedFibers.size; + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + mountHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + mountHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + mountHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + mountHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + mountHookTypesDev(); + return mountId(); + } + }; + + { + HooksDispatcherOnMountInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + mountHookTypesDev(); + return mountRefresh(); + }; + } - currentTransition._updatedFibers.clear(); + { + HooksDispatcherOnMountInDEV.useMemoCache = useMemoCache; + } - if (updatedFibersCount > 10) { - warn( - "Detected a large number of updates inside startTransition. " + - "If this is due to a subscription please re-write it to use React provided hooks. " + - "Otherwise concurrent mode guarantees are off the table." - ); - } - } - } - } - } + if (enableAsyncActions) { + HooksDispatcherOnMountInDEV.useHostTransitionStatus = useHostTransitionStatus; - function finishRunningActionStateAction( - actionQueue, - setPendingState, - setState - ) { - // The action finished running. Pop it from the queue and run the next pending - // action, if there are any. - var last = actionQueue.pending; + HooksDispatcherOnMountInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + mountHookTypesDev(); + return mountActionState(action, initialState); + }; - if (last !== null) { - var first = last.next; + HooksDispatcherOnMountInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + mountHookTypesDev(); + return mountActionState(action, initialState); + }; + } - if (first === last) { - // This was the last action in the queue. - actionQueue.pending = null; - } else { - // Remove the first node from the circular queue. - var next = first.next; - last.next = next; // Run the next action. + if (enableAsyncActions) { + HooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + mountHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + HooksDispatcherOnMountWithHookTypesInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - runActionStateAction( - actionQueue, - setPendingState, - setState, - next.payload - ); - } + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } - } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - function actionStateReducer(oldState, newState) { - return newState; - } + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return mountId(); + } + }; + + { + HooksDispatcherOnMountWithHookTypesInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return mountRefresh(); + }; + } - function mountActionState(action, initialStateProp, permalink) { - var initialState = initialStateProp; - // the `use` algorithm during render. + { + HooksDispatcherOnMountWithHookTypesInDEV.useMemoCache = useMemoCache; + } - var stateHook = mountWorkInProgressHook(); - stateHook.memoizedState = stateHook.baseState = initialState; // TODO: Typing this "correctly" results in recursion limit errors - // const stateQueue: UpdateQueue, S | Awaited> = { + if (enableAsyncActions) { + HooksDispatcherOnMountWithHookTypesInDEV.useHostTransitionStatus = useHostTransitionStatus; - var stateQueue = { - pending: null, - lanes: NoLanes, - dispatch: null, - lastRenderedReducer: actionStateReducer, - lastRenderedState: initialState - }; - stateHook.queue = stateQueue; - var setState = dispatchSetState.bind( - null, - currentlyRenderingFiber$1, - stateQueue - ); - stateQueue.dispatch = setState; // Pending state. This is used to store the pending state of the action. - // Tracked optimistically, like a transition pending state. - - var pendingStateHook = mountStateImpl(false); - var setPendingState = dispatchOptimisticSetState.bind( - null, - currentlyRenderingFiber$1, - false, - pendingStateHook.queue - ); // Action queue hook. This is used to queue pending actions. The queue is - // shared between all instances of the hook. Similar to a regular state queue, - // but different because the actions are run sequentially, and they run in - // an event instead of during render. - - var actionQueueHook = mountWorkInProgressHook(); - var actionQueue = { - state: initialState, - dispatch: null, - // circular - action: action, - pending: null - }; - actionQueueHook.queue = actionQueue; - var dispatch = dispatchActionState.bind( - null, - currentlyRenderingFiber$1, - actionQueue, - setPendingState, - setState - ); - actionQueue.dispatch = dispatch; // Stash the action function on the memoized state of the hook. We'll use this - // to detect when the action function changes so we can update it in - // an effect. - - actionQueueHook.memoizedState = action; - return [initialState, dispatch, false]; - } - - function updateActionState(action, initialState, permalink) { - var stateHook = updateWorkInProgressHook(); - var currentStateHook = currentHook; - return updateActionStateImpl(stateHook, currentStateHook, action); - } - - function updateActionStateImpl( - stateHook, - currentStateHook, - action, - initialState, - permalink - ) { - var _updateReducerImpl = updateReducerImpl( - stateHook, - currentStateHook, - actionStateReducer - ), - actionResult = _updateReducerImpl[0]; - - var _updateState = updateState(), - isPending = _updateState[0]; // This will suspend until the action finishes. - - var state = - typeof actionResult === "object" && - actionResult !== null && // $FlowFixMe[method-unbinding] - typeof actionResult.then === "function" - ? useThenable(actionResult) - : actionResult; - var actionQueueHook = updateWorkInProgressHook(); - var actionQueue = actionQueueHook.queue; - var dispatch = actionQueue.dispatch; // Check if a new action was passed. If so, update it in an effect. - - var prevAction = actionQueueHook.memoizedState; - - if (action !== prevAction) { - currentlyRenderingFiber$1.flags |= Passive$1; - pushEffect( - HasEffect | Passive, - actionStateActionEffect.bind(null, actionQueue, action), - createEffectInstance(), - null - ); - } - - return [state, dispatch, isPending]; - } - - function actionStateActionEffect(actionQueue, action) { - actionQueue.action = action; - } - - function rerenderActionState(action, initialState, permalink) { - // Unlike useState, useActionState doesn't support render phase updates. - // Also unlike useState, we need to replay all pending updates again in case - // the passthrough value changed. - // - // So instead of a forked re-render implementation that knows how to handle - // render phase udpates, we can use the same implementation as during a - // regular mount or update. - var stateHook = updateWorkInProgressHook(); - var currentStateHook = currentHook; + HooksDispatcherOnMountWithHookTypesInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return mountActionState(action, initialState); + }; + + HooksDispatcherOnMountWithHookTypesInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return mountActionState(action, initialState); + }; + } + + if (enableAsyncActions) { + HooksDispatcherOnMountWithHookTypesInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + HooksDispatcherOnUpdateInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - if (currentStateHook !== null) { - // This is an update. Process the update queue. - return updateActionStateImpl(stateHook, currentStateHook, action); + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - updateWorkInProgressHook(); // State - // This is a mount. No updates to process. + try { + return updateReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - var state = stateHook.memoizedState; - var actionQueueHook = updateWorkInProgressHook(); - var actionQueue = actionQueueHook.queue; - var dispatch = actionQueue.dispatch; // This may have changed during the rerender. + try { + return updateState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return updateDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return updateTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return updateId(); + } + }; + + { + HooksDispatcherOnUpdateInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - actionQueueHook.memoizedState = action; // For mount, pending is always false. + { + HooksDispatcherOnUpdateInDEV.useMemoCache = useMemoCache; + } - return [state, dispatch, false]; - } + if (enableAsyncActions) { + HooksDispatcherOnUpdateInDEV.useHostTransitionStatus = useHostTransitionStatus; - function pushEffect(tag, create, inst, deps) { - var effect = { - tag: tag, - create: create, - inst: inst, - deps: deps, - // Circular - next: null - }; - var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue; + HooksDispatcherOnUpdateInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return updateActionState(action); + }; - if (componentUpdateQueue === null) { - componentUpdateQueue = createFunctionComponentUpdateQueue(); - currentlyRenderingFiber$1.updateQueue = componentUpdateQueue; - componentUpdateQueue.lastEffect = effect.next = effect; - } else { - var lastEffect = componentUpdateQueue.lastEffect; + HooksDispatcherOnUpdateInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return updateActionState(action); + }; + } - if (lastEffect === null) { - componentUpdateQueue.lastEffect = effect.next = effect; - } else { - var firstEffect = lastEffect.next; - lastEffect.next = effect; - effect.next = firstEffect; - componentUpdateQueue.lastEffect = effect; - } + if (enableAsyncActions) { + HooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return updateOptimistic(passthrough, reducer); + }; + } + + HooksDispatcherOnRerenderInDEV = { + readContext: function (context) { + return readContext(context); + }, + use: use, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; - return effect; - } + try { + return rerenderReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; - function createEffectInstance() { - return { - destroy: undefined - }; - } + try { + return rerenderState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + updateHookTypesDev(); + return rerenderDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + updateHookTypesDev(); + return rerenderTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + updateHookTypesDev(); + return updateId(); + } + }; + + { + HooksDispatcherOnRerenderInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - function mountRef(initialValue) { - var hook = mountWorkInProgressHook(); - var ref = { - current: initialValue - }; - hook.memoizedState = ref; - return ref; - } + { + HooksDispatcherOnRerenderInDEV.useMemoCache = useMemoCache; + } - function updateRef(initialValue) { - var hook = updateWorkInProgressHook(); - return hook.memoizedState; - } + if (enableAsyncActions) { + HooksDispatcherOnRerenderInDEV.useHostTransitionStatus = useHostTransitionStatus; - function mountEffectImpl(fiberFlags, hookFlags, create, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - currentlyRenderingFiber$1.flags |= fiberFlags; - hook.memoizedState = pushEffect( - HasEffect | hookFlags, - create, - createEffectInstance(), - nextDeps - ); - } + HooksDispatcherOnRerenderInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + updateHookTypesDev(); + warnOnUseFormStateInDev(); + return rerenderActionState(action); + }; - function updateEffectImpl(fiberFlags, hookFlags, create, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var effect = hook.memoizedState; - var inst = effect.inst; // currentHook is null on initial mount when rerendering after a render phase - // state update or for strict mode. + HooksDispatcherOnRerenderInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + updateHookTypesDev(); + return rerenderActionState(action); + }; + } - if (currentHook !== null) { - if (nextDeps !== null) { - var prevEffect = currentHook.memoizedState; - var prevDeps = prevEffect.deps; + if (enableAsyncActions) { + HooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + updateHookTypesDev(); + return rerenderOptimistic(passthrough, reducer); + }; + } + + InvalidNestedHooksDispatcherOnMountInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - if (areHookInputsEqual(nextDeps, prevDeps)) { - hook.memoizedState = pushEffect(hookFlags, create, inst, nextDeps); - return; - } - } + try { + return mountMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - currentlyRenderingFiber$1.flags |= fiberFlags; - hook.memoizedState = pushEffect( - HasEffect | hookFlags, - create, - inst, - nextDeps - ); - } + try { + return mountReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountRef(initialValue); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; - function mountEffect(create, deps) { - if ( - (currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode && - (currentlyRenderingFiber$1.mode & NoStrictPassiveEffectsMode) === NoMode - ) { - mountEffectImpl( - MountPassiveDev | Passive$1 | PassiveStatic, - Passive, - create, - deps - ); - } else { - mountEffectImpl(Passive$1 | PassiveStatic, Passive, create, deps); - } - } + try { + return mountState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountId(); + } + }; + + { + InvalidNestedHooksDispatcherOnMountInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + mountHookTypesDev(); + return mountRefresh(); + }; + } - function updateEffect(create, deps) { - updateEffectImpl(Passive$1, Passive, create, deps); - } + { + InvalidNestedHooksDispatcherOnMountInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } - function mountInsertionEffect(create, deps) { - mountEffectImpl(Update, Insertion, create, deps); - } + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnMountInDEV.useHostTransitionStatus = useHostTransitionStatus; - function updateInsertionEffect(create, deps) { - return updateEffectImpl(Update, Insertion, create, deps); - } + InvalidNestedHooksDispatcherOnMountInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountActionState(action, initialState); + }; - function mountLayoutEffect(create, deps) { - var fiberFlags = Update | LayoutStatic; + InvalidNestedHooksDispatcherOnMountInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountActionState(action, initialState); + }; + } + + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + mountHookTypesDev(); + return mountOptimistic(passthrough); + }; + } + + InvalidNestedHooksDispatcherOnUpdateInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { - fiberFlags |= MountLayoutDev; + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - return mountEffectImpl(fiberFlags, Layout, create, deps); - } - - function updateLayoutEffect(create, deps) { - return updateEffectImpl(Update, Layout, create, deps); - } - - function imperativeHandleEffect(create, ref) { - if (typeof ref === "function") { - var refCallback = ref; - var inst = create(); - refCallback(inst); - return function () { - refCallback(null); - }; - } else if (ref !== null && ref !== undefined) { - var refObject = ref; + try { + return updateReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - { - if (!refObject.hasOwnProperty("current")) { - error( - "Expected useImperativeHandle() first argument to either be a " + - "ref callback or React.createRef() object. Instead received: %s.", - "an object with keys {" + Object.keys(refObject).join(", ") + "}" - ); - } - } + try { + return updateState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateId(); + } + }; + + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - var _inst = create(); + { + InvalidNestedHooksDispatcherOnUpdateInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } - refObject.current = _inst; - return function () { - refObject.current = null; - }; - } - } + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnUpdateInDEV.useHostTransitionStatus = useHostTransitionStatus; - function mountImperativeHandle(ref, create, deps) { - { - if (typeof create !== "function") { - error( - "Expected useImperativeHandle() second argument to be a function " + - "that creates a handle. Instead received: %s.", - create !== null ? typeof create : "null" - ); - } - } // TODO: If deps are provided, should we skip comparing the ref itself? + InvalidNestedHooksDispatcherOnUpdateInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateActionState(action); + }; - var effectDeps = - deps !== null && deps !== undefined ? deps.concat([ref]) : null; - var fiberFlags = Update | LayoutStatic; + InvalidNestedHooksDispatcherOnUpdateInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateActionState(action); + }; + } + + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateOptimistic(passthrough, reducer); + }; + } + + InvalidNestedHooksDispatcherOnRerenderInDEV = { + readContext: function (context) { + warnInvalidContextAccess(); + return readContext(context); + }, + use: function (usable) { + warnInvalidHookAccess(); + return use(usable); + }, + useCallback: function (callback, deps) { + currentHookNameInDev = 'useCallback'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateCallback(callback, deps); + }, + useContext: function (context) { + currentHookNameInDev = 'useContext'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return readContext(context); + }, + useEffect: function (create, deps) { + currentHookNameInDev = 'useEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateEffect(create, deps); + }, + useImperativeHandle: function (ref, create, deps) { + currentHookNameInDev = 'useImperativeHandle'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateImperativeHandle(ref, create, deps); + }, + useInsertionEffect: function (create, deps) { + currentHookNameInDev = 'useInsertionEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateInsertionEffect(create, deps); + }, + useLayoutEffect: function (create, deps) { + currentHookNameInDev = 'useLayoutEffect'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateLayoutEffect(create, deps); + }, + useMemo: function (create, deps) { + currentHookNameInDev = 'useMemo'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - if ((currentlyRenderingFiber$1.mode & StrictEffectsMode) !== NoMode) { - fiberFlags |= MountLayoutDev; + try { + return updateMemo(create, deps); + } finally { + ReactSharedInternals.H = prevDispatcher; } + }, + useReducer: function (reducer, initialArg, init) { + currentHookNameInDev = 'useReducer'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - mountEffectImpl( - fiberFlags, - Layout, - imperativeHandleEffect.bind(null, create, ref), - effectDeps - ); - } + try { + return rerenderReducer(reducer, initialArg, init); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useRef: function (initialValue) { + currentHookNameInDev = 'useRef'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateRef(); + }, + useState: function (initialState) { + currentHookNameInDev = 'useState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - function updateImperativeHandle(ref, create, deps) { - { - if (typeof create !== "function") { - error( - "Expected useImperativeHandle() second argument to be a function " + - "that creates a handle. Instead received: %s.", - create !== null ? typeof create : "null" - ); - } - } // TODO: If deps are provided, should we skip comparing the ref itself? + try { + return rerenderState(initialState); + } finally { + ReactSharedInternals.H = prevDispatcher; + } + }, + useDebugValue: function (value, formatterFn) { + currentHookNameInDev = 'useDebugValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateDebugValue(); + }, + useDeferredValue: function (value, initialValue) { + currentHookNameInDev = 'useDeferredValue'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderDeferredValue(value, initialValue); + }, + useTransition: function () { + currentHookNameInDev = 'useTransition'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderTransition(); + }, + useSyncExternalStore: function (subscribe, getSnapshot, getServerSnapshot) { + currentHookNameInDev = 'useSyncExternalStore'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateSyncExternalStore(subscribe, getSnapshot); + }, + useId: function () { + currentHookNameInDev = 'useId'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return updateId(); + } + }; + + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useCacheRefresh = function useCacheRefresh() { + currentHookNameInDev = 'useCacheRefresh'; + updateHookTypesDev(); + return updateRefresh(); + }; + } - var effectDeps = - deps !== null && deps !== undefined ? deps.concat([ref]) : null; - updateEffectImpl( - Update, - Layout, - imperativeHandleEffect.bind(null, create, ref), - effectDeps - ); - } + { + InvalidNestedHooksDispatcherOnRerenderInDEV.useMemoCache = function (size) { + warnInvalidHookAccess(); + return useMemoCache(size); + }; + } - function mountDebugValue(value, formatterFn) { - // This hook is normally a no-op. - // The react-debug-hooks package injects its own implementation - // so that e.g. DevTools can display custom hook values. - } + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnRerenderInDEV.useHostTransitionStatus = useHostTransitionStatus; - var updateDebugValue = mountDebugValue; + InvalidNestedHooksDispatcherOnRerenderInDEV.useFormState = function useFormState(action, initialState, permalink) { + currentHookNameInDev = 'useFormState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderActionState(action); + }; - function mountCallback(callback, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - hook.memoizedState = [callback, nextDeps]; - return callback; - } + InvalidNestedHooksDispatcherOnRerenderInDEV.useActionState = function useActionState(action, initialState, permalink) { + currentHookNameInDev = 'useActionState'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderActionState(action); + }; + } + + if (enableAsyncActions) { + InvalidNestedHooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic(passthrough, reducer) { + currentHookNameInDev = 'useOptimistic'; + warnInvalidHookAccess(); + updateHookTypesDev(); + return rerenderOptimistic(passthrough, reducer); + }; + } +} - function updateCallback(callback, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var prevState = hook.memoizedState; +var now = Scheduler.unstable_now; +var commitTime = 0; +var layoutEffectStartTime = -1; +var profilerStartTime = -1; +var passiveEffectStartTime = -1; +/** + * Tracks whether the current update was a nested/cascading update (scheduled from a layout effect). + * + * The overall sequence is: + * 1. render + * 2. commit (and call `onRender`, `onCommit`) + * 3. check for nested updates + * 4. flush passive effects (and call `onPostCommit`) + * + * Nested updates are identified in step 3 above, + * but step 4 still applies to the work that was just committed. + * We use two flags to track nested updates then: + * one tracks whether the upcoming update is a nested update, + * and the other tracks whether the current update was a nested update. + * The first value gets synced to the second at the start of the render phase. + */ - if (nextDeps !== null) { - var prevDeps = prevState[1]; +var currentUpdateIsNested = false; +var nestedUpdateScheduled = false; - if (areHookInputsEqual(nextDeps, prevDeps)) { - return prevState[0]; - } - } +function isCurrentUpdateNested() { + return currentUpdateIsNested; +} - hook.memoizedState = [callback, nextDeps]; - return callback; - } +function markNestedUpdateScheduled() { + { + nestedUpdateScheduled = true; + } +} - function mountMemo(nextCreate, deps) { - var hook = mountWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var nextValue = nextCreate(); +function resetNestedUpdateFlag() { + { + currentUpdateIsNested = false; + nestedUpdateScheduled = false; + } +} - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - nextCreate(); - setIsStrictModeForDevtools(false); - } +function syncNestedUpdateFlag() { + { + currentUpdateIsNested = nestedUpdateScheduled; + nestedUpdateScheduled = false; + } +} - hook.memoizedState = [nextValue, nextDeps]; - return nextValue; - } +function getCommitTime() { + return commitTime; +} - function updateMemo(nextCreate, deps) { - var hook = updateWorkInProgressHook(); - var nextDeps = deps === undefined ? null : deps; - var prevState = hook.memoizedState; // Assume these are defined. If they're not, areHookInputsEqual will warn. +function recordCommitTime() { - if (nextDeps !== null) { - var prevDeps = prevState[1]; + commitTime = now(); +} - if (areHookInputsEqual(nextDeps, prevDeps)) { - return prevState[0]; - } - } +function startProfilerTimer(fiber) { - var nextValue = nextCreate(); + profilerStartTime = now(); - if (shouldDoubleInvokeUserFnsInHooksDEV) { - setIsStrictModeForDevtools(true); - nextCreate(); - setIsStrictModeForDevtools(false); - } + if (fiber.actualStartTime < 0) { + fiber.actualStartTime = now(); + } +} - hook.memoizedState = [nextValue, nextDeps]; - return nextValue; - } +function stopProfilerTimerIfRunning(fiber) { - function mountDeferredValue(value, initialValue) { - var hook = mountWorkInProgressHook(); - return mountDeferredValueImpl(hook, value, initialValue); - } + profilerStartTime = -1; +} - function updateDeferredValue(value, initialValue) { - var hook = updateWorkInProgressHook(); - var resolvedCurrentHook = currentHook; - var prevValue = resolvedCurrentHook.memoizedState; - return updateDeferredValueImpl(hook, prevValue, value, initialValue); - } +function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) { - function rerenderDeferredValue(value, initialValue) { - var hook = updateWorkInProgressHook(); + if (profilerStartTime >= 0) { + var elapsedTime = now() - profilerStartTime; + fiber.actualDuration += elapsedTime; - if (currentHook === null) { - // This is a rerender during a mount. - return mountDeferredValueImpl(hook, value, initialValue); - } else { - // This is a rerender during an update. - var prevValue = currentHook.memoizedState; - return updateDeferredValueImpl(hook, prevValue, value, initialValue); - } - } - - function mountDeferredValueImpl(hook, value, initialValue) { - if ( - // When `initialValue` is provided, we defer the initial render even if the - // current render is not synchronous. - initialValue !== undefined && // However, to avoid waterfalls, we do not defer if this render - // was itself spawned by an earlier useDeferredValue. Check if DeferredLane - // is part of the render lanes. - !includesSomeLane(renderLanes, DeferredLane) - ) { - // Render with the initial value - hook.memoizedState = initialValue; // Schedule a deferred render to switch to the final value. - - var deferredLane = requestDeferredLane(); - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - deferredLane - ); - markSkippedUpdateLanes(deferredLane); - return initialValue; - } else { - hook.memoizedState = value; - return value; - } + if (overrideBaseTime) { + fiber.selfBaseDuration = elapsedTime; } - function updateDeferredValueImpl(hook, prevValue, value, initialValue) { - if (objectIs(value, prevValue)) { - // The incoming value is referentially identical to the currently rendered - // value, so we can bail out quickly. - return value; - } else { - // Received a new value that's different from the current value. - // Check if we're inside a hidden tree - if (isCurrentTreeHidden()) { - // Revealing a prerendered tree is considered the same as mounting new - // one, so we reuse the "mount" path in this case. - var resultValue = mountDeferredValueImpl(hook, value, initialValue); // Unlike during an actual mount, we need to mark this as an update if - // the value changed. - - if (!objectIs(resultValue, prevValue)) { - markWorkInProgressReceivedUpdate(); - } + profilerStartTime = -1; + } +} - return resultValue; - } +function recordLayoutEffectDuration(fiber) { - var shouldDeferValue = !includesOnlyNonUrgentLanes(renderLanes); + if (layoutEffectStartTime >= 0) { + var elapsedTime = now() - layoutEffectStartTime; + layoutEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor + // Or the root (for the DevTools Profiler to read) - if (shouldDeferValue) { - // This is an urgent update. Since the value has changed, keep using the - // previous value and spawn a deferred render to update it later. - // Schedule a deferred render - var deferredLane = requestDeferredLane(); - currentlyRenderingFiber$1.lanes = mergeLanes( - currentlyRenderingFiber$1.lanes, - deferredLane - ); - markSkippedUpdateLanes(deferredLane); // Reuse the previous value. We do not need to mark this as an update, - // because we did not render a new value. + var parentFiber = fiber.return; - return prevValue; - } else { - // This is not an urgent update, so we can use the latest value regardless - // of what it is. No need to defer it. - // Mark this as an update to prevent the fiber from bailing out. - markWorkInProgressReceivedUpdate(); - hook.memoizedState = value; - return value; - } - } - } - - function startTransition( - fiber, - queue, - pendingState, - finishedState, - callback, - options - ) { - var previousPriority = getCurrentUpdatePriority(); - setCurrentUpdatePriority( - higherEventPriority(previousPriority, ContinuousEventPriority) - ); - var prevTransition = ReactSharedInternals.T; - var currentTransition = { - _callbacks: new Set() - }; + while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + root.effectDuration += elapsedTime; + return; - if (enableAsyncActions) { - // We don't really need to use an optimistic update here, because we - // schedule a second "revert" update below (which we use to suspend the - // transition until the async action scope has finished). But we'll use an - // optimistic update anyway to make it less likely the behavior accidentally - // diverges; for example, both an optimistic update and this one should - // share the same lane. - ReactSharedInternals.T = currentTransition; - dispatchOptimisticSetState(fiber, false, queue, pendingState); - } else { - ReactSharedInternals.T = null; - dispatchSetState(fiber, queue, pendingState); - ReactSharedInternals.T = currentTransition; + case Profiler: + var parentStateNode = parentFiber.stateNode; + parentStateNode.effectDuration += elapsedTime; + return; } - { - currentTransition._updatedFibers = new Set(); - } + parentFiber = parentFiber.return; + } + } +} - try { - if (enableAsyncActions) { - var returnValue = callback(); // Check if we're inside an async action scope. If so, we'll entangle - // this new action with the existing scope. - // - // If we're not already inside an async action scope, and this action is - // async, then we'll create a new async scope. - // - // In the async case, the resulting render will suspend until the async - // action scope has finished. - - if ( - returnValue !== null && - typeof returnValue === "object" && - typeof returnValue.then === "function" - ) { - var thenable = returnValue; - notifyTransitionCallbacks(currentTransition, thenable); // Create a thenable that resolves to `finishedState` once the async - // action has completed. - - var thenableForFinishedState = chainThenableValue( - thenable, - finishedState - ); - dispatchSetState(fiber, queue, thenableForFinishedState); - } else { - dispatchSetState(fiber, queue, finishedState); - } - } else { - // Async actions are not enabled. - dispatchSetState(fiber, queue, finishedState); - callback(); - } - } catch (error) { - if (enableAsyncActions) { - // This is a trick to get the `useTransition` hook to rethrow the error. - // When it unwraps the thenable with the `use` algorithm, the error - // will be thrown. - var rejectedThenable = { - then: function () {}, - status: "rejected", - reason: error - }; - dispatchSetState(fiber, queue, rejectedThenable); - } else { - // The error rethrowing behavior is only enabled when the async actions - // feature is on, even for sync actions. - throw error; - } - } finally { - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; +function recordPassiveEffectDuration(fiber) { - { - if (prevTransition === null && currentTransition._updatedFibers) { - var updatedFibersCount = currentTransition._updatedFibers.size; + if (passiveEffectStartTime >= 0) { + var elapsedTime = now() - passiveEffectStartTime; + passiveEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor + // Or the root (for the DevTools Profiler to read) - currentTransition._updatedFibers.clear(); + var parentFiber = fiber.return; - if (updatedFibersCount > 10) { - warn( - "Detected a large number of updates inside startTransition. " + - "If this is due to a subscription please re-write it to use React provided hooks. " + - "Otherwise concurrent mode guarantees are off the table." - ); - } - } - } - } - } + while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; - function mountTransition() { - var stateHook = mountStateImpl(false); // The `start` method never changes. + if (root !== null) { + root.passiveEffectDuration += elapsedTime; + } - var start = startTransition.bind( - null, - currentlyRenderingFiber$1, - stateHook.queue, - true, - false - ); - var hook = mountWorkInProgressHook(); - hook.memoizedState = start; - return [false, start]; - } + return; - function updateTransition() { - var _updateState2 = updateState(), - booleanOrThenable = _updateState2[0]; + case Profiler: + var parentStateNode = parentFiber.stateNode; - var hook = updateWorkInProgressHook(); - var start = hook.memoizedState; - var isPending = - typeof booleanOrThenable === "boolean" - ? booleanOrThenable // This will suspend until the async action scope has finished. - : useThenable(booleanOrThenable); - return [isPending, start]; - } + if (parentStateNode !== null) { + // Detached fibers have their state node cleared out. + // In this case, the return pointer is also cleared out, + // so we won't be able to report the time spent in this Profiler's subtree. + parentStateNode.passiveEffectDuration += elapsedTime; + } - function rerenderTransition() { - var _rerenderState = rerenderState(), - booleanOrThenable = _rerenderState[0]; + return; + } - var hook = updateWorkInProgressHook(); - var start = hook.memoizedState; - var isPending = - typeof booleanOrThenable === "boolean" - ? booleanOrThenable // This will suspend until the async action scope has finished. - : useThenable(booleanOrThenable); - return [isPending, start]; + parentFiber = parentFiber.return; } + } +} - function useHostTransitionStatus() { - if (!enableAsyncActions) { - throw new Error("Not implemented."); - } +function startLayoutEffectTimer() { - var status = readContext(HostTransitionContext); - return status !== null ? status : NotPendingTransition; - } + layoutEffectStartTime = now(); +} - function mountId() { - var hook = mountWorkInProgressHook(); - var root = getWorkInProgressRoot(); // TODO: In Fizz, id generation is specific to each server config. Maybe we - // should do this in Fiber, too? Deferring this decision for now because - // there's no other place to store the prefix except for an internal field on - // the public createRoot object, which the fiber tree does not currently have - // a reference to. +function startPassiveEffectTimer() { - var identifierPrefix = root.identifierPrefix; - var id; + passiveEffectStartTime = now(); +} - { - // Use a lowercase r prefix for client-generated ids. - var globalClientId = globalClientIdCounter++; - id = ":" + identifierPrefix + "r" + globalClientId.toString(32) + ":"; - } +function transferActualDuration(fiber) { + // Transfer time spent rendering these children so we don't lose it + // after we rerender. This is used as a helper in special cases + // where we should count the work of multiple passes. + var child = fiber.child; + + while (child) { + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + fiber.actualDuration += child.actualDuration; + child = child.sibling; + } +} - hook.memoizedState = id; - return id; - } +var fakeInternalInstance = {}; +var didWarnAboutStateAssignmentForComponent; +var didWarnAboutUninitializedState; +var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate; +var didWarnAboutLegacyLifecyclesAndDerivedState; +var didWarnAboutUndefinedDerivedState; +var didWarnAboutDirectlyAssigningPropsToState; +var didWarnAboutContextTypeAndContextTypes; +var didWarnAboutInvalidateContextType; +var didWarnOnInvalidCallback; + +{ + didWarnAboutStateAssignmentForComponent = new Set(); + didWarnAboutUninitializedState = new Set(); + didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set(); + didWarnAboutLegacyLifecyclesAndDerivedState = new Set(); + didWarnAboutDirectlyAssigningPropsToState = new Set(); + didWarnAboutUndefinedDerivedState = new Set(); + didWarnAboutContextTypeAndContextTypes = new Set(); + didWarnAboutInvalidateContextType = new Set(); + didWarnOnInvalidCallback = new Set(); // This is so gross but it's at least non-critical and can be removed if + // it causes problems. This is meant to give a nicer error message for + // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component, + // ...)) which otherwise throws a "_processChildContext is not a function" + // exception. + + Object.defineProperty(fakeInternalInstance, '_processChildContext', { + enumerable: false, + value: function () { + throw new Error('_processChildContext is not available in React 16+. This likely ' + 'means you have multiple copies of React and are attempting to nest ' + 'a React 15 tree inside a React 16 tree using ' + "unstable_renderSubtreeIntoContainer, which isn't supported. Try " + 'to make sure you have only one copy of React (and ideally, switch ' + 'to ReactDOM.createPortal).'); + } + }); + Object.freeze(fakeInternalInstance); +} - function updateId() { - var hook = updateWorkInProgressHook(); - var id = hook.memoizedState; - return id; - } +function warnOnInvalidCallback(callback) { + { + if (callback === null || typeof callback === 'function') { + return; + } // eslint-disable-next-line react-internal/safe-string-coercion - function mountRefresh() { - var hook = mountWorkInProgressHook(); - var refresh = (hook.memoizedState = refreshCache.bind( - null, - currentlyRenderingFiber$1 - )); - return refresh; - } - function updateRefresh() { - var hook = updateWorkInProgressHook(); - return hook.memoizedState; - } + var key = String(callback); - function refreshCache(fiber, seedKey, seedValue) { - // TODO: Consider warning if the refresh is at discrete priority, or if we - // otherwise suspect that it wasn't batched properly. + if (!didWarnOnInvalidCallback.has(key)) { + didWarnOnInvalidCallback.add(key); - var provider = fiber.return; + error('Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback); + } + } +} - while (provider !== null) { - switch (provider.tag) { - case CacheComponent: - case HostRoot: { - // Schedule an update on the cache boundary to trigger a refresh. - var lane = requestUpdateLane(provider); - var refreshUpdate = createUpdate(lane); - var root = enqueueUpdate(provider, refreshUpdate, lane); +function warnOnUndefinedDerivedState(type, partialState) { + { + if (partialState === undefined) { + var componentName = getComponentNameFromType(type) || 'Component'; - if (root !== null) { - scheduleUpdateOnFiber(root, provider, lane); - entangleTransitions(root, provider, lane); - } // TODO: If a refresh never commits, the new cache created here must be - // released. A simple case is start refreshing a cache boundary, but then - // unmount that boundary before the refresh completes. + if (!didWarnAboutUndefinedDerivedState.has(componentName)) { + didWarnAboutUndefinedDerivedState.add(componentName); - var seededCache = createCache(); + error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', componentName); + } + } + } +} - if (seedKey !== null && seedKey !== undefined && root !== null) { - { - { - error( - "The seed argument is not enabled outside experimental channels." - ); - } - } - } +function applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, nextProps) { + var prevState = workInProgress.memoizedState; + var partialState = getDerivedStateFromProps(nextProps, prevState); - var payload = { - cache: seededCache - }; - refreshUpdate.payload = payload; - return; - } - } + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - provider = provider.return; - } // TODO: Warn if unmounted? + try { + // Invoke the function an extra time to help detect side-effects. + partialState = getDerivedStateFromProps(nextProps, prevState); + } finally { + setIsStrictModeForDevtools(false); + } } - function dispatchReducerAction(fiber, queue, action) { - { - if (typeof arguments[3] === "function") { - error( - "State updates from the useState() and useReducer() Hooks don't support the " + - "second callback argument. To execute a side effect after " + - "rendering, declare it in the component body with useEffect()." - ); - } - } - - var lane = requestUpdateLane(fiber); - var update = { - lane: lane, - revertLane: NoLane, - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; + warnOnUndefinedDerivedState(ctor, partialState); + } // Merge the partial state and the previous state. - if (isRenderPhaseUpdate(fiber)) { - enqueueRenderPhaseUpdate(queue, update); - } else { - var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitionUpdate(root, queue, lane); - } - } + var memoizedState = partialState === null || partialState === undefined ? prevState : assign({}, prevState, partialState); + workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the + // base state. - markUpdateInDevTools(fiber, lane); - } + if (workInProgress.lanes === NoLanes) { + // Queue is always non-null for classes + var updateQueue = workInProgress.updateQueue; + updateQueue.baseState = memoizedState; + } +} - function dispatchSetState(fiber, queue, action) { +var classComponentUpdater = { + isMounted: isMounted, + // $FlowFixMe[missing-local-annot] + enqueueSetState: function (inst, payload, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.payload = payload; + + if (callback !== undefined && callback !== null) { { - if (typeof arguments[3] === "function") { - error( - "State updates from the useState() and useReducer() Hooks don't support the " + - "second callback argument. To execute a side effect after " + - "rendering, declare it in the component body with useEffect()." - ); - } - } - - var lane = requestUpdateLane(fiber); - var update = { - lane: lane, - revertLane: NoLane, - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; + warnOnInvalidCallback(callback); + } - if (isRenderPhaseUpdate(fiber)) { - enqueueRenderPhaseUpdate(queue, update); - } else { - var alternate = fiber.alternate; + update.callback = callback; + } - if ( - fiber.lanes === NoLanes && - (alternate === null || alternate.lanes === NoLanes) - ) { - // The queue is currently empty, which means we can eagerly compute the - // next state before entering the render phase. If the new state is the - // same as the current state, we may be able to bail out entirely. - var lastRenderedReducer = queue.lastRenderedReducer; + var root = enqueueUpdate(fiber, update, lane); - if (lastRenderedReducer !== null) { - var prevDispatcher = null; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); + } - { - prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = - InvalidNestedHooksDispatcherOnUpdateInDEV; - } + { + markStateUpdateScheduled(fiber, lane); + } + }, + enqueueReplaceState: function (inst, payload, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.tag = ReplaceState; + update.payload = payload; - try { - var currentState = queue.lastRenderedState; - var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute - // it, on the update object. If the reducer hasn't changed by the - // time we enter the render phase, then the eager state can be used - // without calling the reducer again. - - update.hasEagerState = true; - update.eagerState = eagerState; - - if (objectIs(eagerState, currentState)) { - // Fast path. We can bail out without scheduling React to re-render. - // It's still possible that we'll need to rebase this update later, - // if the component re-renders for a different reason and by that - // time the reducer has changed. - // TODO: Do we still need to entangle transitions in this case? - enqueueConcurrentHookUpdateAndEagerlyBailout( - fiber, - queue, - update - ); - return; - } - } catch (error) { - // Suppress the error. It will throw again in the render phase. - } finally { - { - ReactSharedInternals.H = prevDispatcher; - } - } - } - } + if (callback !== undefined && callback !== null) { + { + warnOnInvalidCallback(callback); + } - var root = enqueueConcurrentHookUpdate(fiber, queue, update, lane); + update.callback = callback; + } - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitionUpdate(root, queue, lane); - } - } + var root = enqueueUpdate(fiber, update, lane); - markUpdateInDevTools(fiber, lane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); } - function dispatchOptimisticSetState( - fiber, - throwIfDuringRender, - queue, - action - ) { - var transition = requestCurrentTransition(); + { + markStateUpdateScheduled(fiber, lane); + } + }, + // $FlowFixMe[missing-local-annot] + enqueueForceUpdate: function (inst, callback) { + var fiber = get(inst); + var lane = requestUpdateLane(fiber); + var update = createUpdate(lane); + update.tag = ForceUpdate; + if (callback !== undefined && callback !== null) { { - if (transition === null) { - // An optimistic update occurred, but startTransition is not on the stack. - // There are two likely scenarios. - // One possibility is that the optimistic update is triggered by a regular - // event handler (e.g. `onSubmit`) instead of an action. This is a mistake - // and we will warn. - // The other possibility is the optimistic update is inside an async - // action, but after an `await`. In this case, we can make it "just work" - // by associating the optimistic update with the pending async action. - // Technically it's possible that the optimistic update is unrelated to - // the pending action, but we don't have a way of knowing this for sure - // because browsers currently do not provide a way to track async scope. - // (The AsyncContext proposal, if it lands, will solve this in the - // future.) However, this is no different than the problem of unrelated - // transitions being grouped together — it's not wrong per se, but it's - // not ideal. - // Once AsyncContext starts landing in browsers, we will provide better - // warnings in development for these cases. - if (peekEntangledActionLane() !== NoLane); - else { - // There's no pending async action. The most likely cause is that we're - // inside a regular event handler (e.g. onSubmit) instead of an action. - error( - "An optimistic state update occurred outside a transition or " + - "action. To fix, move the update to an action, or wrap " + - "with startTransition." - ); - } - } + warnOnInvalidCallback(callback); } - var update = { - // An optimistic update commits synchronously. - lane: SyncLane, - // After committing, the optimistic update is "reverted" using the same - // lane as the transition it's associated with. - revertLane: requestTransitionLane(), - action: action, - hasEagerState: false, - eagerState: null, - next: null - }; - - if (isRenderPhaseUpdate(fiber)) { - // When calling startTransition during render, this warns instead of - // throwing because throwing would be a breaking change. setOptimisticState - // is a new API so it's OK to throw. - if (throwIfDuringRender) { - throw new Error("Cannot update optimistic state while rendering."); - } else { - // startTransition was called during render. We don't need to do anything - // besides warn here because the render phase update would be overidden by - // the second update, anyway. We can remove this branch and make it throw - // in a future release. - { - error("Cannot call startTransition while rendering."); - } - } - } else { - var root = enqueueConcurrentHookUpdate(fiber, queue, update, SyncLane); + update.callback = callback; + } - if (root !== null) { - // NOTE: The optimistic update implementation assumes that the transition - // will never be attempted before the optimistic update. This currently - // holds because the optimistic update is always synchronous. If we ever - // change that, we'll need to account for this. - scheduleUpdateOnFiber(root, fiber, SyncLane); // Optimistic updates are always synchronous, so we don't need to call - // entangleTransitionUpdate here. - } - } + var root = enqueueUpdate(fiber, update, lane); - markUpdateInDevTools(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, lane); + entangleTransitions(root, fiber, lane); } - function isRenderPhaseUpdate(fiber) { - var alternate = fiber.alternate; - return ( - fiber === currentlyRenderingFiber$1 || - (alternate !== null && alternate === currentlyRenderingFiber$1) - ); + { + markForceUpdateScheduled(fiber, lane); } + } +}; - function enqueueRenderPhaseUpdate(queue, update) { - // This is a render phase update. Stash it in a lazily-created map of - // queue -> linked list of updates. After this render pass, we'll restart - // and apply the stashed updates on top of the work-in-progress hook. - didScheduleRenderPhaseUpdateDuringThisPass = - didScheduleRenderPhaseUpdate = true; - var pending = queue.pending; +function checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) { + var instance = workInProgress.stateNode; - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; + if (typeof instance.shouldComponentUpdate === 'function') { + var shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext); + + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); + + try { + // Invoke the function an extra time to help detect side-effects. + shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext); + } finally { + setIsStrictModeForDevtools(false); + } } - queue.pending = update; - } // TODO: Move to ReactFiberConcurrentUpdates? + if (shouldUpdate === undefined) { + error('%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', getComponentNameFromType(ctor) || 'Component'); + } + } - function entangleTransitionUpdate(root, queue, lane) { - if (isTransitionLane(lane)) { - var queueLanes = queue.lanes; // If any entangled lanes are no longer pending on the root, then they - // must have finished. We can remove them from the shared queue, which - // represents a superset of the actually pending lanes. In some cases we - // may entangle more than we need to, but that's OK. In fact it's worse if - // we *don't* entangle when we should. + return shouldUpdate; + } - queueLanes = intersectLanes(queueLanes, root.pendingLanes); // Entangle the new transition lane with the other transition lanes. + if (ctor.prototype && ctor.prototype.isPureReactComponent) { + return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState); + } - var newQueueLanes = mergeLanes(queueLanes, lane); - queue.lanes = newQueueLanes; // Even if queue.lanes already include lane, we don't know for certain if - // the lane finished since the last time we entangled it. So we need to - // entangle it again, just to be sure. + return true; +} - markRootEntangled(root, newQueueLanes); - } - } +function checkClassInstance(workInProgress, ctor, newProps) { + var instance = workInProgress.stateNode; - function markUpdateInDevTools(fiber, lane, action) { - { - markStateUpdateScheduled(fiber, lane); - } - } - - var ContextOnlyDispatcher = { - readContext: readContext, - use: use, - useCallback: throwInvalidHookError, - useContext: throwInvalidHookError, - useEffect: throwInvalidHookError, - useImperativeHandle: throwInvalidHookError, - useLayoutEffect: throwInvalidHookError, - useInsertionEffect: throwInvalidHookError, - useMemo: throwInvalidHookError, - useReducer: throwInvalidHookError, - useRef: throwInvalidHookError, - useState: throwInvalidHookError, - useDebugValue: throwInvalidHookError, - useDeferredValue: throwInvalidHookError, - useTransition: throwInvalidHookError, - useSyncExternalStore: throwInvalidHookError, - useId: throwInvalidHookError - }; + { + var name = getComponentNameFromType(ctor) || 'Component'; + var renderPresent = instance.render; - { - ContextOnlyDispatcher.useCacheRefresh = throwInvalidHookError; + if (!renderPresent) { + if (ctor.prototype && typeof ctor.prototype.render === 'function') { + error('No `render` method found on the %s ' + 'instance: did you accidentally return an object from the constructor?', name); + } else { + error('No `render` method found on the %s ' + 'instance: you may have forgotten to define `render`.', name); + } } - { - ContextOnlyDispatcher.useMemoCache = throwInvalidHookError; + if (instance.getInitialState && !instance.getInitialState.isReactClassApproved && !instance.state) { + error('getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name); } - if (enableAsyncActions) { - ContextOnlyDispatcher.useHostTransitionStatus = throwInvalidHookError; - ContextOnlyDispatcher.useFormState = throwInvalidHookError; - ContextOnlyDispatcher.useActionState = throwInvalidHookError; + if (instance.getDefaultProps && !instance.getDefaultProps.isReactClassApproved) { + error('getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name); } - if (enableAsyncActions) { - ContextOnlyDispatcher.useOptimistic = throwInvalidHookError; + if (instance.propTypes) { + error('propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name); } - var HooksDispatcherOnMountInDEV = null; - var HooksDispatcherOnMountWithHookTypesInDEV = null; - var HooksDispatcherOnUpdateInDEV = null; - var HooksDispatcherOnRerenderInDEV = null; - var InvalidNestedHooksDispatcherOnMountInDEV = null; - var InvalidNestedHooksDispatcherOnUpdateInDEV = null; - var InvalidNestedHooksDispatcherOnRerenderInDEV = null; + if (instance.contextType) { + error('contextType was defined as an instance property on %s. Use a static ' + 'property to define contextType instead.', name); + } { - var warnInvalidContextAccess = function () { - error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - }; + if (instance.contextTypes) { + error('contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name); + } - var warnInvalidHookAccess = function () { - error( - "Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. " + - "You can only call Hooks at the top level of your React function. " + - "For more information, see " + - "https://react.dev/link/rules-of-hooks" - ); - }; + if (ctor.contextType && ctor.contextTypes && !didWarnAboutContextTypeAndContextTypes.has(ctor)) { + didWarnAboutContextTypeAndContextTypes.add(ctor); - HooksDispatcherOnMountInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - mountHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - mountHookTypesDev(); - checkDepsAreArrayDev(deps); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + error('%s declares both contextTypes and contextType static properties. ' + 'The legacy contextTypes property will be ignored.', name); + } + } - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.componentShouldUpdate === 'function') { + error('%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name); + } - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - mountHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (ctor.prototype && ctor.prototype.isPureReactComponent && typeof instance.shouldComponentUpdate !== 'undefined') { + error('%s has a method called shouldComponentUpdate(). ' + 'shouldComponentUpdate should not be used when extending React.PureComponent. ' + 'Please extend React.Component if shouldComponentUpdate is used.', getComponentNameFromType(ctor) || 'A pure component'); + } - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - mountHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - mountHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - mountHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - mountHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - mountHookTypesDev(); - return mountId(); - } - }; + if (typeof instance.componentDidUnmount === 'function') { + error('%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name); + } - { - HooksDispatcherOnMountInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - mountHookTypesDev(); - return mountRefresh(); - }; - } + if (typeof instance.componentDidReceiveProps === 'function') { + error('%s has a method called ' + 'componentDidReceiveProps(). But there is no such lifecycle method. ' + 'If you meant to update the state in response to changing props, ' + 'use componentWillReceiveProps(). If you meant to fetch data or ' + 'run side-effects or mutations after React has updated the UI, use componentDidUpdate().', name); + } - { - HooksDispatcherOnMountInDEV.useMemoCache = useMemoCache; - } + if (typeof instance.componentWillRecieveProps === 'function') { + error('%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name); + } - if (enableAsyncActions) { - HooksDispatcherOnMountInDEV.useHostTransitionStatus = - useHostTransitionStatus; + if (typeof instance.UNSAFE_componentWillRecieveProps === 'function') { + error('%s has a method called ' + 'UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?', name); + } - HooksDispatcherOnMountInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - mountHookTypesDev(); - return mountActionState(action, initialState); - }; + var hasMutatedProps = instance.props !== newProps; - HooksDispatcherOnMountInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - mountHookTypesDev(); - return mountActionState(action, initialState); - }; - } + if (instance.props !== undefined && hasMutatedProps) { + error('When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name); + } - if (enableAsyncActions) { - HooksDispatcherOnMountInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - mountHookTypesDev(); - return mountOptimistic(passthrough); - }; - } + if (instance.defaultProps) { + error('Setting defaultProps as an instance property on %s is not supported and will be ignored.' + ' Instead, define defaultProps as a static property on %s.', name, name); + } - HooksDispatcherOnMountWithHookTypesInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.getSnapshotBeforeUpdate === 'function' && typeof instance.componentDidUpdate !== 'function' && !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor)) { + didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor); - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + error('%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). ' + 'This component defines getSnapshotBeforeUpdate() only.', getComponentNameFromType(ctor)); + } - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (typeof instance.getDerivedStateFromProps === 'function') { + error('%s: getDerivedStateFromProps() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name); + } - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return mountId(); - } - }; + if (typeof instance.getDerivedStateFromError === 'function') { + error('%s: getDerivedStateFromError() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name); + } - { - HooksDispatcherOnMountWithHookTypesInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return mountRefresh(); - }; - } + if (typeof ctor.getSnapshotBeforeUpdate === 'function') { + error('%s: getSnapshotBeforeUpdate() is defined as a static method ' + 'and will be ignored. Instead, declare it as an instance method.', name); + } - { - HooksDispatcherOnMountWithHookTypesInDEV.useMemoCache = useMemoCache; - } + var state = instance.state; - if (enableAsyncActions) { - HooksDispatcherOnMountWithHookTypesInDEV.useHostTransitionStatus = - useHostTransitionStatus; + if (state && (typeof state !== 'object' || isArray(state))) { + error('%s.state: must be set to an object or null', name); + } - HooksDispatcherOnMountWithHookTypesInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return mountActionState(action, initialState); - }; + if (typeof instance.getChildContext === 'function' && typeof ctor.childContextTypes !== 'object') { + error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', name); + } + } +} - HooksDispatcherOnMountWithHookTypesInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return mountActionState(action, initialState); - }; - } +function constructClassInstance(workInProgress, ctor, props) { + var isLegacyContextConsumer = false; + var unmaskedContext = emptyContextObject; + var context = emptyContextObject; + var contextType = ctor.contextType; + + { + if ('contextType' in ctor) { + var isValid = // Allow null for conditional declaration + contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE; + + if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) { + didWarnAboutInvalidateContextType.add(ctor); + var addendum = ''; + + if (contextType === undefined) { + addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.'; + } else if (typeof contextType !== 'object') { + addendum = ' However, it is set to a ' + typeof contextType + '.'; + } else if (contextType.$$typeof === REACT_CONSUMER_TYPE) { + addendum = ' Did you accidentally pass the Context.Consumer instead?'; + } else { + addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.'; + } - if (enableAsyncActions) { - HooksDispatcherOnMountWithHookTypesInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return mountOptimistic(passthrough); - }; + error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentNameFromType(ctor) || 'Component', addendum); } + } + } - HooksDispatcherOnUpdateInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; - - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (typeof contextType === 'object' && contextType !== null) { + context = readContext(contextType); + } else { + unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + var contextTypes = ctor.contextTypes; + isLegacyContextConsumer = contextTypes !== null && contextTypes !== undefined; + context = isLegacyContextConsumer ? getMaskedContext(workInProgress, unmaskedContext) : emptyContextObject; + } - try { - return updateReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + var instance = new ctor(props, context); // Instantiate twice to help detect side-effects. - try { - return updateState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return updateDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return updateTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return updateId(); - } - }; + { + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - { - HooksDispatcherOnUpdateInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; + try { + instance = new ctor(props, context); // eslint-disable-line no-new + } finally { + setIsStrictModeForDevtools(false); } + } + } - { - HooksDispatcherOnUpdateInDEV.useMemoCache = useMemoCache; - } - - if (enableAsyncActions) { - HooksDispatcherOnUpdateInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnUpdateInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return updateActionState(action); - }; + var state = workInProgress.memoizedState = instance.state !== null && instance.state !== undefined ? instance.state : null; + instance.updater = classComponentUpdater; + workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates - HooksDispatcherOnUpdateInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return updateActionState(action); - }; - } + set(instance, workInProgress); - if (enableAsyncActions) { - HooksDispatcherOnUpdateInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return updateOptimistic(passthrough, reducer); - }; - } + { + instance._reactInternalInstance = fakeInternalInstance; + } - HooksDispatcherOnRerenderInDEV = { - readContext: function (context) { - return readContext(context); - }, - use: use, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + { + if (typeof ctor.getDerivedStateFromProps === 'function' && state === null) { + var componentName = getComponentNameFromType(ctor) || 'Component'; - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + if (!didWarnAboutUninitializedState.has(componentName)) { + didWarnAboutUninitializedState.add(componentName); - try { - return rerenderReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnRerenderInDEV; + error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, instance.state === null ? 'null' : 'undefined', componentName); + } + } // If new component APIs are defined, "unsafe" lifecycles won't be called. + // Warn about these lifecycles if they are present. + // Don't warn about react-lifecycles-compat polyfilled methods though. - try { - return rerenderState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - updateHookTypesDev(); - return rerenderDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - updateHookTypesDev(); - return rerenderTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - updateHookTypesDev(); - return updateId(); - } - }; - { - HooksDispatcherOnRerenderInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; - } + if (typeof ctor.getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function') { + var foundWillMountName = null; + var foundWillReceivePropsName = null; + var foundWillUpdateName = null; - { - HooksDispatcherOnRerenderInDEV.useMemoCache = useMemoCache; - } - - if (enableAsyncActions) { - HooksDispatcherOnRerenderInDEV.useHostTransitionStatus = - useHostTransitionStatus; - - HooksDispatcherOnRerenderInDEV.useFormState = function useFormState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useFormState"; - updateHookTypesDev(); - warnOnUseFormStateInDev(); - return rerenderActionState(action); - }; + if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true) { + foundWillMountName = 'componentWillMount'; + } else if (typeof instance.UNSAFE_componentWillMount === 'function') { + foundWillMountName = 'UNSAFE_componentWillMount'; + } - HooksDispatcherOnRerenderInDEV.useActionState = function useActionState( - action, - initialState, - permalink - ) { - currentHookNameInDev = "useActionState"; - updateHookTypesDev(); - return rerenderActionState(action); - }; + if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) { + foundWillReceivePropsName = 'componentWillReceiveProps'; + } else if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + foundWillReceivePropsName = 'UNSAFE_componentWillReceiveProps'; } - if (enableAsyncActions) { - HooksDispatcherOnRerenderInDEV.useOptimistic = function useOptimistic( - passthrough, - reducer - ) { - currentHookNameInDev = "useOptimistic"; - updateHookTypesDev(); - return rerenderOptimistic(passthrough, reducer); - }; + if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) { + foundWillUpdateName = 'componentWillUpdate'; + } else if (typeof instance.UNSAFE_componentWillUpdate === 'function') { + foundWillUpdateName = 'UNSAFE_componentWillUpdate'; } - InvalidNestedHooksDispatcherOnMountInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (foundWillMountName !== null || foundWillReceivePropsName !== null || foundWillUpdateName !== null) { + var _componentName = getComponentNameFromType(ctor) || 'Component'; - try { - return mountMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + var newApiName = typeof ctor.getDerivedStateFromProps === 'function' ? 'getDerivedStateFromProps()' : 'getSnapshotBeforeUpdate()'; - try { - return mountReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountRef(initialValue); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnMountInDEV; + if (!didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName)) { + didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName); - try { - return mountState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountId(); + error('Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n' + '%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n' + 'The above lifecycles should be removed. Learn more about this warning here:\n' + 'https://react.dev/link/unsafe-component-lifecycles', _componentName, newApiName, foundWillMountName !== null ? "\n " + foundWillMountName : '', foundWillReceivePropsName !== null ? "\n " + foundWillReceivePropsName : '', foundWillUpdateName !== null ? "\n " + foundWillUpdateName : ''); } - }; - - { - InvalidNestedHooksDispatcherOnMountInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - mountHookTypesDev(); - return mountRefresh(); - }; } + } + } // Cache unmasked context so we can avoid recreating masked context unless necessary. + // ReactFiberContext usually updates this cache but can't for newly-created instances. - { - InvalidNestedHooksDispatcherOnMountInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; - } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnMountInDEV.useHostTransitionStatus = - useHostTransitionStatus; + if (isLegacyContextConsumer) { + cacheContext(workInProgress, unmaskedContext, context); + } - InvalidNestedHooksDispatcherOnMountInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountActionState(action, initialState); - }; + return instance; +} - InvalidNestedHooksDispatcherOnMountInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountActionState(action, initialState); - }; - } +function callComponentWillMount(workInProgress, instance) { + var oldState = instance.state; - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnMountInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - mountHookTypesDev(); - return mountOptimistic(passthrough); - }; - } + if (typeof instance.componentWillMount === 'function') { + instance.componentWillMount(); + } - InvalidNestedHooksDispatcherOnUpdateInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (typeof instance.UNSAFE_componentWillMount === 'function') { + instance.UNSAFE_componentWillMount(); + } - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (oldState !== instance.state) { + { + error('%s.componentWillMount(): Assigning directly to this.state is ' + "deprecated (except inside a component's " + 'constructor). Use setState instead.', getComponentNameFromFiber(workInProgress) || 'Component'); + } - try { - return updateReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + classComponentUpdater.enqueueReplaceState(instance, instance.state, null); + } +} - try { - return updateState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateId(); - } - }; +function callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext) { + var oldState = instance.state; - { - InvalidNestedHooksDispatcherOnUpdateInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; - } + if (typeof instance.componentWillReceiveProps === 'function') { + instance.componentWillReceiveProps(newProps, nextContext); + } + + if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') { + instance.UNSAFE_componentWillReceiveProps(newProps, nextContext); + } + + if (instance.state !== oldState) { + { + var componentName = getComponentNameFromFiber(workInProgress) || 'Component'; - { - InvalidNestedHooksDispatcherOnUpdateInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; + if (!didWarnAboutStateAssignmentForComponent.has(componentName)) { + didWarnAboutStateAssignmentForComponent.add(componentName); + + error('%s.componentWillReceiveProps(): Assigning directly to ' + "this.state is deprecated (except inside a component's " + 'constructor). Use setState instead.', componentName); } + } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnUpdateInDEV.useHostTransitionStatus = - useHostTransitionStatus; + classComponentUpdater.enqueueReplaceState(instance, instance.state, null); + } +} // Invokes the mount life-cycles on a previously never rendered instance. - InvalidNestedHooksDispatcherOnUpdateInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateActionState(action); - }; - InvalidNestedHooksDispatcherOnUpdateInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateActionState(action); - }; - } +function mountClassInstance(workInProgress, ctor, newProps, renderLanes) { + { + checkClassInstance(workInProgress, ctor, newProps); + } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnUpdateInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateOptimistic(passthrough, reducer); - }; + var instance = workInProgress.stateNode; + instance.props = newProps; + instance.state = workInProgress.memoizedState; + instance.refs = {}; + initializeUpdateQueue(workInProgress); + var contextType = ctor.contextType; + + if (typeof contextType === 'object' && contextType !== null) { + instance.context = readContext(contextType); + } else { + var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + instance.context = getMaskedContext(workInProgress, unmaskedContext); + } + + { + if (instance.state === newProps) { + var componentName = getComponentNameFromType(ctor) || 'Component'; + + if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) { + didWarnAboutDirectlyAssigningPropsToState.add(componentName); + + error('%s: It is not recommended to assign props directly to state ' + "because updates to props won't be reflected in state. " + 'In most cases, it is better to use props directly.', componentName); } + } - InvalidNestedHooksDispatcherOnRerenderInDEV = { - readContext: function (context) { - warnInvalidContextAccess(); - return readContext(context); - }, - use: function (usable) { - warnInvalidHookAccess(); - return use(usable); - }, - useCallback: function (callback, deps) { - currentHookNameInDev = "useCallback"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateCallback(callback, deps); - }, - useContext: function (context) { - currentHookNameInDev = "useContext"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return readContext(context); - }, - useEffect: function (create, deps) { - currentHookNameInDev = "useEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateEffect(create, deps); - }, - useImperativeHandle: function (ref, create, deps) { - currentHookNameInDev = "useImperativeHandle"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateImperativeHandle(ref, create, deps); - }, - useInsertionEffect: function (create, deps) { - currentHookNameInDev = "useInsertionEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateInsertionEffect(create, deps); - }, - useLayoutEffect: function (create, deps) { - currentHookNameInDev = "useLayoutEffect"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateLayoutEffect(create, deps); - }, - useMemo: function (create, deps) { - currentHookNameInDev = "useMemo"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + if (workInProgress.mode & StrictLegacyMode) { + ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, instance); + } - try { - return updateMemo(create, deps); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useReducer: function (reducer, initialArg, init) { - currentHookNameInDev = "useReducer"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + ReactStrictModeWarnings.recordUnsafeLifecycleWarnings(workInProgress, instance); + } - try { - return rerenderReducer(reducer, initialArg, init); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useRef: function (initialValue) { - currentHookNameInDev = "useRef"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateRef(); - }, - useState: function (initialState) { - currentHookNameInDev = "useState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = InvalidNestedHooksDispatcherOnUpdateInDEV; + instance.state = workInProgress.memoizedState; + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - try { - return rerenderState(initialState); - } finally { - ReactSharedInternals.H = prevDispatcher; - } - }, - useDebugValue: function (value, formatterFn) { - currentHookNameInDev = "useDebugValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateDebugValue(); - }, - useDeferredValue: function (value, initialValue) { - currentHookNameInDev = "useDeferredValue"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderDeferredValue(value, initialValue); - }, - useTransition: function () { - currentHookNameInDev = "useTransition"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderTransition(); - }, - useSyncExternalStore: function ( - subscribe, - getSnapshot, - getServerSnapshot - ) { - currentHookNameInDev = "useSyncExternalStore"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateSyncExternalStore(subscribe, getSnapshot); - }, - useId: function () { - currentHookNameInDev = "useId"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return updateId(); - } - }; + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + instance.state = workInProgress.memoizedState; + } // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useCacheRefresh = - function useCacheRefresh() { - currentHookNameInDev = "useCacheRefresh"; - updateHookTypesDev(); - return updateRefresh(); - }; - } - { - InvalidNestedHooksDispatcherOnRerenderInDEV.useMemoCache = function ( - size - ) { - warnInvalidHookAccess(); - return useMemoCache(size); - }; - } + if (typeof ctor.getDerivedStateFromProps !== 'function' && typeof instance.getSnapshotBeforeUpdate !== 'function' && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) { + callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's + // process them now. - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnRerenderInDEV.useHostTransitionStatus = - useHostTransitionStatus; + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + instance.state = workInProgress.memoizedState; + } - InvalidNestedHooksDispatcherOnRerenderInDEV.useFormState = - function useFormState(action, initialState, permalink) { - currentHookNameInDev = "useFormState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderActionState(action); - }; + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } - InvalidNestedHooksDispatcherOnRerenderInDEV.useActionState = - function useActionState(action, initialState, permalink) { - currentHookNameInDev = "useActionState"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderActionState(action); - }; + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } +} + +function resumeMountClassInstance(workInProgress, ctor, newProps, renderLanes) { + var instance = workInProgress.stateNode; + var unresolvedOldProps = workInProgress.memoizedProps; + var oldProps = resolveClassComponentProps(ctor, unresolvedOldProps, workInProgress.type === workInProgress.elementType); + instance.props = oldProps; + var oldContext = instance.context; + var contextType = ctor.contextType; + var nextContext = emptyContextObject; + + if (typeof contextType === 'object' && contextType !== null) { + nextContext = readContext(contextType); + } else { + var nextLegacyUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext); + } + + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; + var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // When comparing whether props changed, we should compare using the + // unresolved props object that is stored on the fiber, rather than the + // one that gets assigned to the instance, because that object may have been + // cloned to resolve default props and/or remove `ref`. + + var unresolvedNewProps = workInProgress.pendingProps; + var didReceiveNewProps = unresolvedNewProps !== unresolvedOldProps; // Note: During these life-cycles, instance.props/instance.state are what + // ever the previously attempted to render - not the "current". However, + // during componentDidUpdate we pass the "current" props. + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) { + if (didReceiveNewProps || oldContext !== nextContext) { + callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext); + } + } + + resetHasForceUpdateBeforeProcessing(); + var oldState = workInProgress.memoizedState; + var newState = instance.state = oldState; + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + newState = workInProgress.memoizedState; + + if (!didReceiveNewProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } + + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } + + return false; + } + + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + newState = workInProgress.memoizedState; + } + + var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext); + + if (shouldUpdate) { + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) { + if (typeof instance.componentWillMount === 'function') { + instance.componentWillMount(); } - if (enableAsyncActions) { - InvalidNestedHooksDispatcherOnRerenderInDEV.useOptimistic = - function useOptimistic(passthrough, reducer) { - currentHookNameInDev = "useOptimistic"; - warnInvalidHookAccess(); - updateHookTypesDev(); - return rerenderOptimistic(passthrough, reducer); - }; + if (typeof instance.UNSAFE_componentWillMount === 'function') { + instance.UNSAFE_componentWillMount(); } } - var now = Scheduler.unstable_now; - var commitTime = 0; - var layoutEffectStartTime = -1; - var profilerStartTime = -1; - var passiveEffectStartTime = -1; - /** - * Tracks whether the current update was a nested/cascading update (scheduled from a layout effect). - * - * The overall sequence is: - * 1. render - * 2. commit (and call `onRender`, `onCommit`) - * 3. check for nested updates - * 4. flush passive effects (and call `onPostCommit`) - * - * Nested updates are identified in step 3 above, - * but step 4 still applies to the work that was just committed. - * We use two flags to track nested updates then: - * one tracks whether the upcoming update is a nested update, - * and the other tracks whether the current update was a nested update. - * The first value gets synced to the second at the start of the render phase. - */ - - var currentUpdateIsNested = false; - var nestedUpdateScheduled = false; + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; + } - function isCurrentUpdateNested() { - return currentUpdateIsNested; + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } + } else { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidMount === 'function') { + workInProgress.flags |= Update | LayoutStatic; } - function markNestedUpdateScheduled() { - { - nestedUpdateScheduled = true; - } + if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { + workInProgress.flags |= MountLayoutDev; + } // If shouldComponentUpdate returned false, we should still update the + // memoized state to indicate that this work can be reused. + + + workInProgress.memoizedProps = newProps; + workInProgress.memoizedState = newState; + } // Update the existing instance's state, props, and context pointers even + // if shouldComponentUpdate returns false. + + + instance.props = newProps; + instance.state = newState; + instance.context = nextContext; + return shouldUpdate; +} // Invokes the update life-cycles and returns false if it shouldn't rerender. + + +function updateClassInstance(current, workInProgress, ctor, newProps, renderLanes) { + var instance = workInProgress.stateNode; + cloneUpdateQueue(current, workInProgress); + var unresolvedOldProps = workInProgress.memoizedProps; + var oldProps = resolveClassComponentProps(ctor, unresolvedOldProps, workInProgress.type === workInProgress.elementType); + instance.props = oldProps; + var unresolvedNewProps = workInProgress.pendingProps; + var oldContext = instance.context; + var contextType = ctor.contextType; + var nextContext = emptyContextObject; + + if (typeof contextType === 'object' && contextType !== null) { + nextContext = readContext(contextType); + } else { + var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true); + nextContext = getMaskedContext(workInProgress, nextUnmaskedContext); + } + + var getDerivedStateFromProps = ctor.getDerivedStateFromProps; + var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // Note: During these life-cycles, instance.props/instance.state are what + // ever the previously attempted to render - not the "current". However, + // during componentDidUpdate we pass the "current" props. + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) { + if (unresolvedOldProps !== unresolvedNewProps || oldContext !== nextContext) { + callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext); } + } - function resetNestedUpdateFlag() { - { - currentUpdateIsNested = false; - nestedUpdateScheduled = false; + resetHasForceUpdateBeforeProcessing(); + var oldState = workInProgress.memoizedState; + var newState = instance.state = oldState; + processUpdateQueue(workInProgress, newProps, instance, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); + newState = workInProgress.memoizedState; + + if (unresolvedOldProps === unresolvedNewProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing() && !(enableLazyContextPropagation )) { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Update; } } - function syncNestedUpdateFlag() { - { - currentUpdateIsNested = nestedUpdateScheduled; - nestedUpdateScheduled = false; + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Snapshot; } } - function getCommitTime() { - return commitTime; - } + return false; + } - function recordCommitTime() { - commitTime = now(); - } + if (typeof getDerivedStateFromProps === 'function') { + applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps); + newState = workInProgress.memoizedState; + } - function startProfilerTimer(fiber) { - profilerStartTime = now(); + var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) || // TODO: In some cases, we'll end up checking if context has changed twice, + // both before and after `shouldComponentUpdate` has been called. Not ideal, + // but I'm loath to refactor this function. This only happens for memoized + // components so it's not that common. + enableLazyContextPropagation ; - if (fiber.actualStartTime < 0) { - fiber.actualStartTime = now(); + if (shouldUpdate) { + // In order to support react-lifecycles-compat polyfilled components, + // Unsafe lifecycles should not be invoked for components using the new APIs. + if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillUpdate === 'function' || typeof instance.componentWillUpdate === 'function')) { + if (typeof instance.componentWillUpdate === 'function') { + instance.componentWillUpdate(newProps, newState, nextContext); } - } - function stopProfilerTimerIfRunning(fiber) { - profilerStartTime = -1; + if (typeof instance.UNSAFE_componentWillUpdate === 'function') { + instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext); + } } - function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) { - if (profilerStartTime >= 0) { - var elapsedTime = now() - profilerStartTime; - fiber.actualDuration += elapsedTime; - - if (overrideBaseTime) { - fiber.selfBaseDuration = elapsedTime; - } + if (typeof instance.componentDidUpdate === 'function') { + workInProgress.flags |= Update; + } - profilerStartTime = -1; + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + workInProgress.flags |= Snapshot; + } + } else { + // If an update was already in progress, we should schedule an Update + // effect even though we're bailing out, so that cWU/cDU are called. + if (typeof instance.componentDidUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Update; } } - function recordLayoutEffectDuration(fiber) { - if (layoutEffectStartTime >= 0) { - var elapsedTime = now() - layoutEffectStartTime; - layoutEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor - // Or the root (for the DevTools Profiler to read) + if (typeof instance.getSnapshotBeforeUpdate === 'function') { + if (unresolvedOldProps !== current.memoizedProps || oldState !== current.memoizedState) { + workInProgress.flags |= Snapshot; + } + } // If shouldComponentUpdate returned false, we should still update the + // memoized props/state to indicate that this work can be reused. - var parentFiber = fiber.return; - while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; - root.effectDuration += elapsedTime; - return; + workInProgress.memoizedProps = newProps; + workInProgress.memoizedState = newState; + } // Update the existing instance's state, props, and context pointers even + // if shouldComponentUpdate returns false. - case Profiler: - var parentStateNode = parentFiber.stateNode; - parentStateNode.effectDuration += elapsedTime; - return; - } - parentFiber = parentFiber.return; - } - } - } + instance.props = newProps; + instance.state = newState; + instance.context = nextContext; + return shouldUpdate; +} - function recordPassiveEffectDuration(fiber) { - if (passiveEffectStartTime >= 0) { - var elapsedTime = now() - passiveEffectStartTime; - passiveEffectStartTime = -1; // Store duration on the next nearest Profiler ancestor - // Or the root (for the DevTools Profiler to read) +function resolveClassComponentProps(Component, baseProps, // Only resolve default props if this is a lazy component. Otherwise, they +// would have already been resolved by the JSX runtime. +// TODO: We're going to remove default prop resolution from the JSX runtime +// and keep it only for class components. As part of that change, we should +// remove this extra check. +alreadyResolvedDefaultProps) { + var newProps = baseProps; - var parentFiber = fiber.return; - while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; + var defaultProps = Component.defaultProps; - if (root !== null) { - root.passiveEffectDuration += elapsedTime; - } + if (defaultProps && ( // If disableDefaultPropsExceptForClasses is true, we always resolve + // default props here in the reconciler, rather than in the JSX runtime. + disableDefaultPropsExceptForClasses || !alreadyResolvedDefaultProps)) { + // We may have already copied the props object above to remove ref. If so, + // we can modify that. Otherwise, copy the props object with Object.assign. + if (newProps === baseProps) { + newProps = assign({}, newProps); + } // Taken from old JSX runtime, where this used to live. - return; - case Profiler: - var parentStateNode = parentFiber.stateNode; + for (var _propName in defaultProps) { + if (newProps[_propName] === undefined) { + newProps[_propName] = defaultProps[_propName]; + } + } + } - if (parentStateNode !== null) { - // Detached fibers have their state node cleared out. - // In this case, the return pointer is also cleared out, - // so we won't be able to report the time spent in this Profiler's subtree. - parentStateNode.passiveEffectDuration += elapsedTime; - } + return newProps; +} - return; - } +function resolveDefaultPropsOnNonClassComponent(Component, baseProps) { + if (disableDefaultPropsExceptForClasses) { + // Support for defaultProps is removed in React 19 for all types + // except classes. + return baseProps; + } - parentFiber = parentFiber.return; - } + if (Component && Component.defaultProps) { + // Resolve default props. Taken from ReactElement + var props = assign({}, baseProps); + var defaultProps = Component.defaultProps; + + for (var propName in defaultProps) { + if (props[propName] === undefined) { + props[propName] = defaultProps[propName]; } } - function startLayoutEffectTimer() { - layoutEffectStartTime = now(); - } + return props; + } + + return baseProps; +} - function startPassiveEffectTimer() { - passiveEffectStartTime = now(); +var reportGlobalError = typeof reportError === 'function' ? // In modern browsers, reportError will dispatch an error event, +// emulating an uncaught JavaScript error. +reportError : function (error) { + if (typeof window === 'object' && typeof window.ErrorEvent === 'function') { + // Browser Polyfill + var message = typeof error === 'object' && error !== null && typeof error.message === 'string' ? // eslint-disable-next-line react-internal/safe-string-coercion + String(error.message) : // eslint-disable-next-line react-internal/safe-string-coercion + String(error); + var event = new window.ErrorEvent('error', { + bubbles: true, + cancelable: true, + message: message, + error: error + }); + var shouldLog = window.dispatchEvent(event); + + if (!shouldLog) { + return; + } + } else if (typeof process === 'object' && // $FlowFixMe[method-unbinding] + typeof process.emit === 'function') { + // Node Polyfill + process.emit('uncaughtException', error); + return; + } // eslint-disable-next-line react-internal/no-production-logging + + + console['error'](error); +}; + +var componentName = null; +var errorBoundaryName = null; +function defaultOnUncaughtError(error, errorInfo) { + // Overriding this can silence these warnings e.g. for tests. + // See https://github.com/facebook/react/pull/13384 + // For uncaught root errors we report them as uncaught to the browser's + // onerror callback. This won't have component stacks and the error addendum. + // So we add those into a separate console.warn. + reportGlobalError(error); + + { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var componentNameMessage = componentName ? "An error occurred in the <" + componentName + "> component:" : 'An error occurred in one of your React components:'; + console['warn']('%s\n%s\n\n%s', componentNameMessage, componentStack || '', 'Consider adding an error boundary to your tree to customize error handling behavior.\n' + 'Visit https://react.dev/link/error-boundaries to learn more about error boundaries.'); + } +} +function defaultOnCaughtError(error, errorInfo) { + // Overriding this can silence these warnings e.g. for tests. + // See https://github.com/facebook/react/pull/13384 + // Caught by error boundary + { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var componentNameMessage = componentName ? "The above error occurred in the <" + componentName + "> component:" : 'The above error occurred in one of your React components:'; // In development, we provide our own message which includes the component stack + // in addition to the error. + // Don't transform to our wrapper + + console['error']('%o\n\n%s\n%s\n\n%s', error, componentNameMessage, componentStack, "React will try to recreate this component tree from scratch " + ("using the error boundary you provided, " + (errorBoundaryName || 'Anonymous') + ".")); + } +} +function defaultOnRecoverableError(error, errorInfo) { + reportGlobalError(error); +} +function logUncaughtError(root, errorInfo) { + try { + if (true) { + componentName = errorInfo.source ? getComponentNameFromFiber(errorInfo.source) : null; + errorBoundaryName = null; } - function transferActualDuration(fiber) { - // Transfer time spent rendering these children so we don't lose it - // after we rerender. This is used as a helper in special cases - // where we should count the work of multiple passes. - var child = fiber.child; + var error = errorInfo.value; - while (child) { - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - fiber.actualDuration += child.actualDuration; - child = child.sibling; - } + if (true && ReactSharedInternals.actQueue !== null) { + // For uncaught errors inside act, we track them on the act and then + // rethrow them into the test. + ReactSharedInternals.thrownErrors.push(error); + return; } - var fakeInternalInstance = {}; - var didWarnAboutStateAssignmentForComponent; - var didWarnAboutUninitializedState; - var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate; - var didWarnAboutLegacyLifecyclesAndDerivedState; - var didWarnAboutUndefinedDerivedState; - var didWarnAboutDirectlyAssigningPropsToState; - var didWarnAboutContextTypeAndContextTypes; - var didWarnAboutInvalidateContextType; - var didWarnOnInvalidCallback; + var onUncaughtError = root.onUncaughtError; + onUncaughtError(error, { + componentStack: errorInfo.stack + }); + } catch (e) { + // This method must not throw, or React internal state will get messed up. + // If console.error is overridden, or logCapturedError() shows a dialog that throws, + // we want to report this error outside of the normal stack as a last resort. + // https://github.com/facebook/react/issues/13188 + setTimeout(function () { + throw e; + }); + } +} +function logCaughtError(root, boundary, errorInfo) { + try { + if (true) { + componentName = errorInfo.source ? getComponentNameFromFiber(errorInfo.source) : null; + errorBoundaryName = getComponentNameFromFiber(boundary); + } + + var error = errorInfo.value; + var onCaughtError = root.onCaughtError; + onCaughtError(error, { + componentStack: errorInfo.stack, + errorBoundary: boundary.tag === ClassComponent ? boundary.stateNode // This should always be the case as long as we only have class boundaries + : null + }); + } catch (e) { + // This method must not throw, or React internal state will get messed up. + // If console.error is overridden, or logCapturedError() shows a dialog that throws, + // we want to report this error outside of the normal stack as a last resort. + // https://github.com/facebook/react/issues/13188 + setTimeout(function () { + throw e; + }); + } +} + +function createRootErrorUpdate(root, errorInfo, lane) { + var update = createUpdate(lane); // Unmount the root by rendering null. - { - didWarnAboutStateAssignmentForComponent = new Set(); - didWarnAboutUninitializedState = new Set(); - didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set(); - didWarnAboutLegacyLifecyclesAndDerivedState = new Set(); - didWarnAboutDirectlyAssigningPropsToState = new Set(); - didWarnAboutUndefinedDerivedState = new Set(); - didWarnAboutContextTypeAndContextTypes = new Set(); - didWarnAboutInvalidateContextType = new Set(); - didWarnOnInvalidCallback = new Set(); // This is so gross but it's at least non-critical and can be removed if - // it causes problems. This is meant to give a nicer error message for - // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component, - // ...)) which otherwise throws a "_processChildContext is not a function" - // exception. - - Object.defineProperty(fakeInternalInstance, "_processChildContext", { - enumerable: false, - value: function () { - throw new Error( - "_processChildContext is not available in React 16+. This likely " + - "means you have multiple copies of React and are attempting to nest " + - "a React 15 tree inside a React 16 tree using " + - "unstable_renderSubtreeIntoContainer, which isn't supported. Try " + - "to make sure you have only one copy of React (and ideally, switch " + - "to ReactDOM.createPortal)." - ); - } - }); - Object.freeze(fakeInternalInstance); - } + update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property + // being called "element". - function warnOnInvalidCallback(callback) { - { - if (callback === null || typeof callback === "function") { - return; - } // eslint-disable-next-line react-internal/safe-string-coercion + update.payload = { + element: null + }; - var key = String(callback); + update.callback = function () { + logUncaughtError(root, errorInfo); + }; - if (!didWarnOnInvalidCallback.has(key)) { - didWarnOnInvalidCallback.add(key); + return update; +} - error( - "Expected the last optional `callback` argument to be a " + - "function. Instead received: %s.", - callback - ); - } +function createClassErrorUpdate(lane) { + var update = createUpdate(lane); + update.tag = CaptureUpdate; + return update; +} + +function initializeClassErrorUpdate(update, root, fiber, errorInfo) { + var getDerivedStateFromError = fiber.type.getDerivedStateFromError; + + if (typeof getDerivedStateFromError === 'function') { + var error$1 = errorInfo.value; + + update.payload = function () { + return getDerivedStateFromError(error$1); + }; + + update.callback = function () { + { + markFailedErrorBoundaryForHotReloading(fiber); } - } - function warnOnUndefinedDerivedState(type, partialState) { + logCaughtError(root, fiber, errorInfo); + }; + } + + var inst = fiber.stateNode; + + if (inst !== null && typeof inst.componentDidCatch === 'function') { + // $FlowFixMe[missing-this-annot] + update.callback = function callback() { { - if (partialState === undefined) { - var componentName = getComponentNameFromType(type) || "Component"; + markFailedErrorBoundaryForHotReloading(fiber); + } - if (!didWarnAboutUndefinedDerivedState.has(componentName)) { - didWarnAboutUndefinedDerivedState.add(componentName); + logCaughtError(root, fiber, errorInfo); - error( - "%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. " + - "You have returned undefined.", - componentName - ); - } - } + if (typeof getDerivedStateFromError !== 'function') { + // To preserve the preexisting retry behavior of error boundaries, + // we keep track of which ones already failed during this batch. + // This gets reset before we yield back to the browser. + // TODO: Warn in strict mode if getDerivedStateFromError is + // not defined. + markLegacyErrorBoundaryAsFailed(this); } - } - function applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - nextProps - ) { - var prevState = workInProgress.memoizedState; - var partialState = getDerivedStateFromProps(nextProps, prevState); + var error$1 = errorInfo.value; + var stack = errorInfo.stack; + this.componentDidCatch(error$1, { + componentStack: stack !== null ? stack : '' + }); { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); - - try { - // Invoke the function an extra time to help detect side-effects. - partialState = getDerivedStateFromProps(nextProps, prevState); - } finally { - setIsStrictModeForDevtools(false); + if (typeof getDerivedStateFromError !== 'function') { + // If componentDidCatch is the only error boundary method defined, + // then it needs to call setState to recover from errors. + // If no state update is scheduled then the boundary will swallow the error. + if (!includesSomeLane(fiber.lanes, SyncLane)) { + error('%s: Error boundaries should implement getDerivedStateFromError(). ' + 'In that method, return a state update to display an error message or fallback UI.', getComponentNameFromFiber(fiber) || 'Unknown'); } } + } + }; + } +} - warnOnUndefinedDerivedState(ctor, partialState); - } // Merge the partial state and the previous state. +function resetSuspendedComponent(sourceFiber, rootRenderLanes) { + // A legacy mode Suspense quirk, only relevant to hook components. - var memoizedState = - partialState === null || partialState === undefined - ? prevState - : assign({}, prevState, partialState); - workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the - // base state. - if (workInProgress.lanes === NoLanes) { - // Queue is always non-null for classes - var updateQueue = workInProgress.updateQueue; - updateQueue.baseState = memoizedState; - } + var tag = sourceFiber.tag; + + if ((sourceFiber.mode & ConcurrentMode) === NoMode && (tag === FunctionComponent || tag === ForwardRef || tag === SimpleMemoComponent)) { + var currentSource = sourceFiber.alternate; + + if (currentSource) { + sourceFiber.updateQueue = currentSource.updateQueue; + sourceFiber.memoizedState = currentSource.memoizedState; + sourceFiber.lanes = currentSource.lanes; + } else { + sourceFiber.updateQueue = null; + sourceFiber.memoizedState = null; } + } +} - var classComponentUpdater = { - isMounted: isMounted, - // $FlowFixMe[missing-local-annot] - enqueueSetState: function (inst, payload, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.payload = payload; +function markSuspenseBoundaryShouldCapture(suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes) { + // This marks a Suspense boundary so that when we're unwinding the stack, + // it captures the suspended "exception" and does a second (fallback) pass. + if ((suspenseBoundary.mode & ConcurrentMode) === NoMode) { + // Legacy Mode Suspense + // + // If the boundary is in legacy mode, we should *not* + // suspend the commit. Pretend as if the suspended component rendered + // null and keep rendering. When the Suspense boundary completes, + // we'll do a second pass to render the fallback. + if (suspenseBoundary === returnFiber) { + // Special case where we suspended while reconciling the children of + // a Suspense boundary's inner Offscreen wrapper fiber. This happens + // when a React.lazy component is a direct child of a + // Suspense boundary. + // + // Suspense boundaries are implemented as multiple fibers, but they + // are a single conceptual unit. The legacy mode behavior where we + // pretend the suspended fiber committed as `null` won't work, + // because in this case the "suspended" fiber is the inner + // Offscreen wrapper. + // + // Because the contents of the boundary haven't started rendering + // yet (i.e. nothing in the tree has partially rendered) we can + // switch to the regular, concurrent mode behavior: mark the + // boundary with ShouldCapture and enter the unwind phase. + suspenseBoundary.flags |= ShouldCapture; + } else { + suspenseBoundary.flags |= DidCapture; + sourceFiber.flags |= ForceUpdateForLegacySuspense; // We're going to commit this fiber even though it didn't complete. + // But we shouldn't call any lifecycle methods or callbacks. Remove + // all lifecycle effect tags. + + sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete); + + if (sourceFiber.tag === ClassComponent) { + var currentSourceFiber = sourceFiber.alternate; + + if (currentSourceFiber === null) { + // This is a new mount. Change the tag so it's not mistaken for a + // completed class component. For example, we should not call + // componentWillUnmount if it is deleted. + sourceFiber.tag = IncompleteClassComponent; + } else { + // When we try rendering again, we should not reuse the current fiber, + // since it's known to be in an inconsistent state. Use a force update to + // prevent a bail out. + var update = createUpdate(SyncLane); + update.tag = ForceUpdate; + enqueueUpdate(sourceFiber, update, SyncLane); + } + } else if (sourceFiber.tag === FunctionComponent) { + var _currentSourceFiber = sourceFiber.alternate; + + if (_currentSourceFiber === null) { + // This is a new mount. Change the tag so it's not mistaken for a + // completed function component. + sourceFiber.tag = IncompleteFunctionComponent; + } + } // The source fiber did not complete. Mark it with Sync priority to + // indicate that it still has pending work. + + + sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); + } + + return suspenseBoundary; + } // Confirmed that the boundary is in a concurrent mode tree. Continue + // with the normal suspend path. + // + // After this we'll use a set of heuristics to determine whether this + // render pass will run to completion or restart or "suspend" the commit. + // The actual logic for this is spread out in different places. + // + // This first principle is that if we're going to suspend when we complete + // a root, then we should also restart if we get an update or ping that + // might unsuspend it, and vice versa. The only reason to suspend is + // because you think you might want to restart before committing. However, + // it doesn't make sense to restart only while in the period we're suspended. + // + // Restarting too aggressively is also not good because it starves out any + // intermediate loading state. So we use heuristics to determine when. + // Suspense Heuristics + // + // If nothing threw a Promise or all the same fallbacks are already showing, + // then don't suspend/restart. + // + // If this is an initial render of a new tree of Suspense boundaries and + // those trigger a fallback, then don't suspend/restart. We want to ensure + // that we can show the initial loading state as quickly as possible. + // + // If we hit a "Delayed" case, such as when we'd switch from content back into + // a fallback, then we should always suspend/restart. Transitions apply + // to this case. If none is defined, JND is used instead. + // + // If we're already showing a fallback and it gets "retried", allowing us to show + // another level, but there's still an inner boundary that would show a fallback, + // then we suspend/restart for 500ms since the last time we showed a fallback + // anywhere in the tree. This effectively throttles progressive loading into a + // consistent train of commits. This also gives us an opportunity to restart to + // get to the completed state slightly earlier. + // + // If there's ambiguity due to batching it's resolved in preference of: + // 1) "delayed", 2) "initial render", 3) "retry". + // + // We want to ensure that a "busy" state doesn't get force committed. We want to + // ensure that new initial loading states can commit as soon as possible. + + + suspenseBoundary.flags |= ShouldCapture; // TODO: I think we can remove this, since we now use `DidCapture` in + // the begin phase to prevent an early bailout. + + suspenseBoundary.lanes = rootRenderLanes; + return suspenseBoundary; +} - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } +function throwException(root, returnFiber, sourceFiber, value, rootRenderLanes) { + // The source fiber did not complete. + sourceFiber.flags |= Incomplete; - update.callback = callback; - } + { + if (isDevToolsPresent) { + // If we have pending work still, restore the original updaters + restorePendingUpdaters(root, rootRenderLanes); + } + } - var root = enqueueUpdate(fiber, update, lane); + if (value !== null && typeof value === 'object') { - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } + if (typeof value.then === 'function') { + // This is a wakeable. The component suspended. + var wakeable = value; + resetSuspendedComponent(sourceFiber); - { - markStateUpdateScheduled(fiber, lane); - } - }, - enqueueReplaceState: function (inst, payload, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.tag = ReplaceState; - update.payload = payload; - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } + var suspenseBoundary = getSuspenseHandler(); - update.callback = callback; - } + if (suspenseBoundary !== null) { + switch (suspenseBoundary.tag) { + case SuspenseComponent: + { + // If this suspense boundary is not already showing a fallback, mark + // the in-progress render as suspended. We try to perform this logic + // as soon as soon as possible during the render phase, so the work + // loop can know things like whether it's OK to switch to other tasks, + // or whether it can wait for data to resolve before continuing. + // TODO: Most of these checks are already performed when entering a + // Suspense boundary. We should track the information on the stack so + // we don't have to recompute it on demand. This would also allow us + // to unify with `use` which needs to perform this logic even sooner, + // before `throwException` is called. + if (sourceFiber.mode & ConcurrentMode) { + if (getShellBoundary() === null) { + // Suspended in the "shell" of the app. This is an undesirable + // loading state. We should avoid committing this tree. + renderDidSuspendDelayIfPossible(); + } else { + // If we suspended deeper than the shell, we don't need to delay + // the commmit. However, we still call renderDidSuspend if this is + // a new boundary, to tell the work loop that a new fallback has + // appeared during this render. + // TODO: Theoretically we should be able to delete this branch. + // It's currently used for two things: 1) to throttle the + // appearance of successive loading states, and 2) in + // SuspenseList, to determine whether the children include any + // pending fallbacks. For 1, we should apply throttling to all + // retries, not just ones that render an additional fallback. For + // 2, we should check subtreeFlags instead. Then we can delete + // this branch. + var current = suspenseBoundary.alternate; + + if (current === null) { + renderDidSuspend(); + } + } + } - var root = enqueueUpdate(fiber, update, lane); + suspenseBoundary.flags &= ~ForceClientRender; + markSuspenseBoundaryShouldCapture(suspenseBoundary, returnFiber, sourceFiber, root, rootRenderLanes); // Retry listener + // + // If the fallback does commit, we need to attach a different type of + // listener. This one schedules an update on the Suspense boundary to + // turn the fallback state off. + // + // Stash the wakeable on the boundary fiber so we can access it in the + // commit phase. + // + // When the wakeable resolves, we'll attempt to render the boundary + // again ("retry"). + // Check if this is a Suspensey resource. We do not attach retry + // listeners to these, because we don't actually need them for + // rendering. Only for committing. Instead, if a fallback commits + // and the only thing that suspended was a Suspensey resource, we + // retry immediately. + // TODO: Refactor throwException so that we don't have to do this type + // check. The caller already knows what the cause was. + + var isSuspenseyResource = wakeable === noopSuspenseyCommitThenable; + + if (isSuspenseyResource) { + suspenseBoundary.flags |= ScheduleRetry; + } else { + var retryQueue = suspenseBoundary.updateQueue; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } + if (retryQueue === null) { + suspenseBoundary.updateQueue = new Set([wakeable]); + } else { + retryQueue.add(wakeable); + } // We only attach ping listeners in concurrent mode. Legacy + // Suspense always commits fallbacks synchronously, so there are + // no pings. - { - markStateUpdateScheduled(fiber, lane); - } - }, - // $FlowFixMe[missing-local-annot] - enqueueForceUpdate: function (inst, callback) { - var fiber = get(inst); - var lane = requestUpdateLane(fiber); - var update = createUpdate(lane); - update.tag = ForceUpdate; - if (callback !== undefined && callback !== null) { - { - warnOnInvalidCallback(callback); - } + if (suspenseBoundary.mode & ConcurrentMode) { + attachPingListener(root, wakeable, rootRenderLanes); + } + } - update.callback = callback; - } + return false; + } - var root = enqueueUpdate(fiber, update, lane); + case OffscreenComponent: + { + if (suspenseBoundary.mode & ConcurrentMode) { + suspenseBoundary.flags |= ShouldCapture; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, lane); - entangleTransitions(root, fiber, lane); - } + var _isSuspenseyResource = wakeable === noopSuspenseyCommitThenable; - { - markForceUpdateScheduled(fiber, lane); - } - } - }; + if (_isSuspenseyResource) { + suspenseBoundary.flags |= ScheduleRetry; + } else { + var offscreenQueue = suspenseBoundary.updateQueue; + + if (offscreenQueue === null) { + var newOffscreenQueue = { + transitions: null, + markerInstances: null, + retryQueue: new Set([wakeable]) + }; + suspenseBoundary.updateQueue = newOffscreenQueue; + } else { + var _retryQueue = offscreenQueue.retryQueue; - function checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ) { - var instance = workInProgress.stateNode; - - if (typeof instance.shouldComponentUpdate === "function") { - var shouldUpdate = instance.shouldComponentUpdate( - newProps, - newState, - nextContext - ); + if (_retryQueue === null) { + offscreenQueue.retryQueue = new Set([wakeable]); + } else { + _retryQueue.add(wakeable); + } + } - { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); + attachPingListener(root, wakeable, rootRenderLanes); + } - try { - // Invoke the function an extra time to help detect side-effects. - shouldUpdate = instance.shouldComponentUpdate( - newProps, - newState, - nextContext - ); - } finally { - setIsStrictModeForDevtools(false); + return false; + } } - } - - if (shouldUpdate === undefined) { - error( - "%s.shouldComponentUpdate(): Returned undefined instead of a " + - "boolean value. Make sure to return true or false.", - getComponentNameFromType(ctor) || "Component" - ); - } } - return shouldUpdate; + throw new Error("Unexpected Suspense handler tag (" + suspenseBoundary.tag + "). This " + 'is a bug in React.'); + } else { + // No boundary was found. Unless this is a sync update, this is OK. + // We can suspend and wait for more data to arrive. + if (root.tag === ConcurrentRoot) { + // In a concurrent root, suspending without a Suspense boundary is + // allowed. It will suspend indefinitely without committing. + // + // TODO: Should we have different behavior for discrete updates? What + // about flushSync? Maybe it should put the tree into an inert state, + // and potentially log a warning. Revisit this for a future release. + attachPingListener(root, wakeable, rootRenderLanes); + renderDidSuspendDelayIfPossible(); + return false; + } else { + // In a legacy root, suspending without a boundary is always an error. + var uncaughtSuspenseError = new Error('A component suspended while responding to synchronous input. This ' + 'will cause the UI to be replaced with a loading indicator. To ' + 'fix, updates that suspend should be wrapped ' + 'with startTransition.'); + value = uncaughtSuspenseError; + } } + } + } // This is a regular error, not a Suspense wakeable. - if (ctor.prototype && ctor.prototype.isPureReactComponent) { - return ( - !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState) - ); - } + var wrapperError = new Error('There was an error during concurrent rendering but React was able to recover by ' + 'instead synchronously rendering the entire root.', { + cause: value + }); + queueConcurrentError(createCapturedValueAtFiber(wrapperError, sourceFiber)); + renderDidError(); // We didn't find a boundary that could handle this type of exception. Start + // over and traverse parent path again, this time treating the exception + // as an error. - return true; - } + if (returnFiber === null) { + // There's no return fiber, which means the root errored. This should never + // happen. Return `true` to trigger a fatal error (panic). + return true; + } - function checkClassInstance(workInProgress, ctor, newProps) { - var instance = workInProgress.stateNode; + var errorInfo = createCapturedValueAtFiber(value, sourceFiber); + var workInProgress = returnFiber; - { - var name = getComponentNameFromType(ctor) || "Component"; - var renderPresent = instance.render; - - if (!renderPresent) { - if (ctor.prototype && typeof ctor.prototype.render === "function") { - error( - "No `render` method found on the %s " + - "instance: did you accidentally return an object from the constructor?", - name - ); - } else { - error( - "No `render` method found on the %s " + - "instance: you may have forgotten to define `render`.", - name - ); - } - } + do { + switch (workInProgress.tag) { + case HostRoot: + { + workInProgress.flags |= ShouldCapture; - if ( - instance.getInitialState && - !instance.getInitialState.isReactClassApproved && - !instance.state - ) { - error( - "getInitialState was defined on %s, a plain JavaScript class. " + - "This is only supported for classes created using React.createClass. " + - "Did you mean to define a state property instead?", - name - ); - } + var _lane = pickArbitraryLane(rootRenderLanes); - if ( - instance.getDefaultProps && - !instance.getDefaultProps.isReactClassApproved - ) { - error( - "getDefaultProps was defined on %s, a plain JavaScript class. " + - "This is only supported for classes created using React.createClass. " + - "Use a static property to define defaultProps instead.", - name - ); - } + workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane); - if (instance.propTypes) { - error( - "propTypes was defined as an instance property on %s. Use a static " + - "property to define propTypes instead.", - name - ); - } + var _update = createRootErrorUpdate(workInProgress.stateNode, errorInfo, _lane); - if (instance.contextType) { - error( - "contextType was defined as an instance property on %s. Use a static " + - "property to define contextType instead.", - name - ); + enqueueCapturedUpdate(workInProgress, _update); + return false; } - { - if (instance.contextTypes) { - error( - "contextTypes was defined as an instance property on %s. Use a static " + - "property to define contextTypes instead.", - name - ); - } + case ClassComponent: + // Capture and retry + var ctor = workInProgress.type; + var instance = workInProgress.stateNode; - if ( - ctor.contextType && - ctor.contextTypes && - !didWarnAboutContextTypeAndContextTypes.has(ctor) - ) { - didWarnAboutContextTypeAndContextTypes.add(ctor); - - error( - "%s declares both contextTypes and contextType static properties. " + - "The legacy contextTypes property will be ignored.", - name - ); - } - } + if ((workInProgress.flags & DidCapture) === NoFlags$1 && (typeof ctor.getDerivedStateFromError === 'function' || instance !== null && typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance))) { + workInProgress.flags |= ShouldCapture; - if (typeof instance.componentShouldUpdate === "function") { - error( - "%s has a method called " + - "componentShouldUpdate(). Did you mean shouldComponentUpdate()? " + - "The name is phrased as a question because the function is " + - "expected to return a value.", - name - ); - } - - if ( - ctor.prototype && - ctor.prototype.isPureReactComponent && - typeof instance.shouldComponentUpdate !== "undefined" - ) { - error( - "%s has a method called shouldComponentUpdate(). " + - "shouldComponentUpdate should not be used when extending React.PureComponent. " + - "Please extend React.Component if shouldComponentUpdate is used.", - getComponentNameFromType(ctor) || "A pure component" - ); - } + var _lane2 = pickArbitraryLane(rootRenderLanes); - if (typeof instance.componentDidUnmount === "function") { - error( - "%s has a method called " + - "componentDidUnmount(). But there is no such lifecycle method. " + - "Did you mean componentWillUnmount()?", - name - ); - } - - if (typeof instance.componentDidReceiveProps === "function") { - error( - "%s has a method called " + - "componentDidReceiveProps(). But there is no such lifecycle method. " + - "If you meant to update the state in response to changing props, " + - "use componentWillReceiveProps(). If you meant to fetch data or " + - "run side-effects or mutations after React has updated the UI, use componentDidUpdate().", - name - ); - } + workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane2); // Schedule the error boundary to re-render using updated state - if (typeof instance.componentWillRecieveProps === "function") { - error( - "%s has a method called " + - "componentWillRecieveProps(). Did you mean componentWillReceiveProps()?", - name - ); - } + var _update2 = createClassErrorUpdate(_lane2); - if (typeof instance.UNSAFE_componentWillRecieveProps === "function") { - error( - "%s has a method called " + - "UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?", - name - ); + initializeClassErrorUpdate(_update2, root, workInProgress, errorInfo); + enqueueCapturedUpdate(workInProgress, _update2); + return false; } - var hasMutatedProps = instance.props !== newProps; + break; + } // $FlowFixMe[incompatible-type] we bail out when we get a null - if (instance.props !== undefined && hasMutatedProps) { - error( - "When calling super() in `%s`, make sure to pass " + - "up the same props that your component's constructor was passed.", - name - ); - } - if (instance.defaultProps) { - error( - "Setting defaultProps as an instance property on %s is not supported and will be ignored." + - " Instead, define defaultProps as a static property on %s.", - name, - name - ); - } + workInProgress = workInProgress.return; + } while (workInProgress !== null); - if ( - typeof instance.getSnapshotBeforeUpdate === "function" && - typeof instance.componentDidUpdate !== "function" && - !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor) - ) { - didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor); + return false; +} - error( - "%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). " + - "This component defines getSnapshotBeforeUpdate() only.", - getComponentNameFromType(ctor) - ); - } +// into a dehydrated boundary. + +var SelectiveHydrationException = new Error("This is not a real error. It's an implementation detail of React's " + "selective hydration feature. If this leaks into userspace, it's a bug in " + 'React. Please file an issue.'); +var didReceiveUpdate = false; +var didWarnAboutBadClass; +var didWarnAboutContextTypeOnFunctionComponent; +var didWarnAboutGetDerivedStateOnFunctionComponent; +var didWarnAboutFunctionRefs; +var didWarnAboutReassigningProps; +var didWarnAboutRevealOrder; +var didWarnAboutTailOptions; +var didWarnAboutDefaultPropsOnFunctionComponent; + +{ + didWarnAboutBadClass = {}; + didWarnAboutContextTypeOnFunctionComponent = {}; + didWarnAboutGetDerivedStateOnFunctionComponent = {}; + didWarnAboutFunctionRefs = {}; + didWarnAboutReassigningProps = false; + didWarnAboutRevealOrder = {}; + didWarnAboutTailOptions = {}; + didWarnAboutDefaultPropsOnFunctionComponent = {}; +} + +function reconcileChildren(current, workInProgress, nextChildren, renderLanes) { + if (current === null) { + // If this is a fresh new component that hasn't been rendered yet, we + // won't update its child set by applying minimal side-effects. Instead, + // we will add them all to the child before it gets rendered. That means + // we can optimize this reconciliation pass by not tracking side-effects. + workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderLanes); + } else { + // If the current child is the same as the work in progress, it means that + // we haven't yet started any work on these children. Therefore, we use + // the clone algorithm to create a copy of all the current children. + // If we had any progressed work already, that is invalid at this point so + // let's throw it out. + workInProgress.child = reconcileChildFibers(workInProgress, current.child, nextChildren, renderLanes); + } +} + +function forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderLanes) { + // This function is fork of reconcileChildren. It's used in cases where we + // want to reconcile without matching against the existing set. This has the + // effect of all current children being unmounted; even if the type and key + // are the same, the old child is unmounted and a new child is created. + // + // To do this, we're going to go through the reconcile algorithm twice. In + // the first pass, we schedule a deletion for all the current children by + // passing null. + workInProgress.child = reconcileChildFibers(workInProgress, current.child, null, renderLanes); // In the second pass, we mount the new children. The trick here is that we + // pass null in place of where we usually pass the current child set. This has + // the effect of remounting all children regardless of whether their + // identities match. + + workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderLanes); +} + +function updateForwardRef(current, workInProgress, Component, nextProps, renderLanes) { + // TODO: current can be non-null here even if the component + // hasn't yet mounted. This happens after the first render suspends. + // We'll need to figure out if this is fine or can cause issues. + var render = Component.render; + var ref = workInProgress.ref; + var propsWithoutRef; - if (typeof instance.getDerivedStateFromProps === "function") { - error( - "%s: getDerivedStateFromProps() is defined as an instance method " + - "and will be ignored. Instead, declare it as a static method.", - name - ); - } + { + propsWithoutRef = nextProps; + } // The rest is a fork of updateFunctionComponent - if (typeof instance.getDerivedStateFromError === "function") { - error( - "%s: getDerivedStateFromError() is defined as an instance method " + - "and will be ignored. Instead, declare it as a static method.", - name - ); - } - if (typeof ctor.getSnapshotBeforeUpdate === "function") { - error( - "%s: getSnapshotBeforeUpdate() is defined as a static method " + - "and will be ignored. Instead, declare it as an instance method.", - name - ); - } + var nextChildren; + prepareToReadContext(workInProgress, renderLanes); - var state = instance.state; + { + markComponentRenderStarted(workInProgress); + } - if (state && (typeof state !== "object" || isArray(state))) { - error("%s.state: must be set to an object or null", name); - } + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + nextChildren = renderWithHooks(current, workInProgress, render, propsWithoutRef, ref, renderLanes); + setIsRendering(false); + } - if ( - typeof instance.getChildContext === "function" && - typeof ctor.childContextTypes !== "object" - ) { - error( - "%s.getChildContext(): childContextTypes must be defined in order to " + - "use getChildContext().", - name - ); - } - } - } + { + markComponentRenderStopped(); + } - function constructClassInstance(workInProgress, ctor, props) { - var isLegacyContextConsumer = false; - var unmaskedContext = emptyContextObject; - var context = emptyContextObject; - var contextType = ctor.contextType; + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - { - if ("contextType" in ctor) { - var isValid = // Allow null for conditional declaration - contextType === null || - (contextType !== undefined && - contextType.$$typeof === REACT_CONTEXT_TYPE); - - if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) { - didWarnAboutInvalidateContextType.add(ctor); - var addendum = ""; - - if (contextType === undefined) { - addendum = - " However, it is set to undefined. " + - "This can be caused by a typo or by mixing up named and default imports. " + - "This can also happen due to a circular dependency, so " + - "try moving the createContext() call to a separate file."; - } else if (typeof contextType !== "object") { - addendum = " However, it is set to a " + typeof contextType + "."; - } else if (contextType.$$typeof === REACT_CONSUMER_TYPE) { - addendum = - " Did you accidentally pass the Context.Consumer instead?"; - } else { - addendum = - " However, it is set to an object with keys {" + - Object.keys(contextType).join(", ") + - "}."; - } - error( - "%s defines an invalid contextType. " + - "contextType should point to the Context object returned by React.createContext().%s", - getComponentNameFromType(ctor) || "Component", - addendum - ); - } - } - } + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (typeof contextType === "object" && contextType !== null) { - context = readContext(contextType); - } else { - unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); - var contextTypes = ctor.contextTypes; - isLegacyContextConsumer = - contextTypes !== null && contextTypes !== undefined; - context = isLegacyContextConsumer - ? getMaskedContext(workInProgress, unmaskedContext) - : emptyContextObject; - } +function updateMemoComponent(current, workInProgress, Component, nextProps, renderLanes) { + if (current === null) { + var type = Component.type; - var instance = new ctor(props, context); // Instantiate twice to help detect side-effects. + if (isSimpleFunctionComponent(type) && Component.compare === null && ( // SimpleMemoComponent codepath doesn't resolve outer props either. + disableDefaultPropsExceptForClasses || Component.defaultProps === undefined)) { + var resolvedType = type; { - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); - - try { - instance = new ctor(props, context); // eslint-disable-line no-new - } finally { - setIsStrictModeForDevtools(false); - } - } - } + resolvedType = resolveFunctionForHotReloading(type); + } // If this is a plain function component without default props, + // and with only the default shallow comparison, we upgrade it + // to a SimpleMemoComponent to allow fast path updates. - var state = (workInProgress.memoizedState = - instance.state !== null && instance.state !== undefined - ? instance.state - : null); - instance.updater = classComponentUpdater; - workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates - set(instance, workInProgress); + workInProgress.tag = SimpleMemoComponent; + workInProgress.type = resolvedType; { - instance._reactInternalInstance = fakeInternalInstance; + validateFunctionComponentInDev(workInProgress, type); } - { - if ( - typeof ctor.getDerivedStateFromProps === "function" && - state === null - ) { - var componentName = getComponentNameFromType(ctor) || "Component"; - - if (!didWarnAboutUninitializedState.has(componentName)) { - didWarnAboutUninitializedState.add(componentName); - - error( - "`%s` uses `getDerivedStateFromProps` but its initial state is " + - "%s. This is not recommended. Instead, define the initial state by " + - "assigning an object to `this.state` in the constructor of `%s`. " + - "This ensures that `getDerivedStateFromProps` arguments have a consistent shape.", - componentName, - instance.state === null ? "null" : "undefined", - componentName - ); - } - } // If new component APIs are defined, "unsafe" lifecycles won't be called. - // Warn about these lifecycles if they are present. - // Don't warn about react-lifecycles-compat polyfilled methods though. - - if ( - typeof ctor.getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function" - ) { - var foundWillMountName = null; - var foundWillReceivePropsName = null; - var foundWillUpdateName = null; - - if ( - typeof instance.componentWillMount === "function" && - instance.componentWillMount.__suppressDeprecationWarning !== true - ) { - foundWillMountName = "componentWillMount"; - } else if (typeof instance.UNSAFE_componentWillMount === "function") { - foundWillMountName = "UNSAFE_componentWillMount"; - } + return updateSimpleMemoComponent(current, workInProgress, resolvedType, nextProps, renderLanes); + } - if ( - typeof instance.componentWillReceiveProps === "function" && - instance.componentWillReceiveProps.__suppressDeprecationWarning !== - true - ) { - foundWillReceivePropsName = "componentWillReceiveProps"; - } else if ( - typeof instance.UNSAFE_componentWillReceiveProps === "function" - ) { - foundWillReceivePropsName = "UNSAFE_componentWillReceiveProps"; - } + if (!disableDefaultPropsExceptForClasses) { + { + if (Component.defaultProps !== undefined) { + var componentName = getComponentNameFromType(type) || 'Unknown'; - if ( - typeof instance.componentWillUpdate === "function" && - instance.componentWillUpdate.__suppressDeprecationWarning !== true - ) { - foundWillUpdateName = "componentWillUpdate"; - } else if ( - typeof instance.UNSAFE_componentWillUpdate === "function" - ) { - foundWillUpdateName = "UNSAFE_componentWillUpdate"; - } + if (!didWarnAboutDefaultPropsOnFunctionComponent[componentName]) { + error('%s: Support for defaultProps will be removed from memo components ' + 'in a future major release. Use JavaScript default parameters instead.', componentName); - if ( - foundWillMountName !== null || - foundWillReceivePropsName !== null || - foundWillUpdateName !== null - ) { - var _componentName = getComponentNameFromType(ctor) || "Component"; - - var newApiName = - typeof ctor.getDerivedStateFromProps === "function" - ? "getDerivedStateFromProps()" - : "getSnapshotBeforeUpdate()"; - - if ( - !didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName) - ) { - didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName); - - error( - "Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n" + - "%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n" + - "The above lifecycles should be removed. Learn more about this warning here:\n" + - "https://react.dev/link/unsafe-component-lifecycles", - _componentName, - newApiName, - foundWillMountName !== null ? "\n " + foundWillMountName : "", - foundWillReceivePropsName !== null - ? "\n " + foundWillReceivePropsName - : "", - foundWillUpdateName !== null ? "\n " + foundWillUpdateName : "" - ); - } + didWarnAboutDefaultPropsOnFunctionComponent[componentName] = true; } } - } // Cache unmasked context so we can avoid recreating masked context unless necessary. - // ReactFiberContext usually updates this cache but can't for newly-created instances. - - if (isLegacyContextConsumer) { - cacheContext(workInProgress, unmaskedContext, context); } - - return instance; } - function callComponentWillMount(workInProgress, instance) { - var oldState = instance.state; + var child = createFiberFromTypeAndProps(Component.type, null, nextProps, workInProgress, workInProgress.mode, renderLanes); + child.ref = workInProgress.ref; + child.return = workInProgress; + workInProgress.child = child; + return child; + } - if (typeof instance.componentWillMount === "function") { - instance.componentWillMount(); - } + var currentChild = current.child; // This is always exactly one child - if (typeof instance.UNSAFE_componentWillMount === "function") { - instance.UNSAFE_componentWillMount(); - } + var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext(current, renderLanes); - if (oldState !== instance.state) { - { - error( - "%s.componentWillMount(): Assigning directly to this.state is " + - "deprecated (except inside a component's " + - "constructor). Use setState instead.", - getComponentNameFromFiber(workInProgress) || "Component" - ); - } + if (!hasScheduledUpdateOrContext) { + // This will be the props with resolved defaultProps, + // unlike current.memoizedProps which will be the unresolved ones. + var prevProps = currentChild.memoizedProps; // Default to shallow comparison - classComponentUpdater.enqueueReplaceState( - instance, - instance.state, - null - ); - } + var compare = Component.compare; + compare = compare !== null ? compare : shallowEqual; + + if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } + } // React DevTools reads this flag. - function callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ) { - var oldState = instance.state; - if (typeof instance.componentWillReceiveProps === "function") { - instance.componentWillReceiveProps(newProps, nextContext); - } + workInProgress.flags |= PerformedWork; + var newChild = createWorkInProgress(currentChild, nextProps); + newChild.ref = workInProgress.ref; + newChild.return = workInProgress; + workInProgress.child = newChild; + return newChild; +} - if (typeof instance.UNSAFE_componentWillReceiveProps === "function") { - instance.UNSAFE_componentWillReceiveProps(newProps, nextContext); +function updateSimpleMemoComponent(current, workInProgress, Component, nextProps, renderLanes) { + // TODO: current can be non-null here even if the component + // hasn't yet mounted. This happens when the inner render suspends. + // We'll need to figure out if this is fine or can cause issues. + if (current !== null) { + var prevProps = current.memoizedProps; + + if (shallowEqual(prevProps, nextProps) && current.ref === workInProgress.ref && ( // Prevent bailout if the implementation changed due to hot reload. + workInProgress.type === current.type )) { + didReceiveUpdate = false; // The props are shallowly equal. Reuse the previous props object, like we + // would during a normal fiber bailout. + // + // We don't have strong guarantees that the props object is referentially + // equal during updates where we can't bail out anyway — like if the props + // are shallowly equal, but there's a local state or context update in the + // same batch. + // + // However, as a principle, we should aim to make the behavior consistent + // across different ways of memoizing a component. For example, React.memo + // has a different internal Fiber layout if you pass a normal function + // component (SimpleMemoComponent) versus if you pass a different type + // like forwardRef (MemoComponent). But this is an implementation detail. + // Wrapping a component in forwardRef (or React.lazy, etc) shouldn't + // affect whether the props object is reused during a bailout. + + workInProgress.pendingProps = nextProps = prevProps; + + if (!checkScheduledUpdateOrContext(current, renderLanes)) { + // The pending lanes were cleared at the beginning of beginWork. We're + // about to bail out, but there might be other lanes that weren't + // included in the current render. Usually, the priority level of the + // remaining updates is accumulated during the evaluation of the + // component (i.e. when processing the update queue). But since since + // we're bailing out early *without* evaluating the component, we need + // to account for it here, too. Reset to the value of the current fiber. + // NOTE: This only applies to SimpleMemoComponent, not MemoComponent, + // because a MemoComponent fiber does not have hooks or an update queue; + // rather, it wraps around an inner component, which may or may not + // contains hooks. + // TODO: Move the reset at in beginWork out of the common path so that + // this is no longer necessary. + workInProgress.lanes = current.lanes; + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } else if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { + // This is a special case that only exists for legacy mode. + // See https://github.com/facebook/react/pull/19216. + didReceiveUpdate = true; } + } + } - if (instance.state !== oldState) { - { - var componentName = - getComponentNameFromFiber(workInProgress) || "Component"; - - if (!didWarnAboutStateAssignmentForComponent.has(componentName)) { - didWarnAboutStateAssignmentForComponent.add(componentName); - - error( - "%s.componentWillReceiveProps(): Assigning directly to " + - "this.state is deprecated (except inside a component's " + - "constructor). Use setState instead.", - componentName - ); - } - } - - classComponentUpdater.enqueueReplaceState( - instance, - instance.state, - null - ); - } - } // Invokes the mount life-cycles on a previously never rendered instance. + return updateFunctionComponent(current, workInProgress, Component, nextProps, renderLanes); +} - function mountClassInstance(workInProgress, ctor, newProps, renderLanes) { - { - checkClassInstance(workInProgress, ctor, newProps); - } +function updateOffscreenComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; + var nextChildren = nextProps.children; + var nextIsDetached = (workInProgress.stateNode._pendingVisibility & OffscreenDetached) !== 0; + var prevState = current !== null ? current.memoizedState : null; + markRef(current, workInProgress); - var instance = workInProgress.stateNode; - instance.props = newProps; - instance.state = workInProgress.memoizedState; - instance.refs = {}; - initializeUpdateQueue(workInProgress); - var contextType = ctor.contextType; + if (nextProps.mode === 'hidden' || enableLegacyHidden || nextIsDetached) { + // Rendering a hidden tree. + var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; - if (typeof contextType === "object" && contextType !== null) { - instance.context = readContext(contextType); - } else { - var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true); - instance.context = getMaskedContext(workInProgress, unmaskedContext); - } + if (didSuspend) { + // Something suspended inside a hidden tree + // Include the base lanes from the last render + var nextBaseLanes = prevState !== null ? mergeLanes(prevState.baseLanes, renderLanes) : renderLanes; - { - if (instance.state === newProps) { - var componentName = getComponentNameFromType(ctor) || "Component"; + if (current !== null) { + // Reset to the current children + var currentChild = workInProgress.child = current.child; // The current render suspended, but there may be other lanes with + // pending work. We can't read `childLanes` from the current Offscreen + // fiber because we reset it when it was deferred; however, we can read + // the pending lanes from the child fibers. - if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) { - didWarnAboutDirectlyAssigningPropsToState.add(componentName); + var currentChildLanes = NoLanes; - error( - "%s: It is not recommended to assign props directly to state " + - "because updates to props won't be reflected in state. " + - "In most cases, it is better to use props directly.", - componentName - ); - } + while (currentChild !== null) { + currentChildLanes = mergeLanes(mergeLanes(currentChildLanes, currentChild.lanes), currentChild.childLanes); + currentChild = currentChild.sibling; } - if (workInProgress.mode & StrictLegacyMode) { - ReactStrictModeWarnings.recordLegacyContextWarning( - workInProgress, - instance - ); - } - - ReactStrictModeWarnings.recordUnsafeLifecycleWarnings( - workInProgress, - instance - ); - } - - instance.state = workInProgress.memoizedState; - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - instance.state = workInProgress.memoizedState; - } // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - typeof ctor.getDerivedStateFromProps !== "function" && - typeof instance.getSnapshotBeforeUpdate !== "function" && - (typeof instance.UNSAFE_componentWillMount === "function" || - typeof instance.componentWillMount === "function") - ) { - callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's - // process them now. - - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - instance.state = workInProgress.memoizedState; - } - - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } - - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } - } - - function resumeMountClassInstance( - workInProgress, - ctor, - newProps, - renderLanes - ) { - var instance = workInProgress.stateNode; - var unresolvedOldProps = workInProgress.memoizedProps; - var oldProps = resolveClassComponentProps( - ctor, - unresolvedOldProps, - workInProgress.type === workInProgress.elementType - ); - instance.props = oldProps; - var oldContext = instance.context; - var contextType = ctor.contextType; - var nextContext = emptyContextObject; - - if (typeof contextType === "object" && contextType !== null) { - nextContext = readContext(contextType); + var lanesWeJustAttempted = nextBaseLanes; + var remainingChildLanes = removeLanes(currentChildLanes, lanesWeJustAttempted); + workInProgress.childLanes = remainingChildLanes; } else { - var nextLegacyUnmaskedContext = getUnmaskedContext( - workInProgress, - ctor, - true - ); - nextContext = getMaskedContext( - workInProgress, - nextLegacyUnmaskedContext - ); - } - - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - var hasNewLifecycles = - typeof getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function"; // When comparing whether props changed, we should compare using the - // unresolved props object that is stored on the fiber, rather than the - // one that gets assigned to the instance, because that object may have been - // cloned to resolve default props and/or remove `ref`. - - var unresolvedNewProps = workInProgress.pendingProps; - var didReceiveNewProps = unresolvedNewProps !== unresolvedOldProps; // Note: During these life-cycles, instance.props/instance.state are what - // ever the previously attempted to render - not the "current". However, - // during componentDidUpdate we pass the "current" props. - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillReceiveProps === "function" || - typeof instance.componentWillReceiveProps === "function") - ) { - if (didReceiveNewProps || oldContext !== nextContext) { - callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ); - } - } - - resetHasForceUpdateBeforeProcessing(); - var oldState = workInProgress.memoizedState; - var newState = (instance.state = oldState); - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - newState = workInProgress.memoizedState; + workInProgress.childLanes = NoLanes; + workInProgress.child = null; + } - if ( - !didReceiveNewProps && - oldState === newState && - !hasContextChanged() && - !checkHasForceUpdateAfterProcessing() - ) { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } + return deferHiddenOffscreenComponent(current, workInProgress, nextBaseLanes); + } - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + // In legacy sync mode, don't defer the subtree. Render it now. + // TODO: Consider how Offscreen should work with transitions in the future + var nextState = { + baseLanes: NoLanes, + cachePool: null + }; + workInProgress.memoizedState = nextState; - return false; + { + // push the cache pool even though we're going to bail out + // because otherwise there'd be a context mismatch + if (current !== null) { + pushTransition(workInProgress, null); + } } - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - newState = workInProgress.memoizedState; - } - - var shouldUpdate = - checkHasForceUpdateAfterProcessing() || - checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ); + reuseHiddenContextOnStack(workInProgress); + pushOffscreenSuspenseHandler(workInProgress); + } else if (!includesSomeLane(renderLanes, OffscreenLane)) { + // We're hidden, and we're not rendering at Offscreen. We will bail out + // and resume this tree later. + // Schedule this fiber to re-render at Offscreen priority + workInProgress.lanes = workInProgress.childLanes = laneToLanes(OffscreenLane); // Include the base lanes from the last render + + var _nextBaseLanes = prevState !== null ? mergeLanes(prevState.baseLanes, renderLanes) : renderLanes; + + return deferHiddenOffscreenComponent(current, workInProgress, _nextBaseLanes); + } else { + // This is the second render. The surrounding visible content has already + // committed. Now we resume rendering the hidden tree. + // Rendering at offscreen, so we can clear the base lanes. + var _nextState = { + baseLanes: NoLanes, + cachePool: null + }; + workInProgress.memoizedState = _nextState; - if (shouldUpdate) { - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillMount === "function" || - typeof instance.componentWillMount === "function") - ) { - if (typeof instance.componentWillMount === "function") { - instance.componentWillMount(); - } + if (current !== null) { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + var prevCachePool = prevState !== null ? prevState.cachePool : null; // TODO: Consider if and how Offscreen pre-rendering should + // be attributed to the transition that spawned it - if (typeof instance.UNSAFE_componentWillMount === "function") { - instance.UNSAFE_componentWillMount(); - } - } + pushTransition(workInProgress, prevCachePool); + } // Push the lanes that were skipped when we bailed out. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } - } else { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidMount === "function") { - workInProgress.flags |= Update | LayoutStatic; - } - - if ((workInProgress.mode & StrictEffectsMode) !== NoMode) { - workInProgress.flags |= MountLayoutDev; - } // If shouldComponentUpdate returned false, we should still update the - // memoized state to indicate that this work can be reused. - - workInProgress.memoizedProps = newProps; - workInProgress.memoizedState = newState; - } // Update the existing instance's state, props, and context pointers even - // if shouldComponentUpdate returns false. - - instance.props = newProps; - instance.state = newState; - instance.context = nextContext; - return shouldUpdate; - } // Invokes the update life-cycles and returns false if it shouldn't rerender. - - function updateClassInstance( - current, - workInProgress, - ctor, - newProps, - renderLanes - ) { - var instance = workInProgress.stateNode; - cloneUpdateQueue(current, workInProgress); - var unresolvedOldProps = workInProgress.memoizedProps; - var oldProps = resolveClassComponentProps( - ctor, - unresolvedOldProps, - workInProgress.type === workInProgress.elementType - ); - instance.props = oldProps; - var unresolvedNewProps = workInProgress.pendingProps; - var oldContext = instance.context; - var contextType = ctor.contextType; - var nextContext = emptyContextObject; - - if (typeof contextType === "object" && contextType !== null) { - nextContext = readContext(contextType); + if (prevState !== null) { + pushHiddenContext(workInProgress, prevState); } else { - var nextUnmaskedContext = getUnmaskedContext( - workInProgress, - ctor, - true - ); - nextContext = getMaskedContext(workInProgress, nextUnmaskedContext); - } - - var getDerivedStateFromProps = ctor.getDerivedStateFromProps; - var hasNewLifecycles = - typeof getDerivedStateFromProps === "function" || - typeof instance.getSnapshotBeforeUpdate === "function"; // Note: During these life-cycles, instance.props/instance.state are what - // ever the previously attempted to render - not the "current". However, - // during componentDidUpdate we pass the "current" props. - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillReceiveProps === "function" || - typeof instance.componentWillReceiveProps === "function") - ) { - if ( - unresolvedOldProps !== unresolvedNewProps || - oldContext !== nextContext - ) { - callComponentWillReceiveProps( - workInProgress, - instance, - newProps, - nextContext - ); - } - } - - resetHasForceUpdateBeforeProcessing(); - var oldState = workInProgress.memoizedState; - var newState = (instance.state = oldState); - processUpdateQueue(workInProgress, newProps, instance, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - newState = workInProgress.memoizedState; - - if ( - unresolvedOldProps === unresolvedNewProps && - oldState === newState && - !hasContextChanged() && - !checkHasForceUpdateAfterProcessing() && - !enableLazyContextPropagation - ) { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Update; - } - } - - if (typeof instance.getSnapshotBeforeUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Snapshot; - } - } - - return false; + reuseHiddenContextOnStack(workInProgress); } - if (typeof getDerivedStateFromProps === "function") { - applyDerivedStateFromProps( - workInProgress, - ctor, - getDerivedStateFromProps, - newProps - ); - newState = workInProgress.memoizedState; - } - - var shouldUpdate = - checkHasForceUpdateAfterProcessing() || - checkShouldComponentUpdate( - workInProgress, - ctor, - oldProps, - newProps, - oldState, - newState, - nextContext - ) || // TODO: In some cases, we'll end up checking if context has changed twice, - // both before and after `shouldComponentUpdate` has been called. Not ideal, - // but I'm loath to refactor this function. This only happens for memoized - // components so it's not that common. - enableLazyContextPropagation; + pushOffscreenSuspenseHandler(workInProgress); + } + } else { + // Rendering a visible tree. + if (prevState !== null) { + // We're going from hidden -> visible. + var _prevCachePool = null; - if (shouldUpdate) { - // In order to support react-lifecycles-compat polyfilled components, - // Unsafe lifecycles should not be invoked for components using the new APIs. - if ( - !hasNewLifecycles && - (typeof instance.UNSAFE_componentWillUpdate === "function" || - typeof instance.componentWillUpdate === "function") - ) { - if (typeof instance.componentWillUpdate === "function") { - instance.componentWillUpdate(newProps, newState, nextContext); - } + { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + _prevCachePool = prevState.cachePool; + } - if (typeof instance.UNSAFE_componentWillUpdate === "function") { - instance.UNSAFE_componentWillUpdate( - newProps, - newState, - nextContext - ); - } - } + pushTransition(workInProgress, _prevCachePool); // Push the lanes that were skipped when we bailed out. - if (typeof instance.componentDidUpdate === "function") { - workInProgress.flags |= Update; - } + pushHiddenContext(workInProgress, prevState); + reuseSuspenseHandlerOnStack(workInProgress); // Since we're not hidden anymore, reset the state - if (typeof instance.getSnapshotBeforeUpdate === "function") { - workInProgress.flags |= Snapshot; - } - } else { - // If an update was already in progress, we should schedule an Update - // effect even though we're bailing out, so that cWU/cDU are called. - if (typeof instance.componentDidUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Update; - } + workInProgress.memoizedState = null; + } else { + // We weren't previously hidden, and we still aren't, so there's nothing + // special to do. Need to push to the stack regardless, though, to avoid + // a push/pop misalignment. + { + // If the render that spawned this one accessed the cache pool, resume + // using the same cache. Unless the parent changed, since that means + // there was a refresh. + if (current !== null) { + pushTransition(workInProgress, null); } + } // We're about to bail out, but we need to push this to the stack anyway + // to avoid a push/pop misalignment. - if (typeof instance.getSnapshotBeforeUpdate === "function") { - if ( - unresolvedOldProps !== current.memoizedProps || - oldState !== current.memoizedState - ) { - workInProgress.flags |= Snapshot; - } - } // If shouldComponentUpdate returned false, we should still update the - // memoized props/state to indicate that this work can be reused. - - workInProgress.memoizedProps = newProps; - workInProgress.memoizedState = newState; - } // Update the existing instance's state, props, and context pointers even - // if shouldComponentUpdate returns false. - - instance.props = newProps; - instance.state = newState; - instance.context = nextContext; - return shouldUpdate; - } - - function resolveClassComponentProps( - Component, - baseProps, // Only resolve default props if this is a lazy component. Otherwise, they - // would have already been resolved by the JSX runtime. - // TODO: We're going to remove default prop resolution from the JSX runtime - // and keep it only for class components. As part of that change, we should - // remove this extra check. - alreadyResolvedDefaultProps - ) { - var newProps = baseProps; - - var defaultProps = Component.defaultProps; - - if ( - defaultProps && // If disableDefaultPropsExceptForClasses is true, we always resolve - // default props here in the reconciler, rather than in the JSX runtime. - (disableDefaultPropsExceptForClasses || !alreadyResolvedDefaultProps) - ) { - // We may have already copied the props object above to remove ref. If so, - // we can modify that. Otherwise, copy the props object with Object.assign. - if (newProps === baseProps) { - newProps = assign({}, newProps); - } // Taken from old JSX runtime, where this used to live. - - for (var _propName in defaultProps) { - if (newProps[_propName] === undefined) { - newProps[_propName] = defaultProps[_propName]; - } - } - } - return newProps; + reuseHiddenContextOnStack(workInProgress); + reuseSuspenseHandlerOnStack(workInProgress); } + } - function resolveDefaultPropsOnNonClassComponent(Component, baseProps) { - if (disableDefaultPropsExceptForClasses) { - // Support for defaultProps is removed in React 19 for all types - // except classes. - return baseProps; - } + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (Component && Component.defaultProps) { - // Resolve default props. Taken from ReactElement - var props = assign({}, baseProps); - var defaultProps = Component.defaultProps; +function deferHiddenOffscreenComponent(current, workInProgress, nextBaseLanes, renderLanes) { + var nextState = { + baseLanes: nextBaseLanes, + // Save the cache pool so we can resume later. + cachePool: getOffscreenDeferredCache() + }; + workInProgress.memoizedState = nextState; - for (var propName in defaultProps) { - if (props[propName] === undefined) { - props[propName] = defaultProps[propName]; - } - } + { + // push the cache pool even though we're going to bail out + // because otherwise there'd be a context mismatch + if (current !== null) { + pushTransition(workInProgress, null); + } + } // We're about to bail out, but we need to push this to the stack anyway + // to avoid a push/pop misalignment. - return props; - } - - return baseProps; - } - - var reportGlobalError = - typeof reportError === "function" // In modern browsers, reportError will dispatch an error event, - ? // emulating an uncaught JavaScript error. - reportError - : function (error) { - if ( - typeof window === "object" && - typeof window.ErrorEvent === "function" - ) { - // Browser Polyfill - var message = - typeof error === "object" && - error !== null && - typeof error.message === "string" // eslint-disable-next-line react-internal/safe-string-coercion - ? String(error.message) // eslint-disable-next-line react-internal/safe-string-coercion - : String(error); - var event = new window.ErrorEvent("error", { - bubbles: true, - cancelable: true, - message: message, - error: error - }); - var shouldLog = window.dispatchEvent(event); - - if (!shouldLog) { - return; - } - } else if ( - typeof process === "object" && // $FlowFixMe[method-unbinding] - typeof process.emit === "function" - ) { - // Node Polyfill - process.emit("uncaughtException", error); - return; - } // eslint-disable-next-line react-internal/no-production-logging - - console["error"](error); - }; - var componentName = null; - var errorBoundaryName = null; - function defaultOnUncaughtError(error, errorInfo) { - // Overriding this can silence these warnings e.g. for tests. - // See https://github.com/facebook/react/pull/13384 - // For uncaught root errors we report them as uncaught to the browser's - // onerror callback. This won't have component stacks and the error addendum. - // So we add those into a separate console.warn. - reportGlobalError(error); + reuseHiddenContextOnStack(workInProgress); + pushOffscreenSuspenseHandler(workInProgress); - { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var componentNameMessage = componentName - ? "An error occurred in the <" + componentName + "> component:" - : "An error occurred in one of your React components:"; - console["warn"]( - "%s\n%s\n\n%s", - componentNameMessage, - componentStack || "", - "Consider adding an error boundary to your tree to customize error handling behavior.\n" + - "Visit https://react.dev/link/error-boundaries to learn more about error boundaries." - ); - } - } - function defaultOnCaughtError(error, errorInfo) { - // Overriding this can silence these warnings e.g. for tests. - // See https://github.com/facebook/react/pull/13384 - // Caught by error boundary - { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var componentNameMessage = componentName - ? "The above error occurred in the <" + componentName + "> component:" - : "The above error occurred in one of your React components:"; // In development, we provide our own message which includes the component stack - // in addition to the error. - // Don't transform to our wrapper - - console["error"]( - "%o\n\n%s\n%s\n\n%s", - error, - componentNameMessage, - componentStack, - "React will try to recreate this component tree from scratch " + - ("using the error boundary you provided, " + - (errorBoundaryName || "Anonymous") + - ".") - ); - } - } - function defaultOnRecoverableError(error, errorInfo) { - reportGlobalError(error); - } - function logUncaughtError(root, errorInfo) { - try { - if (true) { - componentName = errorInfo.source - ? getComponentNameFromFiber(errorInfo.source) - : null; - errorBoundaryName = null; - } + return null; +} // Note: These happen to have identical begin phases, for now. We shouldn't hold - var error = errorInfo.value; +function updateCacheComponent(current, workInProgress, renderLanes) { - if (true && ReactSharedInternals.actQueue !== null) { - // For uncaught errors inside act, we track them on the act and then - // rethrow them into the test. - ReactSharedInternals.thrownErrors.push(error); - return; - } + prepareToReadContext(workInProgress, renderLanes); + var parentCache = readContext(CacheContext); - var onUncaughtError = root.onUncaughtError; - onUncaughtError(error, { - componentStack: errorInfo.stack - }); - } catch (e) { - // This method must not throw, or React internal state will get messed up. - // If console.error is overridden, or logCapturedError() shows a dialog that throws, - // we want to report this error outside of the normal stack as a last resort. - // https://github.com/facebook/react/issues/13188 - setTimeout(function () { - throw e; - }); - } - } - function logCaughtError(root, boundary, errorInfo) { - try { - if (true) { - componentName = errorInfo.source - ? getComponentNameFromFiber(errorInfo.source) - : null; - errorBoundaryName = getComponentNameFromFiber(boundary); - } - - var error = errorInfo.value; - var onCaughtError = root.onCaughtError; - onCaughtError(error, { - componentStack: errorInfo.stack, - errorBoundary: - boundary.tag === ClassComponent - ? boundary.stateNode // This should always be the case as long as we only have class boundaries - : null - }); - } catch (e) { - // This method must not throw, or React internal state will get messed up. - // If console.error is overridden, or logCapturedError() shows a dialog that throws, - // we want to report this error outside of the normal stack as a last resort. - // https://github.com/facebook/react/issues/13188 - setTimeout(function () { - throw e; - }); - } + if (current === null) { + // Initial mount. Request a fresh cache from the pool. + var freshCache = requestCacheFromPool(renderLanes); + var initialState = { + parent: parentCache, + cache: freshCache + }; + workInProgress.memoizedState = initialState; + initializeUpdateQueue(workInProgress); + pushCacheProvider(workInProgress, freshCache); + } else { + // Check for updates + if (includesSomeLane(current.lanes, renderLanes)) { + cloneUpdateQueue(current, workInProgress); + processUpdateQueue(workInProgress, null, null, renderLanes); + suspendIfUpdateReadFromEntangledAsyncAction(); } - function createRootErrorUpdate(root, errorInfo, lane) { - var update = createUpdate(lane); // Unmount the root by rendering null. + var prevState = current.memoizedState; + var nextState = workInProgress.memoizedState; // Compare the new parent cache to the previous to see detect there was + // a refresh. - update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property - // being called "element". + if (prevState.parent !== parentCache) { + // Refresh in parent. Update the parent. + var derivedState = { + parent: parentCache, + cache: parentCache + }; // Copied from getDerivedStateFromProps implementation. Once the update + // queue is empty, persist the derived state onto the base state. - update.payload = { - element: null - }; + workInProgress.memoizedState = derivedState; - update.callback = function () { - logUncaughtError(root, errorInfo); - }; + if (workInProgress.lanes === NoLanes) { + var updateQueue = workInProgress.updateQueue; + workInProgress.memoizedState = updateQueue.baseState = derivedState; + } - return update; - } + pushCacheProvider(workInProgress, parentCache); // No need to propagate a context change because the refreshed parent + // already did. + } else { + // The parent didn't refresh. Now check if this cache did. + var nextCache = nextState.cache; + pushCacheProvider(workInProgress, nextCache); - function createClassErrorUpdate(lane) { - var update = createUpdate(lane); - update.tag = CaptureUpdate; - return update; + if (nextCache !== prevState.cache) { + // This cache refreshed. Propagate a context change. + propagateContextChange(workInProgress, CacheContext, renderLanes); + } } + } - function initializeClassErrorUpdate(update, root, fiber, errorInfo) { - var getDerivedStateFromError = fiber.type.getDerivedStateFromError; - - if (typeof getDerivedStateFromError === "function") { - var error$1 = errorInfo.value; + var nextChildren = workInProgress.pendingProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} // This should only be called if the name changes - update.payload = function () { - return getDerivedStateFromError(error$1); - }; +function updateFragment(current, workInProgress, renderLanes) { + var nextChildren = workInProgress.pendingProps; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - update.callback = function () { - { - markFailedErrorBoundaryForHotReloading(fiber); - } +function updateMode(current, workInProgress, renderLanes) { + var nextChildren = workInProgress.pendingProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - logCaughtError(root, fiber, errorInfo); - }; - } +function updateProfiler(current, workInProgress, renderLanes) { + { + workInProgress.flags |= Update; - var inst = fiber.stateNode; + { + // Reset effect durations for the next eventual effect phase. + // These are reset during render to allow the DevTools commit hook a chance to read them, + var stateNode = workInProgress.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; + } + } + + var nextProps = workInProgress.pendingProps; + var nextChildren = nextProps.children; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (inst !== null && typeof inst.componentDidCatch === "function") { - // $FlowFixMe[missing-this-annot] - update.callback = function callback() { - { - markFailedErrorBoundaryForHotReloading(fiber); - } +function markRef(current, workInProgress) { + // TODO: Check props.ref instead of fiber.ref when enableRefAsProp is on. + var ref = workInProgress.ref; - logCaughtError(root, fiber, errorInfo); + if (ref === null) { + if (current !== null && current.ref !== null) { + // Schedule a Ref effect + workInProgress.flags |= Ref | RefStatic; + } + } else { + if (typeof ref !== 'function' && typeof ref !== 'object') { + throw new Error('Expected ref to be a function, an object returned by React.createRef(), or undefined/null.'); + } - if (typeof getDerivedStateFromError !== "function") { - // To preserve the preexisting retry behavior of error boundaries, - // we keep track of which ones already failed during this batch. - // This gets reset before we yield back to the browser. - // TODO: Warn in strict mode if getDerivedStateFromError is - // not defined. - markLegacyErrorBoundaryAsFailed(this); - } + if (current === null || current.ref !== ref) { + if (current !== null) { + var oldRef = current.ref; + var newRef = ref; + + if (typeof oldRef === 'function' && typeof newRef === 'function' && typeof oldRef.__stringRef === 'string' && oldRef.__stringRef === newRef.__stringRef && oldRef.__stringRefType === newRef.__stringRefType && oldRef.__stringRefOwner === newRef.__stringRefOwner) { + // Although this is a different callback, it represents the same + // string ref. To avoid breaking old Meta code that relies on string + // refs only being attached once, reuse the old ref. This will + // prevent us from detaching and reattaching the ref on each update. + workInProgress.ref = oldRef; + return; + } + } // Schedule a Ref effect - var error$1 = errorInfo.value; - var stack = errorInfo.stack; - this.componentDidCatch(error$1, { - componentStack: stack !== null ? stack : "" - }); - { - if (typeof getDerivedStateFromError !== "function") { - // If componentDidCatch is the only error boundary method defined, - // then it needs to call setState to recover from errors. - // If no state update is scheduled then the boundary will swallow the error. - if (!includesSomeLane(fiber.lanes, SyncLane)) { - error( - "%s: Error boundaries should implement getDerivedStateFromError(). " + - "In that method, return a state update to display an error message or fallback UI.", - getComponentNameFromFiber(fiber) || "Unknown" - ); - } - } - } - }; - } + workInProgress.flags |= Ref | RefStatic; } + } +} - function resetSuspendedComponent(sourceFiber, rootRenderLanes) { - // A legacy mode Suspense quirk, only relevant to hook components. +function mountIncompleteFunctionComponent(_current, workInProgress, Component, nextProps, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); + workInProgress.tag = FunctionComponent; + return updateFunctionComponent(null, workInProgress, Component, nextProps, renderLanes); +} - var tag = sourceFiber.tag; +function updateFunctionComponent(current, workInProgress, Component, nextProps, renderLanes) { + { + if (Component.prototype && typeof Component.prototype.render === 'function') { + var componentName = getComponentNameFromType(Component) || 'Unknown'; - if ( - (sourceFiber.mode & ConcurrentMode) === NoMode && - (tag === FunctionComponent || - tag === ForwardRef || - tag === SimpleMemoComponent) - ) { - var currentSource = sourceFiber.alternate; + if (!didWarnAboutBadClass[componentName]) { + error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', componentName, componentName); - if (currentSource) { - sourceFiber.updateQueue = currentSource.updateQueue; - sourceFiber.memoizedState = currentSource.memoizedState; - sourceFiber.lanes = currentSource.lanes; - } else { - sourceFiber.updateQueue = null; - sourceFiber.memoizedState = null; - } + didWarnAboutBadClass[componentName] = true; } } - function markSuspenseBoundaryShouldCapture( - suspenseBoundary, - returnFiber, - sourceFiber, - root, - rootRenderLanes - ) { - // This marks a Suspense boundary so that when we're unwinding the stack, - // it captures the suspended "exception" and does a second (fallback) pass. - if ((suspenseBoundary.mode & ConcurrentMode) === NoMode) { - // Legacy Mode Suspense - // - // If the boundary is in legacy mode, we should *not* - // suspend the commit. Pretend as if the suspended component rendered - // null and keep rendering. When the Suspense boundary completes, - // we'll do a second pass to render the fallback. - if (suspenseBoundary === returnFiber) { - // Special case where we suspended while reconciling the children of - // a Suspense boundary's inner Offscreen wrapper fiber. This happens - // when a React.lazy component is a direct child of a - // Suspense boundary. - // - // Suspense boundaries are implemented as multiple fibers, but they - // are a single conceptual unit. The legacy mode behavior where we - // pretend the suspended fiber committed as `null` won't work, - // because in this case the "suspended" fiber is the inner - // Offscreen wrapper. - // - // Because the contents of the boundary haven't started rendering - // yet (i.e. nothing in the tree has partially rendered) we can - // switch to the regular, concurrent mode behavior: mark the - // boundary with ShouldCapture and enter the unwind phase. - suspenseBoundary.flags |= ShouldCapture; - } else { - suspenseBoundary.flags |= DidCapture; - sourceFiber.flags |= ForceUpdateForLegacySuspense; // We're going to commit this fiber even though it didn't complete. - // But we shouldn't call any lifecycle methods or callbacks. Remove - // all lifecycle effect tags. + if (workInProgress.mode & StrictLegacyMode) { + ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null); + } - sourceFiber.flags &= ~(LifecycleEffectMask | Incomplete); + if (current === null) { + // Some validations were previously done in mountIndeterminateComponent however and are now run + // in updateFuntionComponent but only on mount + validateFunctionComponentInDev(workInProgress, workInProgress.type); + } + } - if (sourceFiber.tag === ClassComponent) { - var currentSourceFiber = sourceFiber.alternate; + var context; - if (currentSourceFiber === null) { - // This is a new mount. Change the tag so it's not mistaken for a - // completed class component. For example, we should not call - // componentWillUnmount if it is deleted. - sourceFiber.tag = IncompleteClassComponent; - } else { - // When we try rendering again, we should not reuse the current fiber, - // since it's known to be in an inconsistent state. Use a force update to - // prevent a bail out. - var update = createUpdate(SyncLane); - update.tag = ForceUpdate; - enqueueUpdate(sourceFiber, update, SyncLane); - } - } else if (sourceFiber.tag === FunctionComponent) { - var _currentSourceFiber = sourceFiber.alternate; + { + var unmaskedContext = getUnmaskedContext(workInProgress, Component, true); + context = getMaskedContext(workInProgress, unmaskedContext); + } - if (_currentSourceFiber === null) { - // This is a new mount. Change the tag so it's not mistaken for a - // completed function component. - sourceFiber.tag = IncompleteFunctionComponent; - } - } // The source fiber did not complete. Mark it with Sync priority to - // indicate that it still has pending work. + var nextChildren; + prepareToReadContext(workInProgress, renderLanes); - sourceFiber.lanes = mergeLanes(sourceFiber.lanes, SyncLane); - } + { + markComponentRenderStarted(workInProgress); + } - return suspenseBoundary; - } // Confirmed that the boundary is in a concurrent mode tree. Continue - // with the normal suspend path. - // - // After this we'll use a set of heuristics to determine whether this - // render pass will run to completion or restart or "suspend" the commit. - // The actual logic for this is spread out in different places. - // - // This first principle is that if we're going to suspend when we complete - // a root, then we should also restart if we get an update or ping that - // might unsuspend it, and vice versa. The only reason to suspend is - // because you think you might want to restart before committing. However, - // it doesn't make sense to restart only while in the period we're suspended. - // - // Restarting too aggressively is also not good because it starves out any - // intermediate loading state. So we use heuristics to determine when. - // Suspense Heuristics - // - // If nothing threw a Promise or all the same fallbacks are already showing, - // then don't suspend/restart. - // - // If this is an initial render of a new tree of Suspense boundaries and - // those trigger a fallback, then don't suspend/restart. We want to ensure - // that we can show the initial loading state as quickly as possible. - // - // If we hit a "Delayed" case, such as when we'd switch from content back into - // a fallback, then we should always suspend/restart. Transitions apply - // to this case. If none is defined, JND is used instead. - // - // If we're already showing a fallback and it gets "retried", allowing us to show - // another level, but there's still an inner boundary that would show a fallback, - // then we suspend/restart for 500ms since the last time we showed a fallback - // anywhere in the tree. This effectively throttles progressive loading into a - // consistent train of commits. This also gives us an opportunity to restart to - // get to the completed state slightly earlier. - // - // If there's ambiguity due to batching it's resolved in preference of: - // 1) "delayed", 2) "initial render", 3) "retry". - // - // We want to ensure that a "busy" state doesn't get force committed. We want to - // ensure that new initial loading states can commit as soon as possible. + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + nextChildren = renderWithHooks(current, workInProgress, Component, nextProps, context, renderLanes); + setIsRendering(false); + } - suspenseBoundary.flags |= ShouldCapture; // TODO: I think we can remove this, since we now use `DidCapture` in - // the begin phase to prevent an early bailout. + { + markComponentRenderStopped(); + } - suspenseBoundary.lanes = rootRenderLanes; - return suspenseBoundary; - } + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - function throwException( - root, - returnFiber, - sourceFiber, - value, - rootRenderLanes - ) { - // The source fiber did not complete. - sourceFiber.flags |= Incomplete; - { - if (isDevToolsPresent) { - // If we have pending work still, restore the original updaters - restorePendingUpdaters(root, rootRenderLanes); - } - } - - if (value !== null && typeof value === "object") { - if (typeof value.then === "function") { - // This is a wakeable. The component suspended. - var wakeable = value; - resetSuspendedComponent(sourceFiber); - - var suspenseBoundary = getSuspenseHandler(); - - if (suspenseBoundary !== null) { - switch (suspenseBoundary.tag) { - case SuspenseComponent: { - // If this suspense boundary is not already showing a fallback, mark - // the in-progress render as suspended. We try to perform this logic - // as soon as soon as possible during the render phase, so the work - // loop can know things like whether it's OK to switch to other tasks, - // or whether it can wait for data to resolve before continuing. - // TODO: Most of these checks are already performed when entering a - // Suspense boundary. We should track the information on the stack so - // we don't have to recompute it on demand. This would also allow us - // to unify with `use` which needs to perform this logic even sooner, - // before `throwException` is called. - if (sourceFiber.mode & ConcurrentMode) { - if (getShellBoundary() === null) { - // Suspended in the "shell" of the app. This is an undesirable - // loading state. We should avoid committing this tree. - renderDidSuspendDelayIfPossible(); - } else { - // If we suspended deeper than the shell, we don't need to delay - // the commmit. However, we still call renderDidSuspend if this is - // a new boundary, to tell the work loop that a new fallback has - // appeared during this render. - // TODO: Theoretically we should be able to delete this branch. - // It's currently used for two things: 1) to throttle the - // appearance of successive loading states, and 2) in - // SuspenseList, to determine whether the children include any - // pending fallbacks. For 1, we should apply throttling to all - // retries, not just ones that render an additional fallback. For - // 2, we should check subtreeFlags instead. Then we can delete - // this branch. - var current = suspenseBoundary.alternate; - - if (current === null) { - renderDidSuspend(); - } - } - } + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - suspenseBoundary.flags &= ~ForceClientRender; - markSuspenseBoundaryShouldCapture( - suspenseBoundary, - returnFiber, - sourceFiber, - root, - rootRenderLanes - ); // Retry listener - // - // If the fallback does commit, we need to attach a different type of - // listener. This one schedules an update on the Suspense boundary to - // turn the fallback state off. - // - // Stash the wakeable on the boundary fiber so we can access it in the - // commit phase. - // - // When the wakeable resolves, we'll attempt to render the boundary - // again ("retry"). - // Check if this is a Suspensey resource. We do not attach retry - // listeners to these, because we don't actually need them for - // rendering. Only for committing. Instead, if a fallback commits - // and the only thing that suspended was a Suspensey resource, we - // retry immediately. - // TODO: Refactor throwException so that we don't have to do this type - // check. The caller already knows what the cause was. - - var isSuspenseyResource = - wakeable === noopSuspenseyCommitThenable; - - if (isSuspenseyResource) { - suspenseBoundary.flags |= ScheduleRetry; - } else { - var retryQueue = suspenseBoundary.updateQueue; +function replayFunctionComponent(current, workInProgress, nextProps, Component, secondArg, renderLanes) { + // This function is used to replay a component that previously suspended, + // after its data resolves. It's a simplified version of + // updateFunctionComponent that reuses the hooks from the previous attempt. + prepareToReadContext(workInProgress, renderLanes); - if (retryQueue === null) { - suspenseBoundary.updateQueue = new Set([wakeable]); - } else { - retryQueue.add(wakeable); - } // We only attach ping listeners in concurrent mode. Legacy - // Suspense always commits fallbacks synchronously, so there are - // no pings. + { + markComponentRenderStarted(workInProgress); + } - if (suspenseBoundary.mode & ConcurrentMode) { - attachPingListener(root, wakeable, rootRenderLanes); - } - } + var nextChildren = replaySuspendedComponentWithHooks(current, workInProgress, Component, nextProps, secondArg); - return false; - } + { + markComponentRenderStopped(); + } - case OffscreenComponent: { - if (suspenseBoundary.mode & ConcurrentMode) { - suspenseBoundary.flags |= ShouldCapture; + if (current !== null && !didReceiveUpdate) { + bailoutHooks(current, workInProgress, renderLanes); + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - var _isSuspenseyResource = - wakeable === noopSuspenseyCommitThenable; - if (_isSuspenseyResource) { - suspenseBoundary.flags |= ScheduleRetry; - } else { - var offscreenQueue = suspenseBoundary.updateQueue; - - if (offscreenQueue === null) { - var newOffscreenQueue = { - transitions: null, - markerInstances: null, - retryQueue: new Set([wakeable]) - }; - suspenseBoundary.updateQueue = newOffscreenQueue; - } else { - var _retryQueue = offscreenQueue.retryQueue; + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - if (_retryQueue === null) { - offscreenQueue.retryQueue = new Set([wakeable]); - } else { - _retryQueue.add(wakeable); - } - } +function updateClassComponent(current, workInProgress, Component, nextProps, renderLanes) { + { + // This is used by DevTools to force a boundary to error. + switch (shouldError(workInProgress)) { + case false: + { + var _instance = workInProgress.stateNode; + var ctor = workInProgress.type; // TODO This way of resetting the error boundary state is a hack. + // Is there a better way to do this? - attachPingListener(root, wakeable, rootRenderLanes); - } + var tempInstance = new ctor(workInProgress.memoizedProps, _instance.context); + var state = tempInstance.state; - return false; - } - } - } + _instance.updater.enqueueSetState(_instance, state, null); - throw new Error( - "Unexpected Suspense handler tag (" + - suspenseBoundary.tag + - "). This " + - "is a bug in React." - ); - } else { - // No boundary was found. Unless this is a sync update, this is OK. - // We can suspend and wait for more data to arrive. - if (root.tag === ConcurrentRoot) { - // In a concurrent root, suspending without a Suspense boundary is - // allowed. It will suspend indefinitely without committing. - // - // TODO: Should we have different behavior for discrete updates? What - // about flushSync? Maybe it should put the tree into an inert state, - // and potentially log a warning. Revisit this for a future release. - attachPingListener(root, wakeable, rootRenderLanes); - renderDidSuspendDelayIfPossible(); - return false; - } else { - // In a legacy root, suspending without a boundary is always an error. - var uncaughtSuspenseError = new Error( - "A component suspended while responding to synchronous input. This " + - "will cause the UI to be replaced with a loading indicator. To " + - "fix, updates that suspend should be wrapped " + - "with startTransition." - ); - value = uncaughtSuspenseError; - } + break; + } + + case true: + { + workInProgress.flags |= DidCapture; + workInProgress.flags |= ShouldCapture; // eslint-disable-next-line react-internal/prod-error-codes + + var error$1 = new Error('Simulated error coming from DevTools'); + var lane = pickArbitraryLane(renderLanes); + workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); // Schedule the error boundary to re-render using updated state + + var root = getWorkInProgressRoot(); + + if (root === null) { + throw new Error('Expected a work-in-progress root. This is a bug in React. Please file an issue.'); } + + var update = createClassErrorUpdate(lane); + initializeClassErrorUpdate(update, root, workInProgress, createCapturedValueAtFiber(error$1, workInProgress)); + enqueueCapturedUpdate(workInProgress, update); + break; } - } // This is a regular error, not a Suspense wakeable. + } + } // Push context providers early to prevent context stack mismatches. + // During mounting we don't know the child context yet as the instance doesn't exist. + // We will invalidate the child context in finishClassComponent() right after rendering. + + + var hasContext; - var wrapperError = new Error( - "There was an error during concurrent rendering but React was able to recover by " + - "instead synchronously rendering the entire root.", - { - cause: value - } - ); - queueConcurrentError( - createCapturedValueAtFiber(wrapperError, sourceFiber) - ); - renderDidError(); // We didn't find a boundary that could handle this type of exception. Start - // over and traverse parent path again, this time treating the exception - // as an error. - - if (returnFiber === null) { - // There's no return fiber, which means the root errored. This should never - // happen. Return `true` to trigger a fatal error (panic). - return true; - } + if (isContextProvider(Component)) { + hasContext = true; + pushContextProvider(workInProgress); + } else { + hasContext = false; + } - var errorInfo = createCapturedValueAtFiber(value, sourceFiber); - var workInProgress = returnFiber; + prepareToReadContext(workInProgress, renderLanes); + var instance = workInProgress.stateNode; + var shouldUpdate; - do { - switch (workInProgress.tag) { - case HostRoot: { - workInProgress.flags |= ShouldCapture; + if (instance === null) { + resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress); // In the initial pass we might need to construct the instance. - var _lane = pickArbitraryLane(rootRenderLanes); + constructClassInstance(workInProgress, Component, nextProps); + mountClassInstance(workInProgress, Component, nextProps, renderLanes); + shouldUpdate = true; + } else if (current === null) { + // In a resume, we'll already have an instance we can reuse. + shouldUpdate = resumeMountClassInstance(workInProgress, Component, nextProps, renderLanes); + } else { + shouldUpdate = updateClassInstance(current, workInProgress, Component, nextProps, renderLanes); + } - workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane); + var nextUnitOfWork = finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderLanes); - var _update = createRootErrorUpdate( - workInProgress.stateNode, - errorInfo, - _lane - ); + { + var inst = workInProgress.stateNode; - enqueueCapturedUpdate(workInProgress, _update); - return false; - } + if (shouldUpdate && inst.props !== nextProps) { + if (!didWarnAboutReassigningProps) { + error('It looks like %s is reassigning its own `this.props` while rendering. ' + 'This is not supported and can lead to confusing bugs.', getComponentNameFromFiber(workInProgress) || 'a component'); + } - case ClassComponent: - // Capture and retry - var ctor = workInProgress.type; - var instance = workInProgress.stateNode; - - if ( - (workInProgress.flags & DidCapture) === NoFlags$1 && - (typeof ctor.getDerivedStateFromError === "function" || - (instance !== null && - typeof instance.componentDidCatch === "function" && - !isAlreadyFailedLegacyErrorBoundary(instance))) - ) { - workInProgress.flags |= ShouldCapture; - - var _lane2 = pickArbitraryLane(rootRenderLanes); - - workInProgress.lanes = mergeLanes(workInProgress.lanes, _lane2); // Schedule the error boundary to re-render using updated state - - var _update2 = createClassErrorUpdate(_lane2); - - initializeClassErrorUpdate( - _update2, - root, - workInProgress, - errorInfo - ); - enqueueCapturedUpdate(workInProgress, _update2); - return false; - } + didWarnAboutReassigningProps = true; + } + } - break; - } // $FlowFixMe[incompatible-type] we bail out when we get a null + return nextUnitOfWork; +} - workInProgress = workInProgress.return; - } while (workInProgress !== null); +function finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderLanes) { + // Refs should update even if shouldComponentUpdate returns false + markRef(current, workInProgress); + var didCaptureError = (workInProgress.flags & DidCapture) !== NoFlags$1; - return false; + if (!shouldUpdate && !didCaptureError) { + // Context providers should defer to sCU for rendering + if (hasContext) { + invalidateContextProvider(workInProgress, Component, false); } - // into a dehydrated boundary. + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - var SelectiveHydrationException = new Error( - "This is not a real error. It's an implementation detail of React's " + - "selective hydration feature. If this leaks into userspace, it's a bug in " + - "React. Please file an issue." - ); - var didReceiveUpdate = false; - var didWarnAboutBadClass; - var didWarnAboutContextTypeOnFunctionComponent; - var didWarnAboutGetDerivedStateOnFunctionComponent; - var didWarnAboutFunctionRefs; - var didWarnAboutReassigningProps; - var didWarnAboutRevealOrder; - var didWarnAboutTailOptions; - var didWarnAboutDefaultPropsOnFunctionComponent; + var instance = workInProgress.stateNode; // Rerender - { - didWarnAboutBadClass = {}; - didWarnAboutContextTypeOnFunctionComponent = {}; - didWarnAboutGetDerivedStateOnFunctionComponent = {}; - didWarnAboutFunctionRefs = {}; - didWarnAboutReassigningProps = false; - didWarnAboutRevealOrder = {}; - didWarnAboutTailOptions = {}; - didWarnAboutDefaultPropsOnFunctionComponent = {}; - } - - function reconcileChildren( - current, - workInProgress, - nextChildren, - renderLanes - ) { - if (current === null) { - // If this is a fresh new component that hasn't been rendered yet, we - // won't update its child set by applying minimal side-effects. Instead, - // we will add them all to the child before it gets rendered. That means - // we can optimize this reconciliation pass by not tracking side-effects. - workInProgress.child = mountChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } else { - // If the current child is the same as the work in progress, it means that - // we haven't yet started any work on these children. Therefore, we use - // the clone algorithm to create a copy of all the current children. - // If we had any progressed work already, that is invalid at this point so - // let's throw it out. - workInProgress.child = reconcileChildFibers( - workInProgress, - current.child, - nextChildren, - renderLanes - ); - } - } - - function forceUnmountCurrentAndReconcile( - current, - workInProgress, - nextChildren, - renderLanes - ) { - // This function is fork of reconcileChildren. It's used in cases where we - // want to reconcile without matching against the existing set. This has the - // effect of all current children being unmounted; even if the type and key - // are the same, the old child is unmounted and a new child is created. - // - // To do this, we're going to go through the reconcile algorithm twice. In - // the first pass, we schedule a deletion for all the current children by - // passing null. - workInProgress.child = reconcileChildFibers( - workInProgress, - current.child, - null, - renderLanes - ); // In the second pass, we mount the new children. The trick here is that we - // pass null in place of where we usually pass the current child set. This has - // the effect of remounting all children regardless of whether their - // identities match. - - workInProgress.child = reconcileChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } - - function updateForwardRef( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - // TODO: current can be non-null here even if the component - // hasn't yet mounted. This happens after the first render suspends. - // We'll need to figure out if this is fine or can cause issues. - var render = Component.render; - var ref = workInProgress.ref; - var propsWithoutRef; + { + ReactSharedInternals.owner = workInProgress; + } - { - propsWithoutRef = nextProps; - } // The rest is a fork of updateFunctionComponent + var nextChildren; - var nextChildren; - prepareToReadContext(workInProgress, renderLanes); + if (didCaptureError && typeof Component.getDerivedStateFromError !== 'function') { + // If we captured an error, but getDerivedStateFromError is not defined, + // unmount all the children. componentDidCatch will schedule an update to + // re-render a fallback. This is temporary until we migrate everyone to + // the new API. + // TODO: Warn in a future release. + nextChildren = null; - { - markComponentRenderStarted(workInProgress); - } + { + stopProfilerTimerIfRunning(); + } + } else { + { + markComponentRenderStarted(workInProgress); + } - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - nextChildren = renderWithHooks( - current, - workInProgress, - render, - propsWithoutRef, - ref, - renderLanes - ); - setIsRendering(false); - } + { + setIsRendering(true); + nextChildren = instance.render(); - { - markComponentRenderStopped(); - } + if (workInProgress.mode & StrictLegacyMode) { + setIsStrictModeForDevtools(true); - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); + try { + instance.render(); + } finally { + setIsStrictModeForDevtools(false); + } } - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + setIsRendering(false); } - function updateMemoComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - if (current === null) { - var type = Component.type; + { + markComponentRenderStopped(); + } + } // React DevTools reads this flag. - if ( - isSimpleFunctionComponent(type) && - Component.compare === null && // SimpleMemoComponent codepath doesn't resolve outer props either. - (disableDefaultPropsExceptForClasses || - Component.defaultProps === undefined) - ) { - var resolvedType = type; - { - resolvedType = resolveFunctionForHotReloading(type); - } // If this is a plain function component without default props, - // and with only the default shallow comparison, we upgrade it - // to a SimpleMemoComponent to allow fast path updates. + workInProgress.flags |= PerformedWork; - workInProgress.tag = SimpleMemoComponent; - workInProgress.type = resolvedType; + if (current !== null && didCaptureError) { + // If we're recovering from an error, reconcile without reusing any of + // the existing children. Conceptually, the normal children and the children + // that are shown on error are two different sets, so we shouldn't reuse + // normal children even if their identities match. + forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderLanes); + } else { + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } // Memoize state using the values we just used to render. + // TODO: Restructure so we never read values from the instance. - { - validateFunctionComponentInDev(workInProgress, type); - } - return updateSimpleMemoComponent( - current, - workInProgress, - resolvedType, - nextProps, - renderLanes - ); - } + workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it. - if (!disableDefaultPropsExceptForClasses) { - { - if (Component.defaultProps !== undefined) { - var componentName = getComponentNameFromType(type) || "Unknown"; - - if (!didWarnAboutDefaultPropsOnFunctionComponent[componentName]) { - error( - "%s: Support for defaultProps will be removed from memo components " + - "in a future major release. Use JavaScript default parameters instead.", - componentName - ); - - didWarnAboutDefaultPropsOnFunctionComponent[componentName] = - true; - } - } - } - } + if (hasContext) { + invalidateContextProvider(workInProgress, Component, true); + } - var child = createFiberFromTypeAndProps( - Component.type, - null, - nextProps, - workInProgress, - workInProgress.mode, - renderLanes - ); - child.ref = workInProgress.ref; - child.return = workInProgress; - workInProgress.child = child; - return child; - } - - var currentChild = current.child; // This is always exactly one child - - var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( - current, - renderLanes - ); - - if (!hasScheduledUpdateOrContext) { - // This will be the props with resolved defaultProps, - // unlike current.memoizedProps which will be the unresolved ones. - var prevProps = currentChild.memoizedProps; // Default to shallow comparison - - var compare = Component.compare; - compare = compare !== null ? compare : shallowEqual; - - if ( - compare(prevProps, nextProps) && - current.ref === workInProgress.ref - ) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } - } // React DevTools reads this flag. - - workInProgress.flags |= PerformedWork; - var newChild = createWorkInProgress(currentChild, nextProps); - newChild.ref = workInProgress.ref; - newChild.return = workInProgress; - workInProgress.child = newChild; - return newChild; - } - - function updateSimpleMemoComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - // TODO: current can be non-null here even if the component - // hasn't yet mounted. This happens when the inner render suspends. - // We'll need to figure out if this is fine or can cause issues. - if (current !== null) { - var prevProps = current.memoizedProps; - - if ( - shallowEqual(prevProps, nextProps) && - current.ref === workInProgress.ref && // Prevent bailout if the implementation changed due to hot reload. - workInProgress.type === current.type - ) { - didReceiveUpdate = false; // The props are shallowly equal. Reuse the previous props object, like we - // would during a normal fiber bailout. - // - // We don't have strong guarantees that the props object is referentially - // equal during updates where we can't bail out anyway — like if the props - // are shallowly equal, but there's a local state or context update in the - // same batch. - // - // However, as a principle, we should aim to make the behavior consistent - // across different ways of memoizing a component. For example, React.memo - // has a different internal Fiber layout if you pass a normal function - // component (SimpleMemoComponent) versus if you pass a different type - // like forwardRef (MemoComponent). But this is an implementation detail. - // Wrapping a component in forwardRef (or React.lazy, etc) shouldn't - // affect whether the props object is reused during a bailout. - - workInProgress.pendingProps = nextProps = prevProps; - - if (!checkScheduledUpdateOrContext(current, renderLanes)) { - // The pending lanes were cleared at the beginning of beginWork. We're - // about to bail out, but there might be other lanes that weren't - // included in the current render. Usually, the priority level of the - // remaining updates is accumulated during the evaluation of the - // component (i.e. when processing the update queue). But since since - // we're bailing out early *without* evaluating the component, we need - // to account for it here, too. Reset to the value of the current fiber. - // NOTE: This only applies to SimpleMemoComponent, not MemoComponent, - // because a MemoComponent fiber does not have hooks or an update queue; - // rather, it wraps around an inner component, which may or may not - // contains hooks. - // TODO: Move the reset at in beginWork out of the common path so that - // this is no longer necessary. - workInProgress.lanes = current.lanes; - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } else if ( - (current.flags & ForceUpdateForLegacySuspense) !== - NoFlags$1 - ) { - // This is a special case that only exists for legacy mode. - // See https://github.com/facebook/react/pull/19216. - didReceiveUpdate = true; - } - } - } + return workInProgress.child; +} - return updateFunctionComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ); - } +function pushHostRootContext(workInProgress) { + var root = workInProgress.stateNode; - function updateOffscreenComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; - var nextChildren = nextProps.children; - var nextIsDetached = - (workInProgress.stateNode._pendingVisibility & OffscreenDetached) !== 0; - var prevState = current !== null ? current.memoizedState : null; - markRef(current, workInProgress); + if (root.pendingContext) { + pushTopLevelContextObject(workInProgress, root.pendingContext, root.pendingContext !== root.context); + } else if (root.context) { + // Should always be set + pushTopLevelContextObject(workInProgress, root.context, false); + } - if (nextProps.mode === "hidden" || enableLegacyHidden || nextIsDetached) { - // Rendering a hidden tree. - var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; + pushHostContainer(workInProgress, root.containerInfo); +} - if (didSuspend) { - // Something suspended inside a hidden tree - // Include the base lanes from the last render - var nextBaseLanes = - prevState !== null - ? mergeLanes(prevState.baseLanes, renderLanes) - : renderLanes; +function updateHostRoot(current, workInProgress, renderLanes) { + pushHostRootContext(workInProgress); - if (current !== null) { - // Reset to the current children - var currentChild = (workInProgress.child = current.child); // The current render suspended, but there may be other lanes with - // pending work. We can't read `childLanes` from the current Offscreen - // fiber because we reset it when it was deferred; however, we can read - // the pending lanes from the child fibers. - - var currentChildLanes = NoLanes; - - while (currentChild !== null) { - currentChildLanes = mergeLanes( - mergeLanes(currentChildLanes, currentChild.lanes), - currentChild.childLanes - ); - currentChild = currentChild.sibling; - } + if (current === null) { + throw new Error('Should have a current fiber. This is a bug in React.'); + } - var lanesWeJustAttempted = nextBaseLanes; - var remainingChildLanes = removeLanes( - currentChildLanes, - lanesWeJustAttempted - ); - workInProgress.childLanes = remainingChildLanes; - } else { - workInProgress.childLanes = NoLanes; - workInProgress.child = null; - } + var nextProps = workInProgress.pendingProps; + var prevState = workInProgress.memoizedState; + var prevChildren = prevState.element; + cloneUpdateQueue(current, workInProgress); + processUpdateQueue(workInProgress, nextProps, null, renderLanes); + var nextState = workInProgress.memoizedState; - return deferHiddenOffscreenComponent( - current, - workInProgress, - nextBaseLanes - ); - } + { + var nextCache = nextState.cache; + pushCacheProvider(workInProgress, nextCache); - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - // In legacy sync mode, don't defer the subtree. Render it now. - // TODO: Consider how Offscreen should work with transitions in the future - var nextState = { - baseLanes: NoLanes, - cachePool: null - }; - workInProgress.memoizedState = nextState; + if (nextCache !== prevState.cache) { + // The root cache refreshed. + propagateContextChange(workInProgress, CacheContext, renderLanes); + } + } // This would ideally go inside processUpdateQueue, but because it suspends, + // it needs to happen after the `pushCacheProvider` call above to avoid a + // context stack mismatch. A bit unfortunate. - { - // push the cache pool even though we're going to bail out - // because otherwise there'd be a context mismatch - if (current !== null) { - pushTransition(workInProgress, null); - } - } - reuseHiddenContextOnStack(workInProgress); - pushOffscreenSuspenseHandler(workInProgress); - } else if (!includesSomeLane(renderLanes, OffscreenLane)) { - // We're hidden, and we're not rendering at Offscreen. We will bail out - // and resume this tree later. - // Schedule this fiber to re-render at Offscreen priority - workInProgress.lanes = workInProgress.childLanes = - laneToLanes(OffscreenLane); // Include the base lanes from the last render - - var _nextBaseLanes = - prevState !== null - ? mergeLanes(prevState.baseLanes, renderLanes) - : renderLanes; - - return deferHiddenOffscreenComponent( - current, - workInProgress, - _nextBaseLanes - ); - } else { - // This is the second render. The surrounding visible content has already - // committed. Now we resume rendering the hidden tree. - // Rendering at offscreen, so we can clear the base lanes. - var _nextState = { - baseLanes: NoLanes, - cachePool: null - }; - workInProgress.memoizedState = _nextState; + suspendIfUpdateReadFromEntangledAsyncAction(); // Caution: React DevTools currently depends on this property + // being called "element". - if (current !== null) { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - var prevCachePool = prevState !== null ? prevState.cachePool : null; // TODO: Consider if and how Offscreen pre-rendering should - // be attributed to the transition that spawned it + var nextChildren = nextState.element; - pushTransition(workInProgress, prevCachePool); - } // Push the lanes that were skipped when we bailed out. + { - if (prevState !== null) { - pushHiddenContext(workInProgress, prevState); - } else { - reuseHiddenContextOnStack(workInProgress); - } + if (nextChildren === prevChildren) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + } - pushOffscreenSuspenseHandler(workInProgress); - } - } else { - // Rendering a visible tree. - if (prevState !== null) { - // We're going from hidden -> visible. - var _prevCachePool = null; + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } - { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - _prevCachePool = prevState.cachePool; - } + return workInProgress.child; +} - pushTransition(workInProgress, _prevCachePool); // Push the lanes that were skipped when we bailed out. +function updateHostComponent$1(current, workInProgress, renderLanes) { - pushHiddenContext(workInProgress, prevState); - reuseSuspenseHandlerOnStack(workInProgress); // Since we're not hidden anymore, reset the state + pushHostContext(workInProgress); + var nextProps = workInProgress.pendingProps; + var prevProps = current !== null ? current.memoizedProps : null; + var nextChildren = nextProps.children; - workInProgress.memoizedState = null; - } else { - // We weren't previously hidden, and we still aren't, so there's nothing - // special to do. Need to push to the stack regardless, though, to avoid - // a push/pop misalignment. - { - // If the render that spawned this one accessed the cache pool, resume - // using the same cache. Unless the parent changed, since that means - // there was a refresh. - if (current !== null) { - pushTransition(workInProgress, null); - } - } // We're about to bail out, but we need to push this to the stack anyway - // to avoid a push/pop misalignment. + if (prevProps !== null && shouldSetTextContent()) { + // If we're switching from a direct text child to a normal child, or to + // empty, we need to schedule the text content to be reset. + workInProgress.flags |= ContentReset; + } - reuseHiddenContextOnStack(workInProgress); - reuseSuspenseHandlerOnStack(workInProgress); - } - } + if (enableAsyncActions) { + var memoizedState = workInProgress.memoizedState; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + if (memoizedState !== null) { + // This fiber has been upgraded to a stateful component. The only way + // happens currently is for form actions. We use hooks to track the + // pending and error state of the form. + // + // Once a fiber is upgraded to be stateful, it remains stateful for the + // rest of its lifetime. + var newState = renderTransitionAwareHostComponentWithHooks(current, workInProgress, renderLanes); // If the transition state changed, propagate the change to all the + // descendents. We use Context as an implementation detail for this. + // + // This is intentionally set here instead of pushHostContext because + // pushHostContext gets called before we process the state hook, to avoid + // a state mismatch in the event that something suspends. + // + // NOTE: This assumes that there cannot be nested transition providers, + // because the only renderer that implements this feature is React DOM, + // and forms cannot be nested. If we did support nested providers, then + // we would need to push a context value even for host fibers that + // haven't been upgraded yet. - function deferHiddenOffscreenComponent( - current, - workInProgress, - nextBaseLanes, - renderLanes - ) { - var nextState = { - baseLanes: nextBaseLanes, - // Save the cache pool so we can resume later. - cachePool: getOffscreenDeferredCache() - }; - workInProgress.memoizedState = nextState; + { + HostTransitionContext._currentValue = newState; + } { - // push the cache pool even though we're going to bail out - // because otherwise there'd be a context mismatch - if (current !== null) { - pushTransition(workInProgress, null); + if (didReceiveUpdate) { + if (current !== null) { + var oldStateHook = current.memoizedState; + var oldState = oldStateHook.memoizedState; // This uses regular equality instead of Object.is because we assume + // that host transition state doesn't include NaN as a valid type. + + if (oldState !== newState) { + propagateContextChange(workInProgress, HostTransitionContext, renderLanes); + } + } } - } // We're about to bail out, but we need to push this to the stack anyway - // to avoid a push/pop misalignment. + } + } + } - reuseHiddenContextOnStack(workInProgress); - pushOffscreenSuspenseHandler(workInProgress); + markRef(current, workInProgress); + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + return workInProgress.child; +} - return null; - } // Note: These happen to have identical begin phases, for now. We shouldn't hold +function updateHostText$1(current, workInProgress) { + // immediately after. - function updateCacheComponent(current, workInProgress, renderLanes) { - prepareToReadContext(workInProgress, renderLanes); - var parentCache = readContext(CacheContext); - if (current === null) { - // Initial mount. Request a fresh cache from the pool. - var freshCache = requestCacheFromPool(renderLanes); - var initialState = { - parent: parentCache, - cache: freshCache - }; - workInProgress.memoizedState = initialState; - initializeUpdateQueue(workInProgress); - pushCacheProvider(workInProgress, freshCache); - } else { - // Check for updates - if (includesSomeLane(current.lanes, renderLanes)) { - cloneUpdateQueue(current, workInProgress); - processUpdateQueue(workInProgress, null, null, renderLanes); - suspendIfUpdateReadFromEntangledAsyncAction(); - } + return null; +} - var prevState = current.memoizedState; - var nextState = workInProgress.memoizedState; // Compare the new parent cache to the previous to see detect there was - // a refresh. - - if (prevState.parent !== parentCache) { - // Refresh in parent. Update the parent. - var derivedState = { - parent: parentCache, - cache: parentCache - }; // Copied from getDerivedStateFromProps implementation. Once the update - // queue is empty, persist the derived state onto the base state. - - workInProgress.memoizedState = derivedState; - - if (workInProgress.lanes === NoLanes) { - var updateQueue = workInProgress.updateQueue; - workInProgress.memoizedState = updateQueue.baseState = derivedState; - } +function mountLazyComponent(_current, workInProgress, elementType, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); + var props = workInProgress.pendingProps; + var lazyComponent = elementType; + var payload = lazyComponent._payload; + var init = lazyComponent._init; + var Component = init(payload); // Store the unwrapped component in the type. - pushCacheProvider(workInProgress, parentCache); // No need to propagate a context change because the refreshed parent - // already did. - } else { - // The parent didn't refresh. Now check if this cache did. - var nextCache = nextState.cache; - pushCacheProvider(workInProgress, nextCache); + workInProgress.type = Component; - if (nextCache !== prevState.cache) { - // This cache refreshed. Propagate a context change. - propagateContextChange(workInProgress, CacheContext, renderLanes); - } - } + if (typeof Component === 'function') { + if (isFunctionClassComponent(Component)) { + var resolvedProps = resolveClassComponentProps(Component, props, false); + workInProgress.tag = ClassComponent; + + { + workInProgress.type = Component = resolveClassForHotReloading(Component); } - var nextChildren = workInProgress.pendingProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } // This should only be called if the name changes + return updateClassComponent(null, workInProgress, Component, resolvedProps, renderLanes); + } else { + var _resolvedProps = disableDefaultPropsExceptForClasses ? props : resolveDefaultPropsOnNonClassComponent(Component, props); - function updateFragment(current, workInProgress, renderLanes) { - var nextChildren = workInProgress.pendingProps; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } + workInProgress.tag = FunctionComponent; + + { + validateFunctionComponentInDev(workInProgress, Component); + workInProgress.type = Component = resolveFunctionForHotReloading(Component); + } - function updateMode(current, workInProgress, renderLanes) { - var nextChildren = workInProgress.pendingProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + return updateFunctionComponent(null, workInProgress, Component, _resolvedProps, renderLanes); } + } else if (Component !== undefined && Component !== null) { + var $$typeof = Component.$$typeof; - function updateProfiler(current, workInProgress, renderLanes) { - { - workInProgress.flags |= Update; + if ($$typeof === REACT_FORWARD_REF_TYPE) { + var _resolvedProps2 = disableDefaultPropsExceptForClasses ? props : resolveDefaultPropsOnNonClassComponent(Component, props); - { - // Reset effect durations for the next eventual effect phase. - // These are reset during render to allow the DevTools commit hook a chance to read them, - var stateNode = workInProgress.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } + workInProgress.tag = ForwardRef; + + { + workInProgress.type = Component = resolveForwardRefForHotReloading(Component); } - var nextProps = workInProgress.pendingProps; - var nextChildren = nextProps.children; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + return updateForwardRef(null, workInProgress, Component, _resolvedProps2, renderLanes); + } else if ($$typeof === REACT_MEMO_TYPE) { + var _resolvedProps3 = disableDefaultPropsExceptForClasses ? props : resolveDefaultPropsOnNonClassComponent(Component, props); + + workInProgress.tag = MemoComponent; + return updateMemoComponent(null, workInProgress, Component, disableDefaultPropsExceptForClasses ? _resolvedProps3 : resolveDefaultPropsOnNonClassComponent(Component.type, _resolvedProps3), // The inner type can have defaults too + renderLanes); } + } - function markRef(current, workInProgress) { - // TODO: Check props.ref instead of fiber.ref when enableRefAsProp is on. - var ref = workInProgress.ref; + var hint = ''; - if (ref === null) { - if (current !== null && current.ref !== null) { - // Schedule a Ref effect - workInProgress.flags |= Ref | RefStatic; - } - } else { - if (typeof ref !== "function" && typeof ref !== "object") { - throw new Error( - "Expected ref to be a function, an object returned by React.createRef(), or undefined/null." - ); - } + { + if (Component !== null && typeof Component === 'object' && Component.$$typeof === REACT_LAZY_TYPE) { + hint = ' Did you wrap a component in React.lazy() more than once?'; + } + } // This message intentionally doesn't mention ForwardRef or MemoComponent + // because the fact that it's a separate type of work is an + // implementation detail. - if (current === null || current.ref !== ref) { - if (current !== null) { - var oldRef = current.ref; - var newRef = ref; - - if ( - typeof oldRef === "function" && - typeof newRef === "function" && - typeof oldRef.__stringRef === "string" && - oldRef.__stringRef === newRef.__stringRef && - oldRef.__stringRefType === newRef.__stringRefType && - oldRef.__stringRefOwner === newRef.__stringRefOwner - ) { - // Although this is a different callback, it represents the same - // string ref. To avoid breaking old Meta code that relies on string - // refs only being attached once, reuse the old ref. This will - // prevent us from detaching and reattaching the ref on each update. - workInProgress.ref = oldRef; - return; - } - } // Schedule a Ref effect - workInProgress.flags |= Ref | RefStatic; - } - } - } + throw new Error("Element type is invalid. Received a promise that resolves to: " + Component + ". " + ("Lazy element type must resolve to a class or function." + hint)); +} - function mountIncompleteFunctionComponent( - _current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); - workInProgress.tag = FunctionComponent; - return updateFunctionComponent( - null, - workInProgress, - Component, - nextProps, - renderLanes - ); - } - - function updateFunctionComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - { - if ( - Component.prototype && - typeof Component.prototype.render === "function" - ) { - var componentName = getComponentNameFromType(Component) || "Unknown"; - - if (!didWarnAboutBadClass[componentName]) { - error( - "The <%s /> component appears to have a render method, but doesn't extend React.Component. " + - "This is likely to cause errors. Change %s to extend React.Component instead.", - componentName, - componentName - ); +function mountIncompleteClassComponent(_current, workInProgress, Component, nextProps, renderLanes) { + resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); // Promote the fiber to a class and try rendering again. - didWarnAboutBadClass[componentName] = true; - } - } + workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent` + // Push context providers early to prevent context stack mismatches. + // During mounting we don't know the child context yet as the instance doesn't exist. + // We will invalidate the child context in finishClassComponent() right after rendering. - if (workInProgress.mode & StrictLegacyMode) { - ReactStrictModeWarnings.recordLegacyContextWarning( - workInProgress, - null - ); - } + var hasContext; - if (current === null) { - // Some validations were previously done in mountIndeterminateComponent however and are now run - // in updateFuntionComponent but only on mount - validateFunctionComponentInDev(workInProgress, workInProgress.type); - } - } + if (isContextProvider(Component)) { + hasContext = true; + pushContextProvider(workInProgress); + } else { + hasContext = false; + } - var context; + prepareToReadContext(workInProgress, renderLanes); + constructClassInstance(workInProgress, Component, nextProps); + mountClassInstance(workInProgress, Component, nextProps, renderLanes); + return finishClassComponent(null, workInProgress, Component, true, hasContext, renderLanes); +} - { - var unmaskedContext = getUnmaskedContext( - workInProgress, - Component, - true - ); - context = getMaskedContext(workInProgress, unmaskedContext); +function validateFunctionComponentInDev(workInProgress, Component) { + { + if (Component) { + if (Component.childContextTypes) { + error('childContextTypes cannot be defined on a function component.\n' + ' %s.childContextTypes = ...', Component.displayName || Component.name || 'Component'); } + } - var nextChildren; - prepareToReadContext(workInProgress, renderLanes); + if (workInProgress.ref !== null) { + var info = ''; + var componentName = getComponentNameFromType(Component) || 'Unknown'; + var ownerName = getCurrentFiberOwnerNameInDevOrNull(); - { - markComponentRenderStarted(workInProgress); + if (ownerName) { + info += '\n\nCheck the render method of `' + ownerName + '`.'; } - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - nextChildren = renderWithHooks( - current, - workInProgress, - Component, - nextProps, - context, - renderLanes - ); - setIsRendering(false); - } + var warningKey = componentName + '|' + (ownerName || ''); - { - markComponentRenderStopped(); - } + if (!didWarnAboutFunctionRefs[warningKey]) { + didWarnAboutFunctionRefs[warningKey] = true; - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); + error('Function components cannot be given refs. ' + 'Attempts to access this ref will fail. ' + 'Did you mean to use React.forwardRef()?%s', info); } - - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; } - function replayFunctionComponent( - current, - workInProgress, - nextProps, - Component, - secondArg, - renderLanes - ) { - // This function is used to replay a component that previously suspended, - // after its data resolves. It's a simplified version of - // updateFunctionComponent that reuses the hooks from the previous attempt. - prepareToReadContext(workInProgress, renderLanes); + if (!disableDefaultPropsExceptForClasses && Component.defaultProps !== undefined) { + var _componentName = getComponentNameFromType(Component) || 'Unknown'; - { - markComponentRenderStarted(workInProgress); + if (!didWarnAboutDefaultPropsOnFunctionComponent[_componentName]) { + error('%s: Support for defaultProps will be removed from function components ' + 'in a future major release. Use JavaScript default parameters instead.', _componentName); + + didWarnAboutDefaultPropsOnFunctionComponent[_componentName] = true; } + } - var nextChildren = replaySuspendedComponentWithHooks( - current, - workInProgress, - Component, - nextProps, - secondArg - ); + if (typeof Component.getDerivedStateFromProps === 'function') { + var _componentName2 = getComponentNameFromType(Component) || 'Unknown'; - { - markComponentRenderStopped(); - } + if (!didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2]) { + error('%s: Function components do not support getDerivedStateFromProps.', _componentName2); - if (current !== null && !didReceiveUpdate) { - bailoutHooks(current, workInProgress, renderLanes); - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); + didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = true; } + } - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; + if (typeof Component.contextType === 'object' && Component.contextType !== null) { + var _componentName3 = getComponentNameFromType(Component) || 'Unknown'; + + if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) { + error('%s: Function components do not support contextType.', _componentName3); + + didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true; + } } + } +} - function updateClassComponent( - current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - { - // This is used by DevTools to force a boundary to error. - switch (shouldError(workInProgress)) { - case false: { - var _instance = workInProgress.stateNode; - var ctor = workInProgress.type; // TODO This way of resetting the error boundary state is a hack. - // Is there a better way to do this? - - var tempInstance = new ctor( - workInProgress.memoizedProps, - _instance.context - ); - var state = tempInstance.state; +var SUSPENDED_MARKER = { + dehydrated: null, + treeContext: null, + retryLane: NoLane +}; + +function mountSuspenseOffscreenState(renderLanes) { + return { + baseLanes: renderLanes, + cachePool: getSuspendedCache() + }; +} - _instance.updater.enqueueSetState(_instance, state, null); +function updateSuspenseOffscreenState(prevOffscreenState, renderLanes) { + var cachePool = null; - break; - } + { + var prevCachePool = prevOffscreenState.cachePool; - case true: { - workInProgress.flags |= DidCapture; - workInProgress.flags |= ShouldCapture; // eslint-disable-next-line react-internal/prod-error-codes + if (prevCachePool !== null) { + var parentCache = CacheContext._currentValue ; - var error$1 = new Error("Simulated error coming from DevTools"); - var lane = pickArbitraryLane(renderLanes); - workInProgress.lanes = mergeLanes(workInProgress.lanes, lane); // Schedule the error boundary to re-render using updated state + if (prevCachePool.parent !== parentCache) { + // Detected a refresh in the parent. This overrides any previously + // suspended cache. + cachePool = { + parent: parentCache, + pool: parentCache + }; + } else { + // We can reuse the cache from last time. The only thing that would have + // overridden it is a parent refresh, which we checked for above. + cachePool = prevCachePool; + } + } else { + // If there's no previous cache pool, grab the current one. + cachePool = getSuspendedCache(); + } + } + + return { + baseLanes: mergeLanes(prevOffscreenState.baseLanes, renderLanes), + cachePool: cachePool + }; +} // TODO: Probably should inline this back + + +function shouldRemainOnFallback(current, workInProgress, renderLanes) { + // If we're already showing a fallback, there are cases where we need to + // remain on that fallback regardless of whether the content has resolved. + // For example, SuspenseList coordinates when nested content appears. + // TODO: For compatibility with offscreen prerendering, this should also check + // whether the current fiber (if it exists) was visible in the previous tree. + if (current !== null) { + var suspenseState = current.memoizedState; + + if (suspenseState === null) { + // Currently showing content. Don't hide it, even if ForceSuspenseFallback + // is true. More precise name might be "ForceRemainSuspenseFallback". + // Note: This is a factoring smell. Can't remain on a fallback if there's + // no fallback to remain on. + return false; + } + } // Not currently showing content. Consult the Suspense context. - var root = getWorkInProgressRoot(); - if (root === null) { - throw new Error( - "Expected a work-in-progress root. This is a bug in React. Please file an issue." - ); - } + var suspenseContext = suspenseStackCursor.current; + return hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); +} - var update = createClassErrorUpdate(lane); - initializeClassErrorUpdate( - update, - root, - workInProgress, - createCapturedValueAtFiber(error$1, workInProgress) - ); - enqueueCapturedUpdate(workInProgress, update); - break; - } - } - } // Push context providers early to prevent context stack mismatches. - // During mounting we don't know the child context yet as the instance doesn't exist. - // We will invalidate the child context in finishClassComponent() right after rendering. +function getRemainingWorkInPrimaryTree(current, primaryTreeDidDefer, renderLanes) { + var remainingLanes = current !== null ? removeLanes(current.childLanes, renderLanes) : NoLanes; - var hasContext; + if (primaryTreeDidDefer) { + // A useDeferredValue hook spawned a deferred task inside the primary tree. + // Ensure that we retry this component at the deferred priority. + // TODO: We could make this a per-subtree value instead of a global one. + // Would need to track it on the context stack somehow, similar to what + // we'd have to do for resumable contexts. + remainingLanes = mergeLanes(remainingLanes, peekDeferredLane()); + } - if (isContextProvider(Component)) { - hasContext = true; - pushContextProvider(workInProgress); - } else { - hasContext = false; - } - - prepareToReadContext(workInProgress, renderLanes); - var instance = workInProgress.stateNode; - var shouldUpdate; - - if (instance === null) { - resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress); // In the initial pass we might need to construct the instance. - - constructClassInstance(workInProgress, Component, nextProps); - mountClassInstance(workInProgress, Component, nextProps, renderLanes); - shouldUpdate = true; - } else if (current === null) { - // In a resume, we'll already have an instance we can reuse. - shouldUpdate = resumeMountClassInstance( - workInProgress, - Component, - nextProps, - renderLanes - ); - } else { - shouldUpdate = updateClassInstance( - current, - workInProgress, - Component, - nextProps, - renderLanes - ); - } - - var nextUnitOfWork = finishClassComponent( - current, - workInProgress, - Component, - shouldUpdate, - hasContext, - renderLanes - ); + return remainingLanes; +} - { - var inst = workInProgress.stateNode; - - if (shouldUpdate && inst.props !== nextProps) { - if (!didWarnAboutReassigningProps) { - error( - "It looks like %s is reassigning its own `this.props` while rendering. " + - "This is not supported and can lead to confusing bugs.", - getComponentNameFromFiber(workInProgress) || "a component" - ); - } +function updateSuspenseComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend. + + { + if (shouldSuspend(workInProgress)) { + workInProgress.flags |= DidCapture; + } + } + + var showFallback = false; + var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; + + if (didSuspend || shouldRemainOnFallback(current)) { + // Something in this boundary's subtree already suspended. Switch to + // rendering the fallback children. + showFallback = true; + workInProgress.flags &= ~DidCapture; + } // Check if the primary children spawned a deferred task (useDeferredValue) + // during the first pass. + + + var didPrimaryChildrenDefer = (workInProgress.flags & DidDefer) !== NoFlags$1; + workInProgress.flags &= ~DidDefer; // OK, the next part is confusing. We're about to reconcile the Suspense + // boundary's children. This involves some custom reconciliation logic. Two + // main reasons this is so complicated. + // + // First, Legacy Mode has different semantics for backwards compatibility. The + // primary tree will commit in an inconsistent state, so when we do the + // second pass to render the fallback, we do some exceedingly, uh, clever + // hacks to make that not totally break. Like transferring effects and + // deletions from hidden tree. In Concurrent Mode, it's much simpler, + // because we bailout on the primary tree completely and leave it in its old + // state, no effects. Same as what we do for Offscreen (except that + // Offscreen doesn't have the first render pass). + // + // Second is hydration. During hydration, the Suspense fiber has a slightly + // different layout, where the child points to a dehydrated fragment, which + // contains the DOM rendered by the server. + // + // Third, even if you set all that aside, Suspense is like error boundaries in + // that we first we try to render one tree, and if that fails, we render again + // and switch to a different tree. Like a try/catch block. So we have to track + // which branch we're currently rendering. Ideally we would model this using + // a stack. + + if (current === null) { + + var nextPrimaryChildren = nextProps.children; + var nextFallbackChildren = nextProps.fallback; + + if (showFallback) { + pushFallbackTreeSuspenseHandler(workInProgress); + var fallbackFragment = mountSuspenseFallbackChildren(workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + var primaryChildFragment = workInProgress.child; + primaryChildFragment.memoizedState = mountSuspenseOffscreenState(renderLanes); + primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + + return fallbackFragment; + } else if (typeof nextProps.unstable_expectedLoadTime === 'number') { + // This is a CPU-bound tree. Skip this tree and show a placeholder to + // unblock the surrounding content. Then immediately retry after the + // initial commit. + pushFallbackTreeSuspenseHandler(workInProgress); + + var _fallbackFragment = mountSuspenseFallbackChildren(workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + + var _primaryChildFragment = workInProgress.child; + _primaryChildFragment.memoizedState = mountSuspenseOffscreenState(renderLanes); + _primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; // TODO: Transition Tracing is not yet implemented for CPU Suspense. + // Since nothing actually suspended, there will nothing to ping this to + // get it started back up to attempt the next item. While in terms of + // priority this work has the same priority as this current render, it's + // not part of the same transition once the transition has committed. If + // it's sync, we still want to yield so that it can be painted. + // Conceptually, this is really the same as pinging. We can use any + // RetryLane even if it's the one currently rendering since we're leaving + // it behind on this node. + + workInProgress.lanes = SomeRetryLane; + return _fallbackFragment; + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); + return mountSuspensePrimaryChildren(workInProgress, nextPrimaryChildren); + } + } else { + // This is an update. + // Special path for hydration + var prevState = current.memoizedState; + + if (prevState !== null) { + var _dehydrated = prevState.dehydrated; + + if (_dehydrated !== null) { + return updateDehydratedSuspenseComponent(current, workInProgress, didSuspend, didPrimaryChildrenDefer, nextProps, _dehydrated, prevState, renderLanes); + } + } + + if (showFallback) { + pushFallbackTreeSuspenseHandler(workInProgress); + var _nextFallbackChildren = nextProps.fallback; + var _nextPrimaryChildren = nextProps.children; + var fallbackChildFragment = updateSuspenseFallbackChildren(current, workInProgress, _nextPrimaryChildren, _nextFallbackChildren, renderLanes); + var _primaryChildFragment2 = workInProgress.child; + var prevOffscreenState = current.child.memoizedState; + _primaryChildFragment2.memoizedState = prevOffscreenState === null ? mountSuspenseOffscreenState(renderLanes) : updateSuspenseOffscreenState(prevOffscreenState, renderLanes); + + _primaryChildFragment2.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + return fallbackChildFragment; + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); + var _nextPrimaryChildren2 = nextProps.children; - didWarnAboutReassigningProps = true; - } - } + var _primaryChildFragment3 = updateSuspensePrimaryChildren(current, workInProgress, _nextPrimaryChildren2, renderLanes); - return nextUnitOfWork; + workInProgress.memoizedState = null; + return _primaryChildFragment3; } + } +} - function finishClassComponent( - current, - workInProgress, - Component, - shouldUpdate, - hasContext, - renderLanes - ) { - // Refs should update even if shouldComponentUpdate returns false - markRef(current, workInProgress); - var didCaptureError = (workInProgress.flags & DidCapture) !== NoFlags$1; +function mountSuspensePrimaryChildren(workInProgress, primaryChildren, renderLanes) { + var mode = workInProgress.mode; + var primaryChildProps = { + mode: 'visible', + children: primaryChildren + }; + var primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, mode); + primaryChildFragment.return = workInProgress; + workInProgress.child = primaryChildFragment; + return primaryChildFragment; +} - if (!shouldUpdate && !didCaptureError) { - // Context providers should defer to sCU for rendering - if (hasContext) { - invalidateContextProvider(workInProgress, Component, false); - } +function mountSuspenseFallbackChildren(workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var mode = workInProgress.mode; + var progressedPrimaryFragment = workInProgress.child; + var primaryChildProps = { + mode: 'hidden', + children: primaryChildren + }; + var primaryChildFragment; + var fallbackChildFragment; + + if ((mode & ConcurrentMode) === NoMode && progressedPrimaryFragment !== null) { + // In legacy mode, we commit the primary tree as if it successfully + // completed, even though it's in an inconsistent state. + primaryChildFragment = progressedPrimaryFragment; + primaryChildFragment.childLanes = NoLanes; + primaryChildFragment.pendingProps = primaryChildProps; + + if (workInProgress.mode & ProfileMode) { + // Reset the durations from the first pass so they aren't included in the + // final amounts. This seems counterintuitive, since we're intentionally + // not measuring part of the render phase, but this makes it match what we + // do in Concurrent Mode. + primaryChildFragment.actualDuration = 0; + primaryChildFragment.actualStartTime = -1; + primaryChildFragment.selfBaseDuration = 0; + primaryChildFragment.treeBaseDuration = 0; + } + + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); + } else { + primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, mode); + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); + } + + primaryChildFragment.return = workInProgress; + fallbackChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + return fallbackChildFragment; +} - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } +function mountWorkInProgressOffscreenFiber(offscreenProps, mode, renderLanes) { + // The props argument to `createFiberFromOffscreen` is `any` typed, so we use + // this wrapper function to constrain it. + return createFiberFromOffscreen(offscreenProps, mode, NoLanes, null); +} - var instance = workInProgress.stateNode; // Rerender +function updateWorkInProgressOffscreenFiber(current, offscreenProps) { + // The props argument to `createWorkInProgress` is `any` typed, so we use this + // wrapper function to constrain it. + return createWorkInProgress(current, offscreenProps); +} - { - ReactSharedInternals.owner = workInProgress; - } +function updateSuspensePrimaryChildren(current, workInProgress, primaryChildren, renderLanes) { + var currentPrimaryChildFragment = current.child; + var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; + var primaryChildFragment = updateWorkInProgressOffscreenFiber(currentPrimaryChildFragment, { + mode: 'visible', + children: primaryChildren + }); - var nextChildren; + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + primaryChildFragment.lanes = renderLanes; + } - if ( - didCaptureError && - typeof Component.getDerivedStateFromError !== "function" - ) { - // If we captured an error, but getDerivedStateFromError is not defined, - // unmount all the children. componentDidCatch will schedule an update to - // re-render a fallback. This is temporary until we migrate everyone to - // the new API. - // TODO: Warn in a future release. - nextChildren = null; + primaryChildFragment.return = workInProgress; + primaryChildFragment.sibling = null; - { - stopProfilerTimerIfRunning(); - } - } else { - { - markComponentRenderStarted(workInProgress); - } + if (currentFallbackChildFragment !== null) { + // Delete the fallback child fragment + var deletions = workInProgress.deletions; - { - setIsRendering(true); - nextChildren = instance.render(); + if (deletions === null) { + workInProgress.deletions = [currentFallbackChildFragment]; + workInProgress.flags |= ChildDeletion; + } else { + deletions.push(currentFallbackChildFragment); + } + } + + workInProgress.child = primaryChildFragment; + return primaryChildFragment; +} - if (workInProgress.mode & StrictLegacyMode) { - setIsStrictModeForDevtools(true); +function updateSuspenseFallbackChildren(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var mode = workInProgress.mode; + var currentPrimaryChildFragment = current.child; + var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; + var primaryChildProps = { + mode: 'hidden', + children: primaryChildren + }; + var primaryChildFragment; + + if ( // In legacy mode, we commit the primary tree as if it successfully + // completed, even though it's in an inconsistent state. + (mode & ConcurrentMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was + // already cloned. In legacy mode, the only case where this isn't true is + // when DevTools forces us to display a fallback; we skip the first render + // pass entirely and go straight to rendering the fallback. (In Concurrent + // Mode, SuspenseList can also trigger this scenario, but this is a legacy- + // only codepath.) + workInProgress.child !== currentPrimaryChildFragment) { + var progressedPrimaryFragment = workInProgress.child; + primaryChildFragment = progressedPrimaryFragment; + primaryChildFragment.childLanes = NoLanes; + primaryChildFragment.pendingProps = primaryChildProps; + + if (workInProgress.mode & ProfileMode) { + // Reset the durations from the first pass so they aren't included in the + // final amounts. This seems counterintuitive, since we're intentionally + // not measuring part of the render phase, but this makes it match what we + // do in Concurrent Mode. + primaryChildFragment.actualDuration = 0; + primaryChildFragment.actualStartTime = -1; + primaryChildFragment.selfBaseDuration = currentPrimaryChildFragment.selfBaseDuration; + primaryChildFragment.treeBaseDuration = currentPrimaryChildFragment.treeBaseDuration; + } // The fallback fiber was added as a deletion during the first pass. + // However, since we're going to remain on the fallback, we no longer want + // to delete it. + + + workInProgress.deletions = null; + } else { + primaryChildFragment = updateWorkInProgressOffscreenFiber(currentPrimaryChildFragment, primaryChildProps); // Since we're reusing a current tree, we need to reuse the flags, too. + // (We don't do this in legacy mode, because in legacy mode we don't re-use + // the current tree; see previous branch.) + + primaryChildFragment.subtreeFlags = currentPrimaryChildFragment.subtreeFlags & StaticMask; + } + + var fallbackChildFragment; + + if (currentFallbackChildFragment !== null) { + fallbackChildFragment = createWorkInProgress(currentFallbackChildFragment, fallbackChildren); + } else { + fallbackChildFragment = createFiberFromFragment(fallbackChildren, mode, renderLanes, null); // Needs a placement effect because the parent (the Suspense boundary) already + // mounted but this is a new fiber. + + fallbackChildFragment.flags |= Placement; + } + + fallbackChildFragment.return = workInProgress; + primaryChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + return fallbackChildFragment; +} - try { - instance.render(); - } finally { - setIsStrictModeForDevtools(false); - } - } +function retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes) { + // Falling back to client rendering. Because this has performance + // implications, it's considered a recoverable error, even though the user + // likely won't observe anything wrong with the UI. + // This will add the old fiber to the deletion list + reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated. + + var nextProps = workInProgress.pendingProps; + var primaryChildren = nextProps.children; + var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren); // Needs a placement effect because the parent (the Suspense boundary) already + // mounted but this is a new fiber. + + primaryChildFragment.flags |= Placement; + workInProgress.memoizedState = null; + return primaryChildFragment; +} - setIsRendering(false); - } +function mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, primaryChildren, fallbackChildren, renderLanes) { + var fiberMode = workInProgress.mode; + var primaryChildProps = { + mode: 'visible', + children: primaryChildren + }; + var primaryChildFragment = mountWorkInProgressOffscreenFiber(primaryChildProps, fiberMode); + var fallbackChildFragment = createFiberFromFragment(fallbackChildren, fiberMode, renderLanes, null); // Needs a placement effect because the parent (the Suspense + // boundary) already mounted but this is a new fiber. + + fallbackChildFragment.flags |= Placement; + primaryChildFragment.return = workInProgress; + fallbackChildFragment.return = workInProgress; + primaryChildFragment.sibling = fallbackChildFragment; + workInProgress.child = primaryChildFragment; + + if ((workInProgress.mode & ConcurrentMode) !== NoMode) { + // We will have dropped the effect list which contains the + // deletion. We need to reconcile to delete the current child. + reconcileChildFibers(workInProgress, current.child, null, renderLanes); + } + + return fallbackChildFragment; +} - { - markComponentRenderStopped(); - } - } // React DevTools reads this flag. - - workInProgress.flags |= PerformedWork; - - if (current !== null && didCaptureError) { - // If we're recovering from an error, reconcile without reusing any of - // the existing children. Conceptually, the normal children and the children - // that are shown on error are two different sets, so we shouldn't reuse - // normal children even if their identities match. - forceUnmountCurrentAndReconcile( - current, - workInProgress, - nextChildren, - renderLanes - ); - } else { - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - } // Memoize state using the values we just used to render. - // TODO: Restructure so we never read values from the instance. +function updateDehydratedSuspenseComponent(current, workInProgress, didSuspend, didPrimaryChildrenDefer, nextProps, suspenseInstance, suspenseState, renderLanes) { + if (!didSuspend) { + // This is the first render pass. Attempt to hydrate. + pushPrimaryTreeSuspenseHandler(workInProgress); // We should never be hydrating at this point because it is the first pass, + + if (isSuspenseInstanceFallback()) { + // This boundary is in a permanent fallback state. In this case, we'll never + // get an update and we'll never be able to hydrate the final content. Let's just try the + // client side render instead. + var digest; + var message; + var stack = null; + var componentStack = null; + + { + var _getSuspenseInstanceF = getSuspenseInstanceFallbackErrorDetails(); + + digest = _getSuspenseInstanceF.digest; + message = _getSuspenseInstanceF.message; + stack = _getSuspenseInstanceF.stack; + componentStack = _getSuspenseInstanceF.componentStack; + } // TODO: Figure out a better signal than encoding a magic digest value. + + + { + var error; + + if (message) { + // eslint-disable-next-line react-internal/prod-error-codes + error = new Error(message); + } else { + error = new Error('The server could not finish this Suspense boundary, likely ' + 'due to an error during server rendering. ' + 'Switched to client rendering.'); + } // Replace the stack with the server stack - workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it. - if (hasContext) { - invalidateContextProvider(workInProgress, Component, true); + error.stack = stack || ''; + error.digest = digest; + var capturedValue = createCapturedValueFromError(error, componentStack === undefined ? null : componentStack); + queueHydrationError(capturedValue); } - return workInProgress.child; + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); } + // any context has changed, we need to treat is as if the input might have changed. - function pushHostRootContext(workInProgress) { - var root = workInProgress.stateNode; - if (root.pendingContext) { - pushTopLevelContextObject( - workInProgress, - root.pendingContext, - root.pendingContext !== root.context - ); - } else if (root.context) { - // Should always be set - pushTopLevelContextObject(workInProgress, root.context, false); - } + var hasContextChanged = includesSomeLane(renderLanes, current.childLanes); + + if (didReceiveUpdate || hasContextChanged) { + // This boundary has changed since the first render. This means that we are now unable to + // hydrate it. We might still be able to hydrate it using a higher priority lane. + var root = getWorkInProgressRoot(); + + if (root !== null) { + var attemptHydrationAtLane = getBumpedLaneForHydration(root, renderLanes); + + if (attemptHydrationAtLane !== NoLane && attemptHydrationAtLane !== suspenseState.retryLane) { + // Intentionally mutating since this render will get interrupted. This + // is one of the very rare times where we mutate the current tree + // during the render phase. + suspenseState.retryLane = attemptHydrationAtLane; + enqueueConcurrentRenderForLane(current, attemptHydrationAtLane); + scheduleUpdateOnFiber(root, current, attemptHydrationAtLane); // Throw a special object that signals to the work loop that it should + // interrupt the current render. + // + // Because we're inside a React-only execution stack, we don't + // strictly need to throw here — we could instead modify some internal + // work loop state. But using an exception means we don't need to + // check for this case on every iteration of the work loop. So doing + // it this way moves the check out of the fast path. - pushHostContainer(workInProgress, root.containerInfo); + throw SelectiveHydrationException; + } + } // If we did not selectively hydrate, we'll continue rendering without + // hydrating. Mark this tree as suspended to prevent it from committing + // outside a transition. + // + // This path should only happen if the hydration lane already suspended. + // Currently, it also happens during sync updates because there is no + // hydration lane for sync updates. + // TODO: We should ideally have a sync hydration lane that we can apply to do + // a pass where we hydrate this subtree in place using the previous Context and then + // reapply the update afterwards. + + + if (isSuspenseInstancePending()) ; else { + renderDidSuspendDelayIfPossible(); + } + + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); + } else if (isSuspenseInstancePending()) { + // This component is still pending more data from the server, so we can't hydrate its + // content. We treat it as if this component suspended itself. It might seem as if + // we could just try to render it client-side instead. However, this will perform a + // lot of unnecessary work and is unlikely to complete since it often will suspend + // on missing data anyway. Additionally, the server might be able to render more + // than we can on the client yet. In that case we'd end up with more fallback states + // on the client than if we just leave it alone. If the server times out or errors + // these should update this boundary to the permanent Fallback state instead. + // Mark it as having captured (i.e. suspended). + workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment. + + workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result. + + retryDehydratedSuspenseBoundary.bind(null, current); + registerSuspenseInstanceRetry(); + return null; + } else { + var primaryChildren = nextProps.children; + var primaryChildFragment = mountSuspensePrimaryChildren(workInProgress, primaryChildren); // Mark the children as hydrating. This is a fast path to know whether this + // tree is part of a hydrating tree. This is used to determine if a child + // node has fully mounted yet, and for scheduling event replaying. + // Conceptually this is similar to Placement in that a new subtree is + // inserted into the React tree here. It just happens to not need DOM + // mutations because it already exists. + + primaryChildFragment.flags |= Hydrating; + return primaryChildFragment; + } + } else { + // This is the second render pass. We already attempted to hydrated, but + // something either suspended or errored. + if (workInProgress.flags & ForceClientRender) { + // Something errored during hydration. Try again without hydrating. + // The error should've already been logged in throwException. + pushPrimaryTreeSuspenseHandler(workInProgress); + workInProgress.flags &= ~ForceClientRender; + return retrySuspenseComponentWithoutHydrating(current, workInProgress, renderLanes); + } else if (workInProgress.memoizedState !== null) { + // Something suspended and we should still be in dehydrated mode. + // Leave the existing child in place. + // Push to avoid a mismatch + pushFallbackTreeSuspenseHandler(workInProgress); + workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there + // but the normal suspense pass doesn't. + + workInProgress.flags |= DidCapture; + return null; + } else { + // Suspended but we should no longer be in dehydrated mode. + // Therefore we now have to render the fallback. + pushFallbackTreeSuspenseHandler(workInProgress); + var nextPrimaryChildren = nextProps.children; + var nextFallbackChildren = nextProps.fallback; + var fallbackChildFragment = mountSuspenseFallbackAfterRetryWithoutHydrating(current, workInProgress, nextPrimaryChildren, nextFallbackChildren, renderLanes); + var _primaryChildFragment4 = workInProgress.child; + _primaryChildFragment4.memoizedState = mountSuspenseOffscreenState(renderLanes); + _primaryChildFragment4.childLanes = getRemainingWorkInPrimaryTree(current, didPrimaryChildrenDefer, renderLanes); + workInProgress.memoizedState = SUSPENDED_MARKER; + return fallbackChildFragment; } + } +} - function updateHostRoot(current, workInProgress, renderLanes) { - pushHostRootContext(workInProgress); - - if (current === null) { - throw new Error("Should have a current fiber. This is a bug in React."); - } - - var nextProps = workInProgress.pendingProps; - var prevState = workInProgress.memoizedState; - var prevChildren = prevState.element; - cloneUpdateQueue(current, workInProgress); - processUpdateQueue(workInProgress, nextProps, null, renderLanes); - var nextState = workInProgress.memoizedState; - - { - var nextCache = nextState.cache; - pushCacheProvider(workInProgress, nextCache); +function scheduleSuspenseWorkOnFiber(fiber, renderLanes, propagationRoot) { + fiber.lanes = mergeLanes(fiber.lanes, renderLanes); + var alternate = fiber.alternate; - if (nextCache !== prevState.cache) { - // The root cache refreshed. - propagateContextChange(workInProgress, CacheContext, renderLanes); - } - } // This would ideally go inside processUpdateQueue, but because it suspends, - // it needs to happen after the `pushCacheProvider` call above to avoid a - // context stack mismatch. A bit unfortunate. + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, renderLanes); + } - suspendIfUpdateReadFromEntangledAsyncAction(); // Caution: React DevTools currently depends on this property - // being called "element". + scheduleContextWorkOnParentPath(fiber.return, renderLanes, propagationRoot); +} - var nextChildren = nextState.element; +function propagateSuspenseContextChange(workInProgress, firstChild, renderLanes) { + // Mark any Suspense boundaries with fallbacks as having work to do. + // If they were previously forced into fallbacks, they may now be able + // to unblock. + var node = firstChild; - { - if (nextChildren === prevChildren) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } + while (node !== null) { + if (node.tag === SuspenseComponent) { + var state = node.memoizedState; - reconcileChildren(current, workInProgress, nextChildren, renderLanes); + if (state !== null) { + scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); } - - return workInProgress.child; + } else if (node.tag === SuspenseListComponent) { + // If the tail is hidden there might not be an Suspense boundaries + // to schedule work on. In this case we have to schedule it on the + // list itself. + // We don't have to traverse to the children of the list since + // the list will propagate the change when it rerenders. + scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; } - function updateHostComponent$1(current, workInProgress, renderLanes) { - pushHostContext(workInProgress); - var nextProps = workInProgress.pendingProps; - var prevProps = current !== null ? current.memoizedProps : null; - var nextChildren = nextProps.children; + if (node === workInProgress) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - if (prevProps !== null && shouldSetTextContent()) { - // If we're switching from a direct text child to a normal child, or to - // empty, we need to schedule the text content to be reset. - workInProgress.flags |= ContentReset; - } - if (enableAsyncActions) { - var memoizedState = workInProgress.memoizedState; + while (node.sibling === null) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (node.return === null || node.return === workInProgress) { + return; + } - if (memoizedState !== null) { - // This fiber has been upgraded to a stateful component. The only way - // happens currently is for form actions. We use hooks to track the - // pending and error state of the form. - // - // Once a fiber is upgraded to be stateful, it remains stateful for the - // rest of its lifetime. - var newState = renderTransitionAwareHostComponentWithHooks( - current, - workInProgress, - renderLanes - ); // If the transition state changed, propagate the change to all the - // descendents. We use Context as an implementation detail for this. - // - // This is intentionally set here instead of pushHostContext because - // pushHostContext gets called before we process the state hook, to avoid - // a state mismatch in the event that something suspends. - // - // NOTE: This assumes that there cannot be nested transition providers, - // because the only renderer that implements this feature is React DOM, - // and forms cannot be nested. If we did support nested providers, then - // we would need to push a context value even for host fibers that - // haven't been upgraded yet. + node = node.return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - { - HostTransitionContext._currentValue = newState; - } - { - if (didReceiveUpdate) { - if (current !== null) { - var oldStateHook = current.memoizedState; - var oldState = oldStateHook.memoizedState; // This uses regular equality instead of Object.is because we assume - // that host transition state doesn't include NaN as a valid type. - - if (oldState !== newState) { - propagateContextChange( - workInProgress, - HostTransitionContext, - renderLanes - ); - } - } - } - } - } - } + node.sibling.return = node.return; + node = node.sibling; + } +} - markRef(current, workInProgress); - reconcileChildren(current, workInProgress, nextChildren, renderLanes); - return workInProgress.child; - } +function findLastContentRow(firstChild) { + // This is going to find the last row among these children that is already + // showing content on the screen, as opposed to being in fallback state or + // new. If a row has multiple Suspense boundaries, any of them being in the + // fallback state, counts as the whole row being in a fallback state. + // Note that the "rows" will be workInProgress, but any nested children + // will still be current since we haven't rendered them yet. The mounted + // order may not be the same as the new order. We use the new order. + var row = firstChild; + var lastContentRow = null; - function updateHostText$1(current, workInProgress) { - // immediately after. + while (row !== null) { + var currentRow = row.alternate; // New rows can't be content rows. - return null; + if (currentRow !== null && findFirstSuspended(currentRow) === null) { + lastContentRow = row; } - function mountLazyComponent( - _current, - workInProgress, - elementType, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); - var props = workInProgress.pendingProps; - var lazyComponent = elementType; - var payload = lazyComponent._payload; - var init = lazyComponent._init; - var Component = init(payload); // Store the unwrapped component in the type. - - workInProgress.type = Component; - - if (typeof Component === "function") { - if (isFunctionClassComponent(Component)) { - var resolvedProps = resolveClassComponentProps( - Component, - props, - false - ); - workInProgress.tag = ClassComponent; - - { - workInProgress.type = Component = - resolveClassForHotReloading(Component); - } - - return updateClassComponent( - null, - workInProgress, - Component, - resolvedProps, - renderLanes - ); - } else { - var _resolvedProps = disableDefaultPropsExceptForClasses - ? props - : resolveDefaultPropsOnNonClassComponent(Component, props); + row = row.sibling; + } - workInProgress.tag = FunctionComponent; + return lastContentRow; +} - { - validateFunctionComponentInDev(workInProgress, Component); - workInProgress.type = Component = - resolveFunctionForHotReloading(Component); - } +function validateRevealOrder(revealOrder) { + { + if (revealOrder !== undefined && revealOrder !== 'forwards' && revealOrder !== 'backwards' && revealOrder !== 'together' && !didWarnAboutRevealOrder[revealOrder]) { + didWarnAboutRevealOrder[revealOrder] = true; - return updateFunctionComponent( - null, - workInProgress, - Component, - _resolvedProps, - renderLanes - ); - } - } else if (Component !== undefined && Component !== null) { - var $$typeof = Component.$$typeof; + if (typeof revealOrder === 'string') { + switch (revealOrder.toLowerCase()) { + case 'together': + case 'forwards': + case 'backwards': + { + error('"%s" is not a valid value for revealOrder on . ' + 'Use lowercase "%s" instead.', revealOrder, revealOrder.toLowerCase()); - if ($$typeof === REACT_FORWARD_REF_TYPE) { - var _resolvedProps2 = disableDefaultPropsExceptForClasses - ? props - : resolveDefaultPropsOnNonClassComponent(Component, props); + break; + } - workInProgress.tag = ForwardRef; + case 'forward': + case 'backward': + { + error('"%s" is not a valid value for revealOrder on . ' + 'React uses the -s suffix in the spelling. Use "%ss" instead.', revealOrder, revealOrder.toLowerCase()); - { - workInProgress.type = Component = - resolveForwardRefForHotReloading(Component); - } + break; + } - return updateForwardRef( - null, - workInProgress, - Component, - _resolvedProps2, - renderLanes - ); - } else if ($$typeof === REACT_MEMO_TYPE) { - var _resolvedProps3 = disableDefaultPropsExceptForClasses - ? props - : resolveDefaultPropsOnNonClassComponent(Component, props); - - workInProgress.tag = MemoComponent; - return updateMemoComponent( - null, - workInProgress, - Component, - disableDefaultPropsExceptForClasses - ? _resolvedProps3 - : resolveDefaultPropsOnNonClassComponent( - Component.type, - _resolvedProps3 - ), // The inner type can have defaults too - renderLanes - ); - } - } - - var hint = ""; + default: + error('"%s" is not a supported revealOrder on . ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder); - { - if ( - Component !== null && - typeof Component === "object" && - Component.$$typeof === REACT_LAZY_TYPE - ) { - hint = " Did you wrap a component in React.lazy() more than once?"; - } - } // This message intentionally doesn't mention ForwardRef or MemoComponent - // because the fact that it's a separate type of work is an - // implementation detail. - - throw new Error( - "Element type is invalid. Received a promise that resolves to: " + - Component + - ". " + - ("Lazy element type must resolve to a class or function." + hint) - ); - } - - function mountIncompleteClassComponent( - _current, - workInProgress, - Component, - nextProps, - renderLanes - ) { - resetSuspendedCurrentOnMountInLegacyMode(_current, workInProgress); // Promote the fiber to a class and try rendering again. - - workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent` - // Push context providers early to prevent context stack mismatches. - // During mounting we don't know the child context yet as the instance doesn't exist. - // We will invalidate the child context in finishClassComponent() right after rendering. - - var hasContext; - - if (isContextProvider(Component)) { - hasContext = true; - pushContextProvider(workInProgress); + break; + } } else { - hasContext = false; + error('%s is not a supported value for revealOrder on . ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder); } - - prepareToReadContext(workInProgress, renderLanes); - constructClassInstance(workInProgress, Component, nextProps); - mountClassInstance(workInProgress, Component, nextProps, renderLanes); - return finishClassComponent( - null, - workInProgress, - Component, - true, - hasContext, - renderLanes - ); } + } +} - function validateFunctionComponentInDev(workInProgress, Component) { - { - if (Component) { - if (Component.childContextTypes) { - error( - "childContextTypes cannot be defined on a function component.\n" + - " %s.childContextTypes = ...", - Component.displayName || Component.name || "Component" - ); - } - } +function validateTailOptions(tailMode, revealOrder) { + { + if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) { + if (tailMode !== 'collapsed' && tailMode !== 'hidden') { + didWarnAboutTailOptions[tailMode] = true; - if (workInProgress.ref !== null) { - var info = ""; - var componentName = getComponentNameFromType(Component) || "Unknown"; - var ownerName = getCurrentFiberOwnerNameInDevOrNull(); + error('"%s" is not a supported value for tail on . ' + 'Did you mean "collapsed" or "hidden"?', tailMode); + } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') { + didWarnAboutTailOptions[tailMode] = true; - if (ownerName) { - info += "\n\nCheck the render method of `" + ownerName + "`."; - } + error(' is only valid if revealOrder is ' + '"forwards" or "backwards". ' + 'Did you mean to specify revealOrder="forwards"?', tailMode); + } + } + } +} - var warningKey = componentName + "|" + (ownerName || ""); +function validateSuspenseListNestedChild(childSlot, index) { + { + var isAnArray = isArray(childSlot); + var isIterable = !isAnArray && typeof getIteratorFn(childSlot) === 'function'; - if (!didWarnAboutFunctionRefs[warningKey]) { - didWarnAboutFunctionRefs[warningKey] = true; + if (isAnArray || isIterable) { + var type = isAnArray ? 'array' : 'iterable'; - error( - "Function components cannot be given refs. " + - "Attempts to access this ref will fail. " + - "Did you mean to use React.forwardRef()?%s", - info - ); - } - } + error('A nested %s was passed to row #%s in . Wrap it in ' + 'an additional SuspenseList to configure its revealOrder: ' + ' ... ' + '{%s} ... ' + '', type, index, type); - if ( - !disableDefaultPropsExceptForClasses && - Component.defaultProps !== undefined - ) { - var _componentName = getComponentNameFromType(Component) || "Unknown"; + return false; + } + } - if (!didWarnAboutDefaultPropsOnFunctionComponent[_componentName]) { - error( - "%s: Support for defaultProps will be removed from function components " + - "in a future major release. Use JavaScript default parameters instead.", - _componentName - ); + return true; +} - didWarnAboutDefaultPropsOnFunctionComponent[_componentName] = true; +function validateSuspenseListChildren(children, revealOrder) { + { + if ((revealOrder === 'forwards' || revealOrder === 'backwards') && children !== undefined && children !== null && children !== false) { + if (isArray(children)) { + for (var i = 0; i < children.length; i++) { + if (!validateSuspenseListNestedChild(children[i], i)) { + return; } } + } else { + var iteratorFn = getIteratorFn(children); - if (typeof Component.getDerivedStateFromProps === "function") { - var _componentName2 = - getComponentNameFromType(Component) || "Unknown"; - - if ( - !didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] - ) { - error( - "%s: Function components do not support getDerivedStateFromProps.", - _componentName2 - ); - - didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = - true; - } - } + if (typeof iteratorFn === 'function') { + var childrenIterator = iteratorFn.call(children); - if ( - typeof Component.contextType === "object" && - Component.contextType !== null - ) { - var _componentName3 = - getComponentNameFromType(Component) || "Unknown"; + if (childrenIterator) { + var step = childrenIterator.next(); + var _i = 0; - if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) { - error( - "%s: Function components do not support contextType.", - _componentName3 - ); + for (; !step.done; step = childrenIterator.next()) { + if (!validateSuspenseListNestedChild(step.value, _i)) { + return; + } - didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true; + _i++; + } } + } else { + error('A single row was passed to a . ' + 'This is not useful since it needs multiple rows. ' + 'Did you mean to pass multiple children or an array?', revealOrder); } } } + } +} - var SUSPENDED_MARKER = { - dehydrated: null, - treeContext: null, - retryLane: NoLane +function initSuspenseListRenderState(workInProgress, isBackwards, tail, lastContentRow, tailMode) { + var renderState = workInProgress.memoizedState; + + if (renderState === null) { + workInProgress.memoizedState = { + isBackwards: isBackwards, + rendering: null, + renderingStartTime: 0, + last: lastContentRow, + tail: tail, + tailMode: tailMode }; + } else { + // We can reuse the existing object from previous renders. + renderState.isBackwards = isBackwards; + renderState.rendering = null; + renderState.renderingStartTime = 0; + renderState.last = lastContentRow; + renderState.tail = tail; + renderState.tailMode = tailMode; + } +} // This can end up rendering this component multiple passes. +// The first pass splits the children fibers into two sets. A head and tail. +// We first render the head. If anything is in fallback state, we do another +// pass through beginWork to rerender all children (including the tail) with +// the force suspend context. If the first render didn't have anything in +// in fallback state. Then we render each row in the tail one-by-one. +// That happens in the completeWork phase without going back to beginWork. + + +function updateSuspenseListComponent(current, workInProgress, renderLanes) { + var nextProps = workInProgress.pendingProps; + var revealOrder = nextProps.revealOrder; + var tailMode = nextProps.tail; + var newChildren = nextProps.children; + validateRevealOrder(revealOrder); + validateTailOptions(tailMode, revealOrder); + validateSuspenseListChildren(newChildren, revealOrder); + reconcileChildren(current, workInProgress, newChildren, renderLanes); + var suspenseContext = suspenseStackCursor.current; + var shouldForceFallback = hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); + + if (shouldForceFallback) { + suspenseContext = setShallowSuspenseListContext(suspenseContext, ForceSuspenseFallback); + workInProgress.flags |= DidCapture; + } else { + var didSuspendBefore = current !== null && (current.flags & DidCapture) !== NoFlags$1; + + if (didSuspendBefore) { + // If we previously forced a fallback, we need to schedule work + // on any nested boundaries to let them know to try to render + // again. This is the same as context updating. + propagateSuspenseContextChange(workInProgress, workInProgress.child, renderLanes); + } + + suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); + } + + pushSuspenseListContext(workInProgress, suspenseContext); + + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + // In legacy mode, SuspenseList doesn't work so we just + // use make it a noop by treating it as the default revealOrder. + workInProgress.memoizedState = null; + } else { + switch (revealOrder) { + case 'forwards': + { + var lastContentRow = findLastContentRow(workInProgress.child); + var tail; - function mountSuspenseOffscreenState(renderLanes) { - return { - baseLanes: renderLanes, - cachePool: getSuspendedCache() - }; - } + if (lastContentRow === null) { + // The whole list is part of the tail. + // TODO: We could fast path by just rendering the tail now. + tail = workInProgress.child; + workInProgress.child = null; + } else { + // Disconnect the tail rows after the content row. + // We're going to render them separately later. + tail = lastContentRow.sibling; + lastContentRow.sibling = null; + } - function updateSuspenseOffscreenState(prevOffscreenState, renderLanes) { - var cachePool = null; + initSuspenseListRenderState(workInProgress, false, // isBackwards + tail, lastContentRow, tailMode); + break; + } - { - var prevCachePool = prevOffscreenState.cachePool; + case 'backwards': + { + // We're going to find the first row that has existing content. + // At the same time we're going to reverse the list of everything + // we pass in the meantime. That's going to be our tail in reverse + // order. + var _tail = null; + var row = workInProgress.child; + workInProgress.child = null; + + while (row !== null) { + var currentRow = row.alternate; // New rows can't be content rows. + + if (currentRow !== null && findFirstSuspended(currentRow) === null) { + // This is the beginning of the main content. + workInProgress.child = row; + break; + } - if (prevCachePool !== null) { - var parentCache = CacheContext._currentValue; + var nextRow = row.sibling; + row.sibling = _tail; + _tail = row; + row = nextRow; + } // TODO: If workInProgress.child is null, we can continue on the tail immediately. - if (prevCachePool.parent !== parentCache) { - // Detected a refresh in the parent. This overrides any previously - // suspended cache. - cachePool = { - parent: parentCache, - pool: parentCache - }; - } else { - // We can reuse the cache from last time. The only thing that would have - // overridden it is a parent refresh, which we checked for above. - cachePool = prevCachePool; - } - } else { - // If there's no previous cache pool, grab the current one. - cachePool = getSuspendedCache(); - } - } - return { - baseLanes: mergeLanes(prevOffscreenState.baseLanes, renderLanes), - cachePool: cachePool - }; - } // TODO: Probably should inline this back - - function shouldRemainOnFallback(current, workInProgress, renderLanes) { - // If we're already showing a fallback, there are cases where we need to - // remain on that fallback regardless of whether the content has resolved. - // For example, SuspenseList coordinates when nested content appears. - // TODO: For compatibility with offscreen prerendering, this should also check - // whether the current fiber (if it exists) was visible in the previous tree. - if (current !== null) { - var suspenseState = current.memoizedState; + initSuspenseListRenderState(workInProgress, true, // isBackwards + _tail, null, // last + tailMode); + break; + } - if (suspenseState === null) { - // Currently showing content. Don't hide it, even if ForceSuspenseFallback - // is true. More precise name might be "ForceRemainSuspenseFallback". - // Note: This is a factoring smell. Can't remain on a fallback if there's - // no fallback to remain on. - return false; + case 'together': + { + initSuspenseListRenderState(workInProgress, false, // isBackwards + null, // tail + null, // last + undefined); + break; } - } // Not currently showing content. Consult the Suspense context. - var suspenseContext = suspenseStackCursor.current; - return hasSuspenseListContext(suspenseContext, ForceSuspenseFallback); + default: + { + // The default reveal order is the same as not having + // a boundary. + workInProgress.memoizedState = null; + } } + } - function getRemainingWorkInPrimaryTree( - current, - primaryTreeDidDefer, - renderLanes - ) { - var remainingLanes = - current !== null - ? removeLanes(current.childLanes, renderLanes) - : NoLanes; + return workInProgress.child; +} - if (primaryTreeDidDefer) { - // A useDeferredValue hook spawned a deferred task inside the primary tree. - // Ensure that we retry this component at the deferred priority. - // TODO: We could make this a per-subtree value instead of a global one. - // Would need to track it on the context stack somehow, similar to what - // we'd have to do for resumable contexts. - remainingLanes = mergeLanes(remainingLanes, peekDeferredLane()); - } +function updatePortalComponent(current, workInProgress, renderLanes) { + pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); + var nextChildren = workInProgress.pendingProps; + + if (current === null) { + // Portals are special because we don't append the children during mount + // but at commit. Therefore we need to track insertions which the normal + // flow doesn't do during mount. This doesn't happen at the root because + // the root always starts with a "current" with a null child. + // TODO: Consider unifying this with how the root works. + workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderLanes); + } else { + reconcileChildren(current, workInProgress, nextChildren, renderLanes); + } + + return workInProgress.child; +} - return remainingLanes; - } +var hasWarnedAboutUsingNoValuePropOnContextProvider = false; - function updateSuspenseComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend. +function updateContextProvider(current, workInProgress, renderLanes) { + var context; - { - if (shouldSuspend(workInProgress)) { - workInProgress.flags |= DidCapture; - } + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; + } + + var newProps = workInProgress.pendingProps; + var oldProps = workInProgress.memoizedProps; + var newValue = newProps.value; + + { + if (!('value' in newProps)) { + if (!hasWarnedAboutUsingNoValuePropOnContextProvider) { + hasWarnedAboutUsingNoValuePropOnContextProvider = true; + + error('The `value` prop is required for the ``. Did you misspell it or forget to pass it?'); } + } + } - var showFallback = false; - var didSuspend = (workInProgress.flags & DidCapture) !== NoFlags$1; + pushProvider(workInProgress, context, newValue); - if (didSuspend || shouldRemainOnFallback(current)) { - // Something in this boundary's subtree already suspended. Switch to - // rendering the fallback children. - showFallback = true; - workInProgress.flags &= ~DidCapture; - } // Check if the primary children spawned a deferred task (useDeferredValue) - // during the first pass. + { + if (oldProps !== null) { + var oldValue = oldProps.value; - var didPrimaryChildrenDefer = - (workInProgress.flags & DidDefer) !== NoFlags$1; - workInProgress.flags &= ~DidDefer; // OK, the next part is confusing. We're about to reconcile the Suspense - // boundary's children. This involves some custom reconciliation logic. Two - // main reasons this is so complicated. - // - // First, Legacy Mode has different semantics for backwards compatibility. The - // primary tree will commit in an inconsistent state, so when we do the - // second pass to render the fallback, we do some exceedingly, uh, clever - // hacks to make that not totally break. Like transferring effects and - // deletions from hidden tree. In Concurrent Mode, it's much simpler, - // because we bailout on the primary tree completely and leave it in its old - // state, no effects. Same as what we do for Offscreen (except that - // Offscreen doesn't have the first render pass). - // - // Second is hydration. During hydration, the Suspense fiber has a slightly - // different layout, where the child points to a dehydrated fragment, which - // contains the DOM rendered by the server. - // - // Third, even if you set all that aside, Suspense is like error boundaries in - // that we first we try to render one tree, and if that fails, we render again - // and switch to a different tree. Like a try/catch block. So we have to track - // which branch we're currently rendering. Ideally we would model this using - // a stack. - - if (current === null) { - var nextPrimaryChildren = nextProps.children; - var nextFallbackChildren = nextProps.fallback; - - if (showFallback) { - pushFallbackTreeSuspenseHandler(workInProgress); - var fallbackFragment = mountSuspenseFallbackChildren( - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - var primaryChildFragment = workInProgress.child; - primaryChildFragment.memoizedState = - mountSuspenseOffscreenState(renderLanes); - primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - - return fallbackFragment; - } else if (typeof nextProps.unstable_expectedLoadTime === "number") { - // This is a CPU-bound tree. Skip this tree and show a placeholder to - // unblock the surrounding content. Then immediately retry after the - // initial commit. - pushFallbackTreeSuspenseHandler(workInProgress); - - var _fallbackFragment = mountSuspenseFallbackChildren( - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - - var _primaryChildFragment = workInProgress.child; - _primaryChildFragment.memoizedState = - mountSuspenseOffscreenState(renderLanes); - _primaryChildFragment.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; // TODO: Transition Tracing is not yet implemented for CPU Suspense. - // Since nothing actually suspended, there will nothing to ping this to - // get it started back up to attempt the next item. While in terms of - // priority this work has the same priority as this current render, it's - // not part of the same transition once the transition has committed. If - // it's sync, we still want to yield so that it can be painted. - // Conceptually, this is really the same as pinging. We can use any - // RetryLane even if it's the one currently rendering since we're leaving - // it behind on this node. - - workInProgress.lanes = SomeRetryLane; - return _fallbackFragment; - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - return mountSuspensePrimaryChildren( - workInProgress, - nextPrimaryChildren - ); + if (objectIs(oldValue, newValue)) { + // No change. Bailout early if children are the same. + if (oldProps.children === newProps.children && !hasContextChanged()) { + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); } } else { - // This is an update. - // Special path for hydration - var prevState = current.memoizedState; + // The context value changed. Search for matching consumers and schedule + // them to update. + propagateContextChange(workInProgress, context, renderLanes); + } + } + } - if (prevState !== null) { - var _dehydrated = prevState.dehydrated; - - if (_dehydrated !== null) { - return updateDehydratedSuspenseComponent( - current, - workInProgress, - didSuspend, - didPrimaryChildrenDefer, - nextProps, - _dehydrated, - prevState, - renderLanes - ); - } - } + var newChildren = newProps.children; + reconcileChildren(current, workInProgress, newChildren, renderLanes); + return workInProgress.child; +} - if (showFallback) { - pushFallbackTreeSuspenseHandler(workInProgress); - var _nextFallbackChildren = nextProps.fallback; - var _nextPrimaryChildren = nextProps.children; - var fallbackChildFragment = updateSuspenseFallbackChildren( - current, - workInProgress, - _nextPrimaryChildren, - _nextFallbackChildren, - renderLanes - ); - var _primaryChildFragment2 = workInProgress.child; - var prevOffscreenState = current.child.memoizedState; - _primaryChildFragment2.memoizedState = - prevOffscreenState === null - ? mountSuspenseOffscreenState(renderLanes) - : updateSuspenseOffscreenState(prevOffscreenState, renderLanes); - - _primaryChildFragment2.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - return fallbackChildFragment; - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - var _nextPrimaryChildren2 = nextProps.children; +function updateContextConsumer(current, workInProgress, renderLanes) { + var context; - var _primaryChildFragment3 = updateSuspensePrimaryChildren( - current, - workInProgress, - _nextPrimaryChildren2, - renderLanes - ); + if (enableRenderableContext) { + var consumerType = workInProgress.type; + context = consumerType._context; + } else { + context = workInProgress.type; - workInProgress.memoizedState = null; - return _primaryChildFragment3; - } + { + if (context._context !== undefined) { + context = context._context; } } + } - function mountSuspensePrimaryChildren( - workInProgress, - primaryChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var primaryChildProps = { - mode: "visible", - children: primaryChildren - }; - var primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - mode - ); - primaryChildFragment.return = workInProgress; - workInProgress.child = primaryChildFragment; - return primaryChildFragment; - } + var newProps = workInProgress.pendingProps; + var render = newProps.children; - function mountSuspenseFallbackChildren( - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var progressedPrimaryFragment = workInProgress.child; - var primaryChildProps = { - mode: "hidden", - children: primaryChildren - }; - var primaryChildFragment; - var fallbackChildFragment; - - if ( - (mode & ConcurrentMode) === NoMode && - progressedPrimaryFragment !== null - ) { - // In legacy mode, we commit the primary tree as if it successfully - // completed, even though it's in an inconsistent state. - primaryChildFragment = progressedPrimaryFragment; - primaryChildFragment.childLanes = NoLanes; - primaryChildFragment.pendingProps = primaryChildProps; - - if (workInProgress.mode & ProfileMode) { - // Reset the durations from the first pass so they aren't included in the - // final amounts. This seems counterintuitive, since we're intentionally - // not measuring part of the render phase, but this makes it match what we - // do in Concurrent Mode. - primaryChildFragment.actualDuration = 0; - primaryChildFragment.actualStartTime = -1; - primaryChildFragment.selfBaseDuration = 0; - primaryChildFragment.treeBaseDuration = 0; - } - - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); - } else { - primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - mode - ); - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); - } - - primaryChildFragment.return = workInProgress; - fallbackChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - return fallbackChildFragment; + { + if (typeof render !== 'function') { + error('A context consumer was rendered with multiple children, or a child ' + "that isn't a function. A context consumer expects a single child " + 'that is a function. If you did pass a function, make sure there ' + 'is no trailing or leading whitespace around it.'); } + } - function mountWorkInProgressOffscreenFiber( - offscreenProps, - mode, - renderLanes - ) { - // The props argument to `createFiberFromOffscreen` is `any` typed, so we use - // this wrapper function to constrain it. - return createFiberFromOffscreen(offscreenProps, mode, NoLanes, null); - } - - function updateWorkInProgressOffscreenFiber(current, offscreenProps) { - // The props argument to `createWorkInProgress` is `any` typed, so we use this - // wrapper function to constrain it. - return createWorkInProgress(current, offscreenProps); - } - - function updateSuspensePrimaryChildren( - current, - workInProgress, - primaryChildren, - renderLanes - ) { - var currentPrimaryChildFragment = current.child; - var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; - var primaryChildFragment = updateWorkInProgressOffscreenFiber( - currentPrimaryChildFragment, - { - mode: "visible", - children: primaryChildren - } - ); - - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - primaryChildFragment.lanes = renderLanes; - } - - primaryChildFragment.return = workInProgress; - primaryChildFragment.sibling = null; + prepareToReadContext(workInProgress, renderLanes); + var newValue = readContext(context); - if (currentFallbackChildFragment !== null) { - // Delete the fallback child fragment - var deletions = workInProgress.deletions; + { + markComponentRenderStarted(workInProgress); + } - if (deletions === null) { - workInProgress.deletions = [currentFallbackChildFragment]; - workInProgress.flags |= ChildDeletion; - } else { - deletions.push(currentFallbackChildFragment); - } - } + var newChildren; - workInProgress.child = primaryChildFragment; - return primaryChildFragment; - } + { + ReactSharedInternals.owner = workInProgress; + setIsRendering(true); + newChildren = render(newValue); + setIsRendering(false); + } - function updateSuspenseFallbackChildren( - current, - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var mode = workInProgress.mode; - var currentPrimaryChildFragment = current.child; - var currentFallbackChildFragment = currentPrimaryChildFragment.sibling; - var primaryChildProps = { - mode: "hidden", - children: primaryChildren - }; - var primaryChildFragment; - - if ( - // In legacy mode, we commit the primary tree as if it successfully - // completed, even though it's in an inconsistent state. - (mode & ConcurrentMode) === NoMode && // Make sure we're on the second pass, i.e. the primary child fragment was - // already cloned. In legacy mode, the only case where this isn't true is - // when DevTools forces us to display a fallback; we skip the first render - // pass entirely and go straight to rendering the fallback. (In Concurrent - // Mode, SuspenseList can also trigger this scenario, but this is a legacy- - // only codepath.) - workInProgress.child !== currentPrimaryChildFragment - ) { - var progressedPrimaryFragment = workInProgress.child; - primaryChildFragment = progressedPrimaryFragment; - primaryChildFragment.childLanes = NoLanes; - primaryChildFragment.pendingProps = primaryChildProps; - - if (workInProgress.mode & ProfileMode) { - // Reset the durations from the first pass so they aren't included in the - // final amounts. This seems counterintuitive, since we're intentionally - // not measuring part of the render phase, but this makes it match what we - // do in Concurrent Mode. - primaryChildFragment.actualDuration = 0; - primaryChildFragment.actualStartTime = -1; - primaryChildFragment.selfBaseDuration = - currentPrimaryChildFragment.selfBaseDuration; - primaryChildFragment.treeBaseDuration = - currentPrimaryChildFragment.treeBaseDuration; - } // The fallback fiber was added as a deletion during the first pass. - // However, since we're going to remain on the fallback, we no longer want - // to delete it. - - workInProgress.deletions = null; - } else { - primaryChildFragment = updateWorkInProgressOffscreenFiber( - currentPrimaryChildFragment, - primaryChildProps - ); // Since we're reusing a current tree, we need to reuse the flags, too. - // (We don't do this in legacy mode, because in legacy mode we don't re-use - // the current tree; see previous branch.) + { + markComponentRenderStopped(); + } // React DevTools reads this flag. - primaryChildFragment.subtreeFlags = - currentPrimaryChildFragment.subtreeFlags & StaticMask; - } - var fallbackChildFragment; + workInProgress.flags |= PerformedWork; + reconcileChildren(current, workInProgress, newChildren, renderLanes); + return workInProgress.child; +} - if (currentFallbackChildFragment !== null) { - fallbackChildFragment = createWorkInProgress( - currentFallbackChildFragment, - fallbackChildren - ); - } else { - fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - mode, - renderLanes, - null - ); // Needs a placement effect because the parent (the Suspense boundary) already - // mounted but this is a new fiber. +function markWorkInProgressReceivedUpdate() { + didReceiveUpdate = true; +} - fallbackChildFragment.flags |= Placement; - } +function resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress) { + if ((workInProgress.mode & ConcurrentMode) === NoMode) { + if (current !== null) { + // A lazy component only mounts if it suspended inside a non- + // concurrent tree, in an inconsistent state. We want to treat it like + // a new mount, even though an empty version of it already committed. + // Disconnect the alternate pointers. + current.alternate = null; + workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect - fallbackChildFragment.return = workInProgress; - primaryChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - return fallbackChildFragment; + workInProgress.flags |= Placement; } + } +} - function retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ) { - // Falling back to client rendering. Because this has performance - // implications, it's considered a recoverable error, even though the user - // likely won't observe anything wrong with the UI. - // This will add the old fiber to the deletion list - reconcileChildFibers(workInProgress, current.child, null, renderLanes); // We're now not suspended nor dehydrated. +function bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes) { + if (current !== null) { + // Reuse previous dependencies + workInProgress.dependencies = current.dependencies; + } - var nextProps = workInProgress.pendingProps; - var primaryChildren = nextProps.children; - var primaryChildFragment = mountSuspensePrimaryChildren( - workInProgress, - primaryChildren - ); // Needs a placement effect because the parent (the Suspense boundary) already - // mounted but this is a new fiber. + { + // Don't update "base" render times for bailouts. + stopProfilerTimerIfRunning(); + } - primaryChildFragment.flags |= Placement; - workInProgress.memoizedState = null; - return primaryChildFragment; + markSkippedUpdateLanes(workInProgress.lanes); // Check if the children have any pending work. + + if (!includesSomeLane(renderLanes, workInProgress.childLanes)) { + // The children don't have any work either. We can skip them. + // TODO: Once we add back resuming, we should check if the children are + // a work-in-progress set. If so, we need to transfer their effects. + { + return null; } + } // This fiber doesn't have work, but its subtree does. Clone the child + // fibers and continue. - function mountSuspenseFallbackAfterRetryWithoutHydrating( - current, - workInProgress, - primaryChildren, - fallbackChildren, - renderLanes - ) { - var fiberMode = workInProgress.mode; - var primaryChildProps = { - mode: "visible", - children: primaryChildren - }; - var primaryChildFragment = mountWorkInProgressOffscreenFiber( - primaryChildProps, - fiberMode - ); - var fallbackChildFragment = createFiberFromFragment( - fallbackChildren, - fiberMode, - renderLanes, - null - ); // Needs a placement effect because the parent (the Suspense - // boundary) already mounted but this is a new fiber. - - fallbackChildFragment.flags |= Placement; - primaryChildFragment.return = workInProgress; - fallbackChildFragment.return = workInProgress; - primaryChildFragment.sibling = fallbackChildFragment; - workInProgress.child = primaryChildFragment; - - if ((workInProgress.mode & ConcurrentMode) !== NoMode) { - // We will have dropped the effect list which contains the - // deletion. We need to reconcile to delete the current child. - reconcileChildFibers(workInProgress, current.child, null, renderLanes); - } - return fallbackChildFragment; - } + cloneChildFibers(current, workInProgress); + return workInProgress.child; +} - function updateDehydratedSuspenseComponent( - current, - workInProgress, - didSuspend, - didPrimaryChildrenDefer, - nextProps, - suspenseInstance, - suspenseState, - renderLanes - ) { - if (!didSuspend) { - // This is the first render pass. Attempt to hydrate. - pushPrimaryTreeSuspenseHandler(workInProgress); // We should never be hydrating at this point because it is the first pass, - - if (isSuspenseInstanceFallback()) { - // This boundary is in a permanent fallback state. In this case, we'll never - // get an update and we'll never be able to hydrate the final content. Let's just try the - // client side render instead. - var digest; - var message; - var stack = null; - var componentStack = null; +function remountFiber(current, oldWorkInProgress, newWorkInProgress) { + { + var returnFiber = oldWorkInProgress.return; - { - var _getSuspenseInstanceF = - getSuspenseInstanceFallbackErrorDetails(); + if (returnFiber === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Cannot swap the root fiber.'); + } // Disconnect from the old current. + // It will get deleted. - digest = _getSuspenseInstanceF.digest; - message = _getSuspenseInstanceF.message; - stack = _getSuspenseInstanceF.stack; - componentStack = _getSuspenseInstanceF.componentStack; - } // TODO: Figure out a better signal than encoding a magic digest value. - { - var error; + current.alternate = null; + oldWorkInProgress.alternate = null; // Connect to the new tree. - if (message) { - // eslint-disable-next-line react-internal/prod-error-codes - error = new Error(message); - } else { - error = new Error( - "The server could not finish this Suspense boundary, likely " + - "due to an error during server rendering. " + - "Switched to client rendering." - ); - } // Replace the stack with the server stack - - error.stack = stack || ""; - error.digest = digest; - var capturedValue = createCapturedValueFromError( - error, - componentStack === undefined ? null : componentStack - ); - queueHydrationError(capturedValue); - } + newWorkInProgress.index = oldWorkInProgress.index; + newWorkInProgress.sibling = oldWorkInProgress.sibling; + newWorkInProgress.return = oldWorkInProgress.return; + newWorkInProgress.ref = oldWorkInProgress.ref; - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } - // any context has changed, we need to treat is as if the input might have changed. + { + newWorkInProgress._debugInfo = oldWorkInProgress._debugInfo; + } // Replace the child/sibling pointers above it. - var hasContextChanged = includesSomeLane( - renderLanes, - current.childLanes - ); - if (didReceiveUpdate || hasContextChanged) { - // This boundary has changed since the first render. This means that we are now unable to - // hydrate it. We might still be able to hydrate it using a higher priority lane. - var root = getWorkInProgressRoot(); + if (oldWorkInProgress === returnFiber.child) { + returnFiber.child = newWorkInProgress; + } else { + var prevSibling = returnFiber.child; - if (root !== null) { - var attemptHydrationAtLane = getBumpedLaneForHydration( - root, - renderLanes - ); + if (prevSibling === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Expected parent to have a child.'); + } // $FlowFixMe[incompatible-use] found when upgrading Flow - if ( - attemptHydrationAtLane !== NoLane && - attemptHydrationAtLane !== suspenseState.retryLane - ) { - // Intentionally mutating since this render will get interrupted. This - // is one of the very rare times where we mutate the current tree - // during the render phase. - suspenseState.retryLane = attemptHydrationAtLane; - enqueueConcurrentRenderForLane(current, attemptHydrationAtLane); - scheduleUpdateOnFiber(root, current, attemptHydrationAtLane); // Throw a special object that signals to the work loop that it should - // interrupt the current render. - // - // Because we're inside a React-only execution stack, we don't - // strictly need to throw here — we could instead modify some internal - // work loop state. But using an exception means we don't need to - // check for this case on every iteration of the work loop. So doing - // it this way moves the check out of the fast path. - throw SelectiveHydrationException; - } - } // If we did not selectively hydrate, we'll continue rendering without - // hydrating. Mark this tree as suspended to prevent it from committing - // outside a transition. - // - // This path should only happen if the hydration lane already suspended. - // Currently, it also happens during sync updates because there is no - // hydration lane for sync updates. - // TODO: We should ideally have a sync hydration lane that we can apply to do - // a pass where we hydrate this subtree in place using the previous Context and then - // reapply the update afterwards. - - if (isSuspenseInstancePending()); - else { - renderDidSuspendDelayIfPossible(); - } + while (prevSibling.sibling !== oldWorkInProgress) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + prevSibling = prevSibling.sibling; - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } else if (isSuspenseInstancePending()) { - // This component is still pending more data from the server, so we can't hydrate its - // content. We treat it as if this component suspended itself. It might seem as if - // we could just try to render it client-side instead. However, this will perform a - // lot of unnecessary work and is unlikely to complete since it often will suspend - // on missing data anyway. Additionally, the server might be able to render more - // than we can on the client yet. In that case we'd end up with more fallback states - // on the client than if we just leave it alone. If the server times out or errors - // these should update this boundary to the permanent Fallback state instead. - // Mark it as having captured (i.e. suspended). - workInProgress.flags |= DidCapture; // Leave the child in place. I.e. the dehydrated fragment. - - workInProgress.child = current.child; // Register a callback to retry this boundary once the server has sent the result. - - retryDehydratedSuspenseBoundary.bind(null, current); - registerSuspenseInstanceRetry(); - return null; - } else { - var primaryChildren = nextProps.children; - var primaryChildFragment = mountSuspensePrimaryChildren( - workInProgress, - primaryChildren - ); // Mark the children as hydrating. This is a fast path to know whether this - // tree is part of a hydrating tree. This is used to determine if a child - // node has fully mounted yet, and for scheduling event replaying. - // Conceptually this is similar to Placement in that a new subtree is - // inserted into the React tree here. It just happens to not need DOM - // mutations because it already exists. - - primaryChildFragment.flags |= Hydrating; - return primaryChildFragment; + if (prevSibling === null) { + // eslint-disable-next-line react-internal/prod-error-codes + throw new Error('Expected to find the previous sibling.'); } - } else { - // This is the second render pass. We already attempted to hydrated, but - // something either suspended or errored. - if (workInProgress.flags & ForceClientRender) { - // Something errored during hydration. Try again without hydrating. - // The error should've already been logged in throwException. - pushPrimaryTreeSuspenseHandler(workInProgress); - workInProgress.flags &= ~ForceClientRender; - return retrySuspenseComponentWithoutHydrating( - current, - workInProgress, - renderLanes - ); - } else if (workInProgress.memoizedState !== null) { - // Something suspended and we should still be in dehydrated mode. - // Leave the existing child in place. - // Push to avoid a mismatch - pushFallbackTreeSuspenseHandler(workInProgress); - workInProgress.child = current.child; // The dehydrated completion pass expects this flag to be there - // but the normal suspense pass doesn't. + } // $FlowFixMe[incompatible-use] found when upgrading Flow - workInProgress.flags |= DidCapture; - return null; - } else { - // Suspended but we should no longer be in dehydrated mode. - // Therefore we now have to render the fallback. - pushFallbackTreeSuspenseHandler(workInProgress); - var nextPrimaryChildren = nextProps.children; - var nextFallbackChildren = nextProps.fallback; - var fallbackChildFragment = - mountSuspenseFallbackAfterRetryWithoutHydrating( - current, - workInProgress, - nextPrimaryChildren, - nextFallbackChildren, - renderLanes - ); - var _primaryChildFragment4 = workInProgress.child; - _primaryChildFragment4.memoizedState = - mountSuspenseOffscreenState(renderLanes); - _primaryChildFragment4.childLanes = getRemainingWorkInPrimaryTree( - current, - didPrimaryChildrenDefer, - renderLanes - ); - workInProgress.memoizedState = SUSPENDED_MARKER; - return fallbackChildFragment; - } - } - } - function scheduleSuspenseWorkOnFiber(fiber, renderLanes, propagationRoot) { - fiber.lanes = mergeLanes(fiber.lanes, renderLanes); - var alternate = fiber.alternate; + prevSibling.sibling = newWorkInProgress; + } // Delete the old fiber and place the new one. + // Since the old fiber is disconnected, we have to schedule it manually. - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, renderLanes); - } - scheduleContextWorkOnParentPath( - fiber.return, - renderLanes, - propagationRoot - ); + var deletions = returnFiber.deletions; + + if (deletions === null) { + returnFiber.deletions = [current]; + returnFiber.flags |= ChildDeletion; + } else { + deletions.push(current); } - function propagateSuspenseContextChange( - workInProgress, - firstChild, - renderLanes - ) { - // Mark any Suspense boundaries with fallbacks as having work to do. - // If they were previously forced into fallbacks, they may now be able - // to unblock. - var node = firstChild; + newWorkInProgress.flags |= Placement; // Restart work from the new fiber. - while (node !== null) { - if (node.tag === SuspenseComponent) { - var state = node.memoizedState; + return newWorkInProgress; + } +} - if (state !== null) { - scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); - } - } else if (node.tag === SuspenseListComponent) { - // If the tail is hidden there might not be an Suspense boundaries - // to schedule work on. In this case we have to schedule it on the - // list itself. - // We don't have to traverse to the children of the list since - // the list will propagate the change when it rerenders. - scheduleSuspenseWorkOnFiber(node, renderLanes, workInProgress); - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } +function checkScheduledUpdateOrContext(current, renderLanes) { + // Before performing an early bailout, we must check if there are pending + // updates or context. + var updateLanes = current.lanes; - if (node === workInProgress) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + if (includesSomeLane(updateLanes, renderLanes)) { + return true; + } // No pending update, but because context is propagated lazily, we need - while (node.sibling === null) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (node.return === null || node.return === workInProgress) { - return; - } + return false; +} - node = node.return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow +function attemptEarlyBailoutIfNoScheduledUpdate(current, workInProgress, renderLanes) { + // This fiber does not have any pending work. Bailout without entering + // the begin phase. There's still some bookkeeping we that needs to be done + // in this optimized path, mostly pushing stuff onto the stack. + switch (workInProgress.tag) { + case HostRoot: + pushHostRootContext(workInProgress); - node.sibling.return = node.return; - node = node.sibling; + { + var cache = current.memoizedState.cache; + pushCacheProvider(workInProgress, cache); } - } + break; - function findLastContentRow(firstChild) { - // This is going to find the last row among these children that is already - // showing content on the screen, as opposed to being in fallback state or - // new. If a row has multiple Suspense boundaries, any of them being in the - // fallback state, counts as the whole row being in a fallback state. - // Note that the "rows" will be workInProgress, but any nested children - // will still be current since we haven't rendered them yet. The mounted - // order may not be the same as the new order. We use the new order. - var row = firstChild; - var lastContentRow = null; + case HostSingleton: + case HostComponent: + pushHostContext(workInProgress); + break; - while (row !== null) { - var currentRow = row.alternate; // New rows can't be content rows. + case ClassComponent: + { + var Component = workInProgress.type; - if (currentRow !== null && findFirstSuspended(currentRow) === null) { - lastContentRow = row; + if (isContextProvider(Component)) { + pushContextProvider(workInProgress); } - row = row.sibling; + break; } - return lastContentRow; - } + case HostPortal: + pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); + break; - function validateRevealOrder(revealOrder) { + case ContextProvider: { - if ( - revealOrder !== undefined && - revealOrder !== "forwards" && - revealOrder !== "backwards" && - revealOrder !== "together" && - !didWarnAboutRevealOrder[revealOrder] - ) { - didWarnAboutRevealOrder[revealOrder] = true; - - if (typeof revealOrder === "string") { - switch (revealOrder.toLowerCase()) { - case "together": - case "forwards": - case "backwards": { - error( - '"%s" is not a valid value for revealOrder on . ' + - 'Use lowercase "%s" instead.', - revealOrder, - revealOrder.toLowerCase() - ); - - break; - } + var newValue = workInProgress.memoizedProps.value; + var context; - case "forward": - case "backward": { - error( - '"%s" is not a valid value for revealOrder on . ' + - 'React uses the -s suffix in the spelling. Use "%ss" instead.', - revealOrder, - revealOrder.toLowerCase() - ); + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; + } - break; - } + pushProvider(workInProgress, context, newValue); + break; + } - default: - error( - '"%s" is not a supported revealOrder on . ' + - 'Did you mean "together", "forwards" or "backwards"?', - revealOrder - ); + case Profiler: + { + // Profiler should only call onRender when one of its descendants actually rendered. + var hasChildWork = includesSomeLane(renderLanes, workInProgress.childLanes); - break; - } - } else { - error( - "%s is not a supported value for revealOrder on . " + - 'Did you mean "together", "forwards" or "backwards"?', - revealOrder - ); - } + if (hasChildWork) { + workInProgress.flags |= Update; } - } - } - function validateTailOptions(tailMode, revealOrder) { - { - if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) { - if (tailMode !== "collapsed" && tailMode !== "hidden") { - didWarnAboutTailOptions[tailMode] = true; - - error( - '"%s" is not a supported value for tail on . ' + - 'Did you mean "collapsed" or "hidden"?', - tailMode - ); - } else if ( - revealOrder !== "forwards" && - revealOrder !== "backwards" - ) { - didWarnAboutTailOptions[tailMode] = true; - - error( - ' is only valid if revealOrder is ' + - '"forwards" or "backwards". ' + - 'Did you mean to specify revealOrder="forwards"?', - tailMode - ); - } + { + // Reset effect durations for the next eventual effect phase. + // These are reset during render to allow the DevTools commit hook a chance to read them, + var stateNode = workInProgress.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; } } - } - function validateSuspenseListNestedChild(childSlot, index) { + break; + + case SuspenseComponent: { - var isAnArray = isArray(childSlot); - var isIterable = - !isAnArray && typeof getIteratorFn(childSlot) === "function"; - - if (isAnArray || isIterable) { - var type = isAnArray ? "array" : "iterable"; - - error( - "A nested %s was passed to row #%s in . Wrap it in " + - "an additional SuspenseList to configure its revealOrder: " + - " ... " + - "{%s} ... " + - "", - type, - index, - type - ); + var state = workInProgress.memoizedState; - return false; - } - } + if (state !== null) { + if (state.dehydrated !== null) { + // We're not going to render the children, so this is just to maintain + // push/pop symmetry + pushPrimaryTreeSuspenseHandler(workInProgress); // We know that this component will suspend again because if it has + // been unsuspended it has committed as a resolved Suspense component. + // If it needs to be retried, it should have work scheduled on it. - return true; - } + workInProgress.flags |= DidCapture; // We should never render the children of a dehydrated boundary until we + // upgrade it. We return null instead of bailoutOnAlreadyFinishedWork. - function validateSuspenseListChildren(children, revealOrder) { - { - if ( - (revealOrder === "forwards" || revealOrder === "backwards") && - children !== undefined && - children !== null && - children !== false - ) { - if (isArray(children)) { - for (var i = 0; i < children.length; i++) { - if (!validateSuspenseListNestedChild(children[i], i)) { - return; - } - } - } else { - var iteratorFn = getIteratorFn(children); + return null; + } // If this boundary is currently timed out, we need to decide + // whether to retry the primary children, or to skip over it and + // go straight to the fallback. Check the priority of the primary + // child fragment. - if (typeof iteratorFn === "function") { - var childrenIterator = iteratorFn.call(children); - if (childrenIterator) { - var step = childrenIterator.next(); - var _i = 0; + var primaryChildFragment = workInProgress.child; + var primaryChildLanes = primaryChildFragment.childLanes; - for (; !step.done; step = childrenIterator.next()) { - if (!validateSuspenseListNestedChild(step.value, _i)) { - return; - } + if (includesSomeLane(renderLanes, primaryChildLanes)) { + // The primary children have pending work. Use the normal path + // to attempt to render the primary children again. + return updateSuspenseComponent(current, workInProgress, renderLanes); + } else { + // The primary child fragment does not have pending work marked + // on it + pushPrimaryTreeSuspenseHandler(workInProgress); // The primary children do not have pending work with sufficient + // priority. Bailout. - _i++; - } - } + var child = bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); + + if (child !== null) { + // The fallback children have pending work. Skip over the + // primary children and work on the fallback. + return child.sibling; } else { - error( - 'A single row was passed to a . ' + - "This is not useful since it needs multiple rows. " + - "Did you mean to pass multiple children or an array?", - revealOrder - ); + // Note: We can return `null` here because we already checked + // whether there were nested context consumers, via the call to + // `bailoutOnAlreadyFinishedWork` above. + return null; } } + } else { + pushPrimaryTreeSuspenseHandler(workInProgress); } + + break; } - } - function initSuspenseListRenderState( - workInProgress, - isBackwards, - tail, - lastContentRow, - tailMode - ) { - var renderState = workInProgress.memoizedState; + case SuspenseListComponent: + { + var didSuspendBefore = (current.flags & DidCapture) !== NoFlags$1; - if (renderState === null) { - workInProgress.memoizedState = { - isBackwards: isBackwards, - rendering: null, - renderingStartTime: 0, - last: lastContentRow, - tail: tail, - tailMode: tailMode - }; - } else { - // We can reuse the existing object from previous renders. - renderState.isBackwards = isBackwards; - renderState.rendering = null; - renderState.renderingStartTime = 0; - renderState.last = lastContentRow; - renderState.tail = tail; - renderState.tailMode = tailMode; - } - } // This can end up rendering this component multiple passes. - // The first pass splits the children fibers into two sets. A head and tail. - // We first render the head. If anything is in fallback state, we do another - // pass through beginWork to rerender all children (including the tail) with - // the force suspend context. If the first render didn't have anything in - // in fallback state. Then we render each row in the tail one-by-one. - // That happens in the completeWork phase without going back to beginWork. - - function updateSuspenseListComponent(current, workInProgress, renderLanes) { - var nextProps = workInProgress.pendingProps; - var revealOrder = nextProps.revealOrder; - var tailMode = nextProps.tail; - var newChildren = nextProps.children; - validateRevealOrder(revealOrder); - validateTailOptions(tailMode, revealOrder); - validateSuspenseListChildren(newChildren, revealOrder); - reconcileChildren(current, workInProgress, newChildren, renderLanes); - var suspenseContext = suspenseStackCursor.current; - var shouldForceFallback = hasSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - - if (shouldForceFallback) { - suspenseContext = setShallowSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - workInProgress.flags |= DidCapture; - } else { - var didSuspendBefore = - current !== null && (current.flags & DidCapture) !== NoFlags$1; + var _hasChildWork = includesSomeLane(renderLanes, workInProgress.childLanes); if (didSuspendBefore) { - // If we previously forced a fallback, we need to schedule work - // on any nested boundaries to let them know to try to render - // again. This is the same as context updating. - propagateSuspenseContextChange( - workInProgress, - workInProgress.child, - renderLanes - ); - } - - suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); - } + if (_hasChildWork) { + // If something was in fallback state last time, and we have all the + // same children then we're still in progressive loading state. + // Something might get unblocked by state updates or retries in the + // tree which will affect the tail. So we need to use the normal + // path to compute the correct tail. + return updateSuspenseListComponent(current, workInProgress, renderLanes); + } // If none of the children had any work, that means that none of + // them got retried so they'll still be blocked in the same way + // as before. We can fast bail out. - pushSuspenseListContext(workInProgress, suspenseContext); - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - // In legacy mode, SuspenseList doesn't work so we just - // use make it a noop by treating it as the default revealOrder. - workInProgress.memoizedState = null; - } else { - switch (revealOrder) { - case "forwards": { - var lastContentRow = findLastContentRow(workInProgress.child); - var tail; - - if (lastContentRow === null) { - // The whole list is part of the tail. - // TODO: We could fast path by just rendering the tail now. - tail = workInProgress.child; - workInProgress.child = null; - } else { - // Disconnect the tail rows after the content row. - // We're going to render them separately later. - tail = lastContentRow.sibling; - lastContentRow.sibling = null; - } + workInProgress.flags |= DidCapture; + } // If nothing suspended before and we're rendering the same children, + // then the tail doesn't matter. Anything new that suspends will work + // in the "together" mode, so we can continue from the state we had. - initSuspenseListRenderState( - workInProgress, - false, // isBackwards - tail, - lastContentRow, - tailMode - ); - break; - } - case "backwards": { - // We're going to find the first row that has existing content. - // At the same time we're going to reverse the list of everything - // we pass in the meantime. That's going to be our tail in reverse - // order. - var _tail = null; - var row = workInProgress.child; - workInProgress.child = null; + var renderState = workInProgress.memoizedState; - while (row !== null) { - var currentRow = row.alternate; // New rows can't be content rows. + if (renderState !== null) { + // Reset to the "together" mode in case we've started a different + // update in the past but didn't complete it. + renderState.rendering = null; + renderState.tail = null; + renderState.lastEffect = null; + } - if ( - currentRow !== null && - findFirstSuspended(currentRow) === null - ) { - // This is the beginning of the main content. - workInProgress.child = row; - break; - } + pushSuspenseListContext(workInProgress, suspenseStackCursor.current); - var nextRow = row.sibling; - row.sibling = _tail; - _tail = row; - row = nextRow; - } // TODO: If workInProgress.child is null, we can continue on the tail immediately. - - initSuspenseListRenderState( - workInProgress, - true, // isBackwards - _tail, - null, // last - tailMode - ); - break; - } + if (_hasChildWork) { + break; + } else { + // If none of the children had any work, that means that none of + // them got retried so they'll still be blocked in the same way + // as before. We can fast bail out. + return null; + } + } - case "together": { - initSuspenseListRenderState( - workInProgress, - false, // isBackwards - null, // tail - null, // last - undefined - ); - break; - } + case OffscreenComponent: + case LegacyHiddenComponent: + { + // Need to check if the tree still needs to be deferred. This is + // almost identical to the logic used in the normal update path, + // so we'll just enter that. The only difference is we'll bail out + // at the next level instead of this one, because the child props + // have not changed. Which is fine. + // TODO: Probably should refactor `beginWork` to split the bailout + // path from the normal path. I'm tempted to do a labeled break here + // but I won't :) + workInProgress.lanes = NoLanes; + return updateOffscreenComponent(current, workInProgress, renderLanes); + } - default: { - // The default reveal order is the same as not having - // a boundary. - workInProgress.memoizedState = null; - } + case CacheComponent: + { + { + var _cache = current.memoizedState.cache; + pushCacheProvider(workInProgress, _cache); } + + break; } + } + + return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); +} - return workInProgress.child; +function beginWork(current, workInProgress, renderLanes) { + { + if (workInProgress._debugNeedsRemount && current !== null) { + // This will restart the begin phase with a new fiber. + return remountFiber(current, workInProgress, createFiberFromTypeAndProps(workInProgress.type, workInProgress.key, workInProgress.pendingProps, workInProgress._debugOwner || null, workInProgress.mode, workInProgress.lanes)); } + } - function updatePortalComponent(current, workInProgress, renderLanes) { - pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo); - var nextChildren = workInProgress.pendingProps; - - if (current === null) { - // Portals are special because we don't append the children during mount - // but at commit. Therefore we need to track insertions which the normal - // flow doesn't do during mount. This doesn't happen at the root because - // the root always starts with a "current" with a null child. - // TODO: Consider unifying this with how the root works. - workInProgress.child = reconcileChildFibers( - workInProgress, - null, - nextChildren, - renderLanes - ); - } else { - reconcileChildren(current, workInProgress, nextChildren, renderLanes); + if (current !== null) { + var oldProps = current.memoizedProps; + var newProps = workInProgress.pendingProps; + + if (oldProps !== newProps || hasContextChanged() || ( // Force a re-render if the implementation changed due to hot reload: + workInProgress.type !== current.type )) { + // If props or context changed, mark the fiber as having performed work. + // This may be unset if the props are determined to be equal later (memo). + didReceiveUpdate = true; + } else { + // Neither props nor legacy context changes. Check if there's a pending + // update or context change. + var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext(current, renderLanes); + + if (!hasScheduledUpdateOrContext && // If this is the second pass of an error or suspense boundary, there + // may not be work scheduled on `current`, so we check for this flag. + (workInProgress.flags & DidCapture) === NoFlags$1) { + // No pending updates or context. Bail out now. + didReceiveUpdate = false; + return attemptEarlyBailoutIfNoScheduledUpdate(current, workInProgress, renderLanes); } - return workInProgress.child; + if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { + // This is a special case that only exists for legacy mode. + // See https://github.com/facebook/react/pull/19216. + didReceiveUpdate = true; + } else { + // An update was scheduled on this fiber, but there are no new props + // nor legacy context. Set this to false. If an update queue or context + // consumer produces a changed value, it will set this to true. Otherwise, + // the component will assume the children have not changed and bail out. + didReceiveUpdate = false; + } } + } else { + didReceiveUpdate = false; + } // Before entering the begin phase, clear pending update priority. + // TODO: This assumes that we're about to evaluate the component and process + // the update queue. However, there's an exception: SimpleMemoComponent + // sometimes bails out later in the begin phase. This indicates that we should + // move this assignment out of the common path and into each branch. - var hasWarnedAboutUsingNoValuePropOnContextProvider = false; - function updateContextProvider(current, workInProgress, renderLanes) { - var context; + workInProgress.lanes = NoLanes; - if (enableRenderableContext) { - context = workInProgress.type; - } else { - context = workInProgress.type._context; + switch (workInProgress.tag) { + case LazyComponent: + { + var elementType = workInProgress.elementType; + return mountLazyComponent(current, workInProgress, elementType, renderLanes); } - var newProps = workInProgress.pendingProps; - var oldProps = workInProgress.memoizedProps; - var newValue = newProps.value; + case FunctionComponent: + { + var Component = workInProgress.type; + var unresolvedProps = workInProgress.pendingProps; + var resolvedProps = disableDefaultPropsExceptForClasses || workInProgress.elementType === Component ? unresolvedProps : resolveDefaultPropsOnNonClassComponent(Component, unresolvedProps); + return updateFunctionComponent(current, workInProgress, Component, resolvedProps, renderLanes); + } + case ClassComponent: { - if (!("value" in newProps)) { - if (!hasWarnedAboutUsingNoValuePropOnContextProvider) { - hasWarnedAboutUsingNoValuePropOnContextProvider = true; + var _Component = workInProgress.type; + var _unresolvedProps = workInProgress.pendingProps; - error( - "The `value` prop is required for the ``. Did you misspell it or forget to pass it?" - ); - } - } + var _resolvedProps4 = resolveClassComponentProps(_Component, _unresolvedProps, workInProgress.elementType === _Component); + + return updateClassComponent(current, workInProgress, _Component, _resolvedProps4, renderLanes); } - pushProvider(workInProgress, context, newValue); + case HostRoot: + return updateHostRoot(current, workInProgress, renderLanes); - { - if (oldProps !== null) { - var oldValue = oldProps.value; - - if (objectIs(oldValue, newValue)) { - // No change. Bailout early if children are the same. - if ( - oldProps.children === newProps.children && - !hasContextChanged() - ) { - return bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - } - } else { - // The context value changed. Search for matching consumers and schedule - // them to update. - propagateContextChange(workInProgress, context, renderLanes); - } - } - } + case HostHoistable: - var newChildren = newProps.children; - reconcileChildren(current, workInProgress, newChildren, renderLanes); - return workInProgress.child; - } + // Fall through - function updateContextConsumer(current, workInProgress, renderLanes) { - var context; + case HostSingleton: - if (enableRenderableContext) { - var consumerType = workInProgress.type; - context = consumerType._context; - } else { - context = workInProgress.type; + // Fall through - { - if (context._context !== undefined) { - context = context._context; - } - } - } + case HostComponent: + return updateHostComponent$1(current, workInProgress, renderLanes); - var newProps = workInProgress.pendingProps; - var render = newProps.children; + case HostText: + return updateHostText$1(); - { - if (typeof render !== "function") { - error( - "A context consumer was rendered with multiple children, or a child " + - "that isn't a function. A context consumer expects a single child " + - "that is a function. If you did pass a function, make sure there " + - "is no trailing or leading whitespace around it." - ); - } - } + case SuspenseComponent: + return updateSuspenseComponent(current, workInProgress, renderLanes); - prepareToReadContext(workInProgress, renderLanes); - var newValue = readContext(context); + case HostPortal: + return updatePortalComponent(current, workInProgress, renderLanes); + case ForwardRef: { - markComponentRenderStarted(workInProgress); - } + var type = workInProgress.type; + var _unresolvedProps2 = workInProgress.pendingProps; - var newChildren; + var _resolvedProps5 = disableDefaultPropsExceptForClasses || workInProgress.elementType === type ? _unresolvedProps2 : resolveDefaultPropsOnNonClassComponent(type, _unresolvedProps2); - { - ReactSharedInternals.owner = workInProgress; - setIsRendering(true); - newChildren = render(newValue); - setIsRendering(false); + return updateForwardRef(current, workInProgress, type, _resolvedProps5, renderLanes); } - { - markComponentRenderStopped(); - } // React DevTools reads this flag. + case Fragment: + return updateFragment(current, workInProgress, renderLanes); - workInProgress.flags |= PerformedWork; - reconcileChildren(current, workInProgress, newChildren, renderLanes); - return workInProgress.child; - } + case Mode: + return updateMode(current, workInProgress, renderLanes); - function markWorkInProgressReceivedUpdate() { - didReceiveUpdate = true; - } + case Profiler: + return updateProfiler(current, workInProgress, renderLanes); - function resetSuspendedCurrentOnMountInLegacyMode(current, workInProgress) { - if ((workInProgress.mode & ConcurrentMode) === NoMode) { - if (current !== null) { - // A lazy component only mounts if it suspended inside a non- - // concurrent tree, in an inconsistent state. We want to treat it like - // a new mount, even though an empty version of it already committed. - // Disconnect the alternate pointers. - current.alternate = null; - workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect + case ContextProvider: + return updateContextProvider(current, workInProgress, renderLanes); - workInProgress.flags |= Placement; - } - } - } + case ContextConsumer: + return updateContextConsumer(current, workInProgress, renderLanes); - function bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ) { - if (current !== null) { - // Reuse previous dependencies - workInProgress.dependencies = current.dependencies; + case MemoComponent: + { + var _type = workInProgress.type; + var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props. + + var _resolvedProps6 = disableDefaultPropsExceptForClasses ? _unresolvedProps3 : resolveDefaultPropsOnNonClassComponent(_type, _unresolvedProps3); + + _resolvedProps6 = disableDefaultPropsExceptForClasses ? _resolvedProps6 : resolveDefaultPropsOnNonClassComponent(_type.type, _resolvedProps6); + return updateMemoComponent(current, workInProgress, _type, _resolvedProps6, renderLanes); } + case SimpleMemoComponent: { - // Don't update "base" render times for bailouts. - stopProfilerTimerIfRunning(); + return updateSimpleMemoComponent(current, workInProgress, workInProgress.type, workInProgress.pendingProps, renderLanes); } - markSkippedUpdateLanes(workInProgress.lanes); // Check if the children have any pending work. + case IncompleteClassComponent: + { - if (!includesSomeLane(renderLanes, workInProgress.childLanes)) { - // The children don't have any work either. We can skip them. - // TODO: Once we add back resuming, we should check if the children are - // a work-in-progress set. If so, we need to transfer their effects. - { - return null; - } - } // This fiber doesn't have work, but its subtree does. Clone the child - // fibers and continue. + var _Component2 = workInProgress.type; + var _unresolvedProps4 = workInProgress.pendingProps; - cloneChildFibers(current, workInProgress); - return workInProgress.child; - } + var _resolvedProps7 = resolveClassComponentProps(_Component2, _unresolvedProps4, workInProgress.elementType === _Component2); - function remountFiber(current, oldWorkInProgress, newWorkInProgress) { - { - var returnFiber = oldWorkInProgress.return; + return mountIncompleteClassComponent(current, workInProgress, _Component2, _resolvedProps7, renderLanes); + } - if (returnFiber === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Cannot swap the root fiber."); - } // Disconnect from the old current. - // It will get deleted. + case IncompleteFunctionComponent: + { - current.alternate = null; - oldWorkInProgress.alternate = null; // Connect to the new tree. + var _Component3 = workInProgress.type; + var _unresolvedProps5 = workInProgress.pendingProps; - newWorkInProgress.index = oldWorkInProgress.index; - newWorkInProgress.sibling = oldWorkInProgress.sibling; - newWorkInProgress.return = oldWorkInProgress.return; - newWorkInProgress.ref = oldWorkInProgress.ref; + var _resolvedProps8 = resolveClassComponentProps(_Component3, _unresolvedProps5, workInProgress.elementType === _Component3); - { - newWorkInProgress._debugInfo = oldWorkInProgress._debugInfo; - } // Replace the child/sibling pointers above it. + return mountIncompleteFunctionComponent(current, workInProgress, _Component3, _resolvedProps8, renderLanes); + } - if (oldWorkInProgress === returnFiber.child) { - returnFiber.child = newWorkInProgress; - } else { - var prevSibling = returnFiber.child; + case SuspenseListComponent: + { + return updateSuspenseListComponent(current, workInProgress, renderLanes); + } - if (prevSibling === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Expected parent to have a child."); - } // $FlowFixMe[incompatible-use] found when upgrading Flow + case ScopeComponent: + { - while (prevSibling.sibling !== oldWorkInProgress) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - prevSibling = prevSibling.sibling; + break; + } - if (prevSibling === null) { - // eslint-disable-next-line react-internal/prod-error-codes - throw new Error("Expected to find the previous sibling."); - } - } // $FlowFixMe[incompatible-use] found when upgrading Flow + case OffscreenComponent: + { + return updateOffscreenComponent(current, workInProgress, renderLanes); + } - prevSibling.sibling = newWorkInProgress; - } // Delete the old fiber and place the new one. - // Since the old fiber is disconnected, we have to schedule it manually. + case LegacyHiddenComponent: + { - var deletions = returnFiber.deletions; + break; + } - if (deletions === null) { - returnFiber.deletions = [current]; - returnFiber.flags |= ChildDeletion; - } else { - deletions.push(current); + case CacheComponent: + { + { + return updateCacheComponent(current, workInProgress, renderLanes); } + } + } - newWorkInProgress.flags |= Placement; // Restart work from the new fiber. + throw new Error("Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + 'React. Please file an issue.'); +} - return newWorkInProgress; - } - } +var valueCursor = createCursor(null); +var rendererCursorDEV; - function checkScheduledUpdateOrContext(current, renderLanes) { - // Before performing an early bailout, we must check if there are pending - // updates or context. - var updateLanes = current.lanes; +{ + rendererCursorDEV = createCursor(null); +} - if (includesSomeLane(updateLanes, renderLanes)) { - return true; - } // No pending update, but because context is propagated lazily, we need +var rendererSigil; - return false; - } +{ + // Use this to detect multiple renderers using the same context + rendererSigil = {}; +} - function attemptEarlyBailoutIfNoScheduledUpdate( - current, - workInProgress, - renderLanes - ) { - // This fiber does not have any pending work. Bailout without entering - // the begin phase. There's still some bookkeeping we that needs to be done - // in this optimized path, mostly pushing stuff onto the stack. - switch (workInProgress.tag) { - case HostRoot: - pushHostRootContext(workInProgress); +var currentlyRenderingFiber = null; +var lastContextDependency = null; +var lastFullyObservedContext = null; +var isDisallowedContextReadInDEV = false; +function resetContextDependencies() { + // This is called right before React yields execution, to ensure `readContext` + // cannot be called outside the render phase. + currentlyRenderingFiber = null; + lastContextDependency = null; + lastFullyObservedContext = null; + + { + isDisallowedContextReadInDEV = false; + } +} +function enterDisallowedContextReadInDEV() { + { + isDisallowedContextReadInDEV = true; + } +} +function exitDisallowedContextReadInDEV() { + { + isDisallowedContextReadInDEV = false; + } +} +function pushProvider(providerFiber, context, nextValue) { + { + push(valueCursor, context._currentValue, providerFiber); + context._currentValue = nextValue; - { - var cache = current.memoizedState.cache; - pushCacheProvider(workInProgress, cache); - } - break; + { + push(rendererCursorDEV, context._currentRenderer, providerFiber); - case HostSingleton: - case HostComponent: - pushHostContext(workInProgress); - break; + if (context._currentRenderer !== undefined && context._currentRenderer !== null && context._currentRenderer !== rendererSigil) { + error('Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.'); + } - case ClassComponent: { - var Component = workInProgress.type; + context._currentRenderer = rendererSigil; + } + } +} +function popProvider(context, providerFiber) { + var currentValue = valueCursor.current; - if (isContextProvider(Component)) { - pushContextProvider(workInProgress); - } + { + context._currentValue = currentValue; - break; - } + { + var currentRenderer = rendererCursorDEV.current; + pop(rendererCursorDEV, providerFiber); + context._currentRenderer = currentRenderer; + } + } - case HostPortal: - pushHostContainer( - workInProgress, - workInProgress.stateNode.containerInfo - ); - break; + pop(valueCursor, providerFiber); +} +function scheduleContextWorkOnParentPath(parent, renderLanes, propagationRoot) { + // Update the child lanes of all the ancestors, including the alternates. + var node = parent; - case ContextProvider: { - var newValue = workInProgress.memoizedProps.value; - var context; + while (node !== null) { + var alternate = node.alternate; - if (enableRenderableContext) { - context = workInProgress.type; - } else { - context = workInProgress.type._context; - } + if (!isSubsetOfLanes(node.childLanes, renderLanes)) { + node.childLanes = mergeLanes(node.childLanes, renderLanes); - pushProvider(workInProgress, context, newValue); - break; - } + if (alternate !== null) { + alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); + } + } else if (alternate !== null && !isSubsetOfLanes(alternate.childLanes, renderLanes)) { + alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); + } else ; - case Profiler: - { - // Profiler should only call onRender when one of its descendants actually rendered. - var hasChildWork = includesSomeLane( - renderLanes, - workInProgress.childLanes - ); + if (node === propagationRoot) { + break; + } - if (hasChildWork) { - workInProgress.flags |= Update; - } + node = node.return; + } - { - // Reset effect durations for the next eventual effect phase. - // These are reset during render to allow the DevTools commit hook a chance to read them, - var stateNode = workInProgress.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } - } + { + if (node !== propagationRoot) { + error('Expected to find the propagation root when scheduling context work. ' + 'This error is likely caused by a bug in React. Please file an issue.'); + } + } +} +function propagateContextChange(workInProgress, context, renderLanes) { + { + propagateContextChange_eager(workInProgress, context, renderLanes); + } +} - break; +function propagateContextChange_eager(workInProgress, context, renderLanes) { - case SuspenseComponent: { - var state = workInProgress.memoizedState; + var fiber = workInProgress.child; - if (state !== null) { - if (state.dehydrated !== null) { - // We're not going to render the children, so this is just to maintain - // push/pop symmetry - pushPrimaryTreeSuspenseHandler(workInProgress); // We know that this component will suspend again because if it has - // been unsuspended it has committed as a resolved Suspense component. - // If it needs to be retried, it should have work scheduled on it. + if (fiber !== null) { + // Set the return pointer of the child to the work-in-progress fiber. + fiber.return = workInProgress; + } - workInProgress.flags |= DidCapture; // We should never render the children of a dehydrated boundary until we - // upgrade it. We return null instead of bailoutOnAlreadyFinishedWork. + while (fiber !== null) { + var nextFiber = void 0; // Visit this fiber. - return null; - } // If this boundary is currently timed out, we need to decide - // whether to retry the primary children, or to skip over it and - // go straight to the fallback. Check the priority of the primary - // child fragment. + var list = fiber.dependencies; - var primaryChildFragment = workInProgress.child; - var primaryChildLanes = primaryChildFragment.childLanes; - - if (includesSomeLane(renderLanes, primaryChildLanes)) { - // The primary children have pending work. Use the normal path - // to attempt to render the primary children again. - return updateSuspenseComponent( - current, - workInProgress, - renderLanes - ); - } else { - // The primary child fragment does not have pending work marked - // on it - pushPrimaryTreeSuspenseHandler(workInProgress); // The primary children do not have pending work with sufficient - // priority. Bailout. - - var child = bailoutOnAlreadyFinishedWork( - current, - workInProgress, - renderLanes - ); - - if (child !== null) { - // The fallback children have pending work. Skip over the - // primary children and work on the fallback. - return child.sibling; + if (list !== null) { + nextFiber = fiber.child; + var dependency = list.firstContext; + + while (dependency !== null) { + // Check if the context matches. + if (dependency.context === context) { + // Match! Schedule an update on this fiber. + if (fiber.tag === ClassComponent) { + // Schedule a force update on the work-in-progress. + var lane = pickArbitraryLane(renderLanes); + var update = createUpdate(lane); + update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the + // update to the current fiber, too, which means it will persist even if + // this render is thrown away. Since it's a race condition, not sure it's + // worth fixing. + // Inlined `enqueueUpdate` to remove interleaved update check + + var updateQueue = fiber.updateQueue; + + if (updateQueue === null) ; else { + var sharedQueue = updateQueue.shared; + var pending = sharedQueue.pending; + + if (pending === null) { + // This is the first update. Create a circular list. + update.next = update; } else { - // Note: We can return `null` here because we already checked - // whether there were nested context consumers, via the call to - // `bailoutOnAlreadyFinishedWork` above. - return null; + update.next = pending.next; + pending.next = update; } - } - } else { - pushPrimaryTreeSuspenseHandler(workInProgress); - } - - break; - } - case SuspenseListComponent: { - var didSuspendBefore = (current.flags & DidCapture) !== NoFlags$1; - - var _hasChildWork = includesSomeLane( - renderLanes, - workInProgress.childLanes - ); - - if (didSuspendBefore) { - if (_hasChildWork) { - // If something was in fallback state last time, and we have all the - // same children then we're still in progressive loading state. - // Something might get unblocked by state updates or retries in the - // tree which will affect the tail. So we need to use the normal - // path to compute the correct tail. - return updateSuspenseListComponent( - current, - workInProgress, - renderLanes - ); - } // If none of the children had any work, that means that none of - // them got retried so they'll still be blocked in the same way - // as before. We can fast bail out. - - workInProgress.flags |= DidCapture; - } // If nothing suspended before and we're rendering the same children, - // then the tail doesn't matter. Anything new that suspends will work - // in the "together" mode, so we can continue from the state we had. - - var renderState = workInProgress.memoizedState; - - if (renderState !== null) { - // Reset to the "together" mode in case we've started a different - // update in the past but didn't complete it. - renderState.rendering = null; - renderState.tail = null; - renderState.lastEffect = null; + sharedQueue.pending = update; + } } - pushSuspenseListContext(workInProgress, suspenseStackCursor.current); + fiber.lanes = mergeLanes(fiber.lanes, renderLanes); + var alternate = fiber.alternate; - if (_hasChildWork) { - break; - } else { - // If none of the children had any work, that means that none of - // them got retried so they'll still be blocked in the same way - // as before. We can fast bail out. - return null; + if (alternate !== null) { + alternate.lanes = mergeLanes(alternate.lanes, renderLanes); } - } - case OffscreenComponent: - case LegacyHiddenComponent: { - // Need to check if the tree still needs to be deferred. This is - // almost identical to the logic used in the normal update path, - // so we'll just enter that. The only difference is we'll bail out - // at the next level instead of this one, because the child props - // have not changed. Which is fine. - // TODO: Probably should refactor `beginWork` to split the bailout - // path from the normal path. I'm tempted to do a labeled break here - // but I won't :) - workInProgress.lanes = NoLanes; - return updateOffscreenComponent(current, workInProgress, renderLanes); - } + scheduleContextWorkOnParentPath(fiber.return, renderLanes, workInProgress); // Mark the updated lanes on the list, too. - case CacheComponent: { - { - var _cache = current.memoizedState.cache; - pushCacheProvider(workInProgress, _cache); - } + list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the + // dependency list. break; } - } - - return bailoutOnAlreadyFinishedWork(current, workInProgress, renderLanes); - } - function beginWork(current, workInProgress, renderLanes) { - { - if (workInProgress._debugNeedsRemount && current !== null) { - // This will restart the begin phase with a new fiber. - return remountFiber( - current, - workInProgress, - createFiberFromTypeAndProps( - workInProgress.type, - workInProgress.key, - workInProgress.pendingProps, - workInProgress._debugOwner || null, - workInProgress.mode, - workInProgress.lanes - ) - ); - } + dependency = dependency.next; } + } else if (fiber.tag === ContextProvider) { + // Don't scan deeper if this is a matching provider + nextFiber = fiber.type === workInProgress.type ? null : fiber.child; + } else if (fiber.tag === DehydratedFragment) { + // If a dehydrated suspense boundary is in this subtree, we don't know + // if it will have any context consumers in it. The best we can do is + // mark it as having updates. + var parentSuspense = fiber.return; - if (current !== null) { - var oldProps = current.memoizedProps; - var newProps = workInProgress.pendingProps; - - if ( - oldProps !== newProps || - hasContextChanged() || // Force a re-render if the implementation changed due to hot reload: - workInProgress.type !== current.type - ) { - // If props or context changed, mark the fiber as having performed work. - // This may be unset if the props are determined to be equal later (memo). - didReceiveUpdate = true; - } else { - // Neither props nor legacy context changes. Check if there's a pending - // update or context change. - var hasScheduledUpdateOrContext = checkScheduledUpdateOrContext( - current, - renderLanes - ); - - if ( - !hasScheduledUpdateOrContext && // If this is the second pass of an error or suspense boundary, there - // may not be work scheduled on `current`, so we check for this flag. - (workInProgress.flags & DidCapture) === NoFlags$1 - ) { - // No pending updates or context. Bail out now. - didReceiveUpdate = false; - return attemptEarlyBailoutIfNoScheduledUpdate( - current, - workInProgress, - renderLanes - ); - } - - if ((current.flags & ForceUpdateForLegacySuspense) !== NoFlags$1) { - // This is a special case that only exists for legacy mode. - // See https://github.com/facebook/react/pull/19216. - didReceiveUpdate = true; - } else { - // An update was scheduled on this fiber, but there are no new props - // nor legacy context. Set this to false. If an update queue or context - // consumer produces a changed value, it will set this to true. Otherwise, - // the component will assume the children have not changed and bail out. - didReceiveUpdate = false; - } - } - } else { - didReceiveUpdate = false; - } // Before entering the begin phase, clear pending update priority. - // TODO: This assumes that we're about to evaluate the component and process - // the update queue. However, there's an exception: SimpleMemoComponent - // sometimes bails out later in the begin phase. This indicates that we should - // move this assignment out of the common path and into each branch. - - workInProgress.lanes = NoLanes; - - switch (workInProgress.tag) { - case LazyComponent: { - var elementType = workInProgress.elementType; - return mountLazyComponent( - current, - workInProgress, - elementType, - renderLanes - ); - } - - case FunctionComponent: { - var Component = workInProgress.type; - var unresolvedProps = workInProgress.pendingProps; - var resolvedProps = - disableDefaultPropsExceptForClasses || - workInProgress.elementType === Component - ? unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - Component, - unresolvedProps - ); - return updateFunctionComponent( - current, - workInProgress, - Component, - resolvedProps, - renderLanes - ); - } - - case ClassComponent: { - var _Component = workInProgress.type; - var _unresolvedProps = workInProgress.pendingProps; - - var _resolvedProps4 = resolveClassComponentProps( - _Component, - _unresolvedProps, - workInProgress.elementType === _Component - ); - - return updateClassComponent( - current, - workInProgress, - _Component, - _resolvedProps4, - renderLanes - ); - } - - case HostRoot: - return updateHostRoot(current, workInProgress, renderLanes); - - case HostHoistable: - - // Fall through - - case HostSingleton: - - // Fall through - - case HostComponent: - return updateHostComponent$1(current, workInProgress, renderLanes); - - case HostText: - return updateHostText$1(); - - case SuspenseComponent: - return updateSuspenseComponent(current, workInProgress, renderLanes); - - case HostPortal: - return updatePortalComponent(current, workInProgress, renderLanes); - - case ForwardRef: { - var type = workInProgress.type; - var _unresolvedProps2 = workInProgress.pendingProps; - - var _resolvedProps5 = - disableDefaultPropsExceptForClasses || - workInProgress.elementType === type - ? _unresolvedProps2 - : resolveDefaultPropsOnNonClassComponent(type, _unresolvedProps2); + if (parentSuspense === null) { + throw new Error('We just came from a parent so we must have had a parent. This is a bug in React.'); + } - return updateForwardRef( - current, - workInProgress, - type, - _resolvedProps5, - renderLanes - ); - } + parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes); + var _alternate = parentSuspense.alternate; - case Fragment: - return updateFragment(current, workInProgress, renderLanes); + if (_alternate !== null) { + _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes); + } // This is intentionally passing this fiber as the parent + // because we want to schedule this fiber as having work + // on its children. We'll use the childLanes on + // this fiber to indicate that a context has changed. - case Mode: - return updateMode(current, workInProgress, renderLanes); - case Profiler: - return updateProfiler(current, workInProgress, renderLanes); - - case ContextProvider: - return updateContextProvider(current, workInProgress, renderLanes); - - case ContextConsumer: - return updateContextConsumer(current, workInProgress, renderLanes); - - case MemoComponent: { - var _type = workInProgress.type; - var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props. - - var _resolvedProps6 = disableDefaultPropsExceptForClasses - ? _unresolvedProps3 - : resolveDefaultPropsOnNonClassComponent(_type, _unresolvedProps3); - - _resolvedProps6 = disableDefaultPropsExceptForClasses - ? _resolvedProps6 - : resolveDefaultPropsOnNonClassComponent( - _type.type, - _resolvedProps6 - ); - return updateMemoComponent( - current, - workInProgress, - _type, - _resolvedProps6, - renderLanes - ); - } - - case SimpleMemoComponent: { - return updateSimpleMemoComponent( - current, - workInProgress, - workInProgress.type, - workInProgress.pendingProps, - renderLanes - ); - } - - case IncompleteClassComponent: { - var _Component2 = workInProgress.type; - var _unresolvedProps4 = workInProgress.pendingProps; - - var _resolvedProps7 = resolveClassComponentProps( - _Component2, - _unresolvedProps4, - workInProgress.elementType === _Component2 - ); - - return mountIncompleteClassComponent( - current, - workInProgress, - _Component2, - _resolvedProps7, - renderLanes - ); - } - - case IncompleteFunctionComponent: { - var _Component3 = workInProgress.type; - var _unresolvedProps5 = workInProgress.pendingProps; - - var _resolvedProps8 = resolveClassComponentProps( - _Component3, - _unresolvedProps5, - workInProgress.elementType === _Component3 - ); - - return mountIncompleteFunctionComponent( - current, - workInProgress, - _Component3, - _resolvedProps8, - renderLanes - ); - } - - case SuspenseListComponent: { - return updateSuspenseListComponent( - current, - workInProgress, - renderLanes - ); - } - - case ScopeComponent: { - break; - } + scheduleContextWorkOnParentPath(parentSuspense, renderLanes, workInProgress); + nextFiber = fiber.sibling; + } else { + // Traverse down. + nextFiber = fiber.child; + } - case OffscreenComponent: { - return updateOffscreenComponent(current, workInProgress, renderLanes); - } + if (nextFiber !== null) { + // Set the return pointer of the child to the work-in-progress fiber. + nextFiber.return = fiber; + } else { + // No child. Traverse to next sibling. + nextFiber = fiber; - case LegacyHiddenComponent: { + while (nextFiber !== null) { + if (nextFiber === workInProgress) { + // We're back to the root of this subtree. Exit. + nextFiber = null; break; } - case CacheComponent: { - { - return updateCacheComponent(current, workInProgress, renderLanes); - } - } - } - - throw new Error( - "Unknown unit of work tag (" + - workInProgress.tag + - "). This error is likely caused by a bug in " + - "React. Please file an issue." - ); - } + var sibling = nextFiber.sibling; - var valueCursor = createCursor(null); - var rendererCursorDEV; + if (sibling !== null) { + // Set the return pointer of the sibling to the work-in-progress fiber. + sibling.return = nextFiber.return; + nextFiber = sibling; + break; + } // No more siblings. Traverse up. - { - rendererCursorDEV = createCursor(null); + + nextFiber = nextFiber.return; + } } - var rendererSigil; + fiber = nextFiber; + } +} +function prepareToReadContext(workInProgress, renderLanes) { + currentlyRenderingFiber = workInProgress; + lastContextDependency = null; + lastFullyObservedContext = null; + var dependencies = workInProgress.dependencies; + if (dependencies !== null) { { - // Use this to detect multiple renderers using the same context - rendererSigil = {}; - } + var firstContext = dependencies.firstContext; - var currentlyRenderingFiber = null; - var lastContextDependency = null; - var lastFullyObservedContext = null; - var isDisallowedContextReadInDEV = false; - function resetContextDependencies() { - // This is called right before React yields execution, to ensure `readContext` - // cannot be called outside the render phase. - currentlyRenderingFiber = null; - lastContextDependency = null; - lastFullyObservedContext = null; - - { - isDisallowedContextReadInDEV = false; - } - } - function enterDisallowedContextReadInDEV() { - { - isDisallowedContextReadInDEV = true; - } - } - function exitDisallowedContextReadInDEV() { - { - isDisallowedContextReadInDEV = false; - } - } - function pushProvider(providerFiber, context, nextValue) { - { - push(valueCursor, context._currentValue, providerFiber); - context._currentValue = nextValue; + if (firstContext !== null) { + if (includesSomeLane(dependencies.lanes, renderLanes)) { + // Context list has a pending update. Mark that this fiber performed work. + markWorkInProgressReceivedUpdate(); + } // Reset the work-in-progress list - { - push(rendererCursorDEV, context._currentRenderer, providerFiber); - - if ( - context._currentRenderer !== undefined && - context._currentRenderer !== null && - context._currentRenderer !== rendererSigil - ) { - error( - "Detected multiple renderers concurrently rendering the " + - "same context provider. This is currently unsupported." - ); - } - context._currentRenderer = rendererSigil; - } + dependencies.firstContext = null; } } - function popProvider(context, providerFiber) { - var currentValue = valueCursor.current; - - { - context._currentValue = currentValue; + } +} +function readContext(context) { + { + // This warning would fire if you read context inside a Hook like useMemo. + // Unlike the class check below, it's not enforced in production for perf. + if (isDisallowedContextReadInDEV) { + error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + } + } - { - var currentRenderer = rendererCursorDEV.current; - pop(rendererCursorDEV, providerFiber); - context._currentRenderer = currentRenderer; - } - } + return readContextForConsumer(currentlyRenderingFiber, context); +} +function readContextDuringReconciliation(consumer, context, renderLanes) { + if (currentlyRenderingFiber === null) { + prepareToReadContext(consumer, renderLanes); + } - pop(valueCursor, providerFiber); - } - function scheduleContextWorkOnParentPath( - parent, - renderLanes, - propagationRoot - ) { - // Update the child lanes of all the ancestors, including the alternates. - var node = parent; + return readContextForConsumer(consumer, context); +} - while (node !== null) { - var alternate = node.alternate; +function readContextForConsumer(consumer, context) { + var value = context._currentValue ; - if (!isSubsetOfLanes(node.childLanes, renderLanes)) { - node.childLanes = mergeLanes(node.childLanes, renderLanes); + if (lastFullyObservedContext === context) ; else { + var contextItem = { + context: context, + memoizedValue: value, + next: null + }; - if (alternate !== null) { - alternate.childLanes = mergeLanes( - alternate.childLanes, - renderLanes - ); - } - } else if ( - alternate !== null && - !isSubsetOfLanes(alternate.childLanes, renderLanes) - ) { - alternate.childLanes = mergeLanes(alternate.childLanes, renderLanes); - } else; - - if (node === propagationRoot) { - break; - } + if (lastContextDependency === null) { + if (consumer === null) { + throw new Error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().'); + } // This is the first dependency for this component. Create a new list. - node = node.return; - } - { - if (node !== propagationRoot) { - error( - "Expected to find the propagation root when scheduling context work. " + - "This error is likely caused by a bug in React. Please file an issue." - ); - } - } - } - function propagateContextChange(workInProgress, context, renderLanes) { - { - propagateContextChange_eager(workInProgress, context, renderLanes); - } + lastContextDependency = contextItem; + consumer.dependencies = { + lanes: NoLanes, + firstContext: contextItem + }; + } else { + // Append a new context item. + lastContextDependency = lastContextDependency.next = contextItem; } + } - function propagateContextChange_eager( - workInProgress, - context, - renderLanes - ) { - var fiber = workInProgress.child; + return value; +} - if (fiber !== null) { - // Set the return pointer of the child to the work-in-progress fiber. - fiber.return = workInProgress; - } +// replace it with a lightweight shim that only has the features we use. - while (fiber !== null) { - var nextFiber = void 0; // Visit this fiber. +var AbortControllerLocal = typeof AbortController !== 'undefined' ? AbortController : // $FlowFixMe[missing-this-annot] +// $FlowFixMe[prop-missing] +function AbortControllerShim() { + var listeners = []; + var signal = this.signal = { + aborted: false, + addEventListener: function (type, listener) { + listeners.push(listener); + } + }; - var list = fiber.dependencies; + this.abort = function () { + signal.aborted = true; + listeners.forEach(function (listener) { + return listener(); + }); + }; +} ; // Intentionally not named imports because Rollup would +// use dynamic dispatch for CommonJS interop named imports. + +var scheduleCallback$1 = Scheduler.unstable_scheduleCallback, + NormalPriority = Scheduler.unstable_NormalPriority; +var CacheContext = { + $$typeof: REACT_CONTEXT_TYPE, + // We don't use Consumer/Provider for Cache components. So we'll cheat. + Consumer: null, + Provider: null, + // We'll initialize these at the root. + _currentValue: null, + _currentValue2: null, + _threadCount: 0 +} ; + +{ + CacheContext._currentRenderer = null; + CacheContext._currentRenderer2 = null; +} // Creates a new empty Cache instance with a ref-count of 0. The caller is responsible +// for retaining the cache once it is in use (retainCache), and releasing the cache +// once it is no longer needed (releaseCache). + + +function createCache() { + + var cache = { + controller: new AbortControllerLocal(), + data: new Map(), + refCount: 0 + }; + return cache; +} +function retainCache(cache) { - if (list !== null) { - nextFiber = fiber.child; - var dependency = list.firstContext; + { + if (cache.controller.signal.aborted) { + warn('A cache instance was retained after it was already freed. ' + 'This likely indicates a bug in React.'); + } + } - while (dependency !== null) { - // Check if the context matches. - if (dependency.context === context) { - // Match! Schedule an update on this fiber. - if (fiber.tag === ClassComponent) { - // Schedule a force update on the work-in-progress. - var lane = pickArbitraryLane(renderLanes); - var update = createUpdate(lane); - update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the - // update to the current fiber, too, which means it will persist even if - // this render is thrown away. Since it's a race condition, not sure it's - // worth fixing. - // Inlined `enqueueUpdate` to remove interleaved update check + cache.refCount++; +} // Cleanup a cache instance, potentially freeing it if there are no more references - var updateQueue = fiber.updateQueue; +function releaseCache(cache) { - if (updateQueue === null); - else { - var sharedQueue = updateQueue.shared; - var pending = sharedQueue.pending; + cache.refCount--; - if (pending === null) { - // This is the first update. Create a circular list. - update.next = update; - } else { - update.next = pending.next; - pending.next = update; - } + { + if (cache.refCount < 0) { + warn('A cache instance was released after it was already freed. ' + 'This likely indicates a bug in React.'); + } + } - sharedQueue.pending = update; - } - } + if (cache.refCount === 0) { + scheduleCallback$1(NormalPriority, function () { + cache.controller.abort(); + }); + } +} +function pushCacheProvider(workInProgress, cache) { - fiber.lanes = mergeLanes(fiber.lanes, renderLanes); - var alternate = fiber.alternate; + pushProvider(workInProgress, CacheContext, cache); +} +function popCacheProvider(workInProgress, cache) { - if (alternate !== null) { - alternate.lanes = mergeLanes(alternate.lanes, renderLanes); - } + popProvider(CacheContext, workInProgress); +} - scheduleContextWorkOnParentPath( - fiber.return, - renderLanes, - workInProgress - ); // Mark the updated lanes on the list, too. +function requestCurrentTransition() { + var transition = ReactSharedInternals.T; - list.lanes = mergeLanes(list.lanes, renderLanes); // Since we already found a match, we can stop traversing the - // dependency list. + if (transition !== null) { + // Whenever a transition update is scheduled, register a callback on the + // transition object so we can get the return value of the scope function. + transition._callbacks.add(handleAsyncAction); + } - break; - } + return transition; +} - dependency = dependency.next; - } - } else if (fiber.tag === ContextProvider) { - // Don't scan deeper if this is a matching provider - nextFiber = fiber.type === workInProgress.type ? null : fiber.child; - } else if (fiber.tag === DehydratedFragment) { - // If a dehydrated suspense boundary is in this subtree, we don't know - // if it will have any context consumers in it. The best we can do is - // mark it as having updates. - var parentSuspense = fiber.return; - - if (parentSuspense === null) { - throw new Error( - "We just came from a parent so we must have had a parent. This is a bug in React." - ); - } +function handleAsyncAction(transition, thenable) { + if (enableAsyncActions) { + // This is an async action. + entangleAsyncAction(transition, thenable); + } +} - parentSuspense.lanes = mergeLanes(parentSuspense.lanes, renderLanes); - var _alternate = parentSuspense.alternate; - - if (_alternate !== null) { - _alternate.lanes = mergeLanes(_alternate.lanes, renderLanes); - } // This is intentionally passing this fiber as the parent - // because we want to schedule this fiber as having work - // on its children. We'll use the childLanes on - // this fiber to indicate that a context has changed. - - scheduleContextWorkOnParentPath( - parentSuspense, - renderLanes, - workInProgress - ); - nextFiber = fiber.sibling; - } else { - // Traverse down. - nextFiber = fiber.child; - } +function notifyTransitionCallbacks(transition, returnValue) { + var callbacks = transition._callbacks; + callbacks.forEach(function (callback) { + return callback(transition, returnValue); + }); +} // When retrying a Suspense/Offscreen boundary, we restore the cache that was +// used during the previous render by placing it here, on the stack. - if (nextFiber !== null) { - // Set the return pointer of the child to the work-in-progress fiber. - nextFiber.return = fiber; - } else { - // No child. Traverse to next sibling. - nextFiber = fiber; +var resumedCache = createCursor(null); // During the render/synchronous commit phase, we don't actually process the - while (nextFiber !== null) { - if (nextFiber === workInProgress) { - // We're back to the root of this subtree. Exit. - nextFiber = null; - break; - } +function peekCacheFromPool() { + // If we're rendering inside a Suspense boundary that is currently hidden, + // we should use the same cache that we used during the previous render, if + // one exists. - var sibling = nextFiber.sibling; - if (sibling !== null) { - // Set the return pointer of the sibling to the work-in-progress fiber. - sibling.return = nextFiber.return; - nextFiber = sibling; - break; - } // No more siblings. Traverse up. + var cacheResumedFromPreviousRender = resumedCache.current; - nextFiber = nextFiber.return; - } - } + if (cacheResumedFromPreviousRender !== null) { + return cacheResumedFromPreviousRender; + } // Otherwise, check the root's cache pool. - fiber = nextFiber; - } - } - function prepareToReadContext(workInProgress, renderLanes) { - currentlyRenderingFiber = workInProgress; - lastContextDependency = null; - lastFullyObservedContext = null; - var dependencies = workInProgress.dependencies; - if (dependencies !== null) { - { - var firstContext = dependencies.firstContext; + var root = getWorkInProgressRoot(); + var cacheFromRootCachePool = root.pooledCache; + return cacheFromRootCachePool; +} - if (firstContext !== null) { - if (includesSomeLane(dependencies.lanes, renderLanes)) { - // Context list has a pending update. Mark that this fiber performed work. - markWorkInProgressReceivedUpdate(); - } // Reset the work-in-progress list +function requestCacheFromPool(renderLanes) { + // Similar to previous function, except if there's not already a cache in the + // pool, we allocate a new one. + var cacheFromPool = peekCacheFromPool(); + + if (cacheFromPool !== null) { + return cacheFromPool; + } // Create a fresh cache and add it to the root cache pool. A cache can have + // multiple owners: + // - A cache pool that lives on the FiberRoot. This is where all fresh caches + // are originally created (TODO: except during refreshes, until we implement + // this correctly). The root takes ownership immediately when the cache is + // created. Conceptually, root.pooledCache is an Option> (owned), + // and the return value of this function is a &Arc (borrowed). + // - One of several fiber types: host root, cache boundary, suspense + // component. These retain and release in the commit phase. + + + var root = getWorkInProgressRoot(); + var freshCache = createCache(); + root.pooledCache = freshCache; + retainCache(freshCache); + + if (freshCache !== null) { + root.pooledCacheLanes |= renderLanes; + } + + return freshCache; +} +function pushTransition(offscreenWorkInProgress, prevCachePool, newTransitions) { + { + if (prevCachePool === null) { + push(resumedCache, resumedCache.current, offscreenWorkInProgress); + } else { + push(resumedCache, prevCachePool.pool, offscreenWorkInProgress); + } + } +} +function popTransition(workInProgress, current) { + if (current !== null) { - dependencies.firstContext = null; - } - } - } + { + pop(resumedCache, workInProgress); } - function readContext(context) { - { - // This warning would fire if you read context inside a Hook like useMemo. - // Unlike the class check below, it's not enforced in production for perf. - if (isDisallowedContextReadInDEV) { - error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - } - } + } +} +function getSuspendedCache() { + // cache that would have been used to render fresh data during this render, + // if there was any, so that we can resume rendering with the same cache when + // we receive more data. - return readContextForConsumer(currentlyRenderingFiber, context); - } - function readContextDuringReconciliation(consumer, context, renderLanes) { - if (currentlyRenderingFiber === null) { - prepareToReadContext(consumer, renderLanes); - } - return readContextForConsumer(consumer, context); - } + var cacheFromPool = peekCacheFromPool(); - function readContextForConsumer(consumer, context) { - var value = context._currentValue; + if (cacheFromPool === null) { + return null; + } - if (lastFullyObservedContext === context); - else { - var contextItem = { - context: context, - memoizedValue: value, - next: null - }; + return { + // We must also save the parent, so that when we resume we can detect + // a refresh. + parent: CacheContext._currentValue , + pool: cacheFromPool + }; +} +function getOffscreenDeferredCache() { - if (lastContextDependency === null) { - if (consumer === null) { - throw new Error( - "Context can only be read while React is rendering. " + - "In classes, you can read it in the render method or getDerivedStateFromProps. " + - "In function components, you can read it directly in the function body, but not " + - "inside Hooks like useReducer() or useMemo()." - ); - } // This is the first dependency for this component. Create a new list. + var cacheFromPool = peekCacheFromPool(); - lastContextDependency = contextItem; - consumer.dependencies = { - lanes: NoLanes, - firstContext: contextItem - }; - } else { - // Append a new context item. - lastContextDependency = lastContextDependency.next = contextItem; - } - } + if (cacheFromPool === null) { + return null; + } - return value; - } + return { + // We must also store the parent, so that when we resume we can detect + // a refresh. + parent: CacheContext._currentValue , + pool: cacheFromPool + }; +} - // replace it with a lightweight shim that only has the features we use. +/** + * Tag the fiber with an update effect. This turns a Placement into + * a PlacementAndUpdate. + */ - var AbortControllerLocal = - typeof AbortController !== "undefined" - ? AbortController // $FlowFixMe[missing-this-annot] - : // $FlowFixMe[prop-missing] - function AbortControllerShim() { - var listeners = []; - var signal = (this.signal = { - aborted: false, - addEventListener: function (type, listener) { - listeners.push(listener); - } - }); +function markUpdate(workInProgress) { + workInProgress.flags |= Update; +} - this.abort = function () { - signal.aborted = true; - listeners.forEach(function (listener) { - return listener(); - }); - }; - }; // Intentionally not named imports because Rollup would - // use dynamic dispatch for CommonJS interop named imports. - - var scheduleCallback$1 = Scheduler.unstable_scheduleCallback, - NormalPriority = Scheduler.unstable_NormalPriority; - var CacheContext = { - $$typeof: REACT_CONTEXT_TYPE, - // We don't use Consumer/Provider for Cache components. So we'll cheat. - Consumer: null, - Provider: null, - // We'll initialize these at the root. - _currentValue: null, - _currentValue2: null, - _threadCount: 0 - }; +function appendAllChildren(parent, workInProgress, needsVisibilityToggle, isHidden) { + { + // We only have the top Fiber that was created but we need recurse down its + // children to find all the terminal nodes. + var node = workInProgress.child; - { - CacheContext._currentRenderer = null; - CacheContext._currentRenderer2 = null; - } // Creates a new empty Cache instance with a ref-count of 0. The caller is responsible - // for retaining the cache once it is in use (retainCache), and releasing the cache - // once it is no longer needed (releaseCache). - - function createCache() { - var cache = { - controller: new AbortControllerLocal(), - data: new Map(), - refCount: 0 - }; - return cache; - } - function retainCache(cache) { - { - if (cache.controller.signal.aborted) { - warn( - "A cache instance was retained after it was already freed. " + - "This likely indicates a bug in React." - ); - } + while (node !== null) { + if (node.tag === HostComponent || node.tag === HostText) { + appendInitialChild(parent, node.stateNode); + } else if (node.tag === HostPortal || (false)) ; else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; } - cache.refCount++; - } // Cleanup a cache instance, potentially freeing it if there are no more references + if (node === workInProgress) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function releaseCache(cache) { - cache.refCount--; - { - if (cache.refCount < 0) { - warn( - "A cache instance was released after it was already freed. " + - "This likely indicates a bug in React." - ); + while (node.sibling === null) { + // $FlowFixMe[incompatible-use] found when upgrading Flow + if (node.return === null || node.return === workInProgress) { + return; } - } - if (cache.refCount === 0) { - scheduleCallback$1(NormalPriority, function () { - cache.controller.abort(); - }); - } - } - function pushCacheProvider(workInProgress, cache) { - pushProvider(workInProgress, CacheContext, cache); - } - function popCacheProvider(workInProgress, cache) { - popProvider(CacheContext, workInProgress); - } + node = node.return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - function requestCurrentTransition() { - var transition = ReactSharedInternals.T; - if (transition !== null) { - // Whenever a transition update is scheduled, register a callback on the - // transition object so we can get the return value of the scope function. - transition._callbacks.add(handleAsyncAction); - } + node.sibling.return = node.return; + node = node.sibling; + } + } +} // An unfortunate fork of appendAllChildren because we have two different parent types. + +function updateHostComponent(current, workInProgress, type, newProps, renderLanes) { + { + // If we have an alternate, that means this is an update and we need to + // schedule a side-effect to do the updates. + var oldProps = current.memoizedProps; + + if (oldProps === newProps) { + // In mutation mode, this is sufficient for a bailout because + // we won't touch this node even if children changed. + return; + } + + markUpdate(workInProgress); + } +} // This function must be called at the very end of the complete phase, because +// it might throw to suspend, and if the resource immediately loads, the work +// loop will resume rendering as if the work-in-progress completed. So it must +// fully complete. +// TODO: This should ideally move to begin phase, but currently the instance is +// not created until the complete phase. For our existing use cases, host nodes +// that suspend don't have children, so it doesn't matter. But that might not +// always be true in the future. + + +function preloadInstanceAndSuspendIfNeeded(workInProgress, type, props, renderLanes) { + { + // If this flag was set previously, we can remove it. The flag + // represents whether this particular set of props might ever need to + // suspend. The safest thing to do is for maySuspendCommit to always + // return true, but if the renderer is reasonably confident that the + // underlying resource won't be evicted, it can return false as a + // performance optimization. + workInProgress.flags &= ~MaySuspendCommit; + return; + } // Mark this fiber with a flag. This gets set on all host instances +} - return transition; - } +function scheduleRetryEffect(workInProgress, retryQueue) { + var wakeables = retryQueue; + + if (wakeables !== null) { + // Schedule an effect to attach a retry listener to the promise. + // TODO: Move to passive phase + workInProgress.flags |= Update; + } else { + // This boundary suspended, but no wakeables were added to the retry + // queue. Check if the renderer suspended commit. If so, this means + // that once the fallback is committed, we can immediately retry + // rendering again, because rendering wasn't actually blocked. Only + // the commit phase. + // TODO: Consider a model where we always schedule an immediate retry, even + // for normal Suspense. That way the retry can partially render up to the + // first thing that suspends. + if (workInProgress.flags & ScheduleRetry) { + var retryLane = // TODO: This check should probably be moved into claimNextRetryLane + // I also suspect that we need some further consolidation of offscreen + // and retry lanes. + workInProgress.tag !== OffscreenComponent ? claimNextRetryLane() : OffscreenLane; + workInProgress.lanes = mergeLanes(workInProgress.lanes, retryLane); + } + } +} - function handleAsyncAction(transition, thenable) { - if (enableAsyncActions) { - // This is an async action. - entangleAsyncAction(transition, thenable); - } +function updateHostText(current, workInProgress, oldText, newText) { + { + // If the text differs, mark it as an update. All the work in done in commitWork. + if (oldText !== newText) { + markUpdate(workInProgress); } + } +} - function notifyTransitionCallbacks(transition, returnValue) { - var callbacks = transition._callbacks; - callbacks.forEach(function (callback) { - return callback(transition, returnValue); - }); - } // When retrying a Suspense/Offscreen boundary, we restore the cache that was - // used during the previous render by placing it here, on the stack. - - var resumedCache = createCursor(null); // During the render/synchronous commit phase, we don't actually process the +function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) { - function peekCacheFromPool() { - // If we're rendering inside a Suspense boundary that is currently hidden, - // we should use the same cache that we used during the previous render, if - // one exists. + switch (renderState.tailMode) { + case 'hidden': + { + // Any insertions at the end of the tail list after this point + // should be invisible. If there are already mounted boundaries + // anything before them are not considered for collapsing. + // Therefore we need to go through the whole tail to find if + // there are any. + var tailNode = renderState.tail; + var lastTailNode = null; - var cacheResumedFromPreviousRender = resumedCache.current; + while (tailNode !== null) { + if (tailNode.alternate !== null) { + lastTailNode = tailNode; + } - if (cacheResumedFromPreviousRender !== null) { - return cacheResumedFromPreviousRender; - } // Otherwise, check the root's cache pool. + tailNode = tailNode.sibling; + } // Next we're simply going to delete all insertions after the + // last rendered item. - var root = getWorkInProgressRoot(); - var cacheFromRootCachePool = root.pooledCache; - return cacheFromRootCachePool; - } - - function requestCacheFromPool(renderLanes) { - // Similar to previous function, except if there's not already a cache in the - // pool, we allocate a new one. - var cacheFromPool = peekCacheFromPool(); - - if (cacheFromPool !== null) { - return cacheFromPool; - } // Create a fresh cache and add it to the root cache pool. A cache can have - // multiple owners: - // - A cache pool that lives on the FiberRoot. This is where all fresh caches - // are originally created (TODO: except during refreshes, until we implement - // this correctly). The root takes ownership immediately when the cache is - // created. Conceptually, root.pooledCache is an Option> (owned), - // and the return value of this function is a &Arc (borrowed). - // - One of several fiber types: host root, cache boundary, suspense - // component. These retain and release in the commit phase. - var root = getWorkInProgressRoot(); - var freshCache = createCache(); - root.pooledCache = freshCache; - retainCache(freshCache); + if (lastTailNode === null) { + // All remaining items in the tail are insertions. + renderState.tail = null; + } else { + // Detach the insertion after the last node that was already + // inserted. + lastTailNode.sibling = null; + } - if (freshCache !== null) { - root.pooledCacheLanes |= renderLanes; + break; } - return freshCache; - } - function pushTransition( - offscreenWorkInProgress, - prevCachePool, - newTransitions - ) { + case 'collapsed': { - if (prevCachePool === null) { - push(resumedCache, resumedCache.current, offscreenWorkInProgress); - } else { - push(resumedCache, prevCachePool.pool, offscreenWorkInProgress); - } - } - } - function popTransition(workInProgress, current) { - if (current !== null) { - { - pop(resumedCache, workInProgress); - } - } - } - function getSuspendedCache() { - // cache that would have been used to render fresh data during this render, - // if there was any, so that we can resume rendering with the same cache when - // we receive more data. + // Any insertions at the end of the tail list after this point + // should be invisible. If there are already mounted boundaries + // anything before them are not considered for collapsing. + // Therefore we need to go through the whole tail to find if + // there are any. + var _tailNode = renderState.tail; + var _lastTailNode = null; - var cacheFromPool = peekCacheFromPool(); + while (_tailNode !== null) { + if (_tailNode.alternate !== null) { + _lastTailNode = _tailNode; + } - if (cacheFromPool === null) { - return null; - } + _tailNode = _tailNode.sibling; + } // Next we're simply going to delete all insertions after the + // last rendered item. - return { - // We must also save the parent, so that when we resume we can detect - // a refresh. - parent: CacheContext._currentValue, - pool: cacheFromPool - }; - } - function getOffscreenDeferredCache() { - var cacheFromPool = peekCacheFromPool(); - if (cacheFromPool === null) { - return null; + if (_lastTailNode === null) { + // All remaining items in the tail are insertions. + if (!hasRenderedATailFallback && renderState.tail !== null) { + // We suspended during the head. We want to show at least one + // row at the tail. So we'll keep on and cut off the rest. + renderState.tail.sibling = null; + } else { + renderState.tail = null; + } + } else { + // Detach the insertion after the last node that was already + // inserted. + _lastTailNode.sibling = null; + } + + break; } + } +} - return { - // We must also store the parent, so that when we resume we can detect - // a refresh. - parent: CacheContext._currentValue, - pool: cacheFromPool - }; - } +function bubbleProperties(completedWork) { + var didBailout = completedWork.alternate !== null && completedWork.alternate.child === completedWork.child; + var newChildLanes = NoLanes; + var subtreeFlags = NoFlags$1; - /** - * Tag the fiber with an update effect. This turns a Placement into - * a PlacementAndUpdate. - */ + if (!didBailout) { + // Bubble up the earliest expiration time. + if ((completedWork.mode & ProfileMode) !== NoMode) { + // In profiling mode, resetChildExpirationTime is also used to reset + // profiler durations. + var actualDuration = completedWork.actualDuration; + var treeBaseDuration = completedWork.selfBaseDuration; + var child = completedWork.child; - function markUpdate(workInProgress) { - workInProgress.flags |= Update; - } + while (child !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(child.lanes, child.childLanes)); + subtreeFlags |= child.subtreeFlags; + subtreeFlags |= child.flags; // When a fiber is cloned, its actualDuration is reset to 0. This value will + // only be updated if work is done on the fiber (i.e. it doesn't bailout). + // When work is done, it should bubble to the parent's actualDuration. If + // the fiber has not been cloned though, (meaning no work was done), then + // this value will reflect the amount of time spent working on a previous + // render. In that case it should not bubble. We determine whether it was + // cloned by comparing the child pointer. + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - function appendAllChildren( - parent, - workInProgress, - needsVisibilityToggle, - isHidden - ) { - { - // We only have the top Fiber that was created but we need recurse down its - // children to find all the terminal nodes. - var node = workInProgress.child; - - while (node !== null) { - if (node.tag === HostComponent || node.tag === HostText) { - appendInitialChild(parent, node.stateNode); - } else if (node.tag === HostPortal || false); - else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } + actualDuration += child.actualDuration; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - if (node === workInProgress) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + treeBaseDuration += child.treeBaseDuration; + child = child.sibling; + } - while (node.sibling === null) { - // $FlowFixMe[incompatible-use] found when upgrading Flow - if (node.return === null || node.return === workInProgress) { - return; - } + completedWork.actualDuration = actualDuration; + completedWork.treeBaseDuration = treeBaseDuration; + } else { + var _child = completedWork.child; - node = node.return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + while (_child !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child.lanes, _child.childLanes)); + subtreeFlags |= _child.subtreeFlags; + subtreeFlags |= _child.flags; // Update the return pointer so the tree is consistent. This is a code + // smell because it assumes the commit phase is never concurrent with + // the render phase. Will address during refactor to alternate model. - node.sibling.return = node.return; - node = node.sibling; - } + _child.return = completedWork; + _child = _child.sibling; } - } // An unfortunate fork of appendAllChildren because we have two different parent types. + } - function updateHostComponent( - current, - workInProgress, - type, - newProps, - renderLanes - ) { - { - // If we have an alternate, that means this is an update and we need to - // schedule a side-effect to do the updates. - var oldProps = current.memoizedProps; + completedWork.subtreeFlags |= subtreeFlags; + } else { + // Bubble up the earliest expiration time. + if ((completedWork.mode & ProfileMode) !== NoMode) { + // In profiling mode, resetChildExpirationTime is also used to reset + // profiler durations. + var _treeBaseDuration = completedWork.selfBaseDuration; + var _child2 = completedWork.child; - if (oldProps === newProps) { - // In mutation mode, this is sufficient for a bailout because - // we won't touch this node even if children changed. - return; - } + while (_child2 !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child2.lanes, _child2.childLanes)); // "Static" flags share the lifetime of the fiber/hook they belong to, + // so we should bubble those up even during a bailout. All the other + // flags have a lifetime only of a single render + commit, so we should + // ignore them. + + subtreeFlags |= _child2.subtreeFlags & StaticMask; + subtreeFlags |= _child2.flags & StaticMask; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - markUpdate(workInProgress); + _treeBaseDuration += _child2.treeBaseDuration; + _child2 = _child2.sibling; } - } // This function must be called at the very end of the complete phase, because - // it might throw to suspend, and if the resource immediately loads, the work - // loop will resume rendering as if the work-in-progress completed. So it must - // fully complete. - // TODO: This should ideally move to begin phase, but currently the instance is - // not created until the complete phase. For our existing use cases, host nodes - // that suspend don't have children, so it doesn't matter. But that might not - // always be true in the future. - function preloadInstanceAndSuspendIfNeeded( - workInProgress, - type, - props, - renderLanes - ) { - { - // If this flag was set previously, we can remove it. The flag - // represents whether this particular set of props might ever need to - // suspend. The safest thing to do is for maySuspendCommit to always - // return true, but if the renderer is reasonably confident that the - // underlying resource won't be evicted, it can return false as a - // performance optimization. - workInProgress.flags &= ~MaySuspendCommit; - return; - } // Mark this fiber with a flag. This gets set on all host instances - } + completedWork.treeBaseDuration = _treeBaseDuration; + } else { + var _child3 = completedWork.child; - function scheduleRetryEffect(workInProgress, retryQueue) { - var wakeables = retryQueue; + while (_child3 !== null) { + newChildLanes = mergeLanes(newChildLanes, mergeLanes(_child3.lanes, _child3.childLanes)); // "Static" flags share the lifetime of the fiber/hook they belong to, + // so we should bubble those up even during a bailout. All the other + // flags have a lifetime only of a single render + commit, so we should + // ignore them. - if (wakeables !== null) { - // Schedule an effect to attach a retry listener to the promise. - // TODO: Move to passive phase - workInProgress.flags |= Update; - } else { - // This boundary suspended, but no wakeables were added to the retry - // queue. Check if the renderer suspended commit. If so, this means - // that once the fallback is committed, we can immediately retry - // rendering again, because rendering wasn't actually blocked. Only - // the commit phase. - // TODO: Consider a model where we always schedule an immediate retry, even - // for normal Suspense. That way the retry can partially render up to the - // first thing that suspends. - if (workInProgress.flags & ScheduleRetry) { - var retryLane = // TODO: This check should probably be moved into claimNextRetryLane - // I also suspect that we need some further consolidation of offscreen - // and retry lanes. - workInProgress.tag !== OffscreenComponent - ? claimNextRetryLane() - : OffscreenLane; - workInProgress.lanes = mergeLanes(workInProgress.lanes, retryLane); - } - } - } - - function updateHostText(current, workInProgress, oldText, newText) { - { - // If the text differs, mark it as an update. All the work in done in commitWork. - if (oldText !== newText) { - markUpdate(workInProgress); - } + subtreeFlags |= _child3.subtreeFlags & StaticMask; + subtreeFlags |= _child3.flags & StaticMask; // Update the return pointer so the tree is consistent. This is a code + // smell because it assumes the commit phase is never concurrent with + // the render phase. Will address during refactor to alternate model. + + _child3.return = completedWork; + _child3 = _child3.sibling; } } - function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) { - switch (renderState.tailMode) { - case "hidden": { - // Any insertions at the end of the tail list after this point - // should be invisible. If there are already mounted boundaries - // anything before them are not considered for collapsing. - // Therefore we need to go through the whole tail to find if - // there are any. - var tailNode = renderState.tail; - var lastTailNode = null; - - while (tailNode !== null) { - if (tailNode.alternate !== null) { - lastTailNode = tailNode; - } + completedWork.subtreeFlags |= subtreeFlags; + } - tailNode = tailNode.sibling; - } // Next we're simply going to delete all insertions after the - // last rendered item. + completedWork.childLanes = newChildLanes; + return didBailout; +} - if (lastTailNode === null) { - // All remaining items in the tail are insertions. - renderState.tail = null; - } else { - // Detach the insertion after the last node that was already - // inserted. - lastTailNode.sibling = null; - } +function completeDehydratedSuspenseBoundary(current, workInProgress, nextState) { + var wasHydrated = popHydrationState(); - break; - } + if (nextState !== null && nextState.dehydrated !== null) { + // We might be inside a hydration state the first time we're picking up this + // Suspense boundary, and also after we've reentered it for further hydration. + if (current === null) { + if (!wasHydrated) { + throw new Error('A dehydrated suspense component was completed without a hydrated node. ' + 'This is probably a bug in React.'); + } - case "collapsed": { - // Any insertions at the end of the tail list after this point - // should be invisible. If there are already mounted boundaries - // anything before them are not considered for collapsing. - // Therefore we need to go through the whole tail to find if - // there are any. - var _tailNode = renderState.tail; - var _lastTailNode = null; + prepareToHydrateHostSuspenseInstance(); + bubbleProperties(workInProgress); - while (_tailNode !== null) { - if (_tailNode.alternate !== null) { - _lastTailNode = _tailNode; - } + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + var isTimedOutSuspense = nextState !== null; - _tailNode = _tailNode.sibling; - } // Next we're simply going to delete all insertions after the - // last rendered item. + if (isTimedOutSuspense) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var primaryChildFragment = workInProgress.child; - if (_lastTailNode === null) { - // All remaining items in the tail are insertions. - if (!hasRenderedATailFallback && renderState.tail !== null) { - // We suspended during the head. We want to show at least one - // row at the tail. So we'll keep on and cut off the rest. - renderState.tail.sibling = null; - } else { - renderState.tail = null; + if (primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; } - } else { - // Detach the insertion after the last node that was already - // inserted. - _lastTailNode.sibling = null; } - - break; } } - } - - function bubbleProperties(completedWork) { - var didBailout = - completedWork.alternate !== null && - completedWork.alternate.child === completedWork.child; - var newChildLanes = NoLanes; - var subtreeFlags = NoFlags$1; - if (!didBailout) { - // Bubble up the earliest expiration time. - if ((completedWork.mode & ProfileMode) !== NoMode) { - // In profiling mode, resetChildExpirationTime is also used to reset - // profiler durations. - var actualDuration = completedWork.actualDuration; - var treeBaseDuration = completedWork.selfBaseDuration; - var child = completedWork.child; + return false; + } else { + emitPendingHydrationWarnings(); // We might have reentered this boundary to hydrate it. If so, we need to reset the hydration - while (child !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(child.lanes, child.childLanes) - ); - subtreeFlags |= child.subtreeFlags; - subtreeFlags |= child.flags; // When a fiber is cloned, its actualDuration is reset to 0. This value will - // only be updated if work is done on the fiber (i.e. it doesn't bailout). - // When work is done, it should bubble to the parent's actualDuration. If - // the fiber has not been cloned though, (meaning no work was done), then - // this value will reflect the amount of time spent working on a previous - // render. In that case it should not bubble. We determine whether it was - // cloned by comparing the child pointer. - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - actualDuration += child.actualDuration; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - treeBaseDuration += child.treeBaseDuration; - child = child.sibling; - } + if ((workInProgress.flags & DidCapture) === NoFlags$1) { + // This boundary did not suspend so it's now hydrated and unsuspended. + workInProgress.memoizedState = null; + } // If nothing suspended, we need to schedule an effect to mark this boundary + // as having hydrated so events know that they're free to be invoked. + // It's also a signal to replay events and the suspense callback. + // If something suspended, schedule an effect to attach retry listeners. + // So we might as well always mark this. - completedWork.actualDuration = actualDuration; - completedWork.treeBaseDuration = treeBaseDuration; - } else { - var _child = completedWork.child; - while (_child !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child.lanes, _child.childLanes) - ); - subtreeFlags |= _child.subtreeFlags; - subtreeFlags |= _child.flags; // Update the return pointer so the tree is consistent. This is a code - // smell because it assumes the commit phase is never concurrent with - // the render phase. Will address during refactor to alternate model. + workInProgress.flags |= Update; + bubbleProperties(workInProgress); - _child.return = completedWork; - _child = _child.sibling; - } - } + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + var _isTimedOutSuspense = nextState !== null; - completedWork.subtreeFlags |= subtreeFlags; - } else { - // Bubble up the earliest expiration time. - if ((completedWork.mode & ProfileMode) !== NoMode) { - // In profiling mode, resetChildExpirationTime is also used to reset - // profiler durations. - var _treeBaseDuration = completedWork.selfBaseDuration; - var _child2 = completedWork.child; - - while (_child2 !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child2.lanes, _child2.childLanes) - ); // "Static" flags share the lifetime of the fiber/hook they belong to, - // so we should bubble those up even during a bailout. All the other - // flags have a lifetime only of a single render + commit, so we should - // ignore them. - - subtreeFlags |= _child2.subtreeFlags & StaticMask; - subtreeFlags |= _child2.flags & StaticMask; // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - - _treeBaseDuration += _child2.treeBaseDuration; - _child2 = _child2.sibling; - } + if (_isTimedOutSuspense) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var _primaryChildFragment = workInProgress.child; - completedWork.treeBaseDuration = _treeBaseDuration; - } else { - var _child3 = completedWork.child; - - while (_child3 !== null) { - newChildLanes = mergeLanes( - newChildLanes, - mergeLanes(_child3.lanes, _child3.childLanes) - ); // "Static" flags share the lifetime of the fiber/hook they belong to, - // so we should bubble those up even during a bailout. All the other - // flags have a lifetime only of a single render + commit, so we should - // ignore them. - - subtreeFlags |= _child3.subtreeFlags & StaticMask; - subtreeFlags |= _child3.flags & StaticMask; // Update the return pointer so the tree is consistent. This is a code - // smell because it assumes the commit phase is never concurrent with - // the render phase. Will address during refactor to alternate model. - - _child3.return = completedWork; - _child3 = _child3.sibling; + if (_primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= _primaryChildFragment.treeBaseDuration; + } } } - - completedWork.subtreeFlags |= subtreeFlags; } - completedWork.childLanes = newChildLanes; - return didBailout; + return false; } + } else { + // Successfully completed this tree. If this was a forced client render, + // there may have been recoverable errors during first hydration + // attempt. If so, add them to a queue so we can log them in the + // commit phase. + upgradeHydrationErrorsToRecoverable(); // Fall through to normal Suspense path - function completeDehydratedSuspenseBoundary( - current, - workInProgress, - nextState - ) { - var wasHydrated = popHydrationState(); + return true; + } +} - if (nextState !== null && nextState.dehydrated !== null) { - // We might be inside a hydration state the first time we're picking up this - // Suspense boundary, and also after we've reentered it for further hydration. - if (current === null) { - if (!wasHydrated) { - throw new Error( - "A dehydrated suspense component was completed without a hydrated node. " + - "This is probably a bug in React." - ); - } +function completeWork(current, workInProgress, renderLanes) { + var newProps = workInProgress.pendingProps; // Note: This intentionally doesn't check if we're hydrating because comparing + + switch (workInProgress.tag) { + case IncompleteFunctionComponent: + + case LazyComponent: + case SimpleMemoComponent: + case FunctionComponent: + case ForwardRef: + case Fragment: + case Mode: + case Profiler: + case ContextConsumer: + case MemoComponent: + bubbleProperties(workInProgress); + return null; - prepareToHydrateHostSuspenseInstance(); - bubbleProperties(workInProgress); + case ClassComponent: + { + var Component = workInProgress.type; - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - var isTimedOutSuspense = nextState !== null; + if (isContextProvider(Component)) { + popContext(workInProgress); + } - if (isTimedOutSuspense) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var primaryChildFragment = workInProgress.child; + bubbleProperties(workInProgress); + return null; + } - if (primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - primaryChildFragment.treeBaseDuration; - } - } - } + case HostRoot: + { + var fiberRoot = workInProgress.stateNode; + + { + var previousCache = null; + + if (current !== null) { + previousCache = current.memoizedState.cache; + } + + var cache = workInProgress.memoizedState.cache; + + if (cache !== previousCache) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; } - return false; - } else { - emitPendingHydrationWarnings(); // We might have reentered this boundary to hydrate it. If so, we need to reset the hydration + popCacheProvider(workInProgress); + } + popHostContainer(workInProgress); + popTopLevelContextObject(workInProgress); - if ((workInProgress.flags & DidCapture) === NoFlags$1) { - // This boundary did not suspend so it's now hydrated and unsuspended. - workInProgress.memoizedState = null; - } // If nothing suspended, we need to schedule an effect to mark this boundary - // as having hydrated so events know that they're free to be invoked. - // It's also a signal to replay events and the suspense callback. - // If something suspended, schedule an effect to attach retry listeners. - // So we might as well always mark this. + if (fiberRoot.pendingContext) { + fiberRoot.context = fiberRoot.pendingContext; + fiberRoot.pendingContext = null; + } - workInProgress.flags |= Update; - bubbleProperties(workInProgress); + if (current === null || current.child === null) { + // If we hydrated, pop so that we can delete any remaining children + // that weren't hydrated. + var wasHydrated = popHydrationState(); - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - var _isTimedOutSuspense = nextState !== null; + if (wasHydrated) { + emitPendingHydrationWarnings(); // If we hydrated, then we'll need to schedule an update for + // the commit side-effects on the root. - if (_isTimedOutSuspense) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var _primaryChildFragment = workInProgress.child; + markUpdate(workInProgress); + } else { + if (current !== null) { + var prevState = current.memoizedState; - if (_primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - _primaryChildFragment.treeBaseDuration; - } + if ( // Check if this is a client root + !prevState.isDehydrated || // Check if we reverted to client rendering (e.g. due to an error) + (workInProgress.flags & ForceClientRender) !== NoFlags$1) { + // Schedule an effect to clear this container at the start of the + // next commit. This handles the case of React rendering into a + // container with previous children. It's also safe to do for + // updates too, because current.child would only be null if the + // previous render was null (so the container would already + // be empty). + workInProgress.flags |= Snapshot; // If this was a forced client render, there may have been + // recoverable errors during first hydration attempt. If so, add + // them to a queue so we can log them in the commit phase. + + upgradeHydrationErrorsToRecoverable(); } } } - - return false; } - } else { - // Successfully completed this tree. If this was a forced client render, - // there may have been recoverable errors during first hydration - // attempt. If so, add them to a queue so we can log them in the - // commit phase. - upgradeHydrationErrorsToRecoverable(); // Fall through to normal Suspense path + bubbleProperties(workInProgress); - return true; + return null; } - } - - function completeWork(current, workInProgress, renderLanes) { - var newProps = workInProgress.pendingProps; // Note: This intentionally doesn't check if we're hydrating because comparing - switch (workInProgress.tag) { - case IncompleteFunctionComponent: - - case LazyComponent: - case SimpleMemoComponent: - case FunctionComponent: - case ForwardRef: - case Fragment: - case Mode: - case Profiler: - case ContextConsumer: - case MemoComponent: - bubbleProperties(workInProgress); - return null; + case HostHoistable: - case ClassComponent: { - var Component = workInProgress.type; + case HostSingleton: - if (isContextProvider(Component)) { - popContext(workInProgress); - } + case HostComponent: + { + popHostContext(workInProgress); + var _type2 = workInProgress.type; - bubbleProperties(workInProgress); - return null; - } + if (current !== null && workInProgress.stateNode != null) { + updateHostComponent(current, workInProgress, _type2, newProps); + } else { + if (!newProps) { + if (workInProgress.stateNode === null) { + throw new Error('We must have new props for new mounts. This error is likely ' + 'caused by a bug in React. Please file an issue.'); + } // This can happen when we abort work. - case HostRoot: { - var fiberRoot = workInProgress.stateNode; - { - var previousCache = null; + bubbleProperties(workInProgress); + return null; + } - if (current !== null) { - previousCache = current.memoizedState.cache; - } + var _currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context + // "stack" as the parent. Then append children as we go in beginWork + // or completeWork depending on whether we want to add them top->down or + // bottom->up. Top->down is faster in IE11. - var cache = workInProgress.memoizedState.cache; - if (cache !== previousCache) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } + var _wasHydrated2 = popHydrationState(); - popCacheProvider(workInProgress); - } - popHostContainer(workInProgress); - popTopLevelContextObject(workInProgress); + if (_wasHydrated2) { + // TODO: Move this and createInstance step into the beginPhase + // to consolidate. + prepareToHydrateHostInstance(); + } else { + var _rootContainerInstance = getRootHostContainer(); - if (fiberRoot.pendingContext) { - fiberRoot.context = fiberRoot.pendingContext; - fiberRoot.pendingContext = null; - } + var _instance3 = createInstance(_type2, newProps, _rootContainerInstance, _currentHostContext, workInProgress); // TODO: For persistent renderers, we should pass children as part + // of the initial instance creation - if (current === null || current.child === null) { - // If we hydrated, pop so that we can delete any remaining children - // that weren't hydrated. - var wasHydrated = popHydrationState(); - if (wasHydrated) { - emitPendingHydrationWarnings(); // If we hydrated, then we'll need to schedule an update for - // the commit side-effects on the root. + appendAllChildren(_instance3, workInProgress); + workInProgress.stateNode = _instance3; // Certain renderers require commit-time effects for initial mount. + // (eg DOM renderer supports auto-focus for certain elements). + // Make sure such renderers get scheduled for later work. + if (finalizeInitialChildren(_instance3)) { markUpdate(workInProgress); - } else { - if (current !== null) { - var prevState = current.memoizedState; - - if ( - // Check if this is a client root - !prevState.isDehydrated || // Check if we reverted to client rendering (e.g. due to an error) - (workInProgress.flags & ForceClientRender) !== NoFlags$1 - ) { - // Schedule an effect to clear this container at the start of the - // next commit. This handles the case of React rendering into a - // container with previous children. It's also safe to do for - // updates too, because current.child would only be null if the - // previous render was null (so the container would already - // be empty). - workInProgress.flags |= Snapshot; // If this was a forced client render, there may have been - // recoverable errors during first hydration attempt. If so, add - // them to a queue so we can log them in the commit phase. - - upgradeHydrationErrorsToRecoverable(); - } - } } } - bubbleProperties(workInProgress); - - return null; } - case HostHoistable: - - case HostSingleton: + bubbleProperties(workInProgress); // This must come at the very end of the complete phase, because it might + // throw to suspend, and if the resource immediately loads, the work loop + // will resume rendering as if the work-in-progress completed. So it must + // fully complete. - case HostComponent: { - popHostContext(workInProgress); - var _type2 = workInProgress.type; + preloadInstanceAndSuspendIfNeeded(workInProgress); + return null; + } - if (current !== null && workInProgress.stateNode != null) { - updateHostComponent(current, workInProgress, _type2, newProps); - } else { - if (!newProps) { - if (workInProgress.stateNode === null) { - throw new Error( - "We must have new props for new mounts. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } // This can happen when we abort work. - - bubbleProperties(workInProgress); - return null; - } + case HostText: + { + var newText = newProps; - var _currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context - // "stack" as the parent. Then append children as we go in beginWork - // or completeWork depending on whether we want to add them top->down or - // bottom->up. Top->down is faster in IE11. + if (current && workInProgress.stateNode != null) { + var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need + // to schedule a side-effect to do the updates. - var _wasHydrated2 = popHydrationState(); + updateHostText(current, workInProgress, oldText, newText); + } else { + if (typeof newText !== 'string') { + if (workInProgress.stateNode === null) { + throw new Error('We must have new props for new mounts. This error is likely ' + 'caused by a bug in React. Please file an issue.'); + } // This can happen when we abort work. - if (_wasHydrated2) { - // TODO: Move this and createInstance step into the beginPhase - // to consolidate. - prepareToHydrateHostInstance(); - } else { - var _rootContainerInstance = getRootHostContainer(); - - var _instance3 = createInstance( - _type2, - newProps, - _rootContainerInstance, - _currentHostContext, - workInProgress - ); // TODO: For persistent renderers, we should pass children as part - // of the initial instance creation - - appendAllChildren(_instance3, workInProgress); - workInProgress.stateNode = _instance3; // Certain renderers require commit-time effects for initial mount. - // (eg DOM renderer supports auto-focus for certain elements). - // Make sure such renderers get scheduled for later work. - - if (finalizeInitialChildren(_instance3)) { - markUpdate(workInProgress); - } - } } - bubbleProperties(workInProgress); // This must come at the very end of the complete phase, because it might - // throw to suspend, and if the resource immediately loads, the work loop - // will resume rendering as if the work-in-progress completed. So it must - // fully complete. - - preloadInstanceAndSuspendIfNeeded(workInProgress); - return null; - } + var _rootContainerInstance2 = getRootHostContainer(); - case HostText: { - var newText = newProps; + var _currentHostContext2 = getHostContext(); - if (current && workInProgress.stateNode != null) { - var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need - // to schedule a side-effect to do the updates. + var _wasHydrated3 = popHydrationState(); - updateHostText(current, workInProgress, oldText, newText); + if (_wasHydrated3) { + prepareToHydrateHostTextInstance(); } else { - if (typeof newText !== "string") { - if (workInProgress.stateNode === null) { - throw new Error( - "We must have new props for new mounts. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } // This can happen when we abort work. - } + workInProgress.stateNode = createTextInstance(newText, _rootContainerInstance2, _currentHostContext2, workInProgress); + } + } - var _rootContainerInstance2 = getRootHostContainer(); + bubbleProperties(workInProgress); + return null; + } + + case SuspenseComponent: + { + var nextState = workInProgress.memoizedState; // Special path for dehydrated boundaries. We may eventually move this + // to its own fiber type so that we can add other kinds of hydration + // boundaries that aren't associated with a Suspense tree. In anticipation + // of such a refactor, all the hydration logic is contained in + // this branch. - var _currentHostContext2 = getHostContext(); + if (current === null || current.memoizedState !== null && current.memoizedState.dehydrated !== null) { + var fallthroughToNormalSuspensePath = completeDehydratedSuspenseBoundary(current, workInProgress, nextState); - var _wasHydrated3 = popHydrationState(); + if (!fallthroughToNormalSuspensePath) { + if (workInProgress.flags & ForceClientRender) { + popSuspenseHandler(workInProgress); // Special case. There were remaining unhydrated nodes. We treat + // this as a mismatch. Revert to client rendering. - if (_wasHydrated3) { - prepareToHydrateHostTextInstance(); + return workInProgress; } else { - workInProgress.stateNode = createTextInstance( - newText, - _rootContainerInstance2, - _currentHostContext2, - workInProgress - ); + popSuspenseHandler(workInProgress); // Did not finish hydrating, either because this is the initial + // render or because something suspended. + + return null; } - } + } // Continue with the normal Suspense path. - bubbleProperties(workInProgress); - return null; } - case SuspenseComponent: { - var nextState = workInProgress.memoizedState; // Special path for dehydrated boundaries. We may eventually move this - // to its own fiber type so that we can add other kinds of hydration - // boundaries that aren't associated with a Suspense tree. In anticipation - // of such a refactor, all the hydration logic is contained in - // this branch. - - if ( - current === null || - (current.memoizedState !== null && - current.memoizedState.dehydrated !== null) - ) { - var fallthroughToNormalSuspensePath = - completeDehydratedSuspenseBoundary( - current, - workInProgress, - nextState - ); - - if (!fallthroughToNormalSuspensePath) { - if (workInProgress.flags & ForceClientRender) { - popSuspenseHandler(workInProgress); // Special case. There were remaining unhydrated nodes. We treat - // this as a mismatch. Revert to client rendering. - - return workInProgress; - } else { - popSuspenseHandler(workInProgress); // Did not finish hydrating, either because this is the initial - // render or because something suspended. - - return null; - } - } // Continue with the normal Suspense path. - } - - popSuspenseHandler(workInProgress); - - if ((workInProgress.flags & DidCapture) !== NoFlags$1) { - // Something suspended. Re-render with the fallback children. - workInProgress.lanes = renderLanes; // Do not reset the effect list. - - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } // Don't bubble properties in this case. + popSuspenseHandler(workInProgress); - return workInProgress; - } + if ((workInProgress.flags & DidCapture) !== NoFlags$1) { + // Something suspended. Re-render with the fallback children. + workInProgress.lanes = renderLanes; // Do not reset the effect list. - var nextDidTimeout = nextState !== null; - var prevDidTimeout = - current !== null && current.memoizedState !== null; + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); + } // Don't bubble properties in this case. - if (nextDidTimeout) { - var offscreenFiber = workInProgress.child; - var _previousCache = null; - - if ( - offscreenFiber.alternate !== null && - offscreenFiber.alternate.memoizedState !== null && - offscreenFiber.alternate.memoizedState.cachePool !== null - ) { - _previousCache = - offscreenFiber.alternate.memoizedState.cachePool.pool; - } - var _cache = null; + return workInProgress; + } - if ( - offscreenFiber.memoizedState !== null && - offscreenFiber.memoizedState.cachePool !== null - ) { - _cache = offscreenFiber.memoizedState.cachePool.pool; - } + var nextDidTimeout = nextState !== null; + var prevDidTimeout = current !== null && current.memoizedState !== null; - if (_cache !== _previousCache) { - // Run passive effects to retain/release the cache. - offscreenFiber.flags |= Passive$1; - } - } // If the suspended state of the boundary changes, we need to schedule - // a passive effect, which is when we process the transitions - - if (nextDidTimeout !== prevDidTimeout) { - // an effect to toggle the subtree's visibility. When we switch from - // fallback -> primary, the inner Offscreen fiber schedules this effect - // as part of its normal complete phase. But when we switch from - // primary -> fallback, the inner Offscreen fiber does not have a complete - // phase. So we need to schedule its effect here. - // - // We also use this flag to connect/disconnect the effects, but the same - // logic applies: when re-connecting, the Offscreen fiber's complete - // phase will handle scheduling the effect. It's only when the fallback - // is active that we have to do anything special. + if (nextDidTimeout) { + var offscreenFiber = workInProgress.child; + var _previousCache = null; - if (nextDidTimeout) { - var _offscreenFiber2 = workInProgress.child; - _offscreenFiber2.flags |= Visibility; - } + if (offscreenFiber.alternate !== null && offscreenFiber.alternate.memoizedState !== null && offscreenFiber.alternate.memoizedState.cachePool !== null) { + _previousCache = offscreenFiber.alternate.memoizedState.cachePool.pool; } - var retryQueue = workInProgress.updateQueue; - scheduleRetryEffect(workInProgress, retryQueue); - - bubbleProperties(workInProgress); + var _cache = null; - { - if ((workInProgress.mode & ProfileMode) !== NoMode) { - if (nextDidTimeout) { - // Don't count time spent in a timed out Suspense subtree as part of the base duration. - var primaryChildFragment = workInProgress.child; - - if (primaryChildFragment !== null) { - // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator - workInProgress.treeBaseDuration -= - primaryChildFragment.treeBaseDuration; - } - } - } + if (offscreenFiber.memoizedState !== null && offscreenFiber.memoizedState.cachePool !== null) { + _cache = offscreenFiber.memoizedState.cachePool.pool; } - return null; - } + if (_cache !== _previousCache) { + // Run passive effects to retain/release the cache. + offscreenFiber.flags |= Passive$1; + } + } // If the suspended state of the boundary changes, we need to schedule + // a passive effect, which is when we process the transitions - case HostPortal: - popHostContainer(workInProgress); - bubbleProperties(workInProgress); - return null; + if (nextDidTimeout !== prevDidTimeout) { + // an effect to toggle the subtree's visibility. When we switch from + // fallback -> primary, the inner Offscreen fiber schedules this effect + // as part of its normal complete phase. But when we switch from + // primary -> fallback, the inner Offscreen fiber does not have a complete + // phase. So we need to schedule its effect here. + // + // We also use this flag to connect/disconnect the effects, but the same + // logic applies: when re-connecting, the Offscreen fiber's complete + // phase will handle scheduling the effect. It's only when the fallback + // is active that we have to do anything special. - case ContextProvider: - // Pop provider fiber - var context; - if (enableRenderableContext) { - context = workInProgress.type; - } else { - context = workInProgress.type._context; + if (nextDidTimeout) { + var _offscreenFiber2 = workInProgress.child; + _offscreenFiber2.flags |= Visibility; } + } - popProvider(context, workInProgress); - bubbleProperties(workInProgress); - return null; + var retryQueue = workInProgress.updateQueue; + scheduleRetryEffect(workInProgress, retryQueue); - case IncompleteClassComponent: { - // sequential to ensure this switch is compiled to a jump table. + bubbleProperties(workInProgress); - var _Component = workInProgress.type; + { + if ((workInProgress.mode & ProfileMode) !== NoMode) { + if (nextDidTimeout) { + // Don't count time spent in a timed out Suspense subtree as part of the base duration. + var primaryChildFragment = workInProgress.child; - if (isContextProvider(_Component)) { - popContext(workInProgress); + if (primaryChildFragment !== null) { + // $FlowFixMe[unsafe-arithmetic] Flow doesn't support type casting in combination with the -= operator + workInProgress.treeBaseDuration -= primaryChildFragment.treeBaseDuration; + } + } } - - bubbleProperties(workInProgress); - return null; } - case SuspenseListComponent: { - popSuspenseListContext(workInProgress); - var renderState = workInProgress.memoizedState; + return null; + } - if (renderState === null) { - // We're running in the default, "independent" mode. - // We don't do anything in this mode. - bubbleProperties(workInProgress); - return null; - } + case HostPortal: + popHostContainer(workInProgress); - var didSuspendAlready = - (workInProgress.flags & DidCapture) !== NoFlags$1; - var renderedTail = renderState.rendering; - - if (renderedTail === null) { - // We just rendered the head. - if (!didSuspendAlready) { - // This is the first pass. We need to figure out if anything is still - // suspended in the rendered set. - // If new content unsuspended, but there's still some content that - // didn't. Then we need to do a second pass that forces everything - // to keep showing their fallbacks. - // We might be suspended if something in this render pass suspended, or - // something in the previous committed pass suspended. Otherwise, - // there's no chance so we can skip the expensive call to - // findFirstSuspended. - var cannotBeSuspended = - renderHasNotSuspendedYet() && - (current === null || - (current.flags & DidCapture) === NoFlags$1); - - if (!cannotBeSuspended) { - var row = workInProgress.child; - - while (row !== null) { - var suspended = findFirstSuspended(row); - - if (suspended !== null) { - didSuspendAlready = true; - workInProgress.flags |= DidCapture; - cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as - // part of the second pass. In that case nothing will subscribe to - // its thenables. Instead, we'll transfer its thenables to the - // SuspenseList so that it can retry if they resolve. - // There might be multiple of these in the list but since we're - // going to wait for all of them anyway, it doesn't really matter - // which ones gets to ping. In theory we could get clever and keep - // track of how many dependencies remain but it gets tricky because - // in the meantime, we can add/remove/change items and dependencies. - // We might bail out of the loop before finding any but that - // doesn't matter since that means that the other boundaries that - // we did find already has their listeners attached. - - var _retryQueue = suspended.updateQueue; - workInProgress.updateQueue = _retryQueue; - scheduleRetryEffect(workInProgress, _retryQueue); // Rerender the whole list, but this time, we'll force fallbacks - // to stay in place. - // Reset the effect flags before doing the second pass since that's now invalid. - // Reset the child fibers to their original state. - - workInProgress.subtreeFlags = NoFlags$1; - resetChildFibers(workInProgress, renderLanes); // Set up the Suspense List Context to force suspense and - // immediately rerender the children. - - pushSuspenseListContext( - workInProgress, - setShallowSuspenseListContext( - suspenseStackCursor.current, - ForceSuspenseFallback - ) - ); // Don't bubble properties in this case. - - return workInProgress.child; - } + bubbleProperties(workInProgress); + return null; - row = row.sibling; - } - } + case ContextProvider: + // Pop provider fiber + var context; - if ( - renderState.tail !== null && - now$1() > getRenderTargetTime() - ) { - // We have already passed our CPU deadline but we still have rows - // left in the tail. We'll just give up further attempts to render - // the main content and only render fallbacks. - workInProgress.flags |= DidCapture; - didSuspendAlready = true; - cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this - // to get it started back up to attempt the next item. While in terms - // of priority this work has the same priority as this current render, - // it's not part of the same transition once the transition has - // committed. If it's sync, we still want to yield so that it can be - // painted. Conceptually, this is really the same as pinging. - // We can use any RetryLane even if it's the one currently rendering - // since we're leaving it behind on this node. - - workInProgress.lanes = SomeRetryLane; - } - } else { - cutOffTailIfNeeded(renderState, false); - } // Next we're going to render the tail. - } else { - // Append the rendered row to the child list. - if (!didSuspendAlready) { - var _suspended = findFirstSuspended(renderedTail); - - if (_suspended !== null) { - workInProgress.flags |= DidCapture; - didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't - // get lost if this row ends up dropped during a second pass. - - var _retryQueue2 = _suspended.updateQueue; - workInProgress.updateQueue = _retryQueue2; - scheduleRetryEffect(workInProgress, _retryQueue2); - cutOffTailIfNeeded(renderState, true); // This might have been modified. - - if ( - renderState.tail === null && - renderState.tailMode === "hidden" && - !renderedTail.alternate && - !getIsHydrating() // We don't cut it if we're hydrating. - ) { - // We're done. - bubbleProperties(workInProgress); - return null; - } - } else if ( - // The time it took to render last row is greater than the remaining - // time we have to render. So rendering one more row would likely - // exceed it. - now$1() * 2 - renderState.renderingStartTime > - getRenderTargetTime() && - renderLanes !== OffscreenLane - ) { - // We have now passed our CPU deadline and we'll just give up further - // attempts to render the main content and only render fallbacks. - // The assumption is that this is usually faster. - workInProgress.flags |= DidCapture; - didSuspendAlready = true; - cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this - // to get it started back up to attempt the next item. While in terms - // of priority this work has the same priority as this current render, - // it's not part of the same transition once the transition has - // committed. If it's sync, we still want to yield so that it can be - // painted. Conceptually, this is really the same as pinging. - // We can use any RetryLane even if it's the one currently rendering - // since we're leaving it behind on this node. - - workInProgress.lanes = SomeRetryLane; - } - } + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; + } - if (renderState.isBackwards) { - // The effect list of the backwards tail will have been added - // to the end. This breaks the guarantee that life-cycles fire in - // sibling order but that isn't a strong guarantee promised by React. - // Especially since these might also just pop in during future commits. - // Append to the beginning of the list. - renderedTail.sibling = workInProgress.child; - workInProgress.child = renderedTail; - } else { - var previousSibling = renderState.last; + popProvider(context, workInProgress); + bubbleProperties(workInProgress); + return null; - if (previousSibling !== null) { - previousSibling.sibling = renderedTail; - } else { - workInProgress.child = renderedTail; - } + case IncompleteClassComponent: + { + // sequential to ensure this switch is compiled to a jump table. - renderState.last = renderedTail; - } - } - if (renderState.tail !== null) { - // We still have tail rows to render. - // Pop a row. - var next = renderState.tail; - renderState.rendering = next; - renderState.tail = next.sibling; - renderState.renderingStartTime = now$1(); - next.sibling = null; // Restore the context. - // TODO: We can probably just avoid popping it instead and only - // setting it the first time we go from not suspended to suspended. - - var suspenseContext = suspenseStackCursor.current; - - if (didSuspendAlready) { - suspenseContext = setShallowSuspenseListContext( - suspenseContext, - ForceSuspenseFallback - ); - } else { - suspenseContext = - setDefaultShallowSuspenseListContext(suspenseContext); - } + var _Component = workInProgress.type; - pushSuspenseListContext(workInProgress, suspenseContext); // Do a pass over the next row. - // Don't bubble properties in this case. + if (isContextProvider(_Component)) { + popContext(workInProgress); + } - return next; - } + bubbleProperties(workInProgress); + return null; + } + + case SuspenseListComponent: + { + popSuspenseListContext(workInProgress); + var renderState = workInProgress.memoizedState; + if (renderState === null) { + // We're running in the default, "independent" mode. + // We don't do anything in this mode. bubbleProperties(workInProgress); return null; } - case ScopeComponent: { - break; - } - - case OffscreenComponent: - case LegacyHiddenComponent: { - popSuspenseHandler(workInProgress); - popHiddenContext(workInProgress); - var _nextState = workInProgress.memoizedState; - var nextIsHidden = _nextState !== null; // Schedule a Visibility effect if the visibility has changed - - { - if (current !== null) { - var _prevState = current.memoizedState; - var prevIsHidden = _prevState !== null; + var didSuspendAlready = (workInProgress.flags & DidCapture) !== NoFlags$1; + var renderedTail = renderState.rendering; + + if (renderedTail === null) { + // We just rendered the head. + if (!didSuspendAlready) { + // This is the first pass. We need to figure out if anything is still + // suspended in the rendered set. + // If new content unsuspended, but there's still some content that + // didn't. Then we need to do a second pass that forces everything + // to keep showing their fallbacks. + // We might be suspended if something in this render pass suspended, or + // something in the previous committed pass suspended. Otherwise, + // there's no chance so we can skip the expensive call to + // findFirstSuspended. + var cannotBeSuspended = renderHasNotSuspendedYet() && (current === null || (current.flags & DidCapture) === NoFlags$1); + + if (!cannotBeSuspended) { + var row = workInProgress.child; + + while (row !== null) { + var suspended = findFirstSuspended(row); + + if (suspended !== null) { + didSuspendAlready = true; + workInProgress.flags |= DidCapture; + cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as + // part of the second pass. In that case nothing will subscribe to + // its thenables. Instead, we'll transfer its thenables to the + // SuspenseList so that it can retry if they resolve. + // There might be multiple of these in the list but since we're + // going to wait for all of them anyway, it doesn't really matter + // which ones gets to ping. In theory we could get clever and keep + // track of how many dependencies remain but it gets tricky because + // in the meantime, we can add/remove/change items and dependencies. + // We might bail out of the loop before finding any but that + // doesn't matter since that means that the other boundaries that + // we did find already has their listeners attached. + + var _retryQueue = suspended.updateQueue; + workInProgress.updateQueue = _retryQueue; + scheduleRetryEffect(workInProgress, _retryQueue); // Rerender the whole list, but this time, we'll force fallbacks + // to stay in place. + // Reset the effect flags before doing the second pass since that's now invalid. + // Reset the child fibers to their original state. + + workInProgress.subtreeFlags = NoFlags$1; + resetChildFibers(workInProgress, renderLanes); // Set up the Suspense List Context to force suspense and + // immediately rerender the children. + + pushSuspenseListContext(workInProgress, setShallowSuspenseListContext(suspenseStackCursor.current, ForceSuspenseFallback)); // Don't bubble properties in this case. + + return workInProgress.child; + } - if (prevIsHidden !== nextIsHidden) { - workInProgress.flags |= Visibility; - } - } else { - // On initial mount, we only need a Visibility effect if the tree - // is hidden. - if (nextIsHidden) { - workInProgress.flags |= Visibility; + row = row.sibling; } } - } - if ( - !nextIsHidden || - (workInProgress.mode & ConcurrentMode) === NoMode - ) { - bubbleProperties(workInProgress); - } else { - // Don't bubble properties for hidden children unless we're rendering - // at offscreen priority. - if ( - includesSomeLane(renderLanes, OffscreenLane) && // Also don't bubble if the tree suspended - (workInProgress.flags & DidCapture) === NoLanes - ) { - bubbleProperties(workInProgress); // Check if there was an insertion or update in the hidden subtree. - // If so, we need to hide those nodes in the commit phase, so - // schedule a visibility effect. - - if (workInProgress.subtreeFlags & (Placement | Update)) { - workInProgress.flags |= Visibility; - } + if (renderState.tail !== null && now$1() > getRenderTargetTime()) { + // We have already passed our CPU deadline but we still have rows + // left in the tail. We'll just give up further attempts to render + // the main content and only render fallbacks. + workInProgress.flags |= DidCapture; + didSuspendAlready = true; + cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this + // to get it started back up to attempt the next item. While in terms + // of priority this work has the same priority as this current render, + // it's not part of the same transition once the transition has + // committed. If it's sync, we still want to yield so that it can be + // painted. Conceptually, this is really the same as pinging. + // We can use any RetryLane even if it's the one currently rendering + // since we're leaving it behind on this node. + + workInProgress.lanes = SomeRetryLane; } - } + } else { + cutOffTailIfNeeded(renderState, false); + } // Next we're going to render the tail. + + } else { + // Append the rendered row to the child list. + if (!didSuspendAlready) { + var _suspended = findFirstSuspended(renderedTail); - var offscreenQueue = workInProgress.updateQueue; + if (_suspended !== null) { + workInProgress.flags |= DidCapture; + didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't + // get lost if this row ends up dropped during a second pass. - if (offscreenQueue !== null) { - var _retryQueue3 = offscreenQueue.retryQueue; - scheduleRetryEffect(workInProgress, _retryQueue3); - } + var _retryQueue2 = _suspended.updateQueue; + workInProgress.updateQueue = _retryQueue2; + scheduleRetryEffect(workInProgress, _retryQueue2); + cutOffTailIfNeeded(renderState, true); // This might have been modified. - { - var _previousCache2 = null; - - if ( - current !== null && - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - _previousCache2 = current.memoizedState.cachePool.pool; + if (renderState.tail === null && renderState.tailMode === 'hidden' && !renderedTail.alternate && !getIsHydrating() // We don't cut it if we're hydrating. + ) { + // We're done. + bubbleProperties(workInProgress); + return null; + } + } else if ( // The time it took to render last row is greater than the remaining + // time we have to render. So rendering one more row would likely + // exceed it. + now$1() * 2 - renderState.renderingStartTime > getRenderTargetTime() && renderLanes !== OffscreenLane) { + // We have now passed our CPU deadline and we'll just give up further + // attempts to render the main content and only render fallbacks. + // The assumption is that this is usually faster. + workInProgress.flags |= DidCapture; + didSuspendAlready = true; + cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this + // to get it started back up to attempt the next item. While in terms + // of priority this work has the same priority as this current render, + // it's not part of the same transition once the transition has + // committed. If it's sync, we still want to yield so that it can be + // painted. Conceptually, this is really the same as pinging. + // We can use any RetryLane even if it's the one currently rendering + // since we're leaving it behind on this node. + + workInProgress.lanes = SomeRetryLane; } + } - var _cache2 = null; + if (renderState.isBackwards) { + // The effect list of the backwards tail will have been added + // to the end. This breaks the guarantee that life-cycles fire in + // sibling order but that isn't a strong guarantee promised by React. + // Especially since these might also just pop in during future commits. + // Append to the beginning of the list. + renderedTail.sibling = workInProgress.child; + workInProgress.child = renderedTail; + } else { + var previousSibling = renderState.last; - if ( - workInProgress.memoizedState !== null && - workInProgress.memoizedState.cachePool !== null - ) { - _cache2 = workInProgress.memoizedState.cachePool.pool; + if (previousSibling !== null) { + previousSibling.sibling = renderedTail; + } else { + workInProgress.child = renderedTail; } - if (_cache2 !== _previousCache2) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } + renderState.last = renderedTail; } - - popTransition(workInProgress, current); - return null; } - case CacheComponent: { - { - var _previousCache3 = null; - - if (current !== null) { - _previousCache3 = current.memoizedState.cache; - } + if (renderState.tail !== null) { + // We still have tail rows to render. + // Pop a row. + var next = renderState.tail; + renderState.rendering = next; + renderState.tail = next.sibling; + renderState.renderingStartTime = now$1(); + next.sibling = null; // Restore the context. + // TODO: We can probably just avoid popping it instead and only + // setting it the first time we go from not suspended to suspended. - var _cache3 = workInProgress.memoizedState.cache; + var suspenseContext = suspenseStackCursor.current; - if (_cache3 !== _previousCache3) { - // Run passive effects to retain/release the cache. - workInProgress.flags |= Passive$1; - } - - popCacheProvider(workInProgress); - bubbleProperties(workInProgress); + if (didSuspendAlready) { + suspenseContext = setShallowSuspenseListContext(suspenseContext, ForceSuspenseFallback); + } else { + suspenseContext = setDefaultShallowSuspenseListContext(suspenseContext); } - return null; - } + pushSuspenseListContext(workInProgress, suspenseContext); // Do a pass over the next row. + // Don't bubble properties in this case. - case TracingMarkerComponent: { - return null; + return next; } - } - throw new Error( - "Unknown unit of work tag (" + - workInProgress.tag + - "). This error is likely caused by a bug in " + - "React. Please file an issue." - ); - } + bubbleProperties(workInProgress); + return null; + } - function unwindWork(current, workInProgress, renderLanes) { - switch (workInProgress.tag) { - case ClassComponent: { - var Component = workInProgress.type; + case ScopeComponent: + { - if (isContextProvider(Component)) { - popContext(workInProgress); - } + break; + } - var flags = workInProgress.flags; + case OffscreenComponent: + case LegacyHiddenComponent: + { + popSuspenseHandler(workInProgress); + popHiddenContext(workInProgress); + var _nextState = workInProgress.memoizedState; + var nextIsHidden = _nextState !== null; // Schedule a Visibility effect if the visibility has changed - if (flags & ShouldCapture) { - workInProgress.flags = (flags & ~ShouldCapture) | DidCapture; + { + if (current !== null) { + var _prevState = current.memoizedState; + var prevIsHidden = _prevState !== null; - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); + if (prevIsHidden !== nextIsHidden) { + workInProgress.flags |= Visibility; + } + } else { + // On initial mount, we only need a Visibility effect if the tree + // is hidden. + if (nextIsHidden) { + workInProgress.flags |= Visibility; } - - return workInProgress; } - - return null; } - case HostRoot: { - { - popCacheProvider(workInProgress); + if (!nextIsHidden || (workInProgress.mode & ConcurrentMode) === NoMode) { + bubbleProperties(workInProgress); + } else { + // Don't bubble properties for hidden children unless we're rendering + // at offscreen priority. + if (includesSomeLane(renderLanes, OffscreenLane) && // Also don't bubble if the tree suspended + (workInProgress.flags & DidCapture) === NoLanes) { + bubbleProperties(workInProgress); // Check if there was an insertion or update in the hidden subtree. + // If so, we need to hide those nodes in the commit phase, so + // schedule a visibility effect. + + if (workInProgress.subtreeFlags & (Placement | Update)) { + workInProgress.flags |= Visibility; + } } - popHostContainer(workInProgress); - popTopLevelContextObject(workInProgress); - var _flags = workInProgress.flags; - - if ( - (_flags & ShouldCapture) !== NoFlags$1 && - (_flags & DidCapture) === NoFlags$1 - ) { - // There was an error during render that wasn't captured by a suspense - // boundary. Do a second pass on the root to unmount the children. - workInProgress.flags = (_flags & ~ShouldCapture) | DidCapture; - return workInProgress; - } // We unwound to the root without completing it. Exit. - - return null; } - case HostHoistable: - case HostSingleton: - case HostComponent: { - // TODO: popHydrationState - popHostContext(workInProgress); - return null; + var offscreenQueue = workInProgress.updateQueue; + + if (offscreenQueue !== null) { + var _retryQueue3 = offscreenQueue.retryQueue; + scheduleRetryEffect(workInProgress, _retryQueue3); } - case SuspenseComponent: { - popSuspenseHandler(workInProgress); - var suspenseState = workInProgress.memoizedState; + { + var _previousCache2 = null; - if (suspenseState !== null && suspenseState.dehydrated !== null) { - if (workInProgress.alternate === null) { - throw new Error( - "Threw in newly mounted dehydrated component. This is likely a bug in " + - "React. Please file an issue." - ); - } + if (current !== null && current.memoizedState !== null && current.memoizedState.cachePool !== null) { + _previousCache2 = current.memoizedState.cachePool.pool; } - var _flags2 = workInProgress.flags; - - if (_flags2 & ShouldCapture) { - workInProgress.flags = (_flags2 & ~ShouldCapture) | DidCapture; // Captured a suspense effect. Re-render the boundary. - - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } + var _cache2 = null; - return workInProgress; + if (workInProgress.memoizedState !== null && workInProgress.memoizedState.cachePool !== null) { + _cache2 = workInProgress.memoizedState.cachePool.pool; } - return null; + if (_cache2 !== _previousCache2) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; + } } - case SuspenseListComponent: { - popSuspenseListContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been - // caught by a nested boundary. If not, it should bubble through. + popTransition(workInProgress, current); + return null; + } - return null; - } + case CacheComponent: + { + { + var _previousCache3 = null; - case HostPortal: - popHostContainer(workInProgress); - return null; + if (current !== null) { + _previousCache3 = current.memoizedState.cache; + } - case ContextProvider: - var context; + var _cache3 = workInProgress.memoizedState.cache; - if (enableRenderableContext) { - context = workInProgress.type; - } else { - context = workInProgress.type._context; + if (_cache3 !== _previousCache3) { + // Run passive effects to retain/release the cache. + workInProgress.flags |= Passive$1; } - popProvider(context, workInProgress); - return null; - - case OffscreenComponent: - case LegacyHiddenComponent: { - popSuspenseHandler(workInProgress); - popHiddenContext(workInProgress); - popTransition(workInProgress, current); - var _flags3 = workInProgress.flags; + popCacheProvider(workInProgress); + bubbleProperties(workInProgress); + } - if (_flags3 & ShouldCapture) { - workInProgress.flags = (_flags3 & ~ShouldCapture) | DidCapture; // Captured a suspense effect. Re-render the boundary. + return null; + } - if ((workInProgress.mode & ProfileMode) !== NoMode) { - transferActualDuration(workInProgress); - } + case TracingMarkerComponent: + { - return workInProgress; - } + return null; + } + } - return null; - } + throw new Error("Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in " + 'React. Please file an issue.'); +} - case CacheComponent: - { - popCacheProvider(workInProgress); - } +function unwindWork(current, workInProgress, renderLanes) { - return null; + switch (workInProgress.tag) { + case ClassComponent: + { + var Component = workInProgress.type; - case TracingMarkerComponent: - return null; + if (isContextProvider(Component)) { + popContext(workInProgress); + } - default: - return null; - } - } + var flags = workInProgress.flags; - function unwindInterruptedWork(current, interruptedWork, renderLanes) { - switch (interruptedWork.tag) { - case ClassComponent: { - var childContextTypes = interruptedWork.type.childContextTypes; + if (flags & ShouldCapture) { + workInProgress.flags = flags & ~ShouldCapture | DidCapture; - if (childContextTypes !== null && childContextTypes !== undefined) { - popContext(interruptedWork); + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - break; + return workInProgress; } - case HostRoot: { - { - popCacheProvider(interruptedWork); - } - popHostContainer(interruptedWork); - popTopLevelContextObject(interruptedWork); - break; - } + return null; + } - case HostHoistable: - case HostSingleton: - case HostComponent: { - popHostContext(interruptedWork); - break; + case HostRoot: + { + + { + popCacheProvider(workInProgress); } + popHostContainer(workInProgress); + popTopLevelContextObject(workInProgress); + var _flags = workInProgress.flags; - case HostPortal: - popHostContainer(interruptedWork); - break; + if ((_flags & ShouldCapture) !== NoFlags$1 && (_flags & DidCapture) === NoFlags$1) { + // There was an error during render that wasn't captured by a suspense + // boundary. Do a second pass on the root to unmount the children. + workInProgress.flags = _flags & ~ShouldCapture | DidCapture; + return workInProgress; + } // We unwound to the root without completing it. Exit. - case SuspenseComponent: - popSuspenseHandler(interruptedWork); - break; - case SuspenseListComponent: - popSuspenseListContext(interruptedWork); - break; + return null; + } + + case HostHoistable: + case HostSingleton: + case HostComponent: + { + // TODO: popHydrationState + popHostContext(workInProgress); + return null; + } - case ContextProvider: - var context; + case SuspenseComponent: + { + popSuspenseHandler(workInProgress); + var suspenseState = workInProgress.memoizedState; - if (enableRenderableContext) { - context = interruptedWork.type; - } else { - context = interruptedWork.type._context; + if (suspenseState !== null && suspenseState.dehydrated !== null) { + if (workInProgress.alternate === null) { + throw new Error('Threw in newly mounted dehydrated component. This is likely a bug in ' + 'React. Please file an issue.'); } + } - popProvider(context, interruptedWork); - break; + var _flags2 = workInProgress.flags; - case OffscreenComponent: - case LegacyHiddenComponent: - popSuspenseHandler(interruptedWork); - popHiddenContext(interruptedWork); - popTransition(interruptedWork, current); - break; + if (_flags2 & ShouldCapture) { + workInProgress.flags = _flags2 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary. - case CacheComponent: - { - popCacheProvider(interruptedWork); + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - break; + return workInProgress; + } + + return null; } - } - var didWarnAboutUndefinedSnapshotBeforeUpdate = null; + case SuspenseListComponent: + { + popSuspenseListContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been + // caught by a nested boundary. If not, it should bubble through. - { - didWarnAboutUndefinedSnapshotBeforeUpdate = new Set(); - } // Used during the commit phase to track the state of the Offscreen component stack. - // Allows us to avoid traversing the return path to find the nearest Offscreen ancestor. - - var offscreenSubtreeIsHidden = false; - var offscreenSubtreeWasHidden = false; // Used to track if a form needs to be reset at the end of the mutation phase. - var PossiblyWeakSet = typeof WeakSet === "function" ? WeakSet : Set; - var nextEffect = null; // Used for Profiling builds to track updaters. - - var inProgressLanes = null; - var inProgressRoot = null; - - function shouldProfile(current) { - return ( - (current.mode & ProfileMode) !== NoMode && - (getExecutionContext() & CommitContext) !== NoContext - ); - } - - function callComponentWillUnmountWithTimer(current, instance) { - instance.props = resolveClassComponentProps( - current.type, - current.memoizedProps, - current.elementType === current.type - ); - instance.state = current.memoizedState; - - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - instance.componentWillUnmount(); - } finally { - recordLayoutEffectDuration(current); - } - } else { - instance.componentWillUnmount(); + return null; } - } // Capture errors so they don't interrupt unmounting. - function safelyCallComponentWillUnmount( - current, - nearestMountedAncestor, - instance - ) { - try { - callComponentWillUnmountWithTimer(current, instance); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); - } - } // Capture errors so they don't interrupt mounting. + case HostPortal: + popHostContainer(workInProgress); + return null; - function safelyAttachRef(current, nearestMountedAncestor) { - try { - commitAttachRef(current); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + case ContextProvider: + var context; + + if (enableRenderableContext) { + context = workInProgress.type; + } else { + context = workInProgress.type._context; } - } - function safelyDetachRef(current, nearestMountedAncestor) { - var ref = current.ref; - var refCleanup = current.refCleanup; + popProvider(context, workInProgress); + return null; - if (ref !== null) { - if (typeof refCleanup === "function") { - try { - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - refCleanup(); - } finally { - recordLayoutEffectDuration(current); - } - } else { - refCleanup(); - } - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); - } finally { - // `refCleanup` has been called. Nullify all references to it to prevent double invocation. - current.refCleanup = null; - var finishedWork = current.alternate; + case OffscreenComponent: + case LegacyHiddenComponent: + { + popSuspenseHandler(workInProgress); + popHiddenContext(workInProgress); + popTransition(workInProgress, current); + var _flags3 = workInProgress.flags; - if (finishedWork != null) { - finishedWork.refCleanup = null; - } - } - } else if (typeof ref === "function") { - var retVal; + if (_flags3 & ShouldCapture) { + workInProgress.flags = _flags3 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary. - try { - if (shouldProfile(current)) { - try { - startLayoutEffectTimer(); - retVal = ref(null); - } finally { - recordLayoutEffectDuration(current); - } - } else { - retVal = ref(null); - } - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + if ((workInProgress.mode & ProfileMode) !== NoMode) { + transferActualDuration(workInProgress); } - { - if (typeof retVal === "function") { - error( - "Unexpected return value from a callback ref in %s. " + - "A callback ref should not return a function.", - getComponentNameFromFiber(current) - ); - } - } - } else { - // $FlowFixMe[incompatible-use] unable to narrow type to RefObject - ref.current = null; + return workInProgress; } + + return null; } - } - function safelyCallDestroy(current, nearestMountedAncestor, destroy) { - try { - destroy(); - } catch (error) { - captureCommitPhaseError(current, nearestMountedAncestor, error); + case CacheComponent: + { + popCacheProvider(workInProgress); } - } - var shouldFireAfterActiveInstanceBlur = false; - function commitBeforeMutationEffects(root, firstChild) { - nextEffect = firstChild; - commitBeforeMutationEffects_begin(); // We no longer need to track the active instance fiber - var shouldFire = shouldFireAfterActiveInstanceBlur; - shouldFireAfterActiveInstanceBlur = false; - return shouldFire; - } + return null; - function commitBeforeMutationEffects_begin() { - while (nextEffect !== null) { - var fiber = nextEffect; // This phase is only used for beforeActiveInstanceBlur. + case TracingMarkerComponent: - var child = fiber.child; + return null; - if ( - (fiber.subtreeFlags & BeforeMutationMask) !== NoFlags$1 && - child !== null - ) { - child.return = fiber; - nextEffect = child; - } else { - commitBeforeMutationEffects_complete(); + default: + return null; + } +} + +function unwindInterruptedWork(current, interruptedWork, renderLanes) { + + switch (interruptedWork.tag) { + case ClassComponent: + { + var childContextTypes = interruptedWork.type.childContextTypes; + + if (childContextTypes !== null && childContextTypes !== undefined) { + popContext(interruptedWork); } + + break; } - } - function commitBeforeMutationEffects_complete() { - while (nextEffect !== null) { - var fiber = nextEffect; - setCurrentFiber(fiber); + case HostRoot: + { - try { - commitBeforeMutationEffectsOnFiber(fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); + { + popCacheProvider(interruptedWork); } + popHostContainer(interruptedWork); + popTopLevelContextObject(interruptedWork); + break; + } - resetCurrentFiber(); - var sibling = fiber.sibling; + case HostHoistable: + case HostSingleton: + case HostComponent: + { + popHostContext(interruptedWork); + break; + } - if (sibling !== null) { - sibling.return = fiber.return; - nextEffect = sibling; - return; - } + case HostPortal: + popHostContainer(interruptedWork); + break; + + case SuspenseComponent: + popSuspenseHandler(interruptedWork); + break; - nextEffect = fiber.return; + case SuspenseListComponent: + popSuspenseListContext(interruptedWork); + break; + + case ContextProvider: + var context; + + if (enableRenderableContext) { + context = interruptedWork.type; + } else { + context = interruptedWork.type._context; } - } - function commitBeforeMutationEffectsOnFiber(finishedWork) { - var current = finishedWork.alternate; - var flags = finishedWork.flags; + popProvider(context, interruptedWork); + break; - if ((flags & Snapshot) !== NoFlags$1) { - setCurrentFiber(finishedWork); + case OffscreenComponent: + case LegacyHiddenComponent: + popSuspenseHandler(interruptedWork); + popHiddenContext(interruptedWork); + popTransition(interruptedWork, current); + break; + + case CacheComponent: + { + popCacheProvider(interruptedWork); } - switch (finishedWork.tag) { - case FunctionComponent: { - break; - } + break; + } +} - case ForwardRef: - case SimpleMemoComponent: { - break; - } +var didWarnAboutUndefinedSnapshotBeforeUpdate = null; - case ClassComponent: { - if ((flags & Snapshot) !== NoFlags$1) { - if (current !== null) { - var prevProps = current.memoizedProps; - var prevState = current.memoizedState; - var instance = finishedWork.stateNode; // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. +{ + didWarnAboutUndefinedSnapshotBeforeUpdate = new Set(); +} // Used during the commit phase to track the state of the Offscreen component stack. +// Allows us to avoid traversing the return path to find the nearest Offscreen ancestor. - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "getSnapshotBeforeUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "getSnapshotBeforeUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } - } - } +var offscreenSubtreeIsHidden = false; +var offscreenSubtreeWasHidden = false; // Used to track if a form needs to be reset at the end of the mutation phase. +var PossiblyWeakSet = typeof WeakSet === 'function' ? WeakSet : Set; +var nextEffect = null; // Used for Profiling builds to track updaters. - var snapshot = instance.getSnapshotBeforeUpdate( - resolveClassComponentProps( - finishedWork.type, - prevProps, - finishedWork.elementType === finishedWork.type - ), - prevState - ); +var inProgressLanes = null; +var inProgressRoot = null; - { - var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate; - - if ( - snapshot === undefined && - !didWarnSet.has(finishedWork.type) - ) { - didWarnSet.add(finishedWork.type); - - error( - "%s.getSnapshotBeforeUpdate(): A snapshot value (or null) " + - "must be returned. You have returned undefined.", - getComponentNameFromFiber(finishedWork) - ); - } - } +function shouldProfile(current) { + return (current.mode & ProfileMode) !== NoMode && (getExecutionContext() & CommitContext) !== NoContext; +} - instance.__reactInternalSnapshotBeforeUpdate = snapshot; - } - } +function callComponentWillUnmountWithTimer(current, instance) { + instance.props = resolveClassComponentProps(current.type, current.memoizedProps, current.elementType === current.type); + instance.state = current.memoizedState; + + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + instance.componentWillUnmount(); + } finally { + recordLayoutEffectDuration(current); + } + } else { + instance.componentWillUnmount(); + } +} // Capture errors so they don't interrupt unmounting. + + +function safelyCallComponentWillUnmount(current, nearestMountedAncestor, instance) { + try { + callComponentWillUnmountWithTimer(current, instance); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} // Capture errors so they don't interrupt mounting. + + +function safelyAttachRef(current, nearestMountedAncestor) { + try { + commitAttachRef(current); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} - break; - } +function safelyDetachRef(current, nearestMountedAncestor) { + var ref = current.ref; + var refCleanup = current.refCleanup; - case HostRoot: { - break; + if (ref !== null) { + if (typeof refCleanup === 'function') { + try { + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + refCleanup(); + } finally { + recordLayoutEffectDuration(current); + } + } else { + refCleanup(); } + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } finally { + // `refCleanup` has been called. Nullify all references to it to prevent double invocation. + current.refCleanup = null; + var finishedWork = current.alternate; - case HostComponent: - case HostHoistable: - case HostSingleton: - case HostText: - case HostPortal: - case IncompleteClassComponent: - // Nothing to do for these component types - break; + if (finishedWork != null) { + finishedWork.refCleanup = null; + } + } + } else if (typeof ref === 'function') { + var retVal; - default: { - if ((flags & Snapshot) !== NoFlags$1) { - throw new Error( - "This unit of work tag should not have side-effects. This error is " + - "likely caused by a bug in React. Please file an issue." - ); + try { + if (shouldProfile(current)) { + try { + startLayoutEffectTimer(); + retVal = ref(null); + } finally { + recordLayoutEffectDuration(current); } + } else { + retVal = ref(null); } + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); } - if ((flags & Snapshot) !== NoFlags$1) { - resetCurrentFiber(); + { + if (typeof retVal === 'function') { + error('Unexpected return value from a callback ref in %s. ' + 'A callback ref should not return a function.', getComponentNameFromFiber(current)); + } } + } else { + // $FlowFixMe[incompatible-use] unable to narrow type to RefObject + ref.current = null; } + } +} - function commitHookEffectListUnmount( - flags, - finishedWork, - nearestMountedAncestor - ) { - var updateQueue = finishedWork.updateQueue; - var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; - - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; - - do { - if ((effect.tag & flags) === flags) { - // Unmount - var inst = effect.inst; - var destroy = inst.destroy; +function safelyCallDestroy(current, nearestMountedAncestor, destroy) { + try { + destroy(); + } catch (error) { + captureCommitPhaseError(current, nearestMountedAncestor, error); + } +} +var shouldFireAfterActiveInstanceBlur = false; +function commitBeforeMutationEffects(root, firstChild) { + nextEffect = firstChild; + commitBeforeMutationEffects_begin(); // We no longer need to track the active instance fiber + + var shouldFire = shouldFireAfterActiveInstanceBlur; + shouldFireAfterActiveInstanceBlur = false; + return shouldFire; +} - if (destroy !== undefined) { - inst.destroy = undefined; +function commitBeforeMutationEffects_begin() { + while (nextEffect !== null) { + var fiber = nextEffect; // This phase is only used for beforeActiveInstanceBlur. - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectUnmountStarted(finishedWork); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectUnmountStarted(finishedWork); - } - } + var child = fiber.child; - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(true); - } - } + if ((fiber.subtreeFlags & BeforeMutationMask) !== NoFlags$1 && child !== null) { + child.return = fiber; + nextEffect = child; + } else { + commitBeforeMutationEffects_complete(); + } + } +} - safelyCallDestroy(finishedWork, nearestMountedAncestor, destroy); +function commitBeforeMutationEffects_complete() { + while (nextEffect !== null) { + var fiber = nextEffect; + setCurrentFiber(fiber); - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(false); - } - } + try { + commitBeforeMutationEffectsOnFiber(fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectUnmountStopped(); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectUnmountStopped(); - } - } - } - } + resetCurrentFiber(); + var sibling = fiber.sibling; - effect = effect.next; - } while (effect !== firstEffect); - } + if (sibling !== null) { + sibling.return = fiber.return; + nextEffect = sibling; + return; } - function commitHookEffectListMount(flags, finishedWork) { - var updateQueue = finishedWork.updateQueue; - var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; - - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; + nextEffect = fiber.return; + } +} - do { - if ((effect.tag & flags) === flags) { - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectMountStarted(finishedWork); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectMountStarted(finishedWork); - } - } // Mount +function commitBeforeMutationEffectsOnFiber(finishedWork) { + var current = finishedWork.alternate; + var flags = finishedWork.flags; - var create = effect.create; + if ((flags & Snapshot) !== NoFlags$1) { + setCurrentFiber(finishedWork); + } - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(true); - } - } + switch (finishedWork.tag) { + case FunctionComponent: + { - var inst = effect.inst; - var destroy = create(); - inst.destroy = destroy; + break; + } - { - if ((flags & Insertion) !== NoFlags) { - setIsRunningInsertionEffect(false); - } - } + case ForwardRef: + case SimpleMemoComponent: + { + break; + } - { - if ((flags & Passive) !== NoFlags) { - markComponentPassiveEffectMountStopped(); - } else if ((flags & Layout) !== NoFlags) { - markComponentLayoutEffectMountStopped(); - } - } + case ClassComponent: + { + if ((flags & Snapshot) !== NoFlags$1) { + if (current !== null) { + var prevProps = current.memoizedProps; + var prevState = current.memoizedState; + var instance = finishedWork.stateNode; // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. { - if (destroy !== undefined && typeof destroy !== "function") { - var hookName = void 0; - - if ((effect.tag & Layout) !== NoFlags$1) { - hookName = "useLayoutEffect"; - } else if ((effect.tag & Insertion) !== NoFlags$1) { - hookName = "useInsertionEffect"; - } else { - hookName = "useEffect"; + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - var addendum = void 0; - - if (destroy === null) { - addendum = - " You returned null. If your effect does not require clean " + - "up, return undefined (or nothing)."; - } else if (typeof destroy.then === "function") { - addendum = - "\n\nIt looks like you wrote " + - hookName + - "(async () => ...) or returned a Promise. " + - "Instead, write the async function inside your effect " + - "and call it immediately:\n\n" + - hookName + - "(() => {\n" + - " async function fetchData() {\n" + - " // You can await here\n" + - " const response = await MyAPI.getData(someId);\n" + - " // ...\n" + - " }\n" + - " fetchData();\n" + - "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + - "Learn more about data fetching with Hooks: https://react.dev/link/hooks-data-fetching"; - } else { - addendum = " You returned: " + destroy; + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - - error( - "%s must not return anything besides a function, " + - "which is used for clean-up.%s", - hookName, - addendum - ); } } - } - effect = effect.next; - } while (effect !== firstEffect); - } - } - - function commitPassiveEffectDurations(finishedRoot, finishedWork) { - if (getExecutionContext() & CommitContext) { - // Only Profilers with work in their subtree will have an Update effect scheduled. - if ((finishedWork.flags & Update) !== NoFlags$1) { - switch (finishedWork.tag) { - case Profiler: { - var passiveEffectDuration = - finishedWork.stateNode.passiveEffectDuration; - var _finishedWork$memoize = finishedWork.memoizedProps, - id = _finishedWork$memoize.id, - onPostCommit = _finishedWork$memoize.onPostCommit; // This value will still reflect the previous commit phase. - // It does not get reset until the start of the next commit phase. - - var commitTime = getCommitTime(); - var phase = finishedWork.alternate === null ? "mount" : "update"; + var snapshot = instance.getSnapshotBeforeUpdate(resolveClassComponentProps(finishedWork.type, prevProps, finishedWork.elementType === finishedWork.type), prevState); - { - if (isCurrentUpdateNested()) { - phase = "nested-update"; - } - } + { + var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate; - if (typeof onPostCommit === "function") { - onPostCommit(id, phase, passiveEffectDuration, commitTime); - } // Bubble times to the next nearest ancestor Profiler. - // After we process that Profiler, we'll bubble further up. - - var parentFiber = finishedWork.return; - - outer: while (parentFiber !== null) { - switch (parentFiber.tag) { - case HostRoot: - var root = parentFiber.stateNode; - root.passiveEffectDuration += passiveEffectDuration; - break outer; - - case Profiler: - var parentStateNode = parentFiber.stateNode; - parentStateNode.passiveEffectDuration += - passiveEffectDuration; - break outer; - } + if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) { + didWarnSet.add(finishedWork.type); - parentFiber = parentFiber.return; + error('%s.getSnapshotBeforeUpdate(): A snapshot value (or null) ' + 'must be returned. You have returned undefined.', getComponentNameFromFiber(finishedWork)); } - - break; } + + instance.__reactInternalSnapshotBeforeUpdate = snapshot; } } + + break; } - } - function commitHookLayoutEffects(finishedWork, hookFlags) { - // At this point layout effects have already been destroyed (during mutation phase). - // This is done to prevent sibling component effects from interfering with each other, - // e.g. a destroy function in one component should never override a ref set - // by a create function in another component during the same commit. - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + case HostRoot: + { + + break; + } + + case HostComponent: + case HostHoistable: + case HostSingleton: + case HostText: + case HostPortal: + case IncompleteClassComponent: + // Nothing to do for these component types + break; - recordLayoutEffectDuration(finishedWork); - } else { - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + default: + { + if ((flags & Snapshot) !== NoFlags$1) { + throw new Error('This unit of work tag should not have side-effects. This error is ' + 'likely caused by a bug in React. Please file an issue.'); } } - } + } - function commitClassLayoutLifecycles(finishedWork, current) { - var instance = finishedWork.stateNode; + if ((flags & Snapshot) !== NoFlags$1) { + resetCurrentFiber(); + } +} - if (current === null) { - // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "componentDidMount. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); - } +function commitHookEffectListUnmount(flags, finishedWork, nearestMountedAncestor) { + var updateQueue = finishedWork.updateQueue; + var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; + + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "componentDidMount. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + do { + if ((effect.tag & flags) === flags) { + // Unmount + var inst = effect.inst; + var destroy = inst.destroy; + + if (destroy !== undefined) { + inst.destroy = undefined; + + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectUnmountStarted(finishedWork); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectUnmountStarted(finishedWork); } } - } - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(true); + } } - recordLayoutEffectDuration(finishedWork); - } else { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } - } else { - var prevProps = resolveClassComponentProps( - finishedWork.type, - current.memoizedProps, - finishedWork.elementType === finishedWork.type - ); - var prevState = current.memoizedState; // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. + safelyCallDestroy(finishedWork, nearestMountedAncestor, destroy); - { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "componentDidUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(false); } + } - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "componentDidUpdate. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectUnmountStopped(); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectUnmountStopped(); } } } + } - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - instance.componentDidUpdate( - prevProps, - prevState, - instance.__reactInternalSnapshotBeforeUpdate - ); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + effect = effect.next; + } while (effect !== firstEffect); + } +} + +function commitHookEffectListMount(flags, finishedWork) { + var updateQueue = finishedWork.updateQueue; + var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null; + + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; + + do { + if ((effect.tag & flags) === flags) { + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectMountStarted(finishedWork); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectMountStarted(finishedWork); } + } // Mount - recordLayoutEffectDuration(finishedWork); - } else { - try { - instance.componentDidUpdate( - prevProps, - prevState, - instance.__reactInternalSnapshotBeforeUpdate - ); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + + var create = effect.create; + + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(true); } } - } - } - function commitClassCallbacks(finishedWork) { - // TODO: I think this is now always non-null by the time it reaches the - // commit phase. Consider removing the type check. - var updateQueue = finishedWork.updateQueue; + var inst = effect.inst; + var destroy = create(); + inst.destroy = destroy; - if (updateQueue !== null) { - var instance = finishedWork.stateNode; + { + if ((flags & Insertion) !== NoFlags) { + setIsRunningInsertionEffect(false); + } + } + + { + if ((flags & Passive) !== NoFlags) { + markComponentPassiveEffectMountStopped(); + } else if ((flags & Layout) !== NoFlags) { + markComponentLayoutEffectMountStopped(); + } + } { - if ( - !finishedWork.type.defaultProps && - !("ref" in finishedWork.memoizedProps) && - !didWarnAboutReassigningProps - ) { - if (instance.props !== finishedWork.memoizedProps) { - error( - "Expected %s props to match memoized props before " + - "processing the update queue. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.props`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + if (destroy !== undefined && typeof destroy !== 'function') { + var hookName = void 0; + + if ((effect.tag & Layout) !== NoFlags$1) { + hookName = 'useLayoutEffect'; + } else if ((effect.tag & Insertion) !== NoFlags$1) { + hookName = 'useInsertionEffect'; + } else { + hookName = 'useEffect'; } - if (instance.state !== finishedWork.memoizedState) { - error( - "Expected %s state to match memoized state before " + - "processing the update queue. " + - "This might either be because of a bug in React, or because " + - "a component reassigns its own `this.state`. " + - "Please file an issue.", - getComponentNameFromFiber(finishedWork) || "instance" - ); + var addendum = void 0; + + if (destroy === null) { + addendum = ' You returned null. If your effect does not require clean ' + 'up, return undefined (or nothing).'; + } else if (typeof destroy.then === 'function') { + addendum = '\n\nIt looks like you wrote ' + hookName + '(async () => ...) or returned a Promise. ' + 'Instead, write the async function inside your effect ' + 'and call it immediately:\n\n' + hookName + '(() => {\n' + ' async function fetchData() {\n' + ' // You can await here\n' + ' const response = await MyAPI.getData(someId);\n' + ' // ...\n' + ' }\n' + ' fetchData();\n' + "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + 'Learn more about data fetching with Hooks: https://react.dev/link/hooks-data-fetching'; + } else { + addendum = ' You returned: ' + destroy; } - } - } // We could update instance props and state here, - // but instead we rely on them being set during last render. - // TODO: revisit this when we implement resuming. - try { - commitCallbacks(updateQueue, instance); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + error('%s must not return anything besides a function, ' + 'which is used for clean-up.%s', hookName, addendum); + } } } - } - function commitHostComponentMount(finishedWork) { - var type = finishedWork.type; - var props = finishedWork.memoizedProps; - var instance = finishedWork.stateNode; + effect = effect.next; + } while (effect !== firstEffect); + } +} - try { - commitMount(instance, type, props, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } - } +function commitPassiveEffectDurations(finishedRoot, finishedWork) { + if (getExecutionContext() & CommitContext) { + // Only Profilers with work in their subtree will have an Update effect scheduled. + if ((finishedWork.flags & Update) !== NoFlags$1) { + switch (finishedWork.tag) { + case Profiler: + { + var passiveEffectDuration = finishedWork.stateNode.passiveEffectDuration; + var _finishedWork$memoize = finishedWork.memoizedProps, + id = _finishedWork$memoize.id, + onPostCommit = _finishedWork$memoize.onPostCommit; // This value will still reflect the previous commit phase. + // It does not get reset until the start of the next commit phase. - function commitProfilerUpdate(finishedWork, current) { - if (getExecutionContext() & CommitContext) { - try { - var _finishedWork$memoize2 = finishedWork.memoizedProps, - onCommit = _finishedWork$memoize2.onCommit, - onRender = _finishedWork$memoize2.onRender; - var effectDuration = finishedWork.stateNode.effectDuration; - var commitTime = getCommitTime(); - var phase = current === null ? "mount" : "update"; - - if (enableProfilerNestedUpdatePhase) { - if (isCurrentUpdateNested()) { - phase = "nested-update"; + var commitTime = getCommitTime(); + var phase = finishedWork.alternate === null ? 'mount' : 'update'; + + { + if (isCurrentUpdateNested()) { + phase = 'nested-update'; + } } - } - if (typeof onRender === "function") { - onRender( - finishedWork.memoizedProps.id, - phase, - finishedWork.actualDuration, - finishedWork.treeBaseDuration, - finishedWork.actualStartTime, - commitTime - ); - } + if (typeof onPostCommit === 'function') { + onPostCommit(id, phase, passiveEffectDuration, commitTime); + } // Bubble times to the next nearest ancestor Profiler. + // After we process that Profiler, we'll bubble further up. - if (enableProfilerCommitHooks) { - if (typeof onCommit === "function") { - onCommit( - finishedWork.memoizedProps.id, - phase, - effectDuration, - commitTime - ); - } // Schedule a passive effect for this Profiler to call onPostCommit hooks. - // This effect should be scheduled even if there is no onPostCommit callback for this Profiler, - // because the effect is also where times bubble to parent Profilers. - - enqueuePendingPassiveProfilerEffect(finishedWork); // Propagate layout effect durations to the next nearest Profiler ancestor. - // Do not reset these values until the next render so DevTools has a chance to read them first. var parentFiber = finishedWork.return; @@ -23479,4384 +19812,4097 @@ to return true:wantsResponderID| | switch (parentFiber.tag) { case HostRoot: var root = parentFiber.stateNode; - root.effectDuration += effectDuration; + root.passiveEffectDuration += passiveEffectDuration; break outer; case Profiler: var parentStateNode = parentFiber.stateNode; - parentStateNode.effectDuration += effectDuration; + parentStateNode.passiveEffectDuration += passiveEffectDuration; break outer; } parentFiber = parentFiber.return; } + + break; } - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } + } +} + +function commitHookLayoutEffects(finishedWork, hookFlags) { + // At this point layout effects have already been destroyed (during mutation phase). + // This is done to prevent sibling component effects from interfering with each other, + // e.g. a destroy function in one component should never override a ref set + // by a create function in another component during the same commit. + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + + recordLayoutEffectDuration(finishedWork); + } else { + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} + +function commitClassLayoutLifecycles(finishedWork, current) { + var instance = finishedWork.stateNode; + + if (current === null) { + // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } + + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } } } - function commitLayoutEffectOnFiber( - finishedRoot, - current, - finishedWork, - committedLanes - ) { - // When updating this function, also update reappearLayoutEffects, which does - // most of the same things when an offscreen tree goes from hidden -> visible. - var flags = finishedWork.flags; + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + recordLayoutEffectDuration(finishedWork); + } else { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } + } else { + var prevProps = resolveClassComponentProps(finishedWork.type, current.memoizedProps, finishedWork.elementType === finishedWork.type); + var prevState = current.memoizedState; // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. - if (flags & Update) { - commitHookLayoutEffects(finishedWork, Layout | HasEffect); - } + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } - break; + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } + } + } - case ClassComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - if (flags & Update) { - commitClassLayoutLifecycles(finishedWork, current); - } + recordLayoutEffectDuration(finishedWork); + } else { + try { + instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } + } +} - if (flags & Callback) { - commitClassCallbacks(finishedWork); - } +function commitClassCallbacks(finishedWork) { + // TODO: I think this is now always non-null by the time it reaches the + // commit phase. Consider removing the type check. + var updateQueue = finishedWork.updateQueue; - if (flags & Ref) { - safelyAttachRef(finishedWork, finishedWork.return); - } + if (updateQueue !== null) { + var instance = finishedWork.stateNode; - break; + { + if (!finishedWork.type.defaultProps && !('ref' in finishedWork.memoizedProps) && !didWarnAboutReassigningProps) { + if (instance.props !== finishedWork.memoizedProps) { + error('Expected %s props to match memoized props before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); } - case HostRoot: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + if (instance.state !== finishedWork.memoizedState) { + error('Expected %s state to match memoized state before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.state`. ' + 'Please file an issue.', getComponentNameFromFiber(finishedWork) || 'instance'); + } + } + } // We could update instance props and state here, + // but instead we rely on them being set during last render. + // TODO: revisit this when we implement resuming. - if (flags & Callback) { - // TODO: I think this is now always non-null by the time it reaches the - // commit phase. Consider removing the type check. - var updateQueue = finishedWork.updateQueue; - if (updateQueue !== null) { - var instance = null; + try { + commitCallbacks(updateQueue, instance); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - if (finishedWork.child !== null) { - switch (finishedWork.child.tag) { - case HostSingleton: - case HostComponent: - instance = getPublicInstance(finishedWork.child.stateNode); - break; +function commitHostComponentMount(finishedWork) { + var type = finishedWork.type; + var props = finishedWork.memoizedProps; + var instance = finishedWork.stateNode; - case ClassComponent: - instance = finishedWork.child.stateNode; - break; - } - } + try { + commitMount(instance, type, props, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } +} - try { - commitCallbacks(updateQueue, instance); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } +function commitProfilerUpdate(finishedWork, current) { + if (getExecutionContext() & CommitContext) { + try { + var _finishedWork$memoize2 = finishedWork.memoizedProps, + onCommit = _finishedWork$memoize2.onCommit, + onRender = _finishedWork$memoize2.onRender; + var effectDuration = finishedWork.stateNode.effectDuration; + var commitTime = getCommitTime(); + var phase = current === null ? 'mount' : 'update'; - break; + if (enableProfilerNestedUpdatePhase) { + if (isCurrentUpdateNested()) { + phase = 'nested-update'; } + } - case HostHoistable: + if (typeof onRender === 'function') { + onRender(finishedWork.memoizedProps.id, phase, finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, commitTime); + } - case HostSingleton: - case HostComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // Renderers may schedule work to be done after host components are mounted - // (eg DOM renderer may schedule auto-focus for inputs and form controls). - // These effects should only be committed when components are first mounted, - // aka when there is no current/alternate. - - if (current === null && flags & Update) { - commitHostComponentMount(finishedWork); - } + if (enableProfilerCommitHooks) { + if (typeof onCommit === 'function') { + onCommit(finishedWork.memoizedProps.id, phase, effectDuration, commitTime); + } // Schedule a passive effect for this Profiler to call onPostCommit hooks. + // This effect should be scheduled even if there is no onPostCommit callback for this Profiler, + // because the effect is also where times bubble to parent Profilers. - if (flags & Ref) { - safelyAttachRef(finishedWork, finishedWork.return); + + enqueuePendingPassiveProfilerEffect(finishedWork); // Propagate layout effect durations to the next nearest Profiler ancestor. + // Do not reset these values until the next render so DevTools has a chance to read them first. + + var parentFiber = finishedWork.return; + + outer: while (parentFiber !== null) { + switch (parentFiber.tag) { + case HostRoot: + var root = parentFiber.stateNode; + root.effectDuration += effectDuration; + break outer; + + case Profiler: + var parentStateNode = parentFiber.stateNode; + parentStateNode.effectDuration += effectDuration; + break outer; } - break; + parentFiber = parentFiber.return; + } + } + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} + +function commitLayoutEffectOnFiber(finishedRoot, current, finishedWork, committedLanes) { + // When updating this function, also update reappearLayoutEffects, which does + // most of the same things when an offscreen tree goes from hidden -> visible. + var flags = finishedWork.flags; + + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + + if (flags & Update) { + commitHookLayoutEffects(finishedWork, Layout | HasEffect); } - case Profiler: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // TODO: Should this fire inside an offscreen tree? Or should it wait to - // fire when the tree becomes visible again. + break; + } - if (flags & Update) { - commitProfilerUpdate(finishedWork, current); - } + case ClassComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - break; + if (flags & Update) { + commitClassLayoutLifecycles(finishedWork, current); } - case SuspenseComponent: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + if (flags & Callback) { + commitClassCallbacks(finishedWork); + } - break; + if (flags & Ref) { + safelyAttachRef(finishedWork, finishedWork.return); } - case OffscreenComponent: { - var isModernRoot = (finishedWork.mode & ConcurrentMode) !== NoMode; - - if (isModernRoot) { - var isHidden = finishedWork.memoizedState !== null; - var newOffscreenSubtreeIsHidden = - isHidden || offscreenSubtreeIsHidden; - - if (newOffscreenSubtreeIsHidden); - else { - // The Offscreen tree is visible. - var wasHidden = - current !== null && current.memoizedState !== null; - var newOffscreenSubtreeWasHidden = - wasHidden || offscreenSubtreeWasHidden; - var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = newOffscreenSubtreeIsHidden; - offscreenSubtreeWasHidden = newOffscreenSubtreeWasHidden; - - if (offscreenSubtreeWasHidden && !prevOffscreenSubtreeWasHidden) { - // This is the root of a reappearing boundary. As we continue - // traversing the layout effects, we must also re-mount layout - // effects that were unmounted when the Offscreen subtree was - // hidden. So this is a superset of the normal commitLayoutEffects. - var includeWorkInProgressEffects = - (finishedWork.subtreeFlags & LayoutMask) !== NoFlags$1; - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - } else { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + break; + } + + case HostRoot: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + + if (flags & Callback) { + // TODO: I think this is now always non-null by the time it reaches the + // commit phase. Consider removing the type check. + var updateQueue = finishedWork.updateQueue; + + if (updateQueue !== null) { + var instance = null; + + if (finishedWork.child !== null) { + switch (finishedWork.child.tag) { + case HostSingleton: + case HostComponent: + instance = getPublicInstance(finishedWork.child.stateNode); + break; + + case ClassComponent: + instance = finishedWork.child.stateNode; + break; } + } - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + try { + commitCallbacks(updateQueue, instance); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } - } else { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); } + } - if (flags & Ref) { - var props = finishedWork.memoizedProps; + break; + } - if (props.mode === "manual") { - safelyAttachRef(finishedWork, finishedWork.return); - } else { - safelyDetachRef(finishedWork, finishedWork.return); - } - } + case HostHoistable: - break; + case HostSingleton: + case HostComponent: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // Renderers may schedule work to be done after host components are mounted + // (eg DOM renderer may schedule auto-focus for inputs and form controls). + // These effects should only be committed when components are first mounted, + // aka when there is no current/alternate. + + if (current === null && flags & Update) { + commitHostComponentMount(finishedWork); } - default: { - recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - break; + if (flags & Ref) { + safelyAttachRef(finishedWork, finishedWork.return); } + + break; } - } - function hideOrUnhideAllChildren(finishedWork, isHidden) { - // Only hide or unhide the top-most host nodes. - var hostSubtreeRoot = null; + case Profiler: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); // TODO: Should this fire inside an offscreen tree? Or should it wait to + // fire when the tree becomes visible again. + + if (flags & Update) { + commitProfilerUpdate(finishedWork, current); + } + + break; + } + case SuspenseComponent: { - // We only have the top Fiber that was inserted but we need to recurse down its - // children to find all the terminal nodes. - var node = finishedWork; + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); - while (true) { - if (node.tag === HostComponent || false || false) { - if (hostSubtreeRoot === null) { - hostSubtreeRoot = node; + break; + } - try { - var instance = node.stateNode; + case OffscreenComponent: + { + var isModernRoot = (finishedWork.mode & ConcurrentMode) !== NoMode; - if (isHidden) { - hideInstance(instance); - } else { - unhideInstance(node.stateNode, node.memoizedProps); - } - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } else if (node.tag === HostText) { - if (hostSubtreeRoot === null) { - try { - var _instance = node.stateNode; + if (isModernRoot) { + var isHidden = finishedWork.memoizedState !== null; + var newOffscreenSubtreeIsHidden = isHidden || offscreenSubtreeIsHidden; - if (isHidden) { - hideTextInstance(_instance); - } else { - unhideTextInstance(_instance, node.memoizedProps); - } - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } + if (newOffscreenSubtreeIsHidden) ; else { + // The Offscreen tree is visible. + var wasHidden = current !== null && current.memoizedState !== null; + var newOffscreenSubtreeWasHidden = wasHidden || offscreenSubtreeWasHidden; + var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = newOffscreenSubtreeIsHidden; + offscreenSubtreeWasHidden = newOffscreenSubtreeWasHidden; + + if (offscreenSubtreeWasHidden && !prevOffscreenSubtreeWasHidden) { + // This is the root of a reappearing boundary. As we continue + // traversing the layout effects, we must also re-mount layout + // effects that were unmounted when the Offscreen subtree was + // hidden. So this is a superset of the normal commitLayoutEffects. + var includeWorkInProgressEffects = (finishedWork.subtreeFlags & LayoutMask) !== NoFlags$1; + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + } else { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); } - } else if ( - (node.tag === OffscreenComponent || - node.tag === LegacyHiddenComponent) && - node.memoizedState !== null && - node !== finishedWork - ); - else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; - } - if (node === finishedWork) { - return; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; } + } else { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + } - while (node.sibling === null) { - if (node.return === null || node.return === finishedWork) { - return; - } - - if (hostSubtreeRoot === node) { - hostSubtreeRoot = null; - } + if (flags & Ref) { + var props = finishedWork.memoizedProps; - node = node.return; + if (props.mode === 'manual') { + safelyAttachRef(finishedWork, finishedWork.return); + } else { + safelyDetachRef(finishedWork, finishedWork.return); } + } - if (hostSubtreeRoot === node) { - hostSubtreeRoot = null; - } + break; + } - node.sibling.return = node.return; - node = node.sibling; - } + default: + { + recursivelyTraverseLayoutEffects(finishedRoot, finishedWork); + break; } - } + } +} - function commitAttachRef(finishedWork) { - var ref = finishedWork.ref; +function hideOrUnhideAllChildren(finishedWork, isHidden) { + // Only hide or unhide the top-most host nodes. + var hostSubtreeRoot = null; - if (ref !== null) { - var instance = finishedWork.stateNode; - var instanceToUse; + { + // We only have the top Fiber that was inserted but we need to recurse down its + // children to find all the terminal nodes. + var node = finishedWork; - switch (finishedWork.tag) { - case HostHoistable: - case HostSingleton: - case HostComponent: - instanceToUse = getPublicInstance(instance); - break; + while (true) { + if (node.tag === HostComponent || (false) || (false)) { + if (hostSubtreeRoot === null) { + hostSubtreeRoot = node; - default: - instanceToUse = instance; - } // Moved outside to ensure DCE works with this flag + try { + var instance = node.stateNode; - if (typeof ref === "function") { - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - finishedWork.refCleanup = ref(instanceToUse); - } finally { - recordLayoutEffectDuration(finishedWork); + if (isHidden) { + hideInstance(instance); + } else { + unhideInstance(node.stateNode, node.memoizedProps); } - } else { - finishedWork.refCleanup = ref(instanceToUse); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } - } else { - { - // TODO: We should move these warnings to happen during the render - // phase (markRef). - if (!ref.hasOwnProperty("current")) { - error( - "Unexpected ref object provided for %s. " + - "Use either a ref-setter function or React.createRef().", - getComponentNameFromFiber(finishedWork) - ); - } - } // $FlowFixMe[incompatible-use] unable to narrow type to the non-function case + } + } else if (node.tag === HostText) { + if (hostSubtreeRoot === null) { + try { + var _instance = node.stateNode; - ref.current = instanceToUse; + if (isHidden) { + hideTextInstance(_instance); + } else { + unhideTextInstance(_instance, node.memoizedProps); + } + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } } + } else if ((node.tag === OffscreenComponent || node.tag === LegacyHiddenComponent) && node.memoizedState !== null && node !== finishedWork) ; else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; } - } - function detachFiberMutation(fiber) { - // Cut off the return pointer to disconnect it from the tree. - // This enables us to detect and warn against state updates on an unmounted component. - // It also prevents events from bubbling from within disconnected components. - // - // Ideally, we should also clear the child pointer of the parent alternate to let this - // get GC:ed but we don't know which for sure which parent is the current - // one so we'll settle for GC:ing the subtree of this child. - // This child itself will be GC:ed when the parent updates the next time. - // - // Note that we can't clear child or sibling pointers yet. - // They're needed for passive effects and for findDOMNode. - // We defer those fields, and all other cleanup, to the passive phase (see detachFiberAfterEffects). - // - // Don't reset the alternate yet, either. We need that so we can detach the - // alternate's fields in the passive phase. Clearing the return pointer is - // sufficient for findDOMNode semantics. - var alternate = fiber.alternate; + if (node === finishedWork) { + return; + } - if (alternate !== null) { - alternate.return = null; + while (node.sibling === null) { + if (node.return === null || node.return === finishedWork) { + return; + } + + if (hostSubtreeRoot === node) { + hostSubtreeRoot = null; + } + + node = node.return; } - fiber.return = null; + if (hostSubtreeRoot === node) { + hostSubtreeRoot = null; + } + + node.sibling.return = node.return; + node = node.sibling; } + } +} - function detachFiberAfterEffects(fiber) { - var alternate = fiber.alternate; +function commitAttachRef(finishedWork) { + var ref = finishedWork.ref; - if (alternate !== null) { - fiber.alternate = null; - detachFiberAfterEffects(alternate); - } // Clear cyclical Fiber fields. This level alone is designed to roughly - // approximate the planned Fiber refactor. In that world, `setState` will be - // bound to a special "instance" object instead of a Fiber. The Instance - // object will not have any of these fields. It will only be connected to - // the fiber tree via a single link at the root. So if this level alone is - // sufficient to fix memory issues, that bodes well for our plans. + if (ref !== null) { + var instance = finishedWork.stateNode; + var instanceToUse; - fiber.child = null; - fiber.deletions = null; - fiber.sibling = null; // The `stateNode` is cyclical because on host nodes it points to the host + switch (finishedWork.tag) { + case HostHoistable: + case HostSingleton: + case HostComponent: + instanceToUse = getPublicInstance(instance); + break; - fiber.stateNode = null; + default: + instanceToUse = instance; + } // Moved outside to ensure DCE works with this flag + if (typeof ref === 'function') { + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + finishedWork.refCleanup = ref(instanceToUse); + } finally { + recordLayoutEffectDuration(finishedWork); + } + } else { + finishedWork.refCleanup = ref(instanceToUse); + } + } else { { - fiber._debugOwner = null; - } // Theoretically, nothing in here should be necessary, because we already - // disconnected the fiber from the tree. So even if something leaks this - // particular fiber, it won't leak anything else. + // TODO: We should move these warnings to happen during the render + // phase (markRef). + if (!ref.hasOwnProperty('current')) { + error('Unexpected ref object provided for %s. ' + 'Use either a ref-setter function or React.createRef().', getComponentNameFromFiber(finishedWork)); + } + } // $FlowFixMe[incompatible-use] unable to narrow type to the non-function case - fiber.return = null; - fiber.dependencies = null; - fiber.memoizedProps = null; - fiber.memoizedState = null; - fiber.pendingProps = null; - fiber.stateNode = null; // TODO: Move to `commitPassiveUnmountInsideDeletedTreeOnFiber` instead. - fiber.updateQueue = null; + ref.current = instanceToUse; } + } +} - function getHostParentFiber(fiber) { - var parent = fiber.return; +function detachFiberMutation(fiber) { + // Cut off the return pointer to disconnect it from the tree. + // This enables us to detect and warn against state updates on an unmounted component. + // It also prevents events from bubbling from within disconnected components. + // + // Ideally, we should also clear the child pointer of the parent alternate to let this + // get GC:ed but we don't know which for sure which parent is the current + // one so we'll settle for GC:ing the subtree of this child. + // This child itself will be GC:ed when the parent updates the next time. + // + // Note that we can't clear child or sibling pointers yet. + // They're needed for passive effects and for findDOMNode. + // We defer those fields, and all other cleanup, to the passive phase (see detachFiberAfterEffects). + // + // Don't reset the alternate yet, either. We need that so we can detach the + // alternate's fields in the passive phase. Clearing the return pointer is + // sufficient for findDOMNode semantics. + var alternate = fiber.alternate; + + if (alternate !== null) { + alternate.return = null; + } + + fiber.return = null; +} - while (parent !== null) { - if (isHostParent(parent)) { - return parent; - } +function detachFiberAfterEffects(fiber) { + var alternate = fiber.alternate; - parent = parent.return; - } + if (alternate !== null) { + fiber.alternate = null; + detachFiberAfterEffects(alternate); + } // Clear cyclical Fiber fields. This level alone is designed to roughly + // approximate the planned Fiber refactor. In that world, `setState` will be + // bound to a special "instance" object instead of a Fiber. The Instance + // object will not have any of these fields. It will only be connected to + // the fiber tree via a single link at the root. So if this level alone is + // sufficient to fix memory issues, that bodes well for our plans. - throw new Error( - "Expected to find a host parent. This error is likely caused by a bug " + - "in React. Please file an issue." - ); - } - function isHostParent(fiber) { - return ( - fiber.tag === HostComponent || - fiber.tag === HostRoot || - false || - false || - fiber.tag === HostPortal - ); - } + fiber.child = null; + fiber.deletions = null; + fiber.sibling = null; // The `stateNode` is cyclical because on host nodes it points to the host - function getHostSibling(fiber) { - // We're going to search forward into the tree until we find a sibling host - // node. Unfortunately, if multiple insertions are done in a row we have to - // search past them. This leads to exponential search for the next sibling. - // TODO: Find a more efficient way to do this. - var node = fiber; + fiber.stateNode = null; - siblings: while (true) { - // If we didn't find anything, let's try the next sibling. - while (node.sibling === null) { - if (node.return === null || isHostParent(node.return)) { - // If we pop out of the root or hit the parent the fiber we are the - // last sibling. - return null; - } // $FlowFixMe[incompatible-type] found when upgrading Flow - - node = node.return; - } - - node.sibling.return = node.return; - node = node.sibling; - - while ( - node.tag !== HostComponent && - node.tag !== HostText && - true && - node.tag !== DehydratedFragment - ) { - // If it is not host node and, we might have a host node inside it. - // Try to search down until we find one. - if (node.flags & Placement) { - // If we don't have a child, try the siblings instead. - continue siblings; - } // If we don't have a child, try the siblings instead. - // We also skip portals because they are not part of this host tree. - - if (node.child === null || node.tag === HostPortal) { - continue siblings; - } else { - node.child.return = node; - node = node.child; - } - } // Check if this host node is stable or about to be placed. + { + fiber._debugOwner = null; + } // Theoretically, nothing in here should be necessary, because we already + // disconnected the fiber from the tree. So even if something leaks this + // particular fiber, it won't leak anything else. - if (!(node.flags & Placement)) { - // Found it! - return node.stateNode; - } - } - } - function commitPlacement(finishedWork) { - var parentFiber = getHostParentFiber(finishedWork); + fiber.return = null; + fiber.dependencies = null; + fiber.memoizedProps = null; + fiber.memoizedState = null; + fiber.pendingProps = null; + fiber.stateNode = null; // TODO: Move to `commitPassiveUnmountInsideDeletedTreeOnFiber` instead. - switch (parentFiber.tag) { - case HostSingleton: + fiber.updateQueue = null; +} - case HostComponent: { - var _parent = parentFiber.stateNode; +function getHostParentFiber(fiber) { + var parent = fiber.return; - if (parentFiber.flags & ContentReset) { - parentFiber.flags &= ~ContentReset; - } + while (parent !== null) { + if (isHostParent(parent)) { + return parent; + } - var _before = getHostSibling(finishedWork); // We only have the top Fiber that was inserted but we need to recurse down its - // children to find all the terminal nodes. + parent = parent.return; + } - insertOrAppendPlacementNode(finishedWork, _before, _parent); - break; - } + throw new Error('Expected to find a host parent. This error is likely caused by a bug ' + 'in React. Please file an issue.'); +} - case HostRoot: - case HostPortal: { - var _parent2 = parentFiber.stateNode.containerInfo; +function isHostParent(fiber) { + return fiber.tag === HostComponent || fiber.tag === HostRoot || (false) || (false) || fiber.tag === HostPortal; +} - var _before2 = getHostSibling(finishedWork); +function getHostSibling(fiber) { + // We're going to search forward into the tree until we find a sibling host + // node. Unfortunately, if multiple insertions are done in a row we have to + // search past them. This leads to exponential search for the next sibling. + // TODO: Find a more efficient way to do this. + var node = fiber; + + siblings: while (true) { + // If we didn't find anything, let's try the next sibling. + while (node.sibling === null) { + if (node.return === null || isHostParent(node.return)) { + // If we pop out of the root or hit the parent the fiber we are the + // last sibling. + return null; + } // $FlowFixMe[incompatible-type] found when upgrading Flow - insertOrAppendPlacementNodeIntoContainer( - finishedWork, - _before2, - _parent2 - ); - break; - } - default: - throw new Error( - "Invalid host parent fiber. This error is likely caused by a bug " + - "in React. Please file an issue." - ); - } + node = node.return; } - function insertOrAppendPlacementNodeIntoContainer(node, before, parent) { - var tag = node.tag; - var isHost = tag === HostComponent || tag === HostText; - - if (isHost) { - var stateNode = node.stateNode; + node.sibling.return = node.return; + node = node.sibling; - if (before) { - insertInContainerBefore(parent); - } else { - appendChildToContainer(parent, stateNode); - } - } else if (tag === HostPortal || false); - else { - var child = node.child; + while (node.tag !== HostComponent && node.tag !== HostText && (true ) && node.tag !== DehydratedFragment) { + // If it is not host node and, we might have a host node inside it. + // Try to search down until we find one. + if (node.flags & Placement) { + // If we don't have a child, try the siblings instead. + continue siblings; + } // If we don't have a child, try the siblings instead. + // We also skip portals because they are not part of this host tree. - if (child !== null) { - insertOrAppendPlacementNodeIntoContainer(child, before, parent); - var sibling = child.sibling; - while (sibling !== null) { - insertOrAppendPlacementNodeIntoContainer(sibling, before, parent); - sibling = sibling.sibling; - } - } + if (node.child === null || node.tag === HostPortal) { + continue siblings; + } else { + node.child.return = node; + node = node.child; } - } + } // Check if this host node is stable or about to be placed. - function insertOrAppendPlacementNode(node, before, parent) { - var tag = node.tag; - var isHost = tag === HostComponent || tag === HostText; - if (isHost) { - var stateNode = node.stateNode; + if (!(node.flags & Placement)) { + // Found it! + return node.stateNode; + } + } +} - if (before) { - insertBefore(parent, stateNode, before); - } else { - appendChild(parent, stateNode); - } - } else if (tag === HostPortal || false); - else { - var child = node.child; +function commitPlacement(finishedWork) { - if (child !== null) { - insertOrAppendPlacementNode(child, before, parent); - var sibling = child.sibling; - while (sibling !== null) { - insertOrAppendPlacementNode(sibling, before, parent); - sibling = sibling.sibling; - } - } - } - } // These are tracked on the stack as we recursively traverse a - // deleted subtree. - // TODO: Update these during the whole mutation phase, not just during - // a deletion. + var parentFiber = getHostParentFiber(finishedWork); - var hostParent = null; - var hostParentIsContainer = false; + switch (parentFiber.tag) { + case HostSingleton: - function commitDeletionEffects(root, returnFiber, deletedFiber) { + case HostComponent: { - // We only have the top Fiber that was deleted but we need to recurse down its - // children to find all the terminal nodes. - // Recursively delete all host nodes from the parent, detach refs, clean - // up mounted layout effects, and call componentWillUnmount. - // We only need to remove the topmost host child in each branch. But then we - // still need to keep traversing to unmount effects, refs, and cWU. TODO: We - // could split this into two separate traversals functions, where the second - // one doesn't include any removeChild logic. This is maybe the same - // function as "disappearLayoutEffects" (or whatever that turns into after - // the layout phase is refactored to use recursion). - // Before starting, find the nearest host parent on the stack so we know - // which instance/container to remove the children from. - // TODO: Instead of searching up the fiber return path on every deletion, we - // can track the nearest host component on the JS stack as we traverse the - // tree during the commit phase. This would make insertions faster, too. - var parent = returnFiber; - - findParent: while (parent !== null) { - switch (parent.tag) { - case HostSingleton: - case HostComponent: { - hostParent = parent.stateNode; - hostParentIsContainer = false; - break findParent; - } - - case HostRoot: { - hostParent = parent.stateNode.containerInfo; - hostParentIsContainer = true; - break findParent; - } + var _parent = parentFiber.stateNode; - case HostPortal: { - hostParent = parent.stateNode.containerInfo; - hostParentIsContainer = true; - break findParent; - } - } + if (parentFiber.flags & ContentReset) { - parent = parent.return; + parentFiber.flags &= ~ContentReset; } - if (hostParent === null) { - throw new Error( - "Expected to find a host parent. This error is likely caused by " + - "a bug in React. Please file an issue." - ); - } + var _before = getHostSibling(finishedWork); // We only have the top Fiber that was inserted but we need to recurse down its + // children to find all the terminal nodes. + - commitDeletionEffectsOnFiber(root, returnFiber, deletedFiber); - hostParent = null; - hostParentIsContainer = false; + insertOrAppendPlacementNode(finishedWork, _before, _parent); + break; } - detachFiberMutation(deletedFiber); - } + case HostRoot: + case HostPortal: + { + var _parent2 = parentFiber.stateNode.containerInfo; - function recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - parent - ) { - // TODO: Use a static flag to skip trees that don't have unmount effects - var child = parent.child; + var _before2 = getHostSibling(finishedWork); - while (child !== null) { - commitDeletionEffectsOnFiber( - finishedRoot, - nearestMountedAncestor, - child - ); - child = child.sibling; + insertOrAppendPlacementNodeIntoContainer(finishedWork, _before2, _parent2); + break; } - } - - function commitDeletionEffectsOnFiber( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ) { - onCommitUnmount(deletedFiber); // The cases in this outer switch modify the stack before they traverse - // into their subtree. There are simpler cases in the inner switch - // that don't modify the stack. - switch (deletedFiber.tag) { - case HostHoistable: + default: + throw new Error('Invalid host parent fiber. This error is likely caused by a bug ' + 'in React. Please file an issue.'); + } +} - case HostSingleton: +function insertOrAppendPlacementNodeIntoContainer(node, before, parent) { + var tag = node.tag; + var isHost = tag === HostComponent || tag === HostText; - case HostComponent: { - if (!offscreenSubtreeWasHidden) { - safelyDetachRef(deletedFiber, nearestMountedAncestor); - } // Intentional fallthrough to next branch - } + if (isHost) { + var stateNode = node.stateNode; - case HostText: { - // We only need to remove the nearest host child. Set the host parent - // to `null` on the stack to indicate that nested children don't - // need to be removed. - { - var _prevHostParent = hostParent; - var _prevHostParentIsContainer = hostParentIsContainer; - hostParent = null; - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - hostParent = _prevHostParent; - hostParentIsContainer = _prevHostParentIsContainer; - - if (hostParent !== null) { - // Now that all the child effects have unmounted, we can remove the - // node from the tree. - if (hostParentIsContainer) { - removeChildFromContainer(hostParent, deletedFiber.stateNode); - } else { - removeChild(hostParent, deletedFiber.stateNode); - } - } - } + if (before) { + insertInContainerBefore(parent); + } else { + appendChildToContainer(parent, stateNode); + } + } else if (tag === HostPortal || (false)) ; else { + var child = node.child; - return; - } + if (child !== null) { + insertOrAppendPlacementNodeIntoContainer(child, before, parent); + var sibling = child.sibling; - case DehydratedFragment: { - // Delete the dehydrated suspense boundary and all of its content. + while (sibling !== null) { + insertOrAppendPlacementNodeIntoContainer(sibling, before, parent); + sibling = sibling.sibling; + } + } + } +} +function insertOrAppendPlacementNode(node, before, parent) { + var tag = node.tag; + var isHost = tag === HostComponent || tag === HostText; + + if (isHost) { + var stateNode = node.stateNode; + + if (before) { + insertBefore(parent, stateNode, before); + } else { + appendChild(parent, stateNode); + } + } else if (tag === HostPortal || (false)) ; else { + var child = node.child; + + if (child !== null) { + insertOrAppendPlacementNode(child, before, parent); + var sibling = child.sibling; + + while (sibling !== null) { + insertOrAppendPlacementNode(sibling, before, parent); + sibling = sibling.sibling; + } + } + } +} // These are tracked on the stack as we recursively traverse a +// deleted subtree. +// TODO: Update these during the whole mutation phase, not just during +// a deletion. + + +var hostParent = null; +var hostParentIsContainer = false; + +function commitDeletionEffects(root, returnFiber, deletedFiber) { + { + // We only have the top Fiber that was deleted but we need to recurse down its + // children to find all the terminal nodes. + // Recursively delete all host nodes from the parent, detach refs, clean + // up mounted layout effects, and call componentWillUnmount. + // We only need to remove the topmost host child in each branch. But then we + // still need to keep traversing to unmount effects, refs, and cWU. TODO: We + // could split this into two separate traversals functions, where the second + // one doesn't include any removeChild logic. This is maybe the same + // function as "disappearLayoutEffects" (or whatever that turns into after + // the layout phase is refactored to use recursion). + // Before starting, find the nearest host parent on the stack so we know + // which instance/container to remove the children from. + // TODO: Instead of searching up the fiber return path on every deletion, we + // can track the nearest host component on the JS stack as we traverse the + // tree during the commit phase. This would make insertions faster, too. + var parent = returnFiber; + + findParent: while (parent !== null) { + switch (parent.tag) { + case HostSingleton: + case HostComponent: { - if (hostParent !== null) { - if (hostParentIsContainer) { - clearSuspenseBoundaryFromContainer(); - } else { - clearSuspenseBoundary(); - } - } + hostParent = parent.stateNode; + hostParentIsContainer = false; + break findParent; } - return; - } + case HostRoot: + { + hostParent = parent.stateNode.containerInfo; + hostParentIsContainer = true; + break findParent; + } - case HostPortal: { + case HostPortal: { - // When we go into a portal, it becomes the parent to remove from. - var _prevHostParent2 = hostParent; - var _prevHostParentIsContainer2 = hostParentIsContainer; - hostParent = deletedFiber.stateNode.containerInfo; + hostParent = parent.stateNode.containerInfo; hostParentIsContainer = true; - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - hostParent = _prevHostParent2; - hostParentIsContainer = _prevHostParentIsContainer2; + break findParent; } + } - return; - } + parent = parent.return; + } - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - if (!offscreenSubtreeWasHidden) { - var updateQueue = deletedFiber.updateQueue; + if (hostParent === null) { + throw new Error('Expected to find a host parent. This error is likely caused by ' + 'a bug in React. Please file an issue.'); + } - if (updateQueue !== null) { - var lastEffect = updateQueue.lastEffect; + commitDeletionEffectsOnFiber(root, returnFiber, deletedFiber); + hostParent = null; + hostParentIsContainer = false; + } - if (lastEffect !== null) { - var firstEffect = lastEffect.next; - var effect = firstEffect; + detachFiberMutation(deletedFiber); +} - do { - var tag = effect.tag; - var inst = effect.inst; - var destroy = inst.destroy; +function recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, parent) { + // TODO: Use a static flag to skip trees that don't have unmount effects + var child = parent.child; - if (destroy !== undefined) { - if ((tag & Insertion) !== NoFlags) { - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - } else if ((tag & Layout) !== NoFlags) { - { - markComponentLayoutEffectUnmountStarted(deletedFiber); - } + while (child !== null) { + commitDeletionEffectsOnFiber(finishedRoot, nearestMountedAncestor, child); + child = child.sibling; + } +} - if (shouldProfile(deletedFiber)) { - startLayoutEffectTimer(); - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - recordLayoutEffectDuration(deletedFiber); - } else { - inst.destroy = undefined; - safelyCallDestroy( - deletedFiber, - nearestMountedAncestor, - destroy - ); - } +function commitDeletionEffectsOnFiber(finishedRoot, nearestMountedAncestor, deletedFiber) { + onCommitUnmount(deletedFiber); // The cases in this outer switch modify the stack before they traverse + // into their subtree. There are simpler cases in the inner switch + // that don't modify the stack. - { - markComponentLayoutEffectUnmountStopped(); - } - } - } + switch (deletedFiber.tag) { + case HostHoistable: - effect = effect.next; - } while (effect !== firstEffect); - } - } - } + case HostSingleton: - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; - } + case HostComponent: + { + if (!offscreenSubtreeWasHidden) { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + } // Intentional fallthrough to next branch - case ClassComponent: { - if (!offscreenSubtreeWasHidden) { - safelyDetachRef(deletedFiber, nearestMountedAncestor); - var instance = deletedFiber.stateNode; + } - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount( - deletedFiber, - nearestMountedAncestor, - instance - ); + case HostText: + { + // We only need to remove the nearest host child. Set the host parent + // to `null` on the stack to indicate that nested children don't + // need to be removed. + { + var _prevHostParent = hostParent; + var _prevHostParentIsContainer = hostParentIsContainer; + hostParent = null; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + hostParent = _prevHostParent; + hostParentIsContainer = _prevHostParentIsContainer; + + if (hostParent !== null) { + // Now that all the child effects have unmounted, we can remove the + // node from the tree. + if (hostParentIsContainer) { + removeChildFromContainer(hostParent, deletedFiber.stateNode); + } else { + removeChild(hostParent, deletedFiber.stateNode); } } - - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; } - case ScopeComponent: { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; - } + return; + } - case OffscreenComponent: { - safelyDetachRef(deletedFiber, nearestMountedAncestor); + case DehydratedFragment: + { + // Delete the dehydrated suspense boundary and all of its content. - if (deletedFiber.mode & ConcurrentMode) { - // If this offscreen component is hidden, we already unmounted it. Before - // deleting the children, track that it's already unmounted so that we - // don't attempt to unmount the effects again. - // TODO: If the tree is hidden, in most cases we should be able to skip - // over the nested children entirely. An exception is we haven't yet found - // the topmost host node to delete, which we already track on the stack. - // But the other case is portals, which need to be detached no matter how - // deeply they are nested. We should use a subtree flag to track whether a - // subtree includes a nested portal. - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeWasHidden = - prevOffscreenSubtreeWasHidden || - deletedFiber.memoizedState !== null; - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; - } else { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - } - break; + { + if (hostParent !== null) { + if (hostParentIsContainer) { + clearSuspenseBoundaryFromContainer(); + } else { + clearSuspenseBoundary(); + } + } } - default: { - recursivelyTraverseDeletionEffects( - finishedRoot, - nearestMountedAncestor, - deletedFiber - ); - return; - } + return; } - } - function commitSuspenseCallback(finishedWork) {} + case HostPortal: + { + { + // When we go into a portal, it becomes the parent to remove from. + var _prevHostParent2 = hostParent; + var _prevHostParentIsContainer2 = hostParentIsContainer; + hostParent = deletedFiber.stateNode.containerInfo; + hostParentIsContainer = true; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + hostParent = _prevHostParent2; + hostParentIsContainer = _prevHostParentIsContainer2; + } + + return; + } - function getRetryCache(finishedWork) { - // TODO: Unify the interface for the retry cache so we don't have to switch - // on the tag like this. - switch (finishedWork.tag) { - case SuspenseComponent: - case SuspenseListComponent: { - var retryCache = finishedWork.stateNode; + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + if (!offscreenSubtreeWasHidden) { + var updateQueue = deletedFiber.updateQueue; - if (retryCache === null) { - retryCache = finishedWork.stateNode = new PossiblyWeakSet(); - } + if (updateQueue !== null) { + var lastEffect = updateQueue.lastEffect; + + if (lastEffect !== null) { + var firstEffect = lastEffect.next; + var effect = firstEffect; + + do { + var tag = effect.tag; + var inst = effect.inst; + var destroy = inst.destroy; + + if (destroy !== undefined) { + if ((tag & Insertion) !== NoFlags) { + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + } else if ((tag & Layout) !== NoFlags) { + { + markComponentLayoutEffectUnmountStarted(deletedFiber); + } - return retryCache; - } + if (shouldProfile(deletedFiber)) { + startLayoutEffectTimer(); + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + recordLayoutEffectDuration(deletedFiber); + } else { + inst.destroy = undefined; + safelyCallDestroy(deletedFiber, nearestMountedAncestor, destroy); + } - case OffscreenComponent: { - var instance = finishedWork.stateNode; - var _retryCache = instance._retryCache; + { + markComponentLayoutEffectUnmountStopped(); + } + } + } - if (_retryCache === null) { - _retryCache = instance._retryCache = new PossiblyWeakSet(); + effect = effect.next; + } while (effect !== firstEffect); + } } - - return _retryCache; } - default: { - throw new Error( - "Unexpected Suspense handler tag (" + - finishedWork.tag + - "). This is a " + - "bug in React." - ); - } + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; } - } - function detachOffscreenInstance(instance) { - var fiber = instance._current; + case ClassComponent: + { + if (!offscreenSubtreeWasHidden) { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + var instance = deletedFiber.stateNode; - if (fiber === null) { - throw new Error( - "Calling Offscreen.detach before instance handle has been set." - ); - } + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(deletedFiber, nearestMountedAncestor, instance); + } + } - if ((instance._pendingVisibility & OffscreenDetached) !== NoFlags$1) { - // The instance is already detached, this is a noop. + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); return; - } // TODO: There is an opportunity to optimise this by not entering commit phase - // and unmounting effects directly. + } - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + case ScopeComponent: + { - if (root !== null) { - instance._pendingVisibility |= OffscreenDetached; - scheduleUpdateOnFiber(root, fiber, SyncLane); + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + return; } - } - function attachOffscreenInstance(instance) { - var fiber = instance._current; - if (fiber === null) { - throw new Error( - "Calling Offscreen.detach before instance handle has been set." - ); + case OffscreenComponent: + { + safelyDetachRef(deletedFiber, nearestMountedAncestor); + + if (deletedFiber.mode & ConcurrentMode) { + // If this offscreen component is hidden, we already unmounted it. Before + // deleting the children, track that it's already unmounted so that we + // don't attempt to unmount the effects again. + // TODO: If the tree is hidden, in most cases we should be able to skip + // over the nested children entirely. An exception is we haven't yet found + // the topmost host node to delete, which we already track on the stack. + // But the other case is portals, which need to be detached no matter how + // deeply they are nested. We should use a subtree flag to track whether a + // subtree includes a nested portal. + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden || deletedFiber.memoizedState !== null; + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + } else { + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); + } + + break; } - if ((instance._pendingVisibility & OffscreenDetached) === NoFlags$1) { - // The instance is already attached, this is a noop. + default: + { + recursivelyTraverseDeletionEffects(finishedRoot, nearestMountedAncestor, deletedFiber); return; } + } +} - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); +function commitSuspenseCallback(finishedWork) { +} - if (root !== null) { - instance._pendingVisibility &= ~OffscreenDetached; - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } +function getRetryCache(finishedWork) { + // TODO: Unify the interface for the retry cache so we don't have to switch + // on the tag like this. + switch (finishedWork.tag) { + case SuspenseComponent: + case SuspenseListComponent: + { + var retryCache = finishedWork.stateNode; - function attachSuspenseRetryListeners(finishedWork, wakeables) { - // If this boundary just timed out, then it will have a set of wakeables. - // For each wakeable, attach a listener so that when it resolves, React - // attempts to re-render the boundary in the primary (pre-timeout) state. - var retryCache = getRetryCache(finishedWork); - wakeables.forEach(function (wakeable) { - // Memoize using the boundary fiber to prevent redundant listeners. - var retry = resolveRetryWakeable.bind(null, finishedWork, wakeable); + if (retryCache === null) { + retryCache = finishedWork.stateNode = new PossiblyWeakSet(); + } - if (!retryCache.has(wakeable)) { - retryCache.add(wakeable); + return retryCache; + } - { - if (isDevToolsPresent) { - if (inProgressLanes !== null && inProgressRoot !== null) { - // If we have pending work still, associate the original updaters with it. - restorePendingUpdaters(inProgressRoot, inProgressLanes); - } else { - throw Error( - "Expected finished root and lanes to be set. This is a bug in React." - ); - } - } - } + case OffscreenComponent: + { + var instance = finishedWork.stateNode; + var _retryCache = instance._retryCache; - wakeable.then(retry, retry); + if (_retryCache === null) { + _retryCache = instance._retryCache = new PossiblyWeakSet(); } - }); - } // This function detects when a Suspense boundary goes from visible to hidden. - function commitMutationEffects(root, finishedWork, committedLanes) { - inProgressLanes = committedLanes; - inProgressRoot = root; - setCurrentFiber(finishedWork); - commitMutationEffectsOnFiber(finishedWork, root); - setCurrentFiber(finishedWork); - inProgressLanes = null; - inProgressRoot = null; - } - - function recursivelyTraverseMutationEffects(root, parentFiber, lanes) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects hae fired. - var deletions = parentFiber.deletions; - - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; - try { - commitDeletionEffects(root, parentFiber, childToDelete); - } catch (error) { - captureCommitPhaseError(childToDelete, parentFiber, error); - } - } + return _retryCache; } - var prevDebugFiber = getCurrentFiber(); + default: + { + throw new Error("Unexpected Suspense handler tag (" + finishedWork.tag + "). This is a " + 'bug in React.'); + } + } +} - if (parentFiber.subtreeFlags & MutationMask) { - var child = parentFiber.child; +function detachOffscreenInstance(instance) { + var fiber = instance._current; - while (child !== null) { - setCurrentFiber(child); - commitMutationEffectsOnFiber(child, root); - child = child.sibling; - } - } + if (fiber === null) { + throw new Error('Calling Offscreen.detach before instance handle has been set.'); + } - setCurrentFiber(prevDebugFiber); - } + if ((instance._pendingVisibility & OffscreenDetached) !== NoFlags$1) { + // The instance is already detached, this is a noop. + return; + } // TODO: There is an opportunity to optimise this by not entering commit phase + // and unmounting effects directly. - function commitMutationEffectsOnFiber(finishedWork, root, lanes) { - var current = finishedWork.alternate; - var flags = finishedWork.flags; // The effect flag should be checked *after* we refine the type of fiber, - // because the fiber tag is more specific. An exception is any flag related - // to reconciliation, because those can be set on all fiber types. - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (flags & Update) { - try { - commitHookEffectListUnmount( - Insertion | HasEffect, - finishedWork, - finishedWork.return - ); - commitHookEffectListMount(Insertion | HasEffect, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } // Layout effects are destroyed during the mutation phase so that all - // destroy functions for all fibers are called before any create functions. - // This prevents sibling component effects from interfering with each other, - // e.g. a destroy function in one component should never override a ref set - // by a create function in another component during the same commit. + if (root !== null) { + instance._pendingVisibility |= OffscreenDetached; + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} +function attachOffscreenInstance(instance) { + var fiber = instance._current; - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListUnmount( - Layout | HasEffect, - finishedWork, - finishedWork.return - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } + if (fiber === null) { + throw new Error('Calling Offscreen.detach before instance handle has been set.'); + } - recordLayoutEffectDuration(finishedWork); - } else { - try { - commitHookEffectListUnmount( - Layout | HasEffect, - finishedWork, - finishedWork.return - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } + if ((instance._pendingVisibility & OffscreenDetached) === NoFlags$1) { + // The instance is already attached, this is a noop. + return; + } - return; - } + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - case ClassComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + if (root !== null) { + instance._pendingVisibility &= ~OffscreenDetached; + scheduleUpdateOnFiber(root, fiber, SyncLane); + } +} - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); - } - } +function attachSuspenseRetryListeners(finishedWork, wakeables) { + // If this boundary just timed out, then it will have a set of wakeables. + // For each wakeable, attach a listener so that when it resolves, React + // attempts to re-render the boundary in the primary (pre-timeout) state. + var retryCache = getRetryCache(finishedWork); + wakeables.forEach(function (wakeable) { + // Memoize using the boundary fiber to prevent redundant listeners. + var retry = resolveRetryWakeable.bind(null, finishedWork, wakeable); - if (flags & Callback && offscreenSubtreeIsHidden) { - var updateQueue = finishedWork.updateQueue; + if (!retryCache.has(wakeable)) { + retryCache.add(wakeable); - if (updateQueue !== null) { - deferHiddenCallbacks(updateQueue); - } + { + if (isDevToolsPresent) { + if (inProgressLanes !== null && inProgressRoot !== null) { + // If we have pending work still, associate the original updaters with it. + restorePendingUpdaters(inProgressRoot, inProgressLanes); + } else { + throw Error('Expected finished root and lanes to be set. This is a bug in React.'); } - - return; } + } - case HostHoistable: + wakeable.then(retry, retry); + } + }); +} // This function detects when a Suspense boundary goes from visible to hidden. +function commitMutationEffects(root, finishedWork, committedLanes) { + inProgressLanes = committedLanes; + inProgressRoot = root; + setCurrentFiber(finishedWork); + commitMutationEffectsOnFiber(finishedWork, root); + setCurrentFiber(finishedWork); + inProgressLanes = null; + inProgressRoot = null; +} - case HostSingleton: +function recursivelyTraverseMutationEffects(root, parentFiber, lanes) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects hae fired. + var deletions = parentFiber.deletions; - case HostComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); - } - } + try { + commitDeletionEffects(root, parentFiber, childToDelete); + } catch (error) { + captureCommitPhaseError(childToDelete, parentFiber, error); + } + } + } - { - // TODO: ContentReset gets cleared by the children during the commit - // phase. This is a refactor hazard because it means we must read - // flags the flags after `commitReconciliationEffects` has already run; - // the order matters. We should refactor so that ContentReset does not - // rely on mutating the flag during commit. Like by setting a flag - // during the render phase instead. - if (finishedWork.flags & ContentReset) { - var instance = finishedWork.stateNode; + var prevDebugFiber = getCurrentFiber(); - try { - resetTextContent(instance); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } + if (parentFiber.subtreeFlags & MutationMask) { + var child = parentFiber.child; - if (flags & Update) { - var _instance2 = finishedWork.stateNode; - - if (_instance2 != null) { - // Commit the work prepared earlier. - var newProps = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps - // as the newProps. The updatePayload will contain the real change in - // this case. - - var oldProps = - current !== null ? current.memoizedProps : newProps; - var type = finishedWork.type; // TODO: Type the updateQueue to be specific to host components. - - var _updatePayload = finishedWork.updateQueue; - finishedWork.updateQueue = null; - - try { - commitUpdate( - _instance2, - _updatePayload, - type, - oldProps, - newProps, - finishedWork - ); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } - } - } + while (child !== null) { + setCurrentFiber(child); + commitMutationEffectsOnFiber(child, root); + child = child.sibling; + } + } - if (flags & FormReset) { - { - if (finishedWork.type !== "form") { - // Paranoid coding. In case we accidentally start using the - // FormReset bit for something else. - error( - "Unexpected host component type. Expected a form. This is a " + - "bug in React." - ); - } - } - } - } + setCurrentFiber(prevDebugFiber); +} - return; - } +function commitMutationEffectsOnFiber(finishedWork, root, lanes) { + var current = finishedWork.alternate; + var flags = finishedWork.flags; // The effect flag should be checked *after* we refine the type of fiber, + // because the fiber tag is more specific. An exception is any flag related + // to reconciliation, because those can be set on all fiber types. - case HostText: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - if (flags & Update) { - { - if (finishedWork.stateNode === null) { - throw new Error( - "This should have a text node initialized. This error is likely " + - "caused by a bug in React. Please file an issue." - ); - } + if (flags & Update) { + try { + commitHookEffectListUnmount(Insertion | HasEffect, finishedWork, finishedWork.return); + commitHookEffectListMount(Insertion | HasEffect, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } // Layout effects are destroyed during the mutation phase so that all + // destroy functions for all fibers are called before any create functions. + // This prevents sibling component effects from interfering with each other, + // e.g. a destroy function in one component should never override a ref set + // by a create function in another component during the same commit. - var textInstance = finishedWork.stateNode; - var newText = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps - // as the newProps. The updatePayload will contain the real change in - // this case. - var oldText = current !== null ? current.memoizedProps : newText; + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + commitHookEffectListUnmount(Layout | HasEffect, finishedWork, finishedWork.return); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - try { - commitTextUpdate(textInstance, oldText, newText); - } catch (error) { - captureCommitPhaseError( - finishedWork, - finishedWork.return, - error - ); - } + recordLayoutEffectDuration(finishedWork); + } else { + try { + commitHookEffectListUnmount(Layout | HasEffect, finishedWork, finishedWork.return); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } } - - return; } - case HostRoot: { - { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); - } + return; + } - return; - } + case ClassComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - case HostPortal: { - { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); } + } - return; + if (flags & Callback && offscreenSubtreeIsHidden) { + var updateQueue = finishedWork.updateQueue; + + if (updateQueue !== null) { + deferHiddenCallbacks(updateQueue); + } } - case SuspenseComponent: { - recursivelyTraverseMutationEffects(root, finishedWork); - commitReconciliationEffects(finishedWork); // TODO: We should mark a flag on the Suspense fiber itself, rather than - // relying on the Offscreen fiber having a flag also being marked. The - // reason is that this offscreen fiber might not be part of the work-in- - // progress tree! It could have been reused from a previous render. This - // doesn't lead to incorrect behavior because we don't rely on the flag - // check alone; we also compare the states explicitly below. But for - // modeling purposes, we _should_ be able to rely on the flag check alone. - // So this is a bit fragile. - // - // Also, all this logic could/should move to the passive phase so it - // doesn't block paint. + return; + } - var offscreenFiber = finishedWork.child; + case HostHoistable: - if (offscreenFiber.flags & Visibility) { - // Throttle the appearance and disappearance of Suspense fallbacks. - var isShowingFallback = finishedWork.memoizedState !== null; - var wasShowingFallback = - current !== null && current.memoizedState !== null; + case HostSingleton: - if (alwaysThrottleRetries) { - if (isShowingFallback !== wasShowingFallback) { - // A fallback is either appearing or disappearing. - markCommitTimeOfFallback(); - } - } else { - if (isShowingFallback && !wasShowingFallback) { - // Old behavior. Only mark when a fallback appears, not when - // it disappears. - markCommitTimeOfFallback(); - } - } + case HostComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); } + } + + { + // TODO: ContentReset gets cleared by the children during the commit + // phase. This is a refactor hazard because it means we must read + // flags the flags after `commitReconciliationEffects` has already run; + // the order matters. We should refactor so that ContentReset does not + // rely on mutating the flag during commit. Like by setting a flag + // during the render phase instead. + if (finishedWork.flags & ContentReset) { + var instance = finishedWork.stateNode; - if (flags & Update) { try { - commitSuspenseCallback(finishedWork); + resetTextContent(instance); } catch (error) { captureCommitPhaseError(finishedWork, finishedWork.return, error); } + } - var retryQueue = finishedWork.updateQueue; + if (flags & Update) { + var _instance2 = finishedWork.stateNode; - if (retryQueue !== null) { - finishedWork.updateQueue = null; - attachSuspenseRetryListeners(finishedWork, retryQueue); - } - } + if (_instance2 != null) { + // Commit the work prepared earlier. + var newProps = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps + // as the newProps. The updatePayload will contain the real change in + // this case. - return; - } + var oldProps = current !== null ? current.memoizedProps : newProps; + var type = finishedWork.type; // TODO: Type the updateQueue to be specific to host components. - case OffscreenComponent: { - if (flags & Ref) { - if (current !== null) { - safelyDetachRef(current, current.return); + var _updatePayload = finishedWork.updateQueue; + finishedWork.updateQueue = null; + + try { + commitUpdate(_instance2, _updatePayload, type, oldProps, newProps, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } } } - var newState = finishedWork.memoizedState; - var isHidden = newState !== null; - var wasHidden = current !== null && current.memoizedState !== null; + if (flags & FormReset) { - if (finishedWork.mode & ConcurrentMode) { - // Before committing the children, track on the stack whether this - // offscreen subtree was already hidden, so that we don't unmount the - // effects again. - var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; - var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden || isHidden; - offscreenSubtreeWasHidden = - prevOffscreenSubtreeWasHidden || wasHidden; - recursivelyTraverseMutationEffects(root, finishedWork); - offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; - offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; - } else { - recursivelyTraverseMutationEffects(root, finishedWork); + { + if (finishedWork.type !== 'form') { + // Paranoid coding. In case we accidentally start using the + // FormReset bit for something else. + error('Unexpected host component type. Expected a form. This is a ' + 'bug in React.'); + } + } } + } - commitReconciliationEffects(finishedWork); - var offscreenInstance = finishedWork.stateNode; // TODO: Add explicit effect flag to set _current. - - offscreenInstance._current = finishedWork; // Offscreen stores pending changes to visibility in `_pendingVisibility`. This is - // to support batching of `attach` and `detach` calls. - - offscreenInstance._visibility &= ~OffscreenDetached; - offscreenInstance._visibility |= - offscreenInstance._pendingVisibility & OffscreenDetached; - - if (flags & Visibility) { - // Track the current state on the Offscreen instance so we can - // read it during an event - if (isHidden) { - offscreenInstance._visibility &= ~OffscreenVisible; - } else { - offscreenInstance._visibility |= OffscreenVisible; - } + return; + } - if (isHidden) { - var isUpdate = current !== null; - var wasHiddenByAncestorOffscreen = - offscreenSubtreeIsHidden || offscreenSubtreeWasHidden; // Only trigger disapper layout effects if: - // - This is an update, not first mount. - // - This Offscreen was not hidden before. - // - Ancestor Offscreen was not hidden in previous commit. - - if (isUpdate && !wasHidden && !wasHiddenByAncestorOffscreen) { - if ((finishedWork.mode & ConcurrentMode) !== NoMode) { - // Disappear the layout effects of all the children - recursivelyTraverseDisappearLayoutEffects(finishedWork); - } - } - } // Offscreen with manual mode manages visibility manually. + case HostText: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - if (!isOffscreenManual(finishedWork)) { - // TODO: This needs to run whenever there's an insertion or update - // inside a hidden Offscreen tree. - hideOrUnhideAllChildren(finishedWork, isHidden); + if (flags & Update) { + { + if (finishedWork.stateNode === null) { + throw new Error('This should have a text node initialized. This error is likely ' + 'caused by a bug in React. Please file an issue.'); } - } // TODO: Move to passive phase - if (flags & Update) { - var offscreenQueue = finishedWork.updateQueue; + var textInstance = finishedWork.stateNode; + var newText = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps + // as the newProps. The updatePayload will contain the real change in + // this case. - if (offscreenQueue !== null) { - var _retryQueue = offscreenQueue.retryQueue; + var oldText = current !== null ? current.memoizedProps : newText; - if (_retryQueue !== null) { - offscreenQueue.retryQueue = null; - attachSuspenseRetryListeners(finishedWork, _retryQueue); - } + try { + commitTextUpdate(textInstance, oldText, newText); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } } - - return; } - case SuspenseListComponent: { + return; + } + + case HostRoot: + { + { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); - - if (flags & Update) { - var _retryQueue2 = finishedWork.updateQueue; - - if (_retryQueue2 !== null) { - finishedWork.updateQueue = null; - attachSuspenseRetryListeners(finishedWork, _retryQueue2); - } - } - - return; } - case ScopeComponent: { - return; - } + return; + } - default: { + case HostPortal: + { + { recursivelyTraverseMutationEffects(root, finishedWork); commitReconciliationEffects(finishedWork); - return; } - } - } - - function commitReconciliationEffects(finishedWork) { - // Placement effects (insertions, reorders) can be scheduled on any fiber - // type. They needs to happen after the children effects have fired, but - // before the effects on this fiber have fired. - var flags = finishedWork.flags; - if (flags & Placement) { - try { - commitPlacement(finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } // Clear the "placement" from effect tag so that we know that this is - // inserted, before any life-cycles like componentDidMount gets called. - // TODO: findDOMNode doesn't rely on this any more but isMounted does - // and isMounted is deprecated anyway so we should be able to kill this. - - finishedWork.flags &= ~Placement; - } - - if (flags & Hydrating) { - finishedWork.flags &= ~Hydrating; + return; } - } - - function commitLayoutEffects(finishedWork, root, committedLanes) { - inProgressLanes = committedLanes; - inProgressRoot = root; - var current = finishedWork.alternate; - commitLayoutEffectOnFiber(root, current, finishedWork); - inProgressLanes = null; - inProgressRoot = null; - } - function recursivelyTraverseLayoutEffects(root, parentFiber, lanes) { - var prevDebugFiber = getCurrentFiber(); - - if (parentFiber.subtreeFlags & LayoutMask) { - var child = parentFiber.child; + case SuspenseComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); // TODO: We should mark a flag on the Suspense fiber itself, rather than + // relying on the Offscreen fiber having a flag also being marked. The + // reason is that this offscreen fiber might not be part of the work-in- + // progress tree! It could have been reused from a previous render. This + // doesn't lead to incorrect behavior because we don't rely on the flag + // check alone; we also compare the states explicitly below. But for + // modeling purposes, we _should_ be able to rely on the flag check alone. + // So this is a bit fragile. + // + // Also, all this logic could/should move to the passive phase so it + // doesn't block paint. - while (child !== null) { - setCurrentFiber(child); - var current = child.alternate; - commitLayoutEffectOnFiber(root, current, child); - child = child.sibling; - } - } + var offscreenFiber = finishedWork.child; - setCurrentFiber(prevDebugFiber); - } + if (offscreenFiber.flags & Visibility) { + // Throttle the appearance and disappearance of Suspense fallbacks. + var isShowingFallback = finishedWork.memoizedState !== null; + var wasShowingFallback = current !== null && current.memoizedState !== null; - function disappearLayoutEffects(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case MemoComponent: - case SimpleMemoComponent: { - // TODO (Offscreen) Check: flags & LayoutStatic - if (shouldProfile(finishedWork)) { - try { - startLayoutEffectTimer(); - commitHookEffectListUnmount( - Layout, - finishedWork, - finishedWork.return - ); - } finally { - recordLayoutEffectDuration(finishedWork); + if (alwaysThrottleRetries) { + if (isShowingFallback !== wasShowingFallback) { + // A fallback is either appearing or disappearing. + markCommitTimeOfFallback(); } } else { - commitHookEffectListUnmount( - Layout, - finishedWork, - finishedWork.return - ); + if (isShowingFallback && !wasShowingFallback) { + // Old behavior. Only mark when a fallback appears, not when + // it disappears. + markCommitTimeOfFallback(); + } } - - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; } - case ClassComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - var instance = finishedWork.stateNode; - - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount( - finishedWork, - finishedWork.return, - instance - ); + if (flags & Update) { + try { + commitSuspenseCallback(finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; - } - - case HostHoistable: - case HostSingleton: - case HostComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; - } - - case OffscreenComponent: { - // TODO (Offscreen) Check: flags & RefStatic - safelyDetachRef(finishedWork, finishedWork.return); - var isHidden = finishedWork.memoizedState !== null; + var retryQueue = finishedWork.updateQueue; - if (isHidden); - else { - recursivelyTraverseDisappearLayoutEffects(finishedWork); + if (retryQueue !== null) { + finishedWork.updateQueue = null; + attachSuspenseRetryListeners(finishedWork, retryQueue); } - - break; } - default: { - recursivelyTraverseDisappearLayoutEffects(finishedWork); - break; - } + return; } - } - - function recursivelyTraverseDisappearLayoutEffects(parentFiber) { - // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - var child = parentFiber.child; - while (child !== null) { - disappearLayoutEffects(child); - child = child.sibling; - } - } + case OffscreenComponent: + { + if (flags & Ref) { + if (current !== null) { + safelyDetachRef(current, current.return); + } + } - function reappearLayoutEffects( - finishedRoot, - current, - finishedWork, // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - includeWorkInProgressEffects - ) { - // Turn on layout effects in a tree that previously disappeared. - var flags = finishedWork.flags; + var newState = finishedWork.memoizedState; + var isHidden = newState !== null; + var wasHidden = current !== null && current.memoizedState !== null; - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Check flags & LayoutStatic - - commitHookLayoutEffects(finishedWork, Layout); - break; + if (finishedWork.mode & ConcurrentMode) { + // Before committing the children, track on the stack whether this + // offscreen subtree was already hidden, so that we don't unmount the + // effects again. + var prevOffscreenSubtreeIsHidden = offscreenSubtreeIsHidden; + var prevOffscreenSubtreeWasHidden = offscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden || isHidden; + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden || wasHidden; + recursivelyTraverseMutationEffects(root, finishedWork); + offscreenSubtreeWasHidden = prevOffscreenSubtreeWasHidden; + offscreenSubtreeIsHidden = prevOffscreenSubtreeIsHidden; + } else { + recursivelyTraverseMutationEffects(root, finishedWork); } - case ClassComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Check for LayoutStatic flag + commitReconciliationEffects(finishedWork); + var offscreenInstance = finishedWork.stateNode; // TODO: Add explicit effect flag to set _current. + + offscreenInstance._current = finishedWork; // Offscreen stores pending changes to visibility in `_pendingVisibility`. This is + // to support batching of `attach` and `detach` calls. - var instance = finishedWork.stateNode; + offscreenInstance._visibility &= ~OffscreenDetached; + offscreenInstance._visibility |= offscreenInstance._pendingVisibility & OffscreenDetached; - if (typeof instance.componentDidMount === "function") { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); + if (flags & Visibility) { + // Track the current state on the Offscreen instance so we can + // read it during an event + if (isHidden) { + offscreenInstance._visibility &= ~OffscreenVisible; + } else { + offscreenInstance._visibility |= OffscreenVisible; + } + + if (isHidden) { + var isUpdate = current !== null; + var wasHiddenByAncestorOffscreen = offscreenSubtreeIsHidden || offscreenSubtreeWasHidden; // Only trigger disapper layout effects if: + // - This is an update, not first mount. + // - This Offscreen was not hidden before. + // - Ancestor Offscreen was not hidden in previous commit. + + if (isUpdate && !wasHidden && !wasHiddenByAncestorOffscreen) { + if ((finishedWork.mode & ConcurrentMode) !== NoMode) { + // Disappear the layout effects of all the children + recursivelyTraverseDisappearLayoutEffects(finishedWork); + } } - } // Commit any callbacks that would have fired while the component - // was hidden. + } // Offscreen with manual mode manages visibility manually. - var updateQueue = finishedWork.updateQueue; - if (updateQueue !== null) { - commitHiddenCallbacks(updateQueue, instance); - } // If this is newly finished work, check for setState callbacks + if (!isOffscreenManual(finishedWork)) { + // TODO: This needs to run whenever there's an insertion or update + // inside a hidden Offscreen tree. + hideOrUnhideAllChildren(finishedWork, isHidden); + } + } // TODO: Move to passive phase - if (includeWorkInProgressEffects && flags & Callback) { - commitClassCallbacks(finishedWork); - } // TODO: Check flags & RefStatic - safelyAttachRef(finishedWork, finishedWork.return); - break; - } - // Unlike commitLayoutEffectsOnFiber, we don't need to handle HostRoot - // because this function only visits nodes that are inside an - // Offscreen fiber. - // case HostRoot: { - // ... - // } + if (flags & Update) { + var offscreenQueue = finishedWork.updateQueue; - case HostHoistable: - case HostSingleton: - case HostComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // Renderers may schedule work to be done after host components are mounted - // (eg DOM renderer may schedule auto-focus for inputs and form controls). - // These effects should only be committed when components are first mounted, - // aka when there is no current/alternate. - - if ( - includeWorkInProgressEffects && - current === null && - flags & Update - ) { - commitHostComponentMount(finishedWork); - } // TODO: Check flags & Ref + if (offscreenQueue !== null) { + var _retryQueue = offscreenQueue.retryQueue; - safelyAttachRef(finishedWork, finishedWork.return); - break; + if (_retryQueue !== null) { + offscreenQueue.retryQueue = null; + attachSuspenseRetryListeners(finishedWork, _retryQueue); + } + } } - case Profiler: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Figure out how Profiler updates should work with Offscreen - - if (includeWorkInProgressEffects && flags & Update) { - commitProfilerUpdate(finishedWork, current); - } + return; + } - break; - } + case SuspenseListComponent: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); - case SuspenseComponent: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); // TODO: Figure out how Suspense hydration callbacks should work + if (flags & Update) { + var _retryQueue2 = finishedWork.updateQueue; - break; + if (_retryQueue2 !== null) { + finishedWork.updateQueue = null; + attachSuspenseRetryListeners(finishedWork, _retryQueue2); + } } - case OffscreenComponent: { - var offscreenState = finishedWork.memoizedState; - var isHidden = offscreenState !== null; + return; + } - if (isHidden); - else { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - } // TODO: Check flags & Ref + case ScopeComponent: + { - safelyAttachRef(finishedWork, finishedWork.return); - break; - } + return; + } - default: { - recursivelyTraverseReappearLayoutEffects( - finishedRoot, - finishedWork, - includeWorkInProgressEffects - ); - break; - } + default: + { + recursivelyTraverseMutationEffects(root, finishedWork); + commitReconciliationEffects(finishedWork); + return; } - } + } +} + +function commitReconciliationEffects(finishedWork) { + // Placement effects (insertions, reorders) can be scheduled on any fiber + // type. They needs to happen after the children effects have fired, but + // before the effects on this fiber have fired. + var flags = finishedWork.flags; + + if (flags & Placement) { + try { + commitPlacement(finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } // Clear the "placement" from effect tag so that we know that this is + // inserted, before any life-cycles like componentDidMount gets called. + // TODO: findDOMNode doesn't rely on this any more but isMounted does + // and isMounted is deprecated anyway so we should be able to kill this. + + + finishedWork.flags &= ~Placement; + } + + if (flags & Hydrating) { + finishedWork.flags &= ~Hydrating; + } +} - function recursivelyTraverseReappearLayoutEffects( - finishedRoot, - parentFiber, - includeWorkInProgressEffects - ) { - // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - var childShouldIncludeWorkInProgressEffects = - includeWorkInProgressEffects && - (parentFiber.subtreeFlags & LayoutMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) +function commitLayoutEffects(finishedWork, root, committedLanes) { + inProgressLanes = committedLanes; + inProgressRoot = root; + var current = finishedWork.alternate; + commitLayoutEffectOnFiber(root, current, finishedWork); + inProgressLanes = null; + inProgressRoot = null; +} - var prevDebugFiber = getCurrentFiber(); - var child = parentFiber.child; +function recursivelyTraverseLayoutEffects(root, parentFiber, lanes) { + var prevDebugFiber = getCurrentFiber(); - while (child !== null) { - var current = child.alternate; - reappearLayoutEffects( - finishedRoot, - current, - child, - childShouldIncludeWorkInProgressEffects - ); - child = child.sibling; - } + if (parentFiber.subtreeFlags & LayoutMask) { + var child = parentFiber.child; - setCurrentFiber(prevDebugFiber); + while (child !== null) { + setCurrentFiber(child); + var current = child.alternate; + commitLayoutEffectOnFiber(root, current, child); + child = child.sibling; } + } - function commitHookPassiveMountEffects(finishedWork, hookFlags) { - if (shouldProfile(finishedWork)) { - startPassiveEffectTimer(); + setCurrentFiber(prevDebugFiber); +} - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); +function disappearLayoutEffects(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case MemoComponent: + case SimpleMemoComponent: + { + // TODO (Offscreen) Check: flags & LayoutStatic + if (shouldProfile(finishedWork)) { + try { + startLayoutEffectTimer(); + commitHookEffectListUnmount(Layout, finishedWork, finishedWork.return); + } finally { + recordLayoutEffectDuration(finishedWork); + } + } else { + commitHookEffectListUnmount(Layout, finishedWork, finishedWork.return); } - recordPassiveEffectDuration(finishedWork); - } else { - try { - commitHookEffectListMount(hookFlags, finishedWork); - } catch (error) { - captureCommitPhaseError(finishedWork, finishedWork.return, error); - } + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } - } - function commitOffscreenPassiveMountEffects( - current, - finishedWork, - instance - ) { + case ClassComponent: { - var previousCache = null; - - if ( - current !== null && - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - previousCache = current.memoizedState.cachePool.pool; - } - - var nextCache = null; - - if ( - finishedWork.memoizedState !== null && - finishedWork.memoizedState.cachePool !== null - ) { - nextCache = finishedWork.memoizedState.cachePool.pool; - } // Retain/release the cache used for pending (suspended) nodes. - // Note that this is only reached in the non-suspended/visible case: - // when the content is suspended/hidden, the retain/release occurs - // via the parent Suspense component (see case above). - - if (nextCache !== previousCache) { - if (nextCache != null) { - retainCache(nextCache); - } + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + var instance = finishedWork.stateNode; - if (previousCache != null) { - releaseCache(previousCache); - } + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(finishedWork, finishedWork.return, instance); } + + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; + } + + case HostHoistable: + case HostSingleton: + case HostComponent: + { + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } - } - function commitCachePassiveMountEffect(current, finishedWork) { + case OffscreenComponent: { - var previousCache = null; + // TODO (Offscreen) Check: flags & RefStatic + safelyDetachRef(finishedWork, finishedWork.return); + var isHidden = finishedWork.memoizedState !== null; - if (finishedWork.alternate !== null) { - previousCache = finishedWork.alternate.memoizedState.cache; + if (isHidden) ; else { + recursivelyTraverseDisappearLayoutEffects(finishedWork); } - var nextCache = finishedWork.memoizedState.cache; // Retain/release the cache. In theory the cache component - // could be "borrowing" a cache instance owned by some parent, - // in which case we could avoid retaining/releasing. But it - // is non-trivial to determine when that is the case, so we - // always retain/release. - - if (nextCache !== previousCache) { - retainCache(nextCache); + break; + } - if (previousCache != null) { - releaseCache(previousCache); - } - } + default: + { + recursivelyTraverseDisappearLayoutEffects(finishedWork); + break; } - } + } +} - function commitPassiveMountEffects( - root, - finishedWork, - committedLanes, - committedTransitions - ) { - setCurrentFiber(finishedWork); - commitPassiveMountOnFiber( - root, - finishedWork, - committedLanes, - committedTransitions - ); - resetCurrentFiber(); - } +function recursivelyTraverseDisappearLayoutEffects(parentFiber) { + // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) + var child = parentFiber.child; - function recursivelyTraversePassiveMountEffects( - root, - parentFiber, - committedLanes, - committedTransitions - ) { - var prevDebugFiber = getCurrentFiber(); + while (child !== null) { + disappearLayoutEffects(child); + child = child.sibling; + } +} - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; +function reappearLayoutEffects(finishedRoot, current, finishedWork, // This function visits both newly finished work and nodes that were re-used +// from a previously committed tree. We cannot check non-static flags if the +// node was reused. +includeWorkInProgressEffects) { + // Turn on layout effects in a tree that previously disappeared. + var flags = finishedWork.flags; - while (child !== null) { - setCurrentFiber(child); - commitPassiveMountOnFiber( - root, - child, - committedLanes, - committedTransitions - ); - child = child.sibling; - } + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Check flags & LayoutStatic + + commitHookLayoutEffects(finishedWork, Layout); + break; } - setCurrentFiber(prevDebugFiber); - } + case ClassComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Check for LayoutStatic flag - function commitPassiveMountOnFiber( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ) { - // When updating this function, also update reconnectPassiveEffects, which does - // most of the same things when an offscreen tree goes from hidden -> visible, - // or when toggling effects inside a hidden tree. - var flags = finishedWork.flags; + var instance = finishedWork.stateNode; - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - - if (flags & Passive$1) { - commitHookPassiveMountEffects(finishedWork, Passive | HasEffect); + if (typeof instance.componentDidMount === 'function') { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); } + } // Commit any callbacks that would have fired while the component + // was hidden. - break; - } - case HostRoot: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); + var updateQueue = finishedWork.updateQueue; - if (flags & Passive$1) { - { - var previousCache = null; + if (updateQueue !== null) { + commitHiddenCallbacks(updateQueue, instance); + } // If this is newly finished work, check for setState callbacks - if (finishedWork.alternate !== null) { - previousCache = finishedWork.alternate.memoizedState.cache; - } - var nextCache = finishedWork.memoizedState.cache; // Retain/release the root cache. - // Note that on initial mount, previousCache and nextCache will be the same - // and this retain won't occur. To counter this, we instead retain the HostRoot's - // initial cache when creating the root itself (see createFiberRoot() in - // ReactFiberRoot.js). Subsequent updates that change the cache are reflected - // here, such that previous/next caches are retained correctly. + if (includeWorkInProgressEffects && flags & Callback) { + commitClassCallbacks(finishedWork); + } // TODO: Check flags & RefStatic - if (nextCache !== previousCache) { - retainCache(nextCache); - if (previousCache != null) { - releaseCache(previousCache); - } - } - } - } + safelyAttachRef(finishedWork, finishedWork.return); + break; + } + // Unlike commitLayoutEffectsOnFiber, we don't need to handle HostRoot + // because this function only visits nodes that are inside an + // Offscreen fiber. + // case HostRoot: { + // ... + // } - break; - } + case HostHoistable: + case HostSingleton: + case HostComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // Renderers may schedule work to be done after host components are mounted + // (eg DOM renderer may schedule auto-focus for inputs and form controls). + // These effects should only be committed when components are first mounted, + // aka when there is no current/alternate. - case LegacyHiddenComponent: { - break; - } + if (includeWorkInProgressEffects && current === null && flags & Update) { + commitHostComponentMount(finishedWork); + } // TODO: Check flags & Ref - case OffscreenComponent: { - // TODO: Pass `current` as argument to this function - var _instance3 = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; - if (isHidden) { - if (_instance3._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } else { - if (finishedWork.mode & ConcurrentMode) { - // The effects are currently disconnected. Since the tree is hidden, - // don't connect them. This also applies to the initial render. - { - // "Atomic" effects are ones that need to fire on every commit, - // even during pre-rendering. An example is updating the reference - // count on cache instances. - recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - finishedWork - ); - } - } else { - // Legacy Mode: Fire the effects even if the tree is hidden. - _instance3._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } - } - } else { - // Tree is visible - if (_instance3._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - } else { - // The effects are currently disconnected. Reconnect them, while also - // firing effects inside newly mounted trees. This also applies to - // the initial render. - _instance3._visibility |= OffscreenPassiveEffectsConnected; - var includeWorkInProgressEffects = - (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } - } + safelyAttachRef(finishedWork, finishedWork.return); + break; + } - if (flags & Passive$1) { - var _current = finishedWork.alternate; - commitOffscreenPassiveMountEffects(_current, finishedWork); - } + case Profiler: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Figure out how Profiler updates should work with Offscreen - break; + if (includeWorkInProgressEffects && flags & Update) { + commitProfilerUpdate(finishedWork, current); } - case CacheComponent: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); + break; + } - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current2 = finishedWork.alternate; - commitCachePassiveMountEffect(_current2, finishedWork); - } + case SuspenseComponent: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); // TODO: Figure out how Suspense hydration callbacks should work - break; - } + break; + } - case TracingMarkerComponent: + case OffscreenComponent: + { + var offscreenState = finishedWork.memoizedState; + var isHidden = offscreenState !== null; - default: { - recursivelyTraversePassiveMountEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ); - break; - } - } - } + if (isHidden) ; else { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + } // TODO: Check flags & Ref - function recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - parentFiber, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ) { - // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - var childShouldIncludeWorkInProgressEffects = - includeWorkInProgressEffects && - (parentFiber.subtreeFlags & PassiveMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - var prevDebugFiber = getCurrentFiber(); - var child = parentFiber.child; + safelyAttachRef(finishedWork, finishedWork.return); + break; + } - while (child !== null) { - reconnectPassiveEffects( - finishedRoot, - child, - committedLanes, - committedTransitions, - childShouldIncludeWorkInProgressEffects - ); - child = child.sibling; + default: + { + recursivelyTraverseReappearLayoutEffects(finishedRoot, finishedWork, includeWorkInProgressEffects); + break; } + } +} - setCurrentFiber(prevDebugFiber); - } +function recursivelyTraverseReappearLayoutEffects(finishedRoot, parentFiber, includeWorkInProgressEffects) { + // This function visits both newly finished work and nodes that were re-used + // from a previously committed tree. We cannot check non-static flags if the + // node was reused. + var childShouldIncludeWorkInProgressEffects = includeWorkInProgressEffects && (parentFiber.subtreeFlags & LayoutMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - function reconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, // This function visits both newly finished work and nodes that were re-used - // from a previously committed tree. We cannot check non-static flags if the - // node was reused. - includeWorkInProgressEffects - ) { - var flags = finishedWork.flags; + var prevDebugFiber = getCurrentFiber(); + var child = parentFiber.child; - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); // TODO: Check for PassiveStatic flag - - commitHookPassiveMountEffects(finishedWork, Passive); - break; - } - // Unlike commitPassiveMountOnFiber, we don't need to handle HostRoot - // because this function only visits nodes that are inside an - // Offscreen fiber. - // case HostRoot: { - // ... - // } + while (child !== null) { + var current = child.alternate; + reappearLayoutEffects(finishedRoot, current, child, childShouldIncludeWorkInProgressEffects); + child = child.sibling; + } - case LegacyHiddenComponent: { - break; - } + setCurrentFiber(prevDebugFiber); +} - case OffscreenComponent: { - var _instance4 = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; +function commitHookPassiveMountEffects(finishedWork, hookFlags) { + if (shouldProfile(finishedWork)) { + startPassiveEffectTimer(); - if (isHidden) { - if (_instance4._visibility & OffscreenPassiveEffectsConnected) { - // The effects are currently connected. Update them. - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } else { - if (finishedWork.mode & ConcurrentMode) { - // The effects are currently disconnected. Since the tree is hidden, - // don't connect them. This also applies to the initial render. - { - // "Atomic" effects are ones that need to fire on every commit, - // even during pre-rendering. An example is updating the reference - // count on cache instances. - recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - finishedWork - ); - } - } else { - // Legacy Mode: Fire the effects even if the tree is hidden. - _instance4._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } - } - } else { - // Tree is visible - // Since we're already inside a reconnecting tree, it doesn't matter - // whether the effects are currently connected. In either case, we'll - // continue traversing the tree and firing all the effects. - // - // We do need to set the "connected" flag on the instance, though. - _instance4._visibility |= OffscreenPassiveEffectsConnected; - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - } + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } - if (includeWorkInProgressEffects && flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current3 = finishedWork.alternate; - commitOffscreenPassiveMountEffects(_current3, finishedWork); - } + recordPassiveEffectDuration(finishedWork); + } else { + try { + commitHookEffectListMount(hookFlags, finishedWork); + } catch (error) { + captureCommitPhaseError(finishedWork, finishedWork.return, error); + } + } +} - break; - } +function commitOffscreenPassiveMountEffects(current, finishedWork, instance) { + { + var previousCache = null; - case CacheComponent: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); + if (current !== null && current.memoizedState !== null && current.memoizedState.cachePool !== null) { + previousCache = current.memoizedState.cachePool.pool; + } - if (includeWorkInProgressEffects && flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current4 = finishedWork.alternate; - commitCachePassiveMountEffect(_current4, finishedWork); - } + var nextCache = null; - break; - } + if (finishedWork.memoizedState !== null && finishedWork.memoizedState.cachePool !== null) { + nextCache = finishedWork.memoizedState.cachePool.pool; + } // Retain/release the cache used for pending (suspended) nodes. + // Note that this is only reached in the non-suspended/visible case: + // when the content is suspended/hidden, the retain/release occurs + // via the parent Suspense component (see case above). - case TracingMarkerComponent: - default: { - recursivelyTraverseReconnectPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions, - includeWorkInProgressEffects - ); - break; - } + if (nextCache !== previousCache) { + if (nextCache != null) { + retainCache(nextCache); } - } - - function recursivelyTraverseAtomicPassiveEffects( - finishedRoot, - parentFiber, - committedLanes, - committedTransitions - ) { - // "Atomic" effects are ones that need to fire on every commit, even during - // pre-rendering. We call this function when traversing a hidden tree whose - // regular effects are currently disconnected. - var prevDebugFiber = getCurrentFiber(); // TODO: Add special flag for atomic effects - - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; - while (child !== null) { - setCurrentFiber(child); - commitAtomicPassiveEffects(finishedRoot, child); - child = child.sibling; - } + if (previousCache != null) { + releaseCache(previousCache); } - - setCurrentFiber(prevDebugFiber); } + } +} - function commitAtomicPassiveEffects( - finishedRoot, - finishedWork, - committedLanes, - committedTransitions - ) { - // "Atomic" effects are ones that need to fire on every commit, even during - // pre-rendering. We call this function when traversing a hidden tree whose - // regular effects are currently disconnected. - var flags = finishedWork.flags; +function commitCachePassiveMountEffect(current, finishedWork) { + { + var previousCache = null; - switch (finishedWork.tag) { - case OffscreenComponent: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + if (finishedWork.alternate !== null) { + previousCache = finishedWork.alternate.memoizedState.cache; + } - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var current = finishedWork.alternate; - commitOffscreenPassiveMountEffects(current, finishedWork); - } + var nextCache = finishedWork.memoizedState.cache; // Retain/release the cache. In theory the cache component + // could be "borrowing" a cache instance owned by some parent, + // in which case we could avoid retaining/releasing. But it + // is non-trivial to determine when that is the case, so we + // always retain/release. - break; - } + if (nextCache !== previousCache) { + retainCache(nextCache); - case CacheComponent: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + if (previousCache != null) { + releaseCache(previousCache); + } + } + } +} - if (flags & Passive$1) { - // TODO: Pass `current` as argument to this function - var _current5 = finishedWork.alternate; - commitCachePassiveMountEffect(_current5, finishedWork); - } +function commitPassiveMountEffects(root, finishedWork, committedLanes, committedTransitions) { + setCurrentFiber(finishedWork); + commitPassiveMountOnFiber(root, finishedWork, committedLanes, committedTransitions); + resetCurrentFiber(); +} - break; - } +function recursivelyTraversePassiveMountEffects(root, parentFiber, committedLanes, committedTransitions) { + var prevDebugFiber = getCurrentFiber(); - default: { - recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - break; - } - } + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; + + while (child !== null) { + setCurrentFiber(child); + commitPassiveMountOnFiber(root, child, committedLanes, committedTransitions); + child = child.sibling; } + } - function commitPassiveUnmountEffects(finishedWork) { - setCurrentFiber(finishedWork); - commitPassiveUnmountOnFiber(finishedWork); - resetCurrentFiber(); - } // If we're inside a brand new tree, or a tree that was already visible, then we - // should only suspend host components that have a ShouldSuspendCommit flag. - // Components without it haven't changed since the last commit, so we can skip - // over those. - // - // When we enter a tree that is being revealed (going from hidden -> visible), - // we need to suspend _any_ component that _may_ suspend. Even if they're - // already in the "current" tree. Because their visibility has changed, the - // browser may not have prerendered them yet. So we check the MaySuspendCommit - // flag instead. + setCurrentFiber(prevDebugFiber); +} - var suspenseyCommitFlag = ShouldSuspendCommit; - function accumulateSuspenseyCommit(finishedWork) { - accumulateSuspenseyCommitOnFiber(finishedWork); - } +function commitPassiveMountOnFiber(finishedRoot, finishedWork, committedLanes, committedTransitions) { + // When updating this function, also update reconnectPassiveEffects, which does + // most of the same things when an offscreen tree goes from hidden -> visible, + // or when toggling effects inside a hidden tree. + var flags = finishedWork.flags; - function recursivelyAccumulateSuspenseyCommit(parentFiber) { - if (parentFiber.subtreeFlags & suspenseyCommitFlag) { - var child = parentFiber.child; + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); - while (child !== null) { - accumulateSuspenseyCommitOnFiber(child); - child = child.sibling; + if (flags & Passive$1) { + commitHookPassiveMountEffects(finishedWork, Passive | HasEffect); } + + break; } - } - function accumulateSuspenseyCommitOnFiber(fiber) { - switch (fiber.tag) { - case HostHoistable: { - recursivelyAccumulateSuspenseyCommit(fiber); + case HostRoot: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + + if (flags & Passive$1) { + { + var previousCache = null; - if (fiber.flags & suspenseyCommitFlag) { - if (fiber.memoizedState !== null) { - suspendResource(); + if (finishedWork.alternate !== null) { + previousCache = finishedWork.alternate.memoizedState.cache; } - } - break; - } + var nextCache = finishedWork.memoizedState.cache; // Retain/release the root cache. + // Note that on initial mount, previousCache and nextCache will be the same + // and this retain won't occur. To counter this, we instead retain the HostRoot's + // initial cache when creating the root itself (see createFiberRoot() in + // ReactFiberRoot.js). Subsequent updates that change the cache are reflected + // here, such that previous/next caches are retained correctly. - case HostComponent: { - recursivelyAccumulateSuspenseyCommit(fiber); + if (nextCache !== previousCache) { + retainCache(nextCache); - break; + if (previousCache != null) { + releaseCache(previousCache); + } + } + } } - case HostRoot: - case HostPortal: { - { - recursivelyAccumulateSuspenseyCommit(fiber); - } + break; + } - break; - } + case LegacyHiddenComponent: + { - case OffscreenComponent: { - var isHidden = fiber.memoizedState !== null; + break; + } - if (isHidden); - else { - var current = fiber.alternate; - var wasHidden = current !== null && current.memoizedState !== null; + case OffscreenComponent: + { + // TODO: Pass `current` as argument to this function + var _instance3 = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; - if (wasHidden) { - // This tree is being revealed. Visit all newly visible suspensey - // instances, even if they're in the current tree. - var prevFlags = suspenseyCommitFlag; - suspenseyCommitFlag = MaySuspendCommit; - recursivelyAccumulateSuspenseyCommit(fiber); - suspenseyCommitFlag = prevFlags; + if (isHidden) { + if (_instance3._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + } else { + if (finishedWork.mode & ConcurrentMode) { + // The effects are currently disconnected. Since the tree is hidden, + // don't connect them. This also applies to the initial render. + { + // "Atomic" effects are ones that need to fire on every commit, + // even during pre-rendering. An example is updating the reference + // count on cache instances. + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + } } else { - recursivelyAccumulateSuspenseyCommit(fiber); + // Legacy Mode: Fire the effects even if the tree is hidden. + _instance3._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); } } - - break; + } else { + // Tree is visible + if (_instance3._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + } else { + // The effects are currently disconnected. Reconnect them, while also + // firing effects inside newly mounted trees. This also applies to + // the initial render. + _instance3._visibility |= OffscreenPassiveEffectsConnected; + var includeWorkInProgressEffects = (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + } } - default: { - recursivelyAccumulateSuspenseyCommit(fiber); + if (flags & Passive$1) { + var _current = finishedWork.alternate; + commitOffscreenPassiveMountEffects(_current, finishedWork); } - } - } - - function detachAlternateSiblings(parentFiber) { - // A fiber was deleted from this parent fiber, but it's still part of the - // previous (alternate) parent fiber's list of children. Because children - // are a linked list, an earlier sibling that's still alive will be - // connected to the deleted fiber via its `alternate`: - // - // live fiber --alternate--> previous live fiber --sibling--> deleted - // fiber - // - // We can't disconnect `alternate` on nodes that haven't been deleted yet, - // but we can disconnect the `sibling` and `child` pointers. - var previousFiber = parentFiber.alternate; - if (previousFiber !== null) { - var detachedChild = previousFiber.child; - - if (detachedChild !== null) { - previousFiber.child = null; + break; + } - do { - // $FlowFixMe[incompatible-use] found when upgrading Flow - var detachedSibling = detachedChild.sibling; // $FlowFixMe[incompatible-use] found when upgrading Flow + case CacheComponent: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); - detachedChild.sibling = null; - detachedChild = detachedSibling; - } while (detachedChild !== null); + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current2 = finishedWork.alternate; + commitCachePassiveMountEffect(_current2, finishedWork); } + + break; } - } - function commitHookPassiveUnmountEffects( - finishedWork, - nearestMountedAncestor, - hookFlags - ) { - if (shouldProfile(finishedWork)) { - startPassiveEffectTimer(); - commitHookEffectListUnmount( - hookFlags, - finishedWork, - nearestMountedAncestor - ); - recordPassiveEffectDuration(finishedWork); - } else { - commitHookEffectListUnmount( - hookFlags, - finishedWork, - nearestMountedAncestor - ); + case TracingMarkerComponent: + + default: + { + recursivelyTraversePassiveMountEffects(finishedRoot, finishedWork, committedLanes, committedTransitions); + break; } - } + } +} - function recursivelyTraversePassiveUnmountEffects(parentFiber) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects have fired. - var deletions = parentFiber.deletions; +function recursivelyTraverseReconnectPassiveEffects(finishedRoot, parentFiber, committedLanes, committedTransitions, includeWorkInProgressEffects) { + // This function visits both newly finished work and nodes that were re-used + // from a previously committed tree. We cannot check non-static flags if the + // node was reused. + var childShouldIncludeWorkInProgressEffects = includeWorkInProgressEffects && (parentFiber.subtreeFlags & PassiveMask) !== NoFlags$1; // TODO (Offscreen) Check: flags & (RefStatic | LayoutStatic) - if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; // TODO: Convert this to use recursion + var prevDebugFiber = getCurrentFiber(); + var child = parentFiber.child; - nextEffect = childToDelete; - commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - childToDelete, - parentFiber - ); - } - } + while (child !== null) { + reconnectPassiveEffects(finishedRoot, child, committedLanes, committedTransitions, childShouldIncludeWorkInProgressEffects); + child = child.sibling; + } - detachAlternateSiblings(parentFiber); - } + setCurrentFiber(prevDebugFiber); +} - var prevDebugFiber = getCurrentFiber(); // TODO: Split PassiveMask into separate masks for mount and unmount? +function reconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, // This function visits both newly finished work and nodes that were re-used +// from a previously committed tree. We cannot check non-static flags if the +// node was reused. +includeWorkInProgressEffects) { + var flags = finishedWork.flags; - if (parentFiber.subtreeFlags & PassiveMask) { - var child = parentFiber.child; + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); // TODO: Check for PassiveStatic flag - while (child !== null) { - setCurrentFiber(child); - commitPassiveUnmountOnFiber(child); - child = child.sibling; - } + commitHookPassiveMountEffects(finishedWork, Passive); + break; } + // Unlike commitPassiveMountOnFiber, we don't need to handle HostRoot + // because this function only visits nodes that are inside an + // Offscreen fiber. + // case HostRoot: { + // ... + // } - setCurrentFiber(prevDebugFiber); - } - - function commitPassiveUnmountOnFiber(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - recursivelyTraversePassiveUnmountEffects(finishedWork); + case LegacyHiddenComponent: + { - if (finishedWork.flags & Passive$1) { - commitHookPassiveUnmountEffects( - finishedWork, - finishedWork.return, - Passive | HasEffect - ); - } + break; + } - break; - } + case OffscreenComponent: + { + var _instance4 = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; - case OffscreenComponent: { - var instance = finishedWork.stateNode; - var nextState = finishedWork.memoizedState; - var isHidden = nextState !== null; - - if ( - isHidden && - instance._visibility & OffscreenPassiveEffectsConnected && // For backwards compatibility, don't unmount when a tree suspends. In - // the future we may change this to unmount after a delay. - (finishedWork.return === null || - finishedWork.return.tag !== SuspenseComponent) - ) { - // The effects are currently connected. Disconnect them. - // TODO: Add option or heuristic to delay before disconnecting the - // effects. Then if the tree reappears before the delay has elapsed, we - // can skip toggling the effects entirely. - instance._visibility &= ~OffscreenPassiveEffectsConnected; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); + if (isHidden) { + if (_instance4._visibility & OffscreenPassiveEffectsConnected) { + // The effects are currently connected. Update them. + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); } else { - recursivelyTraversePassiveUnmountEffects(finishedWork); + if (finishedWork.mode & ConcurrentMode) { + // The effects are currently disconnected. Since the tree is hidden, + // don't connect them. This also applies to the initial render. + { + // "Atomic" effects are ones that need to fire on every commit, + // even during pre-rendering. An example is updating the reference + // count on cache instances. + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + } + } else { + // Legacy Mode: Fire the effects even if the tree is hidden. + _instance4._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + } } - - break; + } else { + // Tree is visible + // Since we're already inside a reconnecting tree, it doesn't matter + // whether the effects are currently connected. In either case, we'll + // continue traversing the tree and firing all the effects. + // + // We do need to set the "connected" flag on the instance, though. + _instance4._visibility |= OffscreenPassiveEffectsConnected; + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); } - default: { - recursivelyTraversePassiveUnmountEffects(finishedWork); - break; + if (includeWorkInProgressEffects && flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current3 = finishedWork.alternate; + commitOffscreenPassiveMountEffects(_current3, finishedWork); } - } - } - function recursivelyTraverseDisconnectPassiveEffects(parentFiber) { - // Deletions effects can be scheduled on any fiber type. They need to happen - // before the children effects have fired. - var deletions = parentFiber.deletions; + break; + } - if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { - if (deletions !== null) { - for (var i = 0; i < deletions.length; i++) { - var childToDelete = deletions[i]; // TODO: Convert this to use recursion + case CacheComponent: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); - nextEffect = childToDelete; - commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - childToDelete, - parentFiber - ); - } + if (includeWorkInProgressEffects && flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current4 = finishedWork.alternate; + commitCachePassiveMountEffect(_current4, finishedWork); } - detachAlternateSiblings(parentFiber); + break; } - var prevDebugFiber = getCurrentFiber(); // TODO: Check PassiveStatic flag + case TracingMarkerComponent: - var child = parentFiber.child; - - while (child !== null) { - setCurrentFiber(child); - disconnectPassiveEffect(child); - child = child.sibling; + default: + { + recursivelyTraverseReconnectPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions, includeWorkInProgressEffects); + break; } + } +} - setCurrentFiber(prevDebugFiber); - } +function recursivelyTraverseAtomicPassiveEffects(finishedRoot, parentFiber, committedLanes, committedTransitions) { + // "Atomic" effects are ones that need to fire on every commit, even during + // pre-rendering. We call this function when traversing a hidden tree whose + // regular effects are currently disconnected. + var prevDebugFiber = getCurrentFiber(); // TODO: Add special flag for atomic effects - function disconnectPassiveEffect(finishedWork) { - switch (finishedWork.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - // TODO: Check PassiveStatic flag - commitHookPassiveUnmountEffects( - finishedWork, - finishedWork.return, - Passive - ); // When disconnecting passive effects, we fire the effects in the same - // order as during a deletiong: parent before child + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - break; - } + while (child !== null) { + setCurrentFiber(child); + commitAtomicPassiveEffects(finishedRoot, child); + child = child.sibling; + } + } - case OffscreenComponent: { - var instance = finishedWork.stateNode; + setCurrentFiber(prevDebugFiber); +} - if (instance._visibility & OffscreenPassiveEffectsConnected) { - instance._visibility &= ~OffscreenPassiveEffectsConnected; - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - } +function commitAtomicPassiveEffects(finishedRoot, finishedWork, committedLanes, committedTransitions) { + // "Atomic" effects are ones that need to fire on every commit, even during + // pre-rendering. We call this function when traversing a hidden tree whose + // regular effects are currently disconnected. + var flags = finishedWork.flags; - break; - } + switch (finishedWork.tag) { + case OffscreenComponent: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - default: { - recursivelyTraverseDisconnectPassiveEffects(finishedWork); - break; + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var current = finishedWork.alternate; + commitOffscreenPassiveMountEffects(current, finishedWork); } - } - } - function commitPassiveUnmountEffectsInsideOfDeletedTree_begin( - deletedSubtreeRoot, - nearestMountedAncestor - ) { - while (nextEffect !== null) { - var fiber = nextEffect; // Deletion effects fire in parent -> child order - // TODO: Check if fiber has a PassiveStatic flag + break; + } - setCurrentFiber(fiber); - commitPassiveUnmountInsideDeletedTreeOnFiber( - fiber, - nearestMountedAncestor - ); - resetCurrentFiber(); - var child = fiber.child; // TODO: Only traverse subtree if it has a PassiveStatic flag. + case CacheComponent: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); - if (child !== null) { - child.return = fiber; - nextEffect = child; - } else { - commitPassiveUnmountEffectsInsideOfDeletedTree_complete( - deletedSubtreeRoot - ); + if (flags & Passive$1) { + // TODO: Pass `current` as argument to this function + var _current5 = finishedWork.alternate; + commitCachePassiveMountEffect(_current5, finishedWork); } - } - } - function commitPassiveUnmountEffectsInsideOfDeletedTree_complete( - deletedSubtreeRoot - ) { - while (nextEffect !== null) { - var fiber = nextEffect; - var sibling = fiber.sibling; - var returnFiber = fiber.return; // Recursively traverse the entire deleted tree and clean up fiber fields. - // This is more aggressive than ideal, and the long term goal is to only - // have to detach the deleted tree at the root. + break; + } - detachFiberAfterEffects(fiber); + default: + { + recursivelyTraverseAtomicPassiveEffects(finishedRoot, finishedWork); + break; + } + } +} - if (fiber === deletedSubtreeRoot) { - nextEffect = null; - return; - } +function commitPassiveUnmountEffects(finishedWork) { + setCurrentFiber(finishedWork); + commitPassiveUnmountOnFiber(finishedWork); + resetCurrentFiber(); +} // If we're inside a brand new tree, or a tree that was already visible, then we +// should only suspend host components that have a ShouldSuspendCommit flag. +// Components without it haven't changed since the last commit, so we can skip +// over those. +// +// When we enter a tree that is being revealed (going from hidden -> visible), +// we need to suspend _any_ component that _may_ suspend. Even if they're +// already in the "current" tree. Because their visibility has changed, the +// browser may not have prerendered them yet. So we check the MaySuspendCommit +// flag instead. + +var suspenseyCommitFlag = ShouldSuspendCommit; +function accumulateSuspenseyCommit(finishedWork) { + accumulateSuspenseyCommitOnFiber(finishedWork); +} - if (sibling !== null) { - sibling.return = returnFiber; - nextEffect = sibling; - return; - } +function recursivelyAccumulateSuspenseyCommit(parentFiber) { + if (parentFiber.subtreeFlags & suspenseyCommitFlag) { + var child = parentFiber.child; - nextEffect = returnFiber; - } + while (child !== null) { + accumulateSuspenseyCommitOnFiber(child); + child = child.sibling; } + } +} - function commitPassiveUnmountInsideDeletedTreeOnFiber( - current, - nearestMountedAncestor - ) { - switch (current.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - commitHookPassiveUnmountEffects( - current, - nearestMountedAncestor, - Passive - ); - break; - } - // TODO: run passive unmount effects when unmounting a root. - // Because passive unmount effects are not currently run, - // the cache instance owned by the root will never be freed. - // When effects are run, the cache should be freed here: - // case HostRoot: { - // if (enableCache) { - // const cache = current.memoizedState.cache; - // releaseCache(cache); - // } - // break; - // } - - case LegacyHiddenComponent: - case OffscreenComponent: { - { - if ( - current.memoizedState !== null && - current.memoizedState.cachePool !== null - ) { - var cache = current.memoizedState.cachePool.pool; // Retain/release the cache used for pending (suspended) nodes. - // Note that this is only reached in the non-suspended/visible case: - // when the content is suspended/hidden, the retain/release occurs - // via the parent Suspense component (see case above). - - if (cache != null) { - retainCache(cache); - } - } - } +function accumulateSuspenseyCommitOnFiber(fiber) { + switch (fiber.tag) { + case HostHoistable: + { + recursivelyAccumulateSuspenseyCommit(fiber); - break; + if (fiber.flags & suspenseyCommitFlag) { + if (fiber.memoizedState !== null) { + suspendResource(); + } } - case SuspenseComponent: { - break; - } + break; + } - case CacheComponent: { - { - var _cache = current.memoizedState.cache; - releaseCache(_cache); - } + case HostComponent: + { + recursivelyAccumulateSuspenseyCommit(fiber); - break; - } + break; } - } - function invokeLayoutEffectMountInDEV(fiber) { + case HostRoot: + case HostPortal: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListMount(Layout | HasEffect, fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } + { + recursivelyAccumulateSuspenseyCommit(fiber); + } - break; - } + break; + } - case ClassComponent: { - var instance = fiber.stateNode; + case OffscreenComponent: + { + var isHidden = fiber.memoizedState !== null; - if (typeof instance.componentDidMount === "function") { - try { - instance.componentDidMount(); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } - } + if (isHidden) ; else { + var current = fiber.alternate; + var wasHidden = current !== null && current.memoizedState !== null; - break; + if (wasHidden) { + // This tree is being revealed. Visit all newly visible suspensey + // instances, even if they're in the current tree. + var prevFlags = suspenseyCommitFlag; + suspenseyCommitFlag = MaySuspendCommit; + recursivelyAccumulateSuspenseyCommit(fiber); + suspenseyCommitFlag = prevFlags; + } else { + recursivelyAccumulateSuspenseyCommit(fiber); } } + + break; } - } - function invokePassiveEffectMountInDEV(fiber) { + default: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListMount(Passive | HasEffect, fiber); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } - - break; - } - } + recursivelyAccumulateSuspenseyCommit(fiber); } - } + } +} - function invokeLayoutEffectUnmountInDEV(fiber) { - { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListUnmount( - Layout | HasEffect, - fiber, - fiber.return - ); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } +function detachAlternateSiblings(parentFiber) { + // A fiber was deleted from this parent fiber, but it's still part of the + // previous (alternate) parent fiber's list of children. Because children + // are a linked list, an earlier sibling that's still alive will be + // connected to the deleted fiber via its `alternate`: + // + // live fiber --alternate--> previous live fiber --sibling--> deleted + // fiber + // + // We can't disconnect `alternate` on nodes that haven't been deleted yet, + // but we can disconnect the `sibling` and `child` pointers. + var previousFiber = parentFiber.alternate; + + if (previousFiber !== null) { + var detachedChild = previousFiber.child; + + if (detachedChild !== null) { + previousFiber.child = null; - break; - } + do { + // $FlowFixMe[incompatible-use] found when upgrading Flow + var detachedSibling = detachedChild.sibling; // $FlowFixMe[incompatible-use] found when upgrading Flow - case ClassComponent: { - var instance = fiber.stateNode; + detachedChild.sibling = null; + detachedChild = detachedSibling; + } while (detachedChild !== null); + } + } +} - if (typeof instance.componentWillUnmount === "function") { - safelyCallComponentWillUnmount(fiber, fiber.return, instance); - } +function commitHookPassiveUnmountEffects(finishedWork, nearestMountedAncestor, hookFlags) { + if (shouldProfile(finishedWork)) { + startPassiveEffectTimer(); + commitHookEffectListUnmount(hookFlags, finishedWork, nearestMountedAncestor); + recordPassiveEffectDuration(finishedWork); + } else { + commitHookEffectListUnmount(hookFlags, finishedWork, nearestMountedAncestor); + } +} - break; - } - } +function recursivelyTraversePassiveUnmountEffects(parentFiber) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects have fired. + var deletions = parentFiber.deletions; + + if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; // TODO: Convert this to use recursion + + nextEffect = childToDelete; + commitPassiveUnmountEffectsInsideOfDeletedTree_begin(childToDelete, parentFiber); } } - function invokePassiveEffectUnmountInDEV(fiber) { + detachAlternateSiblings(parentFiber); + } + + var prevDebugFiber = getCurrentFiber(); // TODO: Split PassiveMask into separate masks for mount and unmount? + + if (parentFiber.subtreeFlags & PassiveMask) { + var child = parentFiber.child; + + while (child !== null) { + setCurrentFiber(child); + commitPassiveUnmountOnFiber(child); + child = child.sibling; + } + } + + setCurrentFiber(prevDebugFiber); +} + +function commitPassiveUnmountOnFiber(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: { - // We don't need to re-check StrictEffectsMode here. - // This function is only called if that check has already passed. - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - try { - commitHookEffectListUnmount( - Passive | HasEffect, - fiber, - fiber.return - ); - } catch (error) { - captureCommitPhaseError(fiber, fiber.return, error); - } - } + recursivelyTraversePassiveUnmountEffects(finishedWork); + + if (finishedWork.flags & Passive$1) { + commitHookPassiveUnmountEffects(finishedWork, finishedWork.return, Passive | HasEffect); } + + break; } - } - function getCacheForType(resourceType) { - var cache = readContext(CacheContext); - var cacheForType = cache.data.get(resourceType); + case OffscreenComponent: + { + var instance = finishedWork.stateNode; + var nextState = finishedWork.memoizedState; + var isHidden = nextState !== null; + + if (isHidden && instance._visibility & OffscreenPassiveEffectsConnected && ( // For backwards compatibility, don't unmount when a tree suspends. In + // the future we may change this to unmount after a delay. + finishedWork.return === null || finishedWork.return.tag !== SuspenseComponent)) { + // The effects are currently connected. Disconnect them. + // TODO: Add option or heuristic to delay before disconnecting the + // effects. Then if the tree reappears before the delay has elapsed, we + // can skip toggling the effects entirely. + instance._visibility &= ~OffscreenPassiveEffectsConnected; + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + } else { + recursivelyTraversePassiveUnmountEffects(finishedWork); + } - if (cacheForType === undefined) { - cacheForType = resourceType(); - cache.data.set(resourceType, cacheForType); + break; } - return cacheForType; - } - - var DefaultCacheDispatcher = { - getCacheForType: getCacheForType - }; + default: + { + recursivelyTraversePassiveUnmountEffects(finishedWork); + break; + } + } +} - if (typeof Symbol === "function" && Symbol.for) { - var symbolFor = Symbol.for; - symbolFor("selector.component"); - symbolFor("selector.has_pseudo_class"); - symbolFor("selector.role"); - symbolFor("selector.test_id"); - symbolFor("selector.text"); - } +function recursivelyTraverseDisconnectPassiveEffects(parentFiber) { + // Deletions effects can be scheduled on any fiber type. They need to happen + // before the children effects have fired. + var deletions = parentFiber.deletions; - function isLegacyActEnvironment(fiber) { - { - // Legacy mode. We preserve the behavior of React 17's act. It assumes an - // act environment whenever `jest` is defined, but you can still turn off - // spurious warnings by setting IS_REACT_ACT_ENVIRONMENT explicitly - // to false. - var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global - typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" // $FlowFixMe[cannot-resolve-name] - ? IS_REACT_ACT_ENVIRONMENT - : undefined; // $FlowFixMe[cannot-resolve-name] - Flow doesn't know about jest + if ((parentFiber.flags & ChildDeletion) !== NoFlags$1) { + if (deletions !== null) { + for (var i = 0; i < deletions.length; i++) { + var childToDelete = deletions[i]; // TODO: Convert this to use recursion - var jestIsDefined = typeof jest !== "undefined"; - return jestIsDefined && isReactActEnvironmentGlobal !== false; + nextEffect = childToDelete; + commitPassiveUnmountEffectsInsideOfDeletedTree_begin(childToDelete, parentFiber); } } - function isConcurrentActEnvironment() { - { - var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global - typeof IS_REACT_ACT_ENVIRONMENT !== "undefined" // $FlowFixMe[cannot-resolve-name] - ? IS_REACT_ACT_ENVIRONMENT - : undefined; - - if ( - !isReactActEnvironmentGlobal && - ReactSharedInternals.actQueue !== null - ) { - // TODO: Include link to relevant documentation page. - error( - "The current testing environment is not configured to support " + - "act(...)" - ); - } - - return isReactActEnvironmentGlobal; - } - } - - var PossiblyWeakMap = typeof WeakMap === "function" ? WeakMap : Map; - var NoContext = - /* */ - 0; - var BatchedContext = - /* */ - 1; - var RenderContext = - /* */ - 2; - var CommitContext = - /* */ - 4; - var RootInProgress = 0; - var RootFatalErrored = 1; - var RootErrored = 2; - var RootSuspended = 3; - var RootSuspendedWithDelay = 4; - var RootCompleted = 5; - var RootDidNotComplete = 6; // Describes where we are in the React execution stack - - var executionContext = NoContext; // The root we're working on - - var workInProgressRoot = null; // The fiber we're working on - - var workInProgress = null; // The lanes we're rendering - - var workInProgressRootRenderLanes = NoLanes; - var NotSuspended = 0; - var SuspendedOnError = 1; - var SuspendedOnData = 2; - var SuspendedOnImmediate = 3; - var SuspendedOnInstance = 4; - var SuspendedOnInstanceAndReadyToContinue = 5; - var SuspendedOnDeprecatedThrowPromise = 6; - var SuspendedAndReadyToContinue = 7; - var SuspendedOnHydration = 8; // When this is true, the work-in-progress fiber just suspended (or errored) and - // we've yet to unwind the stack. In some cases, we may yield to the main thread - // after this happens. If the fiber is pinged before we resume, we can retry - // immediately instead of unwinding the stack. - - var workInProgressSuspendedReason = NotSuspended; - var workInProgressThrownValue = null; // Whether a ping listener was attached during this render. This is slightly - // different that whether something suspended, because we don't add multiple - // listeners to a promise we've already seen (per root and lane). - - var workInProgressRootDidAttachPingListener = false; // A contextual version of workInProgressRootRenderLanes. It is a superset of - // the lanes that we started working on at the root. When we enter a subtree - // that is currently hidden, we add the lanes that would have committed if - // the hidden tree hadn't been deferred. This is modified by the - // HiddenContext module. - // - // Most things in the work loop should deal with workInProgressRootRenderLanes. - // Most things in begin/complete phases should deal with entangledRenderLanes. - var entangledRenderLanes = NoLanes; // Whether to root completed, errored, suspended, etc. + detachAlternateSiblings(parentFiber); + } - var workInProgressRootExitStatus = RootInProgress; // The work left over by components that were visited during this render. Only - // includes unprocessed updates, not work in bailed out children. + var prevDebugFiber = getCurrentFiber(); // TODO: Check PassiveStatic flag - var workInProgressRootSkippedLanes = NoLanes; // Lanes that were updated (in an interleaved event) during this render. + var child = parentFiber.child; - var workInProgressRootInterleavedUpdatedLanes = NoLanes; // Lanes that were updated during the render phase (*not* an interleaved event). + while (child !== null) { + setCurrentFiber(child); + disconnectPassiveEffect(child); + child = child.sibling; + } - var workInProgressRootPingedLanes = NoLanes; // If this lane scheduled deferred work, this is the lane of the deferred task. + setCurrentFiber(prevDebugFiber); +} - var workInProgressDeferredLane = NoLane; // Errors that are thrown during the render phase. +function disconnectPassiveEffect(finishedWork) { + switch (finishedWork.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + // TODO: Check PassiveStatic flag + commitHookPassiveUnmountEffects(finishedWork, finishedWork.return, Passive); // When disconnecting passive effects, we fire the effects in the same + // order as during a deletiong: parent before child - var workInProgressRootConcurrentErrors = null; // These are errors that we recovered from without surfacing them to the UI. - // We will log them once the tree commits. + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + break; + } - var workInProgressRootRecoverableErrors = null; // Tracks when an update occurs during the render phase. + case OffscreenComponent: + { + var instance = finishedWork.stateNode; - var workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Thacks when an update occurs during the commit phase. It's a separate - // variable from the one for renders because the commit phase may run - // concurrently to a render phase. + if (instance._visibility & OffscreenPassiveEffectsConnected) { + instance._visibility &= ~OffscreenPassiveEffectsConnected; + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + } - var didIncludeCommitPhaseUpdate = false; // The most recent time we either committed a fallback, or when a fallback was - // filled in with the resolved UI. This lets us throttle the appearance of new - // content as it streams in, to minimize jank. - // TODO: Think of a better name for this variable? + break; + } - var globalMostRecentFallbackTime = 0; - var FALLBACK_THROTTLE_MS = 300; // The absolute time for when we should start giving up on rendering - // more and prefer CPU suspense heuristics instead. + default: + { + recursivelyTraverseDisconnectPassiveEffects(finishedWork); + break; + } + } +} - var workInProgressRootRenderTargetTime = Infinity; // How long a render is supposed to take before we start following CPU - // suspense heuristics and opt out of rendering more content. +function commitPassiveUnmountEffectsInsideOfDeletedTree_begin(deletedSubtreeRoot, nearestMountedAncestor) { + while (nextEffect !== null) { + var fiber = nextEffect; // Deletion effects fire in parent -> child order + // TODO: Check if fiber has a PassiveStatic flag - var RENDER_TIMEOUT_MS = 500; - var workInProgressTransitions = null; + setCurrentFiber(fiber); + commitPassiveUnmountInsideDeletedTreeOnFiber(fiber, nearestMountedAncestor); + resetCurrentFiber(); + var child = fiber.child; // TODO: Only traverse subtree if it has a PassiveStatic flag. - function resetRenderTimer() { - workInProgressRootRenderTargetTime = now$1() + RENDER_TIMEOUT_MS; + if (child !== null) { + child.return = fiber; + nextEffect = child; + } else { + commitPassiveUnmountEffectsInsideOfDeletedTree_complete(deletedSubtreeRoot); } + } +} - function getRenderTargetTime() { - return workInProgressRootRenderTargetTime; - } - var legacyErrorBoundariesThatAlreadyFailed = null; - var rootDoesHavePassiveEffects = false; - var rootWithPendingPassiveEffects = null; - var pendingPassiveEffectsLanes = NoLanes; - var pendingPassiveProfilerEffects = []; - var pendingPassiveEffectsRemainingLanes = NoLanes; - var pendingPassiveTransitions = null; // Use these to prevent an infinite loop of nested updates +function commitPassiveUnmountEffectsInsideOfDeletedTree_complete(deletedSubtreeRoot) { + while (nextEffect !== null) { + var fiber = nextEffect; + var sibling = fiber.sibling; + var returnFiber = fiber.return; // Recursively traverse the entire deleted tree and clean up fiber fields. + // This is more aggressive than ideal, and the long term goal is to only + // have to detach the deleted tree at the root. - var NESTED_UPDATE_LIMIT = 50; - var nestedUpdateCount = 0; - var rootWithNestedUpdates = null; - var isFlushingPassiveEffects = false; - var didScheduleUpdateDuringPassiveEffects = false; - var NESTED_PASSIVE_UPDATE_LIMIT = 50; - var nestedPassiveUpdateCount = 0; - var rootWithPassiveNestedUpdates = null; - var isRunningInsertionEffect = false; - function getWorkInProgressRoot() { - return workInProgressRoot; - } - function getWorkInProgressRootRenderLanes() { - return workInProgressRootRenderLanes; - } - function isWorkLoopSuspendedOnData() { - return workInProgressSuspendedReason === SuspendedOnData; + detachFiberAfterEffects(fiber); + + if (fiber === deletedSubtreeRoot) { + nextEffect = null; + return; } - function requestUpdateLane(fiber) { - // Special cases - var mode = fiber.mode; - if ((mode & ConcurrentMode) === NoMode) { - return SyncLane; - } else if ( - (executionContext & RenderContext) !== NoContext && - workInProgressRootRenderLanes !== NoLanes - ) { - // This is a render phase update. These are not officially supported. The - // old behavior is to give this the same "thread" (lanes) as - // whatever is currently rendering. So if you call `setState` on a component - // that happens later in the same render, it will flush. Ideally, we want to - // remove the special case and treat them as if they came from an - // interleaved event. Regardless, this pattern is not officially supported. - // This behavior is only a fallback. The flag only exists until we can roll - // out the setState warning, since existing code might accidentally rely on - // the current behavior. - return pickArbitraryLane(workInProgressRootRenderLanes); - } + if (sibling !== null) { + sibling.return = returnFiber; + nextEffect = sibling; + return; + } - var transition = requestCurrentTransition(); + nextEffect = returnFiber; + } +} - if (transition !== null) { +function commitPassiveUnmountInsideDeletedTreeOnFiber(current, nearestMountedAncestor) { + switch (current.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + commitHookPassiveUnmountEffects(current, nearestMountedAncestor, Passive); + break; + } + // TODO: run passive unmount effects when unmounting a root. + // Because passive unmount effects are not currently run, + // the cache instance owned by the root will never be freed. + // When effects are run, the cache should be freed here: + // case HostRoot: { + // if (enableCache) { + // const cache = current.memoizedState.cache; + // releaseCache(cache); + // } + // break; + // } + + case LegacyHiddenComponent: + case OffscreenComponent: + { { - if (!transition._updatedFibers) { - transition._updatedFibers = new Set(); + if (current.memoizedState !== null && current.memoizedState.cachePool !== null) { + var cache = current.memoizedState.cachePool.pool; // Retain/release the cache used for pending (suspended) nodes. + // Note that this is only reached in the non-suspended/visible case: + // when the content is suspended/hidden, the retain/release occurs + // via the parent Suspense component (see case above). + + if (cache != null) { + retainCache(cache); + } } - - transition._updatedFibers.add(fiber); } - var actionScopeLane = peekEntangledActionLane(); - return actionScopeLane !== NoLane // We're inside an async action scope. Reuse the same lane. - ? actionScopeLane // We may or may not be inside an async action scope. If we are, this - : // is the first update in that scope. Either way, we need to get a - // fresh transition lane. - requestTransitionLane(); + break; } - return eventPriorityToLane(resolveUpdatePriority()); - } - - function requestRetryLane(fiber) { - // This is a fork of `requestUpdateLane` designed specifically for Suspense - // "retries" — a special update that attempts to flip a Suspense boundary - // from its placeholder state to its primary/resolved state. - // Special cases - var mode = fiber.mode; + case SuspenseComponent: + { - if ((mode & ConcurrentMode) === NoMode) { - return SyncLane; + break; } - return claimNextRetryLane(); - } + case CacheComponent: + { + { + var _cache = current.memoizedState.cache; + releaseCache(_cache); + } + + break; + } + } +} - function requestDeferredLane() { - if (workInProgressDeferredLane === NoLane) { - // If there are multiple useDeferredValue hooks in the same render, the - // tasks that they spawn should all be batched together, so they should all - // receive the same lane. - // Check the priority of the current render to decide the priority of the - // deferred task. - // OffscreenLane is used for prerendering, but we also use OffscreenLane - // for incremental hydration. It's given the lowest priority because the - // initial HTML is the same as the final UI. But useDeferredValue during - // hydration is an exception — we need to upgrade the UI to the final - // value. So if we're currently hydrating, we treat it like a transition. - var isPrerendering = - includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) && - !getIsHydrating(); +function invokeLayoutEffectMountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListMount(Layout | HasEffect, fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } - if (isPrerendering) { - // There's only one OffscreenLane, so if it contains deferred work, we - // should just reschedule using the same lane. - workInProgressDeferredLane = OffscreenLane; - } else { - // Everything else is spawned as a transition. - workInProgressDeferredLane = claimNextTransitionLane(); + break; } - } // Mark the parent Suspense boundary so it knows to spawn the deferred lane. - var suspenseHandler = getSuspenseHandler(); + case ClassComponent: + { + var instance = fiber.stateNode; - if (suspenseHandler !== null) { - // TODO: As an optimization, we shouldn't entangle the lanes at the root; we - // can entangle them using the baseLanes of the Suspense boundary instead. - // We only need to do something special if there's no Suspense boundary. - suspenseHandler.flags |= DidDefer; - } + if (typeof instance.componentDidMount === 'function') { + try { + instance.componentDidMount(); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } + } - return workInProgressDeferredLane; - } - function peekDeferredLane() { - return workInProgressDeferredLane; + break; + } } - function scheduleUpdateOnFiber(root, fiber, lane) { - { - if (isRunningInsertionEffect) { - error("useInsertionEffect must not schedule updates."); + } +} + +function invokePassiveEffectMountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListMount(Passive | HasEffect, fiber); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); + } + + break; } - } + } + } +} - { - if (isFlushingPassiveEffects) { - didScheduleUpdateDuringPassiveEffects = true; - } - } // Check if the work loop is currently suspended and waiting for data to - // finish loading. - - if ( - // Suspended render phase - (root === workInProgressRoot && - workInProgressSuspendedReason === SuspendedOnData) || // Suspended commit phase - root.cancelPendingCommit !== null - ) { - // The incoming update might unblock the current render. Interrupt the - // current attempt and restart from the top. - prepareFreshStack(root, NoLanes); - markRootSuspended( - root, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } // Mark that the root has a pending update. - - markRootUpdated(root, lane); - - if ( - (executionContext & RenderContext) !== NoLanes && - root === workInProgressRoot - ) { - // This update was dispatched during the render phase. This is a mistake - // if the update originates from user space (with the exception of local - // hook updates, which are handled differently and don't reach this - // function), but there are some internal React features that use this as - // an implementation detail, like selective hydration. - warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase - } else { - // This is a normal update, scheduled from outside the render phase. For - // example, during an input event. +function invokeLayoutEffectUnmountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: { - if (isDevToolsPresent) { - addFiberToLanesMap(root, fiber, lane); + try { + commitHookEffectListUnmount(Layout | HasEffect, fiber, fiber.return); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); } + + break; } - warnIfUpdatesNotWrappedWithActDEV(fiber); + case ClassComponent: + { + var instance = fiber.stateNode; - if (root === workInProgressRoot) { - // Received an update to a tree that's in the middle of rendering. Mark - // that there was an interleaved update work on this root. - if ((executionContext & RenderContext) === NoContext) { - workInProgressRootInterleavedUpdatedLanes = mergeLanes( - workInProgressRootInterleavedUpdatedLanes, - lane - ); + if (typeof instance.componentWillUnmount === 'function') { + safelyCallComponentWillUnmount(fiber, fiber.return, instance); } - if (workInProgressRootExitStatus === RootSuspendedWithDelay) { - // The root already suspended with a delay, which means this render - // definitely won't finish. Since we have a new update, let's mark it as - // suspended now, right before marking the incoming update. This has the - // effect of interrupting the current render and switching to the update. - // TODO: Make sure this doesn't override pings that happen while we've - // already started rendering. - markRootSuspended( - root, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } + break; } + } + } +} - ensureRootIsScheduled(root); - - if ( - lane === SyncLane && - executionContext === NoContext && - !disableLegacyMode && - (fiber.mode & ConcurrentMode) === NoMode - ) { - if (ReactSharedInternals.isBatchingLegacy); - else { - // Flush the synchronous work now, unless we're already working or inside - // a batch. This is intentionally inside scheduleUpdateOnFiber instead of - // scheduleCallbackForFiber to preserve the ability to schedule a callback - // without immediately flushing it. We only do this for user-initiated - // updates, to preserve historical behavior of legacy mode. - resetRenderTimer(); - flushSyncWorkOnLegacyRootsOnly(); +function invokePassiveEffectUnmountInDEV(fiber) { + { + // We don't need to re-check StrictEffectsMode here. + // This function is only called if that check has already passed. + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + try { + commitHookEffectListUnmount(Passive | HasEffect, fiber, fiber.return); + } catch (error) { + captureCommitPhaseError(fiber, fiber.return, error); } } - } } - function isUnsafeClassRenderPhaseUpdate(fiber) { - // Check if this is a render phase update. Only called by class components, - // which special (deprecated) behavior for UNSAFE_componentWillReceive props. - return (executionContext & RenderContext) !== NoContext; - } // This is the entry point for every concurrent task, i.e. anything that - // goes through Scheduler. + } +} - function performConcurrentWorkOnRoot(root, didTimeout) { - { - resetNestedUpdateFlag(); - } +function getCacheForType(resourceType) { - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); - } // Flush any pending passive effects before deciding which lanes to work on, - // in case they schedule additional work. + var cache = readContext(CacheContext); + var cacheForType = cache.data.get(resourceType); - var originalCallbackNode = root.callbackNode; - var didFlushPassiveEffects = flushPassiveEffects(); + if (cacheForType === undefined) { + cacheForType = resourceType(); + cache.data.set(resourceType, cacheForType); + } - if (didFlushPassiveEffects) { - // Something in the passive effect phase may have canceled the current task. - // Check if the task node for this root was changed. - if (root.callbackNode !== originalCallbackNode) { - // The current task was canceled. Exit. We don't need to call - // `ensureRootIsScheduled` because the check above implies either that - // there's a new task, or that there's no remaining work on this root. - return null; - } - } // Determine the next lanes to work on, using the fields stored - // on the root. - // TODO: This was already computed in the caller. Pass it as an argument. + return cacheForType; +} - var lanes = getNextLanes( - root, - root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes - ); +var DefaultCacheDispatcher = { + getCacheForType: getCacheForType +}; + +if (typeof Symbol === 'function' && Symbol.for) { + var symbolFor = Symbol.for; + symbolFor('selector.component'); + symbolFor('selector.has_pseudo_class'); + symbolFor('selector.role'); + symbolFor('selector.test_id'); + symbolFor('selector.text'); +} - if (lanes === NoLanes) { - // Defensive coding. This is never expected to happen. - return null; - } // We disable time-slicing in some cases: if the work has been CPU-bound - // for too long ("expired" work, to prevent starvation), or we're in - // sync-updates-by-default mode. - // TODO: We only check `didTimeout` defensively, to account for a Scheduler - // bug we're still investigating. Once the bug in Scheduler is fixed, - // we can remove this, since we track expiration ourselves. - - var shouldTimeSlice = - !includesBlockingLane(root, lanes) && - !includesExpiredLane(root, lanes) && - !didTimeout; - var exitStatus = shouldTimeSlice - ? renderRootConcurrent(root, lanes) - : renderRootSync(root, lanes); - - if (exitStatus !== RootInProgress) { - var renderWasConcurrent = shouldTimeSlice; +function isLegacyActEnvironment(fiber) { + { + // Legacy mode. We preserve the behavior of React 17's act. It assumes an + // act environment whenever `jest` is defined, but you can still turn off + // spurious warnings by setting IS_REACT_ACT_ENVIRONMENT explicitly + // to false. + var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global + typeof IS_REACT_ACT_ENVIRONMENT !== 'undefined' ? // $FlowFixMe[cannot-resolve-name] + IS_REACT_ACT_ENVIRONMENT : undefined; // $FlowFixMe[cannot-resolve-name] - Flow doesn't know about jest + + var jestIsDefined = typeof jest !== 'undefined'; + return jestIsDefined && isReactActEnvironmentGlobal !== false; + } +} +function isConcurrentActEnvironment() { + { + var isReactActEnvironmentGlobal = // $FlowFixMe[cannot-resolve-name] Flow doesn't know about IS_REACT_ACT_ENVIRONMENT global + typeof IS_REACT_ACT_ENVIRONMENT !== 'undefined' ? // $FlowFixMe[cannot-resolve-name] + IS_REACT_ACT_ENVIRONMENT : undefined; - do { - if (exitStatus === RootDidNotComplete) { - // The render unwound without completing the tree. This happens in special - // cases where need to exit the current render without producing a - // consistent tree or committing. - markRootSuspended(root, lanes, NoLane); - } else { - // The render completed. - // Check if this render may have yielded to a concurrent event, and if so, - // confirm that any newly rendered stores are consistent. - // TODO: It's possible that even a concurrent render may never have yielded - // to the main thread, if it was fast enough, or if it expired. We could - // skip the consistency check in that case, too. - var finishedWork = root.current.alternate; - - if ( - renderWasConcurrent && - !isRenderConsistentWithExternalStores(finishedWork) - ) { - // A store was mutated in an interleaved event. Render again, - // synchronously, to block further mutations. - exitStatus = renderRootSync(root, lanes); // We assume the tree is now consistent because we didn't yield to any - // concurrent events. - - renderWasConcurrent = false; // Need to check the exit status again. + if (!isReactActEnvironmentGlobal && ReactSharedInternals.actQueue !== null) { + // TODO: Include link to relevant documentation page. + error('The current testing environment is not configured to support ' + 'act(...)'); + } - continue; - } // Check if something threw - - if (exitStatus === RootErrored) { - var lanesThatJustErrored = lanes; - var errorRetryLanes = getLanesToRetrySynchronouslyOnError( - root, - lanesThatJustErrored - ); - - if (errorRetryLanes !== NoLanes) { - lanes = errorRetryLanes; - exitStatus = recoverFromConcurrentError( - root, - lanesThatJustErrored, - errorRetryLanes - ); - renderWasConcurrent = false; // Need to check the exit status again. - - if (exitStatus !== RootErrored) { - // The root did not error this time. Restart the exit algorithm - // from the beginning. - // TODO: Refactor the exit algorithm to be less confusing. Maybe - // more branches + recursion instead of a loop. I think the only - // thing that causes it to be a loop is the RootDidNotComplete - // check. If that's true, then we don't need a loop/recursion - // at all. - continue; - } - } - } + return isReactActEnvironmentGlobal; + } +} - if (exitStatus === RootFatalErrored) { - prepareFreshStack(root, NoLanes); - markRootSuspended(root, lanes, NoLane); - break; - } // We now have a consistent tree. The next step is either to commit it, - // or, if something suspended, wait to commit it after a timeout. +var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; +var NoContext = +/* */ +0; +var BatchedContext = +/* */ +1; +var RenderContext = +/* */ +2; +var CommitContext = +/* */ +4; +var RootInProgress = 0; +var RootFatalErrored = 1; +var RootErrored = 2; +var RootSuspended = 3; +var RootSuspendedWithDelay = 4; +var RootCompleted = 5; +var RootDidNotComplete = 6; // Describes where we are in the React execution stack + +var executionContext = NoContext; // The root we're working on + +var workInProgressRoot = null; // The fiber we're working on + +var workInProgress = null; // The lanes we're rendering + +var workInProgressRootRenderLanes = NoLanes; +var NotSuspended = 0; +var SuspendedOnError = 1; +var SuspendedOnData = 2; +var SuspendedOnImmediate = 3; +var SuspendedOnInstance = 4; +var SuspendedOnInstanceAndReadyToContinue = 5; +var SuspendedOnDeprecatedThrowPromise = 6; +var SuspendedAndReadyToContinue = 7; +var SuspendedOnHydration = 8; // When this is true, the work-in-progress fiber just suspended (or errored) and +// we've yet to unwind the stack. In some cases, we may yield to the main thread +// after this happens. If the fiber is pinged before we resume, we can retry +// immediately instead of unwinding the stack. + +var workInProgressSuspendedReason = NotSuspended; +var workInProgressThrownValue = null; // Whether a ping listener was attached during this render. This is slightly +// different that whether something suspended, because we don't add multiple +// listeners to a promise we've already seen (per root and lane). + +var workInProgressRootDidAttachPingListener = false; // A contextual version of workInProgressRootRenderLanes. It is a superset of +// the lanes that we started working on at the root. When we enter a subtree +// that is currently hidden, we add the lanes that would have committed if +// the hidden tree hadn't been deferred. This is modified by the +// HiddenContext module. +// +// Most things in the work loop should deal with workInProgressRootRenderLanes. +// Most things in begin/complete phases should deal with entangledRenderLanes. + +var entangledRenderLanes = NoLanes; // Whether to root completed, errored, suspended, etc. + +var workInProgressRootExitStatus = RootInProgress; // The work left over by components that were visited during this render. Only +// includes unprocessed updates, not work in bailed out children. + +var workInProgressRootSkippedLanes = NoLanes; // Lanes that were updated (in an interleaved event) during this render. + +var workInProgressRootInterleavedUpdatedLanes = NoLanes; // Lanes that were updated during the render phase (*not* an interleaved event). + +var workInProgressRootPingedLanes = NoLanes; // If this lane scheduled deferred work, this is the lane of the deferred task. + +var workInProgressDeferredLane = NoLane; // Errors that are thrown during the render phase. + +var workInProgressRootConcurrentErrors = null; // These are errors that we recovered from without surfacing them to the UI. +// We will log them once the tree commits. + +var workInProgressRootRecoverableErrors = null; // Tracks when an update occurs during the render phase. + +var workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Thacks when an update occurs during the commit phase. It's a separate +// variable from the one for renders because the commit phase may run +// concurrently to a render phase. + +var didIncludeCommitPhaseUpdate = false; // The most recent time we either committed a fallback, or when a fallback was +// filled in with the resolved UI. This lets us throttle the appearance of new +// content as it streams in, to minimize jank. +// TODO: Think of a better name for this variable? + +var globalMostRecentFallbackTime = 0; +var FALLBACK_THROTTLE_MS = 300; // The absolute time for when we should start giving up on rendering +// more and prefer CPU suspense heuristics instead. + +var workInProgressRootRenderTargetTime = Infinity; // How long a render is supposed to take before we start following CPU +// suspense heuristics and opt out of rendering more content. + +var RENDER_TIMEOUT_MS = 500; +var workInProgressTransitions = null; + +function resetRenderTimer() { + workInProgressRootRenderTargetTime = now$1() + RENDER_TIMEOUT_MS; +} - root.finishedWork = finishedWork; - root.finishedLanes = lanes; - finishConcurrentRender(root, exitStatus, finishedWork, lanes); - } +function getRenderTargetTime() { + return workInProgressRootRenderTargetTime; +} +var legacyErrorBoundariesThatAlreadyFailed = null; +var rootDoesHavePassiveEffects = false; +var rootWithPendingPassiveEffects = null; +var pendingPassiveEffectsLanes = NoLanes; +var pendingPassiveProfilerEffects = []; +var pendingPassiveEffectsRemainingLanes = NoLanes; +var pendingPassiveTransitions = null; // Use these to prevent an infinite loop of nested updates + +var NESTED_UPDATE_LIMIT = 50; +var nestedUpdateCount = 0; +var rootWithNestedUpdates = null; +var isFlushingPassiveEffects = false; +var didScheduleUpdateDuringPassiveEffects = false; +var NESTED_PASSIVE_UPDATE_LIMIT = 50; +var nestedPassiveUpdateCount = 0; +var rootWithPassiveNestedUpdates = null; +var isRunningInsertionEffect = false; +function getWorkInProgressRoot() { + return workInProgressRoot; +} +function getWorkInProgressRootRenderLanes() { + return workInProgressRootRenderLanes; +} +function isWorkLoopSuspendedOnData() { + return workInProgressSuspendedReason === SuspendedOnData; +} +function requestUpdateLane(fiber) { + // Special cases + var mode = fiber.mode; + + if ((mode & ConcurrentMode) === NoMode) { + return SyncLane; + } else if ((executionContext & RenderContext) !== NoContext && workInProgressRootRenderLanes !== NoLanes) { + // This is a render phase update. These are not officially supported. The + // old behavior is to give this the same "thread" (lanes) as + // whatever is currently rendering. So if you call `setState` on a component + // that happens later in the same render, it will flush. Ideally, we want to + // remove the special case and treat them as if they came from an + // interleaved event. Regardless, this pattern is not officially supported. + // This behavior is only a fallback. The flag only exists until we can roll + // out the setState warning, since existing code might accidentally rely on + // the current behavior. + return pickArbitraryLane(workInProgressRootRenderLanes); + } + + var transition = requestCurrentTransition(); + + if (transition !== null) { + { + if (!transition._updatedFibers) { + transition._updatedFibers = new Set(); + } - break; - } while (true); - } - - ensureRootIsScheduled(root); - return getContinuationForRoot(root, originalCallbackNode); - } - - function recoverFromConcurrentError( - root, - originallyAttemptedLanes, - errorRetryLanes - ) { - // If an error occurred during hydration, discard server response and fall - // back to client side render. - // Before rendering again, save the errors from the previous attempt. - var errorsFromFirstAttempt = workInProgressRootConcurrentErrors; - var wasRootDehydrated = supportsHydration; - - var exitStatus = renderRootSync(root, errorRetryLanes); - - if (exitStatus !== RootErrored) { - // Successfully finished rendering on retry - if (workInProgressRootDidAttachPingListener && !wasRootDehydrated) { - // During the synchronous render, we attached additional ping listeners. - // This is highly suggestive of an uncached promise (though it's not the - // only reason this would happen). If it was an uncached promise, then - // it may have masked a downstream error from ocurring without actually - // fixing it. Example: - // - // use(Promise.resolve('uncached')) - // throw new Error('Oops!') - // - // When this happens, there's a conflict between blocking potential - // concurrent data races and unwrapping uncached promise values. We - // have to choose one or the other. Because the data race recovery is - // a last ditch effort, we'll disable it. - root.errorRecoveryDisabledLanes = mergeLanes( - root.errorRecoveryDisabledLanes, - originallyAttemptedLanes - ); // Mark the current render as suspended and force it to restart. Once - // these lanes finish successfully, we'll re-enable the error recovery - // mechanism for subsequent updates. + transition._updatedFibers.add(fiber); + } - workInProgressRootInterleavedUpdatedLanes |= originallyAttemptedLanes; - return RootSuspendedWithDelay; - } // The errors from the failed first attempt have been recovered. Add - // them to the collection of recoverable errors. We'll log them in the - // commit phase. + var actionScopeLane = peekEntangledActionLane(); + return actionScopeLane !== NoLane ? // We're inside an async action scope. Reuse the same lane. + actionScopeLane : // We may or may not be inside an async action scope. If we are, this + // is the first update in that scope. Either way, we need to get a + // fresh transition lane. + requestTransitionLane(); + } - var errorsFromSecondAttempt = workInProgressRootRecoverableErrors; - workInProgressRootRecoverableErrors = errorsFromFirstAttempt; // The errors from the second attempt should be queued after the errors - // from the first attempt, to preserve the causal sequence. + return eventPriorityToLane(resolveUpdatePriority()); +} - if (errorsFromSecondAttempt !== null) { - queueRecoverableErrors(errorsFromSecondAttempt); - } - } +function requestRetryLane(fiber) { + // This is a fork of `requestUpdateLane` designed specifically for Suspense + // "retries" — a special update that attempts to flip a Suspense boundary + // from its placeholder state to its primary/resolved state. + // Special cases + var mode = fiber.mode; - return exitStatus; + if ((mode & ConcurrentMode) === NoMode) { + return SyncLane; + } + + return claimNextRetryLane(); +} + +function requestDeferredLane() { + if (workInProgressDeferredLane === NoLane) { + // If there are multiple useDeferredValue hooks in the same render, the + // tasks that they spawn should all be batched together, so they should all + // receive the same lane. + // Check the priority of the current render to decide the priority of the + // deferred task. + // OffscreenLane is used for prerendering, but we also use OffscreenLane + // for incremental hydration. It's given the lowest priority because the + // initial HTML is the same as the final UI. But useDeferredValue during + // hydration is an exception — we need to upgrade the UI to the final + // value. So if we're currently hydrating, we treat it like a transition. + var isPrerendering = includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) && !getIsHydrating(); + + if (isPrerendering) { + // There's only one OffscreenLane, so if it contains deferred work, we + // should just reschedule using the same lane. + workInProgressDeferredLane = OffscreenLane; + } else { + // Everything else is spawned as a transition. + workInProgressDeferredLane = claimNextTransitionLane(); + } + } // Mark the parent Suspense boundary so it knows to spawn the deferred lane. + + + var suspenseHandler = getSuspenseHandler(); + + if (suspenseHandler !== null) { + // TODO: As an optimization, we shouldn't entangle the lanes at the root; we + // can entangle them using the baseLanes of the Suspense boundary instead. + // We only need to do something special if there's no Suspense boundary. + suspenseHandler.flags |= DidDefer; + } + + return workInProgressDeferredLane; +} +function peekDeferredLane() { + return workInProgressDeferredLane; +} +function scheduleUpdateOnFiber(root, fiber, lane) { + { + if (isRunningInsertionEffect) { + error('useInsertionEffect must not schedule updates.'); + } + } + + { + if (isFlushingPassiveEffects) { + didScheduleUpdateDuringPassiveEffects = true; + } + } // Check if the work loop is currently suspended and waiting for data to + // finish loading. + + + if ( // Suspended render phase + root === workInProgressRoot && workInProgressSuspendedReason === SuspendedOnData || // Suspended commit phase + root.cancelPendingCommit !== null) { + // The incoming update might unblock the current render. Interrupt the + // current attempt and restart from the top. + prepareFreshStack(root, NoLanes); + markRootSuspended(root, workInProgressRootRenderLanes, workInProgressDeferredLane); + } // Mark that the root has a pending update. + + + markRootUpdated(root, lane); + + if ((executionContext & RenderContext) !== NoLanes && root === workInProgressRoot) { + // This update was dispatched during the render phase. This is a mistake + // if the update originates from user space (with the exception of local + // hook updates, which are handled differently and don't reach this + // function), but there are some internal React features that use this as + // an implementation detail, like selective hydration. + warnAboutRenderPhaseUpdatesInDEV(fiber); // Track lanes that were updated during the render phase + } else { + // This is a normal update, scheduled from outside the render phase. For + // example, during an input event. + { + if (isDevToolsPresent) { + addFiberToLanesMap(root, fiber, lane); + } } - function queueRecoverableErrors(errors) { - if (workInProgressRootRecoverableErrors === null) { - workInProgressRootRecoverableErrors = errors; - } else { - // $FlowFixMe[method-unbinding] - workInProgressRootRecoverableErrors.push.apply( - workInProgressRootRecoverableErrors, - errors - ); - } - } - - function finishConcurrentRender(root, exitStatus, finishedWork, lanes) { - // TODO: The fact that most of these branches are identical suggests that some - // of the exit statuses are not best modeled as exit statuses and should be - // tracked orthogonally. - switch (exitStatus) { - case RootInProgress: - case RootFatalErrored: { - throw new Error("Root did not complete. This is a bug in React."); - } - - case RootSuspendedWithDelay: { - if (includesOnlyTransitions(lanes)) { - // This is a transition, so we should exit without committing a - // placeholder and without scheduling a timeout. Delay indefinitely - // until we receive more data. - markRootSuspended(root, lanes, workInProgressDeferredLane); - return; - } // Commit the placeholder. + warnIfUpdatesNotWrappedWithActDEV(fiber); - break; - } + if (root === workInProgressRoot) { + // Received an update to a tree that's in the middle of rendering. Mark + // that there was an interleaved update work on this root. + if ((executionContext & RenderContext) === NoContext) { + workInProgressRootInterleavedUpdatedLanes = mergeLanes(workInProgressRootInterleavedUpdatedLanes, lane); + } - case RootErrored: { - // This render errored. Ignore any recoverable errors because we weren't actually - // able to recover. Instead, whatever the final errors were is the ones we log. - // This ensures that we only log the actual client side error if it's just a plain - // error thrown from a component on the server and the client. - workInProgressRootRecoverableErrors = null; - break; - } + if (workInProgressRootExitStatus === RootSuspendedWithDelay) { + // The root already suspended with a delay, which means this render + // definitely won't finish. Since we have a new update, let's mark it as + // suspended now, right before marking the incoming update. This has the + // effect of interrupting the current render and switching to the update. + // TODO: Make sure this doesn't override pings that happen while we've + // already started rendering. + markRootSuspended(root, workInProgressRootRenderLanes, workInProgressDeferredLane); + } + } - case RootSuspended: - case RootCompleted: { - break; - } + ensureRootIsScheduled(root); - default: { - throw new Error("Unknown root exit status."); - } + if (lane === SyncLane && executionContext === NoContext && !disableLegacyMode && (fiber.mode & ConcurrentMode) === NoMode) { + if (ReactSharedInternals.isBatchingLegacy) ; else { + // Flush the synchronous work now, unless we're already working or inside + // a batch. This is intentionally inside scheduleUpdateOnFiber instead of + // scheduleCallbackForFiber to preserve the ability to schedule a callback + // without immediately flushing it. We only do this for user-initiated + // updates, to preserve historical behavior of legacy mode. + resetRenderTimer(); + flushSyncWorkOnLegacyRootsOnly(); } + } + } +} +function isUnsafeClassRenderPhaseUpdate(fiber) { + // Check if this is a render phase update. Only called by class components, + // which special (deprecated) behavior for UNSAFE_componentWillReceive props. + return (executionContext & RenderContext) !== NoContext; +} // This is the entry point for every concurrent task, i.e. anything that +// goes through Scheduler. + +function performConcurrentWorkOnRoot(root, didTimeout) { + { + resetNestedUpdateFlag(); + } + + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } // Flush any pending passive effects before deciding which lanes to work on, + // in case they schedule additional work. + + + var originalCallbackNode = root.callbackNode; + var didFlushPassiveEffects = flushPassiveEffects(); + + if (didFlushPassiveEffects) { + // Something in the passive effect phase may have canceled the current task. + // Check if the task node for this root was changed. + if (root.callbackNode !== originalCallbackNode) { + // The current task was canceled. Exit. We don't need to call + // `ensureRootIsScheduled` because the check above implies either that + // there's a new task, or that there's no remaining work on this root. + return null; + } + } // Determine the next lanes to work on, using the fields stored + // on the root. + // TODO: This was already computed in the caller. Pass it as an argument. - if (shouldForceFlushFallbacksInDEV()) { - // We're inside an `act` scope. Commit immediately. - commitRoot( - root, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - workInProgressDeferredLane - ); - } else { - if ( - includesOnlyRetries(lanes) && - (alwaysThrottleRetries || exitStatus === RootSuspended) - ) { - // This render only included retries, no updates. Throttle committing - // retries so that we don't show too many loading states too quickly. - var msUntilTimeout = - globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now$1(); // Don't bother with a very short suspense time. - - if (msUntilTimeout > 10) { - markRootSuspended(root, lanes, workInProgressDeferredLane); - var nextLanes = getNextLanes(root, NoLanes); - - if (nextLanes !== NoLanes) { - // There's additional work we can do on this root. We might as well - // attempt to work on that while we're suspended. - return; - } // The render is suspended, it hasn't timed out, and there's no - // lower priority work to do. Instead of committing the fallback - // immediately, wait for more data to arrive. - // TODO: Combine retry throttling with Suspensey commits. Right now they - // run one after the other. - - root.timeoutHandle = scheduleTimeout( - commitRootWhenReady.bind( - null, - root, - finishedWork, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - lanes, - workInProgressDeferredLane - ), - msUntilTimeout - ); - return; - } - } - commitRootWhenReady( - root, - finishedWork, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - lanes, - workInProgressDeferredLane - ); - } - } - - function commitRootWhenReady( - root, - finishedWork, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - lanes, - spawnedLane - ) { - // TODO: Combine retry throttling with Suspensey commits. Right now they run - // one after the other. - if (includesOnlyNonUrgentLanes(lanes)) { - // the suspensey resources. The renderer is responsible for accumulating - // all the load events. This all happens in a single synchronous - // transaction, so it track state in its own module scope. - - accumulateSuspenseyCommit(finishedWork); // At the end, ask the renderer if it's ready to commit, or if we should - // suspend. If it's not ready, it will return a callback to subscribe to - // a ready event. - - var schedulePendingCommit = waitForCommitToBeReady(); - - if (schedulePendingCommit !== null) { - // NOTE: waitForCommitToBeReady returns a subscribe function so that we - // only allocate a function if the commit isn't ready yet. The other - // pattern would be to always pass a callback to waitForCommitToBeReady. - // Not yet ready to commit. Delay the commit until the renderer notifies - // us that it's ready. This will be canceled if we start work on the - // root again. - root.cancelPendingCommit = schedulePendingCommit( - commitRoot.bind( - null, - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate - ) - ); - markRootSuspended(root, lanes, spawnedLane); - return; - } - } // Otherwise, commit immediately. + var lanes = getNextLanes(root, root === workInProgressRoot ? workInProgressRootRenderLanes : NoLanes); - commitRoot( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - spawnedLane - ); - } + if (lanes === NoLanes) { + // Defensive coding. This is never expected to happen. + return null; + } // We disable time-slicing in some cases: if the work has been CPU-bound + // for too long ("expired" work, to prevent starvation), or we're in + // sync-updates-by-default mode. + // TODO: We only check `didTimeout` defensively, to account for a Scheduler + // bug we're still investigating. Once the bug in Scheduler is fixed, + // we can remove this, since we track expiration ourselves. - function isRenderConsistentWithExternalStores(finishedWork) { - // Search the rendered tree for external store reads, and check whether the - // stores were mutated in a concurrent event. Intentionally using an iterative - // loop instead of recursion so we can exit early. - var node = finishedWork; - while (true) { - if (node.flags & StoreConsistency) { - var updateQueue = node.updateQueue; + var shouldTimeSlice = !includesBlockingLane(root, lanes) && !includesExpiredLane(root, lanes) && (!didTimeout); + var exitStatus = shouldTimeSlice ? renderRootConcurrent(root, lanes) : renderRootSync(root, lanes); - if (updateQueue !== null) { - var checks = updateQueue.stores; - - if (checks !== null) { - for (var i = 0; i < checks.length; i++) { - var check = checks[i]; - var getSnapshot = check.getSnapshot; - var renderedValue = check.value; - - try { - if (!objectIs(getSnapshot(), renderedValue)) { - // Found an inconsistent store. - return false; - } - } catch (error) { - // If `getSnapshot` throws, return `false`. This will schedule - // a re-render, and the error will be rethrown during render. - return false; - } - } + if (exitStatus !== RootInProgress) { + var renderWasConcurrent = shouldTimeSlice; + + do { + if (exitStatus === RootDidNotComplete) { + // The render unwound without completing the tree. This happens in special + // cases where need to exit the current render without producing a + // consistent tree or committing. + markRootSuspended(root, lanes, NoLane); + } else { + // The render completed. + // Check if this render may have yielded to a concurrent event, and if so, + // confirm that any newly rendered stores are consistent. + // TODO: It's possible that even a concurrent render may never have yielded + // to the main thread, if it was fast enough, or if it expired. We could + // skip the consistency check in that case, too. + var finishedWork = root.current.alternate; + + if (renderWasConcurrent && !isRenderConsistentWithExternalStores(finishedWork)) { + // A store was mutated in an interleaved event. Render again, + // synchronously, to block further mutations. + exitStatus = renderRootSync(root, lanes); // We assume the tree is now consistent because we didn't yield to any + // concurrent events. + + renderWasConcurrent = false; // Need to check the exit status again. + + continue; + } // Check if something threw + + + if (exitStatus === RootErrored) { + var lanesThatJustErrored = lanes; + var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root, lanesThatJustErrored); + + if (errorRetryLanes !== NoLanes) { + lanes = errorRetryLanes; + exitStatus = recoverFromConcurrentError(root, lanesThatJustErrored, errorRetryLanes); + renderWasConcurrent = false; // Need to check the exit status again. + + if (exitStatus !== RootErrored) { + // The root did not error this time. Restart the exit algorithm + // from the beginning. + // TODO: Refactor the exit algorithm to be less confusing. Maybe + // more branches + recursion instead of a loop. I think the only + // thing that causes it to be a loop is the RootDidNotComplete + // check. If that's true, then we don't need a loop/recursion + // at all. + continue; } } } - var child = node.child; + if (exitStatus === RootFatalErrored) { + prepareFreshStack(root, NoLanes); + markRootSuspended(root, lanes, NoLane); + break; + } // We now have a consistent tree. The next step is either to commit it, + // or, if something suspended, wait to commit it after a timeout. - if (node.subtreeFlags & StoreConsistency && child !== null) { - child.return = node; - node = child; - continue; - } - if (node === finishedWork) { - return true; - } + root.finishedWork = finishedWork; + root.finishedLanes = lanes; + finishConcurrentRender(root, exitStatus, finishedWork, lanes); + } - while (node.sibling === null) { - if (node.return === null || node.return === finishedWork) { - return true; - } + break; + } while (true); + } - node = node.return; - } + ensureRootIsScheduled(root); + return getContinuationForRoot(root, originalCallbackNode); +} - node.sibling.return = node.return; - node = node.sibling; - } // Flow doesn't know this is unreachable, but eslint does - // eslint-disable-next-line no-unreachable +function recoverFromConcurrentError(root, originallyAttemptedLanes, errorRetryLanes) { + // If an error occurred during hydration, discard server response and fall + // back to client side render. + // Before rendering again, save the errors from the previous attempt. + var errorsFromFirstAttempt = workInProgressRootConcurrentErrors; + var wasRootDehydrated = supportsHydration ; + + var exitStatus = renderRootSync(root, errorRetryLanes); + + if (exitStatus !== RootErrored) { + // Successfully finished rendering on retry + if (workInProgressRootDidAttachPingListener && !wasRootDehydrated) { + // During the synchronous render, we attached additional ping listeners. + // This is highly suggestive of an uncached promise (though it's not the + // only reason this would happen). If it was an uncached promise, then + // it may have masked a downstream error from ocurring without actually + // fixing it. Example: + // + // use(Promise.resolve('uncached')) + // throw new Error('Oops!') + // + // When this happens, there's a conflict between blocking potential + // concurrent data races and unwrapping uncached promise values. We + // have to choose one or the other. Because the data race recovery is + // a last ditch effort, we'll disable it. + root.errorRecoveryDisabledLanes = mergeLanes(root.errorRecoveryDisabledLanes, originallyAttemptedLanes); // Mark the current render as suspended and force it to restart. Once + // these lanes finish successfully, we'll re-enable the error recovery + // mechanism for subsequent updates. - return true; - } // The extra indirections around markRootUpdated and markRootSuspended is - // needed to avoid a circular dependency between this module and - // ReactFiberLane. There's probably a better way to split up these modules and - // avoid this problem. Perhaps all the root-marking functions should move into - // the work loop. + workInProgressRootInterleavedUpdatedLanes |= originallyAttemptedLanes; + return RootSuspendedWithDelay; + } // The errors from the failed first attempt have been recovered. Add + // them to the collection of recoverable errors. We'll log them in the + // commit phase. - function markRootUpdated(root, updatedLanes) { - markRootUpdated$1(root, updatedLanes); - if (enableInfiniteRenderLoopDetection) { - // Check for recursive updates - if (executionContext & RenderContext) { - workInProgressRootDidIncludeRecursiveRenderUpdate = true; - } else if (executionContext & CommitContext) { - didIncludeCommitPhaseUpdate = true; - } + var errorsFromSecondAttempt = workInProgressRootRecoverableErrors; + workInProgressRootRecoverableErrors = errorsFromFirstAttempt; // The errors from the second attempt should be queued after the errors + // from the first attempt, to preserve the causal sequence. - throwIfInfiniteUpdateLoopDetected(); - } + if (errorsFromSecondAttempt !== null) { + queueRecoverableErrors(errorsFromSecondAttempt); } + } - function markRootPinged(root, pingedLanes) { - markRootPinged$1(root, pingedLanes); + return exitStatus; +} - if (enableInfiniteRenderLoopDetection) { - // Check for recursive pings. Pings are conceptually different from updates in - // other contexts but we call it an "update" in this context because - // repeatedly pinging a suspended render can cause a recursive render loop. - // The relevant property is that it can result in a new render attempt - // being scheduled. - if (executionContext & RenderContext) { - workInProgressRootDidIncludeRecursiveRenderUpdate = true; - } else if (executionContext & CommitContext) { - didIncludeCommitPhaseUpdate = true; - } +function queueRecoverableErrors(errors) { + if (workInProgressRootRecoverableErrors === null) { + workInProgressRootRecoverableErrors = errors; + } else { + // $FlowFixMe[method-unbinding] + workInProgressRootRecoverableErrors.push.apply(workInProgressRootRecoverableErrors, errors); + } +} - throwIfInfiniteUpdateLoopDetected(); +function finishConcurrentRender(root, exitStatus, finishedWork, lanes) { + // TODO: The fact that most of these branches are identical suggests that some + // of the exit statuses are not best modeled as exit statuses and should be + // tracked orthogonally. + switch (exitStatus) { + case RootInProgress: + case RootFatalErrored: + { + throw new Error('Root did not complete. This is a bug in React.'); } - } - function markRootSuspended(root, suspendedLanes, spawnedLane) { - // When suspending, we should always exclude lanes that were pinged or (more - // rarely, since we try to avoid it) updated during the render phase. - suspendedLanes = removeLanes( - suspendedLanes, - workInProgressRootPingedLanes - ); - suspendedLanes = removeLanes( - suspendedLanes, - workInProgressRootInterleavedUpdatedLanes - ); + case RootSuspendedWithDelay: + { + if (includesOnlyTransitions(lanes)) { + // This is a transition, so we should exit without committing a + // placeholder and without scheduling a timeout. Delay indefinitely + // until we receive more data. + markRootSuspended(root, lanes, workInProgressDeferredLane); + return; + } // Commit the placeholder. - markRootSuspended$1(root, suspendedLanes, spawnedLane); - } // This is the entry point for synchronous tasks that don't go - // through Scheduler - function performSyncWorkOnRoot(root, lanes) { - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); + break; } - var didFlushPassiveEffects = flushPassiveEffects(); + case RootErrored: + { + // This render errored. Ignore any recoverable errors because we weren't actually + // able to recover. Instead, whatever the final errors were is the ones we log. + // This ensures that we only log the actual client side error if it's just a plain + // error thrown from a component on the server and the client. + workInProgressRootRecoverableErrors = null; + break; + } - if (didFlushPassiveEffects) { - // If passive effects were flushed, exit to the outer work loop in the root - // scheduler, so we can recompute the priority. - // TODO: We don't actually need this `ensureRootIsScheduled` call because - // this path is only reachable if the root is already part of the schedule. - // I'm including it only for consistency with the other exit points from - // this function. Can address in a subsequent refactor. - ensureRootIsScheduled(root); - return null; + case RootSuspended: + case RootCompleted: + { + break; } + default: { - syncNestedUpdateFlag(); + throw new Error('Unknown root exit status.'); } + } - var exitStatus = renderRootSync(root, lanes); + if (shouldForceFlushFallbacksInDEV()) { + // We're inside an `act` scope. Commit immediately. + commitRoot(root, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, workInProgressDeferredLane); + } else { + if (includesOnlyRetries(lanes) && (alwaysThrottleRetries || exitStatus === RootSuspended)) { + // This render only included retries, no updates. Throttle committing + // retries so that we don't show too many loading states too quickly. + var msUntilTimeout = globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now$1(); // Don't bother with a very short suspense time. - if (root.tag !== LegacyRoot && exitStatus === RootErrored) { - // If something threw an error, try rendering one more time. We'll render - // synchronously to block concurrent data mutations, and we'll includes - // all pending updates are included. If it still fails after the second - // attempt, we'll give up and commit the resulting tree. - var originallyAttemptedLanes = lanes; - var errorRetryLanes = getLanesToRetrySynchronouslyOnError( - root, - originallyAttemptedLanes - ); + if (msUntilTimeout > 10) { + markRootSuspended(root, lanes, workInProgressDeferredLane); + var nextLanes = getNextLanes(root, NoLanes); - if (errorRetryLanes !== NoLanes) { - lanes = errorRetryLanes; - exitStatus = recoverFromConcurrentError( - root, - originallyAttemptedLanes, - errorRetryLanes - ); - } - } + if (nextLanes !== NoLanes) { + // There's additional work we can do on this root. We might as well + // attempt to work on that while we're suspended. + return; + } // The render is suspended, it hasn't timed out, and there's no + // lower priority work to do. Instead of committing the fallback + // immediately, wait for more data to arrive. + // TODO: Combine retry throttling with Suspensey commits. Right now they + // run one after the other. - if (exitStatus === RootFatalErrored) { - prepareFreshStack(root, NoLanes); - markRootSuspended(root, lanes, NoLane); - ensureRootIsScheduled(root); - return null; - } - if (exitStatus === RootDidNotComplete) { - // The render unwound without completing the tree. This happens in special - // cases where need to exit the current render without producing a - // consistent tree or committing. - markRootSuspended(root, lanes, workInProgressDeferredLane); - ensureRootIsScheduled(root); - return null; - } // We now have a consistent tree. Because this is a sync render, we - // will commit it even if something suspended. - - var finishedWork = root.current.alternate; - root.finishedWork = finishedWork; - root.finishedLanes = lanes; - commitRoot( - root, - workInProgressRootRecoverableErrors, - workInProgressTransitions, - workInProgressRootDidIncludeRecursiveRenderUpdate, - workInProgressDeferredLane - ); // Before exiting, make sure there's a callback scheduled for the next - // pending level. - - ensureRootIsScheduled(root); - return null; + root.timeoutHandle = scheduleTimeout(commitRootWhenReady.bind(null, root, finishedWork, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, lanes, workInProgressDeferredLane), msUntilTimeout); + return; + } } - function getExecutionContext() { - return executionContext; + + commitRootWhenReady(root, finishedWork, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, lanes, workInProgressDeferredLane); + } +} + +function commitRootWhenReady(root, finishedWork, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, lanes, spawnedLane) { + // TODO: Combine retry throttling with Suspensey commits. Right now they run + // one after the other. + if (includesOnlyNonUrgentLanes(lanes)) { + // the suspensey resources. The renderer is responsible for accumulating + // all the load events. This all happens in a single synchronous + // transaction, so it track state in its own module scope. + + accumulateSuspenseyCommit(finishedWork); // At the end, ask the renderer if it's ready to commit, or if we should + // suspend. If it's not ready, it will return a callback to subscribe to + // a ready event. + + var schedulePendingCommit = waitForCommitToBeReady(); + + if (schedulePendingCommit !== null) { + // NOTE: waitForCommitToBeReady returns a subscribe function so that we + // only allocate a function if the commit isn't ready yet. The other + // pattern would be to always pass a callback to waitForCommitToBeReady. + // Not yet ready to commit. Delay the commit until the renderer notifies + // us that it's ready. This will be canceled if we start work on the + // root again. + root.cancelPendingCommit = schedulePendingCommit(commitRoot.bind(null, root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate)); + markRootSuspended(root, lanes, spawnedLane); + return; } - function batchedUpdates(fn, a) { - { - var prevExecutionContext = executionContext; - executionContext |= BatchedContext; + } // Otherwise, commit immediately. - try { - return fn(a); - } finally { - executionContext = prevExecutionContext; // If there were legacy sync updates, flush them at the end of the outer - // most batchedUpdates-like method. - - if ( - executionContext === NoContext && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. - !ReactSharedInternals.isBatchingLegacy - ) { - resetRenderTimer(); - flushSyncWorkOnLegacyRootsOnly(); + + commitRoot(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, spawnedLane); +} + +function isRenderConsistentWithExternalStores(finishedWork) { + // Search the rendered tree for external store reads, and check whether the + // stores were mutated in a concurrent event. Intentionally using an iterative + // loop instead of recursion so we can exit early. + var node = finishedWork; + + while (true) { + if (node.flags & StoreConsistency) { + var updateQueue = node.updateQueue; + + if (updateQueue !== null) { + var checks = updateQueue.stores; + + if (checks !== null) { + for (var i = 0; i < checks.length; i++) { + var check = checks[i]; + var getSnapshot = check.getSnapshot; + var renderedValue = check.value; + + try { + if (!objectIs(getSnapshot(), renderedValue)) { + // Found an inconsistent store. + return false; + } + } catch (error) { + // If `getSnapshot` throws, return `false`. This will schedule + // a re-render, and the error will be rethrown during render. + return false; + } } } } } - // Returns whether the the call was during a render or not - function flushSyncWork() { - if ((executionContext & (RenderContext | CommitContext)) === NoContext) { - flushSyncWorkOnAllRoots(); - return false; - } + var child = node.child; - return true; + if (node.subtreeFlags & StoreConsistency && child !== null) { + child.return = node; + node = child; + continue; } - // hidden subtree. The stack logic is managed there because that's the only - // place that ever modifies it. Which module it lives in doesn't matter for - // performance because this function will get inlined regardless - function setEntangledRenderLanes(newEntangledRenderLanes) { - entangledRenderLanes = newEntangledRenderLanes; - } - function getEntangledRenderLanes() { - return entangledRenderLanes; + if (node === finishedWork) { + return true; } - function resetWorkInProgressStack() { - if (workInProgress === null) return; - var interruptedWork; - - if (workInProgressSuspendedReason === NotSuspended) { - // Normal case. Work-in-progress hasn't started yet. Unwind all - // its parents. - interruptedWork = workInProgress.return; - } else { - // Work-in-progress is in suspended state. Reset the work loop and unwind - // both the suspended fiber and all its parents. - resetSuspendedWorkLoopOnUnwind(workInProgress); - interruptedWork = workInProgress; - } - - while (interruptedWork !== null) { - var current = interruptedWork.alternate; - unwindInterruptedWork(current, interruptedWork); - interruptedWork = interruptedWork.return; + while (node.sibling === null) { + if (node.return === null || node.return === finishedWork) { + return true; } - workInProgress = null; + node = node.return; } - function prepareFreshStack(root, lanes) { - root.finishedWork = null; - root.finishedLanes = NoLanes; - var timeoutHandle = root.timeoutHandle; + node.sibling.return = node.return; + node = node.sibling; + } // Flow doesn't know this is unreachable, but eslint does + // eslint-disable-next-line no-unreachable - if (timeoutHandle !== noTimeout) { - // The root previous suspended and scheduled a timeout to commit a fallback - // state. Now that we have additional work, cancel the timeout. - root.timeoutHandle = noTimeout; // $FlowFixMe[incompatible-call] Complains noTimeout is not a TimeoutID, despite the check above - - cancelTimeout(timeoutHandle); - } - var cancelPendingCommit = root.cancelPendingCommit; + return true; +} // The extra indirections around markRootUpdated and markRootSuspended is +// needed to avoid a circular dependency between this module and +// ReactFiberLane. There's probably a better way to split up these modules and +// avoid this problem. Perhaps all the root-marking functions should move into +// the work loop. - if (cancelPendingCommit !== null) { - root.cancelPendingCommit = null; - cancelPendingCommit(); - } - resetWorkInProgressStack(); - workInProgressRoot = root; - var rootWorkInProgress = createWorkInProgress(root.current, null); - workInProgress = rootWorkInProgress; - workInProgressRootRenderLanes = lanes; - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - workInProgressRootDidAttachPingListener = false; - workInProgressRootExitStatus = RootInProgress; - workInProgressRootSkippedLanes = NoLanes; - workInProgressRootInterleavedUpdatedLanes = NoLanes; - workInProgressRootPingedLanes = NoLanes; - workInProgressDeferredLane = NoLane; - workInProgressRootConcurrentErrors = null; - workInProgressRootRecoverableErrors = null; - workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Get the lanes that are entangled with whatever we're about to render. We - // track these separately so we can distinguish the priority of the render - // task from the priority of the lanes it is entangled with. For example, a - // transition may not be allowed to finish unless it includes the Sync lane, - // which is currently suspended. We should be able to render the Transition - // and Sync lane in the same batch, but at Transition priority, because the - // Sync lane already suspended. +function markRootUpdated(root, updatedLanes) { + markRootUpdated$1(root, updatedLanes); - entangledRenderLanes = getEntangledLanes(root, lanes); - finishQueueingConcurrentUpdates(); + if (enableInfiniteRenderLoopDetection) { + // Check for recursive updates + if (executionContext & RenderContext) { + workInProgressRootDidIncludeRecursiveRenderUpdate = true; + } else if (executionContext & CommitContext) { + didIncludeCommitPhaseUpdate = true; + } - { - ReactStrictModeWarnings.discardPendingWarnings(); - } + throwIfInfiniteUpdateLoopDetected(); + } +} - return rootWorkInProgress; - } +function markRootPinged(root, pingedLanes) { + markRootPinged$1(root, pingedLanes); - function resetSuspendedWorkLoopOnUnwind(fiber) { - // Reset module-level state that was set during the render phase. - resetContextDependencies(); - resetHooksOnUnwind(fiber); - resetChildReconcilerOnUnwind(); + if (enableInfiniteRenderLoopDetection) { + // Check for recursive pings. Pings are conceptually different from updates in + // other contexts but we call it an "update" in this context because + // repeatedly pinging a suspended render can cause a recursive render loop. + // The relevant property is that it can result in a new render attempt + // being scheduled. + if (executionContext & RenderContext) { + workInProgressRootDidIncludeRecursiveRenderUpdate = true; + } else if (executionContext & CommitContext) { + didIncludeCommitPhaseUpdate = true; } - function handleThrow(root, thrownValue) { - // A component threw an exception. Usually this is because it suspended, but - // it also includes regular program errors. - // - // We're either going to unwind the stack to show a Suspense or error - // boundary, or we're going to replay the component again. Like after a - // promise resolves. - // - // Until we decide whether we're going to unwind or replay, we should preserve - // the current state of the work loop without resetting anything. - // - // If we do decide to unwind the stack, module-level variables will be reset - // in resetSuspendedWorkLoopOnUnwind. - // These should be reset immediately because they're only supposed to be set - // when React is executing user code. - resetHooksAfterThrow(); - resetCurrentFiber(); + throwIfInfiniteUpdateLoopDetected(); + } +} - { - ReactSharedInternals.owner = null; - } - - if (thrownValue === SuspenseException) { - // This is a special type of exception used for Suspense. For historical - // reasons, the rest of the Suspense implementation expects the thrown value - // to be a thenable, because before `use` existed that was the (unstable) - // API for suspending. This implementation detail can change later, once we - // deprecate the old API in favor of `use`. - thrownValue = getSuspendedThenable(); - workInProgressSuspendedReason = - shouldRemainOnPreviousScreen() && // Check if there are other pending updates that might possibly unblock this - // component from suspending. This mirrors the check in - // renderDidSuspendDelayIfPossible. We should attempt to unify them somehow. - // TODO: Consider unwinding immediately, using the - // SuspendedOnHydration mechanism. - !includesNonIdleWork(workInProgressRootSkippedLanes) && - !includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes) // Suspend work loop until data resolves - ? SuspendedOnData // Don't suspend work loop, except to check if the data has - : // immediately resolved (i.e. in a microtask). Otherwise, trigger the - // nearest Suspense fallback. - SuspendedOnImmediate; - } else if (thrownValue === SuspenseyCommitException) { - thrownValue = getSuspendedThenable(); - workInProgressSuspendedReason = SuspendedOnInstance; - } else if (thrownValue === SelectiveHydrationException) { - // An update flowed into a dehydrated boundary. Before we can apply the - // update, we need to finish hydrating. Interrupt the work-in-progress - // render so we can restart at the hydration lane. - // - // The ideal implementation would be able to switch contexts without - // unwinding the current stack. - // - // We could name this something more general but as of now it's the only - // case where we think this should happen. - workInProgressSuspendedReason = SuspendedOnHydration; - } else { - // This is a regular error. - var isWakeable = - thrownValue !== null && - typeof thrownValue === "object" && - typeof thrownValue.then === "function"; - workInProgressSuspendedReason = isWakeable // A wakeable object was thrown by a legacy Suspense implementation. - ? // This has slightly different behavior than suspending with `use`. - SuspendedOnDeprecatedThrowPromise // This is a regular error. If something earlier in the component already - : // suspended, we must clear the thenable state to unblock the work loop. - SuspendedOnError; - } - - workInProgressThrownValue = thrownValue; - var erroredWork = workInProgress; - - if (erroredWork === null) { - // This is a fatal error - workInProgressRootExitStatus = RootFatalErrored; - logUncaughtError( - root, - createCapturedValueAtFiber(thrownValue, root.current) - ); - return; +function markRootSuspended(root, suspendedLanes, spawnedLane) { + // When suspending, we should always exclude lanes that were pinged or (more + // rarely, since we try to avoid it) updated during the render phase. + suspendedLanes = removeLanes(suspendedLanes, workInProgressRootPingedLanes); + suspendedLanes = removeLanes(suspendedLanes, workInProgressRootInterleavedUpdatedLanes); + + markRootSuspended$1(root, suspendedLanes, spawnedLane); +} // This is the entry point for synchronous tasks that don't go +// through Scheduler + + +function performSyncWorkOnRoot(root, lanes) { + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } + + var didFlushPassiveEffects = flushPassiveEffects(); + + if (didFlushPassiveEffects) { + // If passive effects were flushed, exit to the outer work loop in the root + // scheduler, so we can recompute the priority. + // TODO: We don't actually need this `ensureRootIsScheduled` call because + // this path is only reachable if the root is already part of the schedule. + // I'm including it only for consistency with the other exit points from + // this function. Can address in a subsequent refactor. + ensureRootIsScheduled(root); + return null; + } + + { + syncNestedUpdateFlag(); + } + + var exitStatus = renderRootSync(root, lanes); + + if ((root.tag !== LegacyRoot) && exitStatus === RootErrored) { + // If something threw an error, try rendering one more time. We'll render + // synchronously to block concurrent data mutations, and we'll includes + // all pending updates are included. If it still fails after the second + // attempt, we'll give up and commit the resulting tree. + var originallyAttemptedLanes = lanes; + var errorRetryLanes = getLanesToRetrySynchronouslyOnError(root, originallyAttemptedLanes); + + if (errorRetryLanes !== NoLanes) { + lanes = errorRetryLanes; + exitStatus = recoverFromConcurrentError(root, originallyAttemptedLanes, errorRetryLanes); + } + } + + if (exitStatus === RootFatalErrored) { + prepareFreshStack(root, NoLanes); + markRootSuspended(root, lanes, NoLane); + ensureRootIsScheduled(root); + return null; + } + + if (exitStatus === RootDidNotComplete) { + // The render unwound without completing the tree. This happens in special + // cases where need to exit the current render without producing a + // consistent tree or committing. + markRootSuspended(root, lanes, workInProgressDeferredLane); + ensureRootIsScheduled(root); + return null; + } // We now have a consistent tree. Because this is a sync render, we + // will commit it even if something suspended. + + + var finishedWork = root.current.alternate; + root.finishedWork = finishedWork; + root.finishedLanes = lanes; + commitRoot(root, workInProgressRootRecoverableErrors, workInProgressTransitions, workInProgressRootDidIncludeRecursiveRenderUpdate, workInProgressDeferredLane); // Before exiting, make sure there's a callback scheduled for the next + // pending level. + + ensureRootIsScheduled(root); + return null; +} +function getExecutionContext() { + return executionContext; +} +function batchedUpdates(fn, a) { + { + var prevExecutionContext = executionContext; + executionContext |= BatchedContext; + + try { + return fn(a); + } finally { + executionContext = prevExecutionContext; // If there were legacy sync updates, flush them at the end of the outer + // most batchedUpdates-like method. + + if (executionContext === NoContext && // Treat `act` as if it's inside `batchedUpdates`, even in legacy mode. + !(ReactSharedInternals.isBatchingLegacy)) { + resetRenderTimer(); + flushSyncWorkOnLegacyRootsOnly(); } + } + } +} +// Returns whether the the call was during a render or not - if (erroredWork.mode & ProfileMode) { - // Record the time spent rendering before an error was thrown. This - // avoids inaccurate Profiler durations in the case of a - // suspended render. - stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true); - } +function flushSyncWork() { + if ((executionContext & (RenderContext | CommitContext)) === NoContext) { + flushSyncWorkOnAllRoots(); + return false; + } - { - markComponentRenderStopped(); + return true; +} +// hidden subtree. The stack logic is managed there because that's the only +// place that ever modifies it. Which module it lives in doesn't matter for +// performance because this function will get inlined regardless - switch (workInProgressSuspendedReason) { - case SuspendedOnError: { - markComponentErrored( - erroredWork, - thrownValue, - workInProgressRootRenderLanes - ); - break; - } +function setEntangledRenderLanes(newEntangledRenderLanes) { + entangledRenderLanes = newEntangledRenderLanes; +} +function getEntangledRenderLanes() { + return entangledRenderLanes; +} - case SuspendedOnData: - case SuspendedOnImmediate: - case SuspendedOnDeprecatedThrowPromise: - case SuspendedAndReadyToContinue: { - var wakeable = thrownValue; - markComponentSuspended( - erroredWork, - wakeable, - workInProgressRootRenderLanes - ); - break; - } - } - } - } +function resetWorkInProgressStack() { + if (workInProgress === null) return; + var interruptedWork; + + if (workInProgressSuspendedReason === NotSuspended) { + // Normal case. Work-in-progress hasn't started yet. Unwind all + // its parents. + interruptedWork = workInProgress.return; + } else { + // Work-in-progress is in suspended state. Reset the work loop and unwind + // both the suspended fiber and all its parents. + resetSuspendedWorkLoopOnUnwind(workInProgress); + interruptedWork = workInProgress; + } + + while (interruptedWork !== null) { + var current = interruptedWork.alternate; + unwindInterruptedWork(current, interruptedWork); + interruptedWork = interruptedWork.return; + } + + workInProgress = null; +} - function shouldRemainOnPreviousScreen() { - // This is asking whether it's better to suspend the transition and remain - // on the previous screen, versus showing a fallback as soon as possible. It - // takes into account both the priority of render and also whether showing a - // fallback would produce a desirable user experience. - var handler = getSuspenseHandler(); +function prepareFreshStack(root, lanes) { + root.finishedWork = null; + root.finishedLanes = NoLanes; + var timeoutHandle = root.timeoutHandle; + + if (timeoutHandle !== noTimeout) { + // The root previous suspended and scheduled a timeout to commit a fallback + // state. Now that we have additional work, cancel the timeout. + root.timeoutHandle = noTimeout; // $FlowFixMe[incompatible-call] Complains noTimeout is not a TimeoutID, despite the check above + + cancelTimeout(timeoutHandle); + } + + var cancelPendingCommit = root.cancelPendingCommit; + + if (cancelPendingCommit !== null) { + root.cancelPendingCommit = null; + cancelPendingCommit(); + } + + resetWorkInProgressStack(); + workInProgressRoot = root; + var rootWorkInProgress = createWorkInProgress(root.current, null); + workInProgress = rootWorkInProgress; + workInProgressRootRenderLanes = lanes; + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + workInProgressRootDidAttachPingListener = false; + workInProgressRootExitStatus = RootInProgress; + workInProgressRootSkippedLanes = NoLanes; + workInProgressRootInterleavedUpdatedLanes = NoLanes; + workInProgressRootPingedLanes = NoLanes; + workInProgressDeferredLane = NoLane; + workInProgressRootConcurrentErrors = null; + workInProgressRootRecoverableErrors = null; + workInProgressRootDidIncludeRecursiveRenderUpdate = false; // Get the lanes that are entangled with whatever we're about to render. We + // track these separately so we can distinguish the priority of the render + // task from the priority of the lanes it is entangled with. For example, a + // transition may not be allowed to finish unless it includes the Sync lane, + // which is currently suspended. We should be able to render the Transition + // and Sync lane in the same batch, but at Transition priority, because the + // Sync lane already suspended. + + entangledRenderLanes = getEntangledLanes(root, lanes); + finishQueueingConcurrentUpdates(); + + { + ReactStrictModeWarnings.discardPendingWarnings(); + } + + return rootWorkInProgress; +} - if (handler === null) { - // There's no Suspense boundary that can provide a fallback. We have no - // choice but to remain on the previous screen. - // NOTE: We do this even for sync updates, for lack of any better option. In - // the future, we may change how we handle this, like by putting the whole - // root into a "detached" mode. - return true; - } // TODO: Once `use` has fully replaced the `throw promise` pattern, we should - // be able to remove the equivalent check in finishConcurrentRender, and rely - // just on this one. - - if (includesOnlyTransitions(workInProgressRootRenderLanes)) { - if (getShellBoundary() === null) { - // We're rendering inside the "shell" of the app. Activating the nearest - // fallback would cause visible content to disappear. It's better to - // suspend the transition and remain on the previous screen. - return true; - } else { - // We're rendering content that wasn't part of the previous screen. - // Rather than block the transition, it's better to show a fallback as - // soon as possible. The appearance of any nested fallbacks will be - // throttled to avoid jank. - return false; +function resetSuspendedWorkLoopOnUnwind(fiber) { + // Reset module-level state that was set during the render phase. + resetContextDependencies(); + resetHooksOnUnwind(fiber); + resetChildReconcilerOnUnwind(); +} + +function handleThrow(root, thrownValue) { + // A component threw an exception. Usually this is because it suspended, but + // it also includes regular program errors. + // + // We're either going to unwind the stack to show a Suspense or error + // boundary, or we're going to replay the component again. Like after a + // promise resolves. + // + // Until we decide whether we're going to unwind or replay, we should preserve + // the current state of the work loop without resetting anything. + // + // If we do decide to unwind the stack, module-level variables will be reset + // in resetSuspendedWorkLoopOnUnwind. + // These should be reset immediately because they're only supposed to be set + // when React is executing user code. + resetHooksAfterThrow(); + resetCurrentFiber(); + + { + ReactSharedInternals.owner = null; + } + + if (thrownValue === SuspenseException) { + // This is a special type of exception used for Suspense. For historical + // reasons, the rest of the Suspense implementation expects the thrown value + // to be a thenable, because before `use` existed that was the (unstable) + // API for suspending. This implementation detail can change later, once we + // deprecate the old API in favor of `use`. + thrownValue = getSuspendedThenable(); + workInProgressSuspendedReason = shouldRemainOnPreviousScreen() && // Check if there are other pending updates that might possibly unblock this + // component from suspending. This mirrors the check in + // renderDidSuspendDelayIfPossible. We should attempt to unify them somehow. + // TODO: Consider unwinding immediately, using the + // SuspendedOnHydration mechanism. + !includesNonIdleWork(workInProgressRootSkippedLanes) && !includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes) ? // Suspend work loop until data resolves + SuspendedOnData : // Don't suspend work loop, except to check if the data has + // immediately resolved (i.e. in a microtask). Otherwise, trigger the + // nearest Suspense fallback. + SuspendedOnImmediate; + } else if (thrownValue === SuspenseyCommitException) { + thrownValue = getSuspendedThenable(); + workInProgressSuspendedReason = SuspendedOnInstance; + } else if (thrownValue === SelectiveHydrationException) { + // An update flowed into a dehydrated boundary. Before we can apply the + // update, we need to finish hydrating. Interrupt the work-in-progress + // render so we can restart at the hydration lane. + // + // The ideal implementation would be able to switch contexts without + // unwinding the current stack. + // + // We could name this something more general but as of now it's the only + // case where we think this should happen. + workInProgressSuspendedReason = SuspendedOnHydration; + } else { + // This is a regular error. + var isWakeable = thrownValue !== null && typeof thrownValue === 'object' && typeof thrownValue.then === 'function'; + workInProgressSuspendedReason = isWakeable ? // A wakeable object was thrown by a legacy Suspense implementation. + // This has slightly different behavior than suspending with `use`. + SuspendedOnDeprecatedThrowPromise : // This is a regular error. If something earlier in the component already + // suspended, we must clear the thenable state to unblock the work loop. + SuspendedOnError; + } + + workInProgressThrownValue = thrownValue; + var erroredWork = workInProgress; + + if (erroredWork === null) { + // This is a fatal error + workInProgressRootExitStatus = RootFatalErrored; + logUncaughtError(root, createCapturedValueAtFiber(thrownValue, root.current)); + return; + } + + if (erroredWork.mode & ProfileMode) { + // Record the time spent rendering before an error was thrown. This + // avoids inaccurate Profiler durations in the case of a + // suspended render. + stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true); + } + + { + markComponentRenderStopped(); + + switch (workInProgressSuspendedReason) { + case SuspendedOnError: + { + markComponentErrored(erroredWork, thrownValue, workInProgressRootRenderLanes); + break; } - } - if ( - includesOnlyRetries(workInProgressRootRenderLanes) || // In this context, an OffscreenLane counts as a Retry - // TODO: It's become increasingly clear that Retries and Offscreen are - // deeply connected. They probably can be unified further. - includesSomeLane(workInProgressRootRenderLanes, OffscreenLane) - ) { - // During a retry, we can suspend rendering if the nearest Suspense boundary - // is the boundary of the "shell", because we're guaranteed not to block - // any new content from appearing. - // - // The reason we must check if this is a retry is because it guarantees - // that suspending the work loop won't block an actual update, because - // retries don't "update" anything; they fill in fallbacks that were left - // behind by a previous transition. - return handler === getShellBoundary(); - } // For all other Lanes besides Transitions and Retries, we should not wait - // for the data to load. + case SuspendedOnData: + case SuspendedOnImmediate: + case SuspendedOnDeprecatedThrowPromise: + case SuspendedAndReadyToContinue: + { + var wakeable = thrownValue; + markComponentSuspended(erroredWork, wakeable, workInProgressRootRenderLanes); + break; + } + } + } +} +function shouldRemainOnPreviousScreen() { + // This is asking whether it's better to suspend the transition and remain + // on the previous screen, versus showing a fallback as soon as possible. It + // takes into account both the priority of render and also whether showing a + // fallback would produce a desirable user experience. + var handler = getSuspenseHandler(); + + if (handler === null) { + // There's no Suspense boundary that can provide a fallback. We have no + // choice but to remain on the previous screen. + // NOTE: We do this even for sync updates, for lack of any better option. In + // the future, we may change how we handle this, like by putting the whole + // root into a "detached" mode. + return true; + } // TODO: Once `use` has fully replaced the `throw promise` pattern, we should + // be able to remove the equivalent check in finishConcurrentRender, and rely + // just on this one. + + + if (includesOnlyTransitions(workInProgressRootRenderLanes)) { + if (getShellBoundary() === null) { + // We're rendering inside the "shell" of the app. Activating the nearest + // fallback would cause visible content to disappear. It's better to + // suspend the transition and remain on the previous screen. + return true; + } else { + // We're rendering content that wasn't part of the previous screen. + // Rather than block the transition, it's better to show a fallback as + // soon as possible. The appearance of any nested fallbacks will be + // throttled to avoid jank. return false; } + } - function pushDispatcher(container) { - var prevDispatcher = ReactSharedInternals.H; - ReactSharedInternals.H = ContextOnlyDispatcher; + if (includesOnlyRetries(workInProgressRootRenderLanes) || // In this context, an OffscreenLane counts as a Retry + // TODO: It's become increasingly clear that Retries and Offscreen are + // deeply connected. They probably can be unified further. + includesSomeLane(workInProgressRootRenderLanes, OffscreenLane)) { + // During a retry, we can suspend rendering if the nearest Suspense boundary + // is the boundary of the "shell", because we're guaranteed not to block + // any new content from appearing. + // + // The reason we must check if this is a retry is because it guarantees + // that suspending the work loop won't block an actual update, because + // retries don't "update" anything; they fill in fallbacks that were left + // behind by a previous transition. + return handler === getShellBoundary(); + } // For all other Lanes besides Transitions and Retries, we should not wait + // for the data to load. - if (prevDispatcher === null) { - // The React isomorphic package does not include a default dispatcher. - // Instead the first renderer will lazily attach one, in order to give - // nicer error messages. - return ContextOnlyDispatcher; - } else { - return prevDispatcher; + + return false; +} + +function pushDispatcher(container) { + var prevDispatcher = ReactSharedInternals.H; + ReactSharedInternals.H = ContextOnlyDispatcher; + + if (prevDispatcher === null) { + // The React isomorphic package does not include a default dispatcher. + // Instead the first renderer will lazily attach one, in order to give + // nicer error messages. + return ContextOnlyDispatcher; + } else { + return prevDispatcher; + } +} + +function popDispatcher(prevDispatcher) { + ReactSharedInternals.H = prevDispatcher; +} + +function pushCacheDispatcher() { + { + var prevCacheDispatcher = ReactSharedInternals.C; + ReactSharedInternals.C = DefaultCacheDispatcher; + return prevCacheDispatcher; + } +} + +function popCacheDispatcher(prevCacheDispatcher) { + { + ReactSharedInternals.C = prevCacheDispatcher; + } +} + +function markCommitTimeOfFallback() { + globalMostRecentFallbackTime = now$1(); +} +function markSkippedUpdateLanes(lane) { + workInProgressRootSkippedLanes = mergeLanes(lane, workInProgressRootSkippedLanes); +} +function renderDidSuspend() { + if (workInProgressRootExitStatus === RootInProgress) { + workInProgressRootExitStatus = RootSuspended; + } +} +function renderDidSuspendDelayIfPossible() { + workInProgressRootExitStatus = RootSuspendedWithDelay; // Check if there are updates that we skipped tree that might have unblocked + // this render. + + if ((includesNonIdleWork(workInProgressRootSkippedLanes) || includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes)) && workInProgressRoot !== null) { + // Mark the current render as suspended so that we switch to working on + // the updates that were skipped. Usually we only suspend at the end of + // the render phase. + // TODO: We should probably always mark the root as suspended immediately + // (inside this function), since by suspending at the end of the render + // phase introduces a potential mistake where we suspend lanes that were + // pinged or updated while we were rendering. + // TODO: Consider unwinding immediately, using the + // SuspendedOnHydration mechanism. + markRootSuspended(workInProgressRoot, workInProgressRootRenderLanes, workInProgressDeferredLane); + } +} +function renderDidError() { + if (workInProgressRootExitStatus !== RootSuspendedWithDelay) { + workInProgressRootExitStatus = RootErrored; + } +} +function queueConcurrentError(error) { + if (workInProgressRootConcurrentErrors === null) { + workInProgressRootConcurrentErrors = [error]; + } else { + workInProgressRootConcurrentErrors.push(error); + } +} // Called during render to determine if anything has suspended. +// Returns false if we're not sure. + +function renderHasNotSuspendedYet() { + // If something errored or completed, we can't really be sure, + // so those are false. + return workInProgressRootExitStatus === RootInProgress; +} // TODO: Over time, this function and renderRootConcurrent have become more +// and more similar. Not sure it makes sense to maintain forked paths. Consider +// unifying them again. + +function renderRootSync(root, lanes) { + var prevExecutionContext = executionContext; + executionContext |= RenderContext; + var prevDispatcher = pushDispatcher(); + var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack + // and prepare a fresh one. Otherwise we'll continue where we left off. + + if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { + { + if (isDevToolsPresent) { + var memoizedUpdaters = root.memoizedUpdaters; + + if (memoizedUpdaters.size > 0) { + restorePendingUpdaters(root, workInProgressRootRenderLanes); + memoizedUpdaters.clear(); + } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. + // If we bailout on this work, we'll move them back (like above). + // It's important to move them now in case the work spawns more work at the same priority with different updaters. + // That way we can keep the current update and future updates separate. + + + movePendingFibersToMemoized(root, lanes); } } - function popDispatcher(prevDispatcher) { - ReactSharedInternals.H = prevDispatcher; - } + workInProgressTransitions = getTransitionsForLanes(); + prepareFreshStack(root, lanes); + } + + { + markRenderStarted(lanes); + } + + var didSuspendInShell = false; + + outer: do { + try { + if (workInProgressSuspendedReason !== NotSuspended && workInProgress !== null) { + // The work loop is suspended. During a synchronous render, we don't + // yield to the main thread. Immediately unwind the stack. This will + // trigger either a fallback or an error boundary. + // TODO: For discrete and "default" updates (anything that's not + // flushSync), we want to wait for the microtasks the flush before + // unwinding. Will probably implement this using renderRootConcurrent, + // or merge renderRootSync and renderRootConcurrent into the same + // function and fork the behavior some other way. + var unitOfWork = workInProgress; + var thrownValue = workInProgressThrownValue; + + switch (workInProgressSuspendedReason) { + case SuspendedOnHydration: + { + // Selective hydration. An update flowed into a dehydrated tree. + // Interrupt the current render so the work loop can switch to the + // hydration lane. + resetWorkInProgressStack(); + workInProgressRootExitStatus = RootDidNotComplete; + break outer; + } + + case SuspendedOnImmediate: + case SuspendedOnData: + { + if (!didSuspendInShell && getSuspenseHandler() === null) { + didSuspendInShell = true; + } // Intentional fallthrough - function pushCacheDispatcher() { - { - var prevCacheDispatcher = ReactSharedInternals.C; - ReactSharedInternals.C = DefaultCacheDispatcher; - return prevCacheDispatcher; - } - } + } - function popCacheDispatcher(prevCacheDispatcher) { - { - ReactSharedInternals.C = prevCacheDispatcher; + default: + { + // Unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } + } } - } - function markCommitTimeOfFallback() { - globalMostRecentFallbackTime = now$1(); - } - function markSkippedUpdateLanes(lane) { - workInProgressRootSkippedLanes = mergeLanes( - lane, - workInProgressRootSkippedLanes - ); - } - function renderDidSuspend() { - if (workInProgressRootExitStatus === RootInProgress) { - workInProgressRootExitStatus = RootSuspended; - } + workLoopSync(); + break; + } catch (thrownValue) { + handleThrow(root, thrownValue); } - function renderDidSuspendDelayIfPossible() { - workInProgressRootExitStatus = RootSuspendedWithDelay; // Check if there are updates that we skipped tree that might have unblocked - // this render. + } while (true); // Check if something suspended in the shell. We use this to detect an + // infinite ping loop caused by an uncached promise. + // + // Only increment this counter once per synchronous render attempt across the + // whole tree. Even if there are many sibling components that suspend, this + // counter only gets incremented once. - if ( - (includesNonIdleWork(workInProgressRootSkippedLanes) || - includesNonIdleWork(workInProgressRootInterleavedUpdatedLanes)) && - workInProgressRoot !== null - ) { - // Mark the current render as suspended so that we switch to working on - // the updates that were skipped. Usually we only suspend at the end of - // the render phase. - // TODO: We should probably always mark the root as suspended immediately - // (inside this function), since by suspending at the end of the render - // phase introduces a potential mistake where we suspend lanes that were - // pinged or updated while we were rendering. - // TODO: Consider unwinding immediately, using the - // SuspendedOnHydration mechanism. - markRootSuspended( - workInProgressRoot, - workInProgressRootRenderLanes, - workInProgressDeferredLane - ); - } - } - function renderDidError() { - if (workInProgressRootExitStatus !== RootSuspendedWithDelay) { - workInProgressRootExitStatus = RootErrored; - } - } - function queueConcurrentError(error) { - if (workInProgressRootConcurrentErrors === null) { - workInProgressRootConcurrentErrors = [error]; - } else { - workInProgressRootConcurrentErrors.push(error); - } - } // Called during render to determine if anything has suspended. - // Returns false if we're not sure. - - function renderHasNotSuspendedYet() { - // If something errored or completed, we can't really be sure, - // so those are false. - return workInProgressRootExitStatus === RootInProgress; - } // TODO: Over time, this function and renderRootConcurrent have become more - // and more similar. Not sure it makes sense to maintain forked paths. Consider - // unifying them again. - - function renderRootSync(root, lanes) { - var prevExecutionContext = executionContext; - executionContext |= RenderContext; - var prevDispatcher = pushDispatcher(); - var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack - // and prepare a fresh one. Otherwise we'll continue where we left off. - - if ( - workInProgressRoot !== root || - workInProgressRootRenderLanes !== lanes - ) { - { - if (isDevToolsPresent) { - var memoizedUpdaters = root.memoizedUpdaters; - - if (memoizedUpdaters.size > 0) { - restorePendingUpdaters(root, workInProgressRootRenderLanes); - memoizedUpdaters.clear(); - } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. - // If we bailout on this work, we'll move them back (like above). - // It's important to move them now in case the work spawns more work at the same priority with different updaters. - // That way we can keep the current update and future updates separate. - - movePendingFibersToMemoized(root, lanes); - } - } - workInProgressTransitions = getTransitionsForLanes(); - prepareFreshStack(root, lanes); - } + if (didSuspendInShell) { + root.shellSuspendCounter++; + } - { - markRenderStarted(lanes); - } + resetContextDependencies(); + executionContext = prevExecutionContext; + popDispatcher(prevDispatcher); + popCacheDispatcher(prevCacheDispatcher); - var didSuspendInShell = false; + if (workInProgress !== null) { + // This is a sync render, so we should have finished the whole tree. + throw new Error('Cannot commit an incomplete root. This error is likely caused by a ' + 'bug in React. Please file an issue.'); + } - outer: do { - try { - if ( - workInProgressSuspendedReason !== NotSuspended && - workInProgress !== null - ) { - // The work loop is suspended. During a synchronous render, we don't - // yield to the main thread. Immediately unwind the stack. This will - // trigger either a fallback or an error boundary. - // TODO: For discrete and "default" updates (anything that's not - // flushSync), we want to wait for the microtasks the flush before - // unwinding. Will probably implement this using renderRootConcurrent, - // or merge renderRootSync and renderRootConcurrent into the same - // function and fork the behavior some other way. - var unitOfWork = workInProgress; - var thrownValue = workInProgressThrownValue; - - switch (workInProgressSuspendedReason) { - case SuspendedOnHydration: { - // Selective hydration. An update flowed into a dehydrated tree. - // Interrupt the current render so the work loop can switch to the - // hydration lane. - resetWorkInProgressStack(); - workInProgressRootExitStatus = RootDidNotComplete; - break outer; - } + { + markRenderStopped(); + } // Set this to null to indicate there's no in-progress render. - case SuspendedOnImmediate: - case SuspendedOnData: { - if (!didSuspendInShell && getSuspenseHandler() === null) { - didSuspendInShell = true; - } // Intentional fallthrough - } - default: { - // Unwind then continue with the normal work loop. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } - } - } + workInProgressRoot = null; + workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. - workLoopSync(); - break; - } catch (thrownValue) { - handleThrow(root, thrownValue); - } - } while (true); // Check if something suspended in the shell. We use this to detect an - // infinite ping loop caused by an uncached promise. - // - // Only increment this counter once per synchronous render attempt across the - // whole tree. Even if there are many sibling components that suspend, this - // counter only gets incremented once. + finishQueueingConcurrentUpdates(); + return workInProgressRootExitStatus; +} // The work loop is an extremely hot path. Tell Closure not to inline it. - if (didSuspendInShell) { - root.shellSuspendCounter++; - } +/** @noinline */ - resetContextDependencies(); - executionContext = prevExecutionContext; - popDispatcher(prevDispatcher); - popCacheDispatcher(prevCacheDispatcher); - if (workInProgress !== null) { - // This is a sync render, so we should have finished the whole tree. - throw new Error( - "Cannot commit an incomplete root. This error is likely caused by a " + - "bug in React. Please file an issue." - ); - } +function workLoopSync() { + // Perform work without checking if we need to yield between fiber. + while (workInProgress !== null) { + performUnitOfWork(workInProgress); + } +} - { - markRenderStopped(); - } // Set this to null to indicate there's no in-progress render. +function renderRootConcurrent(root, lanes) { + var prevExecutionContext = executionContext; + executionContext |= RenderContext; + var prevDispatcher = pushDispatcher(); + var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack + // and prepare a fresh one. Otherwise we'll continue where we left off. - workInProgressRoot = null; - workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. + if (workInProgressRoot !== root || workInProgressRootRenderLanes !== lanes) { + { + if (isDevToolsPresent) { + var memoizedUpdaters = root.memoizedUpdaters; - finishQueueingConcurrentUpdates(); - return workInProgressRootExitStatus; - } // The work loop is an extremely hot path. Tell Closure not to inline it. + if (memoizedUpdaters.size > 0) { + restorePendingUpdaters(root, workInProgressRootRenderLanes); + memoizedUpdaters.clear(); + } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. + // If we bailout on this work, we'll move them back (like above). + // It's important to move them now in case the work spawns more work at the same priority with different updaters. + // That way we can keep the current update and future updates separate. - /** @noinline */ - function workLoopSync() { - // Perform work without checking if we need to yield between fiber. - while (workInProgress !== null) { - performUnitOfWork(workInProgress); + movePendingFibersToMemoized(root, lanes); } } - function renderRootConcurrent(root, lanes) { - var prevExecutionContext = executionContext; - executionContext |= RenderContext; - var prevDispatcher = pushDispatcher(); - var prevCacheDispatcher = pushCacheDispatcher(); // If the root or lanes have changed, throw out the existing stack - // and prepare a fresh one. Otherwise we'll continue where we left off. + workInProgressTransitions = getTransitionsForLanes(); + resetRenderTimer(); + prepareFreshStack(root, lanes); + } - if ( - workInProgressRoot !== root || - workInProgressRootRenderLanes !== lanes - ) { - { - if (isDevToolsPresent) { - var memoizedUpdaters = root.memoizedUpdaters; - - if (memoizedUpdaters.size > 0) { - restorePendingUpdaters(root, workInProgressRootRenderLanes); - memoizedUpdaters.clear(); - } // At this point, move Fibers that scheduled the upcoming work from the Map to the Set. - // If we bailout on this work, we'll move them back (like above). - // It's important to move them now in case the work spawns more work at the same priority with different updaters. - // That way we can keep the current update and future updates separate. - - movePendingFibersToMemoized(root, lanes); - } - } + { + markRenderStarted(lanes); + } - workInProgressTransitions = getTransitionsForLanes(); - resetRenderTimer(); - prepareFreshStack(root, lanes); - } + outer: do { + try { + if (workInProgressSuspendedReason !== NotSuspended && workInProgress !== null) { + // The work loop is suspended. We need to either unwind the stack or + // replay the suspended component. + var unitOfWork = workInProgress; + var thrownValue = workInProgressThrownValue; - { - markRenderStarted(lanes); - } + resumeOrUnwind: switch (workInProgressSuspendedReason) { + case SuspendedOnError: + { + // Unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } - outer: do { - try { - if ( - workInProgressSuspendedReason !== NotSuspended && - workInProgress !== null - ) { - // The work loop is suspended. We need to either unwind the stack or - // replay the suspended component. - var unitOfWork = workInProgress; - var thrownValue = workInProgressThrownValue; - - resumeOrUnwind: switch (workInProgressSuspendedReason) { - case SuspendedOnError: { - // Unwind then continue with the normal work loop. + case SuspendedOnData: + { + var thenable = thrownValue; + + if (isThenableResolved(thenable)) { + // The data resolved. Try rendering the component again. workInProgressSuspendedReason = NotSuspended; workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + replaySuspendedUnitOfWork(unitOfWork); break; - } + } // The work loop is suspended on data. We should wait for it to + // resolve before continuing to render. + // TODO: Handle the case where the promise resolves synchronously. + // Usually this is handled when we instrument the promise to add a + // `status` field, but if the promise already has a status, we won't + // have added a listener until right here. - case SuspendedOnData: { - var thenable = thrownValue; - if (isThenableResolved(thenable)) { - // The data resolved. Try rendering the component again. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - replaySuspendedUnitOfWork(unitOfWork); - break; - } // The work loop is suspended on data. We should wait for it to - // resolve before continuing to render. - // TODO: Handle the case where the promise resolves synchronously. - // Usually this is handled when we instrument the promise to add a - // `status` field, but if the promise already has a status, we won't - // have added a listener until right here. - - var onResolution = function () { - // Check if the root is still suspended on this promise. - if ( - workInProgressSuspendedReason === SuspendedOnData && - workInProgressRoot === root - ) { - // Mark the root as ready to continue rendering. - workInProgressSuspendedReason = SuspendedAndReadyToContinue; - } // Ensure the root is scheduled. We should do this even if we're - // currently working on a different root, so that we resume - // rendering later. - - ensureRootIsScheduled(root); - }; - - thenable.then(onResolution, onResolution); - break outer; - } + var onResolution = function () { + // Check if the root is still suspended on this promise. + if (workInProgressSuspendedReason === SuspendedOnData && workInProgressRoot === root) { + // Mark the root as ready to continue rendering. + workInProgressSuspendedReason = SuspendedAndReadyToContinue; + } // Ensure the root is scheduled. We should do this even if we're + // currently working on a different root, so that we resume + // rendering later. - case SuspendedOnImmediate: { - // If this fiber just suspended, it's possible the data is already - // cached. Yield to the main thread to give it a chance to ping. If - // it does, we can retry immediately without unwinding the stack. - workInProgressSuspendedReason = SuspendedAndReadyToContinue; - break outer; - } - case SuspendedOnInstance: { - workInProgressSuspendedReason = - SuspendedOnInstanceAndReadyToContinue; - break outer; - } + ensureRootIsScheduled(root); + }; - case SuspendedAndReadyToContinue: { - var _thenable = thrownValue; + thenable.then(onResolution, onResolution); + break outer; + } - if (isThenableResolved(_thenable)) { - // The data resolved. Try rendering the component again. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - replaySuspendedUnitOfWork(unitOfWork); - } else { - // Otherwise, unwind then continue with the normal work loop. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - } + case SuspendedOnImmediate: + { + // If this fiber just suspended, it's possible the data is already + // cached. Yield to the main thread to give it a chance to ping. If + // it does, we can retry immediately without unwinding the stack. + workInProgressSuspendedReason = SuspendedAndReadyToContinue; + break outer; + } - break; + case SuspendedOnInstance: + { + workInProgressSuspendedReason = SuspendedOnInstanceAndReadyToContinue; + break outer; + } + + case SuspendedAndReadyToContinue: + { + var _thenable = thrownValue; + + if (isThenableResolved(_thenable)) { + // The data resolved. Try rendering the component again. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + replaySuspendedUnitOfWork(unitOfWork); + } else { + // Otherwise, unwind then continue with the normal work loop. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); } - case SuspendedOnInstanceAndReadyToContinue: { - switch (workInProgress.tag) { - case HostComponent: - case HostHoistable: - case HostSingleton: { + break; + } + + case SuspendedOnInstanceAndReadyToContinue: + { + switch (workInProgress.tag) { + case HostComponent: + case HostHoistable: + case HostSingleton: + { // Before unwinding the stack, check one more time if the // instance is ready. It may have loaded when React yielded to // the main thread. @@ -27895,4153 +23941,3584 @@ to return true:wantsResponderID| | break; } - default: { + default: + { // This will fail gracefully but it's not correct, so log a // warning in dev. if (true) { - error( - "Unexpected type of fiber triggered a suspensey commit. " + - "This is a bug in React." - ); + error('Unexpected type of fiber triggered a suspensey commit. ' + 'This is a bug in React.'); } break; } - } // Otherwise, unwind then continue with the normal work loop. - - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } - - case SuspendedOnDeprecatedThrowPromise: { - // Suspended by an old implementation that uses the `throw promise` - // pattern. The newer replaying behavior can cause subtle issues - // like infinite ping loops. So we maintain the old behavior and - // always unwind. - workInProgressSuspendedReason = NotSuspended; - workInProgressThrownValue = null; - throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); - break; - } + } // Otherwise, unwind then continue with the normal work loop. - case SuspendedOnHydration: { - // Selective hydration. An update flowed into a dehydrated tree. - // Interrupt the current render so the work loop can switch to the - // hydration lane. - resetWorkInProgressStack(); - workInProgressRootExitStatus = RootDidNotComplete; - break outer; - } - default: { - throw new Error( - "Unexpected SuspendedReason. This is a bug in React." - ); - } + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; } - } - - if (true && ReactSharedInternals.actQueue !== null) { - // `act` special case: If we're inside an `act` scope, don't consult - // `shouldYield`. Always keep working until the render is complete. - // This is not just an optimization: in a unit test environment, we - // can't trust the result of `shouldYield`, because the host I/O is - // likely mocked. - workLoopSync(); - } else { - workLoopConcurrent(); - } - break; - } catch (thrownValue) { - handleThrow(root, thrownValue); - } - } while (true); + case SuspendedOnDeprecatedThrowPromise: + { + // Suspended by an old implementation that uses the `throw promise` + // pattern. The newer replaying behavior can cause subtle issues + // like infinite ping loops. So we maintain the old behavior and + // always unwind. + workInProgressSuspendedReason = NotSuspended; + workInProgressThrownValue = null; + throwAndUnwindWorkLoop(root, unitOfWork, thrownValue); + break; + } - resetContextDependencies(); - popDispatcher(prevDispatcher); - popCacheDispatcher(prevCacheDispatcher); - executionContext = prevExecutionContext; + case SuspendedOnHydration: + { + // Selective hydration. An update flowed into a dehydrated tree. + // Interrupt the current render so the work loop can switch to the + // hydration lane. + resetWorkInProgressStack(); + workInProgressRootExitStatus = RootDidNotComplete; + break outer; + } - if (workInProgress !== null) { - // Still work remaining. - { - markRenderYielded(); + default: + { + throw new Error('Unexpected SuspendedReason. This is a bug in React.'); + } } + } - return RootInProgress; + if (true && ReactSharedInternals.actQueue !== null) { + // `act` special case: If we're inside an `act` scope, don't consult + // `shouldYield`. Always keep working until the render is complete. + // This is not just an optimization: in a unit test environment, we + // can't trust the result of `shouldYield`, because the host I/O is + // likely mocked. + workLoopSync(); } else { - // Completed the tree. - { - markRenderStopped(); - } // Set this to null to indicate there's no in-progress render. - - workInProgressRoot = null; - workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. - - finishQueueingConcurrentUpdates(); // Return the final exit status. - - return workInProgressRootExitStatus; + workLoopConcurrent(); } - } - /** @noinline */ - function workLoopConcurrent() { - // Perform work until Scheduler asks us to yield - while (workInProgress !== null && !shouldYield()) { - // $FlowFixMe[incompatible-call] found when upgrading Flow - performUnitOfWork(workInProgress); - } + break; + } catch (thrownValue) { + handleThrow(root, thrownValue); } + } while (true); - function performUnitOfWork(unitOfWork) { - // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. - var current = unitOfWork.alternate; - setCurrentFiber(unitOfWork); - var next; + resetContextDependencies(); + popDispatcher(prevDispatcher); + popCacheDispatcher(prevCacheDispatcher); + executionContext = prevExecutionContext; - if ((unitOfWork.mode & ProfileMode) !== NoMode) { - startProfilerTimer(unitOfWork); - next = beginWork(current, unitOfWork, entangledRenderLanes); - stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); - } else { - next = beginWork(current, unitOfWork, entangledRenderLanes); - } - resetCurrentFiber(); - unitOfWork.memoizedProps = unitOfWork.pendingProps; + if (workInProgress !== null) { + // Still work remaining. + { + markRenderYielded(); + } - if (next === null) { - // If this doesn't spawn new work, complete the current work. - completeUnitOfWork(unitOfWork); - } else { - workInProgress = next; - } + return RootInProgress; + } else { + // Completed the tree. + { + markRenderStopped(); + } // Set this to null to indicate there's no in-progress render. - { - ReactSharedInternals.owner = null; - } - } - function replaySuspendedUnitOfWork(unitOfWork) { - // This is a fork of performUnitOfWork specifcally for replaying a fiber that - // just suspended. - // - var current = unitOfWork.alternate; - setCurrentFiber(unitOfWork); - var next; - setCurrentFiber(unitOfWork); - var isProfilingMode = (unitOfWork.mode & ProfileMode) !== NoMode; + workInProgressRoot = null; + workInProgressRootRenderLanes = NoLanes; // It's safe to process the queue now that the render phase is complete. - if (isProfilingMode) { - startProfilerTimer(unitOfWork); - } + finishQueueingConcurrentUpdates(); // Return the final exit status. - switch (unitOfWork.tag) { - case SimpleMemoComponent: - case FunctionComponent: { - // Resolve `defaultProps`. This logic is copied from `beginWork`. - // TODO: Consider moving this switch statement into that module. Also, - // could maybe use this as an opportunity to say `use` doesn't work with - // `defaultProps` :) - var Component = unitOfWork.type; - var unresolvedProps = unitOfWork.pendingProps; - var resolvedProps = - disableDefaultPropsExceptForClasses || - unitOfWork.elementType === Component - ? unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - Component, - unresolvedProps - ); - var context; + return workInProgressRootExitStatus; + } +} +/** @noinline */ - { - var unmaskedContext = getUnmaskedContext( - unitOfWork, - Component, - true - ); - context = getMaskedContext(unitOfWork, unmaskedContext); - } - next = replayFunctionComponent( - current, - unitOfWork, - resolvedProps, - Component, - context, - workInProgressRootRenderLanes - ); - break; - } +function workLoopConcurrent() { + // Perform work until Scheduler asks us to yield + while (workInProgress !== null && !shouldYield()) { + // $FlowFixMe[incompatible-call] found when upgrading Flow + performUnitOfWork(workInProgress); + } +} - case ForwardRef: { - // Resolve `defaultProps`. This logic is copied from `beginWork`. - // TODO: Consider moving this switch statement into that module. Also, - // could maybe use this as an opportunity to say `use` doesn't work with - // `defaultProps` :) - var _Component = unitOfWork.type.render; - var _unresolvedProps = unitOfWork.pendingProps; - - var _resolvedProps = - disableDefaultPropsExceptForClasses || - unitOfWork.elementType === _Component - ? _unresolvedProps - : resolveDefaultPropsOnNonClassComponent( - _Component, - _unresolvedProps - ); - - next = replayFunctionComponent( - current, - unitOfWork, - _resolvedProps, - _Component, - unitOfWork.ref, - workInProgressRootRenderLanes - ); - break; - } +function performUnitOfWork(unitOfWork) { + // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. + var current = unitOfWork.alternate; + setCurrentFiber(unitOfWork); + var next; + + if ((unitOfWork.mode & ProfileMode) !== NoMode) { + startProfilerTimer(unitOfWork); + next = beginWork(current, unitOfWork, entangledRenderLanes); + stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); + } else { + next = beginWork(current, unitOfWork, entangledRenderLanes); + } + + resetCurrentFiber(); + unitOfWork.memoizedProps = unitOfWork.pendingProps; + + if (next === null) { + // If this doesn't spawn new work, complete the current work. + completeUnitOfWork(unitOfWork); + } else { + workInProgress = next; + } + + { + ReactSharedInternals.owner = null; + } +} - case HostComponent: { - // Some host components are stateful (that's how we implement form - // actions) but we don't bother to reuse the memoized state because it's - // not worth the extra code. The main reason to reuse the previous hooks - // is to reuse uncached promises, but we happen to know that the only - // promises that a host component might suspend on are definitely cached - // because they are controlled by us. So don't bother. - resetHooksOnUnwind(unitOfWork); // Fallthrough to the next branch. - } +function replaySuspendedUnitOfWork(unitOfWork) { + // This is a fork of performUnitOfWork specifcally for replaying a fiber that + // just suspended. + // + var current = unitOfWork.alternate; + setCurrentFiber(unitOfWork); + var next; + setCurrentFiber(unitOfWork); + var isProfilingMode = (unitOfWork.mode & ProfileMode) !== NoMode; + + if (isProfilingMode) { + startProfilerTimer(unitOfWork); + } + + switch (unitOfWork.tag) { + case SimpleMemoComponent: + case FunctionComponent: + { + // Resolve `defaultProps`. This logic is copied from `beginWork`. + // TODO: Consider moving this switch statement into that module. Also, + // could maybe use this as an opportunity to say `use` doesn't work with + // `defaultProps` :) + var Component = unitOfWork.type; + var unresolvedProps = unitOfWork.pendingProps; + var resolvedProps = disableDefaultPropsExceptForClasses || unitOfWork.elementType === Component ? unresolvedProps : resolveDefaultPropsOnNonClassComponent(Component, unresolvedProps); + var context; - default: { - // Other types besides function components are reset completely before - // being replayed. Currently this only happens when a Usable type is - // reconciled — the reconciler will suspend. - // - // We reset the fiber back to its original state; however, this isn't - // a full "unwind" because we're going to reuse the promises that were - // reconciled previously. So it's intentional that we don't call - // resetSuspendedWorkLoopOnUnwind here. - unwindInterruptedWork(current, unitOfWork); - unitOfWork = workInProgress = resetWorkInProgress( - unitOfWork, - entangledRenderLanes - ); - next = beginWork(current, unitOfWork, entangledRenderLanes); - break; + { + var unmaskedContext = getUnmaskedContext(unitOfWork, Component, true); + context = getMaskedContext(unitOfWork, unmaskedContext); } + + next = replayFunctionComponent(current, unitOfWork, resolvedProps, Component, context, workInProgressRootRenderLanes); + break; } - if (isProfilingMode) { - stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); - } // The begin phase finished successfully without suspending. Return to the - // normal work loop. + case ForwardRef: + { + // Resolve `defaultProps`. This logic is copied from `beginWork`. + // TODO: Consider moving this switch statement into that module. Also, + // could maybe use this as an opportunity to say `use` doesn't work with + // `defaultProps` :) + var _Component = unitOfWork.type.render; + var _unresolvedProps = unitOfWork.pendingProps; - resetCurrentFiber(); - unitOfWork.memoizedProps = unitOfWork.pendingProps; + var _resolvedProps = disableDefaultPropsExceptForClasses || unitOfWork.elementType === _Component ? _unresolvedProps : resolveDefaultPropsOnNonClassComponent(_Component, _unresolvedProps); - if (next === null) { - // If this doesn't spawn new work, complete the current work. - completeUnitOfWork(unitOfWork); - } else { - workInProgress = next; + next = replayFunctionComponent(current, unitOfWork, _resolvedProps, _Component, unitOfWork.ref, workInProgressRootRenderLanes); + break; } + case HostComponent: { - ReactSharedInternals.owner = null; - } - } - - function throwAndUnwindWorkLoop(root, unitOfWork, thrownValue) { - // This is a fork of performUnitOfWork specifcally for unwinding a fiber - // that threw an exception. - // - // Return to the normal work loop. This will unwind the stack, and potentially - // result in showing a fallback. - resetSuspendedWorkLoopOnUnwind(unitOfWork); - var returnFiber = unitOfWork.return; - - try { - // Find and mark the nearest Suspense or error boundary that can handle - // this "exception". - var didFatal = throwException( - root, - returnFiber, - unitOfWork, - thrownValue, - workInProgressRootRenderLanes - ); - - if (didFatal) { - panicOnRootError(root, thrownValue); - return; - } - } catch (error) { - // We had trouble processing the error. An example of this happening is - // when accessing the `componentDidCatch` property of an error boundary - // throws an error. A weird edge case. There's a regression test for this. - // To prevent an infinite loop, bubble the error up to the next parent. - if (returnFiber !== null) { - workInProgress = returnFiber; - throw error; - } else { - panicOnRootError(root, thrownValue); - return; - } + // Some host components are stateful (that's how we implement form + // actions) but we don't bother to reuse the memoized state because it's + // not worth the extra code. The main reason to reuse the previous hooks + // is to reuse uncached promises, but we happen to know that the only + // promises that a host component might suspend on are definitely cached + // because they are controlled by us. So don't bother. + resetHooksOnUnwind(unitOfWork); // Fallthrough to the next branch. } - if (unitOfWork.flags & Incomplete) { - // Unwind the stack until we reach the nearest boundary. - unwindUnitOfWork(unitOfWork); - } else { - // Although the fiber suspended, we're intentionally going to commit it in - // an inconsistent state. We can do this safely in cases where we know the - // inconsistent tree will be hidden. + default: + { + // Other types besides function components are reset completely before + // being replayed. Currently this only happens when a Usable type is + // reconciled — the reconciler will suspend. // - // This currently only applies to Legacy Suspense implementation, but we may - // port a version of this to concurrent roots, too, when performing a - // synchronous render. Because that will allow us to mutate the tree as we - // go instead of buffering mutations until the end. Though it's unclear if - // this particular path is how that would be implemented. - completeUnitOfWork(unitOfWork); + // We reset the fiber back to its original state; however, this isn't + // a full "unwind" because we're going to reuse the promises that were + // reconciled previously. So it's intentional that we don't call + // resetSuspendedWorkLoopOnUnwind here. + unwindInterruptedWork(current, unitOfWork); + unitOfWork = workInProgress = resetWorkInProgress(unitOfWork, entangledRenderLanes); + next = beginWork(current, unitOfWork, entangledRenderLanes); + break; } - } - - function panicOnRootError(root, error) { - // There's no ancestor that can handle this exception. This should never - // happen because the root is supposed to capture all errors that weren't - // caught by an error boundary. This is a fatal error, or panic condition, - // because we've run out of ways to recover. - workInProgressRootExitStatus = RootFatalErrored; - logUncaughtError(root, createCapturedValueAtFiber(error, root.current)); // Set `workInProgress` to null. This represents advancing to the next - // sibling, or the parent if there are no siblings. But since the root - // has no siblings nor a parent, we set it to null. Usually this is - // handled by `completeUnitOfWork` or `unwindWork`, but since we're - // intentionally not calling those, we need set it here. - // TODO: Consider calling `unwindWork` to pop the contexts. - - workInProgress = null; - } - - function completeUnitOfWork(unitOfWork) { - // Attempt to complete the current unit of work, then move to the next - // sibling. If there are no more siblings, return to the parent fiber. - var completedWork = unitOfWork; - - do { - { - if ((completedWork.flags & Incomplete) !== NoFlags$1) { - // NOTE: If we re-enable sibling prerendering in some cases, this branch - // is where we would switch to the unwinding path. - error( - "Internal React error: Expected this fiber to be complete, but " + - "it isn't. It should have been unwound. This is a bug in React." - ); - } - } // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. + } - var current = completedWork.alternate; - var returnFiber = completedWork.return; - setCurrentFiber(completedWork); - var next = void 0; - - if ((completedWork.mode & ProfileMode) === NoMode) { - next = completeWork(current, completedWork, entangledRenderLanes); - } else { - startProfilerTimer(completedWork); - next = completeWork(current, completedWork, entangledRenderLanes); // Update render duration assuming we didn't error. + if (isProfilingMode) { + stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true); + } // The begin phase finished successfully without suspending. Return to the + // normal work loop. - stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); - } - resetCurrentFiber(); + resetCurrentFiber(); + unitOfWork.memoizedProps = unitOfWork.pendingProps; - if (next !== null) { - // Completing this fiber spawned new work. Work on that next. - workInProgress = next; - return; - } + if (next === null) { + // If this doesn't spawn new work, complete the current work. + completeUnitOfWork(unitOfWork); + } else { + workInProgress = next; + } - var siblingFiber = completedWork.sibling; + { + ReactSharedInternals.owner = null; + } +} - if (siblingFiber !== null) { - // If there is more work to do in this returnFiber, do that next. - workInProgress = siblingFiber; - return; - } // Otherwise, return to the parent - // $FlowFixMe[incompatible-type] we bail out when we get a null +function throwAndUnwindWorkLoop(root, unitOfWork, thrownValue) { + // This is a fork of performUnitOfWork specifcally for unwinding a fiber + // that threw an exception. + // + // Return to the normal work loop. This will unwind the stack, and potentially + // result in showing a fallback. + resetSuspendedWorkLoopOnUnwind(unitOfWork); + var returnFiber = unitOfWork.return; + + try { + // Find and mark the nearest Suspense or error boundary that can handle + // this "exception". + var didFatal = throwException(root, returnFiber, unitOfWork, thrownValue, workInProgressRootRenderLanes); + + if (didFatal) { + panicOnRootError(root, thrownValue); + return; + } + } catch (error) { + // We had trouble processing the error. An example of this happening is + // when accessing the `componentDidCatch` property of an error boundary + // throws an error. A weird edge case. There's a regression test for this. + // To prevent an infinite loop, bubble the error up to the next parent. + if (returnFiber !== null) { + workInProgress = returnFiber; + throw error; + } else { + panicOnRootError(root, thrownValue); + return; + } + } + + if (unitOfWork.flags & Incomplete) { + // Unwind the stack until we reach the nearest boundary. + unwindUnitOfWork(unitOfWork); + } else { + // Although the fiber suspended, we're intentionally going to commit it in + // an inconsistent state. We can do this safely in cases where we know the + // inconsistent tree will be hidden. + // + // This currently only applies to Legacy Suspense implementation, but we may + // port a version of this to concurrent roots, too, when performing a + // synchronous render. Because that will allow us to mutate the tree as we + // go instead of buffering mutations until the end. Though it's unclear if + // this particular path is how that would be implemented. + completeUnitOfWork(unitOfWork); + } +} - completedWork = returnFiber; // Update the next thing we're working on in case something throws. +function panicOnRootError(root, error) { + // There's no ancestor that can handle this exception. This should never + // happen because the root is supposed to capture all errors that weren't + // caught by an error boundary. This is a fatal error, or panic condition, + // because we've run out of ways to recover. + workInProgressRootExitStatus = RootFatalErrored; + logUncaughtError(root, createCapturedValueAtFiber(error, root.current)); // Set `workInProgress` to null. This represents advancing to the next + // sibling, or the parent if there are no siblings. But since the root + // has no siblings nor a parent, we set it to null. Usually this is + // handled by `completeUnitOfWork` or `unwindWork`, but since we're + // intentionally not calling those, we need set it here. + // TODO: Consider calling `unwindWork` to pop the contexts. + + workInProgress = null; +} - workInProgress = completedWork; - } while (completedWork !== null); // We've reached the root. +function completeUnitOfWork(unitOfWork) { + // Attempt to complete the current unit of work, then move to the next + // sibling. If there are no more siblings, return to the parent fiber. + var completedWork = unitOfWork; - if (workInProgressRootExitStatus === RootInProgress) { - workInProgressRootExitStatus = RootCompleted; + do { + { + if ((completedWork.flags & Incomplete) !== NoFlags$1) { + // NOTE: If we re-enable sibling prerendering in some cases, this branch + // is where we would switch to the unwinding path. + error('Internal React error: Expected this fiber to be complete, but ' + "it isn't. It should have been unwound. This is a bug in React."); } - } - - function unwindUnitOfWork(unitOfWork) { - var incompleteWork = unitOfWork; + } // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. - do { - // The current, flushed, state of this fiber is the alternate. Ideally - // nothing should rely on this, but relying on it here means that we don't - // need an additional field on the work in progress. - var current = incompleteWork.alternate; // This fiber did not complete because something threw. Pop values off - // the stack without entering the complete phase. If this is a boundary, - // capture values if possible. - - var next = unwindWork(current, incompleteWork); // Because this fiber did not complete, don't reset its lanes. - - if (next !== null) { - // Found a boundary that can handle this exception. Re-renter the - // begin phase. This branch will return us to the normal work loop. - // - // Since we're restarting, remove anything that is not a host effect - // from the effect tag. - next.flags &= HostEffectMask; - workInProgress = next; - return; - } // Keep unwinding until we reach either a boundary or the root. - - if ((incompleteWork.mode & ProfileMode) !== NoMode) { - // Record the render duration for the fiber that errored. - stopProfilerTimerIfRunningAndRecordDelta(incompleteWork, false); // Include the time spent working on failed children before continuing. - var actualDuration = incompleteWork.actualDuration; - var child = incompleteWork.child; + var current = completedWork.alternate; + var returnFiber = completedWork.return; + setCurrentFiber(completedWork); + var next = void 0; - while (child !== null) { - // $FlowFixMe[unsafe-addition] addition with possible null/undefined value - actualDuration += child.actualDuration; - child = child.sibling; - } - - incompleteWork.actualDuration = actualDuration; - } // TODO: Once we stop prerendering siblings, instead of resetting the parent - // of the node being unwound, we should be able to reset node itself as we - // unwind the stack. Saves an additional null check. - - var returnFiber = incompleteWork.return; - - if (returnFiber !== null) { - // Mark the parent fiber as incomplete and clear its subtree flags. - // TODO: Once we stop prerendering siblings, we may be able to get rid of - // the Incomplete flag because unwinding to the nearest boundary will - // happen synchronously. - returnFiber.flags |= Incomplete; - returnFiber.subtreeFlags = NoFlags$1; - returnFiber.deletions = null; - } // NOTE: If we re-enable sibling prerendering in some cases, here we - // would switch to the normal completion path: check if a sibling - // exists, and if so, begin work on it. - // Otherwise, return to the parent - // $FlowFixMe[incompatible-type] we bail out when we get a null - - incompleteWork = returnFiber; // Update the next thing we're working on in case something throws. - - workInProgress = incompleteWork; - } while (incompleteWork !== null); // We've unwound all the way to the root. - - workInProgressRootExitStatus = RootDidNotComplete; - workInProgress = null; - } - - function commitRoot( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - spawnedLane - ) { - // TODO: This no longer makes any sense. We already wrap the mutation and - // layout phases. Should be able to remove. - var prevTransition = ReactSharedInternals.T; - var previousUpdateLanePriority = getCurrentUpdatePriority(); - - try { - setCurrentUpdatePriority(DiscreteEventPriority); - ReactSharedInternals.T = null; - commitRootImpl( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - previousUpdateLanePriority, - spawnedLane - ); - } finally { - ReactSharedInternals.T = prevTransition; - setCurrentUpdatePriority(previousUpdateLanePriority); - } + if ((completedWork.mode & ProfileMode) === NoMode) { + next = completeWork(current, completedWork, entangledRenderLanes); + } else { + startProfilerTimer(completedWork); + next = completeWork(current, completedWork, entangledRenderLanes); // Update render duration assuming we didn't error. - return null; + stopProfilerTimerIfRunningAndRecordDelta(completedWork, false); } - function commitRootImpl( - root, - recoverableErrors, - transitions, - didIncludeRenderPhaseUpdate, - renderPriorityLevel, - spawnedLane - ) { - do { - // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which - // means `flushPassiveEffects` will sometimes result in additional - // passive effects. So we need to keep flushing in a loop until there are - // no more pending effects. - // TODO: Might be better if `flushPassiveEffects` did not automatically - // flush synchronous work at the end, to avoid factoring hazards like this. - flushPassiveEffects(); - } while (rootWithPendingPassiveEffects !== null); + resetCurrentFiber(); - flushRenderPhaseStrictModeWarningsInDEV(); + if (next !== null) { + // Completing this fiber spawned new work. Work on that next. + workInProgress = next; + return; + } - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error("Should not already be working."); - } + var siblingFiber = completedWork.sibling; - var finishedWork = root.finishedWork; - var lanes = root.finishedLanes; + if (siblingFiber !== null) { + // If there is more work to do in this returnFiber, do that next. + workInProgress = siblingFiber; + return; + } // Otherwise, return to the parent + // $FlowFixMe[incompatible-type] we bail out when we get a null - { - markCommitStarted(lanes); - } - if (finishedWork === null) { - { - markCommitStopped(); - } + completedWork = returnFiber; // Update the next thing we're working on in case something throws. - return null; - } else { - { - if (lanes === NoLanes) { - error( - "root.finishedLanes should not be empty during a commit. This is a " + - "bug in React." - ); - } - } - } + workInProgress = completedWork; + } while (completedWork !== null); // We've reached the root. - root.finishedWork = null; - root.finishedLanes = NoLanes; - - if (finishedWork === root.current) { - throw new Error( - "Cannot commit the same tree as before. This error is likely caused by " + - "a bug in React. Please file an issue." - ); - } // commitRoot never returns a continuation; it always finishes synchronously. - // So we can clear these now to allow a new callback to be scheduled. - - root.callbackNode = null; - root.callbackPriority = NoLane; - root.cancelPendingCommit = null; // Check which lanes no longer have any work scheduled on them, and mark - // those as finished. - - var remainingLanes = mergeLanes( - finishedWork.lanes, - finishedWork.childLanes - ); // Make sure to account for lanes that were updated by a concurrent event - // during the render phase; don't mark them as finished. - - var concurrentlyUpdatedLanes = getConcurrentlyUpdatedLanes(); - remainingLanes = mergeLanes(remainingLanes, concurrentlyUpdatedLanes); - markRootFinished(root, remainingLanes, spawnedLane); // Reset this before firing side effects so we can detect recursive updates. - - didIncludeCommitPhaseUpdate = false; - - if (root === workInProgressRoot) { - // We can reset these now that they are finished. - workInProgressRoot = null; - workInProgress = null; - workInProgressRootRenderLanes = NoLanes; - } // If there are pending passive effects, schedule a callback to process them. - // Do this as early as possible, so it is queued before anything else that - // might get scheduled in the commit phase. (See #16714.) - // TODO: Delete all other places that schedule the passive effect callback - // They're redundant. - - if ( - (finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1 || - (finishedWork.flags & PassiveMask) !== NoFlags$1 - ) { - if (!rootDoesHavePassiveEffects) { - rootDoesHavePassiveEffects = true; - pendingPassiveEffectsRemainingLanes = remainingLanes; // workInProgressTransitions might be overwritten, so we want - // to store it in pendingPassiveTransitions until they get processed - // We need to pass this through as an argument to commitRoot - // because workInProgressTransitions might have changed between - // the previous render and commit if we throttle the commit - // with setTimeout - - pendingPassiveTransitions = transitions; - scheduleCallback(NormalPriority$1, function () { - flushPassiveEffects(); // This render triggered passive effects: release the root cache pool - // *after* passive effects fire to avoid freeing a cache pool that may - // be referenced by a node in the tree (HostRoot, Cache boundary etc) - return null; - }); - } - } // Check if there are any effects in the whole tree. - // TODO: This is left over from the effect list implementation, where we had - // to check for the existence of `firstEffect` to satisfy Flow. I think the - // only other reason this optimization exists is because it affects profiling. - // Reconsider whether this is necessary. - - var subtreeHasEffects = - (finishedWork.subtreeFlags & - (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== - NoFlags$1; - var rootHasEffect = - (finishedWork.flags & - (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== - NoFlags$1; - - if (subtreeHasEffects || rootHasEffect) { - var prevTransition = ReactSharedInternals.T; - ReactSharedInternals.T = null; - var previousPriority = getCurrentUpdatePriority(); - setCurrentUpdatePriority(DiscreteEventPriority); - var prevExecutionContext = executionContext; - executionContext |= CommitContext; // Reset this to null before calling lifecycles + if (workInProgressRootExitStatus === RootInProgress) { + workInProgressRootExitStatus = RootCompleted; + } +} - { - ReactSharedInternals.owner = null; - } // The commit phase is broken into several sub-phases. We do a separate pass - // of the effect list for each phase: all mutation effects come before all - // layout effects, and so on. - // The first phase a "before mutation" phase. We use this phase to read the - // state of the host tree right before we mutate it. This is where - // getSnapshotBeforeUpdate is called. +function unwindUnitOfWork(unitOfWork) { + var incompleteWork = unitOfWork; - commitBeforeMutationEffects(root, finishedWork); + do { + // The current, flushed, state of this fiber is the alternate. Ideally + // nothing should rely on this, but relying on it here means that we don't + // need an additional field on the work in progress. + var current = incompleteWork.alternate; // This fiber did not complete because something threw. Pop values off + // the stack without entering the complete phase. If this is a boundary, + // capture values if possible. - { - // Mark the current commit time to be shared by all Profilers in this - // batch. This enables them to be grouped later. - recordCommitTime(); - } // The next phase is the mutation phase, where we mutate the host tree. + var next = unwindWork(current, incompleteWork); // Because this fiber did not complete, don't reset its lanes. - commitMutationEffects(root, finishedWork, lanes); - // the mutation phase, so that the previous tree is still current during - // componentWillUnmount, but before the layout phase, so that the finished - // work is current during componentDidMount/Update. + if (next !== null) { + // Found a boundary that can handle this exception. Re-renter the + // begin phase. This branch will return us to the normal work loop. + // + // Since we're restarting, remove anything that is not a host effect + // from the effect tag. + next.flags &= HostEffectMask; + workInProgress = next; + return; + } // Keep unwinding until we reach either a boundary or the root. - root.current = finishedWork; // The next phase is the layout phase, where we call effects that read - { - markLayoutEffectsStarted(lanes); - } + if ((incompleteWork.mode & ProfileMode) !== NoMode) { + // Record the render duration for the fiber that errored. + stopProfilerTimerIfRunningAndRecordDelta(incompleteWork, false); // Include the time spent working on failed children before continuing. - commitLayoutEffects(finishedWork, root, lanes); + var actualDuration = incompleteWork.actualDuration; + var child = incompleteWork.child; - { - markLayoutEffectsStopped(); - } // Tell Scheduler to yield at the end of the frame, so the browser has an - // opportunity to paint. + while (child !== null) { + // $FlowFixMe[unsafe-addition] addition with possible null/undefined value + actualDuration += child.actualDuration; + child = child.sibling; + } - requestPaint(); - executionContext = prevExecutionContext; // Reset the priority to the previous non-sync value. + incompleteWork.actualDuration = actualDuration; + } // TODO: Once we stop prerendering siblings, instead of resetting the parent + // of the node being unwound, we should be able to reset node itself as we + // unwind the stack. Saves an additional null check. - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; - } else { - // No effects. - root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were - // no effects. - // TODO: Maybe there's a better way to report this. - { - recordCommitTime(); - } - } + var returnFiber = incompleteWork.return; - var rootDidHavePassiveEffects = rootDoesHavePassiveEffects; + if (returnFiber !== null) { + // Mark the parent fiber as incomplete and clear its subtree flags. + // TODO: Once we stop prerendering siblings, we may be able to get rid of + // the Incomplete flag because unwinding to the nearest boundary will + // happen synchronously. + returnFiber.flags |= Incomplete; + returnFiber.subtreeFlags = NoFlags$1; + returnFiber.deletions = null; + } // NOTE: If we re-enable sibling prerendering in some cases, here we + // would switch to the normal completion path: check if a sibling + // exists, and if so, begin work on it. + // Otherwise, return to the parent + // $FlowFixMe[incompatible-type] we bail out when we get a null - if (rootDoesHavePassiveEffects) { - // This commit has passive effects. Stash a reference to them. But don't - // schedule a callback until after flushing layout work. - rootDoesHavePassiveEffects = false; - rootWithPendingPassiveEffects = root; - pendingPassiveEffectsLanes = lanes; - } else { - // There were no passive effects, so we can immediately release the cache - // pool for this render. - releaseRootPooledCache(root, remainingLanes); - { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = null; - } - } // Read this again, since an effect might have updated it + incompleteWork = returnFiber; // Update the next thing we're working on in case something throws. - remainingLanes = root.pendingLanes; // Check if there's remaining work on this root - // TODO: This is part of the `componentDidCatch` implementation. Its purpose - // is to detect whether something might have called setState inside - // `componentDidCatch`. The mechanism is known to be flawed because `setState` - // inside `componentDidCatch` is itself flawed — that's why we recommend - // `getDerivedStateFromError` instead. However, it could be improved by - // checking if remainingLanes includes Sync work, instead of whether there's - // any work remaining at all (which would also include stuff like Suspense - // retries or transitions). It's been like this for a while, though, so fixing - // it probably isn't that urgent. + workInProgress = incompleteWork; + } while (incompleteWork !== null); // We've unwound all the way to the root. - if (remainingLanes === NoLanes) { - // If there's no remaining work, we can clear the set of already failed - // error boundaries. - legacyErrorBoundariesThatAlreadyFailed = null; - } - { - if (!rootDidHavePassiveEffects) { - commitDoubleInvokeEffectsInDEV(root, false); - } - } + workInProgressRootExitStatus = RootDidNotComplete; + workInProgress = null; +} - onCommitRoot(finishedWork.stateNode, renderPriorityLevel); +function commitRoot(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, spawnedLane) { + // TODO: This no longer makes any sense. We already wrap the mutation and + // layout phases. Should be able to remove. + var prevTransition = ReactSharedInternals.T; + var previousUpdateLanePriority = getCurrentUpdatePriority(); + + try { + setCurrentUpdatePriority(DiscreteEventPriority); + ReactSharedInternals.T = null; + commitRootImpl(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, previousUpdateLanePriority, spawnedLane); + } finally { + ReactSharedInternals.T = prevTransition; + setCurrentUpdatePriority(previousUpdateLanePriority); + } + + return null; +} - { - if (isDevToolsPresent) { - root.memoizedUpdaters.clear(); - } - } - // additional work on this root is scheduled. +function commitRootImpl(root, recoverableErrors, transitions, didIncludeRenderPhaseUpdate, renderPriorityLevel, spawnedLane) { + do { + // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which + // means `flushPassiveEffects` will sometimes result in additional + // passive effects. So we need to keep flushing in a loop until there are + // no more pending effects. + // TODO: Might be better if `flushPassiveEffects` did not automatically + // flush synchronous work at the end, to avoid factoring hazards like this. + flushPassiveEffects(); + } while (rootWithPendingPassiveEffects !== null); - ensureRootIsScheduled(root); + flushRenderPhaseStrictModeWarningsInDEV(); - if (recoverableErrors !== null) { - // There were errors during this render, but recovered from them without - // needing to surface it to the UI. We log them here. - var onRecoverableError = root.onRecoverableError; + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Should not already be working.'); + } - for (var i = 0; i < recoverableErrors.length; i++) { - var recoverableError = recoverableErrors[i]; - var errorInfo = makeErrorInfo(recoverableError.stack); - onRecoverableError(recoverableError.value, errorInfo); - } - } // If the passive effects are the result of a discrete render, flush them - // synchronously at the end of the current task so that the result is - // immediately observable. Otherwise, we assume that they are not - // order-dependent and do not need to be observed by external systems, so we - // can wait until after paint. - // TODO: We can optimize this by not scheduling the callback earlier. Since we - // currently schedule the callback in multiple places, will wait until those - // are consolidated. + var finishedWork = root.finishedWork; + var lanes = root.finishedLanes; - if ( - includesSyncLane(pendingPassiveEffectsLanes) && - root.tag !== LegacyRoot - ) { - flushPassiveEffects(); - } // Read this again, since a passive effect might have updated it - - remainingLanes = root.pendingLanes; // Check if this render scheduled a cascading synchronous update. This is a - // heurstic to detect infinite update loops. We are intentionally excluding - // hydration lanes in this check, because render triggered by selective - // hydration is conceptually not an update. - - if ( - // Check if there was a recursive update spawned by this render, in either - // the render phase or the commit phase. We track these explicitly because - // we can't infer from the remaining lanes alone. - (enableInfiniteRenderLoopDetection && - (didIncludeRenderPhaseUpdate || didIncludeCommitPhaseUpdate)) || // Was the finished render the result of an update (not hydration)? - (includesSomeLane(lanes, UpdateLanes) && // Did it schedule a sync update? - includesSomeLane(remainingLanes, SyncUpdateLanes)) - ) { - { - markNestedUpdateScheduled(); - } // Count the number of times the root synchronously re-renders without - // finishing. If there are too many, it indicates an infinite update loop. + { + markCommitStarted(lanes); + } - if (root === rootWithNestedUpdates) { - nestedUpdateCount++; - } else { - nestedUpdateCount = 0; - rootWithNestedUpdates = root; - } - } else { - nestedUpdateCount = 0; - } // If layout work was scheduled, flush it now. + if (finishedWork === null) { - flushSyncWorkOnAllRoots(); + { + markCommitStopped(); + } - { - markCommitStopped(); + return null; + } else { + { + if (lanes === NoLanes) { + error('root.finishedLanes should not be empty during a commit. This is a ' + 'bug in React.'); } - - return null; } + } - function makeErrorInfo(componentStack) { - var errorInfo = { - componentStack: componentStack - }; + root.finishedWork = null; + root.finishedLanes = NoLanes; - { - Object.defineProperty(errorInfo, "digest", { - get: function () { - error( - 'You are accessing "digest" from the errorInfo object passed to onRecoverableError.' + - " This property is no longer provided as part of errorInfo but can be accessed as a property" + - " of the Error instance itself." - ); - } - }); - } + if (finishedWork === root.current) { + throw new Error('Cannot commit the same tree as before. This error is likely caused by ' + 'a bug in React. Please file an issue.'); + } // commitRoot never returns a continuation; it always finishes synchronously. + // So we can clear these now to allow a new callback to be scheduled. - return errorInfo; - } - function releaseRootPooledCache(root, remainingLanes) { - { - var pooledCacheLanes = (root.pooledCacheLanes &= remainingLanes); + root.callbackNode = null; + root.callbackPriority = NoLane; + root.cancelPendingCommit = null; // Check which lanes no longer have any work scheduled on them, and mark + // those as finished. - if (pooledCacheLanes === NoLanes) { - // None of the remaining work relies on the cache pool. Clear it so - // subsequent requests get a new cache - var pooledCache = root.pooledCache; + var remainingLanes = mergeLanes(finishedWork.lanes, finishedWork.childLanes); // Make sure to account for lanes that were updated by a concurrent event + // during the render phase; don't mark them as finished. - if (pooledCache != null) { - root.pooledCache = null; - releaseCache(pooledCache); - } - } - } - } + var concurrentlyUpdatedLanes = getConcurrentlyUpdatedLanes(); + remainingLanes = mergeLanes(remainingLanes, concurrentlyUpdatedLanes); + markRootFinished(root, remainingLanes, spawnedLane); // Reset this before firing side effects so we can detect recursive updates. - function flushPassiveEffects() { - // Returns whether passive effects were flushed. - // TODO: Combine this check with the one in flushPassiveEFfectsImpl. We should - // probably just combine the two functions. I believe they were only separate - // in the first place because we used to wrap it with - // `Scheduler.runWithPriority`, which accepts a function. But now we track the - // priority within React itself, so we can mutate the variable directly. - if (rootWithPendingPassiveEffects !== null) { - // Cache the root since rootWithPendingPassiveEffects is cleared in - // flushPassiveEffectsImpl - var root = rootWithPendingPassiveEffects; // Cache and clear the remaining lanes flag; it must be reset since this - // method can be called from various places, not always from commitRoot - // where the remaining lanes are known + didIncludeCommitPhaseUpdate = false; - var remainingLanes = pendingPassiveEffectsRemainingLanes; - pendingPassiveEffectsRemainingLanes = NoLanes; - var renderPriority = lanesToEventPriority(pendingPassiveEffectsLanes); - var priority = lowerEventPriority(DefaultEventPriority, renderPriority); - var prevTransition = ReactSharedInternals.T; - var previousPriority = getCurrentUpdatePriority(); + if (root === workInProgressRoot) { + // We can reset these now that they are finished. + workInProgressRoot = null; + workInProgress = null; + workInProgressRootRenderLanes = NoLanes; + } // If there are pending passive effects, schedule a callback to process them. + // Do this as early as possible, so it is queued before anything else that + // might get scheduled in the commit phase. (See #16714.) + // TODO: Delete all other places that schedule the passive effect callback + // They're redundant. - try { - setCurrentUpdatePriority(priority); - ReactSharedInternals.T = null; - return flushPassiveEffectsImpl(); - } finally { - setCurrentUpdatePriority(previousPriority); - ReactSharedInternals.T = prevTransition; // Once passive effects have run for the tree - giving components a - // chance to retain cache instances they use - release the pooled - // cache at the root (if there is one) - releaseRootPooledCache(root, remainingLanes); - } - } + if ((finishedWork.subtreeFlags & PassiveMask) !== NoFlags$1 || (finishedWork.flags & PassiveMask) !== NoFlags$1) { + if (!rootDoesHavePassiveEffects) { + rootDoesHavePassiveEffects = true; + pendingPassiveEffectsRemainingLanes = remainingLanes; // workInProgressTransitions might be overwritten, so we want + // to store it in pendingPassiveTransitions until they get processed + // We need to pass this through as an argument to commitRoot + // because workInProgressTransitions might have changed between + // the previous render and commit if we throttle the commit + // with setTimeout - return false; - } - function enqueuePendingPassiveProfilerEffect(fiber) { - { - pendingPassiveProfilerEffects.push(fiber); + pendingPassiveTransitions = transitions; + scheduleCallback(NormalPriority$1, function () { + flushPassiveEffects(); // This render triggered passive effects: release the root cache pool + // *after* passive effects fire to avoid freeing a cache pool that may + // be referenced by a node in the tree (HostRoot, Cache boundary etc) - if (!rootDoesHavePassiveEffects) { - rootDoesHavePassiveEffects = true; - scheduleCallback(NormalPriority$1, function () { - flushPassiveEffects(); - return null; - }); - } - } + return null; + }); } + } // Check if there are any effects in the whole tree. + // TODO: This is left over from the effect list implementation, where we had + // to check for the existence of `firstEffect` to satisfy Flow. I think the + // only other reason this optimization exists is because it affects profiling. + // Reconsider whether this is necessary. - function flushPassiveEffectsImpl() { - if (rootWithPendingPassiveEffects === null) { - return false; - } // Cache and clear the transitions flag - var transitions = pendingPassiveTransitions; - pendingPassiveTransitions = null; - var root = rootWithPendingPassiveEffects; - var lanes = pendingPassiveEffectsLanes; - rootWithPendingPassiveEffects = null; // TODO: This is sometimes out of sync with rootWithPendingPassiveEffects. - // Figure out why and fix it. It's not causing any known issues (probably - // because it's only used for profiling), but it's a refactor hazard. + var subtreeHasEffects = (finishedWork.subtreeFlags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags$1; + var rootHasEffect = (finishedWork.flags & (BeforeMutationMask | MutationMask | LayoutMask | PassiveMask)) !== NoFlags$1; - pendingPassiveEffectsLanes = NoLanes; + if (subtreeHasEffects || rootHasEffect) { + var prevTransition = ReactSharedInternals.T; + ReactSharedInternals.T = null; + var previousPriority = getCurrentUpdatePriority(); + setCurrentUpdatePriority(DiscreteEventPriority); + var prevExecutionContext = executionContext; + executionContext |= CommitContext; // Reset this to null before calling lifecycles - if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { - throw new Error( - "Cannot flush passive effects while already rendering." - ); - } + { + ReactSharedInternals.owner = null; + } // The commit phase is broken into several sub-phases. We do a separate pass + // of the effect list for each phase: all mutation effects come before all + // layout effects, and so on. + // The first phase a "before mutation" phase. We use this phase to read the + // state of the host tree right before we mutate it. This is where + // getSnapshotBeforeUpdate is called. - { - isFlushingPassiveEffects = true; - didScheduleUpdateDuringPassiveEffects = false; - } - { - markPassiveEffectsStarted(lanes); - } + commitBeforeMutationEffects(root, finishedWork); - var prevExecutionContext = executionContext; - executionContext |= CommitContext; - commitPassiveUnmountEffects(root.current); - commitPassiveMountEffects(root, root.current, lanes, transitions); // TODO: Move to commitPassiveMountEffects + { + // Mark the current commit time to be shared by all Profilers in this + // batch. This enables them to be grouped later. + recordCommitTime(); + } // The next phase is the mutation phase, where we mutate the host tree. - { - var profilerEffects = pendingPassiveProfilerEffects; - pendingPassiveProfilerEffects = []; - for (var i = 0; i < profilerEffects.length; i++) { - var fiber = profilerEffects[i]; - commitPassiveEffectDurations(root, fiber); - } - } + commitMutationEffects(root, finishedWork, lanes); + // the mutation phase, so that the previous tree is still current during + // componentWillUnmount, but before the layout phase, so that the finished + // work is current during componentDidMount/Update. - { - markPassiveEffectsStopped(); - } + root.current = finishedWork; // The next phase is the layout phase, where we call effects that read - { - commitDoubleInvokeEffectsInDEV(root, true); - } + { + markLayoutEffectsStarted(lanes); + } - executionContext = prevExecutionContext; - flushSyncWorkOnAllRoots(); + commitLayoutEffects(finishedWork, root, lanes); - { - // If additional passive effects were scheduled, increment a counter. If this - // exceeds the limit, we'll fire a warning. - if (didScheduleUpdateDuringPassiveEffects) { - if (root === rootWithPassiveNestedUpdates) { - nestedPassiveUpdateCount++; - } else { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = root; - } - } else { - nestedPassiveUpdateCount = 0; - } + { + markLayoutEffectsStopped(); + } // Tell Scheduler to yield at the end of the frame, so the browser has an + // opportunity to paint. - isFlushingPassiveEffects = false; - didScheduleUpdateDuringPassiveEffects = false; - } // TODO: Move to commitPassiveMountEffects - onPostCommitRoot(root); + requestPaint(); + executionContext = prevExecutionContext; // Reset the priority to the previous non-sync value. - { - var stateNode = root.current.stateNode; - stateNode.effectDuration = 0; - stateNode.passiveEffectDuration = 0; - } + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; + } else { + // No effects. + root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were + // no effects. + // TODO: Maybe there's a better way to report this. - return true; + { + recordCommitTime(); } + } - function isAlreadyFailedLegacyErrorBoundary(instance) { - return ( - legacyErrorBoundariesThatAlreadyFailed !== null && - legacyErrorBoundariesThatAlreadyFailed.has(instance) - ); - } - function markLegacyErrorBoundaryAsFailed(instance) { - if (legacyErrorBoundariesThatAlreadyFailed === null) { - legacyErrorBoundariesThatAlreadyFailed = new Set([instance]); - } else { - legacyErrorBoundariesThatAlreadyFailed.add(instance); - } + var rootDidHavePassiveEffects = rootDoesHavePassiveEffects; + + if (rootDoesHavePassiveEffects) { + // This commit has passive effects. Stash a reference to them. But don't + // schedule a callback until after flushing layout work. + rootDoesHavePassiveEffects = false; + rootWithPendingPassiveEffects = root; + pendingPassiveEffectsLanes = lanes; + } else { + // There were no passive effects, so we can immediately release the cache + // pool for this render. + releaseRootPooledCache(root, remainingLanes); + + { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = null; } + } // Read this again, since an effect might have updated it - function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) { - var errorInfo = createCapturedValueAtFiber(error, sourceFiber); - var update = createRootErrorUpdate( - rootFiber.stateNode, - errorInfo, - SyncLane - ); - var root = enqueueUpdate(rootFiber, update, SyncLane); - if (root !== null) { - markRootUpdated(root, SyncLane); - ensureRootIsScheduled(root); - } + remainingLanes = root.pendingLanes; // Check if there's remaining work on this root + // TODO: This is part of the `componentDidCatch` implementation. Its purpose + // is to detect whether something might have called setState inside + // `componentDidCatch`. The mechanism is known to be flawed because `setState` + // inside `componentDidCatch` is itself flawed — that's why we recommend + // `getDerivedStateFromError` instead. However, it could be improved by + // checking if remainingLanes includes Sync work, instead of whether there's + // any work remaining at all (which would also include stuff like Suspense + // retries or transitions). It's been like this for a while, though, so fixing + // it probably isn't that urgent. + + if (remainingLanes === NoLanes) { + // If there's no remaining work, we can clear the set of already failed + // error boundaries. + legacyErrorBoundariesThatAlreadyFailed = null; + } + + { + if (!rootDidHavePassiveEffects) { + commitDoubleInvokeEffectsInDEV(root, false); } + } - function captureCommitPhaseError( - sourceFiber, - nearestMountedAncestor, - error$1 - ) { - { - setIsRunningInsertionEffect(false); - } + onCommitRoot(finishedWork.stateNode, renderPriorityLevel); - if (sourceFiber.tag === HostRoot) { - // Error was thrown at the root. There is no parent, so the root - // itself should capture it. - captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error$1); - return; - } + { + if (isDevToolsPresent) { + root.memoizedUpdaters.clear(); + } + } + // additional work on this root is scheduled. - var fiber = nearestMountedAncestor; - while (fiber !== null) { - if (fiber.tag === HostRoot) { - captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error$1); - return; - } else if (fiber.tag === ClassComponent) { - var ctor = fiber.type; - var instance = fiber.stateNode; + ensureRootIsScheduled(root); - if ( - typeof ctor.getDerivedStateFromError === "function" || - (typeof instance.componentDidCatch === "function" && - !isAlreadyFailedLegacyErrorBoundary(instance)) - ) { - var errorInfo = createCapturedValueAtFiber(error$1, sourceFiber); - var update = createClassErrorUpdate(SyncLane); - var root = enqueueUpdate(fiber, update, SyncLane); - - if (root !== null) { - initializeClassErrorUpdate(update, root, fiber, errorInfo); - markRootUpdated(root, SyncLane); - ensureRootIsScheduled(root); - } + if (recoverableErrors !== null) { + // There were errors during this render, but recovered from them without + // needing to surface it to the UI. We log them here. + var onRecoverableError = root.onRecoverableError; - return; - } - } + for (var i = 0; i < recoverableErrors.length; i++) { + var recoverableError = recoverableErrors[i]; + var errorInfo = makeErrorInfo(recoverableError.stack); + onRecoverableError(recoverableError.value, errorInfo); + } + } // If the passive effects are the result of a discrete render, flush them + // synchronously at the end of the current task so that the result is + // immediately observable. Otherwise, we assume that they are not + // order-dependent and do not need to be observed by external systems, so we + // can wait until after paint. + // TODO: We can optimize this by not scheduling the callback earlier. Since we + // currently schedule the callback in multiple places, will wait until those + // are consolidated. - fiber = fiber.return; - } - { - error( - "Internal React error: Attempted to capture a commit phase error " + - "inside a detached tree. This indicates a bug in React. Potential " + - "causes include deleting the same fiber more than once, committing an " + - "already-finished tree, or an inconsistent return pointer.\n\n" + - "Error message:\n\n%s", - error$1 - ); - } - } - function attachPingListener(root, wakeable, lanes) { - // Attach a ping listener - // - // The data might resolve before we have a chance to commit the fallback. Or, - // in the case of a refresh, we'll never commit a fallback. So we need to - // attach a listener now. When it resolves ("pings"), we can decide whether to - // try rendering the tree again. - // - // Only attach a listener if one does not already exist for the lanes - // we're currently rendering (which acts like a "thread ID" here). - // - // We only need to do this in concurrent mode. Legacy Suspense always - // commits fallbacks synchronously, so there are no pings. - var pingCache = root.pingCache; - var threadIDs; - - if (pingCache === null) { - pingCache = root.pingCache = new PossiblyWeakMap(); - threadIDs = new Set(); - pingCache.set(wakeable, threadIDs); - } else { - threadIDs = pingCache.get(wakeable); + if (includesSyncLane(pendingPassiveEffectsLanes) && (root.tag !== LegacyRoot)) { + flushPassiveEffects(); + } // Read this again, since a passive effect might have updated it - if (threadIDs === undefined) { - threadIDs = new Set(); - pingCache.set(wakeable, threadIDs); - } - } - if (!threadIDs.has(lanes)) { - workInProgressRootDidAttachPingListener = true; // Memoize using the thread ID to prevent redundant listeners. + remainingLanes = root.pendingLanes; // Check if this render scheduled a cascading synchronous update. This is a + // heurstic to detect infinite update loops. We are intentionally excluding + // hydration lanes in this check, because render triggered by selective + // hydration is conceptually not an update. - threadIDs.add(lanes); - var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes); + if ( // Check if there was a recursive update spawned by this render, in either + // the render phase or the commit phase. We track these explicitly because + // we can't infer from the remaining lanes alone. + enableInfiniteRenderLoopDetection && (didIncludeRenderPhaseUpdate || didIncludeCommitPhaseUpdate) || // Was the finished render the result of an update (not hydration)? + includesSomeLane(lanes, UpdateLanes) && // Did it schedule a sync update? + includesSomeLane(remainingLanes, SyncUpdateLanes)) { + { + markNestedUpdateScheduled(); + } // Count the number of times the root synchronously re-renders without + // finishing. If there are too many, it indicates an infinite update loop. - { - if (isDevToolsPresent) { - // If we have pending work still, restore the original updaters - restorePendingUpdaters(root, lanes); - } - } - wakeable.then(ping, ping); - } + if (root === rootWithNestedUpdates) { + nestedUpdateCount++; + } else { + nestedUpdateCount = 0; + rootWithNestedUpdates = root; } + } else { + nestedUpdateCount = 0; + } // If layout work was scheduled, flush it now. - function pingSuspendedRoot(root, wakeable, pingedLanes) { - var pingCache = root.pingCache; - if (pingCache !== null) { - // The wakeable resolved, so we no longer need to memoize, because it will - // never be thrown again. - pingCache.delete(wakeable); - } + flushSyncWorkOnAllRoots(); - markRootPinged(root, pingedLanes); - warnIfSuspenseResolutionNotWrappedWithActDEV(root); + { + markCommitStopped(); + } - if ( - workInProgressRoot === root && - isSubsetOfLanes(workInProgressRootRenderLanes, pingedLanes) - ) { - // Received a ping at the same priority level at which we're currently - // rendering. We might want to restart this render. This should mirror - // the logic of whether or not a root suspends once it completes. - // TODO: If we're rendering sync either due to Sync, Batched or expired, - // we should probably never restart. - // If we're suspended with delay, or if it's a retry, we'll always suspend - // so we can always restart. - if ( - workInProgressRootExitStatus === RootSuspendedWithDelay || - (workInProgressRootExitStatus === RootSuspended && - includesOnlyRetries(workInProgressRootRenderLanes) && - now$1() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) - ) { - // Force a restart from the root by unwinding the stack. Unless this is - // being called from the render phase, because that would cause a crash. - if ((executionContext & RenderContext) === NoContext) { - prepareFreshStack(root, NoLanes); - } - } else { - // Even though we can't restart right now, we might get an - // opportunity later. So we mark this render as having a ping. - workInProgressRootPingedLanes = mergeLanes( - workInProgressRootPingedLanes, - pingedLanes - ); - } + return null; +} + +function makeErrorInfo(componentStack) { + var errorInfo = { + componentStack: componentStack + }; + + { + Object.defineProperty(errorInfo, 'digest', { + get: function () { + error('You are accessing "digest" from the errorInfo object passed to onRecoverableError.' + ' This property is no longer provided as part of errorInfo but can be accessed as a property' + ' of the Error instance itself.'); } + }); + } - ensureRootIsScheduled(root); - } + return errorInfo; +} - function retryTimedOutBoundary(boundaryFiber, retryLane) { - // The boundary fiber (a Suspense component or SuspenseList component) - // previously was rendered in its fallback state. One of the promises that - // suspended it has resolved, which means at least part of the tree was - // likely unblocked. Try rendering again, at a new lanes. - if (retryLane === NoLane) { - // TODO: Assign this to `suspenseState.retryLane`? to avoid - // unnecessary entanglement? - retryLane = requestRetryLane(boundaryFiber); - } // TODO: Special case idle priority? +function releaseRootPooledCache(root, remainingLanes) { + { + var pooledCacheLanes = root.pooledCacheLanes &= remainingLanes; - var root = enqueueConcurrentRenderForLane(boundaryFiber, retryLane); + if (pooledCacheLanes === NoLanes) { + // None of the remaining work relies on the cache pool. Clear it so + // subsequent requests get a new cache + var pooledCache = root.pooledCache; - if (root !== null) { - markRootUpdated(root, retryLane); - ensureRootIsScheduled(root); + if (pooledCache != null) { + root.pooledCache = null; + releaseCache(pooledCache); } } + } +} - function retryDehydratedSuspenseBoundary(boundaryFiber) { - var suspenseState = boundaryFiber.memoizedState; - var retryLane = NoLane; - - if (suspenseState !== null) { - retryLane = suspenseState.retryLane; - } +function flushPassiveEffects() { + // Returns whether passive effects were flushed. + // TODO: Combine this check with the one in flushPassiveEFfectsImpl. We should + // probably just combine the two functions. I believe they were only separate + // in the first place because we used to wrap it with + // `Scheduler.runWithPriority`, which accepts a function. But now we track the + // priority within React itself, so we can mutate the variable directly. + if (rootWithPendingPassiveEffects !== null) { + // Cache the root since rootWithPendingPassiveEffects is cleared in + // flushPassiveEffectsImpl + var root = rootWithPendingPassiveEffects; // Cache and clear the remaining lanes flag; it must be reset since this + // method can be called from various places, not always from commitRoot + // where the remaining lanes are known + + var remainingLanes = pendingPassiveEffectsRemainingLanes; + pendingPassiveEffectsRemainingLanes = NoLanes; + var renderPriority = lanesToEventPriority(pendingPassiveEffectsLanes); + var priority = lowerEventPriority(DefaultEventPriority, renderPriority); + var prevTransition = ReactSharedInternals.T; + var previousPriority = getCurrentUpdatePriority(); + + try { + setCurrentUpdatePriority(priority); + ReactSharedInternals.T = null; + return flushPassiveEffectsImpl(); + } finally { + setCurrentUpdatePriority(previousPriority); + ReactSharedInternals.T = prevTransition; // Once passive effects have run for the tree - giving components a + // chance to retain cache instances they use - release the pooled + // cache at the root (if there is one) + + releaseRootPooledCache(root, remainingLanes); + } + } + + return false; +} +function enqueuePendingPassiveProfilerEffect(fiber) { + { + pendingPassiveProfilerEffects.push(fiber); - retryTimedOutBoundary(boundaryFiber, retryLane); + if (!rootDoesHavePassiveEffects) { + rootDoesHavePassiveEffects = true; + scheduleCallback(NormalPriority$1, function () { + flushPassiveEffects(); + return null; + }); } - function resolveRetryWakeable(boundaryFiber, wakeable) { - var retryLane = NoLane; // Default + } +} - var retryCache; +function flushPassiveEffectsImpl() { + if (rootWithPendingPassiveEffects === null) { + return false; + } // Cache and clear the transitions flag - switch (boundaryFiber.tag) { - case SuspenseComponent: - retryCache = boundaryFiber.stateNode; - var suspenseState = boundaryFiber.memoizedState; - if (suspenseState !== null) { - retryLane = suspenseState.retryLane; - } + var transitions = pendingPassiveTransitions; + pendingPassiveTransitions = null; + var root = rootWithPendingPassiveEffects; + var lanes = pendingPassiveEffectsLanes; + rootWithPendingPassiveEffects = null; // TODO: This is sometimes out of sync with rootWithPendingPassiveEffects. + // Figure out why and fix it. It's not causing any known issues (probably + // because it's only used for profiling), but it's a refactor hazard. - break; + pendingPassiveEffectsLanes = NoLanes; - case SuspenseListComponent: - retryCache = boundaryFiber.stateNode; - break; + if ((executionContext & (RenderContext | CommitContext)) !== NoContext) { + throw new Error('Cannot flush passive effects while already rendering.'); + } - case OffscreenComponent: { - var instance = boundaryFiber.stateNode; - retryCache = instance._retryCache; - break; - } + { + isFlushingPassiveEffects = true; + didScheduleUpdateDuringPassiveEffects = false; + } - default: - throw new Error( - "Pinged unknown suspense boundary type. " + - "This is probably a bug in React." - ); - } + { + markPassiveEffectsStarted(lanes); + } - if (retryCache !== null) { - // The wakeable resolved, so we no longer need to memoize, because it will - // never be thrown again. - retryCache.delete(wakeable); - } + var prevExecutionContext = executionContext; + executionContext |= CommitContext; + commitPassiveUnmountEffects(root.current); + commitPassiveMountEffects(root, root.current, lanes, transitions); // TODO: Move to commitPassiveMountEffects - retryTimedOutBoundary(boundaryFiber, retryLane); + { + var profilerEffects = pendingPassiveProfilerEffects; + pendingPassiveProfilerEffects = []; + + for (var i = 0; i < profilerEffects.length; i++) { + var fiber = profilerEffects[i]; + commitPassiveEffectDurations(root, fiber); } - function throwIfInfiniteUpdateLoopDetected() { - if (nestedUpdateCount > NESTED_UPDATE_LIMIT) { - nestedUpdateCount = 0; - nestedPassiveUpdateCount = 0; - rootWithNestedUpdates = null; - rootWithPassiveNestedUpdates = null; - - if (enableInfiniteRenderLoopDetection) { - if (executionContext & RenderContext && workInProgressRoot !== null) { - // We're in the render phase. Disable the concurrent error recovery - // mechanism to ensure that the error we're about to throw gets handled. - // We need it to trigger the nearest error boundary so that the infinite - // update loop is broken. - workInProgressRoot.errorRecoveryDisabledLanes = mergeLanes( - workInProgressRoot.errorRecoveryDisabledLanes, - workInProgressRootRenderLanes - ); - } - } + } - throw new Error( - "Maximum update depth exceeded. This can happen when a component " + - "repeatedly calls setState inside componentWillUpdate or " + - "componentDidUpdate. React limits the number of nested updates to " + - "prevent infinite loops." - ); - } + { + markPassiveEffectsStopped(); + } - { - if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) { - nestedPassiveUpdateCount = 0; - rootWithPassiveNestedUpdates = null; + { + commitDoubleInvokeEffectsInDEV(root, true); + } - error( - "Maximum update depth exceeded. This can happen when a component " + - "calls setState inside useEffect, but useEffect either doesn't " + - "have a dependency array, or one of the dependencies changes on " + - "every render." - ); - } - } - } + executionContext = prevExecutionContext; + flushSyncWorkOnAllRoots(); - function flushRenderPhaseStrictModeWarningsInDEV() { - { - ReactStrictModeWarnings.flushLegacyContextWarning(); - ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings(); - } - } - - function recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - parentFiber, - isInStrictMode - ) { - if ( - (parentFiber.subtreeFlags & (PlacementDEV | Visibility)) === - NoFlags$1 - ) { - // Parent's descendants have already had effects double invoked. - // Early exit to avoid unnecessary tree traversal. - return; + { + // If additional passive effects were scheduled, increment a counter. If this + // exceeds the limit, we'll fire a warning. + if (didScheduleUpdateDuringPassiveEffects) { + if (root === rootWithPassiveNestedUpdates) { + nestedPassiveUpdateCount++; + } else { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = root; } + } else { + nestedPassiveUpdateCount = 0; + } - var child = parentFiber.child; + isFlushingPassiveEffects = false; + didScheduleUpdateDuringPassiveEffects = false; + } // TODO: Move to commitPassiveMountEffects - while (child !== null) { - doubleInvokeEffectsInDEVIfNecessary(root, child, isInStrictMode); - child = child.sibling; - } - } // Unconditionally disconnects and connects passive and layout effects. - function doubleInvokeEffectsOnFiber(root, fiber) { - var shouldDoubleInvokePassiveEffects = - arguments.length > 2 && arguments[2] !== undefined - ? arguments[2] - : true; - disappearLayoutEffects(fiber); + onPostCommitRoot(root); - if (shouldDoubleInvokePassiveEffects) { - disconnectPassiveEffect(fiber); - } + { + var stateNode = root.current.stateNode; + stateNode.effectDuration = 0; + stateNode.passiveEffectDuration = 0; + } - reappearLayoutEffects(root, fiber.alternate, fiber, false); + return true; +} - if (shouldDoubleInvokePassiveEffects) { - reconnectPassiveEffects(root, fiber, NoLanes, null, false); - } - } +function isAlreadyFailedLegacyErrorBoundary(instance) { + return legacyErrorBoundariesThatAlreadyFailed !== null && legacyErrorBoundariesThatAlreadyFailed.has(instance); +} +function markLegacyErrorBoundaryAsFailed(instance) { + if (legacyErrorBoundariesThatAlreadyFailed === null) { + legacyErrorBoundariesThatAlreadyFailed = new Set([instance]); + } else { + legacyErrorBoundariesThatAlreadyFailed.add(instance); + } +} - function doubleInvokeEffectsInDEVIfNecessary( - root, - fiber, - parentIsInStrictMode - ) { - var isStrictModeFiber = fiber.type === REACT_STRICT_MODE_TYPE; - var isInStrictMode = parentIsInStrictMode || isStrictModeFiber; // First case: the fiber **is not** of type OffscreenComponent. No - // special rules apply to double invoking effects. +function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) { + var errorInfo = createCapturedValueAtFiber(error, sourceFiber); + var update = createRootErrorUpdate(rootFiber.stateNode, errorInfo, SyncLane); + var root = enqueueUpdate(rootFiber, update, SyncLane); - if (fiber.tag !== OffscreenComponent) { - if (fiber.flags & PlacementDEV) { - setCurrentFiber(fiber); + if (root !== null) { + markRootUpdated(root, SyncLane); + ensureRootIsScheduled(root); + } +} - if (isInStrictMode) { - doubleInvokeEffectsOnFiber( - root, - fiber, - (fiber.mode & NoStrictPassiveEffectsMode) === NoMode - ); - } +function captureCommitPhaseError(sourceFiber, nearestMountedAncestor, error$1) { + { + setIsRunningInsertionEffect(false); + } + + if (sourceFiber.tag === HostRoot) { + // Error was thrown at the root. There is no parent, so the root + // itself should capture it. + captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error$1); + return; + } + + var fiber = nearestMountedAncestor; + + while (fiber !== null) { + if (fiber.tag === HostRoot) { + captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error$1); + return; + } else if (fiber.tag === ClassComponent) { + var ctor = fiber.type; + var instance = fiber.stateNode; + + if (typeof ctor.getDerivedStateFromError === 'function' || typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance)) { + var errorInfo = createCapturedValueAtFiber(error$1, sourceFiber); + var update = createClassErrorUpdate(SyncLane); + var root = enqueueUpdate(fiber, update, SyncLane); - resetCurrentFiber(); - } else { - recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - fiber, - isInStrictMode - ); + if (root !== null) { + initializeClassErrorUpdate(update, root, fiber, errorInfo); + markRootUpdated(root, SyncLane); + ensureRootIsScheduled(root); } return; - } // Second case: the fiber **is** of type OffscreenComponent. - // This branch contains cases specific to Offscreen. + } + } - if (fiber.memoizedState === null) { - // Only consider Offscreen that is visible. - // TODO (Offscreen) Handle manual mode. - setCurrentFiber(fiber); + fiber = fiber.return; + } - if (isInStrictMode && fiber.flags & Visibility) { - // Double invoke effects on Offscreen's subtree only - // if it is visible and its visibility has changed. - doubleInvokeEffectsOnFiber(root, fiber); - } else if (fiber.subtreeFlags & PlacementDEV) { - // Something in the subtree could have been suspended. - // We need to continue traversal and find newly inserted fibers. - recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - fiber, - isInStrictMode - ); - } + { + error('Internal React error: Attempted to capture a commit phase error ' + 'inside a detached tree. This indicates a bug in React. Potential ' + 'causes include deleting the same fiber more than once, committing an ' + 'already-finished tree, or an inconsistent return pointer.\n\n' + 'Error message:\n\n%s', error$1); + } +} +function attachPingListener(root, wakeable, lanes) { + // Attach a ping listener + // + // The data might resolve before we have a chance to commit the fallback. Or, + // in the case of a refresh, we'll never commit a fallback. So we need to + // attach a listener now. When it resolves ("pings"), we can decide whether to + // try rendering the tree again. + // + // Only attach a listener if one does not already exist for the lanes + // we're currently rendering (which acts like a "thread ID" here). + // + // We only need to do this in concurrent mode. Legacy Suspense always + // commits fallbacks synchronously, so there are no pings. + var pingCache = root.pingCache; + var threadIDs; + + if (pingCache === null) { + pingCache = root.pingCache = new PossiblyWeakMap(); + threadIDs = new Set(); + pingCache.set(wakeable, threadIDs); + } else { + threadIDs = pingCache.get(wakeable); + + if (threadIDs === undefined) { + threadIDs = new Set(); + pingCache.set(wakeable, threadIDs); + } + } + + if (!threadIDs.has(lanes)) { + workInProgressRootDidAttachPingListener = true; // Memoize using the thread ID to prevent redundant listeners. + + threadIDs.add(lanes); + var ping = pingSuspendedRoot.bind(null, root, wakeable, lanes); - resetCurrentFiber(); + { + if (isDevToolsPresent) { + // If we have pending work still, restore the original updaters + restorePendingUpdaters(root, lanes); } } - function commitDoubleInvokeEffectsInDEV(root, hasPassiveEffects) { - { - if (useModernStrictMode && root.tag !== LegacyRoot) { - var doubleInvokeEffects = true; - - if ( - root.tag === ConcurrentRoot && - !(root.current.mode & (StrictLegacyMode | StrictEffectsMode)) - ) { - doubleInvokeEffects = false; - } + wakeable.then(ping, ping); + } +} - recursivelyTraverseAndDoubleInvokeEffectsInDEV( - root, - root.current, - doubleInvokeEffects - ); - } else { - legacyCommitDoubleInvokeEffectsInDEV(root.current, hasPassiveEffects); - } +function pingSuspendedRoot(root, wakeable, pingedLanes) { + var pingCache = root.pingCache; + + if (pingCache !== null) { + // The wakeable resolved, so we no longer need to memoize, because it will + // never be thrown again. + pingCache.delete(wakeable); + } + + markRootPinged(root, pingedLanes); + warnIfSuspenseResolutionNotWrappedWithActDEV(root); + + if (workInProgressRoot === root && isSubsetOfLanes(workInProgressRootRenderLanes, pingedLanes)) { + // Received a ping at the same priority level at which we're currently + // rendering. We might want to restart this render. This should mirror + // the logic of whether or not a root suspends once it completes. + // TODO: If we're rendering sync either due to Sync, Batched or expired, + // we should probably never restart. + // If we're suspended with delay, or if it's a retry, we'll always suspend + // so we can always restart. + if (workInProgressRootExitStatus === RootSuspendedWithDelay || workInProgressRootExitStatus === RootSuspended && includesOnlyRetries(workInProgressRootRenderLanes) && now$1() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) { + // Force a restart from the root by unwinding the stack. Unless this is + // being called from the render phase, because that would cause a crash. + if ((executionContext & RenderContext) === NoContext) { + prepareFreshStack(root, NoLanes); } + } else { + // Even though we can't restart right now, we might get an + // opportunity later. So we mark this render as having a ping. + workInProgressRootPingedLanes = mergeLanes(workInProgressRootPingedLanes, pingedLanes); } + } - function legacyCommitDoubleInvokeEffectsInDEV(fiber, hasPassiveEffects) { - // TODO (StrictEffects) Should we set a marker on the root if it contains strict effects - // so we don't traverse unnecessarily? similar to subtreeFlags but just at the root level. - // Maybe not a big deal since this is DEV only behavior. - setCurrentFiber(fiber); - invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectUnmountInDEV); - - if (hasPassiveEffects) { - invokeEffectsInDev( - fiber, - MountPassiveDev, - invokePassiveEffectUnmountInDEV - ); - } + ensureRootIsScheduled(root); +} - invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectMountInDEV); +function retryTimedOutBoundary(boundaryFiber, retryLane) { + // The boundary fiber (a Suspense component or SuspenseList component) + // previously was rendered in its fallback state. One of the promises that + // suspended it has resolved, which means at least part of the tree was + // likely unblocked. Try rendering again, at a new lanes. + if (retryLane === NoLane) { + // TODO: Assign this to `suspenseState.retryLane`? to avoid + // unnecessary entanglement? + retryLane = requestRetryLane(boundaryFiber); + } // TODO: Special case idle priority? - if (hasPassiveEffects) { - invokeEffectsInDev( - fiber, - MountPassiveDev, - invokePassiveEffectMountInDEV - ); - } - resetCurrentFiber(); - } + var root = enqueueConcurrentRenderForLane(boundaryFiber, retryLane); - function invokeEffectsInDev(firstChild, fiberFlags, invokeEffectFn) { - var current = firstChild; - var subtreeRoot = null; + if (root !== null) { + markRootUpdated(root, retryLane); + ensureRootIsScheduled(root); + } +} - while (current != null) { - var primarySubtreeFlag = current.subtreeFlags & fiberFlags; +function retryDehydratedSuspenseBoundary(boundaryFiber) { + var suspenseState = boundaryFiber.memoizedState; + var retryLane = NoLane; - if ( - current !== subtreeRoot && - current.child != null && - primarySubtreeFlag !== NoFlags$1 - ) { - current = current.child; - } else { - if ((current.flags & fiberFlags) !== NoFlags$1) { - invokeEffectFn(current); - } + if (suspenseState !== null) { + retryLane = suspenseState.retryLane; + } - if (current.sibling !== null) { - current = current.sibling; - } else { - current = subtreeRoot = current.return; - } - } - } - } + retryTimedOutBoundary(boundaryFiber, retryLane); +} +function resolveRetryWakeable(boundaryFiber, wakeable) { + var retryLane = NoLane; // Default - var didWarnStateUpdateForNotYetMountedComponent = null; - function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) { - { - if ((executionContext & RenderContext) !== NoContext) { - // We let the other warning about render phase updates deal with this one. - return; - } + var retryCache; - if (!(fiber.mode & ConcurrentMode)) { - return; - } + switch (boundaryFiber.tag) { + case SuspenseComponent: + retryCache = boundaryFiber.stateNode; + var suspenseState = boundaryFiber.memoizedState; - var tag = fiber.tag; + if (suspenseState !== null) { + retryLane = suspenseState.retryLane; + } - if ( - tag !== HostRoot && - tag !== ClassComponent && - tag !== FunctionComponent && - tag !== ForwardRef && - tag !== MemoComponent && - tag !== SimpleMemoComponent - ) { - // Only warn for user-defined components, not internal ones like Suspense. - return; - } // We show the whole stack but dedupe on the top component's name because - // the problematic code almost always lies inside that component. + break; - var componentName = - getComponentNameFromFiber(fiber) || "ReactComponent"; + case SuspenseListComponent: + retryCache = boundaryFiber.stateNode; + break; - if (didWarnStateUpdateForNotYetMountedComponent !== null) { - if (didWarnStateUpdateForNotYetMountedComponent.has(componentName)) { - return; - } // $FlowFixMe[incompatible-use] found when upgrading Flow + case OffscreenComponent: + { + var instance = boundaryFiber.stateNode; + retryCache = instance._retryCache; + break; + } - didWarnStateUpdateForNotYetMountedComponent.add(componentName); - } else { - didWarnStateUpdateForNotYetMountedComponent = new Set([ - componentName - ]); - } + default: + throw new Error('Pinged unknown suspense boundary type. ' + 'This is probably a bug in React.'); + } - var previousFiber = current; + if (retryCache !== null) { + // The wakeable resolved, so we no longer need to memoize, because it will + // never be thrown again. + retryCache.delete(wakeable); + } - try { - setCurrentFiber(fiber); + retryTimedOutBoundary(boundaryFiber, retryLane); +} +function throwIfInfiniteUpdateLoopDetected() { + if (nestedUpdateCount > NESTED_UPDATE_LIMIT) { + nestedUpdateCount = 0; + nestedPassiveUpdateCount = 0; + rootWithNestedUpdates = null; + rootWithPassiveNestedUpdates = null; - error( - "Can't perform a React state update on a component that hasn't mounted yet. " + - "This indicates that you have a side-effect in your render function that " + - "asynchronously later calls tries to update the component. Move this work to " + - "useEffect instead." - ); - } finally { - if (previousFiber) { - setCurrentFiber(fiber); - } else { - resetCurrentFiber(); - } - } + if (enableInfiniteRenderLoopDetection) { + if (executionContext & RenderContext && workInProgressRoot !== null) { + // We're in the render phase. Disable the concurrent error recovery + // mechanism to ensure that the error we're about to throw gets handled. + // We need it to trigger the nearest error boundary so that the infinite + // update loop is broken. + workInProgressRoot.errorRecoveryDisabledLanes = mergeLanes(workInProgressRoot.errorRecoveryDisabledLanes, workInProgressRootRenderLanes); } } - var didWarnAboutUpdateInRender = false; - var didWarnAboutUpdateInRenderForAnotherComponent; - { - didWarnAboutUpdateInRenderForAnotherComponent = new Set(); + throw new Error('Maximum update depth exceeded. This can happen when a component ' + 'repeatedly calls setState inside componentWillUpdate or ' + 'componentDidUpdate. React limits the number of nested updates to ' + 'prevent infinite loops.'); + } + + { + if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) { + nestedPassiveUpdateCount = 0; + rootWithPassiveNestedUpdates = null; + + error('Maximum update depth exceeded. This can happen when a component ' + "calls setState inside useEffect, but useEffect either doesn't " + 'have a dependency array, or one of the dependencies changes on ' + 'every render.'); } + } +} - function warnAboutRenderPhaseUpdatesInDEV(fiber) { - { - if (isRendering) { - switch (fiber.tag) { - case FunctionComponent: - case ForwardRef: - case SimpleMemoComponent: { - var renderingComponentName = - (workInProgress && getComponentNameFromFiber(workInProgress)) || - "Unknown"; // Dedupe by the rendering component because it's the one that needs to be fixed. - - var dedupeKey = renderingComponentName; - - if ( - !didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey) - ) { - didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey); - var setStateComponentName = - getComponentNameFromFiber(fiber) || "Unknown"; - - error( - "Cannot update a component (`%s`) while rendering a " + - "different component (`%s`). To locate the bad setState() call inside `%s`, " + - "follow the stack trace as described in https://react.dev/link/setstate-in-render", - setStateComponentName, - renderingComponentName, - renderingComponentName - ); - } +function flushRenderPhaseStrictModeWarningsInDEV() { + { + ReactStrictModeWarnings.flushLegacyContextWarning(); + ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings(); + } +} - break; - } +function recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, parentFiber, isInStrictMode) { + if ((parentFiber.subtreeFlags & (PlacementDEV | Visibility)) === NoFlags$1) { + // Parent's descendants have already had effects double invoked. + // Early exit to avoid unnecessary tree traversal. + return; + } - case ClassComponent: { - if (!didWarnAboutUpdateInRender) { - error( - "Cannot update during an existing state transition (such as " + - "within `render`). Render methods should be a pure " + - "function of props and state." - ); + var child = parentFiber.child; - didWarnAboutUpdateInRender = true; - } + while (child !== null) { + doubleInvokeEffectsInDEVIfNecessary(root, child, isInStrictMode); + child = child.sibling; + } +} // Unconditionally disconnects and connects passive and layout effects. - break; - } - } - } + +function doubleInvokeEffectsOnFiber(root, fiber) { + var shouldDoubleInvokePassiveEffects = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true; + disappearLayoutEffects(fiber); + + if (shouldDoubleInvokePassiveEffects) { + disconnectPassiveEffect(fiber); + } + + reappearLayoutEffects(root, fiber.alternate, fiber, false); + + if (shouldDoubleInvokePassiveEffects) { + reconnectPassiveEffects(root, fiber, NoLanes, null, false); + } +} + +function doubleInvokeEffectsInDEVIfNecessary(root, fiber, parentIsInStrictMode) { + var isStrictModeFiber = fiber.type === REACT_STRICT_MODE_TYPE; + var isInStrictMode = parentIsInStrictMode || isStrictModeFiber; // First case: the fiber **is not** of type OffscreenComponent. No + // special rules apply to double invoking effects. + + if (fiber.tag !== OffscreenComponent) { + if (fiber.flags & PlacementDEV) { + setCurrentFiber(fiber); + + if (isInStrictMode) { + doubleInvokeEffectsOnFiber(root, fiber, (fiber.mode & NoStrictPassiveEffectsMode) === NoMode); } + + resetCurrentFiber(); + } else { + recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, fiber, isInStrictMode); } - function restorePendingUpdaters(root, lanes) { - { - if (isDevToolsPresent) { - var memoizedUpdaters = root.memoizedUpdaters; - memoizedUpdaters.forEach(function (schedulingFiber) { - addFiberToLanesMap(root, schedulingFiber, lanes); - }); // This function intentionally does not clear memoized updaters. - // Those may still be relevant to the current commit - // and a future one (e.g. Suspense). - } - } + return; + } // Second case: the fiber **is** of type OffscreenComponent. + // This branch contains cases specific to Offscreen. + + + if (fiber.memoizedState === null) { + // Only consider Offscreen that is visible. + // TODO (Offscreen) Handle manual mode. + setCurrentFiber(fiber); + + if (isInStrictMode && fiber.flags & Visibility) { + // Double invoke effects on Offscreen's subtree only + // if it is visible and its visibility has changed. + doubleInvokeEffectsOnFiber(root, fiber); + } else if (fiber.subtreeFlags & PlacementDEV) { + // Something in the subtree could have been suspended. + // We need to continue traversal and find newly inserted fibers. + recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, fiber, isInStrictMode); } - var fakeActCallbackNode = {}; // $FlowFixMe[missing-local-annot] - function scheduleCallback(priorityLevel, callback) { - { - // If we're currently inside an `act` scope, bypass Scheduler and push to - // the `act` queue instead. - var actQueue = ReactSharedInternals.actQueue; + resetCurrentFiber(); + } +} - if (actQueue !== null) { - actQueue.push(callback); - return fakeActCallbackNode; - } else { - return scheduleCallback$3(priorityLevel, callback); - } +function commitDoubleInvokeEffectsInDEV(root, hasPassiveEffects) { + { + if (useModernStrictMode && (root.tag !== LegacyRoot)) { + var doubleInvokeEffects = true; + + if ((root.tag === ConcurrentRoot) && !(root.current.mode & (StrictLegacyMode | StrictEffectsMode))) { + doubleInvokeEffects = false; } - } - function shouldForceFlushFallbacksInDEV() { - // Never force flush in production. This function should get stripped out. - return ReactSharedInternals.actQueue !== null; + recursivelyTraverseAndDoubleInvokeEffectsInDEV(root, root.current, doubleInvokeEffects); + } else { + legacyCommitDoubleInvokeEffectsInDEV(root.current, hasPassiveEffects); } + } +} - function warnIfUpdatesNotWrappedWithActDEV(fiber) { - { - if (fiber.mode & ConcurrentMode) { - if (!isConcurrentActEnvironment()) { - // Not in an act environment. No need to warn. - return; - } - } else { - // Legacy mode has additional cases where we suppress a warning. - if (!isLegacyActEnvironment()) { - // Not in an act environment. No need to warn. - return; - } +function legacyCommitDoubleInvokeEffectsInDEV(fiber, hasPassiveEffects) { + // TODO (StrictEffects) Should we set a marker on the root if it contains strict effects + // so we don't traverse unnecessarily? similar to subtreeFlags but just at the root level. + // Maybe not a big deal since this is DEV only behavior. + setCurrentFiber(fiber); + invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectUnmountInDEV); - if (executionContext !== NoContext) { - // Legacy mode doesn't warn if the update is batched, i.e. - // batchedUpdates or flushSync. - return; - } + if (hasPassiveEffects) { + invokeEffectsInDev(fiber, MountPassiveDev, invokePassiveEffectUnmountInDEV); + } - if ( - fiber.tag !== FunctionComponent && - fiber.tag !== ForwardRef && - fiber.tag !== SimpleMemoComponent - ) { - // For backwards compatibility with pre-hooks code, legacy mode only - // warns for updates that originate from a hook. - return; - } - } + invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectMountInDEV); - if (ReactSharedInternals.actQueue === null) { - var previousFiber = current; + if (hasPassiveEffects) { + invokeEffectsInDev(fiber, MountPassiveDev, invokePassiveEffectMountInDEV); + } - try { - setCurrentFiber(fiber); - - error( - "An update to %s inside a test was not wrapped in act(...).\n\n" + - "When testing, code that causes React state updates should be " + - "wrapped into act(...):\n\n" + - "act(() => {\n" + - " /* fire events that update state */\n" + - "});\n" + - "/* assert on the output */\n\n" + - "This ensures that you're testing the behavior the user would see " + - "in the browser." + - " Learn more at https://react.dev/link/wrap-tests-with-act", - getComponentNameFromFiber(fiber) - ); - } finally { - if (previousFiber) { - setCurrentFiber(fiber); - } else { - resetCurrentFiber(); - } - } - } + resetCurrentFiber(); +} + +function invokeEffectsInDev(firstChild, fiberFlags, invokeEffectFn) { + var current = firstChild; + var subtreeRoot = null; + + while (current != null) { + var primarySubtreeFlag = current.subtreeFlags & fiberFlags; + + if (current !== subtreeRoot && current.child != null && primarySubtreeFlag !== NoFlags$1) { + current = current.child; + } else { + if ((current.flags & fiberFlags) !== NoFlags$1) { + invokeEffectFn(current); } - } - function warnIfSuspenseResolutionNotWrappedWithActDEV(root) { - { - if ( - root.tag !== LegacyRoot && - isConcurrentActEnvironment() && - ReactSharedInternals.actQueue === null - ) { - error( - "A suspended resource finished loading inside a test, but the event " + - "was not wrapped in act(...).\n\n" + - "When testing, code that resolves suspended data should be wrapped " + - "into act(...):\n\n" + - "act(() => {\n" + - " /* finish loading suspended data */\n" + - "});\n" + - "/* assert on the output */\n\n" + - "This ensures that you're testing the behavior the user would see " + - "in the browser." + - " Learn more at https://react.dev/link/wrap-tests-with-act" - ); - } - } - } - - function setIsRunningInsertionEffect(isRunning) { - { - isRunningInsertionEffect = isRunning; + if (current.sibling !== null) { + current = current.sibling; + } else { + current = subtreeRoot = current.return; } } + } +} - /* eslint-disable react-internal/prod-error-codes */ - // Used by React Refresh runtime through DevTools Global Hook. +var didWarnStateUpdateForNotYetMountedComponent = null; +function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) { + { + if ((executionContext & RenderContext) !== NoContext) { + // We let the other warning about render phase updates deal with this one. + return; + } - var resolveFamily = null; - var failedBoundaries = null; - var setRefreshHandler = function (handler) { - { - resolveFamily = handler; - } - }; - function resolveFunctionForHotReloading(type) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return type; - } + if (!(fiber.mode & ConcurrentMode)) { + return; + } - var family = resolveFamily(type); + var tag = fiber.tag; - if (family === undefined) { - return type; - } // Use the latest known implementation. + if (tag !== HostRoot && tag !== ClassComponent && tag !== FunctionComponent && tag !== ForwardRef && tag !== MemoComponent && tag !== SimpleMemoComponent) { + // Only warn for user-defined components, not internal ones like Suspense. + return; + } // We show the whole stack but dedupe on the top component's name because + // the problematic code almost always lies inside that component. - return family.current; - } - } - function resolveClassForHotReloading(type) { - // No implementation differences. - return resolveFunctionForHotReloading(type); - } - function resolveForwardRefForHotReloading(type) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return type; - } - - var family = resolveFamily(type); - - if (family === undefined) { - // Check if we're dealing with a real forwardRef. Don't want to crash early. - if ( - type !== null && - type !== undefined && - typeof type.render === "function" - ) { - // ForwardRef is special because its resolved .type is an object, - // but it's possible that we only have its inner render function in the map. - // If that inner render function is different, we'll build a new forwardRef type. - var currentRender = resolveFunctionForHotReloading(type.render); - - if (type.render !== currentRender) { - var syntheticType = { - $$typeof: REACT_FORWARD_REF_TYPE, - render: currentRender - }; - if (type.displayName !== undefined) { - syntheticType.displayName = type.displayName; - } + var componentName = getComponentNameFromFiber(fiber) || 'ReactComponent'; - return syntheticType; - } - } + if (didWarnStateUpdateForNotYetMountedComponent !== null) { + if (didWarnStateUpdateForNotYetMountedComponent.has(componentName)) { + return; + } // $FlowFixMe[incompatible-use] found when upgrading Flow - return type; - } // Use the latest known implementation. - return family.current; - } + didWarnStateUpdateForNotYetMountedComponent.add(componentName); + } else { + didWarnStateUpdateForNotYetMountedComponent = new Set([componentName]); } - function isCompatibleFamilyForHotReloading(fiber, element) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return false; - } - var prevType = fiber.elementType; - var nextType = element.type; // If we got here, we know types aren't === equal. + var previousFiber = current; - var needsCompareFamilies = false; - var $$typeofNextType = - typeof nextType === "object" && nextType !== null - ? nextType.$$typeof - : null; + try { + setCurrentFiber(fiber); - switch (fiber.tag) { - case ClassComponent: { - if (typeof nextType === "function") { - needsCompareFamilies = true; - } + error("Can't perform a React state update on a component that hasn't mounted yet. " + 'This indicates that you have a side-effect in your render function that ' + 'asynchronously later calls tries to update the component. Move this work to ' + 'useEffect instead.'); + } finally { + if (previousFiber) { + setCurrentFiber(fiber); + } else { + resetCurrentFiber(); + } + } + } +} +var didWarnAboutUpdateInRender = false; +var didWarnAboutUpdateInRenderForAnotherComponent; - break; - } +{ + didWarnAboutUpdateInRenderForAnotherComponent = new Set(); +} - case FunctionComponent: { - if (typeof nextType === "function") { - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - // We don't know the inner type yet. - // We're going to assume that the lazy inner type is stable, - // and so it is sufficient to avoid reconciling it away. - // We're not going to unwrap or actually use the new lazy type. - needsCompareFamilies = true; - } +function warnAboutRenderPhaseUpdatesInDEV(fiber) { + { + if (isRendering) { + switch (fiber.tag) { + case FunctionComponent: + case ForwardRef: + case SimpleMemoComponent: + { + var renderingComponentName = workInProgress && getComponentNameFromFiber(workInProgress) || 'Unknown'; // Dedupe by the rendering component because it's the one that needs to be fixed. - break; - } + var dedupeKey = renderingComponentName; + + if (!didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey)) { + didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey); + var setStateComponentName = getComponentNameFromFiber(fiber) || 'Unknown'; - case ForwardRef: { - if ($$typeofNextType === REACT_FORWARD_REF_TYPE) { - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - needsCompareFamilies = true; + error('Cannot update a component (`%s`) while rendering a ' + 'different component (`%s`). To locate the bad setState() call inside `%s`, ' + 'follow the stack trace as described in https://react.dev/link/setstate-in-render', setStateComponentName, renderingComponentName, renderingComponentName); } break; } - case MemoComponent: - case SimpleMemoComponent: { - if ($$typeofNextType === REACT_MEMO_TYPE) { - // TODO: if it was but can no longer be simple, - // we shouldn't set this. - needsCompareFamilies = true; - } else if ($$typeofNextType === REACT_LAZY_TYPE) { - needsCompareFamilies = true; + case ClassComponent: + { + if (!didWarnAboutUpdateInRender) { + error('Cannot update during an existing state transition (such as ' + 'within `render`). Render methods should be a pure ' + 'function of props and state.'); + + didWarnAboutUpdateInRender = true; } break; } - - default: - return false; - } // Check if both types have a family and it's the same one. - - if (needsCompareFamilies) { - // Note: memo() and forwardRef() we'll compare outer rather than inner type. - // This means both of them need to be registered to preserve state. - // If we unwrapped and compared the inner types for wrappers instead, - // then we would risk falsely saying two separate memo(Foo) - // calls are equivalent because they wrap the same Foo function. - var prevFamily = resolveFamily(prevType); // $FlowFixMe[not-a-function] found when upgrading Flow - - if ( - prevFamily !== undefined && - prevFamily === resolveFamily(nextType) - ) { - return true; - } - } - - return false; } } - function markFailedErrorBoundaryForHotReloading(fiber) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return; - } + } +} - if (typeof WeakSet !== "function") { - return; - } +function restorePendingUpdaters(root, lanes) { + { + if (isDevToolsPresent) { + var memoizedUpdaters = root.memoizedUpdaters; + memoizedUpdaters.forEach(function (schedulingFiber) { + addFiberToLanesMap(root, schedulingFiber, lanes); + }); // This function intentionally does not clear memoized updaters. + // Those may still be relevant to the current commit + // and a future one (e.g. Suspense). + } + } +} +var fakeActCallbackNode = {}; // $FlowFixMe[missing-local-annot] - if (failedBoundaries === null) { - failedBoundaries = new WeakSet(); - } +function scheduleCallback(priorityLevel, callback) { + { + // If we're currently inside an `act` scope, bypass Scheduler and push to + // the `act` queue instead. + var actQueue = ReactSharedInternals.actQueue; - failedBoundaries.add(fiber); - } + if (actQueue !== null) { + actQueue.push(callback); + return fakeActCallbackNode; + } else { + return scheduleCallback$3(priorityLevel, callback); } - var scheduleRefresh = function (root, update) { - { - if (resolveFamily === null) { - // Hot reloading is disabled. - return; - } + } +} - var staleFamilies = update.staleFamilies, - updatedFamilies = update.updatedFamilies; - flushPassiveEffects(); - scheduleFibersWithFamiliesRecursively( - root.current, - updatedFamilies, - staleFamilies - ); - flushSyncWork(); - } - }; - var scheduleRoot = function (root, element) { - { - if (root.context !== emptyContextObject) { - // Super edge case: root has a legacy _renderSubtree context - // but we don't know the parentComponent so we can't pass it. - // Just ignore. We'll delete this with _renderSubtree code path later. - return; - } +function shouldForceFlushFallbacksInDEV() { + // Never force flush in production. This function should get stripped out. + return ReactSharedInternals.actQueue !== null; +} - updateContainerSync(element, root, null, null); - flushSyncWork(); +function warnIfUpdatesNotWrappedWithActDEV(fiber) { + { + if (fiber.mode & ConcurrentMode) { + if (!isConcurrentActEnvironment()) { + // Not in an act environment. No need to warn. + return; + } + } else { + // Legacy mode has additional cases where we suppress a warning. + if (!isLegacyActEnvironment()) { + // Not in an act environment. No need to warn. + return; } - }; - - function scheduleFibersWithFamiliesRecursively( - fiber, - updatedFamilies, - staleFamilies - ) { - { - var alternate = fiber.alternate, - child = fiber.child, - sibling = fiber.sibling, - tag = fiber.tag, - type = fiber.type; - var candidateType = null; - - switch (tag) { - case FunctionComponent: - case SimpleMemoComponent: - case ClassComponent: - candidateType = type; - break; - - case ForwardRef: - candidateType = type.render; - break; - } - - if (resolveFamily === null) { - throw new Error( - "Expected resolveFamily to be set during hot reload." - ); - } - var needsRender = false; - var needsRemount = false; + if (executionContext !== NoContext) { + // Legacy mode doesn't warn if the update is batched, i.e. + // batchedUpdates or flushSync. + return; + } - if (candidateType !== null) { - var family = resolveFamily(candidateType); + if (fiber.tag !== FunctionComponent && fiber.tag !== ForwardRef && fiber.tag !== SimpleMemoComponent) { + // For backwards compatibility with pre-hooks code, legacy mode only + // warns for updates that originate from a hook. + return; + } + } - if (family !== undefined) { - if (staleFamilies.has(family)) { - needsRemount = true; - } else if (updatedFamilies.has(family)) { - if (tag === ClassComponent) { - needsRemount = true; - } else { - needsRender = true; - } - } - } - } + if (ReactSharedInternals.actQueue === null) { + var previousFiber = current; - if (failedBoundaries !== null) { - if ( - failedBoundaries.has(fiber) || // $FlowFixMe[incompatible-use] found when upgrading Flow - (alternate !== null && failedBoundaries.has(alternate)) - ) { - needsRemount = true; - } - } + try { + setCurrentFiber(fiber); - if (needsRemount) { - fiber._debugNeedsRemount = true; + error('An update to %s inside a test was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be ' + 'wrapped into act(...):\n\n' + 'act(() => {\n' + ' /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://react.dev/link/wrap-tests-with-act', getComponentNameFromFiber(fiber)); + } finally { + if (previousFiber) { + setCurrentFiber(fiber); + } else { + resetCurrentFiber(); } + } + } + } +} - if (needsRemount || needsRender) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); +function warnIfSuspenseResolutionNotWrappedWithActDEV(root) { + { + if ((root.tag !== LegacyRoot) && isConcurrentActEnvironment() && ReactSharedInternals.actQueue === null) { + error('A suspended resource finished loading inside a test, but the event ' + 'was not wrapped in act(...).\n\n' + 'When testing, code that resolves suspended data should be wrapped ' + 'into act(...):\n\n' + 'act(() => {\n' + ' /* finish loading suspended data */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://react.dev/link/wrap-tests-with-act'); + } + } +} - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } +function setIsRunningInsertionEffect(isRunning) { + { + isRunningInsertionEffect = isRunning; + } +} - if (child !== null && !needsRemount) { - scheduleFibersWithFamiliesRecursively( - child, - updatedFamilies, - staleFamilies - ); - } +/* eslint-disable react-internal/prod-error-codes */ +// Used by React Refresh runtime through DevTools Global Hook. - if (sibling !== null) { - scheduleFibersWithFamiliesRecursively( - sibling, - updatedFamilies, - staleFamilies - ); - } - } +var resolveFamily = null; +var failedBoundaries = null; +var setRefreshHandler = function (handler) { + { + resolveFamily = handler; + } +}; +function resolveFunctionForHotReloading(type) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return type; } - var findHostInstancesForRefresh = function (root, families) { - { - var hostInstances = new Set(); - var types = new Set( - families.map(function (family) { - return family.current; - }) - ); - findHostInstancesForMatchingFibersRecursively( - root.current, - types, - hostInstances - ); - return hostInstances; - } - }; - - function findHostInstancesForMatchingFibersRecursively( - fiber, - types, - hostInstances - ) { - { - var child = fiber.child, - sibling = fiber.sibling, - tag = fiber.tag, - type = fiber.type; - var candidateType = null; - - switch (tag) { - case FunctionComponent: - case SimpleMemoComponent: - case ClassComponent: - candidateType = type; - break; + var family = resolveFamily(type); - case ForwardRef: - candidateType = type.render; - break; - } + if (family === undefined) { + return type; + } // Use the latest known implementation. - var didMatch = false; - if (candidateType !== null) { - if (types.has(candidateType)) { - didMatch = true; - } - } + return family.current; + } +} +function resolveClassForHotReloading(type) { + // No implementation differences. + return resolveFunctionForHotReloading(type); +} +function resolveForwardRefForHotReloading(type) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return type; + } + + var family = resolveFamily(type); + + if (family === undefined) { + // Check if we're dealing with a real forwardRef. Don't want to crash early. + if (type !== null && type !== undefined && typeof type.render === 'function') { + // ForwardRef is special because its resolved .type is an object, + // but it's possible that we only have its inner render function in the map. + // If that inner render function is different, we'll build a new forwardRef type. + var currentRender = resolveFunctionForHotReloading(type.render); + + if (type.render !== currentRender) { + var syntheticType = { + $$typeof: REACT_FORWARD_REF_TYPE, + render: currentRender + }; - if (didMatch) { - // We have a match. This only drills down to the closest host components. - // There's no need to search deeper because for the purpose of giving - // visual feedback, "flashing" outermost parent rectangles is sufficient. - findHostInstancesForFiberShallowly(fiber, hostInstances); - } else { - // If there's no match, maybe there will be one further down in the child tree. - if (child !== null) { - findHostInstancesForMatchingFibersRecursively( - child, - types, - hostInstances - ); + if (type.displayName !== undefined) { + syntheticType.displayName = type.displayName; } - } - if (sibling !== null) { - findHostInstancesForMatchingFibersRecursively( - sibling, - types, - hostInstances - ); + return syntheticType; } } - } - - function findHostInstancesForFiberShallowly(fiber, hostInstances) { - { - var foundHostInstances = findChildHostInstancesForFiberShallowly( - fiber, - hostInstances - ); - if (foundHostInstances) { - return; - } // If we didn't find any host children, fallback to closest host parent. + return type; + } // Use the latest known implementation. - var node = fiber; - while (true) { - switch (node.tag) { - case HostSingleton: - case HostComponent: - hostInstances.add(node.stateNode); - return; + return family.current; + } +} +function isCompatibleFamilyForHotReloading(fiber, element) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return false; + } - case HostPortal: - hostInstances.add(node.stateNode.containerInfo); - return; + var prevType = fiber.elementType; + var nextType = element.type; // If we got here, we know types aren't === equal. - case HostRoot: - hostInstances.add(node.stateNode.containerInfo); - return; - } + var needsCompareFamilies = false; + var $$typeofNextType = typeof nextType === 'object' && nextType !== null ? nextType.$$typeof : null; - if (node.return === null) { - throw new Error("Expected to reach root first."); + switch (fiber.tag) { + case ClassComponent: + { + if (typeof nextType === 'function') { + needsCompareFamilies = true; } - node = node.return; + break; } - } - } - function findChildHostInstancesForFiberShallowly(fiber, hostInstances) { - { - var node = fiber; - var foundHostInstances = false; - - while (true) { - if ( - node.tag === HostComponent || - node.tag === HostHoistable || - false - ) { - // We got a match. - foundHostInstances = true; - hostInstances.add(node.stateNode); // There may still be more, so keep searching. - } else if (node.child !== null) { - node.child.return = node; - node = node.child; - continue; + case FunctionComponent: + { + if (typeof nextType === 'function') { + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + // We don't know the inner type yet. + // We're going to assume that the lazy inner type is stable, + // and so it is sufficient to avoid reconciling it away. + // We're not going to unwrap or actually use the new lazy type. + needsCompareFamilies = true; } - if (node === fiber) { - return foundHostInstances; + break; + } + + case ForwardRef: + { + if ($$typeofNextType === REACT_FORWARD_REF_TYPE) { + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + needsCompareFamilies = true; } - while (node.sibling === null) { - if (node.return === null || node.return === fiber) { - return foundHostInstances; - } + break; + } - node = node.return; + case MemoComponent: + case SimpleMemoComponent: + { + if ($$typeofNextType === REACT_MEMO_TYPE) { + // TODO: if it was but can no longer be simple, + // we shouldn't set this. + needsCompareFamilies = true; + } else if ($$typeofNextType === REACT_LAZY_TYPE) { + needsCompareFamilies = true; } - node.sibling.return = node.return; - node = node.sibling; + break; } - } - - return false; - } - var hasBadMapPolyfill; + default: + return false; + } // Check if both types have a family and it's the same one. - { - hasBadMapPolyfill = false; - try { - var nonExtensibleObject = Object.preventExtensions({}); - /* eslint-disable no-new */ - - new Map([[nonExtensibleObject, null]]); - new Set([nonExtensibleObject]); - /* eslint-enable no-new */ - } catch (e) { - // TODO: Consider warning about bad polyfills - hasBadMapPolyfill = true; - } - } - - function FiberNode(tag, pendingProps, key, mode) { - // Instance - this.tag = tag; - this.key = key; - this.elementType = null; - this.type = null; - this.stateNode = null; // Fiber - - this.return = null; - this.child = null; - this.sibling = null; - this.index = 0; - this.ref = null; - this.refCleanup = null; - this.pendingProps = pendingProps; - this.memoizedProps = null; - this.updateQueue = null; - this.memoizedState = null; - this.dependencies = null; - this.mode = mode; // Effects - - this.flags = NoFlags$1; - this.subtreeFlags = NoFlags$1; - this.deletions = null; - this.lanes = NoLanes; - this.childLanes = NoLanes; - this.alternate = null; + if (needsCompareFamilies) { + // Note: memo() and forwardRef() we'll compare outer rather than inner type. + // This means both of them need to be registered to preserve state. + // If we unwrapped and compared the inner types for wrappers instead, + // then we would risk falsely saying two separate memo(Foo) + // calls are equivalent because they wrap the same Foo function. + var prevFamily = resolveFamily(prevType); // $FlowFixMe[not-a-function] found when upgrading Flow - { - // Note: The following is done to avoid a v8 performance cliff. - // - // Initializing the fields below to smis and later updating them with - // double values will cause Fibers to end up having separate shapes. - // This behavior/bug has something to do with Object.preventExtension(). - // Fortunately this only impacts DEV builds. - // Unfortunately it makes React unusably slow for some applications. - // To work around this, initialize the fields below with doubles. - // - // Learn more about this here: - // https://github.com/facebook/react/issues/14365 - // https://bugs.chromium.org/p/v8/issues/detail?id=8538 - this.actualDuration = Number.NaN; - this.actualStartTime = Number.NaN; - this.selfBaseDuration = Number.NaN; - this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization. - // This won't trigger the performance cliff mentioned above, - // and it simplifies other profiler code (including DevTools). - - this.actualDuration = 0; - this.actualStartTime = -1; - this.selfBaseDuration = 0; - this.treeBaseDuration = 0; + if (prevFamily !== undefined && prevFamily === resolveFamily(nextType)) { + return true; } + } - { - // This isn't directly used but is handy for debugging internals: - this._debugInfo = null; - this._debugOwner = null; - this._debugNeedsRemount = false; - this._debugHookTypes = null; - - if ( - !hasBadMapPolyfill && - typeof Object.preventExtensions === "function" - ) { - Object.preventExtensions(this); - } - } - } // This is a constructor function, rather than a POJO constructor, still - // please ensure we do the following: - // 1) Nobody should add any instance methods on this. Instance methods can be - // more difficult to predict when they get optimized and they are almost - // never inlined properly in static compilers. - // 2) Nobody should rely on `instanceof Fiber` for type testing. We should - // always know when it is a fiber. - // 3) We might want to experiment with using numeric keys since they are easier - // to optimize in a non-JIT environment. - // 4) We can easily go from a constructor to a createFiber object literal if that - // is faster. - // 5) It should be easy to port this to a C struct and keep a C implementation - // compatible. - - function createFiber(tag, pendingProps, key, mode) { - // $FlowFixMe[invalid-constructor]: the shapes are exact here but Flow doesn't like constructors - return new FiberNode(tag, pendingProps, key, mode); - } - - function shouldConstruct(Component) { - var prototype = Component.prototype; - return !!(prototype && prototype.isReactComponent); - } - - function isSimpleFunctionComponent(type) { - return ( - typeof type === "function" && - !shouldConstruct(type) && - type.defaultProps === undefined - ); - } - function isFunctionClassComponent(type) { - return shouldConstruct(type); - } // This is used to create an alternate fiber to do work on. - - function createWorkInProgress(current, pendingProps) { - var workInProgress = current.alternate; - - if (workInProgress === null) { - // We use a double buffering pooling technique because we know that we'll - // only ever need at most two versions of a tree. We pool the "other" unused - // node that we're free to reuse. This is lazily created to avoid allocating - // extra objects for things that are never updated. It also allow us to - // reclaim the extra memory if needed. - workInProgress = createFiber( - current.tag, - pendingProps, - current.key, - current.mode - ); - workInProgress.elementType = current.elementType; - workInProgress.type = current.type; - workInProgress.stateNode = current.stateNode; - - { - // DEV-only fields - workInProgress._debugOwner = current._debugOwner; - workInProgress._debugHookTypes = current._debugHookTypes; - } - - workInProgress.alternate = current; - current.alternate = workInProgress; - } else { - workInProgress.pendingProps = pendingProps; // Needed because Blocks store data on type. + return false; + } +} +function markFailedErrorBoundaryForHotReloading(fiber) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return; + } - workInProgress.type = current.type; // We already have an alternate. - // Reset the effect tag. + if (typeof WeakSet !== 'function') { + return; + } - workInProgress.flags = NoFlags$1; // The effects are no longer valid. + if (failedBoundaries === null) { + failedBoundaries = new WeakSet(); + } - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.deletions = null; + failedBoundaries.add(fiber); + } +} +var scheduleRefresh = function (root, update) { + { + if (resolveFamily === null) { + // Hot reloading is disabled. + return; + } + + var staleFamilies = update.staleFamilies, + updatedFamilies = update.updatedFamilies; + flushPassiveEffects(); + scheduleFibersWithFamiliesRecursively(root.current, updatedFamilies, staleFamilies); + flushSyncWork(); + } +}; +var scheduleRoot = function (root, element) { + { + if (root.context !== emptyContextObject) { + // Super edge case: root has a legacy _renderSubtree context + // but we don't know the parentComponent so we can't pass it. + // Just ignore. We'll delete this with _renderSubtree code path later. + return; + } + + updateContainerSync(element, root, null, null); + flushSyncWork(); + } +}; + +function scheduleFibersWithFamiliesRecursively(fiber, updatedFamilies, staleFamilies) { + { + var alternate = fiber.alternate, + child = fiber.child, + sibling = fiber.sibling, + tag = fiber.tag, + type = fiber.type; + var candidateType = null; - { - // We intentionally reset, rather than copy, actualDuration & actualStartTime. - // This prevents time from endlessly accumulating in new commits. - // This has the downside of resetting values for different priority renders, - // But works for yielding (the common case) and should support resuming. - workInProgress.actualDuration = 0; - workInProgress.actualStartTime = -1; - } - } // Reset all effects except static ones. - // Static effects are not specific to a render. - - workInProgress.flags = current.flags & StaticMask; - workInProgress.childLanes = current.childLanes; - workInProgress.lanes = current.lanes; - workInProgress.child = current.child; - workInProgress.memoizedProps = current.memoizedProps; - workInProgress.memoizedState = current.memoizedState; - workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so - // it cannot be shared with the current fiber. - - var currentDependencies = current.dependencies; - workInProgress.dependencies = - currentDependencies === null - ? null - : { - lanes: currentDependencies.lanes, - firstContext: currentDependencies.firstContext - }; // These will be overridden during the parent's reconciliation - - workInProgress.sibling = current.sibling; - workInProgress.index = current.index; - workInProgress.ref = current.ref; - workInProgress.refCleanup = current.refCleanup; + switch (tag) { + case FunctionComponent: + case SimpleMemoComponent: + case ClassComponent: + candidateType = type; + break; - { - workInProgress.selfBaseDuration = current.selfBaseDuration; - workInProgress.treeBaseDuration = current.treeBaseDuration; - } + case ForwardRef: + candidateType = type.render; + break; + } - { - workInProgress._debugInfo = current._debugInfo; - workInProgress._debugNeedsRemount = current._debugNeedsRemount; + if (resolveFamily === null) { + throw new Error('Expected resolveFamily to be set during hot reload.'); + } - switch (workInProgress.tag) { - case FunctionComponent: - case SimpleMemoComponent: - workInProgress.type = resolveFunctionForHotReloading(current.type); - break; + var needsRender = false; + var needsRemount = false; - case ClassComponent: - workInProgress.type = resolveClassForHotReloading(current.type); - break; + if (candidateType !== null) { + var family = resolveFamily(candidateType); - case ForwardRef: - workInProgress.type = resolveForwardRefForHotReloading( - current.type - ); - break; + if (family !== undefined) { + if (staleFamilies.has(family)) { + needsRemount = true; + } else if (updatedFamilies.has(family)) { + if (tag === ClassComponent) { + needsRemount = true; + } else { + needsRender = true; + } } } + } - return workInProgress; - } // Used to reuse a Fiber for a second pass. + if (failedBoundaries !== null) { + if (failedBoundaries.has(fiber) || // $FlowFixMe[incompatible-use] found when upgrading Flow + alternate !== null && failedBoundaries.has(alternate)) { + needsRemount = true; + } + } - function resetWorkInProgress(workInProgress, renderLanes) { - // This resets the Fiber to what createFiber or createWorkInProgress would - // have set the values to before during the first pass. Ideally this wouldn't - // be necessary but unfortunately many code paths reads from the workInProgress - // when they should be reading from current and writing to workInProgress. - // We assume pendingProps, index, key, ref, return are still untouched to - // avoid doing another reconciliation. - // Reset the effect flags but keep any Placement tags, since that's something - // that child fiber is setting, not the reconciliation. - workInProgress.flags &= StaticMask | Placement; // The effects are no longer valid. + if (needsRemount) { + fiber._debugNeedsRemount = true; + } - var current = workInProgress.alternate; + if (needsRemount || needsRender) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (current === null) { - // Reset to createFiber's initial values. - workInProgress.childLanes = NoLanes; - workInProgress.lanes = renderLanes; - workInProgress.child = null; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.memoizedProps = null; - workInProgress.memoizedState = null; - workInProgress.updateQueue = null; - workInProgress.dependencies = null; - workInProgress.stateNode = null; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } - { - // Note: We don't reset the actualTime counts. It's useful to accumulate - // actual time across multiple render passes. - workInProgress.selfBaseDuration = 0; - workInProgress.treeBaseDuration = 0; - } - } else { - // Reset to the cloned values that createWorkInProgress would've. - workInProgress.childLanes = current.childLanes; - workInProgress.lanes = current.lanes; - workInProgress.child = current.child; - workInProgress.subtreeFlags = NoFlags$1; - workInProgress.deletions = null; - workInProgress.memoizedProps = current.memoizedProps; - workInProgress.memoizedState = current.memoizedState; - workInProgress.updateQueue = current.updateQueue; // Needed because Blocks store data on type. - - workInProgress.type = current.type; // Clone the dependencies object. This is mutated during the render phase, so - // it cannot be shared with the current fiber. - - var currentDependencies = current.dependencies; - workInProgress.dependencies = - currentDependencies === null - ? null - : { - lanes: currentDependencies.lanes, - firstContext: currentDependencies.firstContext - }; + if (child !== null && !needsRemount) { + scheduleFibersWithFamiliesRecursively(child, updatedFamilies, staleFamilies); + } - { - // Note: We don't reset the actualTime counts. It's useful to accumulate - // actual time across multiple render passes. - workInProgress.selfBaseDuration = current.selfBaseDuration; - workInProgress.treeBaseDuration = current.treeBaseDuration; - } - } + if (sibling !== null) { + scheduleFibersWithFamiliesRecursively(sibling, updatedFamilies, staleFamilies); + } + } +} + +var findHostInstancesForRefresh = function (root, families) { + { + var hostInstances = new Set(); + var types = new Set(families.map(function (family) { + return family.current; + })); + findHostInstancesForMatchingFibersRecursively(root.current, types, hostInstances); + return hostInstances; + } +}; + +function findHostInstancesForMatchingFibersRecursively(fiber, types, hostInstances) { + { + var child = fiber.child, + sibling = fiber.sibling, + tag = fiber.tag, + type = fiber.type; + var candidateType = null; + + switch (tag) { + case FunctionComponent: + case SimpleMemoComponent: + case ClassComponent: + candidateType = type; + break; - return workInProgress; + case ForwardRef: + candidateType = type.render; + break; } - function createHostRootFiber( - tag, - isStrictMode, - concurrentUpdatesByDefaultOverride - ) { - var mode; - if (tag === ConcurrentRoot) { - mode = ConcurrentMode; + var didMatch = false; - if (isStrictMode === true) { - mode |= StrictLegacyMode | StrictEffectsMode; - } - } else { - mode = NoMode; + if (candidateType !== null) { + if (types.has(candidateType)) { + didMatch = true; } + } - if (isDevToolsPresent) { - // Always collect profile timings when DevTools are present. - // This enables DevTools to start capturing timing at any point– - // Without some nodes in the tree having empty base times. - mode |= ProfileMode; + if (didMatch) { + // We have a match. This only drills down to the closest host components. + // There's no need to search deeper because for the purpose of giving + // visual feedback, "flashing" outermost parent rectangles is sufficient. + findHostInstancesForFiberShallowly(fiber, hostInstances); + } else { + // If there's no match, maybe there will be one further down in the child tree. + if (child !== null) { + findHostInstancesForMatchingFibersRecursively(child, types, hostInstances); } + } - return createFiber(HostRoot, null, null, mode); + if (sibling !== null) { + findHostInstancesForMatchingFibersRecursively(sibling, types, hostInstances); } - function createFiberFromTypeAndProps( - type, // React$ElementType - key, - pendingProps, - owner, - mode, - lanes - ) { - var fiberTag = FunctionComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy. + } +} - var resolvedType = type; +function findHostInstancesForFiberShallowly(fiber, hostInstances) { + { + var foundHostInstances = findChildHostInstancesForFiberShallowly(fiber, hostInstances); - if (typeof type === "function") { - if (shouldConstruct(type)) { - fiberTag = ClassComponent; + if (foundHostInstances) { + return; + } // If we didn't find any host children, fallback to closest host parent. - { - resolvedType = resolveClassForHotReloading(resolvedType); - } - } else { - { - resolvedType = resolveFunctionForHotReloading(resolvedType); - } - } - } else if (typeof type === "string") { - { - fiberTag = HostComponent; - } - } else { - getTag: switch (type) { - case REACT_FRAGMENT_TYPE: - return createFiberFromFragment( - pendingProps.children, - mode, - lanes, - key - ); - case REACT_STRICT_MODE_TYPE: - fiberTag = Mode; - mode |= StrictLegacyMode; + var node = fiber; - if ((mode & ConcurrentMode) !== NoMode) { - // Strict effects should never run on legacy roots - mode |= StrictEffectsMode; - } + while (true) { + switch (node.tag) { + case HostSingleton: + case HostComponent: + hostInstances.add(node.stateNode); + return; - break; + case HostPortal: + hostInstances.add(node.stateNode.containerInfo); + return; - case REACT_PROFILER_TYPE: - return createFiberFromProfiler(pendingProps, mode, lanes, key); + case HostRoot: + hostInstances.add(node.stateNode.containerInfo); + return; + } + + if (node.return === null) { + throw new Error('Expected to reach root first.'); + } - case REACT_SUSPENSE_TYPE: - return createFiberFromSuspense(pendingProps, mode, lanes, key); + node = node.return; + } + } +} - case REACT_SUSPENSE_LIST_TYPE: - return createFiberFromSuspenseList(pendingProps, mode, lanes, key); +function findChildHostInstancesForFiberShallowly(fiber, hostInstances) { + { + var node = fiber; + var foundHostInstances = false; - case REACT_OFFSCREEN_TYPE: - return createFiberFromOffscreen(pendingProps, mode, lanes, key); + while (true) { + if (node.tag === HostComponent || node.tag === HostHoistable || (false)) { + // We got a match. + foundHostInstances = true; + hostInstances.add(node.stateNode); // There may still be more, so keep searching. + } else if (node.child !== null) { + node.child.return = node; + node = node.child; + continue; + } - case REACT_LEGACY_HIDDEN_TYPE: + if (node === fiber) { + return foundHostInstances; + } - // Fall through + while (node.sibling === null) { + if (node.return === null || node.return === fiber) { + return foundHostInstances; + } - case REACT_SCOPE_TYPE: + node = node.return; + } - // Fall through + node.sibling.return = node.return; + node = node.sibling; + } + } - case REACT_TRACING_MARKER_TYPE: + return false; +} - // Fall through +var hasBadMapPolyfill; - case REACT_DEBUG_TRACING_MODE_TYPE: +{ + hasBadMapPolyfill = false; - // Fall through + try { + var nonExtensibleObject = Object.preventExtensions({}); + /* eslint-disable no-new */ - default: { - if (typeof type === "object" && type !== null) { - switch (type.$$typeof) { - case REACT_PROVIDER_TYPE: - if (!enableRenderableContext) { - fiberTag = ContextProvider; - break getTag; - } + new Map([[nonExtensibleObject, null]]); + new Set([nonExtensibleObject]); + /* eslint-enable no-new */ + } catch (e) { + // TODO: Consider warning about bad polyfills + hasBadMapPolyfill = true; + } +} - // Fall through +function FiberNode(tag, pendingProps, key, mode) { + // Instance + this.tag = tag; + this.key = key; + this.elementType = null; + this.type = null; + this.stateNode = null; // Fiber + + this.return = null; + this.child = null; + this.sibling = null; + this.index = 0; + this.ref = null; + this.refCleanup = null; + this.pendingProps = pendingProps; + this.memoizedProps = null; + this.updateQueue = null; + this.memoizedState = null; + this.dependencies = null; + this.mode = mode; // Effects + + this.flags = NoFlags$1; + this.subtreeFlags = NoFlags$1; + this.deletions = null; + this.lanes = NoLanes; + this.childLanes = NoLanes; + this.alternate = null; + + { + // Note: The following is done to avoid a v8 performance cliff. + // + // Initializing the fields below to smis and later updating them with + // double values will cause Fibers to end up having separate shapes. + // This behavior/bug has something to do with Object.preventExtension(). + // Fortunately this only impacts DEV builds. + // Unfortunately it makes React unusably slow for some applications. + // To work around this, initialize the fields below with doubles. + // + // Learn more about this here: + // https://github.com/facebook/react/issues/14365 + // https://bugs.chromium.org/p/v8/issues/detail?id=8538 + this.actualDuration = Number.NaN; + this.actualStartTime = Number.NaN; + this.selfBaseDuration = Number.NaN; + this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization. + // This won't trigger the performance cliff mentioned above, + // and it simplifies other profiler code (including DevTools). + + this.actualDuration = 0; + this.actualStartTime = -1; + this.selfBaseDuration = 0; + this.treeBaseDuration = 0; + } + + { + // This isn't directly used but is handy for debugging internals: + this._debugInfo = null; + this._debugOwner = null; + this._debugNeedsRemount = false; + this._debugHookTypes = null; + + if (!hasBadMapPolyfill && typeof Object.preventExtensions === 'function') { + Object.preventExtensions(this); + } + } +} // This is a constructor function, rather than a POJO constructor, still +// please ensure we do the following: +// 1) Nobody should add any instance methods on this. Instance methods can be +// more difficult to predict when they get optimized and they are almost +// never inlined properly in static compilers. +// 2) Nobody should rely on `instanceof Fiber` for type testing. We should +// always know when it is a fiber. +// 3) We might want to experiment with using numeric keys since they are easier +// to optimize in a non-JIT environment. +// 4) We can easily go from a constructor to a createFiber object literal if that +// is faster. +// 5) It should be easy to port this to a C struct and keep a C implementation +// compatible. + + +function createFiber(tag, pendingProps, key, mode) { + // $FlowFixMe[invalid-constructor]: the shapes are exact here but Flow doesn't like constructors + return new FiberNode(tag, pendingProps, key, mode); +} - case REACT_CONTEXT_TYPE: - if (enableRenderableContext) { - fiberTag = ContextProvider; - break getTag; - } else { - fiberTag = ContextConsumer; - break getTag; - } +function shouldConstruct(Component) { + var prototype = Component.prototype; + return !!(prototype && prototype.isReactComponent); +} - case REACT_CONSUMER_TYPE: - if (enableRenderableContext) { - fiberTag = ContextConsumer; - break getTag; - } +function isSimpleFunctionComponent(type) { + return typeof type === 'function' && !shouldConstruct(type) && type.defaultProps === undefined; +} +function isFunctionClassComponent(type) { + return shouldConstruct(type); +} // This is used to create an alternate fiber to do work on. + +function createWorkInProgress(current, pendingProps) { + var workInProgress = current.alternate; + + if (workInProgress === null) { + // We use a double buffering pooling technique because we know that we'll + // only ever need at most two versions of a tree. We pool the "other" unused + // node that we're free to reuse. This is lazily created to avoid allocating + // extra objects for things that are never updated. It also allow us to + // reclaim the extra memory if needed. + workInProgress = createFiber(current.tag, pendingProps, current.key, current.mode); + workInProgress.elementType = current.elementType; + workInProgress.type = current.type; + workInProgress.stateNode = current.stateNode; - // Fall through + { + // DEV-only fields + workInProgress._debugOwner = current._debugOwner; + workInProgress._debugHookTypes = current._debugHookTypes; + } - case REACT_FORWARD_REF_TYPE: - fiberTag = ForwardRef; + workInProgress.alternate = current; + current.alternate = workInProgress; + } else { + workInProgress.pendingProps = pendingProps; // Needed because Blocks store data on type. - { - resolvedType = - resolveForwardRefForHotReloading(resolvedType); - } + workInProgress.type = current.type; // We already have an alternate. + // Reset the effect tag. - break getTag; + workInProgress.flags = NoFlags$1; // The effects are no longer valid. - case REACT_MEMO_TYPE: - fiberTag = MemoComponent; - break getTag; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.deletions = null; - case REACT_LAZY_TYPE: - fiberTag = LazyComponent; - resolvedType = null; - break getTag; - } - } + { + // We intentionally reset, rather than copy, actualDuration & actualStartTime. + // This prevents time from endlessly accumulating in new commits. + // This has the downside of resetting values for different priority renders, + // But works for yielding (the common case) and should support resuming. + workInProgress.actualDuration = 0; + workInProgress.actualStartTime = -1; + } + } // Reset all effects except static ones. + // Static effects are not specific to a render. + + + workInProgress.flags = current.flags & StaticMask; + workInProgress.childLanes = current.childLanes; + workInProgress.lanes = current.lanes; + workInProgress.child = current.child; + workInProgress.memoizedProps = current.memoizedProps; + workInProgress.memoizedState = current.memoizedState; + workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so + // it cannot be shared with the current fiber. + + var currentDependencies = current.dependencies; + workInProgress.dependencies = currentDependencies === null ? null : { + lanes: currentDependencies.lanes, + firstContext: currentDependencies.firstContext + }; // These will be overridden during the parent's reconciliation + + workInProgress.sibling = current.sibling; + workInProgress.index = current.index; + workInProgress.ref = current.ref; + workInProgress.refCleanup = current.refCleanup; + + { + workInProgress.selfBaseDuration = current.selfBaseDuration; + workInProgress.treeBaseDuration = current.treeBaseDuration; + } + + { + workInProgress._debugInfo = current._debugInfo; + workInProgress._debugNeedsRemount = current._debugNeedsRemount; + + switch (workInProgress.tag) { + case FunctionComponent: + case SimpleMemoComponent: + workInProgress.type = resolveFunctionForHotReloading(current.type); + break; + + case ClassComponent: + workInProgress.type = resolveClassForHotReloading(current.type); + break; + + case ForwardRef: + workInProgress.type = resolveForwardRefForHotReloading(current.type); + break; + } + } + + return workInProgress; +} // Used to reuse a Fiber for a second pass. + +function resetWorkInProgress(workInProgress, renderLanes) { + // This resets the Fiber to what createFiber or createWorkInProgress would + // have set the values to before during the first pass. Ideally this wouldn't + // be necessary but unfortunately many code paths reads from the workInProgress + // when they should be reading from current and writing to workInProgress. + // We assume pendingProps, index, key, ref, return are still untouched to + // avoid doing another reconciliation. + // Reset the effect flags but keep any Placement tags, since that's something + // that child fiber is setting, not the reconciliation. + workInProgress.flags &= StaticMask | Placement; // The effects are no longer valid. + + var current = workInProgress.alternate; + + if (current === null) { + // Reset to createFiber's initial values. + workInProgress.childLanes = NoLanes; + workInProgress.lanes = renderLanes; + workInProgress.child = null; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.memoizedProps = null; + workInProgress.memoizedState = null; + workInProgress.updateQueue = null; + workInProgress.dependencies = null; + workInProgress.stateNode = null; - var info = ""; + { + // Note: We don't reset the actualTime counts. It's useful to accumulate + // actual time across multiple render passes. + workInProgress.selfBaseDuration = 0; + workInProgress.treeBaseDuration = 0; + } + } else { + // Reset to the cloned values that createWorkInProgress would've. + workInProgress.childLanes = current.childLanes; + workInProgress.lanes = current.lanes; + workInProgress.child = current.child; + workInProgress.subtreeFlags = NoFlags$1; + workInProgress.deletions = null; + workInProgress.memoizedProps = current.memoizedProps; + workInProgress.memoizedState = current.memoizedState; + workInProgress.updateQueue = current.updateQueue; // Needed because Blocks store data on type. + + workInProgress.type = current.type; // Clone the dependencies object. This is mutated during the render phase, so + // it cannot be shared with the current fiber. + + var currentDependencies = current.dependencies; + workInProgress.dependencies = currentDependencies === null ? null : { + lanes: currentDependencies.lanes, + firstContext: currentDependencies.firstContext + }; - { - if ( - type === undefined || - (typeof type === "object" && - type !== null && - Object.keys(type).length === 0) - ) { - info += - " You likely forgot to export your component from the file " + - "it's defined in, or you might have mixed up default and " + - "named imports."; - } + { + // Note: We don't reset the actualTime counts. It's useful to accumulate + // actual time across multiple render passes. + workInProgress.selfBaseDuration = current.selfBaseDuration; + workInProgress.treeBaseDuration = current.treeBaseDuration; + } + } - var ownerName = owner ? getComponentNameFromOwner(owner) : null; + return workInProgress; +} +function createHostRootFiber(tag, isStrictMode, concurrentUpdatesByDefaultOverride) { + var mode; - if (ownerName) { - info += "\n\nCheck the render method of `" + ownerName + "`."; - } - } + if (tag === ConcurrentRoot) { + mode = ConcurrentMode; - throw new Error( - "Element type is invalid: expected a string (for built-in " + - "components) or a class/function (for composite components) " + - ("but got: " + (type == null ? type : typeof type) + "." + info) - ); - } - } - } + if (isStrictMode === true) { + mode |= StrictLegacyMode | StrictEffectsMode; + } + } else { + mode = NoMode; + } - var fiber = createFiber(fiberTag, pendingProps, key, mode); - fiber.elementType = type; - fiber.type = resolvedType; - fiber.lanes = lanes; + if (isDevToolsPresent) { + // Always collect profile timings when DevTools are present. + // This enables DevTools to start capturing timing at any point– + // Without some nodes in the tree having empty base times. + mode |= ProfileMode; + } - { - fiber._debugOwner = owner; - } + return createFiber(HostRoot, null, null, mode); +} +function createFiberFromTypeAndProps(type, // React$ElementType +key, pendingProps, owner, mode, lanes) { + var fiberTag = FunctionComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy. - return fiber; - } - function createFiberFromElement(element, mode, lanes) { - var owner = null; + var resolvedType = type; + + if (typeof type === 'function') { + if (shouldConstruct(type)) { + fiberTag = ClassComponent; { - owner = element._owner; + resolvedType = resolveClassForHotReloading(resolvedType); } - - var type = element.type; - var key = element.key; - var pendingProps = element.props; - var fiber = createFiberFromTypeAndProps( - type, - key, - pendingProps, - owner, - mode, - lanes - ); - + } else { { - fiber._debugOwner = element._owner; + resolvedType = resolveFunctionForHotReloading(resolvedType); } - - return fiber; } - function createFiberFromFragment(elements, mode, lanes, key) { - var fiber = createFiber(Fragment, elements, key, mode); - fiber.lanes = lanes; - return fiber; + } else if (typeof type === 'string') { + { + fiberTag = HostComponent; } + } else { + getTag: switch (type) { + case REACT_FRAGMENT_TYPE: + return createFiberFromFragment(pendingProps.children, mode, lanes, key); - function createFiberFromProfiler(pendingProps, mode, lanes, key) { - { - if (typeof pendingProps.id !== "string") { - error( - 'Profiler must specify an "id" of type `string` as a prop. Received the type `%s` instead.', - typeof pendingProps.id - ); + case REACT_STRICT_MODE_TYPE: + fiberTag = Mode; + mode |= StrictLegacyMode; + + if ((mode & ConcurrentMode) !== NoMode) { + // Strict effects should never run on legacy roots + mode |= StrictEffectsMode; } - } - var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); - fiber.elementType = REACT_PROFILER_TYPE; - fiber.lanes = lanes; + break; - { - fiber.stateNode = { - effectDuration: 0, - passiveEffectDuration: 0 - }; - } + case REACT_PROFILER_TYPE: + return createFiberFromProfiler(pendingProps, mode, lanes, key); - return fiber; - } - - function createFiberFromSuspense(pendingProps, mode, lanes, key) { - var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); - fiber.elementType = REACT_SUSPENSE_TYPE; - fiber.lanes = lanes; - return fiber; - } - function createFiberFromSuspenseList(pendingProps, mode, lanes, key) { - var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode); - fiber.elementType = REACT_SUSPENSE_LIST_TYPE; - fiber.lanes = lanes; - return fiber; - } - function createFiberFromOffscreen(pendingProps, mode, lanes, key) { - var fiber = createFiber(OffscreenComponent, pendingProps, key, mode); - fiber.elementType = REACT_OFFSCREEN_TYPE; - fiber.lanes = lanes; - var primaryChildInstance = { - _visibility: OffscreenVisible, - _pendingVisibility: OffscreenVisible, - _pendingMarkers: null, - _retryCache: null, - _transitions: null, - _current: null, - detach: function () { - return detachOffscreenInstance(primaryChildInstance); - }, - attach: function () { - return attachOffscreenInstance(primaryChildInstance); - } - }; - fiber.stateNode = primaryChildInstance; - return fiber; - } - function createFiberFromText(content, mode, lanes) { - var fiber = createFiber(HostText, content, null, mode); - fiber.lanes = lanes; - return fiber; - } - function createFiberFromPortal(portal, mode, lanes) { - var pendingProps = portal.children !== null ? portal.children : []; - var fiber = createFiber(HostPortal, pendingProps, portal.key, mode); - fiber.lanes = lanes; - fiber.stateNode = { - containerInfo: portal.containerInfo, - pendingChildren: null, - // Used by persistent updates - implementation: portal.implementation - }; - return fiber; - } - - function FiberRootNode( - containerInfo, // $FlowFixMe[missing-local-annot] - tag, - hydrate, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - formState - ) { - this.tag = tag; - this.containerInfo = containerInfo; - this.pendingChildren = null; - this.current = null; - this.pingCache = null; - this.finishedWork = null; - this.timeoutHandle = noTimeout; - this.cancelPendingCommit = null; - this.context = null; - this.pendingContext = null; - this.next = null; - this.callbackNode = null; - this.callbackPriority = NoLane; - this.expirationTimes = createLaneMap(NoTimestamp); - this.pendingLanes = NoLanes; - this.suspendedLanes = NoLanes; - this.pingedLanes = NoLanes; - this.expiredLanes = NoLanes; - this.finishedLanes = NoLanes; - this.errorRecoveryDisabledLanes = NoLanes; - this.shellSuspendCounter = 0; - this.entangledLanes = NoLanes; - this.entanglements = createLaneMap(NoLanes); - this.hiddenUpdates = createLaneMap(null); - this.identifierPrefix = identifierPrefix; - this.onUncaughtError = onUncaughtError; - this.onCaughtError = onCaughtError; - this.onRecoverableError = onRecoverableError; + case REACT_SUSPENSE_TYPE: + return createFiberFromSuspense(pendingProps, mode, lanes, key); - { - this.pooledCache = null; - this.pooledCacheLanes = NoLanes; - } + case REACT_SUSPENSE_LIST_TYPE: + return createFiberFromSuspenseList(pendingProps, mode, lanes, key); - this.formState = formState; - this.incompleteTransitions = new Map(); + case REACT_OFFSCREEN_TYPE: + return createFiberFromOffscreen(pendingProps, mode, lanes, key); - { - this.effectDuration = 0; - this.passiveEffectDuration = 0; - } + case REACT_LEGACY_HIDDEN_TYPE: - { - this.memoizedUpdaters = new Set(); - var pendingUpdatersLaneMap = (this.pendingUpdatersLaneMap = []); + // Fall through - for (var _i = 0; _i < TotalLanes; _i++) { - pendingUpdatersLaneMap.push(new Set()); - } - } + case REACT_SCOPE_TYPE: - { + // Fall through + + case REACT_TRACING_MARKER_TYPE: + + // Fall through + + case REACT_DEBUG_TRACING_MODE_TYPE: + + // Fall through + + default: { - switch (tag) { - case ConcurrentRoot: - this._debugRootType = hydrate ? "hydrateRoot()" : "createRoot()"; - break; + if (typeof type === 'object' && type !== null) { + switch (type.$$typeof) { + case REACT_PROVIDER_TYPE: + if (!enableRenderableContext) { + fiberTag = ContextProvider; + break getTag; + } - case LegacyRoot: - this._debugRootType = hydrate ? "hydrate()" : "render()"; - break; - } - } - } - } + // Fall through - function createFiberRoot( - containerInfo, - tag, - hydrate, - initialChildren, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, // TODO: We have several of these arguments that are conceptually part of the - // host config, but because they are passed in at runtime, we have to thread - // them through the root constructor. Perhaps we should put them all into a - // single type, like a DynamicHostConfig that is defined by the renderer. - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks, - formState - ) { - // $FlowFixMe[invalid-constructor] Flow no longer supports calling new on functions - var root = new FiberRootNode( - containerInfo, - tag, - hydrate, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - formState - ); - // stateNode is any. - - var uninitializedFiber = createHostRootFiber(tag, isStrictMode); - root.current = uninitializedFiber; - uninitializedFiber.stateNode = root; + case REACT_CONTEXT_TYPE: + if (enableRenderableContext) { + fiberTag = ContextProvider; + break getTag; + } else { + fiberTag = ContextConsumer; + break getTag; + } - { - var initialCache = createCache(); - retainCache(initialCache); // The pooledCache is a fresh cache instance that is used temporarily - // for newly mounted boundaries during a render. In general, the - // pooledCache is always cleared from the root at the end of a render: - // it is either released when render commits, or moved to an Offscreen - // component if rendering suspends. Because the lifetime of the pooled - // cache is distinct from the main memoizedState.cache, it must be - // retained separately. - - root.pooledCache = initialCache; - retainCache(initialCache); - var initialState = { - element: initialChildren, - isDehydrated: hydrate, - cache: initialCache - }; - uninitializedFiber.memoizedState = initialState; - } + case REACT_CONSUMER_TYPE: + if (enableRenderableContext) { + fiberTag = ContextConsumer; + break getTag; + } - initializeUpdateQueue(uninitializedFiber); - return root; - } + // Fall through - var ReactVersion = "19.0.0-canary-ad24d706"; + case REACT_FORWARD_REF_TYPE: + fiberTag = ForwardRef; - /* - * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol - * and Temporal.* types. See https://github.com/facebook/react/pull/22064. - * - * The functions in this module will throw an easier-to-understand, - * easier-to-debug exception with a clear errors message message explaining the - * problem. (Instead of a confusing exception thrown inside the implementation - * of the `value` object). - */ - // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. - function typeName(value) { - { - // toStringTag is needed for namespaced types like Temporal.Instant - var hasToStringTag = typeof Symbol === "function" && Symbol.toStringTag; - var type = - (hasToStringTag && value[Symbol.toStringTag]) || - value.constructor.name || - "Object"; // $FlowFixMe[incompatible-return] + { + resolvedType = resolveForwardRefForHotReloading(resolvedType); + } - return type; - } - } // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + break getTag; - function willCoercionThrow(value) { - { - try { - testStringCoercion(value); - return false; - } catch (e) { - return true; - } - } - } + case REACT_MEMO_TYPE: + fiberTag = MemoComponent; + break getTag; - function testStringCoercion(value) { - // If you ended up here by following an exception call stack, here's what's - // happened: you supplied an object or symbol value to React (as a prop, key, - // DOM attribute, CSS property, string ref, etc.) and when React tried to - // coerce it to a string using `'' + value`, an exception was thrown. - // - // The most common types that will cause this exception are `Symbol` instances - // and Temporal objects like `Temporal.Instant`. But any object that has a - // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this - // exception. (Library authors do this to prevent users from using built-in - // numeric operators like `+` or comparison operators like `>=` because custom - // methods are needed to perform accurate arithmetic or comparison.) - // - // To fix the problem, coerce this object or symbol value to a string before - // passing it to React. The most reliable way is usually `String(value)`. - // - // To find which value is throwing, check the browser or debugger console. - // Before this exception was thrown, there should be `console.error` output - // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the - // problem and how that type was used: key, atrribute, input value prop, etc. - // In most cases, this console output also shows the component and its - // ancestor components where the exception happened. - // - // eslint-disable-next-line react-internal/safe-string-coercion - return "" + value; - } - function checkKeyStringCoercion(value) { - { - if (willCoercionThrow(value)) { - error( - "The provided key is an unsupported type %s." + - " This value must be coerced to a string before using it here.", - typeName(value) - ); + case REACT_LAZY_TYPE: + fiberTag = LazyComponent; + resolvedType = null; + break getTag; + } + } + + var info = ''; - return testStringCoercion(value); // throw (to help callers find troubleshooting comments) + { + if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) { + info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.'; + } + + var ownerName = owner ? getComponentNameFromOwner(owner) : null; + + if (ownerName) { + info += '\n\nCheck the render method of `' + ownerName + '`.'; + } + } + + throw new Error('Element type is invalid: expected a string (for built-in ' + 'components) or a class/function (for composite components) ' + ("but got: " + (type == null ? type : typeof type) + "." + info)); } - } } + } - function createPortal$1( - children, - containerInfo, // TODO: figure out the API for cross-renderer implementation. - implementation - ) { - var key = - arguments.length > 3 && arguments[3] !== undefined - ? arguments[3] - : null; + var fiber = createFiber(fiberTag, pendingProps, key, mode); + fiber.elementType = type; + fiber.type = resolvedType; + fiber.lanes = lanes; - { - checkKeyStringCoercion(key); - } + { + fiber._debugOwner = owner; + } - return { - // This tag allow us to uniquely identify this as a React Portal - $$typeof: REACT_PORTAL_TYPE, - key: key == null ? null : "" + key, - children: children, - containerInfo: containerInfo, - implementation: implementation - }; + return fiber; +} +function createFiberFromElement(element, mode, lanes) { + var owner = null; + + { + owner = element._owner; + } + + var type = element.type; + var key = element.key; + var pendingProps = element.props; + var fiber = createFiberFromTypeAndProps(type, key, pendingProps, owner, mode, lanes); + + { + fiber._debugOwner = element._owner; + } + + return fiber; +} +function createFiberFromFragment(elements, mode, lanes, key) { + var fiber = createFiber(Fragment, elements, key, mode); + fiber.lanes = lanes; + return fiber; +} + +function createFiberFromProfiler(pendingProps, mode, lanes, key) { + { + if (typeof pendingProps.id !== 'string') { + error('Profiler must specify an "id" of type `string` as a prop. Received the type `%s` instead.', typeof pendingProps.id); } + } - // Might add PROFILE later. + var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); + fiber.elementType = REACT_PROFILER_TYPE; + fiber.lanes = lanes; + + { + fiber.stateNode = { + effectDuration: 0, + passiveEffectDuration: 0 + }; + } + + return fiber; +} - var didWarnAboutNestedUpdates; - var didWarnAboutFindNodeInStrictMode; +function createFiberFromSuspense(pendingProps, mode, lanes, key) { + var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); + fiber.elementType = REACT_SUSPENSE_TYPE; + fiber.lanes = lanes; + return fiber; +} +function createFiberFromSuspenseList(pendingProps, mode, lanes, key) { + var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode); + fiber.elementType = REACT_SUSPENSE_LIST_TYPE; + fiber.lanes = lanes; + return fiber; +} +function createFiberFromOffscreen(pendingProps, mode, lanes, key) { + var fiber = createFiber(OffscreenComponent, pendingProps, key, mode); + fiber.elementType = REACT_OFFSCREEN_TYPE; + fiber.lanes = lanes; + var primaryChildInstance = { + _visibility: OffscreenVisible, + _pendingVisibility: OffscreenVisible, + _pendingMarkers: null, + _retryCache: null, + _transitions: null, + _current: null, + detach: function () { + return detachOffscreenInstance(primaryChildInstance); + }, + attach: function () { + return attachOffscreenInstance(primaryChildInstance); + } + }; + fiber.stateNode = primaryChildInstance; + return fiber; +} +function createFiberFromText(content, mode, lanes) { + var fiber = createFiber(HostText, content, null, mode); + fiber.lanes = lanes; + return fiber; +} +function createFiberFromPortal(portal, mode, lanes) { + var pendingProps = portal.children !== null ? portal.children : []; + var fiber = createFiber(HostPortal, pendingProps, portal.key, mode); + fiber.lanes = lanes; + fiber.stateNode = { + containerInfo: portal.containerInfo, + pendingChildren: null, + // Used by persistent updates + implementation: portal.implementation + }; + return fiber; +} +function FiberRootNode(containerInfo, // $FlowFixMe[missing-local-annot] +tag, hydrate, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, formState) { + this.tag = tag; + this.containerInfo = containerInfo; + this.pendingChildren = null; + this.current = null; + this.pingCache = null; + this.finishedWork = null; + this.timeoutHandle = noTimeout; + this.cancelPendingCommit = null; + this.context = null; + this.pendingContext = null; + this.next = null; + this.callbackNode = null; + this.callbackPriority = NoLane; + this.expirationTimes = createLaneMap(NoTimestamp); + this.pendingLanes = NoLanes; + this.suspendedLanes = NoLanes; + this.pingedLanes = NoLanes; + this.expiredLanes = NoLanes; + this.finishedLanes = NoLanes; + this.errorRecoveryDisabledLanes = NoLanes; + this.shellSuspendCounter = 0; + this.entangledLanes = NoLanes; + this.entanglements = createLaneMap(NoLanes); + this.hiddenUpdates = createLaneMap(null); + this.identifierPrefix = identifierPrefix; + this.onUncaughtError = onUncaughtError; + this.onCaughtError = onCaughtError; + this.onRecoverableError = onRecoverableError; + + { + this.pooledCache = null; + this.pooledCacheLanes = NoLanes; + } + + this.formState = formState; + this.incompleteTransitions = new Map(); + + { + this.effectDuration = 0; + this.passiveEffectDuration = 0; + } + + { + this.memoizedUpdaters = new Set(); + var pendingUpdatersLaneMap = this.pendingUpdatersLaneMap = []; + + for (var _i = 0; _i < TotalLanes; _i++) { + pendingUpdatersLaneMap.push(new Set()); + } + } + + { { - didWarnAboutNestedUpdates = false; - didWarnAboutFindNodeInStrictMode = {}; - } + switch (tag) { + case ConcurrentRoot: + this._debugRootType = hydrate ? 'hydrateRoot()' : 'createRoot()'; + break; - function getContextForSubtree(parentComponent) { - if (!parentComponent) { - return emptyContextObject; + case LegacyRoot: + this._debugRootType = hydrate ? 'hydrate()' : 'render()'; + break; } + } + } +} - var fiber = get(parentComponent); - var parentContext = findCurrentUnmaskedContext(fiber); +function createFiberRoot(containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, // TODO: We have several of these arguments that are conceptually part of the +// host config, but because they are passed in at runtime, we have to thread +// them through the root constructor. Perhaps we should put them all into a +// single type, like a DynamicHostConfig that is defined by the renderer. +identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks, formState) { + // $FlowFixMe[invalid-constructor] Flow no longer supports calling new on functions + var root = new FiberRootNode(containerInfo, tag, hydrate, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, formState); + // stateNode is any. + + + var uninitializedFiber = createHostRootFiber(tag, isStrictMode); + root.current = uninitializedFiber; + uninitializedFiber.stateNode = root; + + { + var initialCache = createCache(); + retainCache(initialCache); // The pooledCache is a fresh cache instance that is used temporarily + // for newly mounted boundaries during a render. In general, the + // pooledCache is always cleared from the root at the end of a render: + // it is either released when render commits, or moved to an Offscreen + // component if rendering suspends. Because the lifetime of the pooled + // cache is distinct from the main memoizedState.cache, it must be + // retained separately. + + root.pooledCache = initialCache; + retainCache(initialCache); + var initialState = { + element: initialChildren, + isDehydrated: hydrate, + cache: initialCache + }; + uninitializedFiber.memoizedState = initialState; + } - if (fiber.tag === ClassComponent) { - var Component = fiber.type; + initializeUpdateQueue(uninitializedFiber); + return root; +} - if (isContextProvider(Component)) { - return processChildContext(fiber, Component, parentContext); - } - } +var ReactVersion = '19.0.0-canary-4c1bc958'; - return parentContext; +/* + * The `'' + value` pattern (used in perf-sensitive code) throws for Symbol + * and Temporal.* types. See https://github.com/facebook/react/pull/22064. + * + * The functions in this module will throw an easier-to-understand, + * easier-to-debug exception with a clear errors message message explaining the + * problem. (Instead of a confusing exception thrown inside the implementation + * of the `value` object). + */ +// $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. +function typeName(value) { + { + // toStringTag is needed for namespaced types like Temporal.Instant + var hasToStringTag = typeof Symbol === 'function' && Symbol.toStringTag; + var type = hasToStringTag && value[Symbol.toStringTag] || value.constructor.name || 'Object'; // $FlowFixMe[incompatible-return] + + return type; + } +} // $FlowFixMe[incompatible-return] only called in DEV, so void return is not possible. + + +function willCoercionThrow(value) { + { + try { + testStringCoercion(value); + return false; + } catch (e) { + return true; } + } +} - function findHostInstanceWithWarning(component, methodName) { - { - var fiber = get(component); +function testStringCoercion(value) { + // If you ended up here by following an exception call stack, here's what's + // happened: you supplied an object or symbol value to React (as a prop, key, + // DOM attribute, CSS property, string ref, etc.) and when React tried to + // coerce it to a string using `'' + value`, an exception was thrown. + // + // The most common types that will cause this exception are `Symbol` instances + // and Temporal objects like `Temporal.Instant`. But any object that has a + // `valueOf` or `[Symbol.toPrimitive]` method that throws will also cause this + // exception. (Library authors do this to prevent users from using built-in + // numeric operators like `+` or comparison operators like `>=` because custom + // methods are needed to perform accurate arithmetic or comparison.) + // + // To fix the problem, coerce this object or symbol value to a string before + // passing it to React. The most reliable way is usually `String(value)`. + // + // To find which value is throwing, check the browser or debugger console. + // Before this exception was thrown, there should be `console.error` output + // that shows the type (Symbol, Temporal.PlainDate, etc.) that caused the + // problem and how that type was used: key, atrribute, input value prop, etc. + // In most cases, this console output also shows the component and its + // ancestor components where the exception happened. + // + // eslint-disable-next-line react-internal/safe-string-coercion + return '' + value; +} +function checkKeyStringCoercion(value) { + { + if (willCoercionThrow(value)) { + error('The provided key is an unsupported type %s.' + ' This value must be coerced to a string before using it here.', typeName(value)); - if (fiber === undefined) { - if (typeof component.render === "function") { - throw new Error("Unable to find node on an unmounted component."); - } else { - var keys = Object.keys(component).join(","); - throw new Error( - "Argument appears to not be a ReactComponent. Keys: " + keys - ); - } - } + return testStringCoercion(value); // throw (to help callers find troubleshooting comments) + } + } +} - var hostFiber = findCurrentHostFiber(fiber); +function createPortal$1(children, containerInfo, // TODO: figure out the API for cross-renderer implementation. +implementation) { + var key = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null; + + { + checkKeyStringCoercion(key); + } + + return { + // This tag allow us to uniquely identify this as a React Portal + $$typeof: REACT_PORTAL_TYPE, + key: key == null ? null : '' + key, + children: children, + containerInfo: containerInfo, + implementation: implementation + }; +} - if (hostFiber === null) { - return null; - } +// Might add PROFILE later. - if (hostFiber.mode & StrictLegacyMode) { - var componentName = getComponentNameFromFiber(fiber) || "Component"; +var didWarnAboutNestedUpdates; +var didWarnAboutFindNodeInStrictMode; - if (!didWarnAboutFindNodeInStrictMode[componentName]) { - didWarnAboutFindNodeInStrictMode[componentName] = true; - var previousFiber = current; +{ + didWarnAboutNestedUpdates = false; + didWarnAboutFindNodeInStrictMode = {}; +} - try { - setCurrentFiber(hostFiber); - - if (fiber.mode & StrictLegacyMode) { - error( - "%s is deprecated in StrictMode. " + - "%s was passed an instance of %s which is inside StrictMode. " + - "Instead, add a ref directly to the element you want to reference. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-find-node", - methodName, - methodName, - componentName - ); - } else { - error( - "%s is deprecated in StrictMode. " + - "%s was passed an instance of %s which renders StrictMode children. " + - "Instead, add a ref directly to the element you want to reference. " + - "Learn more about using refs safely here: " + - "https://react.dev/link/strict-mode-find-node", - methodName, - methodName, - componentName - ); - } - } finally { - // Ideally this should reset to previous but this shouldn't be called in - // render and there's another warning for that anyway. - if (previousFiber) { - setCurrentFiber(previousFiber); - } else { - resetCurrentFiber(); - } - } - } - } +function getContextForSubtree(parentComponent) { + if (!parentComponent) { + return emptyContextObject; + } - return getPublicInstance(hostFiber.stateNode); - } - } - - function createContainer( - containerInfo, - tag, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks - ) { - var hydrate = false; - var initialChildren = null; - return createFiberRoot( - containerInfo, - tag, - hydrate, - initialChildren, - hydrationCallbacks, - isStrictMode, - concurrentUpdatesByDefaultOverride, - identifierPrefix, - onUncaughtError, - onCaughtError, - onRecoverableError, - transitionCallbacks, - null - ); - } - function updateContainer(element, container, parentComponent, callback) { - var current = container.current; - var lane = requestUpdateLane(current); - updateContainerImpl( - current, - lane, - element, - container, - parentComponent, - callback - ); - return lane; - } - function updateContainerSync( - element, - container, - parentComponent, - callback - ) { - if (container.tag === LegacyRoot) { - flushPassiveEffects(); - } + var fiber = get(parentComponent); + var parentContext = findCurrentUnmaskedContext(fiber); - var current = container.current; - updateContainerImpl( - current, - SyncLane, - element, - container, - parentComponent, - callback - ); - return SyncLane; - } + if (fiber.tag === ClassComponent) { + var Component = fiber.type; - function updateContainerImpl( - rootFiber, - lane, - element, - container, - parentComponent, - callback - ) { - { - onScheduleRoot(container, element); - } + if (isContextProvider(Component)) { + return processChildContext(fiber, Component, parentContext); + } + } - { - markRenderScheduled(lane); - } + return parentContext; +} - var context = getContextForSubtree(parentComponent); +function findHostInstanceWithWarning(component, methodName) { + { + var fiber = get(component); - if (container.context === null) { - container.context = context; + if (fiber === undefined) { + if (typeof component.render === 'function') { + throw new Error('Unable to find node on an unmounted component.'); } else { - container.pendingContext = context; + var keys = Object.keys(component).join(','); + throw new Error("Argument appears to not be a ReactComponent. Keys: " + keys); } + } - { - if (isRendering && current !== null && !didWarnAboutNestedUpdates) { - didWarnAboutNestedUpdates = true; + var hostFiber = findCurrentHostFiber(fiber); - error( - "Render methods should be a pure function of props and state; " + - "triggering nested component updates from render is not allowed. " + - "If necessary, trigger nested updates in componentDidUpdate.\n\n" + - "Check the render method of %s.", - getComponentNameFromFiber(current) || "Unknown" - ); - } - } + if (hostFiber === null) { + return null; + } - var update = createUpdate(lane); // Caution: React DevTools currently depends on this property - // being called "element". + if (hostFiber.mode & StrictLegacyMode) { + var componentName = getComponentNameFromFiber(fiber) || 'Component'; - update.payload = { - element: element - }; - callback = callback === undefined ? null : callback; + if (!didWarnAboutFindNodeInStrictMode[componentName]) { + didWarnAboutFindNodeInStrictMode[componentName] = true; + var previousFiber = current; - if (callback !== null) { - { - if (typeof callback !== "function") { - error( - "Expected the last optional `callback` argument to be a " + - "function. Instead received: %s.", - callback - ); + try { + setCurrentFiber(hostFiber); + + if (fiber.mode & StrictLegacyMode) { + error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which is inside StrictMode. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-find-node', methodName, methodName, componentName); + } else { + error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which renders StrictMode children. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://react.dev/link/strict-mode-find-node', methodName, methodName, componentName); + } + } finally { + // Ideally this should reset to previous but this shouldn't be called in + // render and there's another warning for that anyway. + if (previousFiber) { + setCurrentFiber(previousFiber); + } else { + resetCurrentFiber(); } } - - update.callback = callback; } + } - var root = enqueueUpdate(rootFiber, update, lane); + return getPublicInstance(hostFiber.stateNode); + } +} - if (root !== null) { - scheduleUpdateOnFiber(root, rootFiber, lane); - entangleTransitions(root, rootFiber, lane); - } - } - function getPublicRootInstance(container) { - var containerFiber = container.current; +function createContainer(containerInfo, tag, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks) { + var hydrate = false; + var initialChildren = null; + return createFiberRoot(containerInfo, tag, hydrate, initialChildren, hydrationCallbacks, isStrictMode, concurrentUpdatesByDefaultOverride, identifierPrefix, onUncaughtError, onCaughtError, onRecoverableError, transitionCallbacks, null); +} +function updateContainer(element, container, parentComponent, callback) { + var current = container.current; + var lane = requestUpdateLane(current); + updateContainerImpl(current, lane, element, container, parentComponent, callback); + return lane; +} +function updateContainerSync(element, container, parentComponent, callback) { + if (container.tag === LegacyRoot) { + flushPassiveEffects(); + } + + var current = container.current; + updateContainerImpl(current, SyncLane, element, container, parentComponent, callback); + return SyncLane; +} - if (!containerFiber.child) { - return null; - } +function updateContainerImpl(rootFiber, lane, element, container, parentComponent, callback) { + { + onScheduleRoot(container, element); + } - switch (containerFiber.child.tag) { - case HostSingleton: - case HostComponent: - return getPublicInstance(containerFiber.child.stateNode); + { + markRenderScheduled(lane); + } - default: - return containerFiber.child.stateNode; - } - } + var context = getContextForSubtree(parentComponent); - var shouldErrorImpl = function (fiber) { - return null; - }; + if (container.context === null) { + container.context = context; + } else { + container.pendingContext = context; + } + + { + if (isRendering && current !== null && !didWarnAboutNestedUpdates) { + didWarnAboutNestedUpdates = true; - function shouldError(fiber) { - return shouldErrorImpl(fiber); + error('Render methods should be a pure function of props and state; ' + 'triggering nested component updates from render is not allowed. ' + 'If necessary, trigger nested updates in componentDidUpdate.\n\n' + 'Check the render method of %s.', getComponentNameFromFiber(current) || 'Unknown'); } + } - var shouldSuspendImpl = function (fiber) { - return false; - }; + var update = createUpdate(lane); // Caution: React DevTools currently depends on this property + // being called "element". - function shouldSuspend(fiber) { - return shouldSuspendImpl(fiber); - } - var overrideHookState = null; - var overrideHookStateDeletePath = null; - var overrideHookStateRenamePath = null; - var overrideProps = null; - var overridePropsDeletePath = null; - var overridePropsRenamePath = null; - var scheduleUpdate = null; - var setErrorHandler = null; - var setSuspenseHandler = null; + update.payload = { + element: element + }; + callback = callback === undefined ? null : callback; + if (callback !== null) { { - var copyWithDeleteImpl = function (obj, path, index) { - var key = path[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); + if (typeof callback !== 'function') { + error('Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback); + } + } - if (index + 1 === path.length) { - if (isArray(updated)) { - updated.splice(key, 1); - } else { - delete updated[key]; - } + update.callback = callback; + } - return updated; - } // $FlowFixMe[incompatible-use] number or string is fine here + var root = enqueueUpdate(rootFiber, update, lane); - updated[key] = copyWithDeleteImpl(obj[key], path, index + 1); - return updated; - }; + if (root !== null) { + scheduleUpdateOnFiber(root, rootFiber, lane); + entangleTransitions(root, rootFiber, lane); + } +} +function getPublicRootInstance(container) { + var containerFiber = container.current; - var copyWithDelete = function (obj, path) { - return copyWithDeleteImpl(obj, path, 0); - }; + if (!containerFiber.child) { + return null; + } - var copyWithRenameImpl = function (obj, oldPath, newPath, index) { - var oldKey = oldPath[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); + switch (containerFiber.child.tag) { + case HostSingleton: + case HostComponent: + return getPublicInstance(containerFiber.child.stateNode); - if (index + 1 === oldPath.length) { - var newKey = newPath[index]; // $FlowFixMe[incompatible-use] number or string is fine here + default: + return containerFiber.child.stateNode; + } +} - updated[newKey] = updated[oldKey]; +var shouldErrorImpl = function (fiber) { + return null; +}; - if (isArray(updated)) { - updated.splice(oldKey, 1); - } else { - delete updated[oldKey]; - } - } else { - // $FlowFixMe[incompatible-use] number or string is fine here - updated[oldKey] = copyWithRenameImpl( - // $FlowFixMe[incompatible-use] number or string is fine here - obj[oldKey], - oldPath, - newPath, - index + 1 - ); - } +function shouldError(fiber) { + return shouldErrorImpl(fiber); +} - return updated; - }; +var shouldSuspendImpl = function (fiber) { + return false; +}; - var copyWithRename = function (obj, oldPath, newPath) { - if (oldPath.length !== newPath.length) { - warn("copyWithRename() expects paths of the same length"); +function shouldSuspend(fiber) { + return shouldSuspendImpl(fiber); +} +var overrideHookState = null; +var overrideHookStateDeletePath = null; +var overrideHookStateRenamePath = null; +var overrideProps = null; +var overridePropsDeletePath = null; +var overridePropsRenamePath = null; +var scheduleUpdate = null; +var setErrorHandler = null; +var setSuspenseHandler = null; + +{ + var copyWithDeleteImpl = function (obj, path, index) { + var key = path[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); + + if (index + 1 === path.length) { + if (isArray(updated)) { + updated.splice(key, 1); + } else { + delete updated[key]; + } - return; - } else { - for (var i = 0; i < newPath.length - 1; i++) { - if (oldPath[i] !== newPath[i]) { - warn( - "copyWithRename() expects paths to be the same except for the deepest key" - ); + return updated; + } // $FlowFixMe[incompatible-use] number or string is fine here - return; - } - } - } - return copyWithRenameImpl(obj, oldPath, newPath, 0); - }; + updated[key] = copyWithDeleteImpl(obj[key], path, index + 1); + return updated; + }; - var copyWithSetImpl = function (obj, path, index, value) { - if (index >= path.length) { - return value; - } + var copyWithDelete = function (obj, path) { + return copyWithDeleteImpl(obj, path, 0); + }; - var key = path[index]; - var updated = isArray(obj) ? obj.slice() : assign({}, obj); // $FlowFixMe[incompatible-use] number or string is fine here + var copyWithRenameImpl = function (obj, oldPath, newPath, index) { + var oldKey = oldPath[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); - updated[key] = copyWithSetImpl(obj[key], path, index + 1, value); - return updated; - }; + if (index + 1 === oldPath.length) { + var newKey = newPath[index]; // $FlowFixMe[incompatible-use] number or string is fine here - var copyWithSet = function (obj, path, value) { - return copyWithSetImpl(obj, path, 0, value); - }; + updated[newKey] = updated[oldKey]; - var findHook = function (fiber, id) { - // For now, the "id" of stateful hooks is just the stateful hook index. - // This may change in the future with e.g. nested hooks. - var currentHook = fiber.memoizedState; + if (isArray(updated)) { + updated.splice(oldKey, 1); + } else { + delete updated[oldKey]; + } + } else { + // $FlowFixMe[incompatible-use] number or string is fine here + updated[oldKey] = copyWithRenameImpl( // $FlowFixMe[incompatible-use] number or string is fine here + obj[oldKey], oldPath, newPath, index + 1); + } - while (currentHook !== null && id > 0) { - currentHook = currentHook.next; - id--; - } + return updated; + }; - return currentHook; - }; // Support DevTools editable values for useState and useReducer. + var copyWithRename = function (obj, oldPath, newPath) { + if (oldPath.length !== newPath.length) { + warn('copyWithRename() expects paths of the same length'); - overrideHookState = function (fiber, id, path, value) { - var hook = findHook(fiber, id); + return; + } else { + for (var i = 0; i < newPath.length - 1; i++) { + if (oldPath[i] !== newPath[i]) { + warn('copyWithRename() expects paths to be the same except for the deepest key'); - if (hook !== null) { - var newState = copyWithSet(hook.memoizedState, path, value); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + return; + } + } + } - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + return copyWithRenameImpl(obj, oldPath, newPath, 0); + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; + var copyWithSetImpl = function (obj, path, index, value) { + if (index >= path.length) { + return value; + } - overrideHookStateDeletePath = function (fiber, id, path) { - var hook = findHook(fiber, id); + var key = path[index]; + var updated = isArray(obj) ? obj.slice() : assign({}, obj); // $FlowFixMe[incompatible-use] number or string is fine here - if (hook !== null) { - var newState = copyWithDelete(hook.memoizedState, path); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + updated[key] = copyWithSetImpl(obj[key], path, index + 1, value); + return updated; + }; - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + var copyWithSet = function (obj, path, value) { + return copyWithSetImpl(obj, path, 0, value); + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; + var findHook = function (fiber, id) { + // For now, the "id" of stateful hooks is just the stateful hook index. + // This may change in the future with e.g. nested hooks. + var currentHook = fiber.memoizedState; - overrideHookStateRenamePath = function (fiber, id, oldPath, newPath) { - var hook = findHook(fiber, id); + while (currentHook !== null && id > 0) { + currentHook = currentHook.next; + id--; + } - if (hook !== null) { - var newState = copyWithRename(hook.memoizedState, oldPath, newPath); - hook.memoizedState = newState; - hook.baseState = newState; // We aren't actually adding an update to the queue, - // because there is no update we can add for useReducer hooks that won't trigger an error. - // (There's no appropriate action type for DevTools overrides.) - // As a result though, React will see the scheduled update as a noop and bailout. - // Shallow cloning props works as a workaround for now to bypass the bailout check. + return currentHook; + }; // Support DevTools editable values for useState and useReducer. - fiber.memoizedProps = assign({}, fiber.memoizedProps); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - } - }; // Support DevTools props for function components, forwardRef, memo, host components, etc. + overrideHookState = function (fiber, id, path, value) { + var hook = findHook(fiber, id); - overrideProps = function (fiber, path, value) { - fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value); + if (hook !== null) { + var newState = copyWithSet(hook.memoizedState, path, value); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + overrideHookStateDeletePath = function (fiber, id, path) { + var hook = findHook(fiber, id); - overridePropsDeletePath = function (fiber, path) { - fiber.pendingProps = copyWithDelete(fiber.memoizedProps, path); + if (hook !== null) { + var newState = copyWithDelete(hook.memoizedState, path); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + overrideHookStateRenamePath = function (fiber, id, oldPath, newPath) { + var hook = findHook(fiber, id); - overridePropsRenamePath = function (fiber, oldPath, newPath) { - fiber.pendingProps = copyWithRename( - fiber.memoizedProps, - oldPath, - newPath - ); + if (hook !== null) { + var newState = copyWithRename(hook.memoizedState, oldPath, newPath); + hook.memoizedState = newState; + hook.baseState = newState; // We aren't actually adding an update to the queue, + // because there is no update we can add for useReducer hooks that won't trigger an error. + // (There's no appropriate action type for DevTools overrides.) + // As a result though, React will see the scheduled update as a noop and bailout. + // Shallow cloning props works as a workaround for now to bypass the bailout check. - if (fiber.alternate) { - fiber.alternate.pendingProps = fiber.pendingProps; - } + fiber.memoizedProps = assign({}, fiber.memoizedProps); + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); + } + } + }; // Support DevTools props for function components, forwardRef, memo, host components, etc. - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; - scheduleUpdate = function (fiber) { - var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + overrideProps = function (fiber, path, value) { + fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value); - if (root !== null) { - scheduleUpdateOnFiber(root, fiber, SyncLane); - } - }; + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } - setErrorHandler = function (newShouldErrorImpl) { - shouldErrorImpl = newShouldErrorImpl; - }; + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - setSuspenseHandler = function (newShouldSuspendImpl) { - shouldSuspendImpl = newShouldSuspendImpl; - }; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); } + }; - function findHostInstanceByFiber(fiber) { - var hostFiber = findCurrentHostFiber(fiber); + overridePropsDeletePath = function (fiber, path) { + fiber.pendingProps = copyWithDelete(fiber.memoizedProps, path); - if (hostFiber === null) { - return null; - } + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; + } + + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); - return hostFiber.stateNode; + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); } + }; - function emptyFindFiberByHostInstance(instance) { - return null; + overridePropsRenamePath = function (fiber, oldPath, newPath) { + fiber.pendingProps = copyWithRename(fiber.memoizedProps, oldPath, newPath); + + if (fiber.alternate) { + fiber.alternate.pendingProps = fiber.pendingProps; } - function getCurrentFiberForDevTools() { - return current; + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); } + }; - function injectIntoDevTools(devToolsConfig) { - var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance; - return injectInternals({ - bundleType: devToolsConfig.bundleType, - version: devToolsConfig.version, - rendererPackageName: devToolsConfig.rendererPackageName, - rendererConfig: devToolsConfig.rendererConfig, - overrideHookState: overrideHookState, - overrideHookStateDeletePath: overrideHookStateDeletePath, - overrideHookStateRenamePath: overrideHookStateRenamePath, - overrideProps: overrideProps, - overridePropsDeletePath: overridePropsDeletePath, - overridePropsRenamePath: overridePropsRenamePath, - setErrorHandler: setErrorHandler, - setSuspenseHandler: setSuspenseHandler, - scheduleUpdate: scheduleUpdate, - currentDispatcherRef: ReactSharedInternals, - findHostInstanceByFiber: findHostInstanceByFiber, - findFiberByHostInstance: - findFiberByHostInstance || emptyFindFiberByHostInstance, - // React Refresh - findHostInstancesForRefresh: findHostInstancesForRefresh, - scheduleRefresh: scheduleRefresh, - scheduleRoot: scheduleRoot, - setRefreshHandler: setRefreshHandler, - // Enables DevTools to append owner stacks to error messages in DEV mode. - getCurrentFiber: getCurrentFiberForDevTools, - // Enables DevTools to detect reconciler version rather than renderer version - // which may not match for third party renderers. - reconcilerVersion: ReactVersion - }); + scheduleUpdate = function (fiber) { + var root = enqueueConcurrentRenderForLane(fiber, SyncLane); + + if (root !== null) { + scheduleUpdateOnFiber(root, fiber, SyncLane); } + }; - function findHostInstance_DEPRECATED(componentOrHandle) { - { - var owner = ReactSharedInternals.owner; - - if (owner !== null && owner.stateNode !== null) { - if (!owner.stateNode._warnedAboutRefsInRender) { - error( - "%s is accessing findNodeHandle inside its render(). " + - "render() should be a pure function of props and state. It should " + - "never access something that requires stale data from the previous " + - "render, such as refs. Move this logic to componentDidMount and " + - "componentDidUpdate instead.", - getComponentNameFromType(owner.type) || "A component" - ); - } + setErrorHandler = function (newShouldErrorImpl) { + shouldErrorImpl = newShouldErrorImpl; + }; - owner.stateNode._warnedAboutRefsInRender = true; - } - } + setSuspenseHandler = function (newShouldSuspendImpl) { + shouldSuspendImpl = newShouldSuspendImpl; + }; +} - if (componentOrHandle == null) { - return null; - } // For compatibility with Fabric instances +function findHostInstanceByFiber(fiber) { + var hostFiber = findCurrentHostFiber(fiber); - if ( - componentOrHandle.canonical && - componentOrHandle.canonical.publicInstance - ) { - // $FlowExpectedError[incompatible-return] Can't refine componentOrHandle as a Fabric instance - return componentOrHandle.canonical.publicInstance; - } // For compatibility with legacy renderer instances + if (hostFiber === null) { + return null; + } - if (componentOrHandle._nativeTag) { - // $FlowFixMe[incompatible-exact] Necessary when running Flow on Fabric - // $FlowFixMe[incompatible-return] - return componentOrHandle; - } + return hostFiber.stateNode; +} - var hostInstance; +function emptyFindFiberByHostInstance(instance) { + return null; +} - { - hostInstance = findHostInstanceWithWarning( - componentOrHandle, - "findHostInstance_DEPRECATED" - ); - } // findHostInstance handles legacy vs. Fabric differences correctly - // $FlowFixMe[incompatible-exact] we need to fix the definition of `HostComponent` to use NativeMethods as an interface, not as a type. - // $FlowFixMe[incompatible-return] +function getCurrentFiberForDevTools() { + return current; +} - return hostInstance; - } - function findNodeHandle(componentOrHandle) { - { - var owner = ReactSharedInternals.owner; - - if (owner !== null && owner.stateNode !== null) { - if (!owner.stateNode._warnedAboutRefsInRender) { - error( - "%s is accessing findNodeHandle inside its render(). " + - "render() should be a pure function of props and state. It should " + - "never access something that requires stale data from the previous " + - "render, such as refs. Move this logic to componentDidMount and " + - "componentDidUpdate instead.", - getComponentNameFromType(owner.type) || "A component" - ); - } +function injectIntoDevTools(devToolsConfig) { + var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance; + return injectInternals({ + bundleType: devToolsConfig.bundleType, + version: devToolsConfig.version, + rendererPackageName: devToolsConfig.rendererPackageName, + rendererConfig: devToolsConfig.rendererConfig, + overrideHookState: overrideHookState, + overrideHookStateDeletePath: overrideHookStateDeletePath, + overrideHookStateRenamePath: overrideHookStateRenamePath, + overrideProps: overrideProps, + overridePropsDeletePath: overridePropsDeletePath, + overridePropsRenamePath: overridePropsRenamePath, + setErrorHandler: setErrorHandler, + setSuspenseHandler: setSuspenseHandler, + scheduleUpdate: scheduleUpdate, + currentDispatcherRef: ReactSharedInternals, + findHostInstanceByFiber: findHostInstanceByFiber, + findFiberByHostInstance: findFiberByHostInstance || emptyFindFiberByHostInstance, + // React Refresh + findHostInstancesForRefresh: findHostInstancesForRefresh , + scheduleRefresh: scheduleRefresh , + scheduleRoot: scheduleRoot , + setRefreshHandler: setRefreshHandler , + // Enables DevTools to append owner stacks to error messages in DEV mode. + getCurrentFiber: getCurrentFiberForDevTools , + // Enables DevTools to detect reconciler version rather than renderer version + // which may not match for third party renderers. + reconcilerVersion: ReactVersion + }); +} - owner.stateNode._warnedAboutRefsInRender = true; - } - } +function findHostInstance_DEPRECATED(componentOrHandle) { + { + var owner = ReactSharedInternals.owner; - if (componentOrHandle == null) { - return null; + if (owner !== null && owner.stateNode !== null) { + if (!owner.stateNode._warnedAboutRefsInRender) { + error('%s is accessing findNodeHandle inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentNameFromType(owner.type) || 'A component'); } - if (typeof componentOrHandle === "number") { - // Already a node handle - return componentOrHandle; - } // For compatibility with legacy renderer instances + owner.stateNode._warnedAboutRefsInRender = true; + } + } - if (componentOrHandle._nativeTag) { - return componentOrHandle._nativeTag; - } // For compatibility with Fabric instances + if (componentOrHandle == null) { + return null; + } // For compatibility with Fabric instances - if ( - componentOrHandle.canonical != null && - componentOrHandle.canonical.nativeTag != null - ) { - return componentOrHandle.canonical.nativeTag; - } // For compatibility with Fabric public instances - var nativeTag = - ReactNativePrivateInterface.getNativeTagFromPublicInstance( - componentOrHandle - ); + if (componentOrHandle.canonical && componentOrHandle.canonical.publicInstance) { + // $FlowExpectedError[incompatible-return] Can't refine componentOrHandle as a Fabric instance + return componentOrHandle.canonical.publicInstance; + } // For compatibility with legacy renderer instances - if (nativeTag) { - return nativeTag; - } - var hostInstance; + if (componentOrHandle._nativeTag) { + // $FlowFixMe[incompatible-exact] Necessary when running Flow on Fabric + // $FlowFixMe[incompatible-return] + return componentOrHandle; + } - { - hostInstance = findHostInstanceWithWarning( - componentOrHandle, - "findNodeHandle" - ); - } + var hostInstance; + + { + hostInstance = findHostInstanceWithWarning(componentOrHandle, 'findHostInstance_DEPRECATED'); + } // findHostInstance handles legacy vs. Fabric differences correctly + // $FlowFixMe[incompatible-exact] we need to fix the definition of `HostComponent` to use NativeMethods as an interface, not as a type. + // $FlowFixMe[incompatible-return] - if (hostInstance == null) { - // $FlowFixMe[incompatible-return] Flow limitation in refining an opaque type - return hostInstance; - } - if (hostInstance._nativeTag != null) { - // $FlowFixMe[incompatible-return] For compatibility with legacy renderer instances - return hostInstance._nativeTag; - } // $FlowFixMe[incompatible-call] Necessary when running Flow on the legacy renderer + return hostInstance; +} +function findNodeHandle(componentOrHandle) { + { + var owner = ReactSharedInternals.owner; + + if (owner !== null && owner.stateNode !== null) { + if (!owner.stateNode._warnedAboutRefsInRender) { + error('%s is accessing findNodeHandle inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentNameFromType(owner.type) || 'A component'); + } - return ReactNativePrivateInterface.getNativeTagFromPublicInstance( - hostInstance - ); + owner.stateNode._warnedAboutRefsInRender = true; } - function dispatchCommand(handle, command, args) { - var nativeTag = - handle._nativeTag != null - ? handle._nativeTag - : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); + } - if (nativeTag == null) { - { - error( - "dispatchCommand was called with a ref that isn't a " + - "native component. Use React.forwardRef to get access to the underlying native component" - ); - } + if (componentOrHandle == null) { + return null; + } - return; - } + if (typeof componentOrHandle === 'number') { + // Already a node handle + return componentOrHandle; + } // For compatibility with legacy renderer instances - var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); - if (node != null) { - nativeFabricUIManager.dispatchCommand(node, command, args); - } else { - ReactNativePrivateInterface.UIManager.dispatchViewManagerCommand( - nativeTag, - command, - args - ); - } - } - function sendAccessibilityEvent(handle, eventType) { - var nativeTag = - handle._nativeTag != null - ? handle._nativeTag - : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); + if (componentOrHandle._nativeTag) { + return componentOrHandle._nativeTag; + } // For compatibility with Fabric instances - if (nativeTag == null) { - { - error( - "sendAccessibilityEvent was called with a ref that isn't a " + - "native component. Use React.forwardRef to get access to the underlying native component" - ); - } - return; - } + if (componentOrHandle.canonical != null && componentOrHandle.canonical.nativeTag != null) { + return componentOrHandle.canonical.nativeTag; + } // For compatibility with Fabric public instances - var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); - if (node != null) { - nativeFabricUIManager.sendAccessibilityEvent(node, eventType); - } else { - ReactNativePrivateInterface.legacySendAccessibilityEvent( - nativeTag, - eventType - ); - } - } - function getNodeFromInternalInstanceHandle(internalInstanceHandle) { - return ( - // $FlowExpectedError[incompatible-return] internalInstanceHandle is opaque but we need to make an exception here. - internalInstanceHandle && // $FlowExpectedError[incompatible-return] - internalInstanceHandle.stateNode && // $FlowExpectedError[incompatible-use] - internalInstanceHandle.stateNode.node - ); - } // Should have been PublicInstance from ReactFiberConfigFabric - // Should have been PublicInstance from ReactFiberConfigNative - // Remove this once Paper is no longer supported and DOM Node API are enabled by default in RN. - - function isChildPublicInstance(parentInstance, childInstance) { - { - // Paper - if ( - // $FlowExpectedError[incompatible-type] - // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. - parentInstance._internalFiberInstanceHandleDEV && // $FlowExpectedError[incompatible-type] - // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. - childInstance._internalFiberInstanceHandleDEV - ) { - return doesFiberContain( - // $FlowExpectedError[incompatible-call] - parentInstance._internalFiberInstanceHandleDEV, // $FlowExpectedError[incompatible-call] - childInstance._internalFiberInstanceHandleDEV - ); - } - - var parentInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for parentInstance should have been PublicInstance from ReactFiberConfigFabric. - ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance( - parentInstance - ); - var childInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for childInstance should have been PublicInstance from ReactFiberConfigFabric. - ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance( - childInstance - ); // Fabric - - if ( - parentInternalInstanceHandle != null && - childInternalInstanceHandle != null - ) { - return doesFiberContain( - parentInternalInstanceHandle, - childInternalInstanceHandle - ); - } // Means that one instance is from Fabric and other is from Paper. + var nativeTag = ReactNativePrivateInterface.getNativeTagFromPublicInstance(componentOrHandle); - return false; - } - } + if (nativeTag) { + return nativeTag; + } - var emptyObject = {}; + var hostInstance; - { - Object.freeze(emptyObject); - } // $FlowFixMe[missing-local-annot] + { + hostInstance = findHostInstanceWithWarning(componentOrHandle, 'findNodeHandle'); + } - function createHierarchy(fiberHierarchy) { - return fiberHierarchy.map(function (fiber) { - return { - name: getComponentNameFromType(fiber.type), - getInspectorData: function (findNodeHandle) { - return { - props: getHostProps(fiber), - measure: function (callback) { - // If this is Fabric, we'll find a shadow node and use that to measure. - var hostFiber = findCurrentHostFiber(fiber); - var node = - hostFiber != null && - hostFiber.stateNode !== null && - hostFiber.stateNode.node; - - if (node) { - nativeFabricUIManager.measure(node, callback); - } else { - return ReactNativePrivateInterface.UIManager.measure( - getHostNode(fiber, findNodeHandle), - callback - ); - } - } - }; - } - }; - }); - } // $FlowFixMe[missing-local-annot] + if (hostInstance == null) { + // $FlowFixMe[incompatible-return] Flow limitation in refining an opaque type + return hostInstance; + } - function getHostNode(fiber, findNodeHandle) { - { - var hostNode; // look for children first for the hostNode - // as composite fibers do not have a hostNode + if (hostInstance._nativeTag != null) { + // $FlowFixMe[incompatible-return] For compatibility with legacy renderer instances + return hostInstance._nativeTag; + } // $FlowFixMe[incompatible-call] Necessary when running Flow on the legacy renderer - while (fiber) { - if (fiber.stateNode !== null && fiber.tag === HostComponent) { - hostNode = findNodeHandle(fiber.stateNode); - } - if (hostNode) { - return hostNode; - } + return ReactNativePrivateInterface.getNativeTagFromPublicInstance(hostInstance); +} +function dispatchCommand(handle, command, args) { + var nativeTag = handle._nativeTag != null ? handle._nativeTag : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); - fiber = fiber.child; - } + if (nativeTag == null) { + { + error("dispatchCommand was called with a ref that isn't a " + 'native component. Use React.forwardRef to get access to the underlying native component'); + } - return null; - } - } // $FlowFixMe[missing-local-annot] + return; + } - function getHostProps(fiber) { - var host = findCurrentHostFiber(fiber); + var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); - if (host) { - return host.memoizedProps || emptyObject; - } + if (node != null) { + nativeFabricUIManager.dispatchCommand(node, command, args); + } else { + ReactNativePrivateInterface.UIManager.dispatchViewManagerCommand(nativeTag, command, args); + } +} +function sendAccessibilityEvent(handle, eventType) { + var nativeTag = handle._nativeTag != null ? handle._nativeTag : ReactNativePrivateInterface.getNativeTagFromPublicInstance(handle); - return emptyObject; + if (nativeTag == null) { + { + error("sendAccessibilityEvent was called with a ref that isn't a " + 'native component. Use React.forwardRef to get access to the underlying native component'); } - function getInspectorDataForInstance(closestInstance) { - { - // Handle case where user clicks outside of ReactNative - if (!closestInstance) { - return { - hierarchy: [], - props: emptyObject, - selectedIndex: null, - componentStack: "" - }; - } + return; + } - var fiber = findCurrentFiberUsingSlowPath(closestInstance); + var node = ReactNativePrivateInterface.getNodeFromPublicInstance(handle); - if (fiber === null) { - // Might not be currently mounted. - return { - hierarchy: [], - props: emptyObject, - selectedIndex: null, - componentStack: "" - }; - } + if (node != null) { + nativeFabricUIManager.sendAccessibilityEvent(node, eventType); + } else { + ReactNativePrivateInterface.legacySendAccessibilityEvent(nativeTag, eventType); + } +} +function getNodeFromInternalInstanceHandle(internalInstanceHandle) { + return (// $FlowExpectedError[incompatible-return] internalInstanceHandle is opaque but we need to make an exception here. + internalInstanceHandle && // $FlowExpectedError[incompatible-return] + internalInstanceHandle.stateNode && // $FlowExpectedError[incompatible-use] + internalInstanceHandle.stateNode.node + ); +} // Should have been PublicInstance from ReactFiberConfigFabric +// Should have been PublicInstance from ReactFiberConfigNative +// Remove this once Paper is no longer supported and DOM Node API are enabled by default in RN. + +function isChildPublicInstance(parentInstance, childInstance) { + { + // Paper + if ( // $FlowExpectedError[incompatible-type] + // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. + parentInstance._internalFiberInstanceHandleDEV && // $FlowExpectedError[incompatible-type] + // $FlowExpectedError[prop-missing] Don't check via `instanceof ReactNativeFiberHostComponent`, so it won't be leaked to Fabric. + childInstance._internalFiberInstanceHandleDEV) { + return doesFiberContain( // $FlowExpectedError[incompatible-call] + parentInstance._internalFiberInstanceHandleDEV, // $FlowExpectedError[incompatible-call] + childInstance._internalFiberInstanceHandleDEV); + } + + var parentInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for parentInstance should have been PublicInstance from ReactFiberConfigFabric. + ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance(parentInstance); + var childInternalInstanceHandle = // $FlowExpectedError[incompatible-call] Type for childInstance should have been PublicInstance from ReactFiberConfigFabric. + ReactNativePrivateInterface.getInternalInstanceHandleFromPublicInstance(childInstance); // Fabric + + if (parentInternalInstanceHandle != null && childInternalInstanceHandle != null) { + return doesFiberContain(parentInternalInstanceHandle, childInternalInstanceHandle); + } // Means that one instance is from Fabric and other is from Paper. + + + return false; + } +} + +var emptyObject = {}; - var fiberHierarchy = getOwnerHierarchy(fiber); - var instance = lastNonHostInstance(fiberHierarchy); - var hierarchy = createHierarchy(fiberHierarchy); - var props = getHostProps(instance); - var selectedIndex = fiberHierarchy.indexOf(instance); - var componentStack = getStackByFiberInDevAndProd(fiber); +{ + Object.freeze(emptyObject); +} // $FlowFixMe[missing-local-annot] + + +function createHierarchy(fiberHierarchy) { + return fiberHierarchy.map(function (fiber) { + return { + name: getComponentNameFromType(fiber.type), + getInspectorData: function (findNodeHandle) { return { - closestInstance: instance, - hierarchy: hierarchy, - props: props, - selectedIndex: selectedIndex, - componentStack: componentStack + props: getHostProps(fiber), + measure: function (callback) { + // If this is Fabric, we'll find a shadow node and use that to measure. + var hostFiber = findCurrentHostFiber(fiber); + var node = hostFiber != null && hostFiber.stateNode !== null && hostFiber.stateNode.node; + + if (node) { + nativeFabricUIManager.measure(node, callback); + } else { + return ReactNativePrivateInterface.UIManager.measure(getHostNode(fiber, findNodeHandle), callback); + } + } }; } - } + }; + }); +} // $FlowFixMe[missing-local-annot] - function getOwnerHierarchy(instance) { - var hierarchy = []; - traverseOwnerTreeUp(hierarchy, instance); - return hierarchy; - } // $FlowFixMe[missing-local-annot] - function lastNonHostInstance(hierarchy) { - for (var i = hierarchy.length - 1; i > 1; i--) { - var instance = hierarchy[i]; +function getHostNode(fiber, findNodeHandle) { + { + var hostNode; // look for children first for the hostNode + // as composite fibers do not have a hostNode - if (instance.tag !== HostComponent) { - return instance; - } + while (fiber) { + if (fiber.stateNode !== null && fiber.tag === HostComponent) { + hostNode = findNodeHandle(fiber.stateNode); } - return hierarchy[0]; + if (hostNode) { + return hostNode; + } + + fiber = fiber.child; } - function traverseOwnerTreeUp(hierarchy, instance) { - { - hierarchy.unshift(instance); - var owner = instance._debugOwner; + return null; + } +} // $FlowFixMe[missing-local-annot] - if (owner != null && typeof owner.tag === "number") { - traverseOwnerTreeUp(hierarchy, owner); - } - } - } - function getInspectorDataForViewTag(viewTag) { - { - var closestInstance = getInstanceFromTag(viewTag); - return getInspectorDataForInstance(closestInstance); - } - } +function getHostProps(fiber) { + var host = findCurrentHostFiber(fiber); - function getInspectorDataForViewAtPoint( - findNodeHandle, - inspectedView, - locationX, - locationY, - callback - ) { - { - var closestInstance = null; - var fabricNode = - ReactNativePrivateInterface.getNodeFromPublicInstance(inspectedView); - - if (fabricNode) { - // For Fabric we can look up the instance handle directly and measure it. - nativeFabricUIManager.findNodeAtPoint( - fabricNode, - locationX, - locationY, - function (internalInstanceHandle) { - var node = - internalInstanceHandle != null - ? getNodeFromInternalInstanceHandle(internalInstanceHandle) - : null; - - if (internalInstanceHandle == null || node == null) { - callback( - assign( - { - pointerY: locationY, - frame: { - left: 0, - top: 0, - width: 0, - height: 0 - } - }, - getInspectorDataForInstance(closestInstance) - ) - ); - return; - } + if (host) { + return host.memoizedProps || emptyObject; + } - closestInstance = - internalInstanceHandle.stateNode.canonical - .internalInstanceHandle; // Note: this is deprecated and we want to remove it ASAP. Keeping it here for React DevTools compatibility for now. - - var nativeViewTag = - internalInstanceHandle.stateNode.canonical.nativeTag; - nativeFabricUIManager.measure( - node, - function (x, y, width, height, pageX, pageY) { - var inspectorData = - getInspectorDataForInstance(closestInstance); - callback( - assign({}, inspectorData, { - pointerY: locationY, - frame: { - left: pageX, - top: pageY, - width: width, - height: height - }, - touchedViewTag: nativeViewTag - }) - ); - } - ); - } - ); - } else if (inspectedView._internalFiberInstanceHandleDEV != null) { - // For Paper we fall back to the old strategy using the React tag. - ReactNativePrivateInterface.UIManager.findSubviewIn( - findNodeHandle(inspectedView), - [locationX, locationY], - function (nativeViewTag, left, top, width, height) { - var inspectorData = getInspectorDataForInstance( - getInstanceFromTag(nativeViewTag) - ); - callback( - assign({}, inspectorData, { - pointerY: locationY, - frame: { - left: left, - top: top, - width: width, - height: height - }, - touchedViewTag: nativeViewTag - }) - ); - } - ); - } else { - error( - "getInspectorDataForViewAtPoint expects to receive a host component" - ); + return emptyObject; +} - return; - } - } +function getInspectorDataForInstance(closestInstance) { + { + // Handle case where user clicks outside of ReactNative + if (!closestInstance) { + return { + hierarchy: [], + props: emptyObject, + selectedIndex: null, + componentStack: '' + }; } - if ( - typeof ReactNativePrivateInterface.ReactFiberErrorDialog - .showErrorDialog !== "function" - ) { - throw new Error( - "Expected ReactFiberErrorDialog.showErrorDialog to be a function." - ); - } + var fiber = findCurrentFiberUsingSlowPath(closestInstance); - function nativeOnUncaughtError(error, errorInfo) { - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var logError = - ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ - errorBoundary: null, - error: error, - componentStack: componentStack - }); // Allow injected showErrorDialog() to prevent default console.error logging. - // This enables renderers like ReactNative to better manage redbox behavior. + if (fiber === null) { + // Might not be currently mounted. + return { + hierarchy: [], + props: emptyObject, + selectedIndex: null, + componentStack: '' + }; + } - if (logError === false) { - return; - } + var fiberHierarchy = getOwnerHierarchy(fiber); + var instance = lastNonHostInstance(fiberHierarchy); + var hierarchy = createHierarchy(fiberHierarchy); + var props = getHostProps(instance); + var selectedIndex = fiberHierarchy.indexOf(instance); + var componentStack = getStackByFiberInDevAndProd(fiber); + return { + closestInstance: instance, + hierarchy: hierarchy, + props: props, + selectedIndex: selectedIndex, + componentStack: componentStack + }; + } +} - defaultOnUncaughtError(error, errorInfo); - } +function getOwnerHierarchy(instance) { + var hierarchy = []; + traverseOwnerTreeUp(hierarchy, instance); + return hierarchy; +} // $FlowFixMe[missing-local-annot] - function nativeOnCaughtError(error, errorInfo) { - var errorBoundary = errorInfo.errorBoundary; - var componentStack = - errorInfo.componentStack != null ? errorInfo.componentStack : ""; - var logError = - ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ - errorBoundary: errorBoundary, - error: error, - componentStack: componentStack - }); // Allow injected showErrorDialog() to prevent default console.error logging. - // This enables renderers like ReactNative to better manage redbox behavior. - if (logError === false) { - return; - } +function lastNonHostInstance(hierarchy) { + for (var i = hierarchy.length - 1; i > 1; i--) { + var instance = hierarchy[i]; - defaultOnCaughtError(error, errorInfo); + if (instance.tag !== HostComponent) { + return instance; } + } - function render(element, containerTag, callback, options) { - var root = roots.get(containerTag); + return hierarchy[0]; +} - if (!root) { - // TODO: these defaults are for backwards compatibility. - // Once RN implements these options internally, - // we can remove the defaults and ReactFiberErrorDialog. - var onUncaughtError = nativeOnUncaughtError; - var onCaughtError = nativeOnCaughtError; - var onRecoverableError = defaultOnRecoverableError; +function traverseOwnerTreeUp(hierarchy, instance) { + { + hierarchy.unshift(instance); + var owner = instance._debugOwner; - if (options && options.onUncaughtError !== undefined) { - onUncaughtError = options.onUncaughtError; - } + if (owner != null && typeof owner.tag === 'number') { + traverseOwnerTreeUp(hierarchy, owner); + } + } +} - if (options && options.onCaughtError !== undefined) { - onCaughtError = options.onCaughtError; +function getInspectorDataForViewTag(viewTag) { + { + var closestInstance = getInstanceFromTag(viewTag); + return getInspectorDataForInstance(closestInstance); + } +} + +function getInspectorDataForViewAtPoint(findNodeHandle, inspectedView, locationX, locationY, callback) { + { + var closestInstance = null; + var fabricNode = ReactNativePrivateInterface.getNodeFromPublicInstance(inspectedView); + + if (fabricNode) { + // For Fabric we can look up the instance handle directly and measure it. + nativeFabricUIManager.findNodeAtPoint(fabricNode, locationX, locationY, function (internalInstanceHandle) { + var node = internalInstanceHandle != null ? getNodeFromInternalInstanceHandle(internalInstanceHandle) : null; + + if (internalInstanceHandle == null || node == null) { + callback(assign({ + pointerY: locationY, + frame: { + left: 0, + top: 0, + width: 0, + height: 0 + } + }, getInspectorDataForInstance(closestInstance))); + return; } - if (options && options.onRecoverableError !== undefined) { - onRecoverableError = options.onRecoverableError; - } // TODO (bvaughn): If we decide to keep the wrapper component, - // We could create a wrapper for containerTag as well to reduce special casing. + closestInstance = internalInstanceHandle.stateNode.canonical.internalInstanceHandle; // Note: this is deprecated and we want to remove it ASAP. Keeping it here for React DevTools compatibility for now. - root = createContainer( - containerTag, - LegacyRoot, - null, - false, - null, - "", - onUncaughtError, - onCaughtError, - onRecoverableError, - null - ); - roots.set(containerTag, root); - } + var nativeViewTag = internalInstanceHandle.stateNode.canonical.nativeTag; + nativeFabricUIManager.measure(node, function (x, y, width, height, pageX, pageY) { + var inspectorData = getInspectorDataForInstance(closestInstance); + callback(assign({}, inspectorData, { + pointerY: locationY, + frame: { + left: pageX, + top: pageY, + width: width, + height: height + }, + touchedViewTag: nativeViewTag + })); + }); + }); + } else if (inspectedView._internalFiberInstanceHandleDEV != null) { + // For Paper we fall back to the old strategy using the React tag. + ReactNativePrivateInterface.UIManager.findSubviewIn(findNodeHandle(inspectedView), [locationX, locationY], function (nativeViewTag, left, top, width, height) { + var inspectorData = getInspectorDataForInstance(getInstanceFromTag(nativeViewTag)); + callback(assign({}, inspectorData, { + pointerY: locationY, + frame: { + left: left, + top: top, + width: width, + height: height + }, + touchedViewTag: nativeViewTag + })); + }); + } else { + error('getInspectorDataForViewAtPoint expects to receive a host component'); - updateContainer(element, root, null, callback); - return getPublicRootInstance(root); + return; } + } +} - function unmountComponentAtNode(containerTag) { - var root = roots.get(containerTag); +if (typeof ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog !== 'function') { + throw new Error('Expected ReactFiberErrorDialog.showErrorDialog to be a function.'); +} - if (root) { - // TODO: Is it safe to reset this now or should I wait since this unmount could be deferred? - updateContainer(null, root, null, function () { - roots.delete(containerTag); - }); - } - } +function nativeOnUncaughtError(error, errorInfo) { + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var logError = ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ + errorBoundary: null, + error: error, + componentStack: componentStack + }); // Allow injected showErrorDialog() to prevent default console.error logging. + // This enables renderers like ReactNative to better manage redbox behavior. + + if (logError === false) { + return; + } + + defaultOnUncaughtError(error, errorInfo); +} + +function nativeOnCaughtError(error, errorInfo) { + var errorBoundary = errorInfo.errorBoundary; + var componentStack = errorInfo.componentStack != null ? errorInfo.componentStack : ''; + var logError = ReactNativePrivateInterface.ReactFiberErrorDialog.showErrorDialog({ + errorBoundary: errorBoundary, + error: error, + componentStack: componentStack + }); // Allow injected showErrorDialog() to prevent default console.error logging. + // This enables renderers like ReactNative to better manage redbox behavior. + + if (logError === false) { + return; + } + + defaultOnCaughtError(error, errorInfo); +} + +function render(element, containerTag, callback, options) { - function unmountComponentAtNodeAndRemoveContainer(containerTag) { - unmountComponentAtNode(containerTag); // Call back into native to remove all of the subviews from this container + var root = roots.get(containerTag); - ReactNativePrivateInterface.UIManager.removeRootView(containerTag); + if (!root) { + // TODO: these defaults are for backwards compatibility. + // Once RN implements these options internally, + // we can remove the defaults and ReactFiberErrorDialog. + var onUncaughtError = nativeOnUncaughtError; + var onCaughtError = nativeOnCaughtError; + var onRecoverableError = defaultOnRecoverableError; + + if (options && options.onUncaughtError !== undefined) { + onUncaughtError = options.onUncaughtError; } - function createPortal(children, containerTag) { - var key = - arguments.length > 2 && arguments[2] !== undefined - ? arguments[2] - : null; - return createPortal$1(children, containerTag, null, key); + if (options && options.onCaughtError !== undefined) { + onCaughtError = options.onCaughtError; } - setBatchingImplementation(batchedUpdates); + if (options && options.onRecoverableError !== undefined) { + onRecoverableError = options.onRecoverableError; + } // TODO (bvaughn): If we decide to keep the wrapper component, + // We could create a wrapper for containerTag as well to reduce special casing. - function computeComponentStackForErrorReporting(reactTag) { - var fiber = getInstanceFromTag(reactTag); - if (!fiber) { - return ""; - } + root = createContainer(containerTag, LegacyRoot, null, false, null, '', onUncaughtError, onCaughtError, onRecoverableError, null); + roots.set(containerTag, root); + } - return getStackByFiberInDevAndProd(fiber); - } + updateContainer(element, root, null, callback); + return getPublicRootInstance(root); +} - var roots = new Map(); - var Internals = { - computeComponentStackForErrorReporting: - computeComponentStackForErrorReporting - }; - injectIntoDevTools({ - findFiberByHostInstance: getInstanceFromTag, - bundleType: 1, - version: ReactVersion, - rendererPackageName: "react-native-renderer", - rendererConfig: { - getInspectorDataForInstance: getInspectorDataForInstance, - getInspectorDataForViewTag: getInspectorDataForViewTag, - getInspectorDataForViewAtPoint: getInspectorDataForViewAtPoint.bind( - null, - findNodeHandle - ) - } +function unmountComponentAtNode(containerTag) { + var root = roots.get(containerTag); + + if (root) { + // TODO: Is it safe to reset this now or should I wait since this unmount could be deferred? + updateContainer(null, root, null, function () { + roots.delete(containerTag); }); + } +} - exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = Internals; - exports.createPortal = createPortal; - exports.dispatchCommand = dispatchCommand; - exports.findHostInstance_DEPRECATED = findHostInstance_DEPRECATED; - exports.findNodeHandle = findNodeHandle; - exports.getInspectorDataForInstance = getInspectorDataForInstance; - exports.isChildPublicInstance = isChildPublicInstance; - exports.render = render; - exports.sendAccessibilityEvent = sendAccessibilityEvent; - exports.unmountComponentAtNode = unmountComponentAtNode; - exports.unmountComponentAtNodeAndRemoveContainer = - unmountComponentAtNodeAndRemoveContainer; - exports.unstable_batchedUpdates = batchedUpdates$1; - /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ - if ( - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== "undefined" && - typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === - "function" - ) { - __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); - } +function unmountComponentAtNodeAndRemoveContainer(containerTag) { + unmountComponentAtNode(containerTag); // Call back into native to remove all of the subviews from this container + + ReactNativePrivateInterface.UIManager.removeRootView(containerTag); +} + +function createPortal(children, containerTag) { + var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null; + return createPortal$1(children, containerTag, null, key); +} + +setBatchingImplementation(batchedUpdates); + +function computeComponentStackForErrorReporting(reactTag) { + var fiber = getInstanceFromTag(reactTag); + + if (!fiber) { + return ''; + } + + return getStackByFiberInDevAndProd(fiber); +} + +var roots = new Map(); +var Internals = { + computeComponentStackForErrorReporting: computeComponentStackForErrorReporting +}; +injectIntoDevTools({ + findFiberByHostInstance: getInstanceFromTag, + bundleType: 1 , + version: ReactVersion, + rendererPackageName: 'react-native-renderer', + rendererConfig: { + getInspectorDataForInstance: getInspectorDataForInstance, + getInspectorDataForViewTag: getInspectorDataForViewTag, + getInspectorDataForViewAtPoint: getInspectorDataForViewAtPoint.bind(null, findNodeHandle) + } +}); + +exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = Internals; +exports.createPortal = createPortal; +exports.dispatchCommand = dispatchCommand; +exports.findHostInstance_DEPRECATED = findHostInstance_DEPRECATED; +exports.findNodeHandle = findNodeHandle; +exports.getInspectorDataForInstance = getInspectorDataForInstance; +exports.isChildPublicInstance = isChildPublicInstance; +exports.render = render; +exports.sendAccessibilityEvent = sendAccessibilityEvent; +exports.unmountComponentAtNode = unmountComponentAtNode; +exports.unmountComponentAtNodeAndRemoveContainer = unmountComponentAtNodeAndRemoveContainer; +exports.unstable_batchedUpdates = batchedUpdates$1; + /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ +if ( + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' && + typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop === + 'function' +) { + __REACT_DEVTOOLS_GLOBAL_HOOK__.registerInternalModuleStop(new Error()); +} + })(); }